CN101769164A

CN101769164A - Rotary piston cylinder

Info

Publication number: CN101769164A
Application number: CN201010124691A
Authority: CN
Inventors: 周华
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-07
Filing date: 2010-02-07
Publication date: 2010-07-07

Abstract

The invention discloses a rotary piston cylinder, which is a mechanism capable of positively/reversely converting fluid pressure energy and mechanical energy in a one-way continuous circular motion mode. The rotary piston cylinder mainly comprises a cylinder body (1), a rotor (2), a clapboard (3), a working medium inlet (4), a working medium outlet (5), a rotary piston (6) and a crankshaft connecting rod mechanism (7). The working principle of the rotary piston cylinder is the same as that of a vane type oscillating cylinder. The rotary piston cylinder is characterized in that: the working rotary piston (6) displaces on a plane which is parallel to the axis under the action of the crankshaft connecting rod mechanism (7), and can cross the clapboard (3) to apply work circularly and realize the one-way continuous circular motion mode. The rotary piston cylinder has the characteristics of high energy conversion efficiency, high bearing capacity, widely permitted working media, continuous and stable output, cascade connection capacity, load-carrying self-start, stepless speed change, high-speed response, fast reversing, overload protection, excellent clutch brake performance, and the like.

Description

Rotary piston cylinder

One. technical field:

The present invention relates to piston cylinder, its motion mode is that contiguous circumferential rotatablely moves, be that a kind of just (contrary) is to the mechanism that transforms fluid pressure energy and mechanical energy, be a kind of novel fluid power and executive component, can be applicable to a plurality of fields such as pump, compressor, motor, clutch, brake, stepless speed variator, water turbine, gas-turbine, internal-combustion engine.

Two. background technique:

At present with the contiguous circumferential rotary movement just (contrary) mainly contain crankshaft-link rod piston mechanism, turbine mechanism and sliding-vane motor mechanism to the mechanism's comparative maturity that transforms fluid pressure energy and mechanical energy.

The crankshaft-link rod piston mechanism, its structural feature is a Conversion of energy with straight reciprocating motion and just (contrary) that rotatablely move to the realization that is converted, major defect have non-at the uniform velocity, moment of torsion such as non-, the output of discontinuous constant power, inertia impact, the dead point is arranged, cause correlation machine to need multistage misphase interlock, vibration is big, noise is big, efficient is low, the acting frequency is low, complex structure, difficulty of processing height.

Turbine mechanism, its characteristics are also will be through the conversion process of fluid dynamic energy in the middle of conversion process at just (contrary) of fluid pressure energy and mechanical energy, and loss is big, efficient is low, volume is big, material requirements is high, difficulty of processing is high, the life-span is low in order to transform for its major defect.

Sliding-vane motor mechanism, its characteristics are eccentric rotation, and major defect has non-constant speed, moment of torsion, the output of discontinuous constant power such as non-, and sealing difficulty is big, output power is little, efficient is low, noise is big, easily produce and vibrate.

In other non-mainstream rotational motion mechanism, all have the local defect in the said mechanism basically, more main is that energy conversion efficiency is low, discontinuous stable output.

Three. summary of the invention:

Goal of the invention: improve existing mechanism technological deficiency, a kind of high transformation efficiency is provided, at the uniform velocity, the Conversion of energy mechanism that rotatablely moves of continous-stable output.

Technological scheme: rotary piston cylinder of the present invention, its similar is in the blade type swing cylinder, mainly form by cylinder body (1), rotor (2), dividing plate (3), working medium inlet (4), sender property outlet (5), rotary-piston (6), difference has been many crankshaft ﹠ connecting (7) in the blade type swing cylinder, its effect is to make rotary-piston (6) in the work at the plane intrinsic displacement that is parallel to (or passing) axis, can cross dividing plate (3), circular work realizes unidirectional contiguous circumferential motion mode.

1. concrete working principle is described as follows:

Under the present invention is applied to situation that fluid pressure energy is converted into mechanical energy:

Shown in Figure 2 as Fig. 1, form the annular piston chamber by cylinder body (1) and rotor (2), cylinder body (1) is perpendicular to a sidewall of the end face looping chamber of axle, it is provided with working medium inlet (4) and sender property outlet (5) and communicates with annular cavity, the bent axle of dividing plate (3) and crankshaft ﹠ connecting (7) partly also is fixed thereon, working medium inlet (4), sender property outlet (5) branch occupy dividing plate (3) both sides, the bent axle of crankshaft ﹠ connecting (7) partly is arranged at the opposite side of dividing plate (3) with respect to the axle center, and its throw of eccentric is at least greater than highly half of dividing plate (3); Rotor (2) is made up of axle, disk and two annulus, and it is provided with guide groove, can make rotary-piston (6) radial expansion under the effect of crankshaft ﹠ connecting (7); In rotor (2) rotation process, submerge the fully angle of sector region of interior ring of rotor (2) of rotary-piston (6) is called and dodges angle (8), dividing plate (3) is contained in this angle, the angle that rotary-piston (6) enters the sector region of outer shroud partition annular cavity is called partition angle (9), and working medium inlet (4) and sender property outlet (5) are arranged at and cut off outside the angle (9).

In the time of in a rotary-piston (6) is in partition angle (9), together annular cavity is cut off into two parts with dividing plate (3), what communicate with working medium inlet (4) is called inlet (10), what communicate with sender property outlet (5) is called room of outlet (11), working medium inlet (4) connects pressure source, and sender property outlet (5) connects atmosphere, under the differential pressure action of two chambers, rotary-piston (6) is gone up and is produced moment of torsion drive rotor (2) rotation acting, the same vane-type pneumatic rotary actuator of above working principle.

In the time of outside rotary-piston (6) is cutting off angle (9), it loses the effect of packing chamber, for guaranteeing continuous work done, two rotary-pistons (6) is set at least, and evenly arranges in circumference, and the angle of adjacent two rotary-pistons (6) should be less than cutting off angle (9).When two rotary-pistons (6) are positioned at partition angle (9) simultaneously, as shown in Figure 3, inlet (10) is cut off into two partly, be cut off partly to be called and cut off chamber (12), isolate a part of pressure working medium in it, when one of them rotary-piston (6) moves out of partition angle (9), to cut off chamber (12) and merge with room of outlet (11), segregate pressure working medium is discharged from sender property outlet (5).

The present invention is applied under the situation that mechanical energy is converted into fluid pressure energy:

Rotor (2) is rotated counterclockwise under the situation of external power, inlet (10) is under the effect that is positioned at the rotary-piston (6) that cuts off angle (9), and volume enlarges and forms negative pressure, and low pressure working fluid is inhaled into this chamber, room of outlet (15) volume reduces gradually, and sender property outlet (5) power pressure raises; When two rotary-pistons (6) entered partition angle (9) simultaneously, sealing chamber (12) formed, in partly low pressure working fluid is closed in; Be rotated further, when a rotary-piston (6) went out to cut off angle (9), sealing chamber (12) and room of outlet (11) conducting because of differential pressure action, had moment working medium backflow, for reducing output fluctuation, can locate to be provided with one-way valve in sender property outlet (5); Be rotated further, the working medium that is cut off is forced out.

Beneficial effect:

The present invention is simple in structure, and is reliable, compares with the crankshaft-link rod piston mechanism, solved motion dead point and inertia impact problem; Compare with turbine mechanism, solved Conversion of energy by fluid dynamic energy transfer and the inefficient problem of energy utilized; Compare with sliding-vane motor mechanism and to have solved the astable output problem of eccentric stiffener, solved the leakage loss problem of blade wire sealing, solved the low problem of bearing capacity.Its annular cavity circulation piston structure is equivalent to the straight line single acting piston cylinder of indefinite length; therefore its energy conversion efficiency is with the straight line piston cylinder; can reach more than 80%, but and possess that the moment of torsion output area is wide, power range is wide, working medium kind allowable extensively, continous-stable output cascade, bringing onto load self-starting, stepless change, high-speed response, commutation fast, overload protection, good advantages such as clutch brake performance.Can be widely used in fields such as hydraulic fire generating, internal-combustion engine, fluid pump, compressor, fluid motor, stepless change, clutch brake manufacturing.

Four. description of drawings:

Fig. 1 is converted into the fluid pressure energy principle schematic for the present invention is applied to mechanical energy

Fig. 2 is the B-B rotation profile of Fig. 1 structure

Fig. 3 is that sealing chamber forms principle schematic in Fig. 1 movement process

Five. embodiment:

Embodiment 1:

Shown in Figure 2 as Fig. 1, because rotary-piston 6 is outside packing angle 9 time, the pressure that radially bears can produce reaction torque by crankshaft ﹠ connecting 7, output is caused fluctuation, increase rotary-piston 6 normal direction effective bearing areas and radially the ratio of ratio, increase length of connecting rod and the throw of eccentric of area will reduce the amplitude of this influence; The number that increases rotary-piston 6 can reduce throw of eccentric and cabinet size, but can increase amplitude and the difficulty of processing and the cost of fluctuation when surpassing 3, so the number of rotary-piston 6 is advisable with 3 or 4.

Rotation alive cold 6 is set to sheet, and radially reaction torque is little, and output is steady, and bearing capacity is big; But processing simplification and sealing and lubricity are poor slightly than column.

Dividing plate 3, working medium inlet 4, sender property outlet 5 are provided with on the sidewall of annular cavity, form three in addition of annular cavitys by rotor 2, this structure helps the guidance quality, bearing capacity, sealing of rotary-piston 6 and low-costly solves in the closed angle 9 with the interference problem of rotor 2 and do not form bump when isolated chamber.

Claims

1. rotary piston cylinder, mainly form by cylinder body (1), rotor (2), dividing plate (3), working medium inlet (4), sender property outlet (5), rotary-piston (6), has the annular working chamber, be similar to the blade type swing cylinder, it is characterized in that rotary-piston (6) can move back and forth in the plane of paralleling to the axis, under the effect of crankshaft ﹠ connecting (7), dodge dividing plate (3) circular work, realized unidirectional contiguous circumferential motion mode.

2. rotary piston cylinder according to claim 1, it is characterized in that having at least two rotary-pistons (6), each rotary-piston (6) evenly distributes on the annular cavity inner circumference, dividing plate (3) is positioned at dodges angle (8), packing angle (9) is greater than the angle between adjacent two rotary-pistons (6), working medium enters the mouth (4) and sender property outlet (5) is positioned at the both sides of dividing plate (3) and outside closed angle (9), the thickness of dividing plate (3) is greater than the thickness of rotary-piston (6).