CN1078313C

CN1078313C - Rotary-piston rotator compressor

Info

Publication number: CN1078313C
Application number: CN97117220A
Authority: CN
Inventors: 张呈林
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-19
Filing date: 1997-08-19
Publication date: 2002-01-23
Anticipated expiration: 2017-08-19
Also published as: CN1208820A

Abstract

The present invention relates to a rotary piston rotor compressor which is composed of a cylinder, a deformable and displaceable closed annular piston rotor having two top ends, a crank shaft and a cylinder cover, wherein an exhaust port of the cylinder cover is provided with a check valve, the deformable and displaceable closed annular piston rotor having two top ends is a hinged piston rotor or a flexible piston rotor, and the hinged piston rotor is composed of four piston plates, two large connecting rods and two small connecting rods. The flexible piston rotor is composed of a flexible piston body, two large connecting rods and two small connecting rods. The present invention has the advantages of large compression ratio, favorable sealing and lubricating performance, long service life, simple structure and easy preparing process.

Description

Rotary-piston rotator compressor

The present invention relates to a kind of rotary-piston rotator compressor, belong to mechanical positive displacement compressor.

U.S. Pat A-4118157 discloses a kind of " rotor compressor ", it is made up of cylinder barrel, two corner pistons rotor, bent axle, a cylinder cap that is made of the epitrochoid profile, cylinder barrel is roughly cylindrical shape, the right and left at cylinder barrel is respectively equipped with relief opening and intakeport, in exhaust ports check valve is housed.Its rotor is two dihedral pistons of epitrochoid profile cast in block, rotor in the running, it can only be the swing type line contact sealing that the sealing of rotor two tops and cylinder barrel wall curved surface friction is paid.Its structures shape its seal form, it is geneogenous to cause these types to exist, the shortcoming that is difficult to improve: short as sealing effect difference and life-span, compression ratio is little, and delivery pressure is little, the difficult processing of curved surface, cost is high.

The purpose of this invention is to provide a kind ofly have that compression ratio is big, sealing and greasy property is good, long service life, the rotary-piston rotator compressor of processing easily.

The object of the present invention is achieved like this:

It comprises hinged rotary-piston compressor and two kinds of technological schemes of flexible plunger rotor compressor.

The structure of hinged rotary-piston compressor is as follows:

A kind of rotary-piston rotator compressor, it is made up of closed hoop piston rotary, bent axle, the cylinder cap of cylinder barrel, the deformable with two tops and displacement, cylinder barrel is a cylindrical shape, is respectively equipped with relief opening and intakeport at the right and left of cylinder barrel, in exhaust ports check valve is housed.

Inner plane central authorities at two cylinder caps are provided with the boss of being with eccentric opening, are provided with the counterweight chamber in the outside of two cylinder caps, and bent axle is contained in the eccentric opening of cylinder cap boss, and counterweight is equipped with at the two ends of bent axle; Having the deformable on two tops and the closed hoop piston rotary of displacement is hinged rotary-piston, hinged rotary-piston is by four piston plates, two big connecting rods and two small rods are formed, the both sides, outer end that four piston plates are hinged on two big connecting rods by hinging shaft by hinging shaft after hinged in twos again form a closed hoop hinge rotor with the deformable and the displacement on two tops, the inner of two big connecting rods is enclosed within on the inner plane boss of cylinder cap, the inner of two small rods is enclosed within on the eccentric shaft of bent axle, being in the big connecting rod of bent axle the same side and the outer end of a small rod uses hinging shaft hinged, the outer end face of two big connecting rods is an arc surface, be provided with seal groove thereon, Stamping Steel Ribbon is housed in seal groove, on two side planes of piston plate, be provided with seal groove, Stamping Steel Ribbon is housed in seal groove, hinged place at piston plate, Stamping Steel Ribbon on two piston plates is with axle, arc form movingly is connected, and the Stamping Steel Ribbon on the Stamping Steel Ribbon on the outer end face of big connecting rod and the piston plate bi-side is connected piece by a Stamping Steel Ribbon that is positioned at the receptacle-shaped on the outer end side surface of big connecting rod and is connected.

The structure of flexible plunger rotor compressor is as follows:

A kind of rotary-piston rotator compressor, it is made up of closed annular piston rotary, bent axle, the cylinder cap of cylinder barrel, the deformable with two tops and displacement, cylinder barrel is a cylindrical shape, is respectively equipped with relief opening and intakeport at the right and left of cylinder barrel, in exhaust ports check valve is housed.

Inner plane central authorities at right cylinder cap are provided with the boss of being with eccentric opening, are provided with the counterweight chamber in the outside of left cylinder cap, and bent axle is contained in the eccentric opening of cylinder cap boss, and the left end of bent axle is equipped with counterweight; Having the deformable on two tops and the closed annular piston rotary of displacement is the flexible plunger rotor, the flexible plunger rotor is by the flexible plunger body, two big connecting rods, two small rods are formed, the flexible plunger body is the unitary closed annular, its two top is inboard to be connected for inlaying with the outer end of two big connecting rods, the inner of two big connecting rods is enclosed within on the inner plane boss of right cylinder cap, the inner of two small rods is enclosed within on the eccentric shaft of bent axle, the outer end that is in the big connecting rod of bent axle the same side and a small rod is hinged with hinging shaft, is provided with continuous resilient thread form sealing lip on two tops of flexible plunger body and two sides.

Working method of the present invention is as follows:

Rotary piston has been equivalent to contain the effect of reciprocating piston and connecting rod, under crank-driven, the rotary piston of deformable and displacement turns round in the cylinder barrel that forward and backward cylinder cap is sealing, and the arc surface of piston plate and cylinder barrel has constituted upper and lower two arc tabular active chambers in company with the piston rotation.Piston is out of shape in rotation and during displacement, makes one of them working chamber volume dwindle extrusion working medium, and the volume of another active chamber enlarges inspiration working medium.The radial displacement of piston is determining compression ratio, and radial displacement is formed by eccentric distance e.Have the parts of throw of eccentric to have two: bent axle (eccentric shaft) itself has eccentric distance e, spindle hole on the cylinder cap also has eccentric distance e, these two throw of eccentric equate, therefore when crankshaft rotating, the rotating locus of the central point of its eccentric shaft, the centre point of each circle by cylinder barrel once, each encloses left and right swing once to make two small rods overlapping on the eccentric shaft, thereby affect the displacement radially of piston do, cause the alternate of two working chamber volumes.The transmission of the active force between piston plate and the bent axle is reversible, uses so this machine both can be made compressor by crankshaft driving piston, also can remove to drive bent axle by piston and do fluid motor or pneumatic motor use.Hinged rotary-piston compressor of the present invention is applicable to large-scale air compression or feeding liquid under pressure (oil hydraulic pump), and the flexible plunger rotor compressor is applicable to small-sized air compression and as compressor for refrigeration.

Below in conjunction with drawings and Examples the present invention is further described:

Fig. 1 (1), Fig. 1 (3) are the structural representation of embodiments of the invention 1 (hinged rotary-piston compressor).

Fig. 1 (2) is the E-E sectional view of Fig. 1 (1).

Fig. 1 (4) is the C-C sectional view of Fig. 1 (3).

Fig. 2 (1)-Fig. 2 (8) is the fundamental diagram of embodiments of the invention 1.

Fig. 3 (1), Fig. 3 (3) are the structural representation of embodiments of the invention 2 (flexible plunger rotor compressor).

Fig. 3 (2) is the F-F sectional view of Fig. 3 (1).

Fig. 3 (4) is the D-D sectional view of Fig. 3 (3).

Fig. 4 is the structural representation of check valve (cylindrical leaf valve).

Fig. 5 (1) is the structural representation of flexible plunger side thread form sealing lip.

Fig. 5 (2) is the structural representation of flexible plunger end face thread form sealing lip

Fig. 5 (3) is the schematic representation of flexible plunger end face and bi-side thread form sealing lip continuous structure.

Fig. 6 (1)-Fig. 6 (8) is embodiment 2 a fundamental diagram.

By the embodiment 1 (hinged rotary-piston compressor) shown in Fig. 1 (1)-Fig. 1 (4) as can be known, it is made up of closed annular piston rotary, bent axle (5), the cylinder cap (13) of cylinder barrel (2), the deformable with two tops and displacement, cylinder barrel (2) is a cylindrical shape, the right and left at cylinder barrel (2) is respectively equipped with relief opening (1) and intakeport (12), locates to be equipped with check valve at relief opening (1).

Inner plane central authorities at two cylinder caps (13) are provided with the boss (16) of being with eccentric opening, are provided with counterweight chamber (14) in the outside of two cylinder caps, and bent axle (5) is contained in the eccentric opening of cylinder cap boss, and counterweight (15) is equipped with at the two ends of bent axle (5); Having the deformable on two tops and the closed annular piston rotary of displacement is hinged rotary-piston, hinged rotary-piston is by four piston plates (3), two big connecting rods (7) and two small rods (6) are formed, the both sides, outer end that four piston plates (3) are hinged on two big connecting rods (7) by hinging shaft by hinging shaft (4) after hinged in twos again form a closed annular hinge rotor with the deformable and the displacement on two tops, the inner of two big connecting rods (7) is enclosed within on the inner plane boss of cylinder cap, the inner of two small rods (6) is enclosed within on the eccentric shaft of bent axle (5), being in the big connecting rod (7) of bent axle (5) the same side and the outer end of a small rod (6) uses hinging shaft (8) hinged, the outer end face of two big connecting rods (7) is an arc surface, be provided with seal groove thereon, Stamping Steel Ribbon (10) is housed in seal groove, on two side planes of piston plate, be provided with seal groove, Stamping Steel Ribbon (11) is housed in seal groove, hinged place at piston plate, Stamping Steel Ribbon (11) on two piston plates is with axle, arc form movingly is connected, and the Stamping Steel Ribbon (10) on the outer end face of big connecting rod (7) is connected piece (9) linking with Stamping Steel Ribbon (11) on the piston plate bi-side by a Stamping Steel Ribbon that is positioned at the receptacle-shaped on the outer end side surface of big connecting rod (7).

The check valve that is installed on the cylinder barrel that relief opening (1) locates is ball check valve (18), and ball check valve (18) is formed by being positioned at valve base on the cylinder barrel (2) and spring and steel ball.

The Stamping Steel Ribbon (10) that is positioned on the outer end face of two big connecting rods (7) is 2-4, and the cross section of Stamping Steel Ribbon (10) is trapezoidal, and the outer nose circle of Stamping Steel Ribbon (10) is arc surface, is provided with the waved spring sheet in the residing seal groove of Stamping Steel Ribbon (10).

The Stamping Steel Ribbon (11) that is positioned on piston plate (3) bi-side is the circular arc bar shaped, and its cross section is " recessed " font, is provided with spring in the residing seal groove of Stamping Steel Ribbon (11).

On the cylindrical of cylinder barrel (2), be provided with radiating fin (17).

By the embodiment 2 (flexible plunger rotor compressor) of Fig. 3-shown in Figure 5 as can be known, it is made up of closed hoop piston rotary, bent axle (5), the cylinder cap (13) of cylinder barrel (2), the deformable with two tops and displacement, cylinder barrel (2) is a cylindrical shape, the right and left at cylinder barrel (2) is respectively equipped with relief opening (1) and intakeport (12), locates to be equipped with check valve at relief opening (1).

Inner plane central authorities at right cylinder cap (23) are provided with the boss (16) of being with eccentric opening, are provided with counterweight chamber (14) in the outside of left cylinder cap (13), and bent axle (5) is contained in the eccentric opening of cylinder cap boss, and the left end of bent axle (5) is equipped with counterweight (15); Having the deformable on two tops and the closed hoop piston rotary of displacement is the flexible plunger rotor, the flexible plunger rotor is by flexible plunger body (21), two big connecting rods (7), two small rods (6) are formed, flexible plunger body (21) is the unitary closed ring-type, its two top is inboard to be connected for inlaying with the outer end of two big connecting rods (7), the inner of two big connecting rods (7) is enclosed within on the inner plane boss of right cylinder cap (23), the inner of two small rods (6) is enclosed within on the eccentric shaft of bent axle (5), the outer end that is in the big connecting rod (7) of bent axle (5) the same side and a small rod (6) is hinged with hinging shaft (8), is provided with continuous resilient thread form sealing lip (22) on two tops of flexible plunger body (21) and two sides.

The material of flexible plunger body (21) is a heat-resistant engineering plastic, is provided with the steel wire ring in the middle level of the annulus of flexible plunger body (21).

The check valve that is installed on the cylinder barrel that relief opening (1) locates is cylindrical leaf valve (20), and it is made up of the tubular valve pocket and the reed spool that are positioned on the cylinder barrel (2), and the cylndrical surface reed of reed spool and holddown spring are an overall structure.

In Fig. 1 (1) and Fig. 3 (1), (19) are fixed base, and in Fig. 2 and Fig. 6, S is a top dead center.

Lubricating system of the present invention is as follows:

Adopt oil pump force feed machine oil to arrive the lubricant housings by the road, be coated with by the epitrochanterian little oilhole that is close on the casing wall again.The working connection of the oil circulation of Hinged piston formula compressor is: oil pump → enter to oilhole → big connecting rod inner duct → big connecting rod top (horizontal and vertical coating oilhole is arranged) in oilhole in the pillow block → this side big connecting rod axle sleeve → to opposite side big connecting rod top → opposite side big connecting rod inner duct → opposite side big connecting rod axle sleeve → opposite side cylinder cap pillow block here to oil outlet → get back to oil sump from a side cylinder cap.Another branch road of telling from the pillow block oilhole in order to lubricated bent axle footpath and on axle sleeve: promptly from oilhole in cylinder cap pillow block oilhole → bent axle → bent axle footpath oilhole (oilhole that oriented here axle sleeve is coated with) → bent axle the other end oilhole → opposite side cylinder cap pillow block oilhole → get back to oil sump to oil outlet.

The working connection of the oil circulation of flexible plunger formula compressor is: the top of oil pump → right side cylinder cap big connecting rod axle sleeve → two big connecting rod inner duct → two big connecting rod of oilhole → this side to the pillow block (have here horizontal oilhole to the coating of both sides cylinder cover wall and the oilhole that leads to flexible plunger body top longitudinally to the coating of cylinder barrel wall) → rod hinge connection place oilhole → two small rod inner duct → eccentric diameter of axle and inner duct → this side bent axle thereof are to oil outlet → oil sump.

For the oil, the gas that leak at the annular piston inner chamber, can when the cylinder working chamber suction stroke, be inhaled into active chamber, its approach is: the Hinged piston formula reclaims by the Non-return air valve that is located at the big connecting rod top, the flexible plunger formula then via thread form sealing lip lip that can only one-way sealing along reclaiming residual air.

Working principle of the present invention is as follows: the working principle of hinged rotary-piston compressor sees that shown in Fig. 2 (1)-2 (8), the working principle of flexible plunger rotor compressor is seen shown in Fig. 6 (1)-6 (8).Though the structure of both annular pistons is different, their working principle is the same.

Rotor compressor is passive machinery, need motivational drive, when external motivational drive crankshaft operation, the revolution of the eccentric diameter of axle of bent axle is affecting cover two small rods (6) thereon, and two small rods (6) are affecting two big connecting rods (7) respectively, and two big connecting rods then affect the piston (hinged or flexible) of shape such as ring-type to rotatablely move as circumference and displacement movement radially.Thereby suck or extrude the work of working medium.The piston rotary revolution is crossed half-turn, and the volume of two active chambers changes once separately: a working chamber volume enlarges (finishing suction stroke), and another working chamber volume dwindles (finish compression and discharge stroke).When piston rotary turned over a whole circle, two active chambers were finished air-breathing and two strokes of compression separately, promptly finish a work cycle separately.

The active chamber that cylinder barrel and piston constitute, the ratio of its maximum volume (shape such as arc chamber) and minimum volume (shape such as arc linear cavity) is its compression ratio, and compression ratio is decided by the selection of eccentric distance e, and the greatly then compression ratio of eccentric distance e choosing is big, otherwise then little.The maximum volume of active chamber and the difference of minimum volume are the work discharge capacity, and the total displacement of a cylinder barrel is the discharge capacity sum of two active chambers.

On fundamental diagram (hinged rotary-piston compressor see Fig. 2 (1)-2 (8), flexible plunger rotor compressor see Fig. 6 (1)-6 (8)), indicate working medium (gas or liquid) with small circle, shown the work cycle (sucking and extruding two strokes is a work cycle) of an active chamber.With the A chamber is example, and piston rotary turns over first half-turn, from Fig. 2 (1)-2 (5) or 6 (1)-6 (5), is A chamber air-breathing (B chamber compression, delivery valve leaves).Turning over second half-turn, from Fig. 2 (5)-2 (8)-2 (1) or Fig. 6 (5)-6 (8)-6 (1), is the compression of A chamber, and delivery valve leaves (the B chamber is air-breathing).So far, piston turns over a whole circle, and A has finished in the chamber work cycle (work cycle that extrudes and suck has also been finished in the B chamber) that sucks and extrude.Then, from Fig. 2 (1)-2 (8) or second circle of Fig. 6 (1)-6 (8) repeat the work cycle of first lap again, carry out so repeatedly.

The present invention is to finish and next compression stroke when beginning the gas backstreaming that pressure reduction caused of gas in a last compression stroke in order to prevent at the check valve of its relief opening setting.Check valve can be used steel ball valve (1 8), also can be with cylindrical leaf valve (see figure 4), the sealing surface of its reed is cylndrical surface (through grinding), matches with the inner cylindrical surface of valve opening and seals, its holddown spring and reed are overall structures, the characteristic that has the oneself to compress.The characteristics of this valve are simple and compact for structure, and volume is little and need not adjust easy arrangement on body, processing easily, installation easily.This check valve is by the gas pressure automatic on-off, and need not to lubricate.

Advantage of the present invention is the advantage that has reciprocating type and rotary two kinds of compressors concurrently, and namely compression ratio is big, defeated Go out that pressure height, sealing and greasy property are good, long service life, good dynamic balance, rotating speed height, efficient height, defeated The pulsation of large-minded, distribution pressure is little, be easy to processing.

Claims

1, a kind of rotary-piston rotator compressor, it is by cylinder barrel (2), closed hoop piston rotary with the deformable and the displacement on two tops, bent axle (5), cylinder cap is formed, cylinder barrel (2) is a cylindrical shape, the right and left at cylinder barrel (2) is respectively equipped with relief opening (1) and intakeport (12), locate to be equipped with check valve at relief opening (1), it is characterized in that being provided with the boss (16) of band eccentric opening in the inner plane central authorities of two cylinder caps (13), be provided with counterweight chamber (14) in the outside of two cylinder caps, bent axle (5) is contained in the eccentric opening of cylinder cap boss, and counterweight (15) is equipped with at the two ends of bent axle (5); Having the deformable on two tops and the closed hoop piston rotary of displacement is hinged rotary-piston, hinged rotary-piston is by four piston plates (3), two big connecting rods (7) and two small rods (6) are formed, the both sides, outer end that four piston plates (3) are hinged on two big connecting rods (7) by hinging shaft by hinging shaft (4) after hinged in twos again form a closed hoop hinge rotor with the deformable and the displacement on two tops, the inner of two big connecting rods (7) is enclosed within on the inner plane boss of cylinder cap, the inner of two small rods (6) is enclosed within on the eccentric shaft of bent axle (5), being in the big connecting rod (7) of bent axle (5) the same side and the outer end of a small rod (6) uses hinging shaft (8) hinged, the outer end face of two big connecting rods (7) is an arc surface, be provided with seal groove thereon, Stamping Steel Ribbon (11) is housed in seal groove, on two side planes of piston plate, be provided with seal groove, Stamping Steel Ribbon (10) is housed in seal groove, hinged place at piston plate, Stamping Steel Ribbon (11) on two piston plates is with axle, arc form movingly is connected, and the Stamping Steel Ribbon (10) on the outer end face of big connecting rod (7) is connected piece (9) linking with Stamping Steel Ribbon (11) on the piston plate bi-side by a Stamping Steel Ribbon that is positioned at the receptacle-shaped on the outer end side surface of big connecting rod (7).

2, compressor according to claim 1, the check valve that it is characterized in that being installed on the cylinder barrel that relief opening (1) locates is ball check valve (18), ball check valve (18) is formed by being positioned at valve base on the cylinder barrel (2) and spring and steel ball.

3, compressor according to claim 2, the Stamping Steel Ribbon (10) that it is characterized in that being positioned on the outer end face of two big connecting rods (7) is 2-4, the cross section of Stamping Steel Ribbon (10) is trapezoidal, the outer nose circle of Stamping Steel Ribbon (10) is arc surface, is provided with the waved spring sheet in the residing seal groove of Stamping Steel Ribbon (10).

4, compressor according to claim 3, the Stamping Steel Ribbon (11) that it is characterized in that being positioned on piston plate (3) bi-side is the circular arc bar shaped, its cross section is " recessed " font, is provided with spring in the residing seal groove of Stamping Steel Ribbon (11).

5, compressor according to claim 4 is characterized in that being provided with radiating fin (17) on the cylindrical of cylinder barrel (2).

6, a kind of rotary-piston rotator compressor, it is by cylinder barrel (2), closed hoop piston rotary with the deformable and the displacement on two tops, bent axle (5), cylinder cap is formed, cylinder barrel (2) is a cylindrical shape, the right and left at cylinder barrel (2) is respectively equipped with relief opening (1) and intakeport (12), locate to be equipped with check valve at relief opening (1), it is characterized in that being provided with the boss (16) of band eccentric opening in the inner plane central authorities of right cylinder cap (23), be provided with counterweight chamber (14) in the outside of left cylinder cap (13), bent axle (5) is contained in the eccentric opening of cylinder cap boss, and the left end of bent axle (5) is equipped with counterweight (15); Having the deformable on two tops and the closed hoop piston rotary of displacement is the flexible plunger rotor, the flexible plunger rotor is by flexible plunger body (21), two big connecting rods (7), two small rods (6) are formed, flexible plunger body (21) is the unitary closed ring-type, its two top is inboard to be connected for inlaying with the outer end of two big connecting rods (7), the inner of two big connecting rods (7) is enclosed within on the inner plane boss of right cylinder cap (23), the inner of two small rods (6) is enclosed within on the eccentric shaft of bent axle (5), the outer end that is in the big connecting rod (7) of bent axle (5) the same side and a small rod (6) is hinged with hinging shaft (8), is provided with continuous resilient thread form sealing lip (22) on two tops of flexible plunger body (21) and two sides.

7, compressor according to claim 6, the material that it is characterized in that flexible plunger body (21) is a heat-resistant engineering plastic, is provided with the steel wire ring in the middle level of the annulus of flexible plunger body (21).

8, compressor according to claim 7, the check valve that it is characterized in that being installed on the cylinder barrel that relief opening (1) locates is cylindrical leaf valve (20), it is made up of the tubular valve pocket and the reed spool that are positioned on the cylinder barrel (2), and the cylndrical surface reed of reed spool and holddown spring are an overall structure.