WO2000031440A1

WO2000031440A1 - A rotary and reciprocating piston mechanism

Info

Publication number: WO2000031440A1
Application number: PCT/CN1999/000198
Authority: WO
Inventors: Shouling Zhang
Original assignee: Shouling Zhang
Priority date: 1998-11-21
Filing date: 1999-11-19
Publication date: 2000-06-02

Abstract

The invention relates to a rotary and reciprocating piston mechanism, comprising an inner cylinder and an outer cylinder which are coaxial and contact with each other, curved grooves defined on the contacting surface of the cylinders, and rollers rolling or sliding in and along the said grooves. The two cylinders are connected by the rollers in a way that they can slide with respect to each other, and one of them is fixedly or movably connected to the (main) spindle. The invention can be widely used as a cylinder, a piston or a linkage in motors, compressors and pump.

Description

FIELD OF THE INVENTION

The present invention relates to a plunger type rotary reciprocating machine suitable for the fields of engines, compressors, pumps and the like ^ K Prior art description

At present, the reciprocating piston type (hereinafter referred to as a reciprocating machine) in this field is large in volume and complicated in structure. In contrast, the rotary piston type (hereinafter referred to as a rotary machine) is small in size and simple in structure. This situation makes people think that: Reciprocators have a tendency to be replaced by rotor machines. However, although some shortcomings of the reciprocating machine are obvious, to date, the rotor machine has not been able to replace the widely used position of the reciprocating machine.

From the structural point of view, the cylindrical cylinder body and piston of the reciprocating machine have a simple profile. In addition to convenient processing, this structure also has good sealing performance. These are the obvious advantages of the reciprocating machine. Compared with this, the rotor machine has a complicated crankshaft connecting rod mechanism and gas distribution mechanism. How to improve the complex structure of the rotor machine is the key to whether the rotor machine can be promoted and applied. Object of the invention

Therefore, an object of the present invention is to provide a mechanism plunger-type rotary reciprocating mechanism. The mechanism has a simple and reasonable structure and can solve the foregoing problems.

Brief description of the invention

A plunger-type rotary reciprocating mechanism according to the present invention includes an inner cylinder, an outer cylinder, a convex pin, and a curved groove. The inner and outer cylinders are connected by convex pins and curved grooves provided on each contact surface. Coaxial, surface contact, can slide with each other to form a plunger shape, the inner cylinder or the outer cylinder can be connected to the main shaft in a fixed or movable manner, respectively.

According to the present invention, a plunger-type rotary reciprocating mechanism is provided, wherein the curved groove is provided on the outer peripheral surface of the inner cylinder, the convex pin is provided on the inner peripheral surface of the outer cylinder, or the curved groove is provided on the inner peripheral surface of the outer cylinder. The convex pin is arranged on the outer peripheral surface of the inner cylinder, the convex pin is embedded in the curved groove, and the convex pin

Shoulder recognition The number of pins is equal to the number of wave-shaped groove wave groups.

According to the present invention, a plunger-type rotary reciprocating mechanism is provided, wherein the convex pins are evenly divided into one, two or more cylinders on the same circle 360 degrees or a roller with a roller.

According to the present invention, a plunger-type rotary reciprocating mechanism is provided, wherein the curved groove is a wave peak and a trough as a group of equivalent continuous groups, two groups or more on a 360-degree circumferential surface. The smooth wavy curve groove is closed and not staggered. The actual contour of the curve groove is the envelope of a circle with the radius of the convex cylinder as the radius.

According to the present invention, a plunger-type rotary reciprocating mechanism is provided, wherein the axis of the plunger-shaped inner and outer cylinders is coaxial with or coaxial with the main axis.

According to the present invention, a plunger-type rotary reciprocating mechanism is provided, wherein the mechanism is a mechanism for transmitting motion and force of an engine.

A plunger type rotary reciprocating mechanism is provided according to the present invention, wherein the mechanism is a mechanism for transmitting motion and force of a compressor.

A plunger type rotary reciprocating mechanism is provided according to the present invention, wherein the mechanism transmits motion and force by a pump. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a main structural diagram of the present invention;

2 is an exploded view of the contact circular surfaces of two cylinders inside and outside the plunger structure;

3-6 are schematic diagrams for explaining the principle and application form of the components of the present invention; FIG. 7 is a schematic diagram of a plunger type rotary reciprocating compressor to which the present invention is applied;

FIG. 8 is a schematic diagram of a plunger-type rotary reciprocating engine to which the present invention is applied. Description of the embodiments

FIG. 1 is a perspective structural view of the present invention. It can be seen from the figure that the present invention is composed of an inner cylinder 1, an outer cylinder 2, a convex pin 3, and a curved groove 4. The inner and outer cylinders are coaxial with each other and are in contact with each other in the shape of a plunger, which can slide with each other, and are coaxial or coaxial with the main shaft 5 of the transmission shaft (because the main shaft and the inner circle There are many cases for the connection of the column or the outer cylinder, so it is not drawn in the figure, it only shows the coaxial or coaxial). In order to enable the two cylinders to make relative and orderly movements, the present invention has a curved groove on the outer peripheral surface of the inner cylinder. A cylindrical convex pin (or convex pin plus a roller) is provided on the inner peripheral surface of the outer cylinder, and the convex pin is embedded in the groove. It can slide along the groove or roll in the groove as a roller. If the curved groove is opened on the inner peripheral surface of the outer cylinder, a convex pin is provided on the outer peripheral surface of the inner cylinder.

Fig. 2 is a developed view of the contact peripheral surfaces of the inner and outer cylinders of the plunger structure according to the present invention. The figure shows the shape of two equally distributed distribution pins 3 on the same circumference and the shape of two sets of continuous wave-shaped grooves 4 on the circumferential surface. As can be seen from the two sets of wavy curve grooves and the corresponding two pins shown in the figure, the purpose of setting the above two sets of components is to balance the forces on the components during the implementation of the structure. According to requirements, one or three sets of wavy curve grooves may be provided, correspondingly provided with one, three convex pins or more, and no matter how many, the wavy curve grooves are not staggered on the 360-degree peripheral surface, And it's closed. The actual contour line is a circle of a circle with the radius of the convex circle as the radius.

It can be seen from Figures 1 and 2 that the relative distance that the inner and outer cylinders can move is equal to the wave height, and the number of strokes for a 360-degree rotation is twice the number of sets of wave-shaped grooves.

Different from the cylindrical cam mechanism, in the structure of the present invention, the inner and outer cylinders can be mutually active, driven or either fixed, and formed into plungers each other, and are mainly used in the field of mechanism that changes volume stroke.

In order to better clarify the principle and application form of the component of the present invention, it is envisaged that the outer cylinder in Fig. 1 is extended and an end cap is added, which constitutes an inner cavity whose volume can be changed, that is, the outer cylinder becomes a cylinder. The inner cylinder becomes a piston (as shown in Fig. 3-6, the inner cylinder 1, the outer cylinder 2, the protruding pin 3, and the curved groove 4 constitute the mechanism of the present invention), so it can directly constitute a variable capacity machine. And it is stipulated here that the main shaft of the drive shaft only outputs or inputs rotation (natural engine output rotation and compressor, pump, etc. input rotation), but does not make reciprocating motion (reciprocating motion refers to reciprocating linear motion, the same applies hereinafter). The principle is described in detail below:

Figure 3:

A. The inner cylinder makes a reciprocating motion (active) and the outer cylinder makes a rotational motion (slave)-it can be used for engines. B. The outer cylinder makes a rotary motion (active), while the inner cylinder makes a reciprocating motion (slave)-compressors, pumps, etc. are available.

As can be seen from the figure, in order to achieve the two conditions of A and B, an axial guide 6 and a groove (not shown) can be provided in the inner cylinder 1, the guide rail is fixed on the frame, and the groove is opened in the inner cylinder. So that the inner cylinder can only slide back and forth on the guide rail without rotating. The main shaft 5 is integrated with the outer cylinder 2.

Figure 4:

C. The outer cylinder makes a reciprocating motion (active), and the inner cylinder makes a rotating motion (slave)-it can be used for the engine.

D. The inner cylinder makes a rotary motion (active), and the outer cylinder makes a reciprocating motion (; driven)-it can be used in a compressor.

As can be seen from the figure, in order to achieve the two conditions of C and D, a sleeve 6 can be added to the outer cylinder 2, the sleeve can be fixed, the guide groove 7 can be opened in the sleeve, and the convex pin 3 on the outer cylinder can be lengthened (or provided separately) Convex pins), which are respectively embedded in the guide groove and the curved groove 4, so that the outer cylinder can only slide back and forth without rotating. The main shaft 5 is integrated with the inner cylinder 1.

Figure 5:

E. If the outer cylinder is fixed, the inner cylinder can be used for reciprocating and rotating compound motions—for engines; it can also be used for rotary and reciprocating compound motions—for compressors and pumps.

It can be seen from the figure that to achieve the purpose of E, a shaft guide groove 6 can be opened in the inner cylinder. A shaft arm 7 is added to the main shaft 5 to be embedded in the guide groove, so that the inner cylinder and the main shaft can slide relative to each other. You cannot make relative rotation.

Figure 6:

F. If the inner cylinder is fixed, the outer cylinder can be used for reciprocating and rotating compound motions—for engines; it can also be used for rotary and reciprocating compound motions—for compressors and pumps.

It can be seen from the figure that in order to achieve the situation of F, the center of the outer cylindrical end cap can be opened. The shape of the opening is the same as the cross-sectional shape of the main shaft within the distance that the main shaft slides, and the non-circular anastomosis surface contacts ( The cross section of the inner end of the main shaft is circular). So that the outer cylinder and the main shaft can make relative reciprocating sliding surfaces and can't make relative rotation. From the above, it can be known that, because the motion mode of the present invention simultaneously rotates and reciprocates, and the component forms the form of a plunger, the present invention is named as a plunger-type rotary reciprocating mechanism. For the corresponding engine, the compressor is named as the plunger rotary reciprocating engine, the name of the plunger rotary reciprocating compressor, and so on.

It can also be known from the foregoing that the type of application of the present invention in the fields of engines, compressors, pumps and the like retains the simple round profile of the cylindrical cylinder and piston of the reciprocator; the complicated petite mechanism is eliminated, Only convex pins and corrugated curve grooves are used for replacement; and the coaxial plunger structure makes the gas distribution system have good conditions for simplification; and the traditional reciprocation completes two strokes every one revolution, and the invention can More. To sum up, the application type of the present invention in this field has the advantages of simple and compact structure, small size, good sealing performance, high efficiency, easy processing, etc. of the reciprocating machine and the rotor machine, so the invention will be widely used.

In order to better understand the advantages of the application of the present invention, two practical application examples of the present invention are described below.

Figure Ί is a diagram of a plunger-type rotary reciprocating compressor according to the present invention. The following is an axial cross-sectional view. Its structural composition and working principle are briefly described as follows:

In the figure: the inner cylinder 1, the outer cylinder 2, the convex pin 3, and the curved groove 4 constitute the mechanism of the present invention. The inner cylinder is fixed on the outer shell, the outer cylinder is added with the end cover 6, and the impeller 7 is integrated into the shape shown in the figure. The end cover can slide on the main shaft 5. When the main shaft rotates, the outer cylinder performs a reciprocating composite motion under the limitation of the convex pin and the curved groove. This situation is as described in F above, and the application form is similar to Figure 6.

It can be seen from FIG. Ί that the intake, exhaust, and shutdown processes of the compressor of the present invention include that two sides of the outer cylindrical partition plate 8 and the inner cylinder and the main shaft constitute two working chambers. The working chamber air ports 9 are opened on both sides of the partition plate, staggered by 90 degrees. Because the outer cylinder also rotates, it can be equipped with a gas distribution sleeve 10, which is fixed. The gas distribution sleeve is formed with two groups of gas inlet channels 1 and 12, and two groups of gas exhaust channels 12, and Home. The movement trajectory of the air port is the same as the shape of the curved groove. Because the air intake and exhaust channels are provided for the air inlet and exhaust, the opening is on the air trajectory. The shape and position of the opening are shown in the expanded view of the air distribution sleeve in the upper figure. . In addition, the casing 13 is provided with an air inlet 14 communicating with the air intake passage, and an exhaust port 15 communicating with the air exhaust passage (the exact inlet and outlet ports are not shown in the figure). The air intake and exhaust are completed through the air port and the air distribution exhaust channel. Intake and exhaust are closed at the crest of the movement trajectory of the port, Valley related location.

The lubrication method of the compressor of the present invention is a splash type. 16 in the figure indicates the location where the lubricating oil is stored, and the lubrication of the parts is completed by the impeller hitting the lubricating oil splashing. In addition, a small hole 17 is formed in the end cover 6 to lubricate the oil passage and lubricate the inner end of the main shaft.

FIG. 8 is a diagram of a plunger-type rotary reciprocating engine according to the present invention, and the following figure is an axial cross-sectional view. The structure composition and working principle are briefly described as follows:

In the figure: the inner cylinder 1, the outer cylinder 2, the convex pin 3, and the curved groove 4 constitute the mechanism of the present invention. The inner and outer cylinders serve as the casing, and the inner cylinder is provided with a piston seat 6 as a whole, and the piston seat is shown in the figure (the sectional view and the upper left side view). The engine of the present invention does not directly use the outer cylinder and the inner cylinder as cylinders and pistons because of lubrication considerations. A rectangular hole is opened in the piston seat, and can slide on the corresponding rectangular (section) section of the main shaft 5. This situation is as described in E above, and the application form is similar to that of FIG. 5.

The piston 7 is fixed on the piston seat, and the cylinder 8 and the end 9 are fixed on the outer cylinder (chassis). The end cap is provided with a gas chamber 10, which contains gas valves, spark plugs, cam disks, etc. (not shown in the figure), such as the configuration 11: two inlet and exhaust valves (four large circles) are opposite each other, and the spark plug (two small (Circle) are opposite to each other, and the cam disc (dashed circle) is fixed on the main shaft. The shape of the cam disk is shown in Figure 12. This cam disk is actually two disks: the convex sections are 90 degrees each, and the opposite sides are staggered into two working concentric circles, which simultaneously act or leave the two groups of intake and exhaust valves.

Due to the structural characteristics of the engine of the present invention, it has good lubrication and cooling conditions. The lubricating method of the engine of the present invention is a splash type, and the lubrication of the parts (including the lubrication of the air distribution chamber) is completed by the piston seat hitting the lubricating oil. The cooling of the iris body and the main shaft can be jacketed to form a cooling cavity for oil cooling or water cooling (not shown in the figure).

The working conditions of the engine are relatively harsh, and the requirements for the high temperature resistance and compressive strength of certain component materials are high. However, the contact area between the convex pin and the curved groove of the replacement link mechanism is small, and the convex pin generates a large force on some parts of the groove when the engine is operating, which increases the material quality requirements of the convex pin and the groove component. In order to disperse this concentrated force, the groove can be processed into a square cross-section. In addition to the embedded convex pin, the groove is filled with a ball with a diameter such as a square and a long side, so that the force can be properly concentrated. The problem. With the appearance and application of high-strength, high-temperature-resistant materials, this engine has shown its superior performance.

In summary, the present invention, whether it is a cylinder, piston, and connecting rod mechanism that directly acts as a reciprocator, It only replaces the link mechanism, and plays an important role in simplifying the structure, reducing the size, and improving the performance efficiency of the application type of the present invention. For example, after the link mechanism is replaced by a convex pin groove, the application type of the present invention has a simple and compact structure. For example, the above compressor can complete the intake and exhaust and the exhaust and exhaust closing through the air distribution sleeve, and the number of parts of the air distribution mechanism is reduced to a minimum. For example, although the above-mentioned engine does not consider the use of a valve sleeve and adopts the traditional valve valve type, the components are still greatly reduced. From this, it can be seen that the structural characteristics of the application type of the present invention can provide better conditions. Design considerations. For another example, a traditional reciprocating machine only completes two strokes every 360 degrees of rotation, while the compressor and the engine can complete four strokes. The compressor does two work per cylinder, and the engine has one work per cylinder. The efficiency will be high. of. As mentioned above, the application of the present invention allows the application type to have both the advantages of a reciprocating machine and a rotor machine, so the present invention can be widely applied.

Claims

Claim

1. A plunger-type rotary reciprocating mechanism comprising an inner cylinder, an outer cylinder, a convex pin and a curved groove, and the inner and outer cylinder are connected by a convex pin and a curved groove provided on each contact surface, characterized in that the inner and outer cylinders are the same The shaft center and the surface contact can slide with each other to form a plunger shape. The inner cylinder or the outer cylinder can be connected to the main shaft in a fixed or movable manner, respectively.

The plunger-type rotary reciprocating mechanism according to claim 1, wherein the curved groove is provided on the outer peripheral surface of the inner cylinder, the convex pin is provided on the inner peripheral surface of the outer cylinder, or the curved groove is provided on the outer cylinder. The convex pins are arranged on the inner peripheral surface of the inner cylinder, the convex pins are embedded in the curved grooves, and the number of convex pins is equal to the number of wave groups of the wave-shaped curved grooves.

The plunger-type rotary reciprocating mechanism according to claim 1, wherein the convex pins are divided into one, two or more cylinders on a 360-degree circumference of the same circle or are added Roller roller.

4. The plunger-type rotary reciprocating mechanism according to claim 1, wherein the curved groove is a group of two peaks and two groups of peaks and troughs on a 360-degree circumferential surface. Or more smooth wavy curve grooves, which are closed and not staggered. The actual round line of the curve groove is the envelope of a circle with the radius of the convex cylinder as the radius.

The plunger-type rotary reciprocating mechanism according to claim 1, wherein the axis of the plunger-shaped inner and outer cylinders is coaxial with or coaxial with the main axis.

The plunger-type rotary reciprocating mechanism according to claim 1, characterized in that it is a mechanism for transmitting motion and force of an engine.

The plunger-type rotary reciprocating mechanism according to claim 1, characterized in that it is a mechanism for transmitting motion and force of a compressor.

The plunger-type rotary reciprocating mechanism according to claim 1, characterized in that it is a mechanism for transmitting motion and force by a pump.