CN2143678Y

CN2143678Y - Wortex flow liquid machinery with self-turning-proof mechanism

Info

Publication number: CN2143678Y
Application number: CN 92240484
Authority: CN
Inventors: 王迪生; 畅云峰; 巨小平; 王梅
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1992-12-19
Filing date: 1992-12-19
Publication date: 1993-10-13
Anticipated expiration: 2002-12-19

Abstract

The utility model relates to vortex type fluid machinery with a mechanism for preventing automatic rotation. The utility model comprises a moving vortex disk and two static vortex disks being meshed with the moving vortex disk, wherein, holes with the same radius are arranged on the corresponding positions of the moving vortex disk and the static vortex disks, and the coincident part of the holes of the moving vortex disk and the static vortex disks is provided with a cylindrical pin. The utility model performs the function of preventing the automatic rotation of the moving vortex disk. The utility model has the characteristics of simple processing, high precision and small frictional loss. The utility model adapts the requirements of the high precision of the vortex type fluid machinery.

Description

Wortex flow liquid machinery with self-turning-proof mechanism

The utility model relates to a kind of fluid machinery, particularly a kind of convolute-hydrodynamic mechanics that has anti-stop scroll free-wheeling system.

Convolute-hydrodynamic mechanics is meant a kind of moving scroll and fixed scroll of the scroll involute element that has end plate and stretch out vertically on end plate.When moving scroll and fixed scroll are in several angle when installing, this to vortex filament separately inside and outside side and two end plates towards the plane of vortex filament one side, form a series of Seal cages, under main shaft drives, moving scroll center line is made circular movement but himself non-rotary fluid machinery around the fixed scroll center line.In order to guarantee that moving scroll self does not rotate, and must have the mechanism of anti-stop scroll rotation.

The related convolute-hydrodynamic mechanics of the utility model is meant that moving scroll end plate two sides is processed with vortex filament, and like this, entire machine just has a moving scroll and two fixed scrolls.For anti-stop scroll rotation, existing structure is that one group of eccentric shaft is installed, and an end of eccentric shaft is installed on the fixed scroll, and the other end is installed on the moving scroll.The throw of eccentric of eccentric shaft is identical with the throw of eccentric that drives bent axle.When driving bent axle and drive moving scroll motion, eccentric shaft rotates in fixed scroll and moving scroll, makes scroll make circular movement but self can not rotate around the fixed scroll center line.Its shortcoming is: (1) eccentric shaft is stressed to be overhang, and force-bearing situation is not good.(2) eccentric shaft processed complex, precision are difficult for guaranteeing.

The purpose of this utility model is to propose a kind of convolute-hydrodynamic mechanics that has anti-rotation mechanism, makes that its processing is simple, precision is high, frictional loss is little, to adapt to the high requirement of convolute-hydrodynamic mechanics precision.

Fig. 1 is a schematic diagram of the present utility model.

Fig. 2 is an an embodiment's of the present utility model structure principle chart.

With reference to the accompanying drawings structural principle of the present utility model and operation principle are elaborated.

Feature of the present utility model is: on the correspondence position on two

fixed scroll

5A, 5B and the orbiter 4 identical hole 1A, 1B and 2 are arranged respectively, during installation, fixed

scroll

5A, 5B and orbiter 4 are at a distance of the radius of gyration R of bent axle 24, and hole 1A, the 1B on fixed scroll 5A, the 5B overlaps on axial view fully; Hole 2 on the orbiter 4 partially overlaps with 1A, 1B, and the center line of hole 2 and hole 1A, 1B is installed a straight pin 11 at a distance of R in intersection, and the two end portions of straight pin 11 contacts with hole 1A, 1B on two fixed scroll 5A, the 5B respectively; The mid portion of straight pin 11 contacts with hole 2 on the orbiter 4, shown in Fig. 1 e. If hole 1A, 1B, 2 aperture are D, the diameter of straight pin 11 is d, and then the radius of gyration R with bent axle must satisfy following relationship:

D＝R＋d

Move scroll 4 when the center line of

fixed scroll

5A, 5B is made circular movement when bent axle 24 drives, the intermediate portion of straight pin 11 rolls along the dabc direction of moving the hole 2 on the scroll 4; The bcda direction of hole 1A, the 1B of two end portions on fixed scroll 5A, the 5B is rolled, shown in Fig. 1 a, Fig. 1 b, Fig. 1 c, Fig. 1 d.Must have at least three same mechanism of evenly arranging could guarantee to move that scroll 4 is only made circular movement under the driving of bent axle 24 and self does not rotate on every machine.In order to strengthen wearability, in the hole 2 on moving scroll 4 and fixed scroll 5A, the 5B, 1A, the 1B cylindrical sleeve that abrasive-resistant material is made can be installed.

As seen, the spin moment of moving scroll 4 acts on the intermediate portion of straight pin 11 from Fig. 1 e, and the two end portions by straight pin 11 passes to fixed scroll 5A, 5B.Straight pin 11 is stressed reasonable.In the movement process, straight pin 11 along the hole 2,1A, 1B wall roll, and overcome eccentric shaft overhang force-bearing situation in the existing structure, and the manufacturing of straight pin 11 is simpler than eccentric shaft, precision also improves easily, makes convolute-hydrodynamic mechanics steadily reliable at the volley, and frictional loss is little.

Fig. 2 is an embodiment of the present utility model.Embodiment is an eddy type gas compressor, the two sides of its moving scroll 4 is processed with molded lines, on the peripheral corresponding position of the vortex filament of moving scroll 4 and

fixed scroll

5A, 5B, evenly arrange three identical holes, cylindrical sleeve 10A, 10B, 10C are installed in the hole, during installation, cylindrical sleeve 10B, 10C are corresponding fully.Because when moving scroll 4 was installed with

fixed scroll

5A, 5B, center line was at a distance of the turning radius R of bent axle 24, cylindrical sleeve 10A and 10B, 10C center line are also at a distance of R, and cylindrical sleeve 10A is corresponding with 10B, 10C part, and counterpart is equipped with straight pin 11.When the moving scroll 4 of bent axle 24 drives was made circular movement, the anti-stop scroll free-wheeling system that cylindrical sleeve 10A, 10B, 10C and straight pin 11 are formed had guaranteed self not rotating of moving scroll 4.Moving scroll 4 is formed a series of Seal cages with

fixed scroll

5A, 5B, is moved and dwindles gradually to core by the outer end portion of vortex filament, reaches hour to be discharged by relief opening 6.20,26 is rolling bearing, and in order to bear driving force and driving moment, 14A, 14B are one group of short cylindrical rolling bearing, and connecting moving scroll 4 and bent

axle

24,16 is balancing mass, in order to the inertial force of balance owing to moving scroll 4 generations; 19 is sealing mechanism, separating atmospheric environment and pressurized gas.

In addition, 21 is bearing cap, and 18,22 is key, and 23 is dust sealing, and 25 is pin, and 13,15 is the bearing positioning block, and intakeport is not expressed among the figure on

fixed scroll

5B, and 17 is bonnet, and 12 for adjusting circle, and 25 is positioning screwn.

Claims

1, the convolute-hydrodynamic mechanics that has anti-rotation mechanism, comprise a moving scroll 4 and the two fixed scroll 5A, the 5B that are meshed with it, the bent axle 24 of center configuration one transferring power of moving scroll 4, feature of the present utility model is, have radius identical hole 1A, 1B on two fixed scroll 5A, the corresponding position of 5B, have the identical hole of radius 2 with hole 1A, 1B on the moving scroll of turning radius R, the part that coincides in hole 1A, 1B and hole 2 is installed a straight pin 11.

2, fluid machinery according to claim 1 is characterized in that, the diameter d of said straight pin 11 satisfies following relationship:

D＝R＋d

Wherein: D is hole 1A, 1B, 2 aperture;

R is the turning radius of bent axle 24.

3, convolute-hydrodynamic mechanics according to claim 1 is characterized in that, disposes cylindrical sleeve in said hole 1A, the 1B, 2.