KR0177369B1 - Scroll pump - Google Patents

Abstract

The present invention relates to a scroll pump including a fixed scroll coupled to a front casing provided with an inlet and an outlet, an orbiting scroll which is eccentrically rotated by being opposed to the fixed scroll, and a rotating shaft of a motor for applying a driving force to the orbiting scroll A driving rotor coupled to the rotary shaft by a coupling means to generate a rotary magnetic force in accordance with a driving force of the motor, an intermediate casing sequentially coupled to a lower surface of the front casing, and a plurality of bearings And a driven rotor that receives eccentric rotation of the orbiting scroll and eccentrically rotates the orbiting scroll by receiving a rotating magnetic force of the driving rotor, And the rear casing So that electric leakage of the fluid due to leakage of fluid and component failure can be prevented and the power of the motor can be transmitted to the orbiting scroll by the rotating magnetic force of the driving rotor and the driven rotor So that there is a useful effect that the component can be minimized.

Description

Scroll pump

The present invention relates to a scroll pump. More particularly, the present invention relates to a scroll pump that combines a drive rotor that generates a rotating magnetic force on a rotating shaft of a motor so as to prevent leakage and component failure due to leakage of water when the fluid is pumped, To a scroll pump provided between an intermediate casing and a rear casing sequentially coupled to a lower surface of a front casing, the driven rotor being indirectly rotated by a rotating magnetic force of a driving rotor.

Generally, the scroll pump performs a function of feeding external fluid to a desired place by a suction force by rotation of a scroll pump, which is subjected to eccentric rotation by being in line contact with a fixed scroll by receiving power of a motor.

A conventional scroll pump for performing the above function will be described with reference to FIGS. 1 and 2.

FIG. 1 is a cross-sectional view of a main portion showing a conventional scroll pump.

1, the scroll pump according to the related art includes a front casing 10 provided with a suction port 11 and a discharge port 12, and a front casing 10 coupled to the front casing 10 by a screw 1 An orbiting scroll (30) eccentrically rotated by an eccentric shaft (91) provided at one end of a rotating shaft (90) of the motor supported by the fixed scroll (20) And a rear casing (5) having a mechanical seal (3) mounted on the outer periphery thereof to prevent leakage of fluid and coupled to the front casing (10) by screwing.

A bearing 4 is mounted on the outer surface of the eccentric shaft 91 so as to prevent friction with the orbiting scroll 30. On the rear casing 5 opposed to one surface of the orbiting scroll 30, (2) for preventing rotation of the orbiting scroll (30).

The operation of the scroll pump according to the related art constructed as above will be described with reference to FIG.

FIG. 2 is a bottom plan view showing a state where the front casing is opened to explain a scroll pump according to the related art.

The scroll pump of the related art is rotated by the eccentric shaft 91 of the rotary shaft 90 when the power is applied by the rotation shaft 90 of the motor as shown in FIG. So that the rotary scroll 20 is eccentrically rotated in line contact with the opposite fixed scroll 20, thereby performing idle motion.

Here, the revolving scroll (30) can be revolved only by revolving movement by the revolving restraint (5) mounted on the rear casing (5).

At this time, since the linear contact position between the orbiting scroll (30) and the fixed scroll (20) which are brought into contact with each other by the orbital motion is equally moved in the revolving motion direction, a suction force is generated, And is pumped to the discharge port 12.

That is, when the fluid introduced through the inlet 11 is sucked into the orbiting scroll 30 and the fixed scroll 20, the orbiting scroll 30 revolves by the eccentric shaft 91 of the rotary shaft 90 The line contact position with the fixed scroll 20 is naturally moved outward. At this time, the fluid introduced through the suction port 11 is pushed into the space between the orbiting scroll 30 and the fixed scroll 20, and then the fluid flows through the suction hole 11 to the fixed scroll 20 by the rotation of the orbiting scroll 30. [ And is transported outwardly via the discharge port 12 by being pushed outwardly together with the movement of the line contact position to the outside.

However, in the conventional scroll pump constructed as described above, the fluid introduced through the suction port of the front casing is mostly fed out through the discharge port due to the linear contact of the fixed scroll and the orbiting scroll. However, And flows down into the clearance between the orbiting scrolls and rides on the rotating shaft to penetrate into the inside of the motor, resulting in leakage of the motor and poor parts.

On the other hand, a mechanical seal is mounted on the outer surface of the rotating shaft located inside the rear casing to prevent leakage of the fluid, but the mechanical seal can not maintain perfect airtightness. Further, there is a problem that the volume of the product due to the mounting of a plurality of parts becomes too large.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a motor- The present invention provides a scroll pump in which a driven rotor is interposed between an intermediate casing and a rear casing which are sequentially coupled to a lower surface of a front casing so as to prevent leakage and component failure due to leakage of water when the fluid is pumped, .

FIG. 1 is a cross-sectional view of a main portion showing a scroll pump according to a conventional technique; FIG.

FIG. 2 is a bottom plan view showing a state in which a front casing is opened to explain a scroll pump according to a related art; FIG.

FIG. 3 is a cross-sectional view showing a main portion showing a scroll pump according to the present invention. FIG.

FIG. 4 is a cross-sectional view of a portion enlarged view of a scroll pump according to the present invention. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

10: front casing 11: inlet

12: Discharge port 20: Fixed scroll

30: orbiting scroll 40: intermediate casing

50: rear casing 41, 51: bearing ring groove

60: Bearing ring 70:

80: coupling means 81: nut

82: male thread portion 100: driving rotor

110: driving magnet housing 111: driving magnet groove

112: shaft yoke 120: driving magnet

200: driven rotor 210: driven magnet housing

211: driven magnet groove 212: through hole

220: servomotor 230:

231: Eccentric shaft

In order to achieve the above object, the scroll pump of the present invention includes: a fixed scroll coupled to a front casing provided with an inlet and an outlet; a orbiting scroll which is eccentrically rotated by being opposed to the fixed scroll; A scroll pump comprising a rotating shaft of a motor, comprising: a driving rotor coupled to the rotating shaft by a coupling means to generate a rotating magnetic force in accordance with a driving force of the motor; an intermediate casing sequentially coupled to a lower surface of the front casing; And a driven rotor which is supported by a plurality of bearings mounted on bearing grooves formed in the respective bearing grooves and eccentrically rotates the orbiting scroll by receiving the rotating magnetic force of the driving rotor.

Accordingly, the scroll pump according to the present invention having the above-described structure comprises an intermediate casing, which is rotatably driven by eccentric rotation of the orbiting scroll, and which is rotatably coupled to the lower surface of the front casing, Therefore, it is possible to prevent electric leakage and component failure due to the leakage of the fluid, and the power of the motor can be transmitted to the orbiting scroll by the rotating magnetic force of the driving rotor and the driven rotor, .

In addition to the above configuration, the driving rotor may include a driving magnet housing having a shaft hole and a plurality of driving magnet grooves penetrating the center portion so as to press the rotation shaft of the motor, and a plurality of driving magnet housings inserted in the plurality of driving magnet grooves, And a driving magnet that generates a rotating magnetic force while being rotated.

Therefore, in the scroll pump according to the present invention constructed as described above, the driving rotor, that is, the driving magnet sandwiched by the plurality of driving magnet grooves provided in the driving magnet housing generates a rotating magnetic force by the driving of the motor, As shown in FIG.

In addition to the above-described structure, the engaging means includes a male screw portion formed on an outer diameter surface of the end of the rotary shaft, and a nut fastened to the male screw portion of the rotary shaft, which is press- fitted into the yoke of the drive magnet housing.

Therefore, in the scroll pump according to the present invention constructed as described above, the constituent magnet housing is press-fitted into the rotation shaft of the motor and then tightened by the nut, thereby facilitating disassembly and assembly.

In addition to the above structure, the driven rotor may include a slave shaft supported by a plurality of bearings mounted on the bearing grooves of the intermediate casing and the rear casing and having an eccentric shaft for eccentrically rotating the orbiting scroll, A driven magnet housing provided with a through hole formed in a central portion thereof and a plurality of driven magnet grooves opposed to the drive magnet groove; a driven magnet disposed in the plurality of driven magnet grooves and indirectly rotated in correspondence with a rotary magnetic force of the drive magnet; Lt; / RTI >

Accordingly, in the scroll pump according to the present invention constructed as described above, the driven magnet of the driven rotor is indirectly rotated corresponding to the rotating magnetic force of the drive rotor to eccentrically rotate the orbiting scroll, so that the external fluid is fed to the discharge port .

Hereinafter, the scroll pump according to the present invention will be described with reference to FIGS. 3 and 4.

FIG. 3 is a cross-sectional view of a main part showing a scroll pump according to the present invention, and FIG. 4 is a cross-sectional view of a partially enlarged main part showing a scroll pump according to the present invention.

3, the scroll pump according to the present invention includes a fixed scroll 20 coupled to a front casing 10 having an intake port 11 and a discharge port 12, A rotary shaft 70 of a motor for applying a driving force to the orbiting scroll 30 and a driving shaft 70 which is fastened to the rotary shaft 70 by a coupling means 80, A driving rotor 100 generating a rotating magnetic force and a bearing groove 41 and 51 formed in the intermediate casing 40 and the rear casing 50 which are sequentially coupled to the lower surface of the front casing 10 And a driven rotor 200 supported by a plurality of bearings 60 and eccentrically rotating the orbiting scroll 30 by receiving a rotating magnetic force of the driving rotor 100.

4, the driving rotor 100 includes a shaft hole 112 and a plurality of driving magnet grooves 111 penetrating the central portion of the driving shaft 100 so as to press the rotation shaft 70 of the motor. A driving magnet housing 110 and a driving magnet 120 which are respectively inserted in the plurality of driving magnet grooves 11 and are rotated according to the power of the motor to generate rotating magnetic force. The engaging means 80 includes a male screw portion 82 formed on the outer diameter surface of the end of the rotary shaft 70 and a male screw portion 82 formed on the outer surface of the rotary shaft 70 inserted into the shaft hole 112 of the driving magnet housing 110 And a nut 81 which is tightly coupled to the male screw portion 82.

4, the driven rotor 200 includes a plurality of bearings 60 mounted in the bearing grooves 41 and 51 of the intermediate casing 40 and the rear casing 50, A driven shaft 230 having an eccentric shaft 231 which is supported by the driven shaft 230 and eccentrically rotates the orbiting scroll 30, a through hole 212 formed to penetrate the driven shaft 230 to penetrate the driven shaft 230, A driven magnet housing 210 having a plurality of driven magnets 211 opposed to the grooves 111 and a plurality of driven magnets 211 fitted in the plurality of driven magnets 211, And a driven magnet 220 which is indirectly rotated.

The operation of the scroll pump according to the present invention will now be described.

3, when power is applied by the rotation shaft 70 of the motor, the driving rotor 100 coupled to the rotation shaft 70 by the coupling means 80 rotates together, Which are respectively formed in the intermediate casing 40 and the rear casing 50 which are sequentially connected to the lower surface of the front casing 10 and which are mounted on the bearing grooves 41 and 51, 60 to rotate the driven rotor 200 indirectly.

At this time, the orbiting scroll (30) is linearly contacted with the fixed scroll (20) by the rotation of the driven rotor (200) and eccentrically rotated to suck the fluid through the suction port (11) of the front casing (10) 12).

As described above, according to the scroll pump of the present invention, a driven rotor, which receives eccentric rotation of the orbiting scroll and eccentrically rotates the eccentric rotation of the orbiting scroll, is interposed between the intermediate casing and the rear casing, It is possible to prevent electric leakage and component failure due to the leakage of the fluid, and the power of the motor can be transmitted to the orbiting scroll by the rotating magnetic force of the driving rotor and the driven rotor, It is effective. Further, since the driving magnet housing is press-fitted into the rotation shaft of the motor and then tightened by the nut, the disassembly and assembly are much easier.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art.

Claims (4)

1. A scroll pump comprising: a fixed scroll coupled to a front casing having an inlet and an outlet; a orbiting scroll which is eccentrically rotated by the fixed scroll; and a rotating shaft of a motor for applying a driving force to the orbiting scroll, A drive rotor which is coupled by a coupling means to generate a rotating magnetic force in accordance with a driving force of the motor, an intermediate casing sequentially coupled to a lower surface of the front casing, and a plurality of bearings And a driven rotor that receives the rotating magnetic force of the driving rotor and eccentrically rotates the orbiting scroll. [2] The apparatus according to claim 1, wherein the driving rotor includes: a driving magnet housing having a shaft hole and a plurality of driving magnet grooves penetrating the center portion to press-fit the rotation shaft of the motor; And a driving magnet for generating a rotating magnetic force while being rotated in accordance with the rotation of the rotary shaft. The motor according to claim 1 or 2, wherein the engaging means comprises a male screw portion formed on an outer diameter surface of the end of the rotary shaft and a nut fastened to the male screw portion of the rotary shaft, . 2. The scroll compressor according to claim 1, wherein the driven rotor includes: a driven shaft having an eccentric shaft supported by a plurality of bearings mounted on bearing grooves of the intermediate casing and the rear casing to eccentrically rotate the orbiting scroll; A driven magnet housing provided with a through hole formed in a central portion thereof to be press-fit and a plurality of driven magnet grooves opposed to the drive magnet groove, and a plurality of driven magnet housings inserted in the plurality of driven magnets and rotated indirectly Wherein the scroll pump is made of a driven magnet.