WO2003060327A1

WO2003060327A1 - Compressor having cylindrical shape vane

Info

Publication number: WO2003060327A1
Application number: PCT/KR2002/002441
Authority: WO
Inventors: Kun-Hyeong Lee; Jae-Woo Ahn; Hyoung-Joo Cho
Original assignee: Lg Electronics Inc.
Priority date: 2001-12-28
Filing date: 2002-12-26
Publication date: 2003-07-24
Also published as: KR100763160B1; BR0207679A; BR0207679B1; KR20030057036A; EP1458980A1; JP2005515353A; AU2002359039A1

Abstract

A compressor having cylindrical shape vanes (120), in which the compressor comprises a cylinder assembly (D) having a suction flow path (100) and a discharge flow path connected to an inner space and having vane insertion holes (45, 55) penetrated as a circular shape at upper and lower surfaces (41, 51) thereof; a Z-plate (22) for dividing the inner space into a plurality of compression spaces in the cylinder assembly (D) and for making a fluid be sucked, compressed, and discharged by being rotated by a motor unit, and cylindrical shape vanes (120) inserted to the vane insertion holes (45, 55) and contacted with both sides of the Z-plate (22) for dividing the respective compression spaces into a suction region and a compression region by a reciprocal movement. In the compressor having cylindrical shape vanes (120), vanes are smoothly operated, a process for construction components is simplified, and its construction components are simple, thereby enhancing a reliability of a driving and enhancing its assembly productivity.

Description

COMPRESSOR HAVING CYLINDRICAL SHAPE VANE

TECHNICAL FIELD

The present invention relates to a Z-compressor using a Z-plate, and more particularly, to a compressor having a cylindrical shape vane, which is tightly contacted to both sides of the Z-plate to convert an inner space of a cylinder into a suction region and a compression region.

BACKGROUND ART Generally, a compressor is a device for converting mechanical energy into compression energy of a compression fluid, and a refrigerating compressor is largely classified into a reciprocation compressor, a scroll compressor, a centrifugal compressor, and a rotary compressor by compression methods.

The present applicant has developed a compressor having a Z-plate with a novel concept, which can be classified into the rotary compressor (hereinafter, will be called as 'Z'-compressor), and filed an application for the invention to the

Korean Industrial Patent Office (Application No. 10-1999-0042381) which has been disclosed with a publication number 2001-0035687.

Figures 1 , 2, and 3 illustrate a compression unit of a Z-compressor which is first claimed by D the present applicant. .

As shown in the Figures, a compression unit of a Z-compressor includes a cylinder assembly having an inner space V and provided with a suction flow path f1 and a discharge flow path f2 connected to the inner space V to be fixed to the hermitic container 10, and a rotary axis 20 engaged to the motor unit M which generates a driving force and inserted to penetrate a center of the inner space V of the cylinder assembly D.

The cylinder assembly D includes a cylinder 30 having a ring shape therein, and upper and lower bearings 40 and 50 respectively engaged to upper and lower surfaces of the cylinder 30 for forming an inner space V with the cylinder 30 and for supporting the rotary axis 20.

The upper and lower bearings 40 and 50 includes bearing plate portions 41 and 51 , supporting portions 42 and 52 extended from the bearing plate portions 41 and 51 with a predetermined height and an outer diameter, axis insertion holes, 43 and 53 formed to penetrate a center of the supporting portions 42 and 52 and the bearing plate portions 41 and 51 , and vane slots 44 and 54 penetrated at one side of the plate portions 41 and 51.

The bearing plate portion 41 of the upper bearing 40 covers one side of the cylinder 30 and is engaged thereto. Also, the bearing plate 51 of the lower bearing 50 covers the other side of the cylinder 30 and is engaged thereto.

The rotary axis 20 includes an axis portion 21 inserted to the axis insertion holes 43 and 53 of the upper and lower bearings 40 and 50 with a predetermined outer diameter and a length, and a Z-plate 22 extended from one side of the axis portion 21 for dividing the inner space V into first and second spaces V1 and V2.

The Z-plate 22 is formed as a circular shape having a predetermined thickness, and when seen at a lateral side, the Z-plate is composed of an upper side convex curved surface portion r1 having a convex surface, a lower concave curved surface portion r2 having a concave surface, and a connection curved surface portion r3 for connecting the r1 and r2. That is, the Z-plate 22 is a curved surface of a sine wave type, in which the convex bent surface portion r1 and the concave curved surface portion r2 are formed with an angle of 180° each other. Vanes 70 are respectively inserted to the vane slot 44 of the upper bearing

40 and the vane slot 54 of the lower bearing 50. An elasticity supporting member 80 for supporting the vanes 70 is respectively engaged to the upper and lower bearings 40 and 50. At this time, the vanes 70 are respectively located at upper and lower portions of the Z-plate 22 and have a same phase when the cylinder assembly D is seen on a horizontal plane.

The vanes 70 includes a contact curved surface portion 72 of a rounding shape contacted with a sine wave type curved surface of the Z-plate 22 at one side of a vane body 71 having a predetermined thickness as a square form, an outer curved surface portion 73 contacted with an inner wall of the inner space V of the cylinder assembly D at both sides of the vane body 71 , and an inner curved surface portion 74 contacted with an outer circumference portion of the rotary axis 20. The vane slots 44 and 54 for inserting the vanes 70 are formed as a square form correspondingly to a sectional shape of the vanes 70.

The elasticity supporting means 80 includes a stopper 81 engaged to an upper surface of the bearing, and a compression coil spring 82 engaged in the stopper 81 for elastically supporting the vanes 70.

An open/close means 90 for opening/closing the discharge flow path f2 and discharging gas compressed in the compression region V1 b and V2b of the first and second spaces V1 and V2 is engaged to the cylinder assembly D. Also, a suction pipe 100 is engaged to the hermetic container 10 to be connected to the suction flow path f1.

In Figure 1 , a reference numeral 110 denotes a muffler. Operations of the Z-compressor will be explained.

First, if the rotary axis 20 rotates by receiving a driving force of the motor unit M, the Z-plate 22 of the rotary axis 20 rotates at the inner space V of the cylinder assembly D. As the Z-plate 22 of the rotary axis rotates at the inner space V of the cylinder assembly D, the vanes 70 contacted with the Z-plate 22 move together, so that the first and second spaces V1 and V2 of the inner space divided by the Z-plate 22 are converted into a suction region Via and V2a respectively, and gas is sucked, compressed, and discharged by the open/close means 90, which is repeated.

As shown in Figure 4, as the Z-plate 22 of the rotary axis rotates at the inner space V of the cylinder assembly D, the vanes 70 located in a radial manner from an axis of the Z-plate 22 are elastically supported by the compression coil spring 82 of the elasticity supporting means 80, guided by the vane slots 44 and 54, and reciprocate up and down (in drawing) straightly along the sine wave type curved surface of the Z-plate 22. However, in the conventional Z-compressor, the vanes 70 for dividing the first and second spaces V1 and V2 of the inner space by moving up and down along the Z-plate 22 and for converting the first and second spaces V1 and V2 into suction regions Via and V2a and compression regions V1b and V2b are formed as a square plate shape, thereby having a difficult process.

Also, the vane slots 44 and 54 for inserting the vanes 70 have a predetermined width and a length, and inner walls of the both sides are formed as a square shapes with curved surfaces, thereby having difficulty in processing the vane slots 44 and 54 and lowering a process productivity.

Especially, since a precision finishing has to be performed between the vanes 70 and the vane slots 44 and 54 for inserting the vanes so as not to leak compression gas, a process ability is reduced, thereby having a problem that a large amount of production is not possible. Also, a construction of the elasticity supporting means 80 for elastically supporting the vanes 70 is complicated, thereby lowering a process productivity.

DISCLOSURE OF THE INVENTION

Therefore, it is an object of the present invention to provide a compressor having cylindrical shape vanes, in which the vanes are in contact with both sides of the Z-plate for converting the inner space divided by the Z-plate into a suction region and a compression region, thereby facilitating a process and simplifying a construction. To achieve these objects, there is provided a compressor having cylindrical shape vanes, the compressor comprising a cylinder assembly having a suction flow path and a discharge flow path connected to an inner space and having vane insertion holes penetrated as a circular shape at upper and lower surfaces; a Z- plate for dividing the inner space into a plurality of compression spaces in the cylinder assembly and for making a fluid be sucked, compressed, and discharged by being rotated by a motor part; and cylindrical shape vanes inserted to the vane insertion holes and contacted with both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by a reciprocal movement.

The vanes further include one wire spring for supplying elasticity force so as to adhere the vanes to the Z-plate.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a longitudinal sectional view showing a compression unit of a Z-compressor in accordance with the conventional art;

Figure 2 is a cross-sectional view showing a compression unit of a Z- compressor in accordance with the conventional art; Figure 3 is a partially-cut perspective view showing a compression unit of a Z-compressor in accordance with the conventional art and a vane enlargement view;

Figure 4 is a detail view showing an elasticity supporting means of a Z- compressor in accordance with the conventional art; Figure 5 is a longitudinal sectional view showing a compression unit of a

Z-compressor having cylindrical shape vanes according to the present invention;

Figure 6 is a cross-sectional view showing a compression unit of a Z- compressor having cylindrical shape vanes according to the present invention and a detail view of vanes;

Figure 7 is a partially- cut perspective view showing a compression unit of a Z-compressor having cylindrical shape vanes according to the present invention;

Figure 8 is a disassembled perspective view showing main parts of a Z- 5 compressor having cylindrical shape vanes according to the present invention; and

Figure 9 is a longitudinal sectional view showing main parts of a Z- compressor having cylindrical shape vanes according to the present invention.

0 MODES FOR CARRYING OUT THE PREFERRED EMBODIMENTS

Hereinafter, the compressor having cylindrical shape vanes according to the present invention will be explained with reference to the attached drawings.

Figures 5, 6, and 7 illustrate a Z-compressor having cylindrical shape vanes according to the present invention. Parts having the same constructions 5 with the conventional art will be endowed the same reference numerals.

Referring to Figure 5, a compression unit of a Z-compressor includes a cylinder assembly having an inner space V and provided with a suction flow path f1 and a discharge flow path f2 connected to the inner space V to be fixed to the hermitic container 10, and a rotary axis 20 engaged to the motor unit M which o generates a driving force and inserted to penetrate a center of the inner space V of the cylinder assembly D.

. The cylinder assembly D includes a cylinder 30 having a ring shape therein, and upper and lower bearings 40 and 50 respectively engaged to upper and lower surfaces of the cylinder 30 for forming an inner space V with the cylinder 30 and for supporting the rotary axis 20.

The upper and lower bearings 40 and 50 includes bearing plate portions

41 and 51 , supporting portions 42 and 52 extended from one side of the bearing plate portions 41 and 51 with a predetermined height and an outer diameter, axis insertion holes, 43 and 53 formed to penetrate a center of the supporting portions

42 and 52 and the bearing plate portions 41 and 51 , and vane slots 44 and 54 penetrated at one side of the plate portions 41 and 51.

In the upper bearing 40, the bearing plate portion 41 covers one side of the cylinder 30 and the rotary axis 20 is inserted to the axis insertion hole 43. Also, in the lower bearing 50, the bearing plate 51 covers the other side of the cylinder 30 and the rotary axis 20 is inserted to the axis insertion hole 53.

The rotary axis 20 includes an axis portion 21 inserted to the axis insertion holes 43 and 53 of the upper and lower bearings 40 and 50 with a predetermined outer diameter and a length, and a Z-plate 22 extended from one side of the axis portion 21 for dividing the inner space V into first and second spaces V1 and V2. The Z-plate 22 is formed as a circular shape having a predetermined thickness, and when seen at a lateral side, the Z-plate is composed of an upper side convex curved surface portion r1 having a convex surface, a lower side concave curved surface portion r2 having a concave surface, and a connection curved surface portion r3 for connecting the r1 and r2. That is, the Z-plate 22 is a curved surface of a sine wave, in which the convex curved surface portion r1 and the concave curved surface portion r2 are located with an angle of 180° each other.

Vanes of a cylindrical shape having a predetermined length 120 are respectively inserted to the vane inserting hole 45 of the upper bearing and the vane inserting hole 55 of the lower bearing. The vanes are respectively located in the first and second spaces V1 and V2. An elasticity supporting member 130 for supporting the vanes 120 is respectively engaged to the upper and lower bearings 40 and 50. At this time, the vanes 120 are respectively located at upper and lower portions of the Z-plate 22 and have a same phase when the cylinder assembly D is seen on a horizontal plane. As shown in Figure 8, the vanes 120 includes a cylindrical body 121 having an outer diameter corresponding to an inner diameter of the vane inserting holes 45 and 55 and a predetermined length, and a contact curved surface portion 122 of a rounding shape contacted with a curved surface of the Z-plate 22 at one side of the cylindrical body 121. The inner diameter of the vane inserting holes 45 and 55 and the outer diameter of the vanes 120 are formed to be equal to a distance between an inner circumference surface of the cylinder 30 and an outer circumference surface of the rotary axis 22.

The elasticity supporting means 130 includes a fixation recess 123 having a predetermined width and a depth at one side surface of the vanes 120, and a wire spring 131 having both ends of a predetermined shape, the both ends respectively inserted to the fixation recess 123 of the vanes 120.

The fixation recess 123 of the vanes 120 is formed as a straight line shape at a center of one side surface of the cylindrical body with a predetermined width and a depth. The wire spring 131 includes a bent wire portion 131a formed as a 'C-channel' shape, an extended wire portion 131b respectively extended from both ends of the wire portion 131a as a straight line form, and a fixation wire portion 131c bent and extended from the both ends of the extended wire portion 131b and respectively inserted to the fixation recess 123 of the vanes 120.

An open/close means 90 for opening/closing the discharge flow path f2 and for discharging gas compressed in the compression regions V1 b and V2b of the first and second spaces V1 and V2 is engaged to the cylinder assembly D. Also, a suction pipe 100 connected to the suction flow path f1 is engaged to the hermetic container 10.

An unexplained code 110 denotes a muffler.

Hereinafter, operations and effects of the Z-compressor having cylindrical shape vanes according to the present invention will be explained.

First, if the rotary axis 20 rotates by receiving a driving force of the motor unit M, the Z-plate 22 of the rotary axis 20 rotates at the inner space V of the cylinder assembly D.

As the Z-plate 22 of the rotary axis rotates at the inner space V of the cylinder assembly, the vanes 120 contacted with the Z-plate 22 move together, so that the first and second spaces V1 and V2 of the inner space divided by the Z-plate 22 are converted into a suction region Via and V2a respectively, and gas is sucked in the first and second spaces V1 and V2, compressed, and discharged by the open/close means 90, which is repeated.

As shown in Figure 9, as the Z-plate 22 of the rotary axis rotates at the inner space V of the cylinder assembly, the vanes 120 elastically supported by the wire spring 131 of the elasticity supporting means 130 are guided by the vane inserting holes 45 and 55 and reciprocate up and down (in drawing) straightly along the sine wave type surface of the Z-plate 22. At this time, since the vanes 120 are elastically connected to one another at the same time by the wire spring 131 , the vanes move up and down together and the two vanes 120 and the wire spring 131 move together, thereby making the two vanes 120 move along the sine wave type surface of the Z-plate stably. Also, in the Z-compressor according to the present invention, the vanes 120 for dividing the first and second spaces V1 and V2 of the inner space by moving up and down along the Z-plate 22 of the rotary axis and for converting the first and second spaces V1 and V2 into suction regions Via and V2a and compression regions V1b and V2b are formed as a cylindrical shape, that is, an outer diameter of the vane is a constant cylindrical shape, thereby having an easy process. Also, the vane inserting holes 45 and 55 for inserting the vanes 120 are circular holes having a predetermined inner diameter, thereby having an easy process.

Also, the elasticity supporting means 130 for elastically supporting the vanes 120 is made of the wire spring 131 having a predetermined shape, thereby having simple construction components. That is, in the conventional art, the elasticity supporting means is made of two stoppers 81 and two compression coil springs 82, thereby having complicated construction components. However, in the present invention, the elasticity supporting means is made of the fixation recess 123 and the wire spring 131 provided at the vanes 120, thereby having simple construction components.

In the compressor having cylindrical shape vanes according to the present invention, the vanes are formed as a cylindrical shape and provided with elasticity force by one wire spring, so that the vanes are operated smoothly and a process of construction components becomes easy and simple. According to this, a reliability of a driving is enhanced, a fabrication cost is reduced, and a process productivity is enhanced.

It will be apparent to those skilled in the art that various modifications and variations can be made in the plasma polymerization on the surface of the material of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A compressor having cylindrical shape vanes, the compressor comprising: a cylinder assembly having a suction flow path and a discharge flow path connected to an inner space and having vane insertion holes penetrated as a circular shape at upper and lower surfaces thereof; a Z-plate for dividing the inner space into a plurality of compression spaces in the cylinder assembly and for making a fluid be sucked, compressed, and discharged by being rotated by a motor unit; and cylindrical shape vanes inserted to the vane insertion holes and contacted with both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by a reciprocal movement.

2. The compressor of claim 1 , wherein the cylinder assembly includes

a cylinder having a ring shape, and upper and lower bearings respectively engaged to upper and lower surfaces of the cylinder for supporting a rotary axis which rotates the Z-plate.

3. The compressor of claim 2, wherein the vane insertion holes are

formed at the upper and lower bearings.

4. The compressor of claim 1 further comprises an elasticity supporting means for tightly contacting the respective vanes to the Z-plate behind the vanes.

5. The compressor of claim 4, wherein the elasticity supporting means is composed of one wire spring for supplying elastic force to the vanes at the same time.

6. The compressor of claim 5, wherein the vanes include a fixation recess for inserting the wire spring, respectively.

7. The compressor of claim 5, wherein the wire spring has a 'C- channel' shape.

8. The compressor of claim 5, wherein the wire spring includes a bent wire portion formed as a 'C-channel' shape, an extended wire portion bent and extended from both ends of the wire portion as a straight line form, and a fixation wire portion bent and extended from both ends of the extended wire portion and fixed to the cylindrical shape vanes.

9. A compressor having cylindrical shape vanes, the compressor comprising: a cylinder assembly having a suction flow path and a discharge flow path connected to an inner space and having vane insertion holes penetrated as a circular shape at upper and lower surfaces thereof; a Z-plate for dividing the inner space into a plurality of compression spaces in the cylinder assembly and for making a fluid be sucked, compressed, and discharged by being rotated by a motor part; two cylindrical shape vanes inserted to the vane insertion holes and contacted with both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by a reciprocal movement;

and one wire spring for supplying elastic force so as to adhere the two vanes to the Z-plate.