WO2003048581A1 - Vane supporting apparatus for hermetic compressor - Google Patents

Vane supporting apparatus for hermetic compressor Download PDF

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Publication number
WO2003048581A1
WO2003048581A1 PCT/KR2002/002235 KR0202235W WO03048581A1 WO 2003048581 A1 WO2003048581 A1 WO 2003048581A1 KR 0202235 W KR0202235 W KR 0202235W WO 03048581 A1 WO03048581 A1 WO 03048581A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
torsion bars
vanes
rotating shaft
dividing plate
Prior art date
Application number
PCT/KR2002/002235
Other languages
French (fr)
Inventor
Kwang-Sik Yang
Original Assignee
Lg Electronics Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to BRPI0206976-8A priority Critical patent/BR0206976B1/en
Priority to AU2002365786A priority patent/AU2002365786A1/en
Priority to JP2003549739A priority patent/JP2005511958A/en
Publication of WO2003048581A1 publication Critical patent/WO2003048581A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0845—Vane tracking; control therefor by mechanical means comprising elastic means, e.g. springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3568—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member with axially movable vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps

Definitions

  • the present invention relates to a vane supporting apparatus for a hermetic compressor, and particularly, to a vane supporting apparatus for a hermetic compressor which is able to reduce a length of the compressor in shaft direction by lowering a height.
  • a hermetic compressor divides an inner space of a cylinder into a suction area and a compression area by installing the vane to be contacted to a rotator body, changes the suction area and the compression area with each other successively according to phases of the rotating body when the rotating body is operated to suck, to compress, and to discharge fluid.
  • Figure 1 is a longitudinal cross-sectional view showing an example of a conventional hermetic compressor
  • Figure 2 is a partially enlarged view showing a vane supporting apparatus in the conventional hermetic compressor.
  • the conventional hermetic compressor comprises: a motor device unit consisting of a stator (Ms) and a rotor (Mr) for generating driving power on an inner upper portion of a casing 1 , and a compression device unit connected to the rotor (Mr) for sucking, compressing and discharging the fluid.
  • Ms stator
  • Mr rotor
  • the compression device unit comprises: a cylinder 2 fixed on a lower part of the casing 1 ; a first bearing plate 3A and a second bearing plate 3B fixed on an upper surface and on a lower surface of the cylinder 2 to form an inner space of the cylinder 2; a rotating shaft 4 coupled to the rotor (Mr) of the motor device unit and penetratingly coupled to the respective bearing plates 3A and 3B for transmitting the driving power of the motor device unit to the compression device unit; a dividing plate 5 coupled to the rotating shaft 4 or made integrally with the rotating shaft 4 for dividing the inner space of the cylinder 2 into a first space (S1 ) and a second space (S2); a first vane 6A and a second vane 6B having lower ends and upper ends contacted to both surfaces of the dividing plate 5 respectively for dividing the respective spaces S1 and S2 into the suction area and the compression area when the rotating shaft 4 is rotated; and a first spring assembly 8A and a second spring assembly 8B for elastically supporting the
  • the dividing plate 5 is formed as a disc when it is projected on a plane so that an outer circumferential surface thereof can be slidingly contacted to an inner circumferential surface of the cylinder 2, and both side surfaces of the dividing plate 5 are formed as cam faces of sine wave shape having same thickness from the inner circumferential surface to the outer circumferential surface when these
  • first and second vanes 6A and 6B are formed as cuboids, penetrate the respective bearing plates 3A and 3B to be contacted to the lower and upper cam faces of the dividing plate 5 as described above, and reciprocate toward the shaft direction when the rotating shaft 4 is rotated.
  • outer side surfaces of the respective vanes 6A and 6B are contacted or inserted in the inner circumferential surface of the cylinder 2, however, inner side surfaces of the respective vanes 6A and 6B are coupled to be contacted to the outer circumferential surface of the rotating shaft 4 as slid.
  • the first spring assembly 8A and the second spring assembly 8B comprise a first and a second supporting springs 8a and 8c made of coil compressive spring for supporting rear surfaces of the respective vanes 6A and 6B, and a first spring holder 8b and a second spring holder 8d for receiving the respective supporting springs 8a and 8c and mounted on the first bearing plate 3A and on the second bearing plate 3B.
  • unexplained reference numerals 2a and 2b represent suction ports of the respective spaces S1 and S2, 3a and 3b represent discharge ports, 7A and 7B represent discharge mufflers, 7a and 7b are discharge holes, DP is a discharge pipe, and SP represents a suction pipe.
  • 3a and 3b represent discharge ports
  • 7A and 7B represent discharge mufflers
  • 7a and 7b are discharge holes
  • DP is a discharge pipe
  • SP represents a suction pipe.
  • the first spring 8a and the second spring 8c supporting the respective vanes 6A and 6B are the compressive coil springs having predetermined lengths in shaft direction of the rotating shaft 4, and therefore, a distance (L1 ) between the motor device unit and the compression device unit as much as the length of the compressive coil spring is increased, and the entire length of the compressor is increased in the shaft direction.
  • a vane supporting apparatus for a hermetic compressor comprising: a sealed casing; a motor device unit fixedly coupled to an inner upper part of the casing for generating driving power; a cylinder fixedly coupled to a lower part of the casing; a first bearing plate and a second bearing plate fixed on upper and lower surfaces of the cylinder for forming inner space of the cylinder together; a rotating shaft coupled to a rotor of the motor device unit and located as penetrating the respective bearing plates; a dividing plate coupled to the rotating shaft for dividing the inner space into a plurality of sealed spaces in the inner space of the cylinder; a plurality of vanes contacted to both surfaces of the dividing plate and undergone reciprocating movements along with axial line direction when the rotating shaft is rotated for converting the respective sealed spaces into a suction area and a compression area; at least one or more torsion bars having one side elastically supporting the respective vanes; and a fixing member for fixing the other side of the torsion bar
  • Figure 1 is a longitudinal cross-sectional view showing an example of a conventional hermetic compressor
  • Figure 2 is a partially enlarged view showing a vane supporting apparatus in the conventional hermetic compressor
  • Figure 3 is a longitudinal cross-sectional view showing an embodiment of a hermetic compressor according to the present invention.
  • Figure 4 is a front view showing a vane supporting apparatus in the hermetic compressor according to the present invention.
  • Figure 5 is a plane view showing the vane supporting apparatus in the hermetic compressor according to the present invention
  • Figure 6 is a perspective view showing a coupled status of a torsion bar and a vane in the vane supporting apparatus in the hermetic compressor
  • Figure 7 is a partially enlarged view showing the vane supporting apparatus for the hermetic compressor according to the present invention.
  • Figure 8 is a plane view showing another embodiment of the vane supporting apparatus for the hermetic compressor according to the present invention.
  • FIG. 3 longitudinal cross-sectional view showing an embodiment of a hermetic compressor according to the present invention
  • Figure 4 and Figure 5 are a front view and a plane view showing a vane supporting apparatus in the hermetic compressor according to the present invention
  • Figure 6 is a perspective view showing a coupled status of a torsion bar and a vane in the vane supporting apparatus in the hermetic compressor according to the present invention
  • Figure 7 is a partially enlarged view showing the vane supporting apparatus for the hermetic compressor according to the present invention
  • Figure 8 is a plane view showing another embodiment of the vane supporting apparatus for the hermetic compressor according to the present invention.
  • the compressor including the vane supporting apparatus comprises: a stator (Ms) and a rotor (Mr) fixed on inner upper part of a casing 1 for making a motor device unit, a cylinder 2 fixedly coupled to a lower part of the casing 1 , a first bearing plate 3A and a second bearing plate 3B fixed on upper and lower surface of the cylinder for forming an inner space of the cylinder 2 together, a rotating shaft 4 coupled to the rotor (Mr) and penetrating the respective bearing plates 3A and 3B simultaneously, a dividing plate 5 coupled to the rotating shaft 4 or made integrally with the rotating shaft 4 for dividing the inner space of the cylinder 2 into a first space S1 and a second space S2, a first vane 6A and a second vane 6B of which a lower end and an upper end are contacted to both surfaces of the dividing plate 5 to divide the respective spaces S1 and S2 into a suction area and a compression area when the rotating shaft 4
  • Ms stator
  • the dividing plate 5 is formed as a disc when it is projected on a plane so that an outer circumferential surface of the dividing plate 5 is contacted to the inner circumferential surface of the cylinder 2 as slid, and both side surfaces of the dividing plate 5 are formed as cam faces of sine wave shape having same thickness from the inner circumferential surface to the outer circumferential surface when the side surface is spread.
  • first vane 6A and the second vane 6B are formed as cuboids roughly, one side surfaces thereof are contacted to upper and lower side cam faces of the dividing plate 5 after penetrating the bearing plates 3A and 3B.
  • sliding recesses 6a and 6b are formed so that the first and the second torsion bars 11 and 12 are mounted after sliding toward the radial direction of the rotating shaft 4.
  • the first and second torsion bars 11 and 12, as shown in Figures 4 and 5, make closed loops and are formed as polygons having bent portions (not shown) on intermediate parts thereof.
  • One sides of the bars are mounted on the sliding recesses 6a and 6b of the respective vanes 6A and 6B, and the other sides are fixed by being pushed by additional supporting members 21 and 22 coupled or welded on the respective bearing plates 3A and 3B.
  • first torsion bar 11 and the second torsion bar 12 may be formed as the closed loop of singular material as shown in the present embodiment, however, as shown in Figure 8, these may be formed as opened loops of singular material and fixed on respective surfaces of the bearing plates
  • the bars may be formed as closed loops or the opened loops, and fixing portion and supporting portion are located on different bearing plates from each other.
  • the first torsion bar 11 and the second torsion bar 12 are formed using a linear material having circular or square cross section.
  • unexplained reference numerals 2a and 2b represent suction ports of the respective spaces
  • 3a and 3b represent discharge ports
  • 7A and 7B are discharge mufflers
  • 7a and 7b are discharge holes
  • DP is a discharge pipe
  • SP represents a suction pipe.
  • the rotating shaft 4 is rotated with the dividing plate 5 and the vanes 6A and 6B contacted on upper and lower side surfaces of the dividing plate 5 are undergone reciprocating movements toward upper and lower directions along with the height of the dividing plate 5.
  • the new fluid is sucked into the first space S1 and the second space S2 of the cylinder simultaneously, compressed gradually, and discharged simultaneously as soon as a top dead center or a bottom dead center of the dividing plate 5 reaches to a discharge starting point, and these processes are repeated.
  • the respective torsion bars 11 and 12 are bent along with the respective vanes 6A and 6B as accumulating elastic force centering around fixing points of the respective supporting members 21 and 22 until the dividing plate 5 reaches to the top dead center or to the bottom dead center, and then, restored from the time point when the first and second spaces S1 and S2 starts to suck and pushes the contacting ends of the respective vanes 6A and 6B so as to adhere to the respective cam faces of the dividing plate 5, and thereby, the first and second spaces S1 and S2 can be maintained as sealed.
  • the vanes 6A and 6B are elastically supported by the first torsion bar 11 and the second torsion bar 12, and thereby, the height of the supporting apparatus for supporting the vanes 6A and 6B can be reduced as shown in Figure 7, and a distance (L2) between the motor device unit and the compression device unit can be reduced to reduce the entire length of the compressor.
  • the vanes contacted to both cam faces of the dividing plate are supported by the torsion bars having square or circular cross sections, and thereby, the height of the supporting apparatus supporting the respective vanes is reduced to narrow the distance between the motor device unit and the compression device unit. Accordingly, the length of the compressor in shaft direction can be reduced, and thereby, the compressor can be miniaturized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)

Abstract

A vane (6A, 6B) supporting apparatus for a hermetic compressor supports vanes (6A, 6B) contacting to both cam faces of a dividing plate (5) using torsion bars (11, 12) having square or circular cross sections, and thereby a height of the supporting apparatus supporting the respective vanes (6A, 6B) is lowered to reduce a distance between a motor device unit (M2, M6) and a compression device unit, and accordingly, a length of the compressor in shaft (4) direction is reduced to realize miniaturization of the compressor.

Description

VANE SUPPORTING APPARATUS FOR HERMETIC COMPRESSOR
TECHNICAL FIELD
The present invention relates to a vane supporting apparatus for a hermetic compressor, and particularly, to a vane supporting apparatus for a hermetic compressor which is able to reduce a length of the compressor in shaft direction by lowering a height.
BACKGROUND ART Generally, a hermetic compressor using a vane as a component thereof
(hereinafter, referred to as a hermetic compressor) divides an inner space of a cylinder into a suction area and a compression area by installing the vane to be contacted to a rotator body, changes the suction area and the compression area with each other successively according to phases of the rotating body when the rotating body is operated to suck, to compress, and to discharge fluid.
Figure 1 is a longitudinal cross-sectional view showing an example of a conventional hermetic compressor, and Figure 2 is a partially enlarged view showing a vane supporting apparatus in the conventional hermetic compressor. As shown therein, the conventional hermetic compressor comprises: a motor device unit consisting of a stator (Ms) and a rotor (Mr) for generating driving power on an inner upper portion of a casing 1 , and a compression device unit connected to the rotor (Mr) for sucking, compressing and discharging the fluid. The compression device unit comprises: a cylinder 2 fixed on a lower part of the casing 1 ; a first bearing plate 3A and a second bearing plate 3B fixed on an upper surface and on a lower surface of the cylinder 2 to form an inner space of the cylinder 2; a rotating shaft 4 coupled to the rotor (Mr) of the motor device unit and penetratingly coupled to the respective bearing plates 3A and 3B for transmitting the driving power of the motor device unit to the compression device unit; a dividing plate 5 coupled to the rotating shaft 4 or made integrally with the rotating shaft 4 for dividing the inner space of the cylinder 2 into a first space (S1 ) and a second space (S2); a first vane 6A and a second vane 6B having lower ends and upper ends contacted to both surfaces of the dividing plate 5 respectively for dividing the respective spaces S1 and S2 into the suction area and the compression area when the rotating shaft 4 is rotated; and a first spring assembly 8A and a second spring assembly 8B for elastically supporting the respective vanes 6A and 6B.
The dividing plate 5 is formed as a disc when it is projected on a plane so that an outer circumferential surface thereof can be slidingly contacted to an inner circumferential surface of the cylinder 2, and both side surfaces of the dividing plate 5 are formed as cam faces of sine wave shape having same thickness from the inner circumferential surface to the outer circumferential surface when these
are spread. In addition, the first and second vanes 6A and 6B are formed as cuboids, penetrate the respective bearing plates 3A and 3B to be contacted to the lower and upper cam faces of the dividing plate 5 as described above, and reciprocate toward the shaft direction when the rotating shaft 4 is rotated. In addition, outer side surfaces of the respective vanes 6A and 6B are contacted or inserted in the inner circumferential surface of the cylinder 2, however, inner side surfaces of the respective vanes 6A and 6B are coupled to be contacted to the outer circumferential surface of the rotating shaft 4 as slid. The first spring assembly 8A and the second spring assembly 8B comprise a first and a second supporting springs 8a and 8c made of coil compressive spring for supporting rear surfaces of the respective vanes 6A and 6B, and a first spring holder 8b and a second spring holder 8d for receiving the respective supporting springs 8a and 8c and mounted on the first bearing plate 3A and on the second bearing plate 3B.
In Figures, unexplained reference numerals 2a and 2b represent suction ports of the respective spaces S1 and S2, 3a and 3b represent discharge ports, 7A and 7B represent discharge mufflers, 7a and 7b are discharge holes, DP is a discharge pipe, and SP represents a suction pipe. Hereinafter, operations of the compressor will be described.
When electric power is applied to the motor device unit to rotate the rotor (Mr), the rotating shaft 4 coupled to the rotor (Mr) is rotated to one direction with the dividing plate 5, and the vanes 6A and 6B contacted to upper and lower side surfaces of the dividing plate 5 reciprocate to opposite directions of each other according to the height of the dividing plate 5 to vary volumes of the first and second spaces S1 and S2.
And new fluid is sucked simultaneously through the suction ports 2a and 2b of the first and second spaces S1 and S2, then compressed, and after that, the compressed fluid is discharged simultaneously through the discharge ports 3a and 3b of the respective spaces S1 and S2 as soon as a top dead center or a bottom dead center of the dividing plate 5 reaches to a discharge starting point.
However, in the conventional compressor, the first spring 8a and the second spring 8c supporting the respective vanes 6A and 6B are the compressive coil springs having predetermined lengths in shaft direction of the rotating shaft 4, and therefore, a distance (L1 ) between the motor device unit and the compression device unit as much as the length of the compressive coil spring is increased, and the entire length of the compressor is increased in the shaft direction.
DISCLOSURE OF THE INVENTION
Therefore, it is an object of the present invention to provide a vane supporting apparatus for a compressor which is able to miniaturize the compressor by decreasing a height of supporting members for supporting respective vanes.
To achieve the object, there is provided a vane supporting apparatus for a hermetic compressor, comprising: a sealed casing; a motor device unit fixedly coupled to an inner upper part of the casing for generating driving power; a cylinder fixedly coupled to a lower part of the casing; a first bearing plate and a second bearing plate fixed on upper and lower surfaces of the cylinder for forming inner space of the cylinder together; a rotating shaft coupled to a rotor of the motor device unit and located as penetrating the respective bearing plates; a dividing plate coupled to the rotating shaft for dividing the inner space into a plurality of sealed spaces in the inner space of the cylinder; a plurality of vanes contacted to both surfaces of the dividing plate and undergone reciprocating movements along with axial line direction when the rotating shaft is rotated for converting the respective sealed spaces into a suction area and a compression area; at least one or more torsion bars having one side elastically supporting the respective vanes; and a fixing member for fixing the other side of the torsion bar on the cylinder.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a longitudinal cross-sectional view showing an example of a conventional hermetic compressor;
Figure 2 is a partially enlarged view showing a vane supporting apparatus in the conventional hermetic compressor;
Figure 3 is a longitudinal cross-sectional view showing an embodiment of a hermetic compressor according to the present invention;
Figure 4 is a front view showing a vane supporting apparatus in the hermetic compressor according to the present invention;
Figure 5 is a plane view showing the vane supporting apparatus in the hermetic compressor according to the present invention; Figure 6 is a perspective view showing a coupled status of a torsion bar and a vane in the vane supporting apparatus in the hermetic compressor
according to the present invention;
Figure 7 is a partially enlarged view showing the vane supporting apparatus for the hermetic compressor according to the present invention; and Figure 8 is a plane view showing another embodiment of the vane supporting apparatus for the hermetic compressor according to the present invention.
MODES FOR CARRYING OUT THE PREFERRED EMBODIMENTS
Hereinafter, a vane supporting apparatus for a hermetic compressor according to the present invention will be described with reference to embodiments shown in accompanying Figures. Figure 3 longitudinal cross-sectional view showing an embodiment of a hermetic compressor according to the present invention, Figure 4 and Figure 5 are a front view and a plane view showing a vane supporting apparatus in the hermetic compressor according to the present invention, Figure 6 is a perspective view showing a coupled status of a torsion bar and a vane in the vane supporting apparatus in the hermetic compressor according to the present invention, Figure 7 is a partially enlarged view showing the vane supporting apparatus for the hermetic compressor according to the present invention, and Figure 8 is a plane view showing another embodiment of the vane supporting apparatus for the hermetic compressor according to the present invention. As shown therein, the compressor including the vane supporting apparatus according to the present invention comprises: a stator (Ms) and a rotor (Mr) fixed on inner upper part of a casing 1 for making a motor device unit, a cylinder 2 fixedly coupled to a lower part of the casing 1 , a first bearing plate 3A and a second bearing plate 3B fixed on upper and lower surface of the cylinder for forming an inner space of the cylinder 2 together, a rotating shaft 4 coupled to the rotor (Mr) and penetrating the respective bearing plates 3A and 3B simultaneously, a dividing plate 5 coupled to the rotating shaft 4 or made integrally with the rotating shaft 4 for dividing the inner space of the cylinder 2 into a first space S1 and a second space S2, a first vane 6A and a second vane 6B of which a lower end and an upper end are contacted to both surfaces of the dividing plate 5 to divide the respective spaces S1 and S2 into a suction area and a compression area when the rotating shaft 4 is rotated, and a first torsion bar 11 and a second torsion bar 12 for elastically supporting the respective vanes 6A and 6B.
The dividing plate 5 is formed as a disc when it is projected on a plane so that an outer circumferential surface of the dividing plate 5 is contacted to the inner circumferential surface of the cylinder 2 as slid, and both side surfaces of the dividing plate 5 are formed as cam faces of sine wave shape having same thickness from the inner circumferential surface to the outer circumferential surface when the side surface is spread.
In addition, the first vane 6A and the second vane 6B are formed as cuboids roughly, one side surfaces thereof are contacted to upper and lower side cam faces of the dividing plate 5 after penetrating the bearing plates 3A and 3B. In addition, on the other side surfaces, sliding recesses 6a and 6b are formed so that the first and the second torsion bars 11 and 12 are mounted after sliding toward the radial direction of the rotating shaft 4. The first and second torsion bars 11 and 12, as shown in Figures 4 and 5, make closed loops and are formed as polygons having bent portions (not shown) on intermediate parts thereof. One sides of the bars are mounted on the sliding recesses 6a and 6b of the respective vanes 6A and 6B, and the other sides are fixed by being pushed by additional supporting members 21 and 22 coupled or welded on the respective bearing plates 3A and 3B.
On the other hand, the first torsion bar 11 and the second torsion bar 12 may be formed as the closed loop of singular material as shown in the present embodiment, however, as shown in Figure 8, these may be formed as opened loops of singular material and fixed on respective surfaces of the bearing plates
3A and 3B.
Also, the bars may be formed as closed loops or the opened loops, and fixing portion and supporting portion are located on different bearing plates from each other. In addition, the first torsion bar 11 and the second torsion bar 12 are formed using a linear material having circular or square cross section.
In Figures, unexplained reference numerals 2a and 2b represent suction ports of the respective spaces, 3a and 3b represent discharge ports, 7A and 7B are discharge mufflers, 7a and 7b are discharge holes, DP is a discharge pipe, and SP represents a suction pipe.
Hereinafter, operations and effects of the vane supporting apparatus for the compressor according to the present invention will be described as follows.
When the electric power is applied to the motor device unit, the rotating shaft 4 is rotated with the dividing plate 5 and the vanes 6A and 6B contacted on upper and lower side surfaces of the dividing plate 5 are undergone reciprocating movements toward upper and lower directions along with the height of the dividing plate 5. In above process, the new fluid is sucked into the first space S1 and the second space S2 of the cylinder simultaneously, compressed gradually, and discharged simultaneously as soon as a top dead center or a bottom dead center of the dividing plate 5 reaches to a discharge starting point, and these processes are repeated.
At that time, the respective torsion bars 11 and 12 are bent along with the respective vanes 6A and 6B as accumulating elastic force centering around fixing points of the respective supporting members 21 and 22 until the dividing plate 5 reaches to the top dead center or to the bottom dead center, and then, restored from the time point when the first and second spaces S1 and S2 starts to suck and pushes the contacting ends of the respective vanes 6A and 6B so as to adhere to the respective cam faces of the dividing plate 5, and thereby, the first and second spaces S1 and S2 can be maintained as sealed.
As described above, the vanes 6A and 6B are elastically supported by the first torsion bar 11 and the second torsion bar 12, and thereby, the height of the supporting apparatus for supporting the vanes 6A and 6B can be reduced as shown in Figure 7, and a distance (L2) between the motor device unit and the compression device unit can be reduced to reduce the entire length of the compressor.
In the vane supporting apparatus for the hermetic compressor according to the present invention, the vanes contacted to both cam faces of the dividing plate are supported by the torsion bars having square or circular cross sections, and thereby, the height of the supporting apparatus supporting the respective vanes is reduced to narrow the distance between the motor device unit and the compression device unit. Accordingly, the length of the compressor in shaft direction can be reduced, and thereby, the compressor can be miniaturized.
As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalence of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A vane supporting apparatus for a hermetic compressor, comprising: a sealed casing; a motor device unit fixedly coupled to an inner upper part of the casing for generating driving power; a cylinder fixedly coupled to a lower part of the casing; a first bearing plate and a second bearing plate fixed on upper and lower surfaces of the cylinder for forming inner space of the cylinder together; a rotating shaft coupled to a rotor of the motor device unit and located as penetrating the respective bearing plates; a dividing plate coupled to the rotating shaft for dividing the inner space into a plurality of sealed spaces in the inner space of the cylinder; a plurality of vanes contacted to both surfaces of the dividing plate and undergone reciprocating movements along with axial line direction when the rotating shaft is rotated for converting the respective sealed spaces into a suction area and a compression area; at least one or more torsion bars having one side elastically supporting the respective vanes; and a fixing member for fixing the other side of the torsion bar on the cylinder.
2. The apparatus of claim 1 , wherein the torsion bars are formed as closed loops having bent portions on intermediate parts thereof.
3. The apparatus of claim 1 , wherein the torsion bars are formed as opened loops having bent portions on intermediate parts thereof.
4. The apparatus of claim 1 , wherein the vanes includes sliding recesses on surfaces contacting to the torsion bars so that the torsion bars can be slid toward a radial direction of the cylinder.
5. The apparatus of claim 1 , wherein the torsion bars have circular or square cross sections.
PCT/KR2002/002235 2001-12-05 2002-11-28 Vane supporting apparatus for hermetic compressor WO2003048581A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BRPI0206976-8A BR0206976B1 (en) 2001-12-05 2002-11-28 reed support apparatus for airtight compressor.
AU2002365786A AU2002365786A1 (en) 2001-12-05 2002-11-28 Vane supporting apparatus for hermetic compressor
JP2003549739A JP2005511958A (en) 2001-12-05 2002-11-28 Vane support device for hermetic compressor

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KR1020010076702A KR100806110B1 (en) 2001-12-05 2001-12-05 Vane supporting device for enclosed compressor
KR2001/76702 2001-12-05

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WO2003048581A1 true WO2003048581A1 (en) 2003-06-12

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US (1) US20030190248A1 (en)
JP (1) JP2005511958A (en)
KR (1) KR100806110B1 (en)
AU (1) AU2002365786A1 (en)
BR (1) BR0206976B1 (en)
WO (1) WO2003048581A1 (en)

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Publication number Priority date Publication date Assignee Title
ITTV20110140A1 (en) * 2011-10-14 2013-04-15 Perinot Claudio VOLUMETRIC ROTARY MACHINE.

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US4664608A (en) * 1985-11-04 1987-05-12 General Electric Company Rotary compressor with reduced friction between vane and vane slot
EP0532250A1 (en) * 1991-09-09 1993-03-17 General Electric Company Rotary compressor
JPH06257577A (en) * 1993-03-08 1994-09-13 Matsushita Refrig Co Ltd Horizontal rotary compressor

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US3532448A (en) * 1969-03-18 1970-10-06 Gen Electric Rotary compressor
JPS5841292A (en) * 1981-09-04 1983-03-10 Hitachi Ltd Rotary compressor
JPS61175593U (en) * 1984-12-27 1986-11-01
SG75080A1 (en) * 1994-11-29 2000-09-19 Sanyo Electric Co Refrigerating apparatus and lubricating oil composition
JPH08210283A (en) * 1995-02-07 1996-08-20 Matsushita Electric Ind Co Ltd Rotary type compressor
KR100763157B1 (en) * 2001-11-20 2007-10-05 주식회사 엘지이아이 Vane supporting device for enclosed compressor

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US4664608A (en) * 1985-11-04 1987-05-12 General Electric Company Rotary compressor with reduced friction between vane and vane slot
EP0532250A1 (en) * 1991-09-09 1993-03-17 General Electric Company Rotary compressor
JPH06257577A (en) * 1993-03-08 1994-09-13 Matsushita Refrig Co Ltd Horizontal rotary compressor

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BR0206976A (en) 2008-08-26
US20030190248A1 (en) 2003-10-09
KR100806110B1 (en) 2008-02-21
KR20030046229A (en) 2003-06-12
BR0206976B1 (en) 2011-04-19
JP2005511958A (en) 2005-04-28
AU2002365786A1 (en) 2003-06-17

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