JP2005337158A - Compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable compressor provided with an oil pump capable of supplying sufficient oil to a sliding part constructing the compressor even at a time of low speed operation. <P>SOLUTION: This compressor is provided with an oil pump 130 formed on an lower end of a shaft 117. The oil pump 130 is provided with a cylindrical member 133 fixed in a cylindrical cavity part 131 formed at a lower end of the shaft 117, a sleeve supported on same axis as the shaft 117 and rotatably arranged on the cylindrical member, and an oil head means 147 arranged on same axis as the shaft 117 and rotating together with the shaft 117. The highly reliable compressor making leak from an oil passage small and securing oil conveyance quantity to a compression element 110 even at low speed rotation can be provided by providing oil seal means between the cylindrical member 131 and the sleeve and providing the insertion member arranged movably in a radial direction in the sleeve. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement of an oil pump that supplies oil to a sliding portion of a compressor.

  In recent years, demand for the global environment has accelerated the trend toward energy saving in household refrigerator-freezers and air conditioners. Under such circumstances, the compressor has been converted into an inverter, and the operation speed has been reduced at a low speed. With conventional centrifugal pumps, it has become difficult to supply sufficient oil to the sliding parts constituting the compressor.

  As a conventional compressor, there is a compressor provided with a viscous pump that can easily obtain a stable pumping capacity even at a low speed, instead of a centrifugal pump (see, for example, Patent Document 1).

  The prior art compressor will be described below with reference to the drawings. In the following description, the upper and lower relationships are based on a state where the compressor is installed in a normal posture.

  FIG. 8 is a cross-sectional view of a conventional compressor described in Patent Document 1. FIG. 9 is an enlarged view of a main part of a conventional compressor.

  8 and 9, oil 1 is stored at the bottom of a sealed container (not shown). The electric element 5 includes a stator 6 and a rotor 7.

  A rotor 7 is fitted to a shaft 10 provided in a compression element (not shown), and at least a lower end is immersed in the oil 1 and a cylindrical extension 15 that rotates coaxially with the shaft 10 is fixed. ing.

  A spiral groove 16 is formed in the cylindrical extension 15 so that the oil 1 rises as the shaft 10 rotates, and a sleeve 21 is disposed in the cylindrical cavity 20 formed at the lower end of the shaft 10. It is installed. The sleeve 21 has a slight gap 22 in the axial direction of the shaft 10 between the sleeve 21 and the cylindrical cavity 20. The sleeve 21 includes a spiral groove 16 of the cylindrical extension 15 to form an oil passage 23, and is fixed to the stator 6. The arm 24 is restrained in the rotational direction.

  The operation of the compressor configured as described above will be described below.

When electricity is supplied to the electric element 5, the rotor 7 rotates, and the shaft 10 rotates accordingly, and the compression element (not shown) performs a predetermined operation. The oil 1 is viscous in the spiral groove 16 as the cylindrical extension 15 rotates in the oil passage 23 formed between the spiral groove 16 formed in the cylindrical extension 15 and the sleeve 21. When it is dragged, the rotation rises and the shaft 10 is pumped up. Since the oil 1 does not depend only on the centrifugal force that decreases at a low rotation, but is dragged by a viscous force and rises in rotation, the oil 1 is pumped up to a compression element sliding portion (not shown) even at a low rotation.
International Publication No. 93/225557 Pamphlet

  However, in the above-described conventional configuration, when the cylindrical extension 15 and the shaft 10 are difficult to be fixed on the same axis and misalignment occurs, the spiral groove 16 formed in the cylindrical extension 15 causes the cylindrical cavity 20 during rotation of the compressor. Wears due to swirling contact inside.

  As a result, it is difficult to supply sufficient oil 1 to the compression element, and the compression element may be worn and locked.

  Further, when the oil 1 that has risen through the oil passage 23 formed between the cylindrical extension 15 and the sleeve 21 leaks from the gap 22, the amount of oil transported to the compression element sliding portion decreases. In particular, at low speed rotation with a small oil conveyance amount, it is difficult to supply sufficient oil 1 to the compression element, and the compression element wears and locks.

  The present invention solves the above-described conventional problems, and prevents oil from being misaligned between the cylindrical extension portion and the shaft, so that oil can be stably supplied, and oil from the gap between the cylindrical cavity portion and the sleeve can be supplied. An object is to provide a highly reliable compressor by supplying sufficient oil to the compressor element by preventing leakage.

  In order to solve the above-described conventional problems, the compressor of the present invention is provided with an oil seal means between the cylindrical cavity and the sleeve, and provided with an insertion member that is rotatably disposed in the sleeve. Rotating means that rotates together with the shaft is provided. Oil seal means between the cylindrical cavity and the sleeve prevents oil leakage from the gap between the cylindrical cavity and the sleeve. And, it has the effect that sufficient oil can be supplied to the sliding portion of the compressor element.

  Also, since the oil pressure generated when the oil interposed between the sleeve and the insertion member is dragged viscously and rises and rotates, the insertion member constantly tries to keep the insertion member coaxial with the sleeve. It has the effect of preventing the occurrence of misalignment of the member and stably supplying oil.

  The compressor according to the present invention is provided with an oil head means and an oil seal means, prevents a decrease in the amount of oil transport, ensures oil supply to the sliding portion constituting the compressor even at low speed rotation, and is reliable. A high compressor can be provided.

  According to the first aspect of the present invention, oil is stored in a sealed container and a compression element driven by an electric element composed of a stator and a rotor is accommodated, and the lower end of the compression element extends vertically into the oil. A rotating shaft and an oil pump formed at the lower end of the shaft, and the oil pump is supported on the same axis as the cylindrical cavity formed at the lower end of the shaft and is rotatable in the cylindrical cavity. The sleeve, the rotation restraining means for restraining the rotation of the sleeve, and the insertion member arranged coaxially with the shaft and arranged to be movable in the radial direction within the sleeve, are arranged coaxially with the shaft. An oil head means that rotates together with the shaft, and an oil seal means is provided between the cylindrical cavity and the sleeve, and the insertion member Rotating means that rotates together with the shaft is provided, and oil leakage from the gap between the cylindrical cavity and the sleeve can be prevented by the oil seal means between the cylindrical cavity and the sleeve. The effect that the amount of oil transported to the sliding portion can be secured and the reliability can be improved is obtained.

  Further, since the insertion member rotates together with the shaft by the rotating means, the oil pressure generated when the oil interposed between the sleeve and the insertion member is dragged in a viscous manner and works up all around the circumference makes it continuously inserted. The member tries to keep coaxial with the sleeve.

  As a result, a slight gap is ensured between the sleeve and the insertion member, sliding wear between the sleeve and the insertion member is extremely small, and oil can be stably supplied to the sliding portion of the compression element over a long period of time. Since it can supply, the effect that reliability can be improved is acquired.

  According to a second aspect of the present invention, the oil seal means according to the first aspect of the present invention is a spiral shape formed in a direction in which the oil rises as the cylindrical cavity portion rotates between the cylindrical cavity portion and the sleeve. This is an oil passage. Oil is viscously dragged to the inner wall of the cylindrical cavity as the cylindrical cavity rotates, so that the oil rotates up the spiral oil passage, and between the cylindrical cavity and the sleeve. In addition to the effect of the invention of claim 1, the reliability can be further improved because the oil can be prevented from leaking from its own weight through the gap.

  According to a third aspect of the present invention, there is provided a spiral oil passage in which the oil lift means according to the first aspect of the present invention is formed in a direction in which the oil rises as the insertion member rotates between the sleeve and the insertion member. Therefore, the amount of oil transported to the sliding portion of the compression element does not depend only on the centrifugal force that decreases at low rotation, and the oil between the sleeve and the insertion member is moved by the rotation of the insertion member. Dragged on the outer surface by viscous force and rotating up the spiral oil passage, the oil transfer amount is sufficiently secured even at low rotation, and the oil can be reliably supplied to the sliding portion of the compression element. Therefore, in addition to the effect of the invention described in claim 1, the reliability can be further improved.

  According to a fourth aspect of the present invention, the rotating means according to the first aspect is engaged and inserted into a receiving portion provided so that a protrusion provided on the outer periphery of the insertion member is constrained with respect to the rotation direction. Therefore, the number of parts can be reduced, and in addition to the effect of the invention described in claim 1, it can be manufactured at a lower cost.

  The invention according to claim 5 is formed by disposing the receiving portion according to claim 4 by arranging a cylindrical member in which a notch is formed in the upper end in the cylindrical cavity portion, and can be easily assembled. In addition to the effect of the invention of claim 4, the assemblability is further improved.

  In the invention described in claim 6, the receiving portion described in claim 4 is a plurality of holes formed in the cylindrical cavity, and the receiving portion can be integrally formed on the shaft. In addition to the effect of the first to third aspects of the invention, the effect of being able to provide an inexpensive compressor is obtained.

  In the seventh aspect of the invention, the receiving portion of the sixth aspect of the invention is covered with a fitting portion of the rotor and the shaft, and the oil supplied to the cylindrical cavity by the oil pump is supplied from a plurality of holes. The effect of the invention according to claim 6 is that the oil leakage from the hole can be reliably prevented by blocking the hole by the fitting portion between the rotor and the shaft. In addition, the reliability can be further improved.

  According to an eighth aspect of the present invention, the protrusion of the insertion portion according to the fourth aspect of the invention is arranged at the peak portion between the grooves of the oil passage, and the protrusion of the insertion member is a spiral groove. Since the protrusion is disposed at the top of the ridge, the protrusion has the effect of suppressing the decrease in the amount of oil transported to the compression element without hindering the flow of oil through the spiral oil passage. In addition to the effects of the invention described in (1), the reliability can be further improved.

  According to a ninth aspect of the present invention, the protrusion of the fourth aspect of the invention is elastically connected to the insertion member, and the protrusion of the insertion member is engaged with the receiving portion of the cylindrical cavity. In addition to the effect of the invention according to claim 4, since the elastic projection has an action that the insertion member can be easily inserted into the cylindrical cavity by inclining to the inside of the cylindrical cavity. can do.

  A tenth aspect of the present invention is the rotation suppression means according to the first to ninth aspects of the present invention, wherein the rotation restraining means is an arm fixed to the stator and restraining and supporting the insertion member in the rotational direction. , The movement of the sleeve in the rotational direction can be suppressed, and since the sleeve does not rotate, it is possible to prevent a decrease in the amount of oil transported up the spiral passage between the sleeve and the insertion member, and the arm is a stator. Therefore, in addition to the effects of the first to ninth aspects, the reliability can be further improved and the assemblability can be improved.

  The invention according to claim 11 drives the electric element of the invention according to claims 1 to 10 at an operation frequency including an operation frequency of at least between 600 and 1200 r / min. Since oil can be stably supplied to the sliding portion of the compression element even at a low rotational speed that can be kept small, in addition to the effects of the inventions of claims 1 to 10, lower power consumption is coupled with the stable supply of oil. As a result, the reliability can be improved even at a low rotational speed.

  The invention according to claim 12 is the one in which the compression element of the invention according to claims 1 to 11 is elastically supported in a sealed container, and the oil pump is integrated with the compression element. Since it is not necessary to attach an oil pump to the hermetic container, in addition to the effects of the first to tenth aspects, the assemblability can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a compressor according to Embodiment 1 of the present invention, and FIGS. 2 to 5 are enlarged views of main parts according to the same embodiment. 4 is a top view of the insertion member shown in FIG. 3, and FIG. 5 is a three-dimensional view of the cylindrical member.

  Hereinafter, the present embodiment will be described with reference to FIGS.

  1 to 3, the sealed container 100 stores oil 101 and is filled with a refrigerant gas 102.

  The compression element 110 includes a block 112 that forms a cylinder 111, a piston 113 that is reciprocally fitted in the cylinder 111, and a shaft that includes a main shaft portion 115 and an eccentric portion 116 that are pivotally supported by a bearing portion 114 of the block 112. 117, and a connecting rod 118 that connects the eccentric portion 116 and the piston 113.

  The electric element 120 includes a stator 121 fixed below the block 112 and connected to an inverter drive circuit (not shown), and a rotor 122 containing a permanent magnet (not shown) and fixed to the main shaft 115. The inverter drive circuit is driven at a plurality of operation frequencies including an operation frequency lower than 1200 r / min, for example.

  An oil pump 130 immersed in the oil 101 is formed at the lower end of the main shaft portion 115 of the shaft 117.

  The spring 125 elastically supports the compression element 110 in which the oil pump 130 is integrated with the hermetic container 100 via the stator 126.

  Next, the configuration of the oil pump 130 will be described in detail.

  The main shaft portion 115 is provided with a cylindrical cavity portion 131 below, and a cylindrical member 133 extending into the oil 101 and having a notch 132 formed at the upper end is inserted.

  The sleeve 136 is supported coaxially with the main shaft portion 115 and has a spiral groove 137 formed on the outer periphery thereof. The sleeve 136 is rotatably disposed in the cylindrical cavity portion 131 and is included in the cylindrical member 133.

  The insertion member 138 has a protrusion 140 formed on the outer periphery of the upper end, and a spiral groove 141 is formed on the outer periphery.

  The projecting portion 140 is disposed at the crest portion 142 between the spiral groove 141 and is locked to the notch 132 that is the receiving portion 144 of the cylindrical member 133, so that the insertion member 138 cannot rotate on the shaft 117. The rotating means 146 is formed so as to rotate together with the shaft 117.

  The spiral oil passage 150 as the oil lifting means 147 is formed by a gap between the sleeve 136 and the insertion member 138, and the spiral oil passage 155 as the oil seal means 153 is formed between the cylindrical member 133 and the sleeve 136. It is formed with a gap.

  The arm 160 serving as the rotation suppression means 158 functions as the rotation suppression means 158 by supporting the sleeve 136 in a non-rotatable manner by engaging with a notch 161 provided below the sleeve 136 at the center.

  About the compressor comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the electric element 120 is energized from the inverter drive circuit, the rotor 122 rotates together with the shaft 117. Accordingly, the eccentric motion of the eccentric portion 116 causes the piston 113 to reciprocate in the cylinder 111 via the connecting rod 118 to perform a predetermined compression operation for compressing the suction gas.

  As the shaft 117 rotates, the insertion member 138 rotates in the sleeve 136, and the oil 101 moves in the spiral oil passage 150 formed between the sleeve 136 and the insertion member 138 as the insertion member 138 rotates. Rotating and rising when dragged viscously.

  The oil that has been rotated up passes through the cylindrical cavity 131 and reaches the sliding portion 165 formed by the main shaft portion 115 and the bearing portion 114 and lubricates it.

  In the present invention, the oil 101 rises up the spiral oil passage 155 by the oil 101 being viscously dragged by the spiral oil passage 155 as the cylindrical member 133 rotates. Therefore, the oil 101 can be prevented from leaking due to its own weight from the gap between the cylindrical member 133 and the sleeve 136.

  The oil does not depend only on the centrifugal force that decreases at a low rotation, and is dragged up by the viscous force to increase the rotation. Therefore, the oil does not leak even at a low rotation, and the oil 101 can be stably supplied to the sliding portion 165.

  Further, since the protrusion 140 of the insertion member 138 is disposed on the peak 142 of the spiral groove 141, the protrusion 140 does not hinder the flow of oil through the spiral oil passage 150, so that the oil to the compression element A decrease in the transport amount can be suppressed.

  Further, the protrusion 140 of the insertion member 138 is locked by the notch 132 so that the shaft 117 cannot rotate. Further, the sleeve 136 is engaged with the central portion of the arm 160, and the cylindrical member 133 and the insertion member 138 are connected to each other. It just floats without rotating between.

  Therefore, the sleeve 136 constantly tries to maintain the same axis as the cylindrical member 133 by the hydraulic pressure generated by the oil interposed between the cylindrical member 133 and the sleeve 136 acting on the entire circumference. Further, the hydraulic pressure generated by the oil interposed between the sleeve 136 and the insertion member 138 works over the entire circumference, so that the insertion member 138 constantly tries to maintain the same axis as the sleeve 136.

  Therefore, since a slight gap is secured between the cylindrical member 133 and the sleeve 136 and between the sleeve 136 and the insertion member 138, little twisting occurs, and the cylindrical member 133, the sleeve 136, and the sleeve 136 are hardly generated. And the insertion member 138 generate very little sliding wear.

  As a result, wear powder is generated and circulates along with the oil 101 to the sliding portion 165 formed by the main shaft portion 115 and the bearing portion 114, and is engaged with the sliding portion 165 to lock the compression element 110. Disappears.

  Therefore, the oil 101 can be reliably supplied to the compression element 110 even at a low rotational speed, and a highly reliable compressor can be realized.

(Embodiment 2)
FIG. 6 is a cross-sectional view of the compressor according to Embodiment 2 of the present invention. FIG. 7 is an enlarged view of a main part in the same embodiment.

  Hereinafter, the present embodiment will be described with reference to FIGS. In addition, about the same structure as Embodiment 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  6 and 7, the configuration of the oil pump 228 will be described in detail.

  The main shaft portion 215 is provided with a cylindrical cavity portion 232 having a plurality of holes 231 as a receiving portion 230 below the main shaft portion 215.

  The sleeve 233 is supported coaxially with the main shaft portion 215, has a spiral groove 235 formed on the outer periphery, and is rotatably disposed in the cylindrical cavity portion 232.

  The insertion member 242 has a protrusion 240 formed on the outer periphery of the upper end, a spiral groove 241 is formed on the outer periphery, and the shaft 217 is locked by locking the protrusion 240 of the insertion member 242 in the hole 231 of the cylindrical cavity 232. In other words, the rotating means 246 is formed so as not to rotate, that is, to rotate together with the shaft 217.

  Further, the cylindrical cavity 232 includes a sleeve 233, and a spiral oil passage 250 that is an oil lifting means 247 is formed in a gap between the sleeve 233 and the insertion member 242.

  In addition, a spiral oil passage 255 that is the oil seal means 253 is formed in the gap between the cylindrical cavity 232 and the sleeve 233.

  Further, the arm 260 which is the rotation suppressing means 258 functions as the rotation suppressing means 258 by supporting the sleeve 233 in a non-rotatable manner by engaging with a notch 265 provided below the sleeve 233 at the center. Yes.

  About the compressor comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the electric element 120 is energized from an inverter drive circuit (not shown), the rotor 122 rotates together with the shaft 217. Accordingly, the eccentric motion of the eccentric portion 216 causes the piston 113 to reciprocate in the cylinder 111 via the connecting rod 118 to perform a predetermined compression operation for compressing the suction gas.

  The main shaft portion 215 rotates with the rotation of the shaft 217, the insertion member 242 rotates in the sleeve 233 that is non-rotatably supported by the arm 260, and the oil 101 is formed between the sleeve 233 and the insertion member 242. As the insertion member 242 rotates in the spiral oil passage 250, it rises in rotation and passes through the cylindrical cavity 232 to the sliding portion 165 formed by the main shaft portion 215 and the bearing portion 214. Reach and lubricate this.

  In the present invention, the oil 101 is spirally dragged with the rotation of the cylindrical cavity 232 by the spiral oil passage 255 provided between the cylindrical cavity 232 and the sleeve 233, so that the oil 101 spirals. Since the oil passage 255 ascends, the oil can be prevented from leaking from the gap between the cylindrical cavity 232 and the sleeve 233 due to its own weight.

  The oil does not depend only on the centrifugal force that decreases at a low rotation, and is dragged up by the viscous force to increase the rotation. Therefore, the oil does not leak even at a low rotation, and the oil 101 can be stably supplied to the sliding portion 165.

  In addition, since the protrusion 240 is elastically connected to the insertion member 242, when the protrusion 240 of the insertion member 242 is engaged with the hole 231 of the cylindrical cavity 232, the protrusion 240 having elasticity is the cylindrical cavity. Since the insertion member 242 can be easily inserted and suspended in the cylindrical cavity portion 232 because it is inclined inward of the portion 232, the assemblability can be improved.

  Further, since the hole 231 of the cylindrical cavity 232 is covered with the rotor 122 and the fitting part 280 of the shaft 117, the hole of the cylindrical cavity is sealed to reliably prevent oil leakage, and stably Oil can be supplied to the sliding portion 165.

  Further, the projection 240 is locked in the hole 231 of the cylindrical cavity 232 at the lower end of the shaft 217, and the insertion member 242 is assembled to the shaft 217 so that it cannot rotate, that is, rotates together with the shaft 217. They are part-engaged and only float without rotating between the cylindrical cavity 232 and the insertion member 242.

  Therefore, the sleeve 233 constantly tries to maintain the same axis as the cylindrical cavity 232 by the hydraulic pressure generated by the oil interposed between the cylindrical cavity 232 and the sleeve 233 acting over the entire circumference. Further, the hydraulic pressure generated by the oil interposed between the sleeve 233 and the insertion member 242 works over the entire circumference, so that the insertion member 242 constantly tries to maintain the same axis as the sleeve 233.

  Therefore, a slight gap is secured between the cylindrical cavity 232 and the sleeve 233, and between the sleeve 233 and the insertion member 242, and almost no twisting occurs. Therefore, the cylindrical cavity 232 and the sleeve 233, and the sleeve 233 and the insertion member The occurrence of sliding wear with 242 is extremely small.

  As a result, abrasion powder is generated and circulates along with the oil 201 to the sliding portion 165 formed by the main shaft portion 215 and the bearing portion 214, and is engaged with the sliding portion 165 to lock the compression element 210. The oil 201 can be reliably supplied to the compression element 210 even at a low rotational speed, and a compressor with high reliability can be realized.

  As described above, the compressor according to the present invention is a highly reliable compressor with an oil pump that can sufficiently convey oil even at a low speed. It can also be applied to applications using refrigeration cycles such as showcases and vending machines.

Sectional drawing of the compressor in Embodiment 1 of this invention The principal part enlarged view of the compressor in the embodiment The principal part enlarged view of the compressor in the embodiment The principal part enlarged view of the compressor in the embodiment The principal part enlarged view of the compressor in the embodiment Sectional drawing of the compressor in Embodiment 2 of this invention The principal part enlarged view of the compressor in the embodiment Cross section of a conventional compressor Enlarged view of the main parts of a conventional compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Airtight container 101 Oil 110 Compression element 117,217 Shaft 120 Electric element 121 Stator 122 Rotor 130,228 Oil pump 131,232 Cylindrical cavity 132 Notch 133 Cylindrical member 136,236 Sleeve 138,242 Insertion member 140,240 Protrusion part 142 Summit portion 144,230 Receiving portion 146,246 Rotating means 147,247 Oil head means 150,155,250,255 Spiral oil passage 153,253 Oil seal means 158,258 Rotation suppressing means 160,260 Arm 231 Hole 280 Fitting part

Claims (12)

  An oil is stored in a sealed container, and a compression element driven by an electric element composed of a stator and a rotor is accommodated. The compression element has a lower end extending vertically into the oil, and a rotating shaft. An oil pump formed at a lower end, the oil pump being supported by a cylindrical cavity formed at the lower end of the shaft, a shaft coaxially supported by the shaft, and rotatably disposed in the cylindrical cavity. Rotation restraining means for restraining rotation and an insertion member arranged coaxially with the shaft and arranged so as to be movable in the radial direction within the sleeve, and an oil head arranged coaxially with the shaft and rotating together with the shaft And an oil seal means is provided between the cylindrical cavity and the sleeve, and the insertion member is rotated together with the shaft. Compressor provided with a rotating means for.   2. The compressor according to claim 1, wherein the oil seal means is a spiral oil passage formed in a direction in which oil rises as the cylindrical cavity rotates between the cylindrical cavity and the sleeve.   2. The compressor according to claim 1, wherein the oil lift means is a spiral oil passage formed between the sleeve and the insertion member so that the oil rises as the insertion member rotates.   The compressor according to claim 1, wherein the rotation means is engaged and fitted into a receiving portion provided so that a protrusion provided on the outer periphery of the insertion member is constrained in the rotation direction.   The compressor according to claim 4, wherein the receiving portion is formed by disposing a cylindrical member having a notch at an upper end in the cylindrical cavity portion.   The compressor according to claim 4, wherein the receiving part is a plurality of holes formed in the cylindrical cavity part.   The compressor according to claim 4, wherein the receiving portion is covered with a fitting portion with the shaft of the rotor.   The compressor according to claim 4, wherein the protrusion of the insertion member is disposed at a peak portion between the grooves of the oil passage.   The compressor according to claim 4, wherein the protrusion is elastically connected to the insertion member.   The compressor according to any one of claims 1 to 9, further comprising an arm fixed to the stator and restraining and supporting the sleeve in the rotation direction.   The compressor according to any one of claims 1 to 10, which is driven at an operation frequency including an operation frequency of at least 600 to 1200 r / min.   The compressor according to any one of claims 1 to 11, wherein the compression element is elastically supported in the sealed container.

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