JP2006214399A - Hermetic compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hermetic compressor capable of reducing oil take-out amount by preventing mixing of gas of a lower flow and an upper flow in a space between a compressing mechanism and a motor, securing reliability on the compressor, and capable of improving efficiency of the whole refrigeration cycle. <P>SOLUTION: At least either of axial end surfaces of a partitioning member 26 is made to come close to both of the end plate of a compressing mechanism side of a motor stator 3b and the compressing mechanism or one of them to reduce mixing possibility of the gas of the lower flow having a high oil ratio with the gas of the upper flow having a low oil ratio, thus minimizing the oil take-out amount from a sealed container 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hermetic compressor for use in a refrigeration air conditioner, a refrigerator, or the like for business use, home use, or vehicle use.

  A hermetic compressor used in a refrigeration cycle such as a conventional air conditioner has a configuration shown in, for example, the cross-sectional view of FIG.

  An electric motor 102 and a compression mechanism 103 are built inside a cylindrical sealed container 101 whose both ends are closed. The electric motor 102 includes a stator 102a fixed to the inner wall surface of the hermetic container 101, and a rotor 102b rotatably supported inside the stator 102a. A crankshaft 104 passes through the rotor 102b. Bound to state. One end of the crankshaft 104 is rotatably supported by a main bearing 105 constituting a part of the compression mechanism 103. The other end side of the crankshaft 104 protrudes from the rotor 102 b, and the tip end portion extends downward so as to be immersed in the oil accommodated in the sealed container 101. Further, the crankshaft 104 is provided with an oil passage 104a that sucks and supplies oil in the axial direction, and after the oil is supplied to each sliding portion such as the main bearing 105 through the oil passage 104a. The gas is compressed by the compression mechanism 103, separated into gas and liquid at the lower part of the sealed container 101, and recirculated to the lower oil reservoir.

  The gas compressed by the compression mechanism 103 passes through a downward gas flow path 106 provided in the vicinity of the outer periphery of the compression mechanism 103 and is guided to the upper portion of the rotor 102b as shown by the dotted arrow in the figure. Here, the main bearing 105 and the like are joined with the oil discharged after lubrication, and after reaching the lower part of the rotor 102b via the rotor passage 102c provided in the rotor 102b, the mixed flow of gas and oil is subjected to centrifugal force. Collides with the lower coil end of the stator 102a and gas-liquid separation occurs. The gas after gas-liquid separation is guided to the upper part of the electric motor 102 through a stator passage 102d provided on the outer periphery of the stator 102a, and compressed through an upward gas passage (not shown) provided in the compression mechanism 103. After reaching the upper space of the mechanism 103, it is discharged from the discharge pipe 107 to the outside of the sealed container 101.

  In the refrigerant gas and oil flow described above, the oil ratio is obtained by mixing the oil mist discharged from the main bearing 105 and the gas compressed by the compression mechanism 103 in the space between the compression mechanism 103 and the stator 102a. There are two flows: a gas in which the gas is high and flowing downward toward the lower part of the sealed container 101; and a gas that is gas-liquid separated in the lower part of the rotor 102b and the gas that has a low oil ratio flows toward the discharge pipe 107.

  When gases having different oil ratios are mixed in the space between the compression mechanism 103 and the stator 102a, the oil ratio contained in the gas flowing upward increases, and the oil taken out of the sealed container 101 increases. Therefore, oil adheres to the inner wall surface of the pipe of the refrigeration cycle, and as a result, disadvantageous phenomena such as a reduction in efficiency of the refrigeration cycle and clogging of the pipe occur. In addition, when the oil take-out amount is extremely increased, the oil stored in the lower portion of the hermetic container 101 is reduced and the oil cannot be supplied to the compression mechanism 103, which may cause a reduction in efficiency of the compression mechanism 103. In the worst case, galling or seizure may occur due to non-lubrication of the compression mechanism 103, and the compressor itself may be damaged.

Therefore, in a conventional hermetic compressor, a technique for disposing a partition member in a gas passage of a discharge gas atmosphere in a hermetic container so that a sufficiently separated oil gas can be discharged is disclosed. (For example, refer to Patent Document 1).

In Patent Document 1, in order to separate the downward flow and the upward flow in the space between the compression mechanism 103 and the stator 102a, the partition member 108 and the upper coil end 102e of the stator 102a are combined to form a partition wall. Thus, the oil take-out amount is reduced by separating the lower gas flow and the upper gas flow. Further, in order to prevent deformation and vibration of the partition member 108 due to collision of high-temperature and high-pressure gas, as a countermeasure, PET, PEEK, PBT, PPS, polyimide, PTFE, cellulosic material, etc. are used as the material of the partition member 108. Adopted.
JP 2002-115686 A

  However, in the conventional configuration, since the upper coil end of the stator is used as a part of the partition between the downward flow and the upward flow in the space between the compression mechanism and the stator, there is a gap in the upper coil end. In this case, there is a possibility that the downward flow gas having a high oil ratio and the upward flow gas having a low oil ratio are mixed through the gap, resulting in an increase in the amount of oil taken out.

  The present invention solves the above-described conventional problems, and the axial end faces of the partition member or any of the end faces of the end plate on the compression mechanism side of the motor stator and / or the compression mechanism are provided. By making them close to each other, the mixing of the downward flow and the upward flow is suppressed, and the amount of oil taken out to the outside of the sealed container is minimized, ensuring the reliability of the compressor and improving the efficiency of the entire refrigeration cycle. An object is to provide a compressor.

  In order to solve the conventional problem, the hermetic compressor according to the present invention is, as described in claim 1, a partition for the end plate on the compression mechanism side of the motor stator and / or the compression mechanism. Both end surfaces in the axial direction of the member or any one of the end surfaces are close to each other.

  In the conventional configuration, if there is a gap in the upper coil end of the stator, the gas flowing downward with a high oil ratio and the gas flowing upward with a low oil ratio may be mixed through the gap, leading to an increase in the amount of oil taken out. However, according to this configuration, the partition member is disposed by bringing the end face of the partition member close to the end plate on the compression mechanism side of the motor stator and / or the compression mechanism. Mixing with the upward flow can be suppressed, and the amount of oil taken out to the outside of the sealed container can be minimized.

  The hermetic compressor according to the present invention is configured so that the axial end faces or either end face of the partition member are brought close to the end plate on the compression mechanism side of the motor stator and / or the compression mechanism. It is possible to reduce the amount taken out and to ensure the reliability of the compressor and improve the efficiency of the entire refrigeration cycle.

1st invention consists of the compression mechanism driven with an electric motor, and the airtight container which has an oil reservoir in a bottom part and accommodates an electric motor and a compression mechanism, and the oil stored in the oil reservoir is supplied to an electric motor and a compression mechanism. Provided with a gas passage composed of a forward path and a return path for circulating compressed gas discharged from the compression mechanism inside the sealed container, and a part of the partition wall that partitions the forward path and the return path is formed by the stator of the motor. In a hermetic compressor, in which a partition between reciprocating paths arranged between and adjacent to a motor stator is formed by a partition member, an end plate and a compression mechanism of the motor stator on the compression mechanism side Both or both of the end surfaces in the axial direction of the partition member or one of the end surfaces thereof are close to each other. The mixing of the low flow gas with a high oil ratio and the low flow gas with a low oil ratio is suppressed, and the amount of oil taken out to the outside of the sealed container is minimized to ensure the reliability of the compressor and the efficiency of the entire refrigeration cycle An improvement can be realized.

  In order to dispose the partition member between the electric motor stator and the compression mechanism, one part is to fix the partition member to the compression mechanism to create a gap between the compression mechanism side end surface of the partition member and the compression mechanism. First, there is a method of bringing the end surface of the partition member on the side of the motor stator close to the end plate on the side of the compression mechanism of the motor stator.

  In addition, by fixing the partition member to the motor stator, a gap between the motor stator side end surface of the partition member and the end plate on the compression mechanism side of the motor stator is not created, and the end surface of the partition member on the compression mechanism side And a compression mechanism.

  Furthermore, there is another method in which the partition member is fixed to the sealed container, and both end faces of the partition member are brought close to the compression mechanism and the end plate on the compression mechanism side of the motor stator.

  In particular, the second aspect of the invention is the hermetic compressor of the first aspect of the invention, in which both or both of the axial end faces of the partition member and the end faces on the compression mechanism side of the motor stator and / or the compression mechanism are both. When the gap with either one is 1/10 or less of the outer diameter of the motor stator, there is a gap between the bundle of copper wires at the coil end of the motor stator and the end plate of the stator laminated iron plate In addition, since the gap can be partitioned by the partition member, it is possible to further suppress the mixing of the gas in the downward flow and the upward flow, and to further reduce the amount of oil taken out to the outside of the sealed container.

  When the winding type of the motor stator is a concentrated winding, the effect is greater because the gap between the coil end and the stator end plate is large.

  In the third invention, in particular, in the hermetic compressor of the first or second invention, the partition member is fixed to the compression mechanism, whereby the gap between the coil end of the motor stator and the stator end plate is small. In this case, it is possible to suppress mixing of the downward flow and the upward flow at the same time while ensuring a sufficient distance between the stator side end face of the partition member and the stator end plate including the tolerance of parts and assembly. Further, it is possible to provide a low-cost hermetic compressor that has a small oil take-out amount and high mass productivity.

  In the fourth aspect of the invention, in particular, in the hermetic compressor of the first or second aspect of the invention, the partition member is fixed to the electric motor stator so that the gap between the coil end of the electric motor stator and the stator end plate is reduced. When it is large, the gap can be almost completely eliminated by the partition member fixed to the stator, and the mixing of the downward flow and the upward flow through the gap at the coil end can be minimized.

  According to a fifth aspect of the invention, in particular, in the hermetic compressor according to the first or second aspect of the invention, the partition member has a double structure, one is fixed to the compression mechanism, and the other is fixed to the motor stator. By providing a sufficient distance between the both end faces of the compressor and the compression mechanism and stator end plate, it is possible to set large tolerances for parts and assembly, improving mass productivity and at the same time fixing the compression mechanism to the compression mechanism. Since there is no gap in the axial direction that allows the downward flow and the upward flow to communicate with each other in the space between the child, the amount of oil taken out can be further suppressed.

In a sixth aspect of the invention, in particular, in the hermetic compressor according to any one of the first to fifth aspects, the inner shape of the stator coil end is reduced by making the end shape when the partition member is expanded into a tooth shape. When the inner diameter of the stator coil end near the stator end plate is smaller than the outer diameter of the partition member. Since the axial concave portion serves as a relief for the stator coil end and the tooth-shaped axial convex portion can be brought close to the stator end plate to suppress mixing of the downward flow and the upward flow, the partition member or the stator coil The oil take-out amount can be suppressed without greatly changing the shape of the end.

  Since the stator coil end often approaches the axial center most at the position of the stator slot, it is desirable to match the number and position of the axial recesses of the partition member with the number and position of the stator slot.

  In a seventh aspect of the invention, in particular, in the hermetic compressor according to any one of the first to sixth aspects, the partition member is changed by changing the distance of the partition member from the central axis of the compression mechanism over the entire circumference of the partition member. Since it can be provided following the shape of the stator coil end, the radial gap between the partition member and the stator coil end can be reduced, and not only the axial gap seal but also the radial gap seal It is possible to suppress the mixing of the downward flow and the upward flow.

  In addition, since the shape of the stator coil end in the radial direction changes periodically according to the number of stator slots, it is desirable to change the shape of the partition member in the same cycle.

  In an eighth aspect of the present invention, in particular, in the hermetic compressor according to any one of the first to seventh aspects, the partition member is disposed on the outer periphery of the compression mechanism side coil end of the electric motor stator, whereby the stator coil end is arranged. Even when the innermost diameter of the stator is almost equal to the outer diameter of the rotor and it is difficult to form the partition member on the inner peripheral side of the stator coil end, the gap between the stator coil ends can be sealed.

  In addition, there is a stator coil end in the space of the lower flow between the compression mechanism and the electric motor stator, and a dead water region can be formed with respect to the gas flow line leading to the gas passage inside the rotor. Oil droplets due to the oil centrifugal separation action of gas containing a large amount of oil mist can be accumulated near the coil end, and only the oil can be discharged separately, so that the amount of oil taken out can be further reduced.

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

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a hermetic compressor according to Embodiment 1 of the present invention.

  In FIG. 1, the entire inside of the iron sealed container 1 is a high-pressure atmosphere that communicates with the discharge pipe 2, a motor 3 at the center, a compression mechanism at the top, and a crankshaft fixed to the rotor 3 a of the motor 3. A main body frame 5 of a compression mechanism that supports one end of 4 is fixed to the sealed container 1, and a fixed scroll 6 is attached to the main body frame 5.

  The oil passage 7 in the main shaft direction provided in the crankshaft 4 has one end communicating with the oil supply pump device 8 and the other end finally communicating with the eccentric bearing 10 of the orbiting scroll 9. The orbiting scroll 9 that meshes with the fixed scroll 6 to form the compression chamber 11 includes a spiral orbiting scroll wrap 9a and a wrap support disc 9b in which an eccentric bearing 10 is erected. The fixed scroll 6 and the main body frame 5 It is arranged between.

  The fixed scroll 6 includes an end plate 6a and a spiral fixed scroll wrap 6b. A discharge port 12 is disposed at the center of the fixed scroll wrap 6b, and a suction chamber 13 is disposed at the outer periphery.

  An eccentric shaft 14 that is eccentric from the main shaft of the crankshaft 4 and is disposed at the upper end of the crankshaft 4 is configured to engage and slide with the eccentric bearing 10 of the orbiting scroll 9. Between the lap support disk 9b of the orbiting scroll 9 and the thrust bearing 15 provided on the main body frame 5, a minute gap capable of forming an oil film is provided. An annular seal member 16 that is substantially concentric with the eccentric bearing 10 is mounted on the lap support disk 9b in a loose state. The annular seal member 16 partitions the back chamber 17 inside and the back pressure chamber 18 outside. ing.

  The oil sucked up by the oil supply pump device 8 passes through the oil passage 7 of the crankshaft 4 and is guided to the axial internal space 20 formed between the eccentric bearing 10 and the eccentric shaft 14 of the orbiting scroll 9, and one of them is the orbit. The scroll 9 is fixedly scrolled through a throttle portion 21 provided on the back surface of the lap support disk 9b of the scroll 9 to a back pressure chamber 18 formed by being surrounded by the fixed scroll 6 and the main body frame 5. The oil is guided to the suction chamber 13 through the back pressure adjusting valve 22 having the function of pressing against the wrap 6b and the oil supply passage 22a. The other passes through the eccentric bearing 10, the back chamber 17, and the main bearing 19 and is discharged to the outside of the compression mechanism.

  A check valve device 23 that opens and closes the outlet side of the discharge port 12 is mounted on the plane of the end plate 6a of the fixed scroll 6, and the check valve device 23 includes a reed valve 23a made of a thin steel plate and a valve presser 23b. Become.

  The lower end of the crankshaft 4 is supported by a secondary bearing 24 fixed by welding or shrink fitting in the sealed container 1 and can rotate stably. The auxiliary bearing 24 has a journal bearing configuration, and a part of the oil sucked up by the oil supply pump device 8 is supplied to the auxiliary bearing 24.

  The gas compressed by the compression mechanism passes through a downward gas flow path 25 provided in the vicinity of the outer periphery of the compression mechanism, and is guided to the upper portion of the rotor 3a as shown by a dotted arrow. Here, the main bearing 19 and the like are joined with the oil discharged after lubrication, and after reaching the lower part of the rotor 3a through the rotor passage 3c provided in the rotor 3a, the mixed flow of gas and oil is centrifuged. It collides with the lower coil end of the stator 3b by force, and gas-liquid separation occurs. The gas after the gas-liquid separation is guided to the upper part of the electric motor 3 through a stator passage 3d provided on the outer periphery of the stator 3b, and passes through an upward gas passage (not shown) provided in the compression mechanism. After reaching the upper space, the liquid is discharged from the discharge pipe 2 to the outside of the closed container 1.

  In the space between the compression mechanism and the electric motor 3, the above-described downward flow gas having a high oil ratio and the upward flow gas having a low oil ratio coexist, and these gas flows are separated by the partition member 26. FIG. 2 is a perspective view of the partition member. The partition member 26 is fixed to the main body frame 5, and the other end is close to the laminated iron plate end plate of the stator 3b. Moreover, the axial direction recessed part 26a which makes the partition member 26 escape as a tooth shape shape is provided so that the slot part vicinity of the upper coil end 3e of the stator 3b may not contact.

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

In the space between the compression mechanism and the stator 3b, when gases with different internal and external oil ratios separated by the partition member 26 are mixed, the oil ratio contained in the gas flowing upward increases, and the sealed container 1 Since the oil taken out to the outside increases, the oil adheres to the inner wall surface of the pipe of the refrigeration cycle, and as a result, inconvenient phenomena such as a reduction in efficiency of the refrigeration cycle and clogging of the pipe occur. In addition, when the oil take-out amount is extremely increased, the oil stored in the lower portion of the sealed container 1 is reduced and the oil cannot be supplied to the compression mechanism, which may cause a reduction in efficiency of the compression mechanism. In the worst case, galling or seizure may occur due to the non-lubrication of the compression mechanism, which may damage the compressor itself.

  Therefore, the upper coil end 3e of the stator 3b and the stator 3b end plate are arranged by arranging the partition member 26 with the end face of the partition member 26 on the stator 3b side close to the end plate of the stator 3b. The mixing of the downward flow and the upward flow via the coil end gap 27 between the two is suppressed, the amount of oil taken out to the outside of the sealed container 1 is minimized, and the reliability of the compressor is ensured and the efficiency of the entire refrigeration cycle is improved. Can be realized.

  Further, the inner diameter of the upper coil end 3e increases from the end plate of the stator 3b toward the compression mechanism, and the inner diameter of the upper coil end 3e near the end plate of the stator 3b is the outer diameter of the partition member 26. The lower end of the partition member 26 has a tooth shape, and the axial recess 26a serves as a relief for the upper coil end 3e, and at the same time the axial protrusion 26b approaches the end plate of the stator 3b and flows downward and upward. Therefore, the oil take-out amount can be suppressed without greatly changing the shape of the partition member 26 or the upper coil end 3e. Therefore, the amount of oil taken out can be suppressed by a minimum design change, and the development man-hours, material costs, mold costs, etc. can be minimized.

  The height of the coil end gap 27 between the upper coil end 3e of the stator 3b and the stator 3b end plate is often approximately 1/10 or less of the outer diameter of the stator 3b. By setting the distance between the end face on the stator 3b side and the end plate of the stator 3b to be 1/10 or less of the outer diameter of the stator 3b, the effect of suppressing the oil take-out amount is greater.

  Further, in the present embodiment, the partition member 26 is fixed to the main body frame 5, but the same effect can be obtained even if it is fixed to the stator 3 b or fixed to the sealed container 1.

  As described above, by arranging the partition member 26 with the end face on the stator 3b side of the partition member 26 close to the end plate of the stator 3b, the downward flow and the upward flow through the coil end gap 27 are arranged. As a result, the reliability of the compressor can be ensured and the efficiency of the entire refrigeration cycle can be improved.

(Embodiment 2)
FIG. 3 is a perspective view of a partition member of the hermetic compressor according to the second embodiment of the present invention. In FIG. 3, a radial recess 26 c is provided instead of the axial recess 26 a in FIG. 2, thereby fulfilling the escape function for the upper coil end 3 e.

  With such a configuration, the partition member 26 is provided following the shape of the upper coil end 3e of the stator 3b, and the distance between the end of the partition member 26 on the stator 3b side and the end plate of the stator 3b is extended over the entire circumference. At the same time, the radial gap between the partition member 26 and the upper coil end 3e can be reduced, so that not only the axial gap seal but also the radial gap seal ensures that the lower and upper flows are mixed. Can be suppressed.

(Embodiment 3)
FIG. 4 is a longitudinal sectional view of a hermetic compressor according to Embodiment 3 of the present invention.

  In FIG. 4, the shaft in which the downward flow and the upward flow are communicated with each other by a double-structured partition wall composed of a first partition member 28 fixed to the main body frame 5 and a second partition member 29 fixed to the stator 3 b. The gap in the direction can be almost eliminated, and the amount of oil taken out can be minimized by eliminating gas mixing through the coil end gap 27 of the stator 3b.

  In addition, there is a concern about gas mixing through a radial gap between the outer periphery of the first partition member 28 and the inner periphery of the second partition member 29 in the overlapping portion of the first partition member 28 and the second partition member 29. However, gas mixing through the radial gap can be eliminated by setting the radial gap small or ensuring a large axial length of the overlapping portion.

(Embodiment 4)
FIG. 5 is a longitudinal sectional view of a hermetic compressor according to the fourth embodiment of the present invention.

  In FIG. 5, the first partition member 28 is fixed to the main body frame 5, and the second partition member 29 is disposed on the outer periphery of the upper coil end 3 e of the stator 3 b, so that the innermost inner diameter of the upper coil end 3 e is obtained. Is substantially equal to the outer diameter of the rotor, and the coil end gap 27 of the upper coil end 3e can be sealed even when it is difficult to form the second partition member 29 on the inner peripheral side of the upper coil end 3e. In addition, the amount of oil taken out can be reduced, and at the same time, the development man-hours and production costs due to the design change of the stator 3b and the efficiency reduction of the electric motor 3 can be suppressed.

  In addition, the upper coil end 3e is located in the downward flow space between the compression mechanism and the stator 3b, and a dead water region can be formed with respect to the gas flow line leading to the rotor passage 3c. The oil droplets by the oil centrifugal separation action of the gas containing a large amount of gas can be accumulated in the vicinity of the upper coil end 3e, and only the oil can be discharged separately, so that the amount of oil taken out can be further reduced.

  In the present embodiment, the partition wall of the downward flow and the upward flow is constituted by the double structure of the first partition member 28 and the second partition member 29. However, the compression mechanism side end surface of the second partition member 29 and the main body By making the distance from the frame 5 close, even a single structure having only the second partition member 29 can be used as a partition wall for downward flow and upward flow.

  As described above, the hermetic compressor according to the present invention includes both end surfaces in the axial direction of the partition member and / or one of the end surfaces with respect to the end plate on the compression mechanism side and / or the compression mechanism of the motor stator. The amount of oil taken out can be reduced by bringing the compressors close to each other, ensuring the reliability of the compressor and improving the efficiency of the entire refrigeration cycle. In addition to the compressor for the air conditioner, the heat pump water heater and the refrigeration air conditioner for vehicles It can also be applied to uses such as refrigerators.

The longitudinal cross-sectional view of the hermetic compressor in Embodiment 1 of this invention The perspective view of the partition member of the hermetic compressor in Embodiment 1 of the present invention The perspective view of the partition member of the hermetic compressor in Embodiment 2 of the present invention Vertical sectional view of a hermetic compressor according to Embodiment 3 of the present invention Vertical sectional view of a hermetic compressor according to Embodiment 4 of the present invention Vertical section of a conventional hermetic compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airtight container 3 Electric motor 3b Stator 5 Main body frame 6 Fixed scroll 8 Refueling pump apparatus 9 Orbiting scroll 11 Compression chamber 25 Downward gas flow path 26 Partition member 26a Axial recessed part 26b Axial convex part 26c Radial recessed part 28 First partition Element

Claims (8)

It comprises a compression mechanism driven by an electric motor and an air reservoir having an oil reservoir at the bottom and accommodating the electric motor and the compression mechanism, and the oil stored in the oil reservoir is supplied to the electric motor and the compression mechanism for lubrication. Or a gas passage comprising a forward path and a return path that is provided in a seal and circulates the compressed gas discharged from the compression mechanism inside the hermetic container, and a part of a partition partitioning the forward path and the return path is part of the electric motor A hermetic compressor in which a partition between reciprocating paths disposed between the stator and the electric motor stator is formed by a partition member,
The sealing member characterized in that both end surfaces in the axial direction of the partition member or any one end surface thereof are brought close to both or one of the end plate on the compression mechanism side of the electric motor stator and the compression mechanism. Mold compressor. The clearance between the axial end faces of the partition member or any one of the end faces and the end plate on the compression mechanism side of the motor stator and / or the compression mechanism is 1/10 or less of the outer diameter of the motor stator. The hermetic compressor according to claim 1. The hermetic compressor according to claim 1 or 2, wherein the partition member is fixed to the compression mechanism. 3. The hermetic compressor according to claim 1, wherein the partition member is fixed to the electric motor stator. 3. The hermetic compressor according to claim 1, wherein the partition member has a double structure, one is fixed to the compression mechanism and the other is fixed to the electric motor stator. The hermetic compressor according to any one of claims 1 to 5, wherein an end shape when the partition member is expanded is a tooth shape. The hermetic compressor according to any one of claims 1 to 6, wherein the distance of the partition member from the central axis of the compression mechanism is changed over the entire circumference of the partition member. The hermetic compressor according to any one of claims 1 to 7, wherein the partition member is disposed on an outer periphery of the compression mechanism side coil end of the electric motor stator.

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