JP2006283608A - Hermetic compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hermetic compressor capable of materializing reliability of compressor and improvement of efficiency of whole refrigeration cycle by preventing gas mix with downward flow and upward flow in a space between a compression mechanism and an electric motor to reduce oil take out quantity. <P>SOLUTION: A partition member 26 consists of a fixed member 26a which consists of a flange part and a boss part and a cylindrical guide member 26b inserted in the boss part of the fixed member 26a. The guide member 26b can move in an axial direction. An end surface of the partition member 26 is abutted on an end plate in a compression mechanism side of an electric motor stator 3b. Consequently, oil take out quantity is surely reduced even if dimension variation due to compressor assembly is large, cost reduction due to improvement of mass-productivity, reliability of the compressor and improvement of efficiency of whole refrigeration cycle can be simultaneously materialized. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hermetic compressor used in a commercial, household, or vehicle refrigeration air conditioner, a refrigerator, or the like.

  A hermetic compressor used in a refrigeration cycle such as a conventional air conditioner has a configuration shown in FIG. 7, for example. 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.

  The upper end side of the crankshaft 104 is rotatably supported by a main bearing 105 that constitutes a part of the compression mechanism 103. The lower end side of the crankshaft 104 protrudes from the rotor 102b, and the tip end portion extends downward so as to be immersed in the oil stored in the inner bottom portion of the sealed container 101. The crankshaft 104 is provided with an oil passage 104a that sucks and supplies oil in the axial direction. 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 bottom 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 combined with the oil discharged after lubrication, and after reaching the lower part of the rotor 102b through the rotor passage 102c provided in the rotor 102b, the mixed flow of gas and oil is subjected to centrifugal force. As a result, it collides with the lower coil end 102e of the stator 102a and gas-liquid separation occurs. The gas after the 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 passes through an upward gas passage (not shown) provided in the compression mechanism 103. After reaching the upper space 103, the discharge pipe 107 discharges the sealed container 101 to the outside.

  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 insufficient lubrication of the compression mechanism 103, and the compressor itself may be damaged.

In order to solve such a problem, as shown in FIG. 7, in order to separate the downward flow and the upward flow into the space between the compression mechanism 103 and the stator 102a, the partition member 108 and the stator 1 are separated.
The oil take-out amount is reduced by combining the upper coil end 102f of 02a to form a partition wall. Furthermore, 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. (For example, refer to Patent Document 1).
JP 2002-115686 A

  However, in the conventional configuration, since the upper coil end 102e of the stator 102 is used as a part of the partition wall between the downward flow and the upward flow in the space between the compression mechanism 103 and the stator 102, the partition member 108 is used. When there is a gap between the upper coil end 102e and the upper coil end 102e, there is a possibility that the downward flow gas with a high oil ratio and the upward flow gas with a low oil ratio are mixed through the gap to increase the amount of oil taken out. .

  The present invention solves the above-described conventional problems, and the partition member is constituted by a fixing member composed of a flange portion and a boss portion, and a cylindrical guide member inserted into the boss portion of the fixing member. By making the guide member movable in the axial direction, the upper end face of the partition member is assembled to the compression mechanism and the lower end face is brought into close contact with the end face of the stator, so that the gas flows of the lower flow inside and outside the partition member and the upper flow can be mixed. The purpose is to provide a hermetic compressor that can almost completely prevent and reduce the amount of oil taken out of the hermetic container to ensure the reliability of the compressor and improve the efficiency of the entire refrigeration cycle. .

  In order to solve the conventional problems, the hermetic compressor according to the present invention is a cylinder in which a partition member is inserted into a fixing member composed of a flange portion and a boss portion and a boss portion of the fixing member as described in claim 1. The guide member is movable in the axial direction.

  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, only the partition member is used as the partition wall between the downward flow and the upward flow, the total height of the partition member is variable, and the distance between the compression mechanism and the stator end surface is the compressor assembly tolerance. Even if there is variation, the both end surfaces of the partition member can be assembled in close contact with the compression mechanism or the end surface of the stator. Significant reduction is possible.

  In the hermetic compressor of the present invention, the partition member is constituted by a fixing member composed of a flange portion and a boss portion, and a cylindrical guide member inserted into the boss portion of the fixing member, and the guide member is movable in the axial direction. As a result, even when there is a large dimensional variation due to the assembly of the compressor, it is possible to reliably reduce the amount of oil taken out, reduce costs by improving mass productivity, 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 an outward path and a return path for circulating the compressed gas discharged from the compression mechanism within the hermetic container and provided between the compression mechanism and the motor stator. In the hermetic compressor in which the partition between the reciprocating paths is configured by a partition member, the partition member is configured by a fixing member composed of a flange portion and a boss portion and a cylindrical guide member inserted into the boss portion of the fixing member, The guide member is movable in the axial direction. With this configuration, the partition portion functions as a partition wall between a lower flow with a high oil ratio and an upper flow with a low oil ratio. Even if the overall height of the partition member is variable and the distance between the compression mechanism and the stator end surface varies due to compressor assembly tolerances, both end surfaces of the partition member can be assembled in close contact with the compression mechanism or stator end surface. It is possible to almost completely prevent gas mixing in the downward flow and the upward flow, and to significantly reduce the amount of oil taken out.

  Further, since the compressor assembly tolerance can be absorbed by the freedom of the total height of the partition member, it is not necessary to reduce the assembly tolerance particularly in order to obtain the partition effect. Furthermore, it is possible to increase the assembly tolerance, and it is possible to realize an improvement in mass productivity by relaxing the tolerance.

  In particular, the second invention is the hermetic compressor according to the first invention, wherein the guide member is a heat-shrinkable electrical insulator, the guide member is fitted to the boss portion of the fixing member by a clearance fit, and sealed. After positioning and fixing the partition member, the compression mechanism and the electric motor to the container, the guide member is heated and fixed to the fixing member by fixing the guide member to the fixing member. Even when an impact or the like is applied to the machine, the guide member does not move in the axial direction with respect to the fixed member, so that it is possible to stably reduce the amount of oil taken out of the sealed container.

  In addition, since the radial gap between the guide member and the boss portion before the temperature of the guide member is raised can be set large, assembly is easy and high mass productivity can be realized.

  In the compressor assembly process, by raising the temperature of the guide member in the high-temperature drying process after the compressor coating, it is possible to cope without introducing a new temperature increase process for the guide member. Can be suppressed.

  In addition, the guide member is extrapolated to the boss portion of the fixing member so that the inner diameter of the guide member is reduced and the interference fit is fixed when the temperature is raised. If a material that increases the outer diameter of the guide member when the temperature is raised is used. The same effect can be obtained by interpolating the boss portion of the fixing member, or conversely enlarging or reducing the fixing member boss portion.

  According to a third aspect of the invention, in particular, in the hermetic compressor of the first or second aspect, the convex portion provided on the guide member is engaged with the hole provided in the boss portion of the fixing member at a position corresponding to the convex portion. The partition member is configured, and the hole provided in the boss portion of the fixed member is a long hole having a long axis in the axial direction, so that the guide member can be prevented from rotating due to the fluid force of the refrigerant gas. It is possible to prevent a decrease in reliability due to wear of the member or the fixing member, contact of the guide member with the electric motor, or the like.

  In addition, when a resin material is used for the guide member for the purpose of ensuring an insulation distance from the motor, the guide member that is easily elastically deformed is provided with a convex portion, so that the insertion property to the boss portion of the fixed member is improved. Good and secure fixing by press-fitting is also possible.

  In addition, the guide member side end of the elongated hole provided in the boss portion of the fixing member is opened to make a notch shape, so that the insertability is very good, and the radial direction between the guide member and the fixing member boss portion is improved. Since the gap can be greatly reduced, it is possible to reduce the amount of oil taken out by reducing the axial movement after assembling the compressor and at the same time suppressing the gas mixture of the downward flow and the upward flow through the radial gap.

  According to a fourth aspect of the invention, in particular, in the hermetic compressor of the first or second aspect, the convex portion provided on the boss portion of the fixing member is engaged with the hole provided in the guide member at a position corresponding to the convex portion. The partition member is configured, and the hole provided in the guide member is a long hole whose axial direction has a long diameter, thereby preventing the guide member from rotating due to the fluid force of the refrigerant gas, etc., as in the third aspect of the invention. It is possible to prevent deterioration in reliability due to wear of the guide member or the fixing member, contact of the guide member with the electric motor, or the like.

  In addition, when a highly rigid material such as iron is used for the fixing member, the convex portion is difficult to be deformed, so that the convex portion can be prevented from being crushed during assembly or due to the fluid force of the refrigerant gas. It is possible to secure.

  In addition, by opening the fixed member side end of the long hole provided in the guide member and making it notched, the insertability becomes very good, and the radial gap between the guide member and the fixed member boss is greatly increased. Therefore, it is possible to reduce the amount of oil taken out by suppressing the gas mixture of the downward flow and the upward flow through the radial gap as well as reducing the axial movement after assembling the compressor.

  A fifth invention comprises a compression mechanism driven by an electric motor and a sealed container having an oil sump at the bottom and housing the electric motor and the compression mechanism, and the oil stored in the oil sump is supplied to the electric motor and the compression mechanism. Provided with a gas passage composed of an outward path and a return path for circulating the compressed gas discharged from the compression mechanism within the hermetic container and provided between the compression mechanism and the motor stator. In a hermetic compressor in which a partition between reciprocating paths is formed by a partition member, a plurality of cuts are provided at an end opposite to the fixed part of the partition member, and an end of the partition member between adjacent cuts is provided. By making it independently movable in the radial direction, the total height of the partition member becomes variable, and the axial assembly tolerance during the assembly of the compressor can be absorbed. Inhibition at the same time it is possible to realize a reduction oil takeout amounts due, it is not necessary to reduce the assembly tolerances, it is also possible to maintain a high productivity.

  In addition, since the partition member can be composed of one part, it is possible to realize cost reduction by reducing the number of parts, processing, assembly man-hours, and the like.

  In order to increase the variable amount of the total height of the partition member, the partition member needs to be made of a material that is easily elastically deformed. However, when the partition member is composed of one part, it is difficult to fix it to the compression mechanism or the stator. Become. Therefore, it is necessary to select a material that is easily elastically deformed and easily fixed.

  On the other hand, although the said subject can be solved by comprising a partition member by two parts, a fixing member and a guide member, the cost reduction effect by reduction of a number of parts, a process, and an assembly man-hour becomes small.

  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 vertical scroll compressor according to Embodiment 1 of the present invention. In FIG. 1, the entire interior of the iron sealed container 1 is in a high-pressure atmosphere communicating with the discharge pipe 2, an electric motor 3 is disposed at the center, and a scroll-type compression mechanism is disposed at the upper portion, and is fixed to the rotor 3 a of the electric motor 3. A main body frame 5 of a compression mechanism that supports one end of the crankshaft 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 pivotally supported by a sub-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 subjected to centrifugal force. As a result, it collides with the lower coil end 3e of the stator 3b 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 to the upper side of the compression mechanism. After reaching the space, it is discharged from the discharge pipe 2 to the outside of the sealed 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.

  As shown in the perspective view of the partition member shown in FIG. 2, the partition member 26 is composed of a fixing member 26a and a guide member 26b. The fixing member 26a with the guide member 26b fitted into the gap is fixed to the main body frame 5, and the guide member After the compression mechanism is inserted and fixed in the cylindrical outer shell 1a of the hermetic container 1 in which the electric motor stator 3b is shrink-fitted and fixed so that the lower end surface of the stator 26b is in contact with the upper end plate of the stator 3b, the temperature is raised. The guide member 26b is fastened and fixed to the fixing member 26a.

  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.

  In particular, a large coil end gap 27 exists between the winding of the upper coil end 3f of the stator 3 and the upper end plate of the stator 3b, and at the same time, the lower end surface of the partition member 26 and the upper end plate of the stator 3b. If there is a minute gap between them, the oil take-out amount increases briefly.

  Therefore, by arranging the partition member 26 by bringing the end surface of the partition member 26 on the stator 3b side into contact with the end plate of the stator 3b, the oil ratio is maintained regardless of the presence or absence of the coil end gap 27. To suppress the mixing of the high downward flow and the low upward oil flow and minimize the amount of oil taken out of the sealed container 1 to ensure the reliability of the compressor and improve the efficiency of the entire refrigeration cycle Is possible.

  Further, by making it possible to adjust the height of the partition member 26 when the compressor is assembled, variations in the distance between the main body frame 5 and the stator 3b due to the assembly are absorbed, and the lower end surface of the partition member 26 is always attached to the stator 3b. Since it can be in close contact with the upper end plate, it is possible to prevent the partition effect from being lowered due to assembly variations and to suppress the oil take-out amount, and at the same time, it is not necessary to reduce the assembly tolerance, so high mass productivity is achieved. It can also be maintained. Furthermore, the assembly tolerance can be increased, and the cost can be reduced by improving the mass productivity.

  As described above, the partition member 26 includes the fixing member 26a including the flange portion and the boss portion, and the cylindrical guide member 26b inserted into the boss portion of the fixing member 26a, and the guide member 26b is movable in the axial direction. The partition member 26 is disposed by bringing the end face of the guide member 26b on the stator 3b side into contact with the upper end plate of the stator 3b, thereby preventing the mixing of the downward flow and the upward flow almost completely. In addition, it is possible to minimize the amount of oil taken out of the sealed container 1 to ensure the reliability of the compressor and improve the efficiency of the entire refrigeration cycle.

(Embodiment 2)
FIG. 3 is an exploded perspective view of the partition member 26 according to the second embodiment of the present invention. In FIG. 3, the projection 28 provided on the guide member 26b is engaged with a hole provided in the boss portion of the fixing member 26a at a position corresponding to the projection 28 to constitute the partition member 26. By making the hole provided in the boss a long hole 29 having a long axis in the axial direction, the rotation of the guide member 26b due to the fluid force of the refrigerant gas can be prevented, the wear of the guide member 26b or the fixing member 26a It is possible to prevent a decrease in reliability due to contact of the guide member 26b with the electric motor 3 or the like.

  Further, when a resin material is used for the guide member 26b for the purpose of securing an insulation distance from the electric motor 3, the guide member 26b which is easily elastically deformed is provided with the convex portion 28, so that the boss portion of the fixing member 26a On the other hand, it has good insertability and can be securely fixed by press-fitting.

As shown in the exploded perspective view of another partition member in FIG. 4, even if the fixing member 26a is provided with the convex portion 28 and the guide member 26b is provided with the elongated hole 29, the reliability of the guide member 26b is prevented by preventing rotation. In particular, when a material having high rigidity such as iron is used for the fixing member 26a, the convex portion 28 is difficult to be deformed, so that the convex portion 28 is prevented from being crushed during assembly or due to the fluid force of the refrigerant gas. It is possible to ensure high reliability.

(Embodiment 3)
FIG. 5 is a longitudinal sectional view of a vertical scroll compressor according to Embodiment 3 of the present invention, and FIG. 6 is a perspective view of a partition member.

  In FIG. 6, a plurality of cuts 30 are provided at the end of the partition member 26 on the side of the stator 3b, and the end of the partition member between the adjacent cuts 30 is independently movable in the radial direction. As shown in FIG. 5, since the lower end of the partition member 26 falls to the outer peripheral side, the overall height of the partition member 26 is variable. As a result, it is possible to absorb the axial assembly tolerance when assembling the compressor, so it is possible to reduce the oil take-out amount by suppressing gas mixing between the lower flow and the upper flow, and at the same time reduce the assembly tolerance. Therefore, it is possible to maintain high mass productivity.

  Moreover, since the partition member 26 can be comprised by one component, cost reduction by reduction of a number of parts, a process, an assembly man-hour, etc. is realizable.

  As described above, in the hermetic compressor according to the present invention, the partition member is constituted by the fixing member including the flange portion and the boss portion, and the cylindrical guide member inserted into the boss portion of the fixing member, and the guide member. By making it moveable in the axial direction, even if there is a large dimensional variation due to the assembly of the compressor, the oil take-out amount can be reliably reduced, the cost can be reduced by improving the mass productivity, the reliability of the compressor can be secured, and the efficiency of the entire refrigeration cycle It can be realized at the same time, and can be applied to applications such as a heat pump type water heater, a vehicle refrigeration air conditioner and a refrigerator in addition to an air conditioner compressor.

The longitudinal cross-sectional view of the hermetic compressor in Embodiment 1 of this invention Perspective view of partition member of the hermetic compressor The exploded perspective view of the partition member of the hermetic compressor in Embodiment 2 of the present invention An exploded perspective view of another partition member of the hermetic compressor Vertical sectional view of a hermetic compressor according to Embodiment 3 of the present invention Perspective view of partition member of the hermetic compressor Vertical sectional view of a conventional vertical scroll compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airtight container 3 Electric motor 3a Rotor 3b Stator 4 Crankshaft 5 Main body frame 6 Fixed scroll 9 Orbiting scroll 10 Eccentric bearing 11 Compression chamber 14 Eccentric shaft 19 Main bearing 24 Sub bearing 25 Downward gas flow path 26 Partition member 26a Fixed member 26b Guide member 27 Coil end gap 28 Convex 29 Long hole 30 Notch

Claims (5)

The compressor comprises a compression mechanism driven by an electric motor, and an air reservoir having an oil sump at the bottom and housing the electric motor and the compression mechanism. Oil stored in the oil sump is supplied to the electric motor and the compression mechanism. Provided with a gas passage comprising a forward path and a return path, which is provided for lubrication or sealing of the sliding portion and circulates the compressed gas discharged from the compression mechanism inside the sealed container, and is adjacent to the stator of the electric motor. A hermetic compressor in which a partition wall that blocks the forward path and the backward path disposed between the mechanisms is configured by a partition member;
The partition member is composed of a fixing member composed of a flange portion and a boss portion, and a cylindrical guide member inserted into the boss portion of the fixing member, and the guide member is movable in the axial direction. A hermetic compressor characterized by The guide member is a heat-shrinkable electrical insulator, the guide member is fitted to the boss portion of the fixing member by a gap fit, and the partition member, the compression mechanism, and the electric motor are positioned and fixed in the sealed container, and then the guide 2. The hermetic compressor according to claim 1, wherein the guide member is fastened and fixed to the fixing member by raising the temperature of the member. The projection provided on the guide member is engaged with a hole provided in the boss of the fixing member at a position corresponding to the projection to constitute a partition member, and the hole is an elongated hole whose axial direction is the long axis. The hermetic compressor according to claim 1 or 2. A projection member provided on the boss portion of the fixing member is engaged with a hole provided in the guide member at a position corresponding to the projection portion to form a partition member, and the hole is an elongated hole whose axial direction is the long axis. The hermetic compressor according to claim 1 or 2. The compressor comprises a compression mechanism driven by an electric motor, and an air reservoir having an oil sump at the bottom and housing the electric motor and the compression mechanism. Oil stored in the oil sump is supplied to the electric motor and the compression mechanism. Provided with a gas passage comprising a forward path and a return path, which is provided for lubrication or sealing of the sliding portion and circulates the compressed gas discharged from the compression mechanism inside the sealed container, and is adjacent to the stator of the electric motor. A hermetic compressor in which a partition wall that blocks the forward path and the backward path disposed between the mechanisms is configured by a partition member;
A plurality of cuts are provided in the axial direction at the end opposite to the fixed part of the partition member, and the end of the partition member between the adjacent cuts is independently movable in the radial direction. A hermetic compressor characterized by