JP2019138269A - Hermetic type compressor and refrigeration device - Google Patents

Abstract

To provide a hermetic type compressor which has improved efficiency and reliability by reducing slide loss, while suppressing cost.SOLUTION: In a hermetic type compressor, a compression element 103 includes: a crank shaft 110 including a main shaft part 115, an eccentric shaft 114 and an auxiliary shaft part 116; a main bearing 119 formed at a cylinder block and pivotally supporting the main shaft part; and an auxiliary bearing 133 for pivotally supporting the auxiliary shaft part. An electric element 102 includes a stator 129 arranged inside a rotor at a part lower than the rotor 128. The stator is fixed to a stator fixing member 130 arranged on the auxiliary shaft part side of the crank shaft, the stator fixing member is fixed to the cylinder block, and the auxiliary bearing is fixed to the stator fixing member. A viscous pump is provided at a lower part of the crank shaft. The viscous pump includes: a cylindrical cavity part 134 formed at a lower part in the axial direction of the crank shaft; and a pump body 135 inserted in the cylindrical cavity part coaxially. The pump body is fixed to the auxiliary bearing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hermetic compressor used for a refrigerator, an air conditioner, and the like, and a refrigeration apparatus equipped with the same.

  Conventionally, some hermetic compressors of this type include a main bearing above the motor part and a sub-bearing below the motor part, and a crankshaft is pivotally supported above and below the motor part. (For example, refer to Patent Document 1).

  Some have an oil pump at the lower part of the crankshaft. (For example, refer to Patent Document 2).

  A conventional hermetic compressor described in Patent Document 1 will be described.

  FIG. 4 is a longitudinal sectional view of a conventional hermetic compressor described in Patent Document 1. In FIG.

  In FIG. 4, a compression mechanism portion 2 that is accommodated above the hermetic container 1 and compresses the refrigerant gas is provided, and an electric motor portion 3 is provided below the compression mechanism portion 2. The compression mechanism unit 2 includes a crankshaft 4 that transmits the rotation of the electric motor unit 3 to the compression mechanism unit 2. The upper portion of the crankshaft 4 is pivotally supported by a main bearing 6 provided on a main frame 5 constituting the compression mechanism portion 2. The lower portion of the crankshaft 4 is pivotally supported by the auxiliary bearing 7.

  The auxiliary bearing 7 is attached to the bearing support 8. The bearing support 8 is attached to the lower surface portion of the stator 3 a of the electric motor unit 3. The auxiliary bearing 7 has a self-aligning function.

  Next, a conventional hermetic compressor described in Patent Document 2 will be described.

  FIG. 5 is a longitudinal sectional view of a conventional hermetic compressor described in Patent Document 2. As shown in FIG.

  In FIG. 5, a tubular sleeve 9 is fixed to the crankshaft 4, and a pump body 10 is disposed inside the tubular sleeve 9. The pump body 10 is fixed to a fixed rod 11, and the fixed rod 11 is fixed to the stator 3a.

Japanese Patent No. 3193599 Japanese Patent No. 5538405

  However, in the conventional configuration described in Patent Document 1, the bearing support 8 is attached to the lower surface portion of the stator 3a. Since the stator 3a is usually configured by stacking laminated steel plates and the parallelism of the upper and lower surfaces is poor, the bearing support 8 may be attached at an angle. Therefore, an automatic alignment function as in the above configuration is required, and the configuration becomes complicated, resulting in an increase in cost. Moreover, in the conventional structure of patent document 2, the pump main body 10 is fixed to the stator 3a with the fixed rod 11, and the viscous pump is comprised. In order to configure the fixed rod 11 so that it does not come into contact with the crankshaft 4 and the rotor 3b and does not come off from the stator 3a, the shape of the fixed rod 11 becomes complicated, and there is a problem that the cost increases. Was.

  The present invention solves the above-described conventional problems. In the present invention, the crankshaft is prevented from being twisted by accurately assembling the coaxiality of the main bearing and the auxiliary bearing, and the cost can be reduced by configuring the viscous pump by a simple fixing method. Therefore, an object of the present invention is to provide a low-cost, high-efficiency, high-reliability hermetic compressor by reducing loss and improving reliability of a bearing and a viscous pump.

  In order to solve the above-described conventional problems, a hermetic compressor according to the present invention houses an electric element and a compression element driven by the electric element in a hermetic container, and the compression element includes a main shaft portion. A crankshaft having an eccentric shaft and a countershaft portion provided below the main shaft portion, a cylinder block having a cylindrical cylinder bore, a piston reciprocating in the cylinder bore, the piston and the eccentric shaft, Connecting rods, a main bearing formed on the cylinder block and receiving a radial load acting on the main shaft portion to support the main shaft portion, and a radial load acting on the sub shaft portion And the electric element includes a rotor fixed to the main shaft portion side of the crankshaft and a front portion below the rotor. An outer rotor type motor having a stator disposed on the inner side of the rotor, wherein the stator is fixed to a stator fixing member disposed on the countershaft side of the crankshaft, and the stator fixing member is the cylinder block The auxiliary bearing is fixed to the stator fixing member, and has a viscous pump at a lower portion of the crankshaft, and the viscous pump has a cylindrical cavity formed at an axial lower portion of the crankshaft, A pump body coaxially inserted into the cylindrical cavity, and the pump body is fixed to the auxiliary bearing.

  As a result, the stator fixing member can be fixed to the cylinder block whose accuracy is ensured by processing, so that parallelism can be ensured. Therefore, the parallelism between the axis of the auxiliary bearing fixed to the stator fixing member and the axis of the main bearing formed on the cylinder block can be ensured. Thereby, the coaxial alignment of the main bearing and the auxiliary bearing can be ensured by aligning the axes with a jig or the like. Therefore, it is possible to assemble with high accuracy without using a self-aligning function having a complicated configuration, and it has an effect of reducing the loss of the bearing and ensuring the reliability while suppressing the cost.

  Further, the pump body is fixed to a sub bearing arranged in the vicinity. For this reason, since a structure can be simplified, cost can be held down.

  The hermetic compressor according to the present invention reduces bearing loss and secures reliability while suppressing the cost of parts and processing. Thereby, the efficiency and reliability of the hermetic compressor can be improved without increasing the cost.

1 is a longitudinal sectional view of a hermetic compressor according to Embodiment 1 of the present invention. 1 is a longitudinal sectional view of a part of a hermetic compressor according to Embodiment 1 of the present invention. The schematic diagram which shows the structure of the freezing apparatus which concerns on Embodiment 2 of this invention. Vertical section of a conventional hermetic compressor Vertical section of another conventional hermetic compressor

  A hermetic compressor according to a first aspect of the present invention houses an electric element and a compression element driven by the electric element in a hermetic container, and the compression element includes a main shaft portion, an eccentric shaft, and the main shaft portion. A crankshaft having a countershaft portion provided in a lower portion, a cylinder block having a cylindrical cylinder bore, a piston reciprocating in the cylinder bore, a connecting rod connecting the piston and the eccentric shaft, and the cylinder A main bearing that is formed in a block and that receives a radial load acting on the main shaft portion and pivotally supports the main shaft portion; and a radial bearing that acts on the sub shaft portion and receives the radial load acting on the sub shaft portion. An auxiliary bearing that supports the shaft, and the electric element includes a rotor fixed to the main shaft portion side of the crankshaft, and a spring disposed below the rotor and inside the rotor. And the stator is fixed to a stator fixing member disposed on the auxiliary shaft portion side of the crankshaft, the stator fixing member is fixed to the cylinder block, The bearing is fixed to the stator fixing member, and has a viscous pump at a lower portion of the crankshaft. The viscous pump is coaxial with the cylindrical cavity portion formed at a lower portion in the axial direction of the crankshaft. And the pump body is fixed to the auxiliary bearing.

  As a result, the stator fixing member can be fixed to the cylinder block whose accuracy is ensured by processing, so that parallelism can be ensured. Therefore, the parallelism between the axis of the auxiliary bearing fixed to the stator fixing member and the axis of the main bearing formed in the block can be ensured. Therefore, it is possible to ensure the coaxiality of the main bearing and the auxiliary bearing by aligning the axes with a jig or the like.

  Moreover, since the pump body is fixed to the sub-bearing disposed in the vicinity, the configuration of the fixing member and the like can be simplified.

  Therefore, the coaxiality of the main bearing and the sub bearing can be ensured without making the sub bearing a complicated configuration such as a self-aligning function. Further, there is no need for a fixing member having a complicated shape, and the pump body can be fixed with a simple configuration. For this reason, the efficiency and reliability of the hermetic compressor can be improved without increasing the cost.

  A hermetic compressor according to a second aspect of the present invention is the first aspect, wherein a pump body lower through hole perpendicular to the axial direction is provided at a lower portion of the pump body, and a pump fixing member is inserted into the pump body lower through hole. The pump fixing member may be fixed to the auxiliary bearing. Thereby, since a pump body and a pump fixing member can be made into a simple shape, the cost of a hermetic compressor can be held down.

  A hermetic compressor according to a third invention is the hermetic compressor according to the second invention, wherein a sub-bearing lower through hole is provided in a lower portion of the sub bearing, and a pump fixing member is inserted into the sub bearing lower through hole and the pump body lower through hole. The pump fixing member may be fixed to the auxiliary bearing. Thereby, since the shape of a pump fixing member can be made into a simple shape like a linear pin shape, the cost of a hermetic compressor can be held down.

  A hermetic compressor according to a fourth aspect of the present invention is that in the third aspect, the diameter of the pump body lower through hole is larger than the diameter of the sub bearing lower through hole, and the pump fixing member is press-fitted into the sub bearing lower through hole. May be. Thereby, fixation of a pump fixing member can be simplified.

  A hermetic compressor according to a fifth aspect of the present invention may be any one of the first to fourth aspects, wherein the hermetic compressor may be inverter-driven at a plurality of operating frequencies. As a result, even in low-speed rotation with large torque fluctuation, the rotor is outside and the rotation radius is large and the effect of inertia is great. Therefore, torque fluctuation can be suppressed and efficiency can be improved without relying on control. Further, even at low speed rotation with a small centrifugal force, the oil can be reliably supplied to the sliding portion by the action of the viscous pump.

  A refrigeration apparatus according to a sixth aspect of the present invention includes a refrigerant circuit in which a hermetic compressor, a radiator, a decompression device, and a heat absorber are connected in a ring shape by piping, and the hermetic compressor is any one of first to fifth. A hermetic compressor according to one invention is used. Thereby, by mounting a highly efficient and highly reliable hermetic compressor, power consumption of the refrigeration apparatus can be reduced, energy saving can be realized, and reliability of the refrigeration apparatus can be improved.

  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 a first embodiment of the present invention.

  FIG. 2 is a longitudinal sectional view of a part of the hermetic compressor according to the first embodiment of the present invention.

  1 and 2, in the hermetic compressor according to the first embodiment, a compressor main body 104 is arranged inside a hermetic container 101 formed by drawing a steel plate. The compressor main body 104 mainly includes an electric element 102 and a compression element 103 driven by the electric element 102. The compressor body 104 is elastically supported by a suspension spring 105.

  Furthermore, in the sealed container 101, for example, a refrigerant gas 106 such as a hydrocarbon-based R600a having a low global warming potential is at a pressure that is the same as that of the low-pressure side of the refrigeration apparatus (not shown) and is in a relatively low temperature state. It is enclosed. A lubricating oil 107 for lubrication is sealed at the bottom of the sealed container 101.

  The sealed container 101 includes a suction pipe 108 and a discharge pipe (not shown). The suction pipe 108 has one end communicating with the space in the sealed container 101 and the other end connected to a refrigeration apparatus (not shown). The discharge pipe guides the refrigerant gas 106 compressed by the compression element 103 to a refrigeration apparatus (not shown).

  The compression element 103 includes a crankshaft 110, a cylinder block 111, a piston 112, a connecting rod 113, and the like.

  The crankshaft 110 includes an eccentric shaft 114, a main shaft portion 115, and a sub shaft portion 116 disposed below the main shaft portion 115.

  A cylinder bore 118 that forms a compression chamber 117 is formed integrally with the cylinder block 111. The cylinder block 111 includes a main bearing 119 that rotatably supports the main shaft 115, and a thrust ball bearing 121 that supports a load in the vertical direction of the crankshaft 110 is provided above the thrust surface 120.

  The piston 112 reciprocates in the cylinder bore 118, and a piston pin (not shown) is disposed so that the axis is parallel to the axis of the eccentric shaft 114.

  The connecting rod 113 has a rod portion 123, a large end hole portion 124, and a small end hole portion (not shown). An eccentric shaft 114 is inserted into the large end hole portion 124, and a piston pin is inserted into the small end hole portion. As a result, the connecting rod 113 connects the eccentric shaft 114 and the piston 112.

  A valve plate 126, a suction valve (not shown), and a cylinder head 127 are fixed to the opening end surface 118a of the cylinder bore 118 opposite to the crankshaft 110 by a head bolt (not shown). Yes. The valve plate 126 includes a suction hole (not shown) and a discharge hole (not shown), the suction valve opens and closes the suction hole (not shown), and the cylinder head 127 closes the valve plate 126.

  The cylinder head 127 has a discharge space from which the refrigerant gas 106 is discharged. The discharge space communicates directly with a discharge pipe (not shown) via a discharge pipe (not shown).

  The electric element 102 is an outer rotor motor composed of a rotor 128 and a stator 129. The rotor 128 is fixed to the main shaft 115 side of the crankshaft 110, and the stator 129 is disposed inside the rotor 128. The stator 129 is fixed to the stator fixing member 130 with screws 131, and the stator fixing member 130 is fixed to a leg portion 132 that extends downward from the cylinder block 111. A secondary bearing 133 that rotatably supports the secondary shaft portion 116 of the crankshaft 110 is fixed to the stator fixing member 130. The electric element 102 is driven at a plurality of operating frequencies by an inverter circuit.

  A cylindrical cavity 134 is formed in the lower part of the crankshaft 110 in the axial direction. A cylindrical pump body 135 having a spiral groove formed on the surface thereof is inserted into the cylindrical cavity 134 with a gap.

  A pump body lower through hole 136 is provided in a lower portion of the pump body 135 in a radial direction orthogonal to the axis of the pump body 135. A sub-bearing lower through-hole 137 having a diameter smaller than the diameter of the pump body lower through-hole 136 is provided at a lower portion of the sub-bearing 133 in a radial direction orthogonal to the axis of the sub-bearing 133.

  A pump fixing member 138 (for example, a locking pin) is press-fitted into the sub bearing lower through hole 137 so as to pass through the pump body lower through hole 136 and the sub bearing lower through hole 137. As a result, the pump body 135 is fixed to the auxiliary bearing 133 so as not to rotate together with the crankshaft 110.

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

  The hermetic compressor forms a refrigeration cycle by connecting a suction pipe 108 and a discharge pipe (not shown) to a refrigeration apparatus (not shown) having a known configuration.

  In this configuration, when the electric element 102 is energized, a current flows through the stator 129, a magnetic field is generated, and the rotor 128 fixed to the main shaft 115 side of the crankshaft 110 rotates. The rotation causes the crankshaft 110 to rotate, and the piston 112 reciprocates in the cylinder bore 118 via a connecting rod 113 that is rotatably attached to the eccentric shaft 114.

  As the piston 112 reciprocates, the refrigerant gas 106 is sucked, compressed, and discharged in the compression chamber 117.

  Further, the rotor 128 that is a rotating body is located above the stator 129 and is separated from the oil surface of the lubricating oil 107. For this reason, stirring of the lubricating oil 107 by the rotor 128 can be prevented, and stirring loss can be suppressed.

  Next, a method for assembling the electric element 102 to the compression element 103 will be described.

  The rotor 128 is fixed to the main shaft 115 side of the crankshaft 110 by shrink fitting, and the stator 129 is fixed to the stator fixing member 130 with screws 131.

  Here, by fixing with the screw 131, distortion due to assembly can be suppressed as compared with press fitting, shrink fitting, and welding. For this reason, assembly accuracy can be improved. In addition, assembly with simple equipment becomes possible, and production costs can be reduced.

  The stator 129 fixed to the stator fixing member 130 in this way is incorporated inside the rotor 128. And it positions with a jig | tool so that the clearance gap between the inner periphery 128a of the rotor 128 and the outer periphery 129a of the stator 129 may become equal. On this, the stator fixing member 130 is fixed to the leg part 132 extended downward from the cylinder block 111. Thereby, the coaxiality of the inner periphery 128a of the rotor 128 and the outer periphery 129a of the stator 129 can be accurately obtained. For this reason, the gap between the inner periphery 128a of the rotor 128 and the outer periphery 129a of the stator 129 can be narrowed, and the motor efficiency is improved.

  The stator fixing member 130 is fixed to the leg portion 132 of the cylinder block 111 processed with high accuracy. For this reason, the stator fixing member 130 can be assembled to the cylinder block 111 with good parallelism. The auxiliary bearing 133 is assembled to the stator fixing member 130 that is assembled to the cylinder block 111 with good parallelism. Therefore, the parallelism between the axis of the main bearing 119 formed in the cylinder block 111 and the axis of the auxiliary bearing 133 is good, and the auxiliary bearing 133 is assembled to the cylinder block 111. By matching the respective axes using a jig, the coaxiality between the main bearing 119 and the sub bearing 133 is good, and the sub bearing 133 can be assembled to the cylinder block 111.

  Next, a method for aligning the axis of the main bearing 119 and the axis of the auxiliary bearing 133 without using a jig will be described.

  The auxiliary bearing 133 is temporarily fixed to the stator fixing member 130, and the crankshaft 110 is rotated. At this time, the rotational torque of the crankshaft 110 is measured while changing the position of the auxiliary bearing 133. Here, if the axis of the main bearing 119 and the axis of the auxiliary bearing 133 are deviated, the crankshaft 110 is twisted and the rotational torque increases. For this reason, the auxiliary bearing 133 is fixed to the stator fixing member 130 at a position where the rotational torque is minimized. Thereby, the sub bearing 133 can be assembled to the stator fixing member 130 in a state where the crankshaft 110 is least twisted, that is, in a state where the coaxiality between the main bearing 119 and the sub bearing 133 is good. For this reason, sliding loss can be reduced and reliability can be improved.

  Next, the oil supply path to each sliding part will be described. As the crankshaft 110 rotates, the lubricating oil 107 rises due to the viscosity of the oil passage formed between the spiral groove formed on the outer periphery of the pump body 135 and the inner peripheral surface of the cylindrical cavity 134. . The lubricating oil 107 that has risen to the upper end of the pump body 135 rises further upward due to the centrifugal force generated by the rotation of the crankshaft 110 and is supplied to each sliding portion.

  At this time, the pump body 135 receives a force that is pulled by the rotation of the crankshaft 110 to rotate. Further, since an oil film is uniformly generated on the outer periphery of the pump body 135, the pump body 135 tends to be positioned at the center of the cylindrical cavity portion 134. Here, there is a gap between the pump body lower through hole 136 and the pump fixing member 138 (locking pin). Therefore, the pump body 135 can be fixed so as not to rotate together with the crankshaft 110 while being movable so as to be positioned at the center of the cylindrical cavity portion 134. Thus, the locking pin is press-fitted into the sub-bearing lower through hole 137 to fix the pump body 135 to the sub-bearing 133. For this reason, since it can assemble by a simple assembling method with inexpensive parts, it is possible to assemble the viscous pump at an optimal position while suppressing cost.

  Further, the pump fixing member 138 can be configured shorter than the conventional configuration. For this reason, the natural frequency can be increased and resonance can be avoided. Therefore, noise vibration can be reduced, and resonance breakage of the pump fixing member 138 can also be prevented.

  In addition, when the hermetic compressor according to the present embodiment is rotated at a low speed by inverter drive, the inertia effect of the rotor 128 is greater than that of the inner rotor motor in which the rotor 128 is disposed inside the stator 129. For this reason, torque fluctuation can be suppressed, complicated control is not required, and efficiency can be improved.

  Further, by extending the pump body 135 upward, it is possible to supply the lubricating oil 107 even at a low speed rotation in which it is difficult to raise the lubricating oil 107 by centrifugal force.

  The fixing of the pump body 135 to the pump fixing member 138 is not limited to the configuration of the through hole and the locking pin as long as the pump body 135 is not detached from the pump fixing member 138. For example, the pump body 135 may include a hook portion that is locked to the locking portion of the pump fixing member 138. In this case, the same effect as described above can be obtained. Further, the fixing of the pump fixing member 138 to the auxiliary bearing 133 is not limited to press-fitting of the locking pin into the through hole as long as the pump fixing member 138 is not detached from the auxiliary bearing 133. For example, the pump fixing member 138 may be formed with a screw prevention portion with respect to the auxiliary bearing 133 and a hook portion that is engaged with the engaging portion of the auxiliary bearing 133. In this case, the same effect as described above can be obtained. .

(Embodiment 2)
FIG. 3 is a schematic diagram showing the configuration of the refrigeration apparatus in Embodiment 2 of the present invention. Here, an outline of the basic configuration of the refrigeration apparatus will be described assuming that the hermetic compressor described in Embodiment 1 is mounted on the refrigerant circuit.

  In FIG. 3, the refrigeration apparatus 200 includes a main body 201, a partition wall 204, and a refrigerant circuit 205. The main body 201 has a heat-insulating box with one side opened and a door that opens and closes the opening. The partition wall 204 partitions the interior of the main body 201 into an article storage space 202 and a machine room 203. The refrigerant circuit 205 cools the storage space 202.

  The refrigerant circuit 205 has a configuration in which the hermetic compressor 206, the heat radiator 207, the decompression device 208, and the heat absorber 209 described in Embodiment 1 are connected in a ring shape.

  And the heat absorber 209 is arrange | positioned in the storage space 202 provided with the air blower (not shown). The cooling heat of the heat absorber 209 is agitated so as to circulate in the storage space 202 by a blower, as indicated by a broken arrow.

  The hermetic compressor 206 described in the first embodiment of the present invention is mounted on the refrigeration apparatus described above. Thereby, the effect of reducing the sliding loss by ensuring the coaxiality of the main bearing and the sub-bearing with a simple configuration and the effect of ensuring the oil supply amount at the time of low speed operation by the viscous pump can be obtained. Further, the refrigerant circuit can be operated with a hermetic compressor with improved efficiency and reliability. Therefore, power consumption of the refrigeration apparatus can be reduced, energy saving can be realized, and reliability of the refrigeration apparatus can be improved.

  As described above, the hermetic compressor according to the present invention can improve efficiency and reliability. For this reason, the hermetic compressor is not limited to household use such as an electric refrigerator or an air conditioner, but can be widely applied to refrigeration apparatuses such as commercial showcases and vending machines.

DESCRIPTION OF SYMBOLS 101 Airtight container 102 Electric element 103 Compression element 110 Crankshaft 111 Cylinder block 112 Piston 113 Connecting rod 114 Eccentric shaft 115 Main shaft part 116 Subshaft part 118 Cylinder bore 119 Main bearing 128 Rotor 129 Stator 130 Stator fixing member 131 Screw 133 Sub bearing 134 Cylindrical cavity Part 135 Pump body 136 Pump body lower through hole 137 Sub-bearing lower through hole 138 Pump fixing member 200 Refrigeration apparatus 205 Refrigerant circuit 206 Sealed compressor 207 Radiator 208 Pressure reduction apparatus 209 Heat absorber

Claims (6)

In an airtight container, an electric element and a compression element driven by the electric element are accommodated,
The compression element is
A crankshaft having a main shaft portion, an eccentric shaft, and a sub-shaft portion provided below the main shaft portion;
A cylinder block having a cylindrical cylinder bore;
A piston that reciprocates within the cylinder bore;
A connecting rod connecting the piston and the eccentric shaft;
A main bearing that is formed in the cylinder block and receives a radial load acting on the main shaft portion and pivotally supports the main shaft portion;
A secondary bearing that receives a radial load acting on the secondary shaft portion and pivotally supports the secondary shaft portion;
The electric element is an outer rotor type motor having a rotor fixed to the main shaft portion side of the crankshaft and a stator disposed below the rotor and inside the rotor,
The stator is fixed to a stator fixing member disposed on the auxiliary shaft side of the crankshaft,
The stator fixing member is fixed to the cylinder block;
The auxiliary bearing is fixed to the stator fixing member;
Having a viscous pump at the bottom of the crankshaft;
The viscous pump has a cylindrical cavity formed in the lower part of the crankshaft in the axial direction, and a pump body coaxially inserted into the cylindrical cavity.
The hermetic compressor, wherein the pump body is fixed to the auxiliary bearing. A pump body lower through hole perpendicular to the axial direction is provided at the lower part of the pump body,
A pump fixing member is inserted into the pump body lower through hole,
The hermetic compressor according to claim 1, wherein the pump fixing member is fixed to the auxiliary bearing. A sub-bearing lower through hole is provided in the lower portion of the sub-bearing,
The pump fixing member is inserted into the sub-bearing lower through hole and the pump body lower through hole,
The hermetic compressor according to claim 2, wherein the pump fixing member is fixed to the auxiliary bearing. The diameter of the pump body lower through hole is larger than the diameter of the auxiliary bearing lower through hole,
The hermetic compressor according to claim 3, wherein the pump fixing member is press-fitted into the sub-bearing lower through hole.   The hermetic compressor according to any one of claims 1 to 4, wherein the hermetic compressor is inverter-driven at a plurality of operating frequencies. It has a refrigerant circuit in which a hermetic compressor, a radiator, a pressure reducing device, and a heat absorber are connected in a ring shape by piping,
A refrigerating apparatus in which the hermetic compressor according to any one of claims 1 to 5 is used for the hermetic compressor.

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