JP2006083754A - Closed type compressor and refrigerating cycle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a closed type compressor provided with an outer rotor type electric motor part and capable of securely preventing interference for a lead wire for connecting a feeding terminal part with the electric motor part electrically to improve reliability and enable silent operation due to lowering of a back part and to provide a refrigerating cycle device. <P>SOLUTION: This closed type compressor 30 is constituted by storing a compression mechanism part 3 in an upper part of a closed case 1, attaching the electric motor part 4 to a rotary shaft 2, and attaching the feeding terminal part 23 connected electrically with the electric motor part through the lead wire 24. The electric motor part is provided with a stator 9 provided with a hole part b fitted into a main shaft receiver in the compression mechanism part, a bottom face umbrella part 10a attached to the rotary shaft and extending in the direction crossing an axial direction of the rotary shaft orthogonally in a lower section of the stator, and a rotor part 10b bent in the direction parallel with the axial direction of the rotary shaft from an outer peripheral end of the bottom part umbrella part and extending by leaving a predetermined clearance from an outer peripheral face of the stator. An upper face of the electric motor part is composed of a reverse umbrella type rotor 10, and the lead wire is connected with the stator through an upper face opening part c of the reverse umbrella type rotor constituting the electric motor part from the feeding terminal part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention includes a hermetic compressor having a so-called outer rotor type electric motor unit including a stator and an umbrella rotor attached to a rotating shaft and extending so as to have a predetermined gap with an outer peripheral surface of the stator, and The present invention relates to a refrigeration cycle apparatus equipped with this hermetic compressor.

For example, a hermetic compressor used as a refrigeration cycle component device such as an air conditioner has various forms. Generally, a compression mechanism unit and an electric motor unit are connected to each other in a hermetic case via a rotating shaft. The electric compressor main body is housed. Recently, a two-cylinder type is often used as the compression mechanism, and a so-called outer rotor type has been proposed as an electric motor.
In the outer rotor type electric motor section, a rotating shaft is pivotally supported on an inner diameter portion of a bearing constituting the compression mechanism portion, and a stator is attached to the outer diameter portion of the bearing. The rotor is attached to a rotating shaft, and an end portion of the rotor extends outward from the outer peripheral end of the stator, and a bent portion is integrally formed at the end of the umbrella portion so that a predetermined gap exists between the outer peripheral surface of the stator. Thus, it is composed of parallel rotor parts and includes a so-called umbrella rotor.
Specifically, for example, as disclosed in [Patent Document 1], the rotating shaft is supported by a main bearing, and a hole provided in the stator is press-fitted and fixed to an outer diameter portion of the main bearing. The The rotary shaft protrudes from the upper end surface of the main bearing and the upper end surface of the stator, and the umbrella portion of the umbrella-type rotor is fitted into the protruding portion.
JP 2001-268832 A

In the hermetic compressor disclosed in the above-mentioned [Patent Document 1], the hermetic case that houses the compression mechanism unit and the motor unit that are connected via the rotating shaft is vertically long in the axial direction compared to the diameter. The compression mechanism portion is disposed on the lower side and the electric motor portion is disposed on the upper side. A power supply terminal portion is provided on the upper end surface of the hermetic case, and is connected to the electric motor portion via a lead wire.
However, in this prior art, since the outer rotor type electric motor part is provided, the rotor part of the umbrella type rotor is located on the outer peripheral side of the stator, and the outer peripheral surface of the rotor part and the inner peripheral wall of the sealed case are There are only a few gaps.
The above lead wire must be inserted into the gap between the outer peripheral surface of the rotor part of the umbrella-type rotor and the inner peripheral wall of the sealed case, but the lead wire itself is a flexible wire and has a slight slack. Even if it occurs, it catches on the umbrella rotor. Naturally, since the lead wire may be disconnected, it is necessary to work very carefully, which increases the number of work steps.

Therefore, in [Patent Document 1], in order to secure a space through which the lead wire passes, instead of increasing the inner diameter of the entire sealed case, the sealed case is made oval in plan view. That is, only the diameter on the side through which the lead wire of the sealed case passes is increased, thereby suppressing the enlargement of the case.
However, in order to produce an oval sealed case, a special mold is required, which adversely affects the cost. In addition, the oval sealed case in a plan view is hardly useful for suppressing an increase in size.
Further, not only the compressor disclosed in [Patent Document 1], but a general hermetic compressor has a deep case formed in a lower case constituting a hermetic case. In assembling this type of compressor, the compression mechanism must be inserted deeply from the upper end opening of the deep-drawn lower case, which is extremely troublesome and poor in workability.

Recently, there has been a tendency to promote downsizing of the refrigeration cycle apparatus by accommodating a hermetic compressor in which the hermetic case is made as low as possible. On the other hand, a sufficient amount of lubricating oil is collected in the sealed case in order to stably supply oil to the compression mechanism. In addition, the refrigeration cycle apparatus itself is increased in size as the capacity increases, and long pipes are used to improve installation, and these apparatuses require a large amount of refrigerant to ensure performance.
Depending on the conditions, the liquid refrigerant may stagnate in the compressor. At this time, the liquid refrigerant sunk in a sufficient amount of lubricating oil is added in the sealed case, and the liquid level in the sealed case rises. If the hermetic case is lowered, the umbrella-type rotor is easily immersed in the lubricating oil containing the liquid refrigerant in which the umbrella-type rotor lies, and at this time, buoyancy is generated in the rotor. When larger buoyancy is applied, the umbrella-shaped rotor tilts and comes into sliding contact with the stator or the sealed case, and abnormal noise is generated, so that silent operation is impaired and reliability may be lowered. Therefore, conventionally, a large gap is provided between the lower part of the rotor and the bottom of the sealed case so that the rotor is not immersed when the liquid refrigerant stagnates in the sealed case. there were.

  The present invention has been made paying attention to the above circumstances, and the purpose thereof is to improve the configuration of the umbrella-type rotor on the premise that the outer rotor type electric motor unit is provided, and to provide a power supply terminal unit and an electric motor unit. It is an object of the present invention to provide a hermetic compressor that reliably prevents interference with a lead wire that is electrically connected to each other to improve reliability, and a refrigeration cycle apparatus including the hermetic compressor. .

In order to satisfy the above-described object, the hermetic compressor of the present invention accommodates a compression mechanism portion having a bearing at the upper portion of the hermetic case, and rotates so as to extend downward from the compression mechanism portion to the bearing of the compression mechanism portion. The shaft is pivotally supported, the motor portion is attached to the portion extending from the compression mechanism portion of the rotating shaft, the power supply terminal portion that is electrically connected to the motor portion via the lead wire is attached to the upper portion of the sealed case,
The motor unit includes a stator having a hole fitted to a bearing of the compression mechanism unit, and a bottom umbrella attached to the rotating shaft and extending in a direction perpendicular to the axial direction of the rotating shaft at a lower portion of the stator. And a rotor portion that is bent from the outer peripheral end of the bottom surface umbrella portion in a direction parallel to the axial direction of the rotary shaft and extends with a predetermined gap from the outer peripheral surface of the stator. The lead wire is connected to the stator from the power supply terminal portion through the upper surface opening of the reverse umbrella rotor that constitutes the motor portion.

  In order to satisfy the above-described object, the refrigeration cycle apparatus of the present invention comprises a hermetic compressor, a condenser, a decompression device, and an evaporator connected by refrigerant piping. The hermetic compressor includes a hermetic case and the hermetic case. A compression mechanism portion housed in an upper portion of the compression mechanism portion, a rotation shaft supported by the bearing of the compression mechanism portion and extending downward from the compression mechanism portion, and a portion of the rotation shaft extending from the compression mechanism portion. An electric motor part to be attached; and a power supply terminal part that is attached to the upper part of the hermetic case and electrically connected to the electric motor part via a lead wire, and the electric motor part is a hole fitted to the bearing of the compression mechanism part And a bottom umbrella portion that is attached to the rotating shaft and extends in a direction orthogonal to the axial direction of the rotating shaft at the lower part of the stator, and parallel to the axial direction of the rotating shaft from the outer peripheral end of the bottom umbrella portion The outer circumferential surface of the stator Is provided with a rotor portion that extends with a predetermined gap and the upper surface is an open umbrella rotor, and the lead wire is an upper opening of the reverse umbrella rotor that constitutes the motor portion from the power supply terminal portion. Is connected to the stator via the part, and an oil sump is formed on the inner bottom of the sealed case to be supplied to the compression mechanism, and the bottom umbrella of the umbrella-type rotor is stored when liquid refrigerant is stored in the sealed case. The liquid refrigerant and the total amount of lubricating oil are attached to a position soaked in the total liquid surface, and at least a bottom umbrella portion is provided with a plurality of through holes.

  According to the present invention, in a hermetic compressor having an outer rotor type electric motor part, it is possible to reliably prevent interference with a lead wire that electrically connects the power feeding terminal part and the electric motor part, thereby improving reliability. In the refrigeration cycle apparatus provided with the above-described hermetic compressor, the hermetic compressor can be reduced in height and the lubricating oil surface can be stabilized.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of a hermetic compressor 30.
In the figure, reference numeral 1 denotes a sealed case, which is an assembly formed by combining an upper case 1A and a lower case 1B. Both the upper case 1A and the lower case 1B are integrally formed in a substantially bowl shape with inexpensive steel materials for shallow drawing, and each uses a steel pipe or the like for the body part and has two ends of the shallow drawing, You may integrate by means, such as arc welding.
The upper case 1A is opened at the entire lower end, and the lower case 1B is opened at the entire upper end. The outer diameter of the lower end opening of the upper case 1A and the inner diameter of the upper end opening of the lower case 1B are formed substantially the same, and the inner diameter of the upper end opening of the lower case 1B is fitted into the outer diameter of the lower end opening of the upper case 1A. With this means, the fitting portion has a complete seal structure.

In such a sealed case 1, an electric compressor main body 5 is accommodated in which a compression mechanism section 3 and an electric motor section 4 which will be described later are connected via a rotating shaft 2. The compression mechanism unit 3 is disposed on the upper side and is attached to the upper case 1 </ b> A constituting the sealed case 1. The electric motor unit 4 is disposed on the lower side, and is disposed to face the lower case 1 </ b> B constituting the sealed case 1.
The compression mechanism part 3 is a two-cylinder type having two sets of cylinders 7A and 7B above and below the intermediate partition plate 6, and the electric motor part 4 includes a stator 9 and a reverse umbrella rotor 10. This is a so-called outer rotor type electric motor section.

Further, the compression mechanism section 3 will be described in detail. A first cylinder 7A is provided on the lower side, and a second cylinder 7B is provided on the upper side through the intermediate partition plate 6. The outer diameter of the second cylinder 7B is formed larger than the outer diameter of the first cylinder 7A, and this outer peripheral portion is fixedly attached to the mounting seat 12 of the upper case 1A via a plurality of mounting bolts 11.
A secondary bearing 13 is attached to the upper surface of the second cylinder 7B, and the lower opening surface of the cylinder is closed. The central shaft portion of the upper case 1A is a protrusion a that bulges upward, and most of the auxiliary bearing 13 is inserted and disposed in this protrusion.

The lower opening surface of the second cylinder 7B is closed by the intermediate partition plate 6. The upper opening surface of the first cylinder 7 </ b> A is closed by the intermediate partition plate 6, and the lower opening surface is closed by the main bearing 15. Therefore, a second cylinder chamber (not shown) surrounded by the sub-bearing 13 and the intermediate partition plate 6 is formed in the second cylinder 7B, and the intermediate partition plate 6 and the main bearing 15 are formed in the first cylinder 7A. A first cylinder chamber (not shown) that is enclosed is formed.
Each of the first and second cylinder chambers accommodates eccentric portions integrally provided on the rotary shaft 2, and a roller is rotatably fitted in these eccentric portions. The eccentric portions are eccentric so that the centers of gravity are located at positions of the same dimension and in the same direction through the center of the rotating shaft 2.
As the rotating shaft 2 rotates, the rotating shaft eccentric portion and the roller rotate eccentrically in each cylinder chamber. A part of the circumferential surface of the roller always makes a linear contact with the circumferential surface of the cylinder chamber along the axial direction, and this contact portion divides the cylinder chamber into two chambers. One chamber portion of the cylinder chamber divided in the rotation direction of the roller is provided with a valve mechanism.

The main bearing 15 is integrally provided with a flange portion 15a that closes the upper end opening surface of the first cylinder 7A, and protrudes downward along the rotary shaft 2 from the flange portion. And a boss portion 15b that rotatably supports the shaft.
The rotating shaft 2 protrudes from the lower end of the main bearing boss portion 15 b, and the lower end surface extends to a portion near the bottom surface of the lower case 1 B constituting the sealed case 1. As will be described later, an oil reservoir 16 for collecting lubricating oil is formed at the inner bottom of the lower case 1B, and the lower portion of the rotating shaft 2 is immersed in the lubricating oil. The lower end surface of the rotating shaft 2 is opened, and an oil supply mechanism (not shown) is provided in the opening. As the rotary shaft 2 rotates, an oil supply mechanism acts to suck up the lubricating oil in the oil reservoir 16 and supply oil to each sliding portion of the compression mechanism.

A first balance weight 17 is attached to a portion of the rotating shaft 2 that protrudes downward from the main bearing boss portion 15b, and a second balance is provided to a portion that is spaced apart from the first balance weight by a predetermined distance. A weight 18 is attached. The second balance weight 18 is eccentric with respect to the first balance weight 17 so that the centers of gravity are located in the directions symmetrical to each other through the center of the rotary shaft 2 and at the same distance from each other.
In the above-described configuration, in particular, there is no means for supporting the lower end portion of the rotary shaft 2, but by attaching the first and second balance weights 17 and 18 to the rotary shaft 2, the rotation is accompanied. Axial shake can be reliably controlled.

The electric motor unit 4 is configured as described below with respect to the compression mechanism unit 3 configured as described above.
The motor unit 4 is attached to the stator 9 having a hole b fitted to the outer diameter portion of the main bearing boss 15b constituting the compression mechanism unit 3, and the stator 9, and is attached to the rotating shaft 2. 9 and the above-described reverse umbrella type rotor 10 formed so as to have a predetermined interval.
In other words, approximately half of the stator 9 is fitted to the main bearing boss portion 15b from the upper end surface, and the remaining approximately half projects from the lower end surface of the main bearing boss portion 15b. The first balance weight 17 is located in the hole b of the stator 9 protruding from the lower end surface of the main bearing boss 15b.

With such a mounting structure of the stator 9, the coil portions k protruding from the upper and lower end faces of the stator 9 are brought as close as possible to the extent that the upper coil portion k and the main bearing flange portion 15b do not contact each other. This contributes to a reduction in the overall height of the sealed case 1.
The inverted umbrella rotor 10 includes a bottom umbrella portion 10a extending in a radial direction from the second balance weight 18 fitted and fixed to the lower portion of the rotary shaft 2, and a rotary shaft at an outer peripheral end of the bottom umbrella portion 10a. And a rotor portion 10b that is bent along the two axial directions. An iron core 20 made of an electromagnetic steel plate is attached along the inner peripheral surface of the rotor portion 10b, and a permanent magnet 21 is attached along the inner peripheral surface of the iron core. The permanent magnet 21 is opposed to the outer peripheral surface of the stator 9 with a narrow gap, and these constitute a rotor in a normal motor unit.

In other words, the reverse umbrella-type rotor 10 is formed in a substantially U-shaped cross section and has an opening c whose upper surface is open, and the stator 9 is disposed in the reverse umbrella-type rotor with the rotary shaft 2 and the main shaft. It becomes a form accommodated with the receiving boss | hub part 15b. However, the upper surface of the stator 9 is exposed at the upper surface opening c of the inverted umbrella rotor 10 and the upper coil portion k protrudes upward from the upper surface opening c.
2A and 2B are a schematic perspective view and a plan view of the inverted umbrella rotor 10.
A plurality of through holes 22 are provided in the bottom umbrella portion 10a and the rotor portion 10b constituting the inverted umbrella rotor 10 respectively. Although the reason for providing these through holes 22 will be described later, the through holes 22 do not necessarily have to be provided in the rotor portion 22 and may be provided at least in the bottom surface umbrella portion 10a.
In FIG. 2B, a hole 23 provided at the center of the bottom umbrella 10a is a mounting hole for the second balance weight 18, and the through-hole 22 is provided around this hole. . The through hole 22 provided in the rotor part 10b is provided by removing the iron core and the permanent magnet from the place where the iron core 20 and the permanent magnet 21 are attached to the rotor part 22. Therefore, it is not necessarily limited to a perfect circle, and may be an elliptical hole.

As shown in FIG. 1 again with respect to the motor part 4, the upper case 1A of the sealed case 1 is provided with a power supply terminal part 23 that is electrically connected to a commercial power supply, and is attached to the upper case. It is at a position facing the compression mechanism 3.
The power supply terminal portion 23 and the upper coil portion k of the stator 9 are electrically connected via a lead wire 24. As described above, the upper coil portion k of the stator 9 protrudes from the upper surface opening c of the inverted umbrella rotor 10, and the lead wire extending from the power supply terminal portion 23 to the stator upper coil portion k. 24 is connected.

In other words, the lead wire 24 is wired at a position separated from the inverted umbrella rotor 10, and the connection work between the lead wire and the upper coil portion k of the stator 9 can be performed without any trouble. For this reason, the lead wire 24 has nothing to do with the rotation of the reverse umbrella rotor 10.
FIG. 4 is a configuration diagram of a refrigeration cycle circuit in a refrigeration cycle apparatus that is an air conditioner, for example.
An outdoor heat exchanger (condenser) 40, a capillary tube 50, and an indoor heat exchanger (evaporator) 60 are sequentially provided in the refrigerant pipe P connected to the above-described hermetic compressor 30.
In the hermetic compressor 30 provided in such a refrigeration cycle apparatus, a drive signal is input to the stator 9 via the power supply terminal portion 23, and the reverse umbrella rotor 10 is rotationally driven. The rotating shaft 2 connected integrally with the inverted umbrella rotor 10 rotates, and the eccentric portion and the roller of the rotating shaft 2 rotate eccentrically in the first cylinder chamber and the second cylinder chamber. Accordingly, the refrigerant gas is sucked into the first and second cylinder chambers via a suction pipe (not shown) and is compressed to fill the sealed case 1.

Then, the refrigerant is discharged through the refrigerant pipe P, and the outdoor heat exchanger 40, the capillary tube 50, and the indoor heat exchanger 60 are sequentially guided to perform a refrigeration cycle action, and are sucked into the hermetic compressor 30 and compressed again. Is done.
Further, in the hermetic compressor 30, the lubricating oil is sucked up from the oil reservoir 16 of the lower case 1 </ b> B as the rotary shaft 2 rotates, and is supplied to each sliding portion constituting the compression mechanism unit 3. Therefore, the lubricity is completely ensured in the compression mechanism portion 3. Part of the lubricating oil supplied to each sliding part returns to the oil reservoir 14 as it is, and part of the lubricating oil floats in the sealed case 1 as oil particles, and the inner wall surface of the sealed case 1 and the reverse umbrella rotor 10. The oil drops into contact with the peripheral surface and the rotating shaft 2 and flows down to return to the oil reservoir 16 again.

By changing the configuration of the outer rotor type electric motor unit 4, in particular, the reverse umbrella type rotor 10, the lead wire 24 is separated from the reverse umbrella type rotor 10, and the contact is made regardless of the rotation of the rotor. There is no fear.
In addition, since the positions of the power supply terminal portion 24, the lead wire 24, and the upper coil portion k of the stator 9 are all set, they are all far away from the lubricating oil reservoir 16 formed on the inner bottom portion of the sealed case 1. Therefore, it is possible to ensure insulation with respect to the connecting portions.

As shown in FIG. 1, the liquid level d of the oil sump 16 of the lubricating oil formed on the inner bottom of the sealed case 1 is the bottom umbrella in the inverted umbrella rotor 10 during the normal compression operation of the compressor. It exists in the downward part of the part 10a. That is, the reverse umbrella-type rotor 10 and the liquid level d of the oil reservoir 16 are separated from each other, so that the lubricating oil in the oil reservoir does not become resistance due to the rotation of the rotor 10.
However, actually, as in the present embodiment, the hermetic case 1 is made as low as possible to reduce the size of the hermetic compressor 30 and the refrigeration cycle apparatus that accommodates this compressor. Promoting.

On the other hand, when a sufficient amount of lubricating oil is collected in the sealed case 1 and a large amount of refrigerant is provided to ensure the performance as the refrigeration cycle device, when the liquid refrigerant stagnates in the compressor 30, That is, when the liquid refrigerant is stored, the liquid level e rises to the position indicated by the two-dot chain line in FIG.
When liquid refrigerant is stored in the sealed case 1, at least the bottom umbrella portion 10 a of the reverse umbrella rotor 10 and the rotor portion are placed in a position where the liquid refrigerant and the total amount of lubricating oil are immersed in the total liquid level e. Part of 10b is soaked. In addition, as the sleeping state of the liquid refrigerant, only in the sealed case 1 and in the sealed case 1 of the compressor 30 when sleeping in both the outdoor heat exchanger 40 other than the compressor 30 and other components of the refrigeration cycle apparatus. Although there is a case where the liquid refrigerant falls in the sealed case 1 (the amount of liquid refrigerant in the sealed case 1 is maximized), the present invention means at least the latter case.
As it is, a certain degree of buoyancy is generated in the reverse umbrella rotor 10 and the tilt is easy to be caused, and it is slidably brought into contact with the stator 9 or the sealed case 1 to cause abnormal noise. However, since the through hole 22 is provided at least in the bottom umbrella 10a and the rotor 10b as much as possible here, even if the liquid level e rises as shown in the drawing, Lubricating oil and the stagnation liquid refrigerant circulate, and buoyancy does not occur in the reverse umbrella rotor 10.
Therefore, even if the motor unit 4 is energized in this state and the reverse umbrella-type rotor 10 is rotationally driven, the rotor maintains a normal posture and does not come into contact with the stator 9, the sealed case 1, etc., and noise is generated. Since there is no room to do so, quiet operation is ensured. In addition, since the distance between the rotor and the bottom of the hermetic case can be reduced as compared with the conventional one, the overall height of the compressor can be reduced.
3A and 3B are a cross-sectional view and a plan view showing a modification of the inverted umbrella rotor 10A.
The plurality of through holes 22A are provided only in the bottom umbrella 10a of the reverse umbrella rotor 10 and are not provided in the rotor 10b. Each through-hole 22A is formed in the mark of the cut and raised f having a concave cross section, and each cut and raised f is unified in a predetermined direction. In other words, the cut and raised f is processed in a direction (that is, counterclockwise direction) opposite to the direction (for example, clockwise direction) in which the reverse umbrella rotor 10A rotates.
By applying such processing to the reverse umbrella rotor 10, the lubricating oil circulates through the through-hole 22 </ b> A at the time of stop, and the rotor is not buoyant. When the motor unit 4 is energized and the reverse umbrella rotor 10A is rotationally driven, the lubricating oil and the stagnation liquid refrigerant existing inside the motor part 4 flow out very smoothly from the through hole 22A. The efficiency of the motor part is ensured with less lubrication.
Further, the compression mechanism section 3 is attached to the upper case 1 </ b> A constituting the sealed case 1. In this state, the motor section 4 is already assembled to the compression mechanism section 3 via the rotary shaft 2. That is, before assembling the upper case 1A into the lower case 1B, all of the electric compressor main body 5 is attached to the upper case 1A and the basic assembly is completed, and the assembly workability is greatly improved. The impact on productivity will be significant.

1 is a schematic cross-sectional view of a hermetic compressor according to an embodiment of the present invention. The perspective view and top view of a reverse umbrella type rotor which concern on the same embodiment. Sectional drawing and top view of a reverse umbrella type | mold rotor of a modification. The refrigeration cycle circuit block diagram of the refrigeration cycle apparatus based on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sealing case, 3 ... Compression mechanism part, 15 ... Main bearing, 2 ... Rotating shaft, 4 ... Electric motor part, 24 ... Lead wire, 23 ... Feeding terminal part, 9 ... Stator, 10a ... Bottom umbrella part, 10b ... Rotor part, 10 ... Reverse umbrella type rotor, 16 ... Oil sump part, 22 ... Through hole, 1B ... Lower case, 1A ... Upper case, 30 ... Hermetic compressor, 40 ... Outdoor heat exchanger (condenser) 50 ... Capillary tube (expansion mechanism), 60 ... Indoor heat exchanger (evaporator).

Claims (3)

A sealed case;
A compression mechanism housed in the upper part of the sealed case and provided with a bearing;
A rotary shaft supported by the bearing of the compression mechanism portion and extending downward from the compression mechanism portion;
An electric motor attached to a portion extending from the compression mechanism of the rotating shaft;
It is attached to the upper part of the sealed case, and includes a power supply terminal part electrically connected to the electric motor part via a lead wire,
The motor section is
A stator having a hole to be fitted to the bearing of the compression mechanism,
A bottom umbrella portion attached to the rotary shaft and extending in a direction perpendicular to the axial direction of the rotary shaft at a lower portion of the stator, and a direction parallel to the axial direction of the rotary shaft from the outer peripheral end of the bottom umbrella portion The outer peripheral surface of the stator is bent and includes a rotor portion extending with a predetermined gap, and the upper surface is formed of an inverted umbrella rotor that is opened,
The hermetic compressor, wherein the lead wire is connected to the stator through an upper surface opening of a reverse umbrella rotor that constitutes an electric motor unit from the power supply terminal unit. The sealed case is
A lower case with an opening on the top surface;
The lower case is provided with a lower surface opening that is closely fitted to the upper surface opening of the lower case, and is composed of a compression mechanism and an upper case to which an electric motor is attached via a rotating shaft. The hermetic compressor according to 1. In a refrigeration cycle apparatus formed by connecting a hermetic compressor, a condenser, a decompressor, and an evaporator with a refrigerant pipe,
The hermetic compressor is housed in a hermetic case, an upper part of the hermetic case, and includes a compression mechanism unit including a bearing, and is supported by the bearing of the compression mechanism unit and extends downward from the compression mechanism unit. A rotating shaft, an electric motor portion attached to a portion extending from the compression mechanism portion of the rotating shaft, and a power supply terminal portion attached to the upper portion of the hermetic case and electrically connected to the electric motor portion via a lead wire And
The electric motor section is attached to the stator having a hole fitted to the bearing of the compression mechanism section and the rotating shaft, and extends in a direction perpendicular to the axial direction of the rotating shaft at a lower portion of the stator. The bottom umbrella part to be taken out, and the rotor part which is bent from the outer peripheral end of the bottom umbrella part in a direction parallel to the axial direction of the rotation shaft and extends with a predetermined gap from the outer peripheral surface of the stator And the upper surface is made of a reverse umbrella type rotor that is opened,
The lead wire is connected to the stator through an upper surface opening of a reverse umbrella rotor that constitutes an electric motor unit from the power supply terminal unit,
In the inner bottom portion of the sealed case, an oil sump portion to be supplied to the compression mechanism portion is formed,
When the liquid refrigerant is stored in the sealed case, the bottom umbrella portion of the umbrella rotor is attached to a position where the liquid refrigerant and the total amount of lubricating oil are immersed in the total liquid surface.
A refrigerating cycle apparatus, wherein a plurality of through holes are provided in at least the bottom umbrella portion.

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