KR101216264B1

KR101216264B1 - Electric compressor

Info

Publication number: KR101216264B1
Application number: KR1020100025846A
Authority: KR
Inventors: 아키라 하시모토; 준이치 스즈키; 마유미 고바야시; 다카야스 사이토
Original assignee: 산요덴키가부시키가이샤
Priority date: 2009-09-30
Filing date: 2010-03-23
Publication date: 2012-12-28
Also published as: JP2011074811A; CN102032189A; KR20110035825A

Abstract

<Problem> There was a possibility that the amount of oil discharged to the outside of the electric compressor is increased or the oil level of the oil reservoir is lowered, resulting in insufficient oil.
<Solution> The transmission element 14 and the rotational compression element (compression element) 32 driven by the transmission element 14 are accommodated in the sealed container 12, and the transmission element 14 is connected to the stator winding 28. In the rotary compressor (rotary compressor) 10 which consists of a stator 22 provided with the rotor and the rotor 24 which rotates in this stator 22, it is formed in the outer edge part of the stator 22, and is sealed It is provided with the cutout part 22A which comprises the oil return passageway 80 with the container 12, and the abutting parts 29A and 29B of the coil end of the stator winding 28 are removed from the range of the cutout part 22A. It was arrange | positioned at the position which shifted.

Description

Electric Compressor {ELECTRIC COMPRESSOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric compressor comprising a stator having a stator winding in a hermetically sealed container and a rotating element rotating in the stator, and a compression element driven by the rolling element.

Conventionally, in an internal high pressure type rotary compressor in which an electric element and a rotary compression element are accommodated in an electric compressor, for example, an airtight container, the electric element is disposed above the inner space of the airtight container, and the electric element is disposed below the electric compressor. It is made by receiving a rotary compression element driven by the rotary shaft. The transmission element is composed of a stator fixed to the inner surface of the sealed container and a rotor rotatably installed inside the stator, and the stator includes a stator winding for imparting a magnetic field to the rotor.

In addition, the rotary compression element is fitted to the cylinder, the eccentric portion formed on the rotary shaft, the roller eccentrically rotates in the cylinder, vanes that abut the cylinder into the low pressure chamber side and the high pressure chamber side in contact with the roller, and the cylinder up and down. And a discharge noise chamber formed by closing a surface on the side opposite to the surface abutting the cylinder of the support member with a cup-shaped cup member disposed on the support shaft.

In this configuration, when the stator winding of the stator is energized through the terminal and the wiring, the electric element is started to rotate the rotor. By this rotation, the roller fitted to the eccentric part in the cylinder integrally formed with the rotating shaft rotates the inside of the cylinder. As a result, the low temperature low pressure refrigerant gas is sucked into the low pressure chamber side of the cylinder of the rotary compression element. Then, the refrigerant gas is compressed by the operation of the roller and the vane to be a refrigerant gas of high temperature and high pressure and discharged to the discharge noise chamber. Thereafter, the refrigerant gas in the discharge noise chamber was discharged into the sealed container, passed through the sealed container, and discharged from the refrigerant discharge pipe to the outside (see Patent Document 1, for example).

[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-300744

By the way, in such an electric compressor, an oil pump as a lubrication means is provided at the end (lower end) of the rotary compression element side of the rotary shaft, and sucks the lubricating oil from the oil reservoir formed at the bottom of the sealed container and rotates it. Supply to the slide part of a compression element etc. prevents abrasion and sealing of the slide part of a rotary compression element. For this reason, a part of the oil supplied to the rotary compression element was mixed in the refrigerant gas compressed by the rotary compression element and discharged together with the refrigerant gas into the sealed container. If the oil mixed in the refrigerant gas is discharged together with the refrigerant gas to the outside of the rotary compressor, the oil level of the oil reservoir decreases, resulting in a problem that the oil of the rotary compressor is insufficient.

Therefore, the refrigerant discharge pipe is disposed above the sealed container to secure a path for the refrigerant gas to pass through the inside of the sealed container as long as possible until the refrigerant gas discharged from the rotary compression element into the sealed container is discharged to the outside. Attempts have been made to reduce the amount of oil discharged to the outside of the rotary compressor, for example, by separating the oil in the process of moving the refrigerant gas inside the sealed container, or by installing an oil separator on the upper side of the rotating shaft.

In addition, an oil return passage is formed between the stator and the sealed container for returning oil separated from the refrigerant gas to the bottom oil reservoir at the top of the sealed container, thereby easily returning the oil at the top of the sealed container to the oil reservoir at the bottom. Research was also being done. As shown in Fig. 5, the oil return passage is formed between the cutout 122A and the sealed container when the outer circumferential edge of the stator 122 is cut in a number of places in the axial direction and mounted on the inner surface of the sealed container. The clearance gap is an oil return passage.

However, since the flow of the oil to return to the lower oil reservoir from the oil return passage and the flow of the refrigerant gas compressed by the rotary compression element to the upper refrigerant discharge pipe are the opposite flow, the refrigerant gas The flow of the discharge of the oil inhibited the flow of the oil to return to the oil reservoir, and the amount of discharge to the outside increased, or the oil level of the oil reservoir decreased, resulting in insufficient oil.

The present invention has been made to solve the above technical problem, and aims to reduce the amount of oil discharged to the outside of the electric compressor.

The motor-driven compressor of claim 1 comprises an electric element and a compression element driven by the electric element in a sealed container, the electric element comprising a stator having a stator winding and a rotor rotating in the stator. A cutout portion formed on the outer edge of the stator and forming an oil return passage between the hermetic container, and the abutment portion of the coil end of the stator winding is disposed at a position shifted from the range of the cutout portion. It is done.

In the above-mentioned invention, the electric compressor of claim 2 is characterized in that the electric element is disposed above the compression element, and an oil reservoir is formed at the bottom of the sealed container.

The motor-driven compressor of claim 3 comprises an electric element and a compression element driven by the electric element in a sealed container, the electric element comprising a stator having a stator winding and a rotor rotating in the stator. It is formed on the outer edge of the stator, and provided with a cutoff portion constituting the oil return passage between the airtight container, characterized in that the shield member is installed to close the butt portion of the coil end of the stator winding.

In the invention of claim 3, the electric compressor of the invention of claim 4 is characterized in that the shielding member is an insulating paper which insulates between stator windings.

In the invention according to claim 3 or 4, the electric compressor of claim 5 is characterized in that the electric element is arranged above the compression element, and an oil reservoir is formed at the bottom of the sealed container.

In the invention described in claim 5, the motor-driven compressor of claim 6 is characterized in that a shielding member is provided at the butt portion of the coil end below the stator winding.

According to the invention of claim 1, there is provided an electric compressor comprising an electric element and a compression element driven by the electric element, the electric element comprising a stator having a stator winding and a rotor rotating in the stator. In the outer edge portion of the stator, provided with a cutoff portion constituting the oil return passage between the sealed container, by arranging the butt portion of the coil end of the stator winding in a position deviated from the range of the cutoff portion, the oil return passage It is possible to avoid the problem that the flow of oil is inhibited.

For example, as in claim 2, if the transmission element is disposed above the compression element, and the oil reservoir is configured at the bottom of the sealed container, according to the present invention, the oil return passage from the upper side in the sealed container. It is possible to secure the flow of oil passing through the oil reservoir at the bottom, and to prevent the oil level of the oil reservoir from being lowered. This makes it possible to improve the performance and the reliability of the electric compressor.

According to the invention of claim 3, there is provided an electric compressor comprising an electric element and a compression element driven by the electric element in an airtight container, the electric element comprising a stator having a stator winding and a rotor rotating in the stator. An oil return passage is formed in the outer edge of the stator, provided with a cutoff portion constituting an oil return passage between the sealed container, and providing a shielding member for closing the butt portion of the coil end of the stator winding. It is possible to avoid the problem that the flow of oil passing through the is inhibited.

In particular, in the invention described in claim 3, when the shielding member is made of insulating paper that insulates between stator windings as in the invention of claim 4, it is easy to have a structure in which the flow of oil through the oil return passage is not inhibited by the insulating paper. It is possible to make it. Thereby, it becomes possible to suppress manufacturing cost.

In the invention according to claim 3 or 4, as in the invention of claim 5, the transmission element is disposed above the compression element, and an oil reservoir is formed at the bottom of the sealed container. Through the oil return passage from the upper side to ensure the flow of the oil back to the bottom oil reservoir, it is possible to prevent the oil surface of the oil reservoir is lowered. This makes it possible to improve the performance and the reliability of the electric compressor.

In addition, as in the invention described in claim 5, when the transmission element is disposed above the compression element, and the oil reservoir is configured at the bottom of the sealed container, the shield member is provided on the lower side of the stator winding as in the invention of claim 6. By simply installing at the butt portion of the coil end, the oil flow can be sufficiently secured and the oil level of the oil reservoir can be prevented from being lowered. This makes it possible to considerably suppress an increase in cost.

1 is a longitudinal side view of an electric compressor of an embodiment to which the present invention is applied.
2 is a side view of the stator of the transmission element.
3 is a plan view of the stator of FIG.
4 is a plan view of a stator of another embodiment (Example 2).
5 is a plan view of a conventional stator.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on drawing. In this embodiment, as will be described in detail below, there is provided an electric element and one rotary compression element driven by the electric element in the hermetic container, and the inside for discharging the refrigerant compressed by the rotary compression element into the hermetic container. It demonstrates by applying this invention to a high-pressure type rotary compressor. However, the present invention is not limited to the electric compressor of the embodiment. For example, the present invention can be applied to a scroll compressor, a reciprocating compressor, or the like. The present invention is effective even when applied to a compressor.

Example 1

1 is a longitudinal sectional side view of a rotary compressor (electric compressor) according to an embodiment to which the present invention is applied, FIG. 2 is a side view of a stator of a transmission element, and FIG. 3 is a plan view of the stator of FIG. The rotary compressor 10 of the embodiment is a transmission element 14 as a drive element disposed above the inner space of the hermetic container 12 in a hermetic cylindrical container 12 made of a steel plate. And a rotary compression element 32 disposed below the transmission element 14 and driven by the rotation shaft 16 of the transmission element 14.

The airtight container 12 includes a container body 12A for accommodating the transmission element 14 and the rotary compression element 32, and an approximately bowl-shaped end cap (cover) for closing the upper opening of the container body 12A ( 12B), and an oil reservoir is formed at the bottom of the sealed container 12. A circular mounting hole 12D is formed in the upper surface of the end cap 12B, and the terminal 12 (without wiring) 20 for supplying electric power to the electric element 14 is mounted in the mounting hole 12D. have. In addition, the end cap 12B is equipped with a refrigerant discharge pipe 96, and one end of the refrigerant discharge pipe 96 communicates with an upper space in the sealed container 12 above the transmission element 14. Moreover, the mounting pedestal 11 is provided in the bottom part of the airtight container 12 (12 A of container bases).

The transmission element 14 rotates about the stator 22 which is welded and fixed annularly along the inner circumferential surface of the upper space of the airtight container 12, and around the rotating shaft 16 inside the stator 22. It is comprised by the rotor 24 supported as possible. In addition, the stator 22 includes a stator winding 28 that imparts a rotor field to the rotor 24.

The stator 22 is composed of a stator iron core 26 in which a plurality of thin plate steel sheets are stacked, and a stator winding 28 having a distribution winding type is formed in a slot formed by the teeth of the stator iron core 26. Is inserted. The stator winding 28 is composed of a main winding 28A and an auxiliary winding 28B disposed therein, and between the main winding 28A and the auxiliary winding 28B is an insulated paper (insulating member) not shown. Insertion is ensured.

In Fig. 1, 80 is an oil return passage. The oil return passage 80 is formed by cutting the outer circumferential edge of the stator core 26 of the stator 22 in the axial center direction (up and down direction) in plural places (four in this embodiment). That is, when the stator 22 (stator core 26) is mounted on the inner surface of the container body 12 of the sealed container 12, the cut portion (incision) 22A and the container of the sealed container 12 Since a gap is formed between the inside of the main body 12A, this gap is used as the oil return passageway 80.

Similarly to the stator 22, the rotor 24 is composed of a laminated body in which a plurality of thin plate steel sheets are laminated, and a magnet (permanent magnet) (not shown) is mounted inside.

In addition, an oil separation plate 17 located above the rotor 24 is attached to an end portion (upper end) on the transmission element 14 side of the rotating shaft 16. On the other hand, at the end (lower end) of the rotary compression element 32 side of the rotary shaft 16, an oil pump 18 as oil supply means is provided. The oil pump 18 sucks the lubricating oil from the oil reservoir formed at the bottom of the sealed container 12 and supplies it to the slide portion of the rotary compression element 32 to prevent wear and is installed to seal. The lower end of this oil pump 18 is located in the oil reservoir.

In Fig. 1, reference numeral 38 denotes a cylinder constituting the rotary compression element 32, and 54 denotes a main support having a bearing portion 54A of the rotary shaft 16 while closing the opening of the upper surface of the cylinder 38. The upper support member 56 as a member is a lower support member having a bearing portion 56A of the rotating shaft 16 while closing the opening of the lower surface of the cylinder 38.

Although not shown in FIG. 1, in the cylinder 38, a roller fitted to an eccentric portion formed on the rotating shaft 16 and eccentrically rotated in the cylinder 38, and the inner side of the cylinder 38 in contact with the roller are connected to the low pressure chamber side. The vane etc. which divide into the high pressure chamber side are provided.

Moreover, the surface (upper surface) on the side opposite to the side where the cylinder 38 of the upper support member 54 is located is covered by the cup member 63, and the inner side of the high support high pressure compressed by the cylinder 38 is applied. A discharge noise chamber 62 through which the refrigerant is discharged is formed. The discharge noise chamber 62 and the inside of the sealed container 12 communicate with each other by a discharge hole (not shown) passing through the cup member 63, from which the refrigerant gas inside the discharge noise chamber 62 is sealed. It is discharged into the container 12 (specifically, toward the transmission element 14 located above the cup member 63).

A sleeve 91 is welded to a side surface of the container body 12A of the sealed container 12 at a position corresponding to a suction passage not shown in the cylinder 38. In the sleeve 91, one end of the refrigerant introduction pipe 92 for introducing refrigerant gas into the cylinder 38 is inserted and connected, and one end of the refrigerant introduction pipe 92 is connected to the suction passage of the cylinder 38. Communicate. The other end of the refrigerant introduction pipe 92 is opened into the accumulator 98.

The accumulator 98 is a tank for gas-liquid separation of the suction refrigerant, and is mounted on the upper side of the container body 12A of the sealed container 12 through the bracket 97. The coolant introduction pipe 92 is inserted into the accumulator 98 from the bottom, and the other end is opened in the accumulator 98 above.

Next, operation | movement of the rotary compressor 10 which has the above structure is demonstrated. When the stator winding 28 of the electric element 14 is energized through the terminal 20 and wiring not shown, the electric element 14 is driven to rotate the rotor 24. By this rotation, an unillustrated roller fitted to an eccentric part in the cylinder 38 formed integrally with the rotation shaft 16 eccentrically rotates the inside of the cylinder 38.

Thereby, only the refrigerant | coolant (refrigerant gas) of the gas isolate | separated from the liquid in the accumulator 98 enters into the refrigerant | coolant introduction pipe | tube 92 opened to the said accumulator 98 inside. The low pressure refrigerant gas entering the refrigerant introduction pipe 92 is sucked into the low pressure chamber side of the cylinder 38 of the rotary compression element 32 via a suction passage (not shown).

The refrigerant gas sucked into the low pressure chamber side of the cylinder 38 is compressed by the operation of the roller and the vane to be a refrigerant gas of high temperature and high pressure and discharged into the discharge noise chamber 62. The refrigerant gas discharged into the discharge noise chamber 62 is discharged into the sealed container 12 from the discharge hole formed in the cup member 63.

The high-temperature, high-pressure refrigerant gas discharged into the sealed container 12 passes through a gap formed between the stator 22 and the rotor 24, and the upper space in the sealed container 12 above the transmission element 14. Go to. At this time, the oil discharged together with the refrigerant gas into the sealed container 12, the oil separation plate 17 and the end cap 12B, etc. mounted on the tip of the rotating shaft 16 located above the transmission element 14, and the like. It collides and is separated from the refrigerant gas. Thereafter, the refrigerant gas is discharged to the outside from the refrigerant discharge pipe 96 formed in the end cap 12B.

On the other hand, the oil separated from the refrigerant gas in the upper portion in the sealed container 12 moves to the outer circumference of the sealed container 12 by centrifugal force by the rotation of the rotor 24, the stator 22 and the sealed container 12 The oil return passage (80) in between, the oil return passage (80) is lowered and returned to the oil reservoir of the bottom of the sealed container (12).

However, in the rotary compressor 10, the oil flows in the oil return passage 80 to return to the bottom oil reservoir, and is compressed by the rotary compression element 32 to be directed to the upper refrigerant discharge pipe 96. Since the flow of refrigerant gas is the opposite flow, the flow of the discharge of the refrigerant gas inhibits the flow of the oil to return to the oil reservoir and increases the amount of discharge to the outside or the oil level of the oil reservoir decreases, thereby insufficient oil. There was a fear of doing so.

In particular, as in this embodiment, the stator winding 28 of the stator 22 is a single-phase transmission element 14 consisting of two series of windings, a main winding 28A and an auxiliary winding 28B. 2), when inserted into the slot, as shown in FIG. 2, a gap is likely to occur in the coil end of each of the windings 28A and 28B, and is largely fitted to the main winding 28A and the auxiliary winding 28B, respectively. Part 29A, 29B arises. 5 shows a top view of a stator 122 of a conventional transmission element 114. Like the conventional stator 122 shown in FIG. 5, when the abutting portions 129A and 129A of the main winding 128A are disposed at positions corresponding to the cut portions 122A constituting the oil return passage, the rotary compression element The refrigerant gas which is discharged and tries to move upward through the gap between the stator and the rotor flows from the butt parts 129A and 129A to the oil return passage (incision 122A) through the gap between the auxiliary windings 128B. Easier As a result, oil return is remarkably inhibited by the flow of the coolant, and a problem arises in that the amount of oil discharge to the outside is further increased.

Similarly, even when the abutting portions 129B and 129B of the auxiliary winding 128B on the inner side of the main winding 128A are disposed at positions corresponding to the cutout portions 122A constituting the oil return passage, the refrigerant gas is abutting portion ( It easily flows from the 129B and 129B to the oil return passage (the cutout 122A) via the gap between the main winding 128A and the oil return is significantly inhibited by the flow of the refrigerant.

Therefore, in order to solve the problem that the oil return in the oil return passage 80 is inhibited by the flow of the refrigerant, the position where the butt portion of the coil end of the stator winding 28 is shifted from the range of the cutout portion 22A is removed. It shall be arranged in. Specifically, in the present embodiment, as shown in FIG. 3, the abutting portions 29A and 29A of the main winding 28A of the stator winding 28 are moved from the cutout portion 22A to the rotational direction of the rotor 24. It is supposed to arrange | position so that the butt | matching part 29A may be located between cut-out parts 22A and 22A with 45 degree shift | deviation. In this case, the abutment portions 29B, 29B of the auxiliary winding 28B are positioned approximately 90 degrees from the abutment portions 29A, 29A of the main winding 28A, that is, two abutting portions (2) of the main winding 28A. It is assumed that the straight line connecting 29A and 29A and the straight line connecting the two butting portions 29B and 29B of the auxiliary winding 28B are substantially orthogonal. Therefore, the abutting portions 29B and 29B of the auxiliary winding 28B are also located between the cutouts 22A and 22A.

Thus, by arranging the abutment portions 29B, 29B of the coil end of the stator winding 28 at a position shifted from the range of the cut-out portion 22A, the outer side from the abutment portions 29B, 29B (sealed container 12 side). The flow of the refrigerant gas to be flowed into the) is blocked by the inner surface of the sealed container 12 without the cutout 22A (ie, there is no gap between the sealed container 12 and the stator 22), Since the flow of the refrigerant gas which is to flow from 29A and 29A to the outside (side of the airtight container 12) can be blocked by the inner surface of the sealed container 12 without the cutout 22A, these butt portions 29A , 29B), the refrigerant gas hardly flows into the oil return passageway 80.

That is, the flow of oil passing through the oil return passage (80) is less likely to be inhibited by the flow of the refrigerant gas, and passes through the oil return passage (80) from the upper side in the sealed container (12) to return to the bottom oil reservoir. It is possible to secure the flow of oil. As a result, the amount of oil discharged to the outside of the rotary compressor 10 can be reduced, and a drop in the oil level of the oil reservoir can be prevented. For this reason, the problem that the rotary compressor 10 becomes in oil supply shortage can be eliminated, and the performance and reliability of the rotary compressor 10 can be improved.

In addition, in this embodiment, as shown in FIG. 3, the stator part 29A, 29A of the main winding 28A of the stator winding 28, and the abutment part 29B, 29B of the auxiliary winding 28B are stators. Although it is supposed to arrange | position to the position which becomes substantially intermediate between the cutouts 22A and 22A formed in the stator iron core 26 of 22, this invention arrange | positions the butt | matching part 29A, 29B of the coil end of the stator winding 28. As shown in FIG. What is necessary is just to arrange | position in the position shifted from the range of cutout 22A, It is not limited to the arrangement of FIG.

[Example 2]

Further, in the first embodiment, the oil return in the oil return passage 80 is arranged by arranging the respective engaging portions 29A, 29B of the coil end of the stator winding 28 at a position shifted from the range of the cutout 22A. Although the problem hindered by the flow of the refrigerant can be solved, as shown in FIG. 4, the oil return is achieved by closing the abutting portions 29A and 29B of the coil end of the stator winding 28 with the shielding member 70. The present invention is effective even if it solves the problem that oil return in the passage 80 is inhibited by the flow of the refrigerant. In addition, in FIG. 4, since the same code | symbol is attached | subjected to the said FIGS. 1-3, it shows the same or similar effect or operation, and abbreviate | omits description here.

The stator 22 of this embodiment shown in FIG. 4 respond | corresponds to the cutout part 22A in which the butt | matching part 29A, 29A of the main winding 28A comprises the oil return path similarly to the conventional arrangement shown in FIG. It is placed in one position. However, in this embodiment, the shielding member 70 is provided in the abutting part 29A, 29A of the main winding 28A, and the abutting part 29B, 29B of the auxiliary winding 28B, and is provided in the shielding member 70. As a result, the abutting portions 29A and 29A, the inner side (the rotation shaft 16 side) and the outer side (the sealing container 12 side) of the abutting portions 29B and 29B are closed. That is, the shielding member 70 of this embodiment is provided between the main winding 28A and the auxiliary winding 28B corresponding to each of the butting portions 29A and 29A and the butting portions 29B and 29B. This shielding member 70 should just be able to block | close each butt | matching part 29A, 29B. For example, the shielding member 70 is comprised by a thin plate-shaped member, and this is the inside of the butting part 29A, and Even if it installs between the main winding 28A and the auxiliary winding 28B which become the outer side of the butt | matching part 29B, it does not interfere. Moreover, each butt | matching part 29A, 29B is provided between the main winding 28A of the stator winding 28, and the auxiliary winding 28B, and the insulating paper which insulates between the main winding 28A and the auxiliary winding 28B. ), And the insulating paper is also effective as a structure that also serves as the shielding member (70).

As in the present embodiment, even when each of the mating portions 29A, 29B of the coil end of the stator winding 28 is closed by the shielding member 70, the respective mating portions 29A, 29B are prevented by the shielding member 70. Since it is possible to block the flow of the refrigerant gas to flow to the outside (closed container 12 side) from the), as in the above embodiment, there is a problem that the flow of oil passing through the oil return passage 80 is inhibited This can be avoided, and the oil level of the oil reservoir can be prevented from being lowered, thereby improving the performance and reliability of the rotary compressor 10.

In particular, in the case where the shielding member 70 is formed of insulating paper, a member is not easily provided to block each of the butting portions 29A and 29B, and a structure in which oil flow is not impeded by the existing insulating paper is easy. It is possible to make it. This makes it possible to suppress an increase in manufacturing cost.

In particular, in the vertical rotary compressor, in which the transmission element 14 is disposed above the rotary compression element 32 and the oil reservoir is formed at the bottom of the sealed container 12 as in the present embodiment, the shield member 70 is used. Is installed in each of the abutting portions 29A and 29B of the coil end below the stator winding 28, the problem that the refrigerant gas flows into the oil return passage 80 is avoided and the oil return passage 80 It is possible to secure a sufficient flow of oil to prevent the oil level of the oil reservoir to fall. This makes it possible to considerably suppress an increase in cost.

10 Rotary Compressors (Electric Compressors)
Base for 11 installation
12 airtight containers
12A container body
12B End Cap
12D mounting hole
14 Electric elements
16 axis of rotation
17 Oil Separator
18 oil pump
20 terminals
22 stator
22A incision
24 rotor
26 stator iron core
28 stator winding
28A main winding
28B auxiliary winding
29A butt joint of main winding
Butting part of 29B auxiliary winding
32 rotary compression element
38 cylinders
54 Upper support member
54A, 56A bearing
56 Lower support member
62 Discharge Noise Chamber
63 Cup members
70 shield
91 sleeve
92 Refrigerant introduction pipe
96 Refrigerant Discharge Tube
97 bracket
98 accumulator

Claims

delete

The electric element and the compression element driven by the electric element are housed in an airtight container, and the electric element is composed of a stator having a stator winding and a rotor rotating in the stator. In the electric compressor comprising an auxiliary winding disposed in the,
It is formed on the outer periphery of the stator and has an incision that constitutes an oil return passage between the sealed container, and is installed between the main winding and the auxiliary winding to close the butt portion of the coil end of the main winding and the auxiliary winding An electric compressor comprising a plate-shaped shielding member.

The method according to claim 3,
The shielding member is an electric compressor, characterized in that the insulating paper (絶緣紙) to insulate between the stator windings.

The method according to claim 3 or 4,
And the transmission element is disposed above the compression element, and an oil reservoir is formed at the bottom of the sealed container.

The method according to claim 5,
And the shielding member is provided at the butt portion of the coil end under the stator winding.