CN111480004A

CN111480004A - Compressor with a compressor housing having a plurality of compressor blades

Info

Publication number: CN111480004A
Application number: CN201880080054.XA
Authority: CN
Inventors: 南基善; 尹龙泰; 金钟烨
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2017-12-11
Filing date: 2018-11-08
Publication date: 2020-07-31
Anticipated expiration: 2038-11-08
Also published as: US20190178240A1; WO2019117471A1; KR102491596B1; EP3495659B1; EP3495659A1; CN111480004B; KR20190068782A

Abstract

Disclosed herein is a compressor having an improved oil supply structure. The compressor includes: a housing; a stator accommodated in the housing and including a stator core; a rotor rotatably disposed in an interior of the stator core; a bracket coupled to a lower portion of the stator core; a rotating shaft configured to rotate together with the rotor and having a cavity for lifting oil stored in the housing; a picker shaft received in the cavity; and a support member connected to the picker shaft to support the picker shaft, and the support member is coupled to the bracket or the stator core.

Description

Compressor with a compressor housing having a plurality of compressor blades

Technical Field

The present disclosure relates to a compressor having an improved oil supply structure.

Background

Generally, a compressor is a machine that receives power from an electric generator such as a motor or a turbine and compresses air, refrigerant, or other various operation gases to increase pressure. Compressors are widely used in household appliances or industrial machines such as refrigerators, air conditioners, and the like.

The compressors are classified into a reciprocating compressor, a rotary compressor, and a scroll compressor according to a compression method and a sealing structure.

The reciprocating compressor has a structure forming a compression space in which an operation gas is sucked or discharged between a piston and a cylinder to compress a refrigerant when the piston linearly reciprocates inside the cylinder.

The hermetic reciprocating compressor includes a compression mechanism for compressing a refrigerant by a reciprocating motion of a piston and an electric driving mechanism for driving the compression mechanism, wherein the compression mechanism and the electric driving mechanism are installed inside a single case.

The hermetic reciprocating compressor includes a shaft for transmitting a driving force of the electric driving mechanism to the compression mechanism. In a lower portion of the housing, oil for lubricating and cooling components of the respective mechanisms is stored, and the shaft includes an oil supply structure for lifting the oil to supply it to the components.

There are various oil supply structures, and in general, a centrifugal pump structure that supplies oil upward by centrifugal force of a shaft and a viscous liquid pump structure that supplies oil upward by viscosity of oil are used.

Specifically, the viscous liquid pump structure includes a rotary shaft having a cavity through which oil moves, a picker shaft accommodated in the cavity of the rotary shaft, and a support member for supporting the picker shaft.

Disclosure of Invention

Technical problem

Accordingly, it is an aspect of the present disclosure to provide a compressor including an improved oil supply structure for effectively lifting oil stored in a lower portion of a casing even when a rotating shaft rotates at a low Revolution Per Minute (RPM).

It is another aspect of the present disclosure to provide a compressor including an improved bracket or an improved stator core to which a support member for supporting a picker shaft is coupled.

Technical scheme

Additional aspects of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

According to an aspect of the present disclosure, there is provided a compressor including: a housing; a stator accommodated in the housing and including a stator core; a rotor rotatably disposed in an interior of the stator core; a bracket coupled to a lower portion of the stator core; a rotating shaft configured to rotate together with the rotor and having a cavity for lifting oil stored in the housing; a picker shaft received in the cavity; and a support member connected to the picker shaft to support the picker shaft, and the support member is coupled to the bracket or the stator core.

The stator may include an insulator disposed below the stator core, and the bracket may be made using a material having a higher strength than that of the material of the insulator.

The bracket may be made of steel.

The bracket may include a bracket main body and a coupling portion provided in the bracket main body and to which the support member is coupled.

The joint may include: a joint main body extending downward from the bracket main body; and an accommodation space provided in the joint main body and into which the support member is inserted.

The support member may include an insertion portion inserted in the receiving space.

The insertion portion inserted in the accommodation space may be positioned between the joint main body and the stator core.

The insertion portion inserted in the receiving space may be spaced apart from the holder main body.

The support member may further include an extension bent from the insertion portion, and the picker shaft may include a through portion through which the extension passes.

The extension part may include a first extension part bent downward from the insertion part and a second extension part bent from the first extension part and passing through the through part.

The stator core may include a coupling portion that is provided in an outer wall of the stator core, and the support member is coupled to the coupling portion.

The stator may include a stator coil, the stator core may include a core main body and a winding part extending inward from the core main body, the stator coil may be wound on the winding part, and the joining part may be provided in the core main body.

The stator core may include a plurality of unit cores stacked on each other, and the joint may include: a joint main body extending downward from a lowermost unit core of the plurality of unit cores; and an accommodation space provided in the joint main body and into which the support member is inserted.

The core body may include: a first core body to which the bracket is bonded; and a second core main body extending from the first core, and the joint may be provided in the second core main body.

The diameter of the receiving space may be equal to or less than three times the diameter of the support member.

Advantageous effects

Since the oil stored in the housing rises along the inner circumferential surface of the rotating shaft, the oil can be effectively supplied to the respective components even when the rotating shaft rotates at a low RPM.

Since the joint portion to which the support member for supporting the picker shaft is joined is provided at the bracket or the stator core having high strength, it is possible to prevent breakage or abrasion of the joint portion.

Drawings

These and/or other aspects of the present disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of a compressor according to an embodiment of the present disclosure;

fig. 2 is an exploded perspective view illustrating a coupling structure of a rotation shaft and a pickup shaft in a compressor according to an embodiment of the present disclosure;

FIG. 3 illustrates a structure for lifting oil in a compressor according to an embodiment of the present disclosure;

figure 4 is a perspective view showing a bottom of a support structure for a picker shaft in a compressor according to an embodiment of the present disclosure;

fig. 5 and 6 illustrate a bracket in a compressor according to an embodiment of the present disclosure;

fig. 7 and 8 illustrate a bracket in a compressor according to another embodiment of the present disclosure;

figure 9 is a perspective view showing a bottom of a support structure for a picker shaft in a compressor according to another embodiment of the present disclosure;

FIG. 10 illustrates a joint provided in a stator core in the compressor shown in FIG. 9;

figure 11 is a perspective view showing a bottom of a support structure for a picker shaft in a compressor according to another embodiment of the present disclosure; and

fig. 12 illustrates a coupling portion of a unit core provided in the compressor shown in fig. 11.

Detailed Description

The embodiments described in the present specification and the configurations shown in the drawings are only preferred embodiments of the present disclosure, and therefore, it should be understood that various modified examples that can replace the embodiments and drawings described in the present specification are possible at the time of filing this application.

Further, the same reference numerals or symbols shown in the drawings of the present specification denote members or components that perform substantially the same functions. Furthermore, the terminology used in the description is for the purpose of describing the embodiments of the present disclosure and is not intended to be limiting of the present disclosure.

It is to be understood that the singular includes plural referents unless the context clearly dictates otherwise. It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. The above terms are only used to distinguish one component from another component. For example, a first component discussed below could be termed a second component, and similarly, a second component could be termed a first component without departing from the teachings of the present disclosure.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the following description, the terms "front", "rear", "upper" and "lower" are defined based on the drawings, and the shapes and positions of the respective components are not limited by the terms.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Embodiments of the compressor according to the present disclosure relate to a hermetic reciprocating compressor, however, the present disclosure is not limited thereto.

Further, the compressor according to the present disclosure is used for various home appliances such as a refrigerator, a water purifier, and the like, however, the compressor 1 is not limited to be used for such home appliances.

Fig. 1 is a schematic cross-sectional view of a compressor according to an embodiment of the present disclosure. As shown in fig. 1, the compressor 1 may include a casing 10 forming an external appearance. The case 10 may be made of a metal material.

Generally, the housing 10 may be manufactured by plastic working a steel plate by a deep drawing method (deep drawing method) or the like. That is, the case 10 may be manufactured by welding two steel plate structures manufactured in a hemispherical shape, and a steel plate sheet of a hemispherical shape having a predetermined thickness may be manufactured using a pressing method.

The housing 10 may include an accommodation space 11 for accommodating components mounted in the interior of the compressor 1 in such a manner as to be spaced apart from the inner wall of the housing 10 by a predetermined distance, to prevent the components from contacting the housing 10.

The compressor 1 may comprise a frame 12 for fixing the components mounted in the interior of the shell 10. The compressor 1 may include a compression mechanism 20 mounted above the frame 12 and an electric drive mechanism 30 mounted below the frame 12 for driving the compression mechanism 20.

The compression mechanism 20 may include: a cylinder 21 forming a compression space of a refrigerant and fixed to the frame 12; and a piston 22 reciprocating inside the cylinder 21 to compress refrigerant.

The electric drive mechanism 30 may include a stator 100 fixed to the frame 12 and a rotor 31 rotating inside the stator 100.

The cylinder 21 may be made of an aluminum material. The aluminum material may be aluminum or an aluminum alloy. Since the aluminum material is a non-magnetic material, the magnetic flux generated in the rotor 31 may not be transmitted to the cylinder 21.

Therefore, the magnetic flux generated in the rotor 31 can be prevented from being transmitted to the cylinder 21 to leak to the outside of the cylinder 21.

The piston 22 may be made of an aluminum material as with the cylinder 21. Therefore, as with the cylinder 21, the magnetic flux generated in the rotor 31 can be prevented from being transmitted to the piston 22 to leak to the outside of the piston 22.

Since the piston 22 is made of the same material as the cylinder 21, the piston 22 can have almost the same thermal expansion coefficient as the cylinder 21.

Since the piston 22 has almost the same thermal expansion coefficient as the cylinder 21, the piston 22 may be deformed in almost the same amount as the cylinder 21 in the high temperature internal environment of the casing 10 when the compressor 1 is driven.

Therefore, when the piston 22 reciprocates inside the cylinder 21, the piston 22 can be prevented from interfering with the cylinder 21.

The rotor 31 may include a cavity 31 a. The stator 100 may include: a stator core 110, the stator core 110 corresponding to a fixed portion when the electric drive mechanism 30 is driven; a stator coil 130 (see fig. 4) is mounted in the interior of the stator core 110.

The stator core 110 may be made of a metal material, and may have a cylindrical shape. When a voltage is applied from a power source (not shown), the stator coil 130 may generate an electromagnetic force to perform an electromagnetic interaction with the stator core 110 and the rotor 31.

The electric drive mechanism 30 may include an insulator 120 disposed between the stator core 110 and the stator coil 130. The insulator 120 may prevent the stator core 110 from directly contacting the stator coil 130.

The insulator 120 may include an upper insulator 121 (see fig. 4) disposed on the stator core 110, and a lower insulator 122 disposed under the stator core 110.

The stator coil 130 may be wound together with the stator core 110, the upper insulator 121, and the lower insulator 122.

When the stator coil 130 directly contacts the stator core 110, the stator core 110 may interfere with the electromagnetic force generated from the stator coil 130. The insulator 120 may space the stator coil 130 from the stator core 110 by a predetermined distance.

The rotor 31 may be rotatably installed inside the stator core 110. The rotor 31 may include a magnet (not shown). When a voltage is applied to the rotor 31, the rotor 31 may be rotated by an electromagnetic interaction between the stator core 110 and the stator coil 130.

The compressor 1 may be vertically disposed to transmit the driving force of the electric drive mechanism 30 to the compression mechanism 20, and the compressor 1 includes a rotation shaft 40 rotatably supported by the shaft support portion 13 of the frame 12.

The rotation shaft 40 may be pressed in the cavity 31a of the rotor 31 and rotated together with the rotor 31.

On the rotating shaft 40, an eccentric portion 41 may be formed to be offset from a rotational central axis of the rotor 31, and the eccentric portion 41 may be connected to the piston 22 through a connecting rod 23.

Therefore, the rotational motion of the rotary shaft 40 can be converted into the linear motion of the piston 22 by the connecting rod 23. The connecting rod 23 may be made of a sintered alloy material.

Below the eccentric portion 41, a disk portion 42 may extend in a radial direction. Further, a thrust bearing 43 (refer to fig. 3) may be interposed between the disk portion 42 and the shaft support portion 13 to support the axial weight of the rotary shaft 40 while smoothly rotating the rotary shaft 40.

In the lower portion of the casing 10, oil for lubricating and cooling the respective components of the compressor 1 may be stored, and the oil may be lifted by the rotating shaft 40 to be supplied to the respective components.

The rotating shaft 40 may have a cavity 44 for lifting up oil stored in the housing 10 through an inner circumferential surface. The picker shaft 50 is insertable into the cavity 44.

The picker shaft 50 may be supported by a support member 60. Therefore, when the rotation shaft 40 rotates, the pickup shaft 60 may not rotate.

The compressor 1 may include a bracket 200 coupled to a lower portion of the stator core 110. The bracket 200 may support the stator core 110.

The support member 60 according to an embodiment of the present disclosure may be coupled to the bracket 200 or the stator core 110. The picker shaft 60 may be inserted into the cavity 44 and supported on the bracket 200 or stator core 110 by the support member 60.

The coupling structure of the support member 60 with the bracket 200 or the stator core 100 will be described in detail later.

Fig. 2 is an exploded perspective view illustrating a coupling structure of a rotating shaft and a pickup shaft in a compressor according to an embodiment of the present disclosure, and fig. 3 illustrates a structure for lifting oil in a compressor according to an embodiment of the present disclosure.

Hereinafter, a structure for lifting oil will be described in detail with reference to the accompanying drawings.

As shown in fig. 2 and 3, a spiral wing 51 may be formed in an outer circumferential surface of the pickup shaft 50 to lift the oil stored in the housing 10 together with an inner circumferential surface of the rotation shaft 40.

Accordingly, when the rotating shaft 40 rotates, the oil stored in the housing 10 may rotate in the rotating direction of the rotating shaft 40 due to viscosity with the rotating shaft 40 to ascend along the spiral wing 51 of the picker shaft 50.

In fig. 3, a denotes a rotation direction of the rotation shaft 40, and means that the rotation shaft 40 rotates in a clockwise direction when viewed from above the rotation shaft 40. Hereinafter, the rotation direction of the rotation shaft 40 will be described as the rotation direction of the rotation shaft 40 when viewed from above the rotation shaft 40. In fig. 3, B indicates the direction in which the oil rises.

When the rotation shaft 40 rotates in the clockwise direction, the oil stored in the housing 10 may rotate in the clockwise direction due to viscosity with the rotation shaft 40.

The oil rotating in the clockwise direction may ascend along the spiral wing 51 formed in the outer circumferential surface of the pickup shaft 50. That is, the centrifugal force generated by the rotation of the rotating shaft 40 may be converted into the lift force by the spiral wing 51, thereby lifting the oil.

At this time, as described above, although the rotating shaft 40 rotates, the picker shaft 50 and the spiral wing 51 may not rotate due to the support member 60.

As such, the compressor 1 according to the embodiment of the present disclosure may lift oil by the inner circumferential surface of the rotating shaft 40.

In the case of the structure of lifting the oil by the outer circumferential surface of the rotating shaft 40, the oil may be prevented from being raised due to the surface pressure of the shaft supporting part 13 (or the viscosity with the shaft supporting part 13), and accordingly, in order to lift the oil, it may be necessary to maintain a predetermined RPM of the rotating shaft 40.

The compressor 1 according to the embodiment of the present disclosure may raise oil even at low RPM because the lift oil is not subjected to the surface pressure from the shaft supporting part 13.

Further, for the same reason, since the compressor 1 can lift oil with a small centrifugal force, the diameter of the rotary shaft 40 can be reduced.

The picker shaft 50 may include a through portion 52, the through portion 52 protruding downward and a support member 60 coupled to the through portion 52. In the through portion 52, a through hole 53 through which the support member 60 passes may be formed.

The support member 60 may be a wire. The support member 60 may be a wire bent at a plurality of positions. The support member 60 can include an extension 61 that passes through the through-hole 53 of the picker shaft 50 and an insert 62 that is coupled to the bracket 200 (see fig. 1) or the stator core 110 (see fig. 1).

The extension portion 61 may include a first extension portion 61a bent downward from the insertion portion 61 and a second extension portion 61b bent from the first extension portion 61a and passing through the through portion 52.

The picker shaft 50 may be first coupled with the support member 60, and the support member 60 may be coupled with the bracket 200 or the stator core 110. The extension portion 61 of the support member 60 may be inserted into the through hole 53 of the pickup shaft 50, and then, the insertion portion 62 of the support member 60 may be coupled to the bracket 200 or the stator core 110.

At this time, the support member 60 may be made of a material having elasticity, such as a leaf spring. Therefore, when the support member 60 is coupled to the bracket 200 or the stator core 110, the support member 60 may be more or less widened.

After the support member 60 is coupled to the bracket 200 or the stator core 110, the support member 60 may be stably coupled to the bracket 200 or the stator core 110 by a restoring force.

Hereinafter, a structure in which the support member 60 is coupled to the bracket 200 or the stator core 100 will be described in detail.

Fig. 4 is a perspective view illustrating a bottom of a support structure of a picker shaft in a compressor according to an embodiment of the present disclosure, and fig. 5 and 6 illustrate a bracket in a compressor according to an embodiment of the present disclosure.

As shown in fig. 4 to 6, the bracket 200 may be disposed adjacent to the insulating member 120. The bracket 200 may be disposed adjacent to the lower insulator 122. The bracket 200 may be spaced apart from the lower insulator 122. The bracket 200 may be spaced outwardly from the lower insulator 122.

The bracket 200 may be coupled to the frame 12 with the stator core 110 located between the bracket 200 and the frame 12. The bracket 200 may be coupled to the frame 12 by a coupling member (not shown) passing through the stator core 110.

A plurality of the brackets 200 may be provided. The compressor 1 according to the embodiment of the present disclosure may include two brackets 200. However, the stand 200 may be constructed in various forms as long as it can combine and support components mounted in the interior of the housing 10.

The bracket 200 may include a bracket main body 210 and a first coupling hole 211 formed in the bracket main body 210 and coupled to the frame 12.

A plurality of first coupling holes 211 may be formed. The bracket 200 according to an embodiment of the present disclosure may include two first coupling holes 211, but is not limited thereto.

The bracket 200 may include a buffer portion 212, and a buffer member 220 for reducing vibration of the compressor 1 is coupled to the buffer portion 212. The bumper portion 212 may extend downward from the bracket body 210.

The buffer member 220 may be disposed under the cradling body 210.

A plurality of buffer portions 212 may be provided. The bracket 200 according to an embodiment of the present disclosure may include two bumper portions 212, but is not limited thereto.

Further, a plurality of bumper members 220 corresponding to the number of bumper portions 212 may be provided.

The bracket 200 may include a coupling portion 300, the coupling portion 300 being formed in the bracket main body 210 and the support member 60 being coupled to the coupling portion 300.

The supporter 200 may be made using a material having a higher strength than that of the material forming the insulating member 120. For example, the bracket 200 may be made of steel.

Accordingly, the compressor 1 according to the embodiment of the present disclosure may couple the support member 60 to the bracket 200, as compared to the case of coupling the support member 60 for supporting the picker shaft 50 to the insulator 120, thereby preventing the breakage and wear of the coupling portion 300 while further reinforcing the coupling of the support member 60.

The coupling portion 300 may be disposed at the center of the supporter main body 210.

The joint 300 may include: a coupling part main body 310 extending downward from the bracket main body 210; and an accommodating space 320 formed in the coupling body 310 and into which the support member 60 is inserted.

Since the combining part main body 310 is bent downward from the bracket main body 210 to form the receiving space 320, the combining part 300 may form a groove in a nearly "U" shape.

The insertion part 62 (see fig. 3) inserted in the accommodation space 320 may be positioned between the joint main body 310 and the stator core 110.

The area of the receiving space 320 may be greater than the sectional area of the support member 60, and may be equal to or less than three times the sectional area of the support member 60, but is not limited thereto.

The bonding portion 300 may be formed by applying a pressing method on the bracket main body 210.

Fig. 7 and 8 illustrate a bracket in a compressor according to another embodiment of the present disclosure. A stent 201 according to another embodiment of the present disclosure may have substantially the same structure as the stent 200 according to an embodiment of the present disclosure, except for the structure of the joint (400 in fig. 7).

As shown in fig. 7 and 8, the bracket 201 may include: a holder main body 210; and a first coupling hole 211 formed in the bracket main body 210 to couple the bracket 201 to the frame 12 (see fig. 4).

The bracket 201 may include a buffer portion 212, and a buffer member 220 (see fig. 4) for reducing vibration of the compressor 1 is coupled to the buffer portion 212. Further, the bumper portion 212 may be provided in a plurality of bumper portions 212 corresponding to the number of bumper members 220.

The bracket 201 may include a coupling portion 400, the coupling portion 400 being formed in the bracket main body 210 and the support member 60 (see fig. 4) being coupled to the coupling portion 400.

The bracket 201 may be made using a material having a higher strength than that of the material forming the insulating member 120 (see fig. 4). For example, the bracket 201 may be made of steel.

The coupling portion 400 may be disposed at the center of the supporter main body 210.

The joint 400 may include: a coupling part main body 410 extending downward from the bracket main body 210; and an accommodating space 420 formed in the coupling body 410 and into which the support member 60 is inserted.

The coupling part 400 may include a coupling part body 410 bent downward from the bracket body 210 and a receiving space 420 forming a hole in the coupling part body 410.

The insertion portion 62 (see fig. 3) inserted in the accommodation space 420 may be spaced apart from the stator core 110 (see fig. 4). The insertion part 62 (see fig. 3) inserted in the receiving space 420 may be spaced apart from the bracket main body 210.

The diameter of the receiving space 420 may be greater than the diameter of the support member 60, and may be equal to or less than three times the diameter of the support member 60, but is not limited thereto.

Figure 9 is a perspective view illustrating a bottom of a support structure for a picker shaft in a compressor according to another embodiment of the present disclosure. Fig. 10 shows a joint portion of a stator core provided in the compressor shown in fig. 9.

As shown in fig. 9 and 10, a bracket 202 according to another embodiment of the present disclosure may be disposed adjacent to the lower insulator 122. The standoff 202 may be spaced apart from the lower insulator 122. The standoffs 202 may be spaced outwardly from the lower insulator 122.

The bracket 202 may be coupled to the frame 12 with the stator core 110 positioned between the bracket 202 and the frame 12. The bracket 202 may be coupled to the frame 12 by a coupling member (not shown) passing through the stator core 110.

A plurality of brackets 202 may be provided. The bracket 202 according to another embodiment of the present disclosure may be constructed in two pieces, but is not limited thereto. However, the bracket 202 may be configured in various forms as long as it can combine and support components mounted in the interior of the housing 10 (see fig. 1).

The bracket 202 may include a buffer member 220 for reducing vibration of the compressor 1. A plurality of bumper members 220 may be provided. Two bumper members 220 may be included in each of the brackets 202 according to another embodiment of the present disclosure, but are not limited thereto.

The stator core 110 may include a coupling part 500, the coupling part 500 being formed in the stator core 110 and the support member 60 being coupled to the coupling part 500. The joint 500 may be provided in an outer wall of the stator core 110.

The coupling portion 500 may be disposed at one edge of the stator core 110.

The stator core 110 may be made using a material having a higher strength than that of the material forming the insulator 120. For example, the stator core 110 may be an electromagnetic steel plate.

Therefore, by bonding the support member 60 to the stator core 110, it is possible to prevent the breakage and abrasion of the bonding portion 500 while further reinforcing the bonding of the support member 60, compared to the case where the support member 60 for supporting the picker shaft 50 is bonded to the insulator 120.

The stator core 110 may include a core main body 111 and a winding part 112 extending inward from the core main body 111, wherein a stator coil 130 (see fig. 4) is wound on the winding part 112.

The core main body 111 may have a circular shape, and a plurality of winding portions 112 may be provided. The coupling part 500 may be formed in the core main body 111.

The core main body 111 may include a first core main body 113 and a second core main body 114, the bracket 202 being coupled to the first core main body 113, the second core main body 114 extending from the first core main body 113.

The joining part 500 may be formed in the first core main body 113, but is not limited thereto.

The core main body 111 may include a second coupling hole 115, and a coupling member (not shown) to be coupled to the frame 12 (see fig. 4) passes through the second coupling hole 115.

A plurality of second coupling holes 115 may be provided. The core main body 111 according to another embodiment of the present disclosure may include four second coupling holes 115, but is not limited thereto.

The stator core 110 may include a plurality of unit cores 110a stacked on one another. At least a portion of the plurality of unit cores 110a may include unit coupling parts 500 a. Since the plurality of unit cores 110a are stacked to form the stator core 110, the plurality of unit coupling parts 500a may form the coupling part 500.

The plurality of unit cores 110a including the unit coupling parts 500a forming the coupling part 500 may be disposed under a plurality of different unit cores 110a, but is not limited thereto.

The coupling part 500 may include a groove into which the support member 60 is inserted. The insertion portion 62 inserted in the coupling portion 500 may be positioned on the bracket 202.

The bracket 202 may cover the open side of the coupling portion 500.

The area of the coupling part 500 may be greater than the sectional area of the support member 60, and may be equal to or less than three times the sectional area of the support member 60, but is not limited thereto.

Figure 11 is a perspective view illustrating a bottom of a support structure for a picker shaft in a compressor according to another embodiment of the present disclosure. Fig. 12 illustrates a coupling portion of a unit core provided in the compressor shown in fig. 11.

As shown in fig. 11 and 12, a bracket 202 according to another embodiment of the present disclosure may be disposed adjacent to the lower insulator 122. The standoff 202 may be spaced apart from the lower insulator 122. The bracket 202 may be spaced outwardly from the lower insulator 122.

The bracket 202 may be combined with the frame 12 (see fig. 4), and the stator core 110 is located between the bracket 202 and the frame 12. The bracket 202 may be coupled to the frame 12 by a coupling member (not shown) passing through the stator core 110.

The bracket 202 may include a buffer member 220 for reducing vibration of the compressor 1. A plurality of bumper members 220 may be provided. The cradles 202 according to another embodiment of the present disclosure may include two bumper members 220 for each cradle 202, but is not limited thereto.

The stator core 110 may include a coupling portion 600, the coupling portion 600 being formed in the stator core 110 and the support member 60 being coupled to the coupling portion 600. The joint 600 may be formed in the outer wall of the stator core 110.

The core main body 111 may have a circular shape, and a plurality of winding portions 112 may be provided. The coupling portion 600 may be formed in the core main body 111.

The core main body 111 may include a first core main body 113 and a second core main body 114, the bracket 202 being coupled to the first core main body 113, the second core main body 114 extending from the first core main body 113. The joint 600 may be formed in the second core main body 114, but is not limited thereto.

The core main body 111 may include a second coupling hole 115, and a coupling member (not shown) to be coupled to the frame 12 passes through the second coupling hole 115.

The stator core 110 may include a plurality of unit cores 110a stacked on one another.

The junction 600 may be formed in the lowermost unit core 110a among the plurality of unit cores 110 a. The joint 600 may include a joint main body 610 extending downward from the lowermost unit core 110a of the plurality of unit cores 110a and an accommodation space 620 formed in the joint main body 610 and into which the support member 60 is inserted.

Since the junction main body 610 is bent downward from the lowermost unit core 110a of the plurality of unit cores 110a to form the receiving space 620, the junction 600 may form a groove in a nearly "U" shape.

Another unit core 110a adjacent to the lowermost unit core 110a among the plurality of unit cores 110a may be stacked on the lowermost unit core 110a to cover one side of the receiving space 620.

The receiving space 620 may be opened in both the front and rear directions in which the insertion portion 62 (refer to fig. 3) is inserted. Accordingly, the combining part 600 may form a hole, but is not limited thereto.

The insertion part 62 inserted into the receiving space 620 may be located between the plurality of unit cores 110 a.

The area of the receiving space 620 may be greater than the sectional area of the support member 60, and may be equal to or less than three times the sectional area of the support member 60, but is not limited thereto.

Although a few embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

Claims

1. A compressor, comprising:

a housing;

a stator accommodated in the housing and including a stator core;

a rotor rotatably disposed in an interior of the stator core;

a bracket coupled to a lower portion of the stator core;

a rotating shaft configured to rotate together with the rotor and having a cavity for lifting oil stored in the housing;

a picker shaft received in the cavity; and

a support member connected to the picker shaft to support the picker shaft, and the support member is coupled to the bracket or the stator core.

2. The compressor of claim 1,

the stator includes an insulator disposed below the stator core, and

the bracket or the stator core is made of a material having a higher strength than that of the material of the insulator.

3. The compressor of claim 1, wherein said bracket is made of steel.

4. The compressor of claim 1, wherein the bracket includes a bracket main body and a coupling portion, the coupling portion being provided in the bracket main body and the support member being coupled to the coupling portion.

5. The compressor of claim 4, wherein the coupling portion comprises: a joint main body extending downward from the bracket main body; and an accommodation space provided in the joint main body and into which the support member is inserted.

6. The compressor of claim 5, wherein the support member includes an insertion portion inserted in the receiving space.

7. The compressor of claim 6, wherein the insertion portion inserted in the accommodation space is positioned between the coupling portion main body and the stator core.

8. The compressor of claim 6, wherein the insertion portion inserted in the receiving space is spaced apart from the bracket main body.

9. The compressor of claim 6, wherein the support member further includes an extension bent from the insertion portion, and the pickup shaft includes a through portion through which the extension passes.

10. The compressor of claim 9, wherein the extension portion includes a first extension portion bent downward from the insertion portion and a second extension portion bent from the first extension portion and passing through the through portion.

11. The compressor of claim 1, wherein the stator core includes a joint portion provided in an outer wall of the stator core, and the support member is joined to the joint portion.

12. The compressor of claim 11,

the stator includes a stator coil that is provided with a plurality of stator slots,

the stator core includes:

a core body; and

a winding portion extending inwardly from the core main body,

the stator coil is wound on the winding part, and

the bonding portion is provided in the core main body.

13. The compressor of claim 11,

the stator core includes a plurality of unit cores stacked on each other, and

the joint portion includes:

a joint main body extending downward from a lowermost unit core of the plurality of unit cores; and

an accommodating space provided in the joint main body and into which the support member is inserted.

14. The compressor of claim 12,

the core main body includes:

a first core body to which the bracket is bonded; and

a second core main body extending from the first core and

the joint is provided in the second core main body.

15. The compressor of claim 5, wherein a diameter of the receiving space is equal to or less than three times a diameter of the support member.