KR20190068782A - Compressor - Google Patents

Abstract

Provided is a compressor including an improved oil supply structure. The compressor comprises: a case; a stator including a stator core stored in the case and an insulator disposed in the lower portion of the stator core; a rotor configured to be rotated inside the stator; a bracket coupled to the lower portion of the stator core for the bracket to be in close contact with the insulator; a rotary shaft rotating along with the rotor and having a hollow portion to raise oil stored in the case; a pickup shaft stored in the hollow portion; and a support member connected to the pickup shaft to support the pickup shaft and coupled to the bracket or the stator core.

Description

COMPRESSOR

The present invention relates to a compressor comprising an improved lubrication structure.

Generally, a compressor is a mechanical device that receives power from a power generating device such as a motor or a turbine and compresses air, refrigerant or various other operating gases to increase the pressure. It is widely used in household appliances such as a refrigerator and an air conditioner, Can be used.

Compressors can be divided into reciprocating compressors, rotary compressors and scroll compressors depending on the compression type and the sealing structure.

The reciprocating compressor has a structure in which a compression space in which a working gas is sucked and discharged is formed between the piston and the cylinder, thereby compressing the refrigerant while linearly reciprocating the piston inside the cylinder.

The hermetic reciprocating compressor includes a compression mechanism for compressing the refrigerant through the reciprocating motion of the piston and a transmission mechanism for driving the compression mechanism. The compression mechanism and the transmission mechanism can be installed inside a single case.

The hermetic reciprocating compressor may include a shaft for transmitting the driving force of the transmission mechanism to the compression mechanism. In the lower part of the case, oil for lubrication and cooling of the components of each mechanism is stored, and the shaft is provided with an oil supply structure for supplying oil to each component by raising the oil.

The lubrication structure may be variously configured. In general, the lubrication structure may include a centrifugal pump structure for supplying the oil to the upper portion by the centrifugal force of the shaft and a viscous pump structure for supplying the oil to the upper portion by the viscous force of the oil.

In particular, the viscous pump structure may include a rotating shaft having a hollow portion through which the oil can move, a pickup shaft accommodated in the hollow portion of the rotating shaft, and a supporting member for supporting the pickup shaft.

The present invention discloses a compressor including an improved lubrication structure to efficiently raise the oil stored in the lower portion of the case even when the rotary shaft rotates at low RPM.

The present invention discloses a compressor that includes an improved bracket or stator core to engage a support member for supporting a pickup shaft.

A compressor according to an aspect of the present invention includes a case, a stator including a stator core accommodated in the case and an insulator disposed under the stator core, a rotor rotatable inside the stator, A rotation shaft rotatable with the rotor and having a hollow portion for raising the oil stored in the case, a pickup shaft accommodated in the hollow portion, and a pick-up shaft accommodated in the hollow portion, And a support member connected to the shaft and coupled to the bracket or the stator core.

The material of the bracket or the stator core may have a greater strength than the material of the insulator.

The bracket may comprise steel.

The bracket may include a bracket body and a coupling portion provided on the bracket body so that the support member is coupled to the bracket body.

The coupling portion may include a coupling portion body extending downward from the bracket body and a receiving portion provided on the coupling portion body to insert the supporting member.

The support member may include an insertion portion configured to be inserted into the receiving portion.

The inserting portion inserted into the accommodating portion may be positioned between the engaging portion body and the stator core.

The insertion portion inserted into the receiving portion may be spaced apart from the bracket body.

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

The extending portion may include a first extending portion bent downward from the inserting portion and a second extending portion bent from the first extending portion and penetrating the penetrating portion.

The stator core may include an engaging portion provided on an outer wall of the stator core to engage with the supporting member.

The stator core includes a core body and a winding portion extending inward from the core body and wound around the stator coil, and the coupling portion may be provided on the core body.

Wherein the stator core includes a plurality of unit cores to be stacked, the engaging portion includes an engaging portion body extending downward from a unit core of the lower one of the plurality of unit cores, And may include a receiving portion.

The core body may include a first core body to which the bracket is coupled and a second core body that extends from the first core body, and the coupling unit may be provided on the second core body.

The diameter of the receiving portion may be three times or less the diameter of the supporting member.

According to another aspect of the present invention, there is provided a compressor including a casing, a stator core accommodated in the casing, a rotor rotatably disposed inside the stator core, a bracket coupled to a lower portion of the stator core, A rotation shaft having a hollow portion for raising the oil stored in the case, a pickup shaft coupled to the hollow portion and supported by the bracket or the stator core, and an extension portion coupled to the pickup shaft to support the pickup shaft, And a support member having an extension portion bent from the extension portion and inserted into the bracket or the stator core.

The bracket may include a bracket body and a coupling portion extending downward from the bracket body and adapted to receive the insertion portion.

The stator core may include a coupling portion provided on an outer wall of the stator core to insert the insertion portion.

According to another aspect of the present invention, there is provided a compressor including a stator, a rotor rotatable inside the stator, a bracket coupled to a lower portion of the stator, a rotating shaft rotating together with the rotor, And a support member coupled to the pick-up shaft and coupled to the pick-up shaft to support the pick-up shaft.

The bracket may include a coupling portion to which the support member is inserted.

According to the present invention, the oil stored in the case rises through the inner circumferential surface of the rotary shaft, so that even when the rotary shaft rotates at low RPM, oil can be efficiently supplied to each component.

According to the present invention, the coupling portion to which the support member for supporting the pickup shaft is coupled is provided in the high-strength bracket or the stator core, so that the occurrence of breakage and wear of the coupling portion can be prevented.

1 is a schematic cross-sectional view of a compressor according to an embodiment of the present invention.
2 is an exploded perspective view showing a coupling structure of a rotary shaft and a pickup shaft in a compressor according to an embodiment of the present invention.
3 is a view showing a rising structure of oil in a compressor according to an embodiment of the present invention.
4 is a rear perspective view showing a structure of a pickup shaft supporting structure in a compressor according to an embodiment of the present invention.
5 and 6 are views showing brackets in a compressor according to an embodiment of the present invention.
7 and 8 are views showing a bracket in a compressor according to another embodiment of the present invention.
9 is a rear perspective view showing a structure of a pickup shaft supporting structure in a compressor according to another embodiment of the present invention.
Fig. 10 is a view showing a coupling portion provided in the stator core in the compressor shown in Fig. 9. Fig.
11 is a rear perspective view showing a support structure of a pickup shaft in a compressor according to another embodiment of the present invention.
Fig. 12 is a view showing a coupling portion provided in the unit core in the compressor shown in Fig. 11. Fig.

It is to be understood that both the embodiments described herein and the arrangements shown in the drawings are only a preferred embodiment of the disclosed invention and that at the time of filing of the present application, have.

In addition, the same reference numerals or signs shown in the respective figures of the present specification indicate components or components performing substantially the same function. Also, the terms used herein are used to illustrate the embodiments and are not intended to limit and / or limit the disclosed invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ", or" having ", and the like, designate the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof.

Accordingly, it is not intended to exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

It is also to be understood that terms including ordinals such as " first ", "second ", and the like used herein may be used to describe various components, but the components are not limited by the terms, It is used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The term "and / or" includes any combination of a plurality of related items or any of a plurality of related items.

It should be noted that the terms "front", "rear", "upper" and "lower" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by this term .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. One embodiment of the compressor 1 according to the present invention is directed to a hermetic reciprocating compressor, but the present invention is not limited thereto.

In addition, the compressor 1 according to the present invention can be used in various household appliances such as a refrigerator and a water purifier, and can be mainly used in a refrigerator, but is not limited thereto.

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

Generally, the case 10 can be manufactured by plastic working a steel sheet by a deep drawing method or the like. That is, the case 10 may be manufactured by welding two steel plate structures formed in a hemispherical shape, and a press method may be used to manufacture a steel plate having a predetermined thickness in a hemispherical shape.

The case 10 may include a receiving space 11 that is provided to receive a component therein with a certain distance from the component to prevent contact with the component entering the interior of the compressor 1 have.

The compressor (1) may include a frame (12) for fixing components inside the case (10). The compressor 1 may include a compression mechanism section 20 provided on the upper side of the frame 12 and a transmission mechanism section 30 provided below the frame 12 for driving the compression mechanism section 20.

The compression mechanism 20 may include a cylinder 21 that forms a compression space for the refrigerant and is fixed to the frame 12 and a piston 22 that moves in and out of the cylinder 21 and compresses the refrigerant.

The transmission mechanism unit 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. The magnetic flux generated in the rotor 31 may not be transmitted to the cylinder 21 due to the aluminum material which is a non-magnetic material.

Therefore, it is possible to prevent the magnetic flux generated in the rotor 31 from being transmitted to the cylinder 21 and leaking to the outside of the cylinder 21.

The piston 22 may be made of an aluminum material, such as the cylinder 21. Therefore, like the cylinder 21, it is possible to prevent the magnetic flux generated in the rotor 31 from being transmitted to the piston 22 and leaking to the outside of the piston 22.

Since the piston 22 is made of the same material as the cylinder 21, it can have a thermal expansion coefficient substantially equal to that of the cylinder 21.

The piston 22 can be thermally deformed by almost the same amount as the cylinder 21 in the internal environment of the high temperature case 10 when the compressor 1 is driven.

 Therefore, it is possible to prevent the interference between the piston 22 and the cylinder 21 during the reciprocating movement of the piston 22 in the cylinder 21.

The rotor 31 may include a hollow 31a. The stator 100 may include a stator core 110 corresponding to a fixed portion of the transmission mechanism 30 during operation and a stator coil 130 (see Fig. 4) mounted inside the stator core 110 .

The stator core 110 is made of a metal material and can have a substantially cylindrical shape. The stator coil 130 generates an electromagnetic force when a voltage is applied from a power supply unit (not shown) to perform electromagnetic interaction with the stator core 110 and the rotor 31.

The transmission mechanism unit 30 may include an insulator 120 disposed between the stator core 110 and the stator coil 130. The insulator 120 can prevent direct contact between the stator core 110 and the stator coil 130. [

The insulator 120 may include an upper insulator 121 (see FIG. 4) disposed at an upper portion of the stator core 110 and a lower insulator 122 disposed at a lower portion of 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 is in direct contact with the stator core 110, the generation of electromagnetic force from the stator coil 130 may be hindered. The insulator 120 can separate the stator core 110 and the stator coil 130 from each other by a predetermined distance.

The rotor 31 may be rotatably mounted inside the stator core 110. The rotor 31 may be provided with a magnet (not shown). The rotor 31 can rotate through electromagnetic interaction with the stator core 110 and the stator coil 130 when a voltage is applied.

The compressor 1 includes a rotary shaft 40 which is vertically arranged to transmit the driving force of the transmission mechanism 30 to the compression mechanism 20 and which is rotatably supported by the shaft support portion 13 of the frame 12 can do.

The rotary shaft 40 can be press-fitted into the hollow 31a of the rotor 31 and rotated together with the rotor 31. [

An eccentric portion 41 eccentric to the rotation center axis of the rotor 31 may be formed on the upper portion of the rotary shaft 40 and the eccentric portion 41 may be connected to the piston 22 by the connecting rod 23 have.

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

A disc portion 42 extending in the radial direction may be formed below the eccentric portion 41. A thrust bearing 43 (see FIG. 3) supporting the axial load of the rotating shaft 40 is provided between the disk portion 42 and the shaft supporting portion 13, .

In the lower portion of the case 10, oil for lubrication and cooling between the various components of the compressor 1 is stored, and oil can be raised through the rotary shaft 40 and supplied to the respective components.

The rotating shaft 40 may have a hollow portion 44 to raise the oil stored in the case 10 through the inner peripheral surface. A pick-up shaft 50 can be inserted into the hollow portion 44.

The pick-up shaft 50 can be supported by the support member 60. Therefore, even when the rotating shaft 40 is rotated, 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 can support the stator core 110.

The support member 60 may be coupled to the bracket 200 or the stator core 110 according to an embodiment of the present invention. The pickup shaft 60 is coupled to the hollow portion 44 and can be supported by the bracket 200 or the stator core 110 by the support member 60. [

A detailed description of the coupling structure of the support member 60 with the bracket 200 or the stator core 100 will be given below.

2 is an exploded perspective view showing a coupling structure of a rotary shaft and a pickup shaft in a compressor according to an embodiment of the present invention. 3 is a view showing a rising structure of oil in a compressor according to an embodiment of the present invention.

Hereinafter, the rising structure of the oil will be described in detail with reference to the drawings.

2 and 3, a spiral blade 51 for raising the oil stored in the case 10 together with the inner circumferential surface of the rotating shaft 40 may be formed on the outer circumferential surface of the pickup shaft 50.

Therefore, when the rotating shaft 40 rotates, the oil stored in the case 10 is rotated in the rotating direction of the rotating shaft 40 by the adhesive force to the rotating shaft 40, so that the spiral blade 51 of the pick- As shown in FIG.

3, A may mean that the rotating shaft 40 rotates in a clockwise direction when viewed from above the rotating shaft 40 as the rotating direction of the rotating shaft 40. Hereinafter, the rotation direction will be described on the basis of what is viewed from the upper side of the rotating shaft 40. In Fig. 3, B indicates the rising direction of the oil.

When the rotary shaft 40 rotates clockwise, the oil stored in the case 10 can be rotated clockwise by the adhesive force with the rotary shaft 40. [

The oil that rotates in the clockwise direction can rise along the spiral blade 51 formed on the outer circumferential surface of the pickup shaft 50. That is, the centrifugal force due to the rotation of the rotary shaft 40 is converted to the upward force by the spiral blade 51, and the oil can rise.

At this time, the pick-up shaft 50 and the spiral blade 51 may not be rotated by the support member 60 despite the rotation of the rotation shaft 40, as described above.

Thus, the compressor 1 according to the embodiment of the present invention can raise the oil through the inner circumferential surface of the rotating shaft 40.

In the case of a structure for raising the oil through the outer peripheral surface of the rotary shaft 40, the rise of the oil is obstructed by the surface pressure of the shaft support portion 13 (or adhesion force with the shaft support portion 13) The RPM of the rotating shaft 40 may need to be maintained.

In the compressor 1 according to the embodiment of the present invention, when the oil rises, the oil is not subjected to surface pressure from the shaft support portion 13, so that the oil can be raised even at low RPM through the rotary shaft 40.

Further, due to the same reason, the oil can be raised even with a small centrifugal force, so that the shaft diameter of the rotating shaft 40 can be reduced.

The pick-up shaft 50 may include a penetration portion 52 protruding downward to engage the support member 60. The penetrating portion 52 may be formed with a through hole 53 through which the supporting member 60 passes.

The support member 60 may be a wire. The support member 60 may be provided in a bent form several times. The support member 60 includes an extension portion 61 extending through the through hole 53 of the pickup shaft 50 and an insertion portion (not shown) coupled to the bracket 200 (see FIG. 1) or the stator core 110 62).

The extension portion 61 includes a first extension portion 61a that is bent downward from the insertion portion 62 and a second extension portion 61b that is bent from the first extension portion 61a and penetrates the penetration portion 52 .

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

At this time, the support member 60 may be formed of a material having elasticity like a leaf spring. Therefore, when the support member 60 is coupled to the bracket 200 or the stator core 110, the shape of the support member 60 may be somewhat widened.

After the support member 60 is coupled to the bracket 200 or the stator core 110, the support member 60 can be firmly coupled to the bracket 200 or the stator core 110 by a force to be restored to the original shape .

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

4 is a rear perspective view showing a structure of a pickup shaft supporting structure in a compressor according to an embodiment of the present invention. 5 and 6 are views showing brackets in a compressor according to an embodiment of the present invention.

As shown in FIGS. 4-6, the bracket 200 may be disposed adjacent the insulator 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 apart from the lower insulator 122.

The bracket 200 can be engaged with the frame 12 with the stator core 110 therebetween. The bracket 200 can be engaged with the frame 12 by a fastening member (not shown) passing through the stator core 110.

A plurality of brackets 200 may be provided. The compressor 1 according to an embodiment of the present invention may include two brackets 200. However, the present invention is not limited thereto, and the bracket 200 may be variously provided within a range for coupling and supporting the components inside the case 10. [

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

A plurality of first coupling holes 211 may be provided. The bracket 200 according to an embodiment of the present invention may include two first coupling holes 211. However, it is not limited thereto.

The bracket 200 may include a cushioning portion 212 to which a cushioning member 220 for insulating the vibration of the compressor 1 is coupled. The buffering portion 212 may extend downward from the bracket body 210.

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

The buffer part 212 may be provided in plural. The bracket 200 according to an embodiment of the present invention may include two buffer parts 212. However, it is not limited thereto.

The buffer members 220 may be provided in plural numbers corresponding to the number of buffer portions 212.

The bracket 200 may include a coupling part 300 provided on the bracket body 210 to couple the support member 60 thereto.

The material of the bracket 200 may have a greater strength than the material of the insulator 120. [ The bracket 200 may include steel.

Compared with coupling the support member 60 for supporting the pick-up shaft 50 to the insulator 120, the compressor 1 according to the embodiment of the present invention is constructed so that the support member 60 is supported by the bracket 200 It is possible to prevent breakage and abrasion of the coupling portion 300, and the coupling of the support member 60 can be further strengthened.

The engaging portion 300 may be disposed at the center of the bracket body 210.

The coupling part 300 may include a coupling part body 310 extending downward from the bracket body 210 and a receiving part 320 provided in the coupling part body 310 to insert the supporting member 60 .

The coupling part body 310 may extend from the bracket body 210 so as to bend downward to include the receiving part 320 so that the coupling part 300 can form a substantially U-shaped groove.

The insertion portion 62 (see FIG. 3) inserted into the receiving portion 320 may be positioned between the coupling portion body 310 and the stator core 110.

The area of the accommodating portion 320 may be equal to or larger than the area of the cross section of the support member 60 and be equal to or smaller than three times the area of the cross section of the support member 60. [ However, it is not limited thereto.

The engaging portion 300 may be formed on the bracket body 210 through a press method.

7 and 8 are views showing a bracket in a compressor according to another embodiment of the present invention. The bracket 201 according to another embodiment of the present invention is substantially the same as the structure of the bracket 200 according to an embodiment of the present invention and differs in the structure of the coupling part 400. [

7 and 8, the bracket 201 includes a first coupling hole 211 provided in the bracket body 210 to be coupled with the bracket body 210 and the frame 12 (see FIG. 4) can do.

The bracket 201 may include a buffer 212 to which a buffer member 220 (see FIG. 4) for isolating the vibration of the compressor 1 is coupled. The buffer members 220 may be provided in plural numbers corresponding to the number of buffer portions 212.

The bracket 201 may include a coupling portion 400 provided on the bracket body 210 to couple the support member 60 (see FIG. 4).

The material of the bracket 201 may have a greater strength than the material of the insulator 120 (see Fig. 4). The bracket 201 may include steel.

The engaging portion 400 may be disposed at the center of the bracket body 210.

The coupling part 400 may include a coupling part body 410 extending downward from the bracket body 210 and a receiving part 420 provided in the coupling part body 410 to insert the supporting member 60 .

The coupling part 400 may include a coupling part body 410 that is bent downward from the bracket body 210 and a receiving part 420 that is formed to form a hole in the coupling part body 410.

The insertion portion 62 (see FIG. 3) inserted into the accommodating portion 420 may be spaced apart from the stator core 110 (see FIG. 4). The insertion portion 62 (see FIG. 3) inserted into the receiving portion 420 may be spaced apart from the bracket body 210.

The diameter of the accommodating portion 420 may be equal to or larger than the diameter of the support member 60 and be equal to or smaller than three times the diameter of the support member 60. [ However, it is not limited thereto.

9 is a rear perspective view showing a structure of a pickup shaft supporting structure in a compressor according to another embodiment of the present invention. Fig. 10 is a view showing a coupling portion provided in the stator core in the compressor shown in Fig. 9. Fig.

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

The bracket 202 can be engaged with the frame 12 with the stator core 110 therebetween. The bracket 202 can be engaged with the frame 12 by a fastening 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 invention may be composed of two brackets. However, the present invention is not limited thereto, and the bracket 202 may be variously provided within the range for coupling and supporting the components inside the case 10 (see FIG. 1).

The bracket 202 may include a buffer member 220 for isolating the vibration of the compressor 1. The buffer member 220 may be provided in plurality. The bracket 202 according to another embodiment of the present invention may include two buffer members 220 in one bracket 202. However, it is not limited thereto.

The stator core 110 may include a coupling portion 500 provided in the stator core 110 to couple the support member 60 thereto. The engaging portion 500 may be provided on an outer wall of the stator core 110.

The engaging portion 500 may be provided at an edge of the stator core 110.

The material of the stator core 110 may be larger in strength than the material of the insulator 120. [ The stator core 110 may include an electromagnetic steel sheet.

Thus, as compared with coupling the support member 60 for supporting the pick-up shaft 50 to the insulator 120, the support member 60 is coupled to the stator core 110, And the occurrence of abrasion can be prevented, and the joining of the support member 60 can be further strengthened.

The stator core 110 may include a core portion 111 and a winding portion 112 extending inward from the core body 111 and winding the stator coil 130 (see Fig. 4).

The core body 111 may include a substantially circular shape, and the plurality of winding portions 112 may be provided. The coupling part 500 may be provided on the core body 111.

The core body 111 may include a first core body 113 to which the bracket 202 is coupled and a second core body 114 that extends from the first core body 113.

The coupling portion 500 may be provided on the first core body 113. However, it is not limited thereto.

The core body 111 may include a second coupling hole 115 through which a coupling member (not shown) for coupling with the frame 12 (see FIG. 4) is inserted.

The plurality of second coupling holes 115 may be provided. The core body 111 according to another embodiment of the present invention may include four second coupling holes 115. However, it is not limited thereto.

The stator core 110 may include a plurality of unit cores 110a to be stacked. At least some of the plurality of unit cores 110a may include a unit coupling portion 500a. The plurality of unit cores 110a are stacked to form the stator core 110 so that the stacked unit coupling portions 500a can form the coupling portion 500. [

The plurality of unit cores 110a including the unit coupling portion 500a forming the coupling portion 500 may be disposed below the other plurality of unit cores 110a. However, it is not limited thereto.

The engaging portion 500 may include a groove such that the supporting member 60 is inserted. The insertion portion 62 (see FIG. 3) inserted into the coupling portion 500 may be positioned on the upper portion of the bracket 202.

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

The area of the engaging portion 500 is not less than the area of the cross section of the supporting member 60 and may be not more than three times the area of the cross section of the supporting member 60. However, it is not limited thereto.

11 is a rear perspective view showing a support structure of a pickup shaft in a compressor according to another embodiment of the present invention. Fig. 12 is a view showing a coupling portion provided in the unit core in the compressor shown in Fig. 11. Fig.

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

The bracket 202 can be engaged with the frame 12 (see Fig. 4) with the stator core 110 therebetween. The bracket 202 can be engaged with the frame 12 by a fastening 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 invention may be composed of two brackets. However, the present invention is not limited thereto, and the bracket 202 may be variously provided within the range for coupling and supporting the components inside the case 10 (see FIG. 1).

The bracket 202 may include a buffer member 220 for isolating the vibration of the compressor 1. The buffer member 220 may be provided in plurality. The bracket 202 according to another embodiment of the present invention may include two buffer members 220 in one bracket 202. However, it is not limited thereto.

The stator core 110 may include a coupling portion 600 provided on the stator core such that the support member 60 is engaged. The engaging portion 600 may be provided on an outer wall of the stator core 110.

The material of the stator core 110 may be larger in strength than the material of the insulator 120. [ The stator core 110 may include an electromagnetic steel sheet.

The stator core 110 may include a core portion 111 and a winding portion 112 extending inward from the core body 111 and winding the stator coil 130 (see Fig. 4).

The core body 111 may include a substantially circular shape, and the plurality of winding portions 112 may be provided. The coupling part 600 may be provided on the core body 111.

The core body 111 may include a first core body 113 to which the bracket 202 is coupled and a second core body 114 that extends from the first core body 113. The coupling portion 600 may be provided on the second core body 114. However, it is not limited thereto.

The core body 111 may include a second coupling hole 115 through which a fastening member (not shown) for coupling with the frame 12 passes.

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

The stator core 110 may include a plurality of unit cores 110a to be stacked.

The coupling part 600 may be provided in the unit core 110a at the lowest one of the plurality of unit cores 110a. The coupling part 600 is provided on the coupling part body 610 such that the coupling part body 610 and the support member 60 extending from the lower unit core 110a of the plurality of unit cores 110a downwardly are inserted As shown in FIG.

The engaging portion body 610 extends from the unit core 110a of the lower unit among the plurality of unit cores 110a to bend downward to include the accommodating portion 620 so that the engaging portion 600 has a substantially U- Shaped groove can be formed.

The other unit core 110a adjacent to the unit core 110a at the lower one of the plurality of unit cores 110a may be laminated with the unit core 100a at the lower part to cover one side of the receiving portion 620 have.

The receiving portion 620 may be open in both the forward and backward directions in the direction in which the inserting portion 62 (see Fig. 3) is inserted. therefore. The engaging portion 600 may constitute a hole. However, it is not limited thereto.

The insertion portion 62 inserted into the receiving portion 620 may be disposed between the plurality of unit cores 110a.

The area of the accommodating portion 620 is not less than the area of the cross section of the support member 60 and not more than three times the area of the cross section of the support member 60. [ However, it is not limited thereto.

Although the technical idea of the present invention has been described above with reference to specific embodiments, the scope of the present invention is not limited to these embodiments.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. will be.

1: compressor 10: case
31: Rotor 40: Rotary shaft
44: hollow part 50: pick-up shaft
51: helical wing 52:
53: through hole 60: support member
61: extension part 62: insertion part
100: stator 110: stator core
110a: unit core 111: core body
112: winding part 113: first core body
114: second core body 120: insulator
121: upper insulator 122: lower insulator
130: stator coil 200, 201, 202: bracket
210: Bracket body 220: Buffer member
300, 400, 500, 600: coupling part 310, 410, 610: coupling part body
320, 420, 620:

Claims (20)

case;
A stator including a stator core accommodated in the case and an insulator disposed under the stator core;
A rotor rotatably disposed inside the stator;
A bracket coupled to a lower portion of the stator core adjacent to the insulator;
A rotating shaft rotating together with the rotor and having a hollow portion for raising the oil stored in the case;
A pickup shaft accommodated in the hollow portion; And
And a support member connected to the pick-up shaft to support the pick-up shaft and coupled to the bracket or the stator core. The method according to claim 1,
Wherein the material of the bracket or the stator core is larger in strength than the material of the insulator. The method according to claim 1,
Wherein the bracket comprises steel. The method according to claim 1,
Wherein the bracket includes an engaging portion provided on the bracket body so that the bracket body and the support member are engaged with each other. 5. The method of claim 4,
Wherein the coupling portion includes a coupling portion body extending downward from the bracket body and a receiving portion provided on the coupling portion body to insert the support member. 6. The method of claim 5,
And the support member includes an insertion portion configured to be inserted into the receiving portion. The method according to claim 6,
And the inserting portion inserted into the accommodating portion is located between the engaging portion body and the stator core. The method according to claim 6,
And the inserting portion inserted into the accommodating portion is spaced apart from the bracket body. The method according to claim 6,
Wherein the support member further includes an extension portion that is bent from the insertion portion,
Wherein the pick-up shaft includes a penetration portion through which the extension portion passes. 10. The method of claim 9,
And 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 penetration portion. The method according to claim 1,
Wherein the stator core includes an engaging portion provided on an outer wall of the stator core to engage with the supporting member. 12. The method of claim 11,
Wherein the stator core includes a core body and a winding portion extending inward from the core body and wound around the stator coil,
And the coupling portion is provided on the core body. 12. The method of claim 11,
Wherein the stator core includes a plurality of unit cores to be stacked,
Wherein the coupling portion includes a coupling portion body extending downwardly from a unit core at the bottom of the plurality of unit cores, and a receiving portion provided in the coupling portion body to insert the support member. 13. The method of claim 12,
Wherein the core body includes a first core body to which the bracket is coupled and a second core body that extends from the first core body,
And the coupling portion is provided in the second core body. 6. The method of claim 5,
And the diameter of the accommodating portion is not more than three times the diameter of the supporting member. case;
A stator core accommodated in the case;
A rotor rotatably disposed inside the stator core;
A bracket coupled to a lower portion of the stator core;
A rotating shaft rotating together with the rotor and having a hollow portion for raising the oil stored in the case;
A pickup shaft coupled to the hollow portion and supported by the bracket or the stator core; And
And a support member having an extension coupled with the pick-up shaft to support the pick-up shaft, and an insert that is bent from the extension and inserted into the bracket or the stator core. 17. The method of claim 16,
Wherein the bracket includes a bracket body and a coupling portion extending downward from the bracket body and adapted to receive the insertion portion. 17. The method of claim 16,
And the stator core includes a coupling portion provided on an outer wall of the stator core to insert the insertion portion. Stator;
A rotor rotatably disposed inside the stator;
A bracket coupled to a lower portion of the stator;
A rotating shaft that rotates together with the rotor;
A pickup shaft inserted and supported by the rotating shaft; And
And a support member connected to the pick-up shaft and coupled to the bracket to support the pick-up shaft. 20. The method of claim 19,
Wherein the bracket includes a coupling portion to which the support member is inserted.

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