Compressor

Abstract

A compressor is disclosed. The compressor comprises: a housing; a drive motor comprising a rotor rotatable about the axis of a shaft, and a stator provided so as to be fixed to the inner side of the housing and receive the rotor therein; and a compression unit for compressing a refrigerant by receiving power from the shaft. The stator comprises: a stator core comprising tooth portions provided such that a wire is wound thereon, and a rotor receiving space in the inner side thereof; and an insulator disposed on the outer side of the stator core in the axial direction so as to insulate the wire and the stator core. The insulator comprises: an inner rib provided on an inner end of the tooth portions; an outer collar portion guiding, together with the inner rib, so that the wire is wound on the tooth portions; and an insulator body provided between the inner rib and the outer collar portion. The insulator body comprises: a winding portion provided so that the wire is wound thereon; and a stepped portion protruding so as to form a step with respect to the winding portion, and being thicker than the winding portion, wherein the winding portion is provided such that a greater amount of the wire is wound thereon than on the stepped portion.

Description

compressor

[0001] The present invention relates to a compressor comprising an insulator.

[0002] A compressor is a mechanical device that receives power from a power generation device, such as an electric motor or turbine, and compresses air, refrigerants, or various other working gases to increase their pressure. Compressors are widely used in home appliances, such as refrigerators, air conditioners, and clothes dryers, as well as across various industries.

[0003] Types of compressors include reciprocating compressors, scroll compressors, and rotary compressors. In a reciprocating compressor, a compression space is formed between the piston and the cylinder for the intake and discharge of working gas, and the piston compresses the working gas by performing a linear reciprocating motion inside the cylinder. In a scroll compressor, a compression space is formed between the rotary scroll and the stationary scroll for the intake and discharge of working gas, and the rotary scroll compresses the working gas as it rotates along the stationary scroll. In a rotary compressor, a compression space is formed between the cylinder and the eccentrically rotating rolling piston for the intake and discharge of working gas, and the rolling piston compresses the working gas as it rotates eccentrically along the inner wall of the cylinder.

[0004] One aspect of the present invention provides a compressor with reduced axial thickness while maintaining the structural stability of the compressor's insulator.

[0005] One aspect of the present invention provides a compressor having a structure that increases the strength of the inner rib of the insulator of the compressor.

[0006] One aspect of the present invention provides a compressor with improved motor efficiency by reducing copper losses occurring in the coils of the compressor motor.

[0007] The technical problems to be solved in this document are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] A compressor according to the concept of the present invention comprises a housing, a rotor rotatable about the axis of a shaft, a driving motor including a stator fixed inside the housing and arranged to accommodate the rotor, and a compression unit that receives power from the shaft and compresses a refrigerant. The stator includes a tooth portion arranged to wind a wire, a stator core including a rotor receiving space inside, and an insulator arranged axially on the outside of the stator core to insulate the wire and the stator core. The insulator includes an inner rib arranged at the inner end of the tooth portion, an outer collar portion that guides the wire to be wound on the tooth portion together with the inner rib, and an insulator body arranged between the inner rib and the outer collar portion. The insulator body includes a winding portion arranged to wind the wire and a step portion protruding to form a step with respect to the winding portion and having a thickness greater than the thickness of the winding portion, and is arranged so that more of the wire is wound on the winding portion than on the step portion.

[0009] A compressor according to the concept of the present invention comprises a housing, a rotor rotatable about the axis of a shaft, a drive motor including a stator fixed to the inside of the housing and arranged to accommodate the rotor, and a compression unit that receives power from the shaft and compresses a refrigerant, wherein the stator includes a stator core including a tooth portion arranged for winding a wire and a rotor receiving space on the inside, and an insulator disposed axially on the outside of the stator core to insulate the wire and the stator core, wherein the insulator includes an inner rib arranged at the inner end of the tooth portion, an outer collar portion that guides the wire to be wound on the tooth portion together with the inner rib, and an insulator body arranged between the inner rib and the outer collar portion, wherein the insulator body includes a winding portion arranged for winding the wire and a stepped portion protruding to form a step with respect to the winding portion, wherein the thickness of the stepped portion is formed in the range of 1.5 mm to 3.5 mm, and the thickness of the winding portion It is arranged to be formed in the range of 0.8 mm to 2 mm.

[0010] FIG. 1 is an axial cross-sectional view of a compressor according to one embodiment of the present invention.

[0011] FIG. 2 is a perspective view of a drive motor of a compressor according to one embodiment of the present invention.

[0012] FIG. 3 is an exploded perspective view of a drive motor of a compressor according to one embodiment of the present invention.

[0013] FIG. 4 is a cross-sectional perspective view showing a disassembled part of the drive motor of a compressor according to one embodiment of the present invention.

[0014] Figure 5 is a combined diagram of Figure 4.

[0015] Figure 6 is a drawing illustrating Figure 5 with some configurations added.

[0016] FIG. 7 is an enlarged view of a portion of the side cross-sectional view of an insulator of a compressor according to one embodiment of the present invention.

[0017] FIG. 8 is a schematic diagram illustrating the appearance of a coil being wound in a compressor according to one embodiment of the present invention.

[0018] FIG. 9 is a schematic diagram illustrating the circumference of a coil in a compressor according to one embodiment of the present invention.

[0019] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0020] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0021] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0022] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0023] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0024] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from other corresponding components and do not limit the components in other aspects (e.g., importance or order).

[0025] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0026] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0027] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0028] Terms such as "upper side," "lower side," and "horizontal direction" used in the following description are defined based on the drawings, and the shape and location of each component are not limited by these terms.

[0029] Among the expressions used in the following description, "upper~", "lower~", etc., may be used to distinguish components by considering their relative positions, and such expressions may be replaced with expressions such as "first~", "second~".

[0030] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0031] FIG. 1 is an axial cross-sectional view of a compressor according to one embodiment of the present invention.

[0032] Referring to FIG. 1, a compressor (1) according to one embodiment of the present invention may include a compression unit (20) configured to compress a refrigerant. A compressor (1) according to one embodiment of the present disclosure may include a drive motor (30) provided to provide power to the compression unit (20). A compressor (1) according to one embodiment of the present disclosure may include a housing (10) that accommodates the compression unit (20) and the drive motor (30).

[0033] The housing (10) can form the exterior of the compressor (1). The housing (10) can be provided to accommodate the components of the compressor (1). Inside the housing (10), a receiving space can be formed to accommodate the compression unit (20) and the drive motor (30).

[0034] The housing (10) may be provided to receive oil. The housing (10) may be provided to store oil. The oil can reduce friction between the various members of the compressor (1) and lubricate the various members of the compressor (1).

[0035] A compressor inlet pipe (PI) may be connected to the inlet side of the housing (10). The housing (10) may be connected to an accumulator (15) by the compressor inlet pipe (PI). The compressor inlet pipe (PI) may be provided to guide refrigerant flowing from the accumulator (15) into the housing (10). The compressor inlet pipe (PI) is connected to a cylinder (21), and the refrigerant guided by the compressor inlet pipe (PI) may flow into a cylinder chamber (23) inside the cylinder (21).

[0036] A compressor discharge pipe (PO) may be connected to the discharge side of the housing (10). The compressor discharge pipe (PO) may discharge the refrigerant compressed within the housing (10). The discharge pipe (PO) may be provided to guide the refrigerant discharged from inside the housing (10) to outside the housing (10). The compressor discharge pipe (P0) may be provided to guide the refrigerant within the receiving space of the housing (10) to be discharged to outside the housing (10).

[0037] For example, the compressor inlet pipe (PI) can be connected to the lower part of the housing (10). For example, the compressor outlet pipe (PO) can be connected to the upper part of the housing (10).

[0038] For example, the housing (10) may include a base (11), a side frame (12), and a top cover (13). The base (11) may form the lower exterior of the housing (10). The side frame (12) may form the side wall of the housing (10). The top cover (13) may form the upper exterior of the housing (10). At least a portion of the base (11), the side frame (12), and the top cover (13) may be detachably connected. At least a portion of the base (11), the side frame (12), and the top cover (13) may be formed integrally.

[0039] The drive motor (30) can generate power. The drive motor (30) can generate rotational force. The drive motor (30) can convert electromagnetic force into mechanical rotational force.

[0040] The drive motor (30) may include a stator (100) fixed to a housing (10) and a rotor (31) rotatable to the stator (100). The stator (100) may include a stator core (110) and a coil (103) wound on the stator core (110). The rotor (31) may include a plurality of magnets.

[0041] For example, the drive motor (30) can be placed on the compression section (20).

[0042] The compressor (1) may include a shaft (50). The shaft (50) may be provided to transmit power generated from the drive motor (30) to the compression unit (20). The shaft (50) may be provided to connect the drive motor (30) and the compression unit (20). The shaft (50) may be connected to the rotor (31). The shaft (50) may be fixed to the rotor (31) and provided to rotate together with the rotor (31). The shaft (50) may be connected to the roller (22) of the compression unit (20). The shaft (50) may be provided to provide rotational force to the roller (22).

[0043] The shaft (50) can be extended along the vertical direction. The shaft (50) can be extended along the up-down direction. The shaft (50) can be extended along the direction of gravity. The shaft (50) can be extended along the height direction of the compressor (1).

[0044] FIG. 2 is a perspective view of a drive motor of a compressor according to one embodiment of the present invention. FIG. 3 is an exploded perspective view of a drive motor of a compressor according to one embodiment of the present invention.

[0045] Referring to FIGS. 2 and 3, the drive motor (30) of the compressor (1) may include a stator (100) fixed to the inside of the housing (10) and a rotor (31) rotatably received in the stator (100). The stator (100) may include a stator core (110), an insulator (120), and a coil (103). For example, the stator core (110) may be arranged to be fixed to the inside of the housing (10) by being placed within a stator frame (101) that is coupled to the housing (10). For example, the rotor (31) may be coupled to a shaft (50) and received inside the stator core (110), and may be arranged to be spaced apart from the inner surface of the stator core (110) by a predetermined distance. The rotor (31) may be arranged to have a spacing distance of preferably 0.3 mm to 0.7 mm from the inner surface of the stator core (110).

[0046] The electrical energy supplied to the stator (100) of the drive motor (30) can be converted into mechanical energy (rotational energy) of the rotor (31) and power can be transmitted to the compression part (20) through the shaft (50). When electrical energy is supplied to the coil (103) provided in the stator (100), the coil (103) can be provided to generate a rotating magnetic field to rotate the rotor (31). At this time, the coil (103) can be provided by winding a conductive wire (104) around the tooth part (111) of the stator core (110). At this time, the coil (103) can be provided to be insulated from the stator core (110).

[0047] The drive motor (30) may include a rotor (31) and a stator (100). Specifically, the stator (100) may include a stator core (110), a coil (103), an insulator (120) and an insulating film (117) provided to insulate the stator core (110) and the coil (103).

[0048] The rotor (31) may include a conductive rod so that it can be rotated by a rotating magnetic field generated by the coil (103). The rotor (31) may be arranged to rotate inside the stator core (110). The rotor (31) may be arranged to be coupled with a shaft (50), and the shaft (50) may be accommodated in a compression unit (20) to transmit power generated from the rotor (31) to the compression unit (20).

[0049] The stator core (110) may include a rotor receiving space (119) for receiving a rotor (31) and a plurality of teeth (111) on which a coil (103) is wound. The rotor receiving space (119) may be provided to penetrate the center of the stator core (110) in a vertical direction. The plurality of teeth (111) may be provided between the rotor receiving space (119) and the outer surface of the stator core (110). The plurality of teeth (111) may be provided at equal intervals along the edge of the rotor receiving space (119). A slot (116) formed between the plurality of teeth (111) may be provided to allow the wire (104) of the coil (103) to be wound. The slot (116) may be provided to penetrate the stator core (110) in a vertical direction. The slot (116) may be provided along the edge of the rotor receiving space (119). Accordingly, the arrangement of multiple teeth (111) and multiple slots (116) can be arranged in a circular shape.

[0050] The tooth portion (111) of the stator core (110) can be arranged so that a wire (104) is wound. A side rib (112) can be formed at one end of the tooth portion (111).

[0051] The tooth portion (111) can be provided in the shape of a roughly rectangular prism. The height of the tooth portion (111) can be provided with a length equal to the thickness of the stator core (110).

[0052] The side ribs (112) may be provided by extending from one end of the stator core (110) in the inner direction of the tooth portion (111). The side ribs (112) may be formed by protruding to both sides of the tooth portion (111). At this time, the multiple side ribs (112) formed on the multiple tooth portions (111) may be formed spaced apart from each other by a predetermined distance. At this time, the two protruding side ribs (112) may form a roughly curved surface together with one surface provided in the inner direction of the tooth portion (111). Accordingly, the tooth portion (111) and the side ribs (112) can form a cylinder-shaped rotor receiving space (119) inside the stator core (110).

[0053] The coil (103) may be formed by winding the wire (104) multiple times around the tooth portion (111). The wire (104) may be wound in an overlapping manner. An insulator (120) and an insulating film (117) may be provided between the wire (104) and the tooth portion (111) of the stator core (110) for electrical insulation. The insulator (120) may be attached to the upper and lower surfaces of the stator core (110), respectively. The insulator (120) may be provided to cover the upper and lower surfaces of the tooth portion (111) of the stator core (110). That is, the insulator (120) may be provided to insulate the tooth portion (111) and the wire (104) in the vertical direction by positioning it on the upper and lower surfaces of the tooth portion (111) of the stator core (110), respectively.

[0054] The insulator (120) may include an inner rib (124) provided at one end and the other end of the tooth portion (111), an outer collar portion (125), and a coupling projection (129) provided to be coupled to the stator core (110). The insulator (120) may include an insulating material. For example, the insulator (120) may include a plastic material.

[0055] The insulator (120) may be provided to cover the upper and lower surfaces of the stator core (110). The insulator (120) may be provided in a shape corresponding to the upper and lower surfaces of the stator core (110). For example, the insulator (120) may be provided in a circular shape overall.

[0056] Meanwhile, the insulator (120) may include an upper insulator (120a) and a lower insulator (120b) that are respectively coupled to the upper and lower surfaces of the stator core (110). At this time, the upper insulator (120a) and the lower insulator (120b) have almost identical configurations, so the common configurations below will be described as the configuration of a single insulator (120). At this time, the description of the insulator (120) can be substituted with the description of the upper insulator (120a). That is, expressions such as "upper" and "lower" or "higher" and "lower" used in the description of the upper insulator (120a) can be understood as expressions such as "lower" and "upper" or "lower" and "higher" for the same configuration of the lower insulator (120b). Furthermore, the application of such expressions can be applied in the same way to the stator core (110). In the following description, the configuration of the upper insulator (120a) is substituted with the description of the configuration of the insulator (120). Additionally, the description of the configuration of the upper insulator (120a) can be applied in the same way to the lower insulator (120b).

[0057] A space having a circular edge corresponding to the rotor receiving space (119) of the stator core (110) may be provided on the inner side of the insulator (120). A plurality of inner ribs (124) may be provided along the perimeter of the space provided on the inner side of the insulator (120). The plurality of inner ribs (124) may be provided so as to be spaced apart from each other by a predetermined distance. The inner ribs (124) may be provided in a shape of approximately a semicircle. The semicircular surface of the inner ribs (124) may be provided parallel to the curved surface formed by the side rib (112) of the stator core (110) and one surface of the inward-direction tooth portion (111). The inner ribs (124) may be provided to be connected to one end of the insulator body (121).

[0058] The insulator body (121) may be provided to be positioned on the tooth portion (111) of the stator core (110). That is, the insulator body (121) may be positioned at a location corresponding to the tooth portion (111). Accordingly, the insulator body (121) may be arranged in a circular shape. The insulator body (121) may be provided with a shape identical or similar to the upper surface of the tooth portion (111). The upper surface of the insulator body (121) may be provided with a size slightly larger than the upper surface of the tooth portion (111) or the same size as the upper surface of the tooth portion (111).

[0059] The outer collar portion (125) of the insulator (120) may be provided to form the outer edge of the insulator (120). The outer collar portion (125) may be provided in a roughly circular shape. An insulator body (121) may be connected to the inner surface of the outer collar portion (125). That is, the insulator body (121) may be provided between the inner rib (124) and the outer collar portion (125). The insulator body (121) may be provided so that the inner rib (124) and the outer collar portion (125) are connected.

[0060] The outer collar portion (125) may include a plurality of outer ribs (126) and a border member (127).

[0061] The outer rib (126) may be provided in a shape that protrudes vertically from the outer collar portion (125). The outer rib (126) may be provided as a plurality of outer ribs (126) along the circumference of the outer collar portion (125). The plurality of outer ribs (126) may be provided spaced apart from each other by a predetermined distance.

[0062] A rim member (127) may be provided to surround a plurality of outer ribs (126). The rim member (127) may be provided to support the plurality of outer ribs (126) from the outside of the plurality of outer ribs (126) toward the inside of the insulator (120). The rim member (127) may be provided in a roughly ring shape. The rim member (127) may be provided to support the lower portion of the plurality of outer ribs (126). In this case, the thickness of the rim member (127) may be provided to be thicker than the thickness of the insulator body (121). That is, the upper surface of the rim member (127) may be positioned higher than the upper surface of the insulator body (121).

[0063] That is, an inner rib (124) and an outer collar (125) may be provided at each end of the insulator body (121) located on the tooth portion (111). The inner rib (124) and the outer collar (125) may be formed to protrude vertically from the insulator body (121). The protruding length of the outer rib (126) of the outer collar (125) may be provided to be longer than the protruding length of the inner rib (124). The inner rib (124) and the outer collar (125) may be provided to guide and receive the wire (104) wound on the upper side of the insulator body (121).

[0064] The inner rib (124) may be provided to have the same cross-section as the side rib (112). The inner rib (124) may be formed to protrude vertically from the end of the tooth portion (111) where the side rib (112) is formed. At this time, the shape of the protruding inner rib (124) may be a semicircular shape.

[0065] The inner rib (124) and the outer collar portion (125) may be formed to protrude upward from the insulator (120). A coupling projection (129) may be formed on the lower surface of the insulator (120) to be coupled to the upper surface of the stator core (110). The coupling projection (129) may be provided to protrude from the lower surface of the insulator (120) toward the upper surface of the stator core (110).

[0066] The coupling projection (129) may be provided to be inserted into the slot (116) of the stator core (110). The coupling projection (129) may be provided to be received in the slot (116) and to come into contact with the inner surface of the slot (116). For example, the outer surface of the coupling projection (129) may be provided to come into contact simultaneously with the side of the tooth portion (111), the side of the side rib (112), and the inner surface of the stator core (110). That is, the coupling projection (129) may be provided in a shape corresponding to the slot (116).

[0067] Meanwhile, the coupling projection (129) may be positioned to correspond to the arrangement of the slot (116). At this time, the coupling projection (129) may be provided on each of the two sides of the insulator body (121). In other words, a portion of the coupling projection (129) may be provided to extend downward from both sides of the insulator body (121). Accordingly, the tooth portion (111) of the stator core (110) can be received between the plurality of coupling projections (129) on the lower surface of the insulator (120) by the coupling projections (129) provided on both sides of the insulator body (121).

[0068] The coupling projection (129) may be provided along the circumference of the slot (116). At this time, the coupling projection (129) may be provided so as not to interfere with the wound wire (104). For example, the coupling projection (129) may be provided in a rim shape having a predetermined thickness. Accordingly, the insulator (120) may be provided in a shape through which the inner part of the coupling projection (129) is penetrated. At this time, the shape formed by the inner surface of the coupling projection (129) may be provided to be identical to the shape formed by the inner surface of the slot (116).

[0069] The insulator (120) can be coupled to the upper surface of the stator core (110) by inserting the coupling projection (129) into the slot (116) of the stator core (110), and accordingly, the insulator (120) can be provided to cover the upper surface of the stator core (110). Accordingly, the insulator (120) can be provided between the tooth portion (111) of the stator core (110) and the wire (104) wound on the upper side of the tooth portion (111), so that the tooth portion (111) and the wire (104) are spaced apart in the vertical direction. That is, the insulator (120) can be provided so that the tooth portion (111) and the wire (104) are insulated in the vertical direction.

[0070] The aforementioned insulator (120) may refer to the upper insulator (120a). However, the configuration of the upper insulator (120a) may be applied in the same way to the description of the configuration of the lower insulator (120b).

[0071] That is, the upper and lower surfaces of the teeth portion (111) of the stator core (110) can be arranged to be insulated from the wire (104) by an insulator (120) that is coupled vertically to the stator core (110).

[0072] The side of the tooth portion (111) of the stator core (110) may be provided to be electrically insulated from the wire (104) by an insulating film (117). The insulating film (117) may be provided to be in contact with the side of the tooth portion (111) and may be provided between the side of the tooth portion (111) and the wire (104) wound in the slot (116). That is, the insulating film (117) may be provided so that the wire (104) wound on the side of the tooth portion (111) and the tooth portion (111) are spaced apart. Accordingly, the wire (104) wound on the side of the tooth portion (111) may be electrically insulated from the tooth portion (111).

[0073] An insulating film (117) may be provided to be received in a slot (116). An insulating film (117) may be provided to correspond to the inner surface of the slot (116). An insulating film (117) may be provided to be in contact with the inner surface of the slot (116). An insulating film (117) may be provided to be in contact with the inner surface of a coupling projection (129) received in the slot (116). That is, an insulating film (117) may be provided to be received inside the space formed by the slot (116) and the inner surface of the coupling projection (129). However, the shape of the insulating film (117) is not limited to this embodiment, and may be provided in various shapes so as to electrically insulate the side of the tooth portion (111) of the stator core (110) and the wire (104) wound in the slot (116) of the stator core (110).

[0074] The insulating film (117) may include an insulating material. For example, the insulating film (117) may include paper or PET material.

[0075] FIG. 4 is a cross-sectional perspective view showing a disassembled portion of the drive motor of a compressor according to an embodiment of the present invention. FIG. 5 is an assembly view of FIG. 4. FIG. 6 is a drawing showing FIG. 5 with some additional components added. FIG. 7 is an enlarged view showing a portion of the side cross-sectional view of an insulator of a compressor according to an embodiment of the present invention.

[0076] In the following description, for the convenience of explanation, configurations that are substantially identical or similar to those described with reference to FIGS. 2 and 3 may be omitted or briefly described.

[0077] Referring to FIGS. 4 to 7, the insulator (120) may be provided to be in contact with the upper surface and a portion of the side of the tooth portion (111) of the stator core (110). The upper surface of the tooth portion (111) may be provided to be in contact with the lower surface of the insulator body (121), and the upper side of the tooth portion (111) may be provided to be in contact with one surface of the coupling projection (129) of the insulator (120).

[0078] The stator core (110) can be provided so that a rim-shaped coupling projection (129) is seated inside the slot (116). For example, the inner surface of the slot (116) can be provided so that it is recessed outwardly by the thickness of the coupling projection (129) of the insulator (120). Accordingly, the slot (116) may include an end (113) on the upper side that corresponds to the shape of the coupling projection (129). That is, the side of the tooth portion (111) can be provided so that the upper end is recessed by the thickness of the coupling projection (129).

[0079] The connecting projection (129) of the insulator (120) may be provided in a rim shape having a predetermined thickness. The connecting projection (129) may be provided to extend to the side end of the inner rib (124). The connecting projection (129) may be provided to wrap around the upper side of the tooth portion (111).

[0080] The insulator (120) can be coupled to the stator core (110). The coupling projection (129) of the insulator (120) can be inserted into the slot (116) of the stator core (110). The tooth portion (111) of the stator core (110) contacts the lower side of the insulator body (121) and can be received between a plurality of coupling projections (129) provided on both sides of the insulator body (121). At this time, the side rib (112) can be wrapped by the coupling projection (129) extending to the lower side of the inner rib (124). Accordingly, the coupling projection (129) can be coupled to match the end portion (113) provided in the slot (116).

[0081] The insulator (120) may include a fixing groove for fixing the insulating film (117) so that the insulating film (117) is positioned on the side of the tooth portion (111). The inner rib (124) and the outer collar portion (125) of the insulator (120) may include a fixing groove for fixing the position of the insulating film (117). The inner rib (124) and the outer collar portion (125) may be provided to support the insulating film (117) in a vertical direction.

[0082] For example, the inner rib (124) of the insulator (120) may include fixed protrusions that are bent and protrude toward the outer direction of the insulator (120) at both ends. The fixed protrusions provided at both ends of the inner rib (124) may be provided so that the insulating film (117) is supported in a vertical direction at the ends of the side rib (112) of the stator core (110).

[0083] For example, the outer collar portion (125) of the insulator (120) may include a support member provided to support the insulating film (117) in a vertical direction. The support member may be formed in a connecting portion provided to connect a plurality of outer ribs (126) to each other. Specifically, the support member may be provided to pass over a portion of the edge of the inner circumference of the coupling projection (129) of the insulator (120), thereby allowing the insulating film (117) in contact with the inner circumference of the coupling projection (129) to be supported in a vertical direction.

[0084] Accordingly, the insulating film (117) can be fixed in position by being supported from both the upper and lower sides in the vertical direction by an insulator (120) coupled to the upper and lower surfaces of the stator core (110), and by contacting the inner circumference of the slot (116) in the horizontal direction.

[0085] At this time, the fixing projection of the inner rib (124) can support a portion provided in the inner direction relative to the insulator (120) of the insulating film (117) accommodated in the slot (116). The supporting member of the outer collar portion (125) can support a portion provided in the outer direction relative to the insulator (120) of the insulating film (117). Accordingly, the insulating film (117) can be stably placed inside the slot (116).

[0086] The insulating film (117) placed inside the slot (116) can be arranged to have a height approximately equal to the thickness of the stator core (110). In other words, the top of the insulating film (117) can be positioned at the same height as the upper surface of the upper insulator body (121a) or lower than the upper surface of the upper insulator body (121a). The bottom of the insulating film (117) can be positioned at the same height as the lower surface of the lower insulator body (121b) or higher than the lower surface of the lower insulator body (121b). Accordingly, the circumference of the coil (103) provided in the tooth portion (111) can be arranged so that, with respect to the vertical direction, it is affected only by the thickness of the stator core (110) and the thickness of the insulator body (121). A detailed description of the circumference of the coil (103) will be provided later through other drawings below.

[0087] Meanwhile, the coil (103) provided on the tooth portion (111) can be guided to be positioned on the tooth portion (111). In other words, the wire (104) wound on the tooth portion (111) can be supported so as not to extend beyond the tooth portion (111) along the longitudinal direction of the tooth portion (111).

[0088] More specifically, the wire (104) wound on the tooth portion (111) can be guided to be supported in the radial direction of the insulator (120) by the inner rib (124) and outer collar portion (125) of the insulator (120) and the side rib (112) of the tooth portion (111). For example, the wire (104) wound on the upper surface (or lower surface) of the tooth portion (111) can be guided by the inner rib (124) of the insulator (120) so as not to interfere with the rotor (31), and the wire (104) wound on the side of the tooth portion (111) can be guided by the side rib (112) of the stator core (110) so as not to interfere with the rotor (31). Accordingly, the wire (104) wound on the tooth portion (111) may not interfere with the rotor (31) located inside the stator core (110). In other words, the coil (103) provided on the tooth portion (111) may not come into contact with the rotor (31).

[0089] Meanwhile, the wire (104) may be provided to have strong tension to increase the number of times it is wound around the tooth portion (111). That is, the wire (104) wound around the tooth portion (111) may be provided to have strong tension in the longitudinal direction of the wire (104). Accordingly, the wire (104) wound around the tooth portion (111) multiple times may be supported in contact with each other, and the wire (104) wound around the tooth portion (111) multiple times may be provided to be compressed against each other in the radial direction. Accordingly, the coil (103) formed by winding the wire (104) having strong tension around the tooth portion (111) may be provided to have strong tension in the radial direction of the insulator (120). Accordingly, the inner rib (124) and the outer collar portion (125) provided to support the wire (104) in the insulator (120) may receive a strong load in the radial direction of the insulator (120).

[0090] At this time, the inner rib (124) can be damaged more easily by the tension of the coil (103) than the outer collar portion (125). For example, the outer collar portion (125) may be provided so that a plurality of outer ribs (126) are connected to each other, and at the same time, supported inwardly by a ring-shaped rim member (127) provided to surround the outer side of the outer ribs (126). Accordingly, the load that the outer ribs (126) can withstand may be limited to the load caused by the wire (104) wound at a position higher than the rim member (127). On the other hand, a plurality of inner ribs (124) may be provided so that they are spaced apart and not connected to each other. In addition, a support member such as that of the outer collar portion (125) may not be provided. Accordingly, the inner rib (124) can be arranged to fully receive the load from the coil (103) between the inner rib (124) and the insulator body (121). That is, the load between the inner rib (124) and the insulator body (121) can be arranged to be relatively greater than the load applied to the outer rib (126) of the outer collar part (125).

[0091] Accordingly, in order to increase the strength of the inner rib (124), the insulator body (121) may include a stepped portion (123) located between the insulator body (121) and the inner rib (124).

[0092] More specifically, the insulator body (121) may include a stepped portion (123) and a winding portion (122). The stepped portion (123) may be provided to be connected to the inner rib (124) to support the inner rib (124). A winding portion (122) in which most of the coil (103) is wound may be provided at a location excluding the stepped portion (123). That is, the insulator (120) may be provided in the order of the inner rib (124), the stepped portion (123), the winding portion (122), and the outer collar portion (125) along the radial direction of the insulator (120).

[0093] The stepped portion (123) may be provided to protrude vertically from the insulator body (121). That is, the stepped portion (123) may be provided to be stepped from the winding portion (122). Specifically, the stepped portion (123) may be divided into a curved portion connected to the inner rib (124), a flat portion where a portion of the coil (103) can be wound, and a portion forming a step from the winding portion (122). At this time, each portion may be formed integrally.

[0094] At this time, the area connected to the inner rib (124) and the area forming a step from the winding portion (122) can each be arranged such that the distance in the vertical direction from the insulator body (121) increases as it faces the inner side of the insulator (120). Accordingly, all parts of the step portion (123) can be arranged to be thicker than the winding portion (122). That is, the winding portion (122) can be arranged to have a smaller thickness than the step portion (123). In other words, in the insulator body (121), the thickness of the insulator body (121) (winding portion (122)) arranged in the outer direction can always be arranged to be smaller than the thickness of the insulator body (121) (step portion (123)) arranged in the inner direction. For example, in the insulator body (121), the thickness of the step portion (123) can be formed in the range of 1.5 mm to 3.5 mm, and the thickness of the winding portion (122) can be formed in the range of 0.8 mm to 2.0 mm.

[0095] The winding portion (122) on which most of the coil (103) is wound can be made thinner than the stepped portion (123), and accordingly, the total length of the wire (104) wound on one tooth portion (111) can be reduced. A detailed description of the length of the wire (104) included in the coil (103) will be provided later in the following drawings.

[0096] In the insulator (120), the insulator body (121) may be configured to increase the portion that is connected to and supported by the inner rib (124). As the portion supporting the inner rib (124) increases, the strength of the inner rib (124) may be increased, thereby improving the quality of the insulator (120). In other words, the structural stability of the insulator (120) may be increased. Accordingly, the process defect rate of the compressor (1) may be reduced.

[0097] For example, as the strength of the inner rib (124) is increased by the step portion (123) supporting the inner rib (124), the failure rate of the insulator (120) during the process can be reduced. Specifically, the failure rate of the inner rib (124) of the insulator (120) caused by the wire (104) that is wound quickly and strongly around the stator core (110) during the winding process of the coil (103) can be reduced, and accordingly, the failure rate of the insulator (120) during the process can be reduced.

[0098] However, the effect of increased structural stability of the insulator (120) is not limited to the process. For example, stability can also be increased when using the finished compressor (1).

[0099] More specifically, when the compressor (1) is in operation, the inner rib (124) of the insulator (120) may be continuously subjected to a load. Accordingly, the inner rib (124) of the insulator (120) may be bent and deformed toward the inner direction of the stator core (110) even if it is not damaged. In other words, the inner rib (124) may spread toward the inner direction of the stator core (110) due to the tension of the coil (103). As the inner rib (124) tilts toward the inner side of the stator core (110), interference may occur with the rotor (31) rotating in the center of the stator core (110). That is, the spread inner rib (124) may obstruct the rotation of the rotor (31), thereby reducing the motor efficiency of the compressor (1). Therefore, as the structural stability of the insulator (120) is increased by the step portion (123), the case where the motor efficiency decreases during compressor (1) operation can be prevented.

[0100] FIG. 8 is a schematic diagram illustrating the coil (103) being wound on the drive motor of a compressor according to one embodiment of the present invention. FIG. 9 is a schematic diagram for explaining the circumference of the coil in a compressor according to one embodiment of the present invention.

[0101] For convenience of explanation, the description of the structure of the insulator (120) and the stator core (110) can be referred to in FIGS. 4 to 7.

[0102] Referring to FIGS. 8 and 9, the insulator (120) can be configured to reduce copper loss of the wire (104) while ensuring structural stability. Specifically, the insulator body (121) can be configured to increase the strength of the insulator (120) while reducing copper loss of the wire (104) by designing the thickness of the stepped portion (123) and the winding portion (122) to be variable. A compressor (1) according to one embodiment of the present invention can be configured to improve motor efficiency.

[0103] More specifically, when the wire (104) forming the coil (103) has the same wire diameter (diameter of the wire (104)) and the same number of turns (number of times the wire (104) is wound around the tooth portion (111), the resistance of the coil (103) can be arranged to be proportional to the total length of the wire (104) forming the coil (103). Accordingly, as the length of the wire (104) forming the coil (103) is reduced, the resistance of the coil (103) can be reduced. As the resistance of the coil (103) is reduced, the loss in the motor is reduced, and the effect of improving motor efficiency can be obtained.

[0104] In the case of a coil (103) wound on the tooth portion (111) of a stator core (110), the circumference of the coil (103) can be increased by the thickness of the insulator (120) and the insulating film (117). That is, the length of the wire (104) per turn can be increased. As the length of the wire (104) increases, the resistance may increase. If the resistance increases, the motor efficiency may decrease. For example, the length per turn of the wire (104) can be briefly defined in terms of the thickness (d1) of the stator core (110), the thickness (d2) of the insulator body (121), and the distance (d3) between the two insulating films (117) provided on both sides of the tooth portion (111). At this time, the length per turn of the wire (104) can be expressed approximately as follows:

[0105] Wire (104) Length per turn = 2*d1 + 4*d2 + 2*d3 (1)

[0106] More specifically, the above-described formula (1) may represent the length per turn of a wire (104) wound to be in contact with an insulator body (121) and an insulating film (117). That is, it may represent the length per turn of a wire (104) wound in contact with a winding section (122) or a step section (123) of an insulator body (121), and may represent the minimum length per turn of a wire (104) wound on a winding section (122) or a step section (123). However, the length per turn of a wire (104) wound in an overlapping manner on a wound wire (104) that is not wound in contact with an insulator body (121) may also be affected by the length calculated by formula (1). For example, the length per turn of the overlapping wire (104) can be calculated by taking into account the number of overlapping wires (104) and the diameter value of the wire (104) in the value of formula (1). That is, the length per turn of the wire (104) can be arranged to decrease as the lengths of d1, d2, and d3 are reduced.

[0107] For example, the insulating film (117) may be provided to have a thickness thinner than that of the insulator (120). Accordingly, the length per turn of the wire (104) may be reduced by the length corresponding to d3, as the side of the stator core (110) is insulated from the wire (104) by the insulating film (117), compared to the case where the insulator (120) is provided to be insulated up to the side of the tooth portion (111) of the stator core (110). That is, the length per turn of the wire (104) may be reduced by providing the insulator (120) only on the upper and lower surfaces of the tooth portion (111). Accordingly, the copper loss of the wire (104) may be reduced.

[0108] For example, the length corresponding to d2 can be reduced by arranging the thickness of the insulator body (121) to be reduced. That is, by making the thickness of the insulator (120) thin, the length per turn of the wire (104) can be reduced.

[0109] However, if the insulator (120) is not extended to the side of the tooth portion (111) of the stator core (110) to provide insulation, or if the thickness of the insulator (120) is provided to be thin, the stability of the rigidity of the inner rib (124) provided in the insulator (120) may be reduced. Accordingly, the structural stability of the insulator (120) and the thickness of the insulator (120) (or the insulation structure of the tooth portion (111) of the stator core (110) through the insulator (120) and the insulating film (117)) can be considered together.

[0110] Specifically, the position, thickness, and length of the stepped portion (123) and the winding portion (122) of the insulator (120) can be designed in a way that reduces the total length of the wire (104) used in the coil (103) while maintaining the structural stability of the insulator (120).

[0111] The insulator body (121) may be configured to include a stepped portion (123) to reduce the length of the wire (104) used in the coil (103) while maintaining the structural stability of the insulator (120). For example, when designing the insulator body (121), the insulator body (121) may not be flat in all areas, but may be configured to be stepped in some areas.

[0112] Specifically, the insulator body (121) may include a relatively thin winding portion (122) and a relatively thick step portion (123). In this case, the step portion (123) may be provided in an area close to the inner rib (124). In other words, a thin winding portion (122) may be provided in an area far from the inner rib (124). Even if the winding portion (122) is provided thinly, the inner rib (124) of the insulator (120) may have structural stability by providing a thick step portion (123) that contacts and supports the inner rib (124). In this case, preferably, the thickness of the step portion (123) may be provided in the range of 1.5 mm to 3.5 mm, and the thickness of the winding portion (122) may be provided in the range of 0.8 mm to 2 mm.

[0113] Depending on the radial length of the winding portion (122) of the insulator (120), the degree of reduction in the length of the wire (104) used in the coil (103) due to the reduction in the thickness of the winding portion (122) can be increased. For example, as the radial length of the winding portion (122) is increased, the effect of reducing the thickness of the winding portion (122) can be maximized.

[0114] Specifically, the length of the winding section (122) may be arranged to be longer than the length of the step section (123). That is, a larger amount of wire (104) may be wound in the area where the winding section (122) of the insulator (120) is provided, and a relatively smaller amount of wire (104) may be wound in the area where the step section (123) is provided. Regarding the electrical characteristics of the coil (103) (resistance of the coil (103) according to the length of the wire (104)), the step section (123) may have a small influence, whereas the winding section (122) may have a large influence. That is, the length of the wire (104) forming the coil (103) that decreases by making the thickness of the winding section (122) thinner may be greater than the length of the wire (104) forming the coil (103) that increases by making the step section (123) thicker. That is, while the structural stability of the insulator (120) is maintained (or increased), the total amount of wire (104) forming the coil (103) can be reduced. Preferably, the radial length of the winding section (122) can be provided in the range of 0.1 to 0.4 times the radial length of the step section (123).

[0115] Depending on the position of the winding portion (122) of the insulator (120), the degree of reduction in the length of the wire (104) used in the coil (103) due to the reduction in thickness of the winding portion (122) can be increased. For example, as the winding portion (122) is located relatively outward compared to the thick step portion (123) in the insulator body (121), the effect of reducing the thickness of the winding portion (122) can be maximized.

[0116] Specifically, a plurality of teeth (111) may be provided in a shape that radiates outward from the edge of the rotor receiving space (119). Accordingly, the slot (116) may be provided to become larger as it moves outward toward the stator core (110) in the radial direction. A wire (104) wound on the side of the teeth (111) may be received in the slot (116). At this time, the number of turns of wire (104) that can be wound on the teeth (111) may correspond to the amount of wire (104) that the slot (116) can receive. Accordingly, a larger amount of wire (104) may be wound on the teeth (111) along the outward direction of the stator core (110). That is, the outer region of the teeth (111) may have a greater influence on the total amount of wire (104) forming the coil (103) according to the change in thickness of the insulator (120) than the inner region. Accordingly, the amount of wire (104) reduced as the thin winding portion (122) is provided in the outer region of the tooth portion (111) may be greater than the amount of wire (104) reduced as the thin winding portion (122) is provided in the inner region of the tooth portion (111).

[0117] That is, the driving motor (30) according to one embodiment can reduce the length of the wire (104) forming the coil (103) while maintaining the structural stability of the insulator (120) (stability against breakage and deformation of the inner rib (124). In other words, the driving motor (30) can improve motor efficiency as the copper loss of the coil (103) is reduced while securing the structural stability of the insulator (120).

[0118] A compressor (1) according to one embodiment comprises a housing (10), a rotor (31) rotatable about the axis of a shaft (50), a drive motor (30) including a stator (100) fixed inside the housing (10) and arranged to accommodate the rotor (31), and a compression unit (20) that receives power from the shaft (50) and compresses a refrigerant, wherein the stator (100) includes a stator core (110) including a tooth portion (111) arranged to wind a wire (104) and a rotor receiving space (119) inside, and an insulator (120) disposed axially outside the stator core (110) to insulate the wire (104) from the stator core (110), and wherein the insulator (120) includes an inner rib (124) provided at the inner end of the tooth portion (111) and the inner It includes an outer collar portion (125) that guides the wire (104) to be wound onto the tooth portion (111) together with the rib (124), and an insulator body (121) provided between the inner rib (124) and the outer collar portion (125). The insulator body (121) includes a winding portion (122) provided for winding the wire (104) and a step portion (123) that protrudes to form a step with respect to the winding portion (122) and has a thickness greater than that of the winding portion (122), and is provided so that more of the wire is wound in the winding portion than in the step portion.

[0119] The above step portion (123) can be located between the above winding portion (122) and the above inner rib (124).

[0120] The radial length of the above step portion (123) can be arranged to be shorter than the radial length of the above winding portion (122).

[0121] The minimum circumference of the wire (104) wound on the above-mentioned step portion (123) can be arranged to be larger than the minimum circumference of the wire (104) wound on the above-mentioned winding portion (122).

[0122] The thickness of the step portion (123) may be formed in the range of 1.5 mm to 3.5 mm, and the thickness of the winding portion (122) may be formed in the range of 0.8 mm to 2 mm.

[0123] The number of turns of the wire (104) wound on the above-mentioned step portion (123) can be arranged to be less than the number of turns of the wire (104) wound on the above-mentioned winding portion (122).

[0124] The length of the winding portion (122) in the radial direction of the insulator (120) may be formed in a range of 0.1 to 0.4 times the length of the step portion (123).

[0125] The stator (100) may further include an insulating film (117) provided to insulate the side of the tooth portion (111) and the wire (104).

[0126] The insulator (120) may include fixing grooves (128a, 128b) for fixing the insulating film (117) to the inner rib (124) and the outer collar portion (125). Specifically, the inner rib fixing groove (128a) may be formed by protruding outward from both ends of the inner rib (124) toward the insulator (120). The end of the insulating film (117) may be supported in the inner rib fixing groove (128a). The outer collar portion fixing groove (128b) may be provided at the part where the middle of the slot (116) and the outer collar portion (125) meet. The outer collar portion fixing groove (128b) may support the middle of the insulating film (117).

[0127] The above tooth portion (111) may include a side rib (112) provided to support a wire (104) wound around the tooth portion (111) in the inner direction of the stator (100) in the outer direction of the stator (100).

[0128] The inner rib (124) of the insulator (120) may be provided to protrude in a vertical direction with the shape of the inner end of the tooth portion (111) on which the side rib (112) is formed as the bottom surface.

[0129] The inner rib (124) of the insulator (120) and the side rib (112) of the tooth portion (111) of the stator core (110) may be provided so that the wire (104) is supported spaced apart from the rotor (31).

[0130] The tooth portion (111) of the stator core (110) includes a plurality of tooth portions (111) provided at positions corresponding to a plurality of insulator bodies (121), and between the plurality of tooth portions (111), a slot (116) may be provided to receive a wire (104) wound on the side of the tooth portion (111).

[0131] The above insulator (120) may include a coupling projection (129) formed by protruding in a shape corresponding to the edge of the slot (116) on one side in the vertical direction.

[0132] The outer collar portion (125) of the insulator (120) may include a plurality of outer ribs (126) connected to each other along the outer circumference of the insulator (120) and a rim member (127) that supports the plurality of outer ribs (126) to the inside of the insulator (120).

[0133] A compressor (1) according to the concept of the present invention comprises a housing (10), a rotor (31) rotatable about the axis of a shaft (50), a drive motor (30) including a stator (100) fixed inside the housing (10) and arranged to accommodate the rotor (31), and a compression unit (20) that receives power from the shaft (50) and compresses a refrigerant, wherein the stator (100) comprises a stator core (110) including a tooth portion (111) arranged to wind a wire (104) and a rotor receiving space (119) inside, and an insulator (120) disposed axially on the outside of the stator core (110) to insulate the wire (104) from the stator core (110), and wherein the insulator (120) comprises an inner rib (124) provided at the inner end of the tooth portion (111) and the inner It includes an outer collar portion (125) that guides the wire (104) to be wound onto the tooth portion (111) together with the rib (124), and an insulator body (121) provided between the inner rib (124) and the outer collar portion (125). The insulator body (121) includes a winding portion (122) provided for winding the wire (104) and a step portion (123) protruding to form a step with respect to the winding portion (122). The thickness of the step portion (123) is formed in the range of 1.5 mm to 3.5 mm, and the thickness of the winding portion (122) is formed in the range of 0.8 mm to 2 mm.

[0134] The insulator (120) may include a rim member (127) provided along the perimeter of the outer collar (125) on the outer side of the outer collar (125) so as to support the outer collar (125).

[0135] The length of the winding portion (122) in the radial direction of the insulator (120) may be formed in a range of 0.1 to 0.4 times the length of the step portion (123).

[0136] The above insulator (120) includes a coupling projection (129) formed by protruding axially on one surface, and the coupling projection (129) may be formed in a shape corresponding to the edge of a slot (116) provided in the stator (100).

[0137] The inner rib (124) is provided to prevent the wire (104) wound on the body from coming into contact with the rotor (31), and the stepped portion (123) may be provided to support the inner rib (124) in the opposite direction to the tension of the wire (104) received by the inner rib (124).

[0138] According to the concept of the present invention, since the overall thickness of the compressor insulator is reduced, the amount of wire and plastic resin used can be reduced.

[0139] According to the concept of the present invention, the compressor is configured to minimize copper loss occurring in the wire, so that the efficiency of the motor can be improved.

[0140] According to the concept of the present invention, the compressor can reduce wire usage, thereby reducing material costs.

[0141] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. Housing; A drive motor comprising a rotor rotatable about the axis of a shaft and a stator fixed to the inside of the housing and provided to accommodate the rotor; A compression unit that receives power from the shaft and compresses the refrigerant; comprising The above stator A stator core including a tooth portion arranged for winding a wire and a rotor receiving space on the inside, and It includes an insulator disposed axially on the outer side of the stator core to insulate the wire and the stator core, and The insulator comprises an inner rib provided at the inner end of the tooth portion, an outer collar portion that guides the wire to be wound onto the tooth portion together with the inner rib, and an insulator body provided between the inner rib and the outer collar portion. The above-described insulator body comprises a winding portion arranged to allow the wire to be wound, and a stepped portion protruding to form a step with respect to the winding portion and having a thickness greater than that of the winding portion, and a compressor arranged to allow more of the wire to be wound in the winding portion than in the stepped portion.

2. In Paragraph 1, The above step portion is a compressor located between the above winding portion and the above inner rib.

3. In Paragraph 2, A compressor configured such that the radial length of the above-mentioned step portion is shorter than the radial length of the above-mentioned winding portion.

4. In Paragraph 1, A compressor configured such that the minimum circumference of the wire wound on the above-mentioned stepped portion is greater than the minimum circumference of the wire wound on the above-mentioned winding portion.

5. In Paragraph 4, A compressor configured such that the thickness of the stepped portion is formed in the range of 1.5 mm to 3.5 mm, and the thickness of the winding portion is formed in the range of 0.8 mm to 2 mm.

6. In Paragraph 3, A compressor configured such that the number of turns of the wire wound on the above-mentioned step portion is less than the number of turns of the wire wound on the above-mentioned winding portion.

7. In Paragraph 6, A compressor configured such that the length of the winding portion in the radial direction of the insulator is formed in the range of 0.1 to 0.4 times the length of the stepped portion.

8. In Paragraph 1, A compressor further comprising: an insulating film provided such that the side of the tooth portion and the wire are insulated from the stator.

9. In Paragraph 8, The above insulator is a compressor comprising a fixing groove for fixing the insulating film to the inner rib and the outer collar portion.

10. In Paragraph 3, A compressor comprising a side rib provided to support a wire wound around the tooth portion in the inner direction of the stator in the outer direction of the stator.

11. In Paragraph 10, A compressor in which the inner rib of the insulator is provided to protrude in a vertical direction with the shape of the inner end of the tooth portion, on which the side rib is formed, as the bottom surface.

12. In Paragraph 11, A compressor in which the inner rib of the insulator and the side rib of the tooth portion of the stator core are arranged so as to support the wire spaced apart from the rotor.

13. In Paragraph 4, The tooth portion of the stator core includes a plurality of tooth portions provided at positions corresponding to a plurality of insulator bodies, and A compressor having slots provided between the plurality of tooth portions for receiving wire wound on the side of the tooth portions.

14. In Paragraph 13, The above insulator is a compressor comprising a coupling projection formed by protruding in a shape corresponding to the edge of the slot on one side in the vertical direction.

15. In Paragraph 2 A compressor comprising a plurality of outer ribs connected to each other along the outer circumference of the insulator and a rim member that supports the plurality of outer ribs to the inside of the insulator.

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