Stator for compressor motor

[0026] Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. Reference signs are given to constituent elements in the respective drawings. Even if the same constituent elements are shown on different drawings, it should be noted that the same reference signs are used as much as possible. In addition, in describing the embodiments of the present invention, when it is determined that specific descriptions of related known structures or functions hinder the understanding of the embodiments of the present invention, detailed descriptions thereof are omitted.

[0027] In addition, in describing the constituent elements of the embodiments of the present invention, terms such as first, second, A, B, a, and b may be used. Such terms are only used to distinguish the constituent element from other constituent elements, and the nature or order or sequence of related constituent elements will not be used by these. When it is described that a component is "connected", "combined" or "connected" with other components, the component can be directly connected or connected with other components, but it should be understood that: "Connected", "joined" or "connected" has other constituent elements.

[0028] Hereinafter, the compressor according to the embodiment of the present invention will be described in detail with reference to the drawings. The compressor refers to a rotary compressor.

[0029] figure 1 It is a diagram showing the structure of the compressor of the first embodiment of the present invention.

[0030] Reference figure 1 The rotary compressor 100 of the first embodiment of the present invention includes: a casing 110 for forming an internal space; and a top cover 112 coupled to the upper side of the casing 110.

[0031] A motor is provided in the housing 110. The motor includes: a stator 120, which generates magnetic force by applied power; and a compression mechanism 130, which is configured to conduct refrigerant through an induced electromotive force, which is passed through the compression mechanism The interaction between the part 130 and the stator 120 is generated.

[0032] In detail, the compression mechanism 130 includes a rotor 131 which is arranged inside the stator 120 and rotates. The stator 120 and the rotor 131 can be understood as the constituent elements of the compressor motor. In addition, the compression mechanism 130 further includes a rotating shaft 135 that is coupled to the rotor 131 and rotates with the rotation of the rotor 131.

[0033] In addition, the rotary compressor 100 further includes: a roller 141 which is eccentrically coupled to the lower part of the rotating shaft 135 and rotates along a predetermined eccentric trajectory as the rotating shaft 135 rotates; a cylinder 142 , The roller 141 is accommodated in the cylinder 142; a main bearing 143 is provided on the upper and lower parts of the cylinder 142 and supports the cylinder 142; and a secondary bearing 144. The main bearing 143 and the sub-bearing 144 are substantially formed in a disk shape, thereby being able to support the upper side and the lower side of the cylinder 142, respectively.

[0034] In addition, the rotary compressor 100 further includes: vanes (not shown, vane), which reciprocate in a slot formed in the cylinder 142 with the rotation of the roller 141 while separating A suction chamber and a compression chamber; a suction port 145 and a discharge port, which constitute a flow path for the refrigerant sucked in and discharged from the cylinder 142; a muffler 146, which is provided at the upper part of the discharge port and is used to reduce the refrigerant Spit out noise.

[0035] The effect produced by the above structure is explained. When the rotating shaft 135 rotates, the roller 141 draws a predetermined eccentric trajectory, while rotating and revolving along the inner peripheral surface of the cylinder 142. In addition, the refrigerant flows into the suction chamber of the cylinder 142 through the suction port 145, and the refrigerant can be compressed in the compression chamber during the rotation of the roller 141.

[0036] And, if the pressure in the compression chamber is equal to or higher than the discharge pressure, a discharge valve (not shown) provided on the side of the discharge port is opened, and the compressed refrigerant is discharged from the discharge valve through the opened discharge valve. Spit out. The discharge valve may be provided on the main bearing 143 on the upper side of the cylinder 142.

[0037] The refrigerant discharged through the discharge port flows into the muffler 146 above the main bearing 143. The muffler 146 serves to reduce the noise of the discharged refrigerant.

[0038] The main bearing 143 is provided on the upper side of the cylinder 142, and executes to disperse the compressive force of the refrigerant generated in the cylinder 142 or the force generated in the compressor motors 120 and 131 to the housing. The role of the body 110 side.

[0039] figure 2 Is a perspective view showing a state in which a coil is wound in the stator of the first embodiment of the present invention,

[0040] image 3 Is a top view of the stator of the first embodiment of the present invention, Figure 4 It is an exploded view of the stator of the first embodiment of the present invention.

[0041] Reference Figure 2 to Figure 4 , The rotary compressor 100 of the first embodiment of the present invention includes: a housing 110 (refer to figure 1 ), which has a substantially cylindrical shape and forms an internal space; a stator 120, which is arranged inside the housing 110; a rotor 131, which is arranged to rotate inside the stator 120; a rotating shaft 135 , Which is coupled to the rotor 131 and rotates as the rotor 131 rotates.

[0042] In detail, the stator 120 is used as a structure of the compressor motor and generates magnetic force through the applied power. The stator 120 includes a stator body 121 formed into a substantially hollow cylindrical shape, and a coil winding part 125 that protrudes inward from the inner circumferential surface of the stator body 121.

[0043] The stator body 121 is inserted into the inside of the housing 110, and at least a part of the outer peripheral surface of the stator body 121 may be combined with or contact with the inner peripheral surface of the housing 110.

[0044] The coil winding part 125 is provided in plurality, and the plurality of coil winding parts 125 are arranged at intervals. The coil 160 is wound around each of the plurality of coil winding parts 125, and at least a part of the coil 160 may be arranged between one coil winding part 125 and the other coil winding part 125.

[0045] In detail, the coil winding portion 125 includes a main body 122 that protrudes centrally from the inner circumferential surface of the stator body 121 and an extension portion 123 that extends from the end of the main body 122 to both sides.

[0046] Here, the extension portion 123 may respectively extend toward two adjacent coil winding portions 125. That is, one coil winding portion 125 may be formed with two extension portions 123 extending toward the left and right sides, respectively. The extension portion 123 can be understood as a "detachment prevention rib" for preventing the coil 160 wound on the coil winding portion 125 from detaching.

[0047] In addition, between the extension portions 123 of two adjacent coil winding portions 125, an insertion space 124 for inserting the coil 160 is formed.

[0048] In addition, the stator 120 may further include an insulating part 170.

[0049] The insulating portion 170 can reduce electromagnetic noise generated by the stator 120. In detail, the insulating portion 170 is applied to the coil 160 by a power source to generate electromagnetic force, and when the compressor motors 120 and 131 are operated by the electromagnetic force, the generated electromagnetic noise can be reduced.

[0050] The insulating part 170 may be disposed between two adjacent coil winding parts 125. In addition, the insulating portion 170 may be provided on the inner peripheral surface of the stator body 121. At this time, the insulating portion 170 may cover a part of the coil 160 disposed between one coil winding portion 125 and the other coil winding portion 125.

[0051] That is, the insulating portion 170 can reduce electromagnetic noise generated between the coil 160 and the stator 120 by covering a part of the coil 160 provided between two adjacent coil winding portions 125 . The insulating portion 170 can insulate the coil 160 from the stator 120 by covering a part of the coil 160.

[0052] The insulating portion 170 may be made of plastic or rubber material. In addition, the insulating portion 170 may be made of insulating material, damping material, acoustic damping material, or the like.

[0053] When the insulating portion 170 is made of plastic, the insulating portion 170 may be made of a material excellent in at least one of heat resistance, chemical resistance, abrasion resistance, and workability. For example, the insulating portion 170 may be made of Polyetheretherketone (PEET). In addition, the insulating portion 170 may be processed by a processing device, and may be installed on the inner peripheral surface of the stator body 121.

[0054] In the case where the insulating portion 170 is made of rubber, the insulating portion 170 may be composed of at least durability (hardness, tensile strength, etc.), use temperature, heat resistance, and chemical resistance (acid resistance, etc.) An excellent material composition. For example, the insulating portion 170 may be made of Polyurethane Rubber or Silicone Rubber. For example, the insulating portion 170 may be made of liquid rubber, which is applied to the inner circumferential surface of the stator body 121 and then hardened, thereby being able to be fixed to the inner circumferential surface of the stator body 121. Alternatively, the insulating portion 170 may be made of a plate-shaped rubber, inserted into the inner peripheral surface of the stator body 121 and fixed.

[0055] Hereinafter, the structure of the insulating portion 170 will be described in more detail.

[0056] The insulating part 170 may include an insulating part body 171, a first extension part 172 and a second extension part 173.

[0057] The insulating body 171 may be coupled to the inner peripheral surface of the stator body 121. In detail, the insulating part body 171 may be coupled to the inner peripheral surface of the stator body 121, which is located between one coil winding part 125 and the other coil winding part 125. In addition, the insulating portion body 171 can move in the up-down direction of the stator body 121 and be coupled to the inner peripheral surface of the stator body 121. At this time, the up-down direction of the stator body 121 can be understood as the axial direction of the stator body 121.

[0058] The first extension 172 may extend from a side surface of the insulating body 171. In addition, the second extension portion 173 may extend from the other side surface of the insulating portion body 171. In this embodiment, the case where the first extension portion 172 extends from the left side of the insulating portion body 171 and the second extension portion 173 extends from the right side of the insulating portion body 171 will be described.

[0059] The first extension 172 may extend from one side of the insulation body 171 in a direction facing the extension 123 of one coil winding part 125. In addition, the first extension portion 172 may extend from the insulating portion body 171 and be coupled to the main body 122 of one coil winding portion 125. A part of a coil 160 wound around the adjacent coil winding portion 125 may be in contact with the first extension portion 172.

[0060] The second extension part 173 may extend from the other side of the insulating part body 171 in a direction facing the extension part 123 of the other coil winding part 125. Also, the second extension part 173 may extend from the insulating part body 171 and be coupled to the main body 122 of the other coil winding part 125. A part of another coil 160 wound on the adjacent coil winding part 125 may be in contact with the second extension part 173.

[0061] In this embodiment, if the insulating portion 170 is viewed from above, it is roughly The insulating part 170 may be inserted between one coil winding part 125 and the other coil winding part 125 of the stator 120.

[0062] In addition, the insulating part body 171 may extend along the axial direction of the stator body 121. The insulating body 171 extending in the axial direction may be formed more protruding than the stator body 121. The first extension 172 and the second extension 173 may extend along the axial direction of the stator body 121. The first extension portion 172 and the second extension portion 173 extending in the axial direction may protrude more than the stator body 121. That is, the upper and lower ends of the insulating portion 170 may be formed to protrude more than the upper and lower ends of the stator body 121. At this time, the upper end of the insulating portion 170 may be defined as a “protruding portion on one side”, and the lower end of the insulating portion 170 may be defined as a “protruding portion on the other side”, and the insulating portion 170 can be accommodated in The part inside the stator body 121 is defined as an "inner fixed part".

[0063] If the insulating portion 170 is arranged to protrude more than the stator body 121, when the coil 160 is wound around one coil winding portion 125 and the other coil winding portion 125, it is possible to prevent the coil 160 from directly contacting The stator 120 is in contact. The coil 160 wound on the stator main body 121 is connected to the stator body 121 through the one-side protruding part and the other-side protruding part of the insulating part 170 arranged to be more protruding than the stator main body 121 The upper end and the lower end of 120 are wound around the stator 120 with an interval therebetween. In addition, the inner fixing part of the insulating part 170 can be stably fixed to the stator body 121.

[0064] In addition, as the thickness of the insulating portion 170 increases, a problem that the number of turns of the coil 160 wound between one coil winding portion 125 and the other coil winding portion 125 may decrease. Also, as the thickness of the insulating portion 170 decreases, a problem of reducing the effect of reducing noise generated by the coil 160 may occur. Therefore, the insulating portion 170 may be set to a preset thickness.

[0065] According to this configuration of the present invention, the insulating portion 170 is arranged between two adjacent coil winding portions 125, and the electromagnetic noise generated in the coil 160 due to the coil 160 being wound around the insulating portion 170 It can be lowered by the insulating portion 170. In detail, since a part of the coil 160 wound on the coil winding part 125 is surrounded by the insulating part 170, the electromagnetic noise generated by the coil 160 is attenuated by the insulating part 170. The vibration can reduce noise.

[0066] In addition, the insulating portion 170 can prevent electrical problems caused by direct contact between the coil 160 wound around the coil winding portion 125 and the stator 120.

[0067] Figure 5 It is a perspective view of the insulating part of the second embodiment of the present invention.

[0068] A feature of the insulating part of the second embodiment of the present invention is that a part of the insulating part of the first embodiment is deformed. Therefore, the description of the same or similar structure as the first embodiment can be cited in the description of the second embodiment.

[0069] Reference Figure 5 The insulating part of the second embodiment of the present invention may include a first insulating part 270 and a second insulating part 280.

[0070] The first insulating portion 270 and the second insulating portion 280 may be arranged to be spaced apart from each other. The first insulating portion 270 and the second insulating portion 280 may be arranged with an interval from each other in the up-down direction based on the axial direction of the stator body 121. The first insulating part 270 may be disposed on the upper part of the stator body 121, and the second insulating part 280 may be disposed on the lower part of the stator body 121.

[0071] The first insulating part 270 may be disposed above the second insulating part 280. In addition, the first insulating portion 270 may include a first insulating portion body 271, a first extension portion 272, and a second extension portion 273.

[0072] The first insulating part body 271 may be combined with the inner peripheral surface of the stator body 121, and the stator body 121 is located between two adjacent coil winding parts. The first extension part 272 may extend from one side of the first insulating part body 271 in a direction facing the extension part of one coil winding part, and be combined with the main body of the one coil winding part. The second extension portion 273 may extend from the other side of the first insulating portion body 271 in a direction facing the extension portion of the other coil winding portion, and be combined with the main body of the other coil winding portion . At this time, the first extension portion 272 may be referred to as "one-side extension portion", and the second extension portion 273 may be referred to as "the other side extension portion".

[0073] The second insulating portion 280 may be disposed under the first insulating portion 270. In addition, the second insulating part 280 may include a second insulating part body 281, a third extension part 282 and a fourth extension part 283.

[0074] The second insulating part body 281 may be coupled to the inner circumferential surface of the stator body 121, which is located between two adjacent coil winding parts. The third extension part 282 may extend from one side of the second insulating part body 281 in a direction facing the extension part of one coil winding part, and be combined with the main body of the one coil winding part. The fourth extension part 283 may extend from the other side of the second insulating part body 281 in a direction facing the extension part of the other coil winding part, and be combined with the main body of the other coil winding part . At this time, the second extension portion 282 may be referred to as a “one-side extension portion”, and the fourth extension portion 283 may be referred to as a “another-side extension portion”.

[0075] The first insulating part 270 may be arranged to protrude more to the upper side than the upper end of the stator body 121. In addition, the second insulating portion 280 may be arranged so as to protrude further downward than the lower end of the stator body 121. That is, a part of the first insulating part 270 and a part of the second insulating part 280 may be arranged so as to protrude more outward than the upper end and the lower end of the stator body 121. In addition, the remaining part of the first insulating part 270 and the remaining part of the second insulating part 280 may be disposed inside the stator body 121 and may be combined with the stator body 121.

[0076] According to this structure, in the process of winding the coil on the stator, the first insulating portion 270 and the second insulating portion 280 can prevent the stator and the coil from directly contacting. In addition, by separating the insulating part coupled to the stator into the first insulating part 270 and the second insulating part 280 and providing them, the manufacturing cost for manufacturing the insulating part can be reduced. In addition, since the first insulating part 270 and the second insulating part 280 can be easily installed on the stator body 121, there may be an advantage of simplifying a method for coupling the insulating part to the stator body 121.

[0077] Image 6 Is a perspective view of the stator of the third embodiment of the present invention, Figure 7 It is a perspective view of the insulator of the third embodiment of the present invention.

[0078] A feature of the insulating part of the third embodiment of the present invention is that a part of the insulating part of the second embodiment is deformed. Therefore, the description of the same or similar structure as the second embodiment can be cited in the description of the third embodiment.

[0079] Reference Image 6 with Figure 7 The stator 120 of the third embodiment of the present invention may include an upper insulator 370 and a lower insulator 380.

[0080] The upper insulator 370 and the lower insulator 380 may be arranged to be spaced apart from each other. The upper insulator 370 and the lower insulator 380 may be spaced apart from each other in the vertical direction based on the axial direction of the stator body 121.

[0081] The upper insulator 370 may be disposed at the upper end of the stator body 121. Moreover, the upper insulator 370 can be understood as an insulator formed by connecting a plurality of insulating parts of the second embodiment of the present invention.

[0082] The upper insulator 370 may include a first insulation body 371, a first extension 372, a second extension 373 and a first connection part 374.

[0083] The first insulating part body 371 may be combined with the inner circumferential surface of the stator body 121, which is located between two adjacent coil winding parts. The first extension 372 may extend from a side surface of the first insulation body 371 and be combined with the main body of a coil winding part. The second extension part 373 may extend from the other side surface of the first insulating part body 371 and be combined with the main body of another coil winding part.

[0084] The first connecting portion 374 is configured by making the first extension portion 372 of the first insulating portion body arranged on one side and the first extension portion 372 arranged on the other side of the plurality of first insulating portion bodies arranged adjacent to each other. The second extension portion 373 of the insulation body is connected to form an integral upper insulator 370. The first connecting portion 374 is disposed at the upper end of the first extending portion 372 and the second extending portion 373, and connects the first extending portion 372 and the second extending portion 383.

[0085] In the process of coupling the upper insulator 370 to the stator body 121, the first connecting portion 374 may be disposed on the stator body 121. In other words, in the process of coupling the upper insulator 370 to the upper end of the stator body 121, the first connecting portion 374 is disposed on the stator body 121, and a part of the upper insulator 370 is connected to the stator body 121. The inside of the stator body 121 is combined, and the remaining part of the stator body 121 may be exposed to the outside.

[0086] The lower insulator 380 may be disposed at the lower end of the stator body 121. Furthermore, the lower insulator 380 can be understood as an insulator formed by connecting a plurality of insulating parts of the second embodiment of the present invention.

[0087] The lower insulator 380 may include a second insulating part body 381, a third extension part 382, ​​a fourth extension part 383 and a second connection part 384.

[0088] The second insulating part body 381 may be coupled to the inner circumferential surface of the stator body 121, which is located between two adjacent coil winding parts. The third extension part 382 may extend from a side surface of the second insulating part body 381 and be combined with the main body of a coil winding part. The fourth extension part 383 may extend from the other side surface of the second insulating part body 381 and be combined with the main body of another coil winding part.

[0089] The second connecting portion 384 is configured by making the third extension portion 382 of the second insulating portion body arranged on one side among the plurality of second insulating portion bodies arranged adjacent to each other and the second extending portion 382 arranged on the other side. The fourth extension 383 of the insulating body is connected to form an integral lower insulator 380. The second connecting portion 384 is disposed at the lower ends of the third extending portion 382 and the fourth extending portion 383, and connects the third extending portion 382 and the fourth extending portion 383.

[0090] In the process of coupling the lower insulator 380 to the stator body 121, the second connecting portion 384 may be disposed on the stator body 121. In other words, in the process of coupling the lower insulator 380 to the lower end of the stator body 121, the second connecting portion 384 is disposed on the stator body 121, and a part of the lower insulator 380 is connected to the stator body 121. The inside of the stator body 121 is combined, and the remaining part of the stator body 121 may be exposed to the outside.

[0091] According to this configuration of the present invention, the upper insulator 370 and the lower insulator 380 formed as one body can be easily coupled to the stator 120. In addition, the first connection portion 374 of the upper insulator 370 and the second connection portion 384 of the lower insulator 380 can prevent the coils wound on one coil winding portion and the other coil winding portion from directly contacting the upper end of the stator 120 and The lower ends are in contact.

[0092] Picture 8 It is a graph showing the results of noise analysis of the stator of the present invention.

[0093] Reference Picture 8 , Picture 8 It is a graph for analyzing the noise generated in the stator of the first embodiment of the present invention and the noise generated in the existing stator.

[0094] In the stator of the present invention, an insulating part is provided between one coil winding part and the other coil winding part, and the coils wound around the one coil winding part and the other coil winding part Part of the electromagnetic noise generated in the state of covering the insulating part was measured. In addition, in the existing stator, a thin-film insulating film member and an insulator are provided between one coil winding part and the other coil winding part, and the electromagnetic field generated in a state where a part of the coil is covered with the insulating film member is provided. The noise was measured.

[0095] According to the graph, it can be confirmed that the electromagnetic noise generated in the stator of the present invention can effectively attenuate the vibration of the noise by covering a part of the insulating part of the coil, and as the frequency increases, the electromagnetic noise generated in the stator of the present invention Compared with the electromagnetic noise generated in the existing stator, the electromagnetic noise is significantly reduced.