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WO2019240442A1 - Compresseur linéaire - Google Patents

Compresseur linéaire Download PDF

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Publication number
WO2019240442A1
WO2019240442A1 PCT/KR2019/006928 KR2019006928W WO2019240442A1 WO 2019240442 A1 WO2019240442 A1 WO 2019240442A1 KR 2019006928 W KR2019006928 W KR 2019006928W WO 2019240442 A1 WO2019240442 A1 WO 2019240442A1
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WO
WIPO (PCT)
Prior art keywords
terminal
housing
stator
bobbin
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/006928
Other languages
English (en)
Korean (ko)
Inventor
김재범
이종구
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of WO2019240442A1 publication Critical patent/WO2019240442A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14—Provisions for readily assembling or disassembling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • the present invention relates to a linear compressor.
  • the compressor may be classified into a reciprocating compressor, a rotary compressor, and a scroll compressor according to a method of compressing a refrigerant.
  • a reciprocating compressor is a method in which a compression space is formed between a piston and a cylinder and the piston reciprocates linearly to compress the fluid.
  • a rotary compressor is a method in which the fluid is compressed by a roller eccentrically rotated inside the cylinder. A pair of scrolls are engaged to rotate and compress the fluid.
  • a reciprocating compressor is known to have a crank method of compressing a refrigerant by converting a rotational force of a rotary motor into a linear motion, and a vibration method of compressing a refrigerant using a linear motor having a linear reciprocating motion.
  • the oscillating reciprocating compressor is called a linear compressor, and such a linear compressor has an advantage that the efficiency is improved and the structure is simple because there is no mechanical loss associated with converting the rotary motion into a linear reciprocating motion.
  • the linear compressor is an exposed type in which a terminal terminal portion to which power is applied from the outside is fixed to a casing, and a motor terminal portion is provided in a motor assembly constituting a part of the compressor body, and the terminal terminal portion and the motor terminal portion are detachably connected. It is electrically connected using a lead wire.
  • Patent document Korean Patent Laid-Open Publication No. KR10-2007-0075916 shows an example in which an exposed type lead wire is applied.
  • the motor terminal portion of the motor assembly is arranged in the transverse direction, which is a direction orthogonal to the axial direction of the motor assembly, the motor terminal portion protrudes out of the stator core constituting the motor assembly, thereby The axial length of the motor assembly including the motor terminal is long, there is a problem that the size of the compressor increases.
  • An object of the present invention is to provide a linear compressor that can easily connect the terminal terminal portion and the motor terminal portion of the motor assembly.
  • Another object of the present invention is to provide a linear compressor capable of connecting a terminal terminal portion and a motor terminal portion of a motor assembly without using a lead wire.
  • Another object of the present invention is to provide a linear compressor capable of connecting the terminal terminal portion directly to the motor terminal portion of the motor assembly.
  • Another object of the present invention is to provide a linear compressor capable of miniaturizing the size of the compressor by providing the motor terminal portion of the motor assembly inside the stator core constituting the motor assembly.
  • a compressor body consisting of a linear motor and a compression unit; And a housing that surrounds and supports the compressor main body, wherein the motor terminal unit having a conductive wire embedded in the compressor main body includes a terminal terminal unit in the housing, and directly connects the terminal terminal unit and the motor terminal unit.
  • Compressors can be provided.
  • the terminal terminal portion has a plurality of first terminals
  • the motor terminal portion has a plurality of second terminals corresponding one-to-one with the first terminal, wherein each of the plurality of first terminals and the second terminal in the axial direction Can be arranged.
  • the compression space is formed cylinder; A piston reciprocating in the axial direction inside the cylinder to form a compression space together with the cylinder; A mover coupled to the piston and transmitting a driving force to the piston; And a stator including a coil wound on the bobbin and a plurality of stator cores stacked on the bobbin, the stator generating a driving force together with the mover, wherein the bobbin is formed in an annular shape and the coil is wound along a circumferential direction.
  • Coil winding unit and a motor terminal unit provided in the coil winding unit and having a plurality of second terminals arranged in an axial direction.
  • the motor terminal portion may be formed to be located between the stator cores, and at least one of the plurality of second terminals may be formed to be within an axial range of the stator cores.
  • the motor terminal portion may have an axial length greater than the circumferential length.
  • the motor terminal unit may be formed in a triangular cross-sectional shape in which the cross-sectional area is narrowed toward the center of the bobbin.
  • the plurality of second terminals may be arranged on the same line along the axial direction.
  • the plurality of second terminals may have contact surfaces formed on both sides in a horizontal direction, and both sides of the axial direction between the two contact surfaces may be opened.
  • the terminal closest to the coil of the plurality of second terminals may further include a closed surface in which an axial end is blocked to restrict movement of the first terminal corresponding thereto.
  • the motor terminal portion may include a support protrusion protruding by a predetermined height in a radial direction along the closing surface from one side of the closing surface in the axial direction.
  • the contact surface may be formed with at least one slit cut in the longitudinal direction in the middle.
  • the stator is inserted into and fixed to the inner circumferential surface of the housing in which the stator is accommodated, the housing having a plurality of first terminals coupled to the terminal terminal to which an external power source is connected, the plurality of first terminals are It may be arranged along the axial direction to be inserted one-to-one to the second terminal provided in the bobbin.
  • the motor terminal part may extend from the bobbin, and the motor terminal part may include a lead wire electrically connecting the second terminal and the coil.
  • a housing In addition, in order to achieve the object of the present invention, a housing; A stator inserted into the housing and fixed to the bobbin having a coil wound thereon, wherein a plurality of stator cores are stacked in a circumferential direction to form a cylindrical shape; A cylinder inserted into the stator and fixed, and having a compression space formed therein; A piston reciprocating in the axial direction inside the cylinder to form a compression space together with the cylinder; And a mover coupled to the piston and transmitting a driving force to the piston.
  • a terminal terminal unit provided in the housing and having a first terminal connected to an external power source; And a motor terminal part provided at the bobbin and having a second terminal inserted into and electrically connected to the first terminal of the terminal terminal part.
  • the bobbin the cylindrical portion is formed in an annular and the coil is wound along the circumferential direction; And a plurality of side wall portions extending radially from both ends of the cylindrical portion, wherein the motor terminal portion may extend from the side wall portion.
  • the housing may include a first housing having a cylindrical shape having a first opening end and a second opening end at both sides in an axial direction, and the stator being inserted into and coupled to the housing; A second housing coupled to the first opening end of the first housing; And a third housing coupled to the second opening end of the first housing, wherein the terminal terminal portion is provided in the third housing, and the motor terminal portion extends in an axial direction along an inner circumferential surface of the third housing. Can be.
  • the housing may include a first housing having a cylindrical shape having a first opening end and a second opening end at both sides in an axial direction, and the stator being inserted into and coupled to the housing; A second housing coupled to the first opening end of the first housing; And a third housing coupled to the second opening end of the first housing, wherein the terminal terminal part is provided in the second housing, and the motor terminal part is one side surface of the second housing in contact with the third housing. It may be formed on one side of the side wall portion facing.
  • the terminal terminal portion is formed in the housing, and the motor terminal portion including the conducting wire is respectively formed in the bobbin to directly connect the terminal terminal portion and the motor terminal portion, thereby connecting the first terminal of the terminal terminal portion and the second terminal of the motor terminal portion. Direct connection can be made, thereby removing the exposed lead wire that electrically connects between the terminal terminal portion and the motor terminal portion.
  • the terminal terminal portion and the motor terminal portion are formed at positions corresponding to each other, so that the terminal terminal portion and the motor terminal portion are slidably coupled when the housing is coupled to the compressor body, thereby assembling the terminal terminal portion and the motor terminal portion. Can be facilitated. This can lower manufacturing costs.
  • the insertion degree can be limited when the first terminal is inserted into the second terminal, thereby preventing the second terminal from being damaged or misaligned.
  • FIG. 1 is a cross-sectional view showing a linear compressor according to the present invention
  • FIG. 2 is a perspective view showing a linear motor in the linear compressor according to FIG. 1;
  • FIG. 3 is a perspective view of the bobbin in the linear motor according to FIG.
  • FIG. 4 is an enlarged perspective view of the motor terminal unit in FIG. 3;
  • FIG. 5 is a schematic view showing a process of assembling the intermediate housing and the stator according to the present embodiment
  • 6A and 6B are cross-sectional views illustrating an enlarged state in which a first terminal and a second terminal are connected in an assembling process according to FIG. 5;
  • FIG. 7 is a schematic view illustrating a process in which the first terminal is coupled to the second terminal in a radial direction in FIG. 6A or 6B;
  • FIG 8 and 9 are a cross-sectional view and a perspective view showing another embodiment of the terminal terminal portion and the motor terminal portion according to the present invention.
  • the linear compressor according to the present invention performs an operation of sucking and compressing a fluid and discharging the compressed fluid.
  • the linear compressor according to the present invention may be a component of a refrigeration cycle, hereinafter, the fluid is described by taking a refrigerant circulating through the refrigeration cycle as an example.
  • FIG. 1 is a cross-sectional view showing a linear compressor according to the present invention
  • Figure 2 is a perspective view showing a linear motor in the linear compressor according to FIG.
  • the linear compressor 100 includes a housing 110, a drive unit 120, a compression unit 130, and a support bracket 140.
  • the housing 110 is disposed to be exposed to the atmosphere, and may be formed of a metal material having a high thermal conductivity so as to quickly dissipate heat generated from the driving unit 120 and the compression unit 130.
  • the housing 110 may be formed of an intermediate housing 111, a front housing 112, and a rear housing 113.
  • the intermediate housing 111 constituting the first housing may have a cylindrical shape in which both front and rear ends thereof are open.
  • the inner diameter of the intermediate housing 111 may be formed to be substantially equal to the outer diameter of the drive unit 120 of the linear motor, that is, the outer diameter of the outer stator 121. Accordingly, the outer stator 121 may be inserted into contact with the inner circumferential surface of the intermediate housing 111 and may be fixed by the intermediate housing 111.
  • the inner circumferential surface of the intermediate housing 111 may be provided with a plurality of first terminals 162 to couple the terminal terminal 160 to which an external power source is connected.
  • the plurality of first terminals 162 are arranged along the axial direction so as to be inserted one-to-one into the second terminals 172 of the bobbin 125a.
  • the terminal terminal portion including the first terminal will be described again with the motor terminal portion to be described later.
  • the front housing 112 constituting the second housing covers the front open end of the middle housing 111 and may be formed in a disc shape.
  • One side of the front housing 112 may be supported by being in close contact with the front side of the driving unit 120, that is, the front surface of the stator 120a.
  • the discharge space portion 112a may be formed in the center portion of the front housing 112 to be convex toward the outside so as to form part of the discharge space 104 to be described later.
  • a discharge port 112b may be formed in the center of the discharge space 112a, and a discharge pipe 116 may be connected to the discharge hole 112b.
  • the discharge pipe 116 may be formed of a pipe having a strength sufficient to be coupled to the support bracket 140 to be described later to support the compressor main body C in the axial direction.
  • the rear housing 113 constituting the third housing covers the rear opening end of the middle housing 111, and may have various shapes according to the length of the middle housing 111.
  • the rear housing 113 may be secured when the mover 120b to be described later has a sufficient space for reciprocating motion. It may be formed in a disk shape such as the front housing 112.
  • the rear housing 113 may form a suction space. It may be formed in a cap shape having a space 101.
  • a suction port 113a may be formed at a central portion of the rear housing 113, and a suction pipe 115 may be connected to the suction port 113a to allow refrigerant to be sucked into the suction space of the housing 110.
  • the suction pipe 115 may be formed of a pipe having a strength sufficient to be coupled to the support bracket 140 to support the compressor body C. However, when the housing 110 is supported to slide almost on the support bracket 140, the load applied to the suction pipe 115 and the discharge pipe 116 may be reduced.
  • the housing 110 has been described as an example of being elongated in the lateral direction, but in some cases, the housing 110 may be elongated in the longitudinal direction according to the arrangement of the driving unit 120 and the compression unit 130.
  • the drive unit 120 of the linear motor may include a stator 120a and a mover 120b that reciprocates with respect to the stator 120a.
  • the stator 120a may include an outer stator 121 and an inner stator 122 spaced apart by a predetermined gap 120c inside the outer stator 121.
  • the outer stator 121 includes a coil winding 125 and a stator core 126 arranged to surround the coil winding 125, and the coil winding 125 includes a bobbin 125a and a bobbin 125a.
  • the winding coil 125b wound in the circumferential direction may be included.
  • the bobbin 125a is formed in an annular shape, and is provided on one side of the coil winding 127 in which the winding coil 125b is wound along the circumferential direction, and on one side of the coil winding 127 in the axial direction.
  • the motor terminal unit 170 includes a plurality of second terminals 172 along the axial direction.
  • the coil winding portion 127 includes a cylindrical portion 127a having a predetermined length in the axial direction, and a plurality of side wall portions 127b and 127c extending radially from both ends of the cylindrical portion 127a.
  • the motor terminal portion 170 extends along the axial direction at one side wall portion 127c. The motor terminal portion including the second terminal will be described later with the terminal terminal portion.
  • the stator core 126 may include a plurality of lamination sheets stacked radially, and a plurality of lamination sheets may be formed of lamination blocks stacked in an arc shape such that the curvature of the inner circumferential surface and the curvature of the outer circumferential surface are the same, along the circumferential direction. It may be arranged.
  • This embodiment describes an example in which a plurality of stator cores are arranged along the circumferential direction.
  • the inner stator 122 may have a plurality of lamination sheets radially stacked to form a cylindrical shape.
  • the plurality of lamination sheets can maintain a cylindrical shape by pressing a fixed ring (unsigned) on both front and rear sides.
  • a cylindrical cylinder space 122a is formed at the center of the inner stator 122, and the cylinder 131, which will be described later, is inserted into and fixed to the cylinder space 122a.
  • a portion of the first discharge space 104a and the second discharge space 104b may be formed in the remaining space after the cylinder 131 is inserted in the cylinder space 122a.
  • the outer stator 121 and the inner stator 122 may be formed to have a plurality of voids (not shown) spaced apart from each other before and after the coil winding body 125 therebetween, and the winding coil body ( One side may be spaced apart from each other to form a space (120c), while the other side may be connected to each other to have one space.
  • the magnets 124a and 124b may be coupled to the mover 120b or may be coupled to the stator 120a.
  • This embodiment describes a linear motor having one air gap and a magnet coupled to a stator as an example.
  • Magnets 124a and 124b made of permanent magnets may be attached to the pawls 121a of the outer stator 121 forming the voids 120c.
  • the pole part 121a may be formed to be the same as or longer than the length of the magnets 124a and 124b.
  • the combination of the stators as described above may determine the stiffness of the magnetic spring, the alpha value (the thrust constant or the induced voltage constant of the motor), the alpha value variation rate, and the like, which will be described later.
  • the stator 120a may have its length or shape determined in various ranges according to the design of the product to which the linear motor is applied.
  • the magnets 124a and 124b may be disposed so as not to overlap the winding coil 125b in the radial direction. Accordingly, the diameter of the motor can be reduced.
  • the magnets 124a and 124b may have a first magnet 124a and a second magnet 124b having different polarities in the reciprocating direction of the mover 120b (hereafter, mixed with the axial direction). . Accordingly, the magnets 124a and 124b may be formed of a 2-pole magnet having N and S poles having the same length on both sides.
  • the magnets 124a and 124b in the present embodiment are illustrated as being provided only in the outer stator 121, but the present invention is not limited thereto.
  • the magnets 124a and 124b may be provided only in the inner stator 122 and may be provided in both the outer stator 121 and the inner stator 122.
  • the mover 120b may include a core holder 123a and a magnetic core 123b supported by the core holder 123a.
  • the core holder 123a is formed in a cylindrical shape, one end of which is coupled to the piston 132 which will be described later, and the other end of which is reciprocally inserted into the air gap 120c between the outer stator 121 and the inner stator 122. Can be.
  • the core holder 123a may be placed in a free state in the axial direction, but in some cases, the core holder 123a may be supported in the axial direction by a spring as shown in FIG. 1.
  • the mover 120b of the present embodiment reciprocates by a kind of magnetic resonance spring formed by the winding coil 125b, the magnet, and the magnetic core 123b, as described above, the core holder (b) Although 123a) is not supported by a separate spring, the reciprocating motion can be performed. However, it is necessary to limit the movement of the mover (120b) depending on the type of transport or installation of the compressor in consideration of this can be supported by the mover support spring 127 of the compression coil spring in the rear side of the core holder (123a). have.
  • the magnetic core 123b may have a plurality of magnetic sheets stacked or made of blocks to be press-fit into the core holder 123a. However, the magnetic core 123b may be fixed by being bonded to the outer circumferential surface of the core holder 123a or by using a separate fixing ring (not shown). Accordingly, the magnetic core 123b may linearly reciprocate with the core holder 123a by mutual electromagnetic force formed between the outer stator 121 and the inner stator 122.
  • the driving unit 120 when a current is applied to the winding coil 125b, a magnetic flux is formed in the stator 120a, and the magnetic flux formed by applying the current will be described later. Due to the interaction of the magnetic flux formed in the magnetic core 123b of the mover 120b, a force capable of moving the mover 120b in the left and right directions of the drawing may be generated. As a result, the drive unit of the linear compressor according to the present invention may perform the function of a magnetic resonence spring to replace the mechanical resonant spring.
  • the driving unit 120 can provide the thrust and the return force for the reciprocating motion of the piston 132 by the stator 120a and the mover 120b.
  • the thrust ( ⁇ ) means the force pushing the mover (120b) in the direction of movement, specifically acting toward the top dead center for the compression stroke and the bottom dead center for the suction stroke.
  • the return force means a force for pulling the mover 120b toward the reference position (or initial position). That is, the return force may be zero at the reference position, and may increase or decrease as the distance from the reference position toward the top dead center or the bottom dead center, respectively.
  • two types of magnetic fluxes may be formed in the stator 120a and the mover 120b of the present embodiment.
  • One is a magnetic flux forming a magnetic path that bridges the winding coil 125b and may serve to generate the thrust described above. That is, one loop may be formed along the outer stator 121 and the inner stator 122 by the current applied to the winding coil 125b, which generates a thrust for the compression and suction stroke of the mover 120c. can do.
  • the other magnetic flux is formed to revolve around the magnets 124a and 124b of the present embodiment, that is, the first magnet 124a and the second magnet 124b, and in this embodiment, the magnetic flux may be acted to generate a return force.
  • the magnetic flux hovering around the magnets 124a and 124b increases as the magnetic core 123b of the mover 120b moves away from the reference position, so that the amount of exposure to the side of the pole of the stator 120a forming the void 120c increases. Can be. Therefore, the return force generated by the magnetic flux hovering the magnets 124a and 124b tends to increase in absolute value as it moves away from the reference position.
  • the driving unit 120 of the present embodiment has a magnetic energy (magnetic potential energy) when the reciprocating centering force between the stator 120a and the mover 120b moves in the magnetic field.
  • the magnetic force is stored in the lower direction, which is called the reciprocating center force, and this force forms a magnetic resonance spring. Therefore, when the mover 120b reciprocates by the magnetic force, the mover 120b accumulates a force to return to the center direction by the magnetic resonance spring, which causes the mover 120b to perform the resonance movement. You can continue to reciprocate.
  • the compression unit 130 may include a cylinder 131, a piston 132, a suction valve 133, and a discharge valve 134.
  • the compression unit 130 sucks the refrigerant in the internal space 101 into the compression space 103, compresses the refrigerant, and discharges the refrigerant into the discharge space 104.
  • the cylinder 131 is inserted into and supported in the cylinder space 122a of the inner stator 122, and may form a compression space 103 therein.
  • a coating layer (not shown) is formed on an inner circumferential surface of the cylinder space 122a, and a separate cylinder stopper 135 for supporting a rear end of the cylinder 131 on the rear side of the cylinder space 122a. Can be inserted.
  • the cylinder stopper 135 As the cylinder stopper 135 is in close contact with the inner circumferential surface of the inner stator 122, that is, the inner circumferential surface of the cylinder space 122a, the cylinder stopper 135 may be formed of a magnetic material, but may be more preferably formed of a nonmagnetic material in consideration of motor efficiency.
  • the cylinder stopper 135 may be formed by sheet metal processing by a drawing method, or may be molded using a mold.
  • the cylinder 131 is formed in a cylindrical shape with both sides opened, and one end (hereinafter, a front end) of the cylinder 131 may be opened and closed by the discharge valve 134.
  • the discharge space 104 may be formed on the opposite side of the compression space 103 with respect to the discharge valve 134 to accommodate the refrigerant discharged from the compression space 103.
  • the discharge space 104 may be made of one, but in order to effectively reduce the discharge noise, a plurality of discharge spaces 104 may be sequentially communicated.
  • the first discharge space 104a may be formed inside the inner stator 122, that is, the cylinder space 122a, and the second discharge space 104b may be formed outside the inner stator 122.
  • the second discharge space 104b is formed outside the inner stator 122, as the second discharge space 104b is exposed to the outside air, the temperature of the discharged refrigerant may be lowered to increase the compressor efficiency.
  • the cylinder 131 may be formed with a portion of the gas bearing for guiding the refrigerant between the cylinder 131 and the piston 132. That is, a plurality of bearing holes 131a may be formed to penetrate from the outer circumferential surface of the cylinder 131 to the inner circumferential surface to form a part of the gas bearing. Accordingly, a part of the compressed refrigerant is supplied between the cylinder 131 and the piston 132 through the bearing hole 131a, thereby gas lubricating between the cylinder 131 and the piston 132.
  • the piston 132 has a suction passage 102 therein, and may be formed in a cylindrical shape in which the front end is partially open while the rear end is fully open. As described above, the piston 132 may have a rear end, which is an open end, connected to the core holder 123a to reciprocate with the core holder 123a.
  • a plurality of suction ports 132a are formed at the front end of the piston 132 so as to communicate between the suction passage 102 and the compression space 103, and the plurality of suction ports ( A suction valve 133 may be provided to selectively open and close 132a. Accordingly, the refrigerant sucked into the inner space 101 of the casing 110 is opened between the cylinder 131 through the suction flow path 102 and the suction port 132a of the piston 132 while opening the suction valve 133. Can be sucked into the compression space (103).
  • the suction valve 133 may be formed in a disk shape to open and close the plurality of suction ports 132a collectively, and have a petal shape having a plurality of opening and closing portions to individually open and close each suction port 132a. It may be formed as.
  • the suction valve 133 has a fixed portion determined according to the position of the suction port 132a. For example, when the suction port 132a is formed at the edge, the central portion of the suction valve 133 may be fastened by bolts or rivets to the center of the front surface of the piston 132.
  • the discharge valve 134 is elastically supported by the valve spring 134a to open and close the compression space 103 at the front surface of the cylinder 131, and the valve spring 134a is supported by the spring support member 134b. Can be.
  • the support bracket 140 serves to support the compressor main body C by combining the suction pipe 115 and the discharge pipe 116 and is perpendicular to both ends of the horizontal portion 141. It may be formed in a yaw-shaped cross-sectional shape having a portion (142, 143).
  • support holes 142a and 143a into which the discharge pipe 116 and the suction pipe 115 are inserted are formed, respectively, and the support holes 142a ( The discharge pipe 116 and the suction pipe 115 may be inserted into and coupled to the 143a with the buffer members 142b and 143b such as elastic rubber interposed therebetween.
  • the first support spring 145 and the second support spring compression coil spring, respectively ( 146). Accordingly, even if the compressor main body C vibrates in the axial direction, the first support spring 145 and the second support spring 146 elastically absorb it, thereby minimizing the compressor vibration.
  • Reference numeral 150 in the drawings is a heat radiation member.
  • the linear compressor according to the present embodiment as described above is operated as follows.
  • the mover 120b may linearly reciprocate in the air gap 120c between the outer stator 121 and the inner stator 122 by the electromagnetic force generated in the stator 120a of the driving unit 120.
  • the volume of the compression space 103 is increased or decreased.
  • the suction valve 133 is opened so that the refrigerant in the suction flow path 102 is sucked into the compression space 103 through the suction port 132a.
  • the piston 132 compresses the refrigerant in the compression space 103. The compressed refrigerant is discharged into the first discharge space 104a while opening the discharge valve 134.
  • the intermediate housing according to the present embodiment is coupled to the terminal terminal receiving power from the outside, the bobbin is provided with a motor terminal portion for transmitting external power to the winding coil through the terminal terminal portion.
  • FIG. 3 is a perspective view of a bobbin in the linear motor according to FIG. 2, and FIG. 4 is an enlarged perspective view of the motor terminal unit in FIG. 3.
  • the terminal terminal unit 160 is inserted into and coupled to the terminal hole 111a provided in the intermediate housing 111, and is sealingly coupled through the terminal bracket 161.
  • the first terminal 162 may be connected to an external power source.
  • the first terminal 162 a plurality of terminals may be arranged along the axial direction.
  • the first terminal 162 may be formed in a rod shape having a circular cross section, and may be inserted one to one into the second terminal 172 of the motor terminal unit 170 to be described later.
  • the first terminal 162 and the second terminal 172 may be composed of three terminals, respectively, and may be formed of a power terminal, a save turn terminal, and a ground terminal.
  • the motor terminal 170 includes a body 171 extending in the axial direction from the side wall of the bobbin 125a, a plurality of second terminals 172 inserted into the body 171 in the radial direction, and a body. It may include a conductive line 173 embedded in the unit 171 to electrically connect the second terminal 172 to the winding coil 125b.
  • the body portion 171 extends along the axial direction at the second sidewall portion 127c located on the rear side of the plurality of sidewall portions. Accordingly, the motor terminal unit 170 may be formed to be opposite to the compression space 103 with respect to the axial center of the stator 120a. As a result, the motor terminal portion may be less affected by the heat of compression, thereby improving reliability.
  • the body portion 171 may be integrally formed on the second side wall portion 127c or may be separately manufactured and then assembled. In addition, the body 171 may have a connection structure for connecting the second terminal 172 described above to the winding coil 125b.
  • the body portion 171 is formed to be located between the stator cores 126 arranged in the circumferential direction. Accordingly, the body portion 171 may be formed in a triangular cross-sectional shape in which the axial length is larger than the circumferential length and the cross sectional area is narrowed toward the center of the bobbin 125a.
  • a support protrusion 171a may be formed to protrude in a radial direction on the radially outer circumferential surface of the body 171 to support the closed surface 172c of the second terminal 172 to be described later. Accordingly, when the first terminal 162 and the second terminal 172 are coupled to each other, the first terminal 162 and the first terminal 162 are prevented from being damaged due to excessive movement of the first terminal 162. The two terminals 172 can be accurately aligned.
  • a plurality of second terminals 172 are provided in the body portion 171 along the axial direction.
  • the plurality of second terminals 172 are arranged on the same line.
  • the second terminals 172 are formed in the same number as the first terminals 162 so as to correspond to the first terminals 162, respectively.
  • At least one of the plurality of second terminals 172 is formed to be located within an axial range of the stator core 126. However, it is preferable that the plurality of second terminals 172 are all formed within the axial range of the stator core 126 because the length of the linear motor can be minimized.
  • each of the second terminals 172 is formed with contact surfaces 172a on both sides in the horizontal direction, and an opening surface 172b with openings in both axial directions between the two contact surfaces 172a.
  • the second terminal 172 positioned at the end of the plurality of second terminals 172 that is, the second terminal 172 closest to the second sidewall portion 127c of the bobbin 125a, is closed with the bobbin side closed. Face 172c is formed.
  • the first terminal 162 enters between the two contact surfaces 172a through the opening surface 172b between the two contact surfaces 172a constituting the second terminal 172, moves along the axial direction, and then moves to the head first.
  • the movement of one terminal 162 is limited by the closing surface 172c of the last second terminal 172.
  • Both contact surfaces 172a of the second terminal 172 are each formed with at least one or more slits 129b1 cut in the longitudinal direction. Accordingly, when the first terminal 162 passes through the opening surface 172b between the two contact surfaces 172a constituting the second terminal 172, each contact surface 172a is elastically opened and then the first terminal ( When the entry between the contact surfaces 162 is completed, the first terminal 162 is firmly grasped while being elastically restored. As a result, the first terminal 162 can be suppressed from being separated from the second terminal 172 due to vibration during operation of the compressor.
  • the conductive wire 173 is a kind of lead wire, and may be embedded in the body portion 171. Accordingly, the conductive wire 173 of the present embodiment may be made of a concealed conductive wire. However, in some cases, it may be exposed to the outside of the body portion 171. However, the conductive wire 173 according to the present embodiment may directly connect between the second terminal 172 and the winding coil 125b.
  • reference numeral 171b is a slit for elastically supporting the motor terminal portion to the stator core adjacent to the first direction
  • 171c is a guide for elastically supporting the motor terminal portion to the stator core adjacent to the second direction.
  • FIG. 5 is a schematic view showing a process of assembling the intermediate housing and the stator according to the present embodiment
  • FIGS. 6A and 6B are enlarged cross-sectional views illustrating a state in which the first terminal and the second terminal are connected in the assembling process according to FIG. 5. to be.
  • the intermediate housing 111 is axially pushed into the compressor main body C including the stator 121. Then, the outer peripheral surface of the stator 121 is inserted into and fixed to the inner peripheral surface of the intermediate housing 111.
  • the terminal housing 160 is provided in the intermediate housing 111, and the motor terminal 170 is provided in the bobbin 125a forming the stator, so that the intermediate housing 111 slides into the compressor main body C.
  • the first terminal 162 of the terminal terminal 160 may be inserted into the second terminal 172 of the motor terminal 170 to be electrically connected.
  • the terminal closest to the bobbin 125a among the first terminals 162 of the terminal terminal part 160 is the motor terminal part (
  • the second terminal 172 of 170 is in contact with the terminal furthest from the bobbin 125a.
  • the first terminal 162 passes through the right opening surface 172b of the second terminal 172 to move toward the left opening surface 172b. Done. This proceeds sequentially until the first terminal 162 and the second terminal 172 are connected one-to-one, as shown in FIG. 6B.
  • the first terminal 162 has a rod shape having a circular cross section, when the first terminal 162 passes through the opening surface of the second terminal 172, the first terminal 162 does not have a wide interval between the opening surfaces.
  • the terminal 162 may smoothly pass through the opening surface 172b of the second terminal 172.
  • the contact surface 172a of the second terminal 172 is bent and elastically opened. Subsequently, when the first terminal 162 is completely positioned between the contact surfaces 172a of the second terminal 172, the contact surface 172a surrounds the first terminal 162 with respect to the slit 172a1. do. Then, the first terminal 162 may be relatively firmly coupled to the second terminal 172. Then, even when vibration occurs during operation of the compressor, the first terminal 162 may be effectively suppressed from being spaced apart from the second terminal 172.
  • the terminal closest to the second sidewall portion 127c of the bobbin 125a that is, the terminal located at the innermost side of the second terminal 172, is formed with the closing surface 172c in the axial direction, thereby providing the first terminal.
  • the extent to which 162 is inserted is limited. Accordingly, when the intermediate housing 111 is inserted into the compressor main body C, the intermediate housing 111 is excessively inserted or insufficiently inserted so that the first terminal 162 and the second terminal 172 are misaligned. To prevent it.
  • the terminal terminal part is formed in the intermediate housing, the motor terminal part including the conductor is formed in the bobbin, respectively, and the terminal terminal part and the motor terminal part are separately separated by directly connecting the first terminal of the terminal terminal part and the second terminal of the motor terminal part. There is no need to connect with exposed leadwires.
  • the exposed lead wire can be lowered, but also the exposed lead wire can be prevented from being worn while being rubbed with the peripheral member due to the vibration during the compressor operation, thereby increasing the reliability.
  • the terminal terminal part is provided in the intermediate housing, and the motor terminal part is provided in the bobbin, so that the first terminal of the terminal terminal part is inserted into the second terminal of the motor terminal part in the process of inserting the intermediate housing into the compressor main body. It was to make it possible.
  • the terminal terminal portion is provided in the front housing, the motor terminal portion is provided in the bobbin.
  • the terminal terminal 160 is provided in the front housing 112
  • the motor terminal 170 may be provided in the first side wall portion 127b of the bobbin 125a.
  • the second terminal 172 may be formed in a general socket shape having an opening surface in the axial direction. Can be.
  • first terminal 162 of the terminal terminal 160 and the second terminal 172 of the motor terminal 170 may be arranged along the radial direction, respectively, but the radial space between the stator cores is increased. Therefore, they may be arranged in the transverse or circumferential direction.
  • the drawing shows an example in which two first terminals 162 and two second terminals 172 are provided in the circumferential direction, respectively. However, when there are three first terminals 162 and three second terminals 172, two may be arranged outside and one inside, and thus may be arranged in a triangle shape.
  • the motor having the first terminal of the terminal terminal part provided in the front housing in the process of coupling the front housing to the intermediate housing is provided.
  • the terminal terminal portion and the motor terminal portion may be electrically connected while being inserted into the second terminal of the terminal portion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)

Abstract

Un compresseur linéaire selon la présente invention comprend : un cylindre dans lequel est ménagé un espace de compression ; un piston qui forme l'espace de compression conjointement avec le cylindre tout en effectuant un mouvement alternatif axial à l'intérieur du cylindre ; un dispositif de déplacement accouplé au piston et transférant une force d'entraînement au piston ; et un stator qui comprend un serpentin enroulé sur une bobine et une pluralité de noyaux de stator empilés sur la bobine, et qui génère la force d'entraînement conjointement avec le dispositif de déplacement. La bobine peut comprendre : une partie enroulement de serpentin qui est formée sous une forme annulaire et autour de laquelle le serpentin est enroulé le long de la direction circonférentielle ; et une partie borne de moteur qui est disposée dans la partie enroulement de bobine et dans laquelle une pluralité de secondes bornes sont agencées le long de la direction axiale.
PCT/KR2019/006928 2018-06-15 2019-06-10 Compresseur linéaire Ceased WO2019240442A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180069187A KR20190142097A (ko) 2018-06-15 2018-06-15 리니어 압축기
KR10-2018-0069187 2018-06-15

Publications (1)

Publication Number Publication Date
WO2019240442A1 true WO2019240442A1 (fr) 2019-12-19

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PCT/KR2019/006928 Ceased WO2019240442A1 (fr) 2018-06-15 2019-06-10 Compresseur linéaire

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WO (1) WO2019240442A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240097550A (ko) * 2022-12-20 2024-06-27 한온시스템 주식회사 전동 압축기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100690152B1 (ko) * 2006-01-16 2007-03-08 엘지전자 주식회사 리니어 압축기의 제어유닛
KR100712914B1 (ko) * 2005-11-10 2007-05-02 엘지전자 주식회사 리니어 압축기
KR20160005516A (ko) * 2014-07-07 2016-01-15 엘지전자 주식회사 리니어 압축기 및 리니어 모터
KR20160010984A (ko) * 2014-07-21 2016-01-29 엘지전자 주식회사 리니어 압축기 및 리니어 모터
US20170321683A1 (en) * 2016-05-03 2017-11-09 Lg Electronics Inc. Linear compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100712914B1 (ko) * 2005-11-10 2007-05-02 엘지전자 주식회사 리니어 압축기
KR100690152B1 (ko) * 2006-01-16 2007-03-08 엘지전자 주식회사 리니어 압축기의 제어유닛
KR20160005516A (ko) * 2014-07-07 2016-01-15 엘지전자 주식회사 리니어 압축기 및 리니어 모터
KR20160010984A (ko) * 2014-07-21 2016-01-29 엘지전자 주식회사 리니어 압축기 및 리니어 모터
US20170321683A1 (en) * 2016-05-03 2017-11-09 Lg Electronics Inc. Linear compressor

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