WO2018143592A1 - Compresseur linéaire - Google Patents

Compresseur linéaire Download PDF

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Publication number
WO2018143592A1
WO2018143592A1 PCT/KR2018/000969 KR2018000969W WO2018143592A1 WO 2018143592 A1 WO2018143592 A1 WO 2018143592A1 KR 2018000969 W KR2018000969 W KR 2018000969W WO 2018143592 A1 WO2018143592 A1 WO 2018143592A1
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WO
WIPO (PCT)
Prior art keywords
piston
guide
suction
valve
refrigerant
Prior art date
Application number
PCT/KR2018/000969
Other languages
English (en)
Korean (ko)
Inventor
배상현
오원식
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to CN201880008237.0A priority Critical patent/CN110234875A/zh
Publication of WO2018143592A1 publication Critical patent/WO2018143592A1/fr

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    • 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
    • F04B39/10—Adaptations or arrangements of distribution members

Definitions

  • the present invention relates to a linear compressor.
  • a compressor is a mechanical device that increases power by compressing air, refrigerant, or other various working gases by receiving power from a power generator such as an electric motor or a turbine. It is used.
  • compressors can be broadly classified into reciprocating compressors for compressing refrigerant while the piston reciprocates linearly within the cylinders by forming a compression space in which the working gas is sucked or discharged between the piston and the cylinder.
  • a rotary compressor and orbiting scroll (Orbiting) for compressing the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder is formed between the roller and the eccentric rotating roller and the cylinder is formed.
  • a compression space in which working gas is sucked or discharged is formed between the scroll and the fixed scroll, and the rotating scroll rotates along the fixed scroll and may be divided into a scroll compressor that compresses the refrigerant.
  • the linear compressor is configured to suck, compress and then discharge the refrigerant while the piston is reciprocally linearly moved inside the cylinder by the linear motor inside the sealed shell.
  • the linear motor is configured such that a permanent magnet is positioned between the inner stator and the outer stator, and the permanent magnet is driven to linearly reciprocate by mutual electromagnetic force between the permanent magnet and the inner (or outer) stator. Then, as the permanent magnet is driven in a state connected to the piston, the piston sucks and compresses the refrigerant while discharging the refrigerant while reciprocating linearly inside the cylinder.
  • the suction valve of the linear compressor disclosed in Korean Patent Laid-Open No. 2006-0091645 (August 21, 2006) has a structure fixed to the front surface of a piston by a fastening member such as a bolt.
  • the central portion of the suction valve is fixed to the piston by the head of the bolt.
  • the linear compressor disclosed in the above-described prior art has a structure in which the central portion of the intake valve is strongly fixed to the front surface of the piston by bolts. Therefore, in order for the refrigerant flowing into the piston to flow into the compression space, the refrigerant suctioned into the piston must have a force enough to cause deformation of the suction valve.
  • the initial response performance of the intake valve is lowered, which may cause a problem that the compressor of the refrigerant starts in a state in which a sufficient amount of the refrigerant does not flow into the compression space.
  • the present invention is proposed to improve the above problems.
  • Linear compressor for achieving the above object, the cylinder to form a refrigerant compression space therein; A piston inserted into the cylinder and expanding or compressing the compression space while reciprocating in the axial direction of the cylinder, the piston having a plurality of suction holes formed on its front surface; A suction valve coupled to the front surface of the piston to selectively open and close the plurality of suction holes; A guide inserted into the piston through a center of the suction valve; And a body portion inserted into the guide, and a head portion comprising a fastening member caught by the front end portion of the guide, wherein the guide protrudes from the front side of the piston, and the suction valve is formed when the piston reciprocates linearly. It is characterized in that the relative movement in the direction opposite to the movement direction of the piston along the guide by the inertia.
  • the suction valve when the piston is retracted to introduce refrigerant into the refrigerant compression space, the suction valve is separated from the front surface of the piston to open the plurality of suction holes, and to compress the refrigerant introduced into the refrigerant compression space.
  • the suction valve When the piston is advanced, the suction valve is in close contact with the front of the piston is characterized in that for closing the plurality of suction holes.
  • the protruding length of the guide is characterized in that greater than at least the thickness of the intake valve.
  • the guide may include a guide body in which an insertion hole for inserting the body of the fastening member is formed, and protrudes from an outer circumferential surface of the guide body to prevent the suction valve from rotating about the guide body. And one or more anti-rotation ribs.
  • the suction valve may include a valve body having a through hole for penetrating the guide part at a center thereof, and a plurality of flaps extending radially from an edge of the valve body to selectively open and close the plurality of suction holes. Can be.
  • Each of the plurality of flaps includes an outer region for shielding at least a portion of the plurality of suction holes, and an inner region in which an opening is formed to facilitate bending of the flap.
  • the through hole is characterized in that the same shape as the cross-sectional shape of the guide.
  • the suction valve opens the suction hole while moving in the direction opposite to the direction of movement of the piston by inertia, and thus the initial response of the valve. It has the effect of improving performance.
  • the suction valve opens the suction hole by the inertia at the initial stage of the refrigerant suction, it is possible to reduce the flow loss of the refrigerant, and since the suction valve is bent as in the past, the opening amount of the suction hole is sufficiently secured. have.
  • the anti-rotation rib structure protruding on the outer circumferential surface of the guide allows the suction valve to move relative to the piston in the front-rear direction along the guide, and prevents the phenomenon of turning in the circumferential direction of the piston.
  • FIG. 1 is a perspective view showing the configuration of a linear compressor according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of a shell and a shell cover of the linear compressor according to the embodiment of the present invention.
  • FIG 3 is an exploded perspective view of a main body of a linear compressor according to an embodiment of the present invention.
  • FIG. 4 is a longitudinal sectional view of the linear compressor according to the embodiment of the present invention cut along the line II ′ of FIG. 1.
  • FIG 5 is a perspective view of a guide constituting the linear compressor according to the embodiment of the present invention.
  • FIG. 6 is a perspective view of a suction valve of the linear compressor according to the embodiment of the present invention.
  • FIG. 1 is an external perspective view showing the configuration of a linear compressor according to an embodiment of the present invention
  • Figure 2 is an exploded perspective view of the shell and shell cover of the linear compressor according to an embodiment of the present invention.
  • the linear compressor 10 may include a shell 101 and a shell cover coupled to the shell 101.
  • the shell cover may include a first shell cover 102 and a second shell cover 103.
  • the leg 50 may be coupled to the lower side of the shell 101.
  • the leg 50 may be coupled to a base of a product on which the linear compressor 10 is installed.
  • the product may include a refrigerator, and the base may include a machine room base of the refrigerator.
  • the product may include an outdoor unit of an air conditioner, and the base may include a base of the outdoor unit.
  • the shell 101 is formed in a cylindrical shape, and when the linear compressor 10 is installed in the machine room base of the refrigerator, there is an advantage that the height of the machine room can be reduced.
  • a terminal block 108 may be installed on the outer surface of the shell 101.
  • the terminal block 108 may be understood as a connection for transmitting external power to the motor assembly 140 of the linear compressor (see FIG. 3).
  • a bracket 109 is provided on the outside of the terminal 108.
  • the bracket 109 may perform a function of protecting the terminal 108 from an external shock or the like.
  • Both sides of the shell 101 are configured to be open.
  • the first and second shell covers 102 and 103 may be coupled to both ends of the opened shell 101.
  • the shell covers 102 and 103 the inner space of the shell 101 may be sealed.
  • the first shell cover 102 may be located at the right side of the linear compressor 10, and the second shell cover 103 may be located at the left side of the linear compressor 10. .
  • the first and second shell covers 102 and 103 may be disposed to face each other.
  • the linear compressor 10 may further include a plurality of pipes 104, 105, and 106 provided in the shell 101 or the shell covers 102 and 103 to suck and discharge the refrigerant.
  • the plurality of pipes 104, 105 and 106 may include a suction pipe 104 for allowing refrigerant to be sucked into the linear compressor 10 and a discharge pipe 105 for allowing the compressed refrigerant to be discharged from the linear compressor 10. And a process pipe 106 for replenishing the refrigerant to the linear compressor 10.
  • the suction pipe 104 may be coupled to the first shell cover 102.
  • the refrigerant may be sucked into the linear compressor 10 along the axial direction through the suction pipe 104.
  • the discharge pipe 105 may be coupled to an outer circumferential surface of the shell 101.
  • the refrigerant sucked through the suction pipe 104 may be compressed while flowing in the axial direction.
  • the compressed refrigerant may be discharged through the discharge pipe 105.
  • the discharge pipe 105 may be disposed at a position closer to the second shell cover 103 than the first shell cover 102.
  • the process pipe 106 may be coupled to an outer circumferential surface of the shell 101.
  • the worker may inject refrigerant into the linear compressor 10 through the process pipe 106.
  • the process pipe 106 may be coupled to the shell 101 at a different height than the discharge pipe 105 to avoid interference with the discharge pipe 105.
  • the height is understood as the distance in the vertical direction (or radial direction) from the leg 50. Since the discharge pipe 105 and the process pipe 106 are coupled to the outer circumferential surface of the shell 101 at different heights, the worker may be more comfortable working.
  • a cover support portion 102a On the inner surface of the first shell cover 102, a cover support portion 102a is provided.
  • a second support device 185 to be described later may be coupled to the cover support part 102a.
  • the cover support part 102a and the second support device 185 may be understood as devices for supporting the main body of the linear compressor 10.
  • the main body of the compressor means a set of components provided inside the shell 101, and may include, for example, a driving unit for back and forth reciprocating motion and a support for supporting the driving unit.
  • the driving unit may include components such as a piston 130, a magnet frame 138, a permanent magnet 146, a supporter 137, a suction muffler 150, and the like.
  • the support part may include components such as resonant springs 176a and 176b, a rear cover 170, a stator cover 149, a first support device 165, a second support device 185, and the like.
  • a stopper 102b may be provided on the inner side surface of the first shell cover 102.
  • the stopper 102b is understood as a structure that prevents the main body of the compressor, in particular the motor assembly 140 from colliding with the shell 101 and being damaged by vibration or shock generated during transportation of the linear compressor 10. do.
  • the stopper 102b is located adjacent to the rear cover 170, which will be described later, and when the linear compressor 10 is shaken, the rear cover 170 interferes with the stopper 102b, whereby the motor Impact may be prevented from being transmitted to the assembly 140.
  • a spring fastening portion 101a On the inner circumferential surface of the shell 101, a spring fastening portion 101a may be provided.
  • the spring fastening portion 101a may be disposed at a position adjacent to the second shell cover 103.
  • a first support spring 166 of the first support device 165 to be described later may be coupled to the spring fastening portion 101a.
  • FIG. 3 is an exploded perspective view of a main body of a linear compressor according to an embodiment of the present invention
  • FIG. 4 is a longitudinal sectional view of the linear compressor according to the embodiment of the present invention cut along the line II ′ of FIG. 1.
  • the main body of the linear compressor 10 according to the embodiment of the present invention provided inside the shell 101 is fitted to the frame 110 and the center of the frame 110.
  • the losing cylinder 120 may include a piston 130 which reciprocates linearly in the cylinder 120, and a motor assembly 140 which imparts a driving force to the piston 130.
  • the motor assembly 140 may be a linear motor that linearly reciprocates the piston 130 in the axial direction of the shell 101.
  • the linear compressor 10 may further include a suction muffler 150.
  • the suction muffler 150 is coupled to the piston 130 and is provided to reduce noise generated from the refrigerant sucked through the suction pipe 104.
  • the refrigerant sucked through the suction pipe 104 flows into the piston 130 through the suction muffler 150.
  • the flow noise of the refrigerant may be reduced.
  • the suction muffler 150 may include a plurality of mufflers.
  • the plurality of mufflers may include a first muffler 151, a second muffler 152, and a third muffler 153 that are coupled to each other.
  • the first muffler 151 is located inside the piston 130, and the second muffler 152 is coupled to a rear end of the first muffler 151.
  • the third muffler 153 may accommodate the second muffler 152 therein, and a front end portion may be coupled to a rear end of the first muffler 151.
  • the refrigerant sucked through the suction pipe 104 may pass through the third muffler 153, the second muffler 152, and the first muffler 151 in order. In this process, the flow noise of the refrigerant can be reduced.
  • the suction muffler 150 may be equipped with a muffler filter 153.
  • the muffler filter 153 may be located at an interface at which the first muffler 151 and the second muffler 152 are coupled.
  • the muffler filter 153 may have a circular shape, and an edge of the muffler filter 153 may be supported between the coupling surfaces of the first and second mufflers 151 and 152.
  • axial direction may be understood as a direction coinciding with a direction in which the piston 130 reciprocates, and an extension direction of a longitudinal central axis of the cylindrical shell 101.
  • the direction from the suction pipe 104 toward the compression space P that is, the direction in which the refrigerant flows, is called “frontward direction”, and the opposite direction is “rearward.” direction) ".
  • the "radial direction” is a radial direction of the shell 101, it may be defined as a direction orthogonal to the direction in which the piston 130 reciprocates.
  • the piston 130 may include a substantially cylindrical piston body 131, and a piston flange portion 132 extending radially from the rear end of the piston body 131.
  • the piston body 131 may reciprocate in the cylinder 120, and the piston flange 132 may reciprocate in the outer side of the cylinder 120.
  • the piston body 131 is configured to receive at least a portion of the first muffler 151.
  • a compression space P through which the refrigerant is compressed by the piston 130 is formed inside the cylinder 120.
  • a fastening groove 136 into which the fastening member 22 is inserted is formed at the center of the front portion of the piston body 131.
  • a plurality of suction holes 133 are formed at points spaced apart from the fastening groove 136 by a predetermined distance in the radial direction.
  • the fastening groove 136 is formed in the form of an extended groove extending radially from the center of the circle, which forms the same shape as the cross-sectional shape of the guide 21 to be described later.
  • the plurality of suction holes 133 are spaced apart in the circumferential direction of the piston 130, and the refrigerant flows into the compression space P through the plurality of suction holes 133.
  • the plurality of suction holes 133 may be spaced apart at regular intervals in the circumferential direction of the front portion of the piston 130, as shown in the figure may be formed of a plurality of groups. That is, the separation distance between the plurality of suction holes 133 belonging to one group may be smaller than the separation distance from the other group.
  • a suction valve 20 for selectively opening the suction hole 133 is provided in front of the suction hole 133.
  • suction valve 20 is fixed to the front surface of the piston body 131 by a fastening member 22 such as a screw or bolt.
  • the linear compressor 10 may further include a guide 21 penetrating the center of the suction valve 20 and inserted into the insertion groove 136.
  • the fastening member 22 may be inserted into the piston 130 through the inside of the guide 21.
  • the suction valve 20 is prevented from turning in the circumferential direction of the piston by the cross-sectional shape of the guide 21, and the suction valve 20 moves in the longitudinal direction of the guide 21. Possibly assembled.
  • the discharge cover 190 for forming a discharge space of the refrigerant discharged from the compression space (P), and coupled to the discharge cover 190 and the compression space (P) Discharge valve assemblies 161 and 163 for discharging the compressed refrigerant into the discharge space are provided.
  • the discharge cover 190 may be provided in a form in which a plurality of covers are stacked.
  • the discharge valve assembly may include a discharge valve 161 and a spring assembly 163 which provides an elastic force in a direction in which the discharge valve 161 is in close contact with the front end of the cylinder 120.
  • the discharge valve 161 is separated from the front surface of the cylinder 120 when the pressure of the compression space P becomes equal to or greater than the discharge pressure, and the compressed refrigerant is defined by the discharge cover 190. Discharge into the discharge space.
  • the spring assembly 163 When the pressure of the compression space P is greater than or equal to the discharge pressure, the spring assembly 163 is contracted to allow the discharge valve 161 to be spaced apart from the front end of the cylinder 120.
  • the spring assembly 163 includes a valve spring 163a and a spring support 163b for supporting the valve spring 163a to the discharge cover 190.
  • the valve spring 163a may include a leaf spring.
  • the discharge valve 161 is coupled to the valve spring 163a, and the rear or rear surface of the discharge valve 161 is closely supported on the front surface (or front end) of the cylinder 120.
  • the compression space (P) When the discharge valve 161 is supported on the front surface of the cylinder 120, the compression space (P) maintains a closed state, and when the discharge valve 161 is spaced apart from the front surface of the cylinder 120, the compression The space P is opened, and the compressed refrigerant in the compression space P may be discharged.
  • the compression space P is understood as a space formed between the intake valve 20 and the discharge valve 161.
  • the intake valve 20 is formed at one side of the compression space P
  • the discharge valve 161 is provided at the other side of the compression space P, that is, the opposite side of the intake valve 20. Can be.
  • the suction valve 20 is opened when the pressure of the compression space P becomes less than or equal to the suction pressure of the refrigerant, and the refrigerant is Flows into the compression space (P).
  • the valve spring 163a is deformed forward and the discharge valve 161 is separated from the cylinder 120.
  • the refrigerant in the compression space P is discharged into the discharge space through a gap between the discharge valve 161 and the cylinder 120.
  • valve spring 163a When the discharge of the refrigerant is completed, the valve spring 163a provides a restoring force to the discharge valve 161 so that the discharge valve 161 is in close contact with the front end of the cylinder 120 again.
  • the linear compressor 10 may further include a cover pipe 162a.
  • the cupper pipe 162a is coupled to the discharge cover 190 and discharges the refrigerant flowing into the discharge space formed in the discharge cover 190 to the outside.
  • the linear compressor 10 may further include a loop pipe 162b.
  • One end of the roof pipe 162b is coupled to the discharge end of the cover pipe 162a and the other end is connected to the discharge pipe 105 formed in the shell 101.
  • the roof pipe 162b is made of a flexible material and may be formed to be relatively longer than the cover pipe 162a. In addition, the roof pipe 162b may extend roundly from the cover pipe 162a along the inner circumferential surface of the shell 101 to be coupled to the discharge pipe 105.
  • the frame 110 may be understood as a configuration for fixing the cylinder 120.
  • the cylinder 120 may be press-fitted to the center of the frame 110.
  • the discharge cover 190 may be coupled to the front surface of the frame 110 by a fastening member.
  • the motor assembly 140 includes an outer stator 141 fixed to the frame 110 and disposed to surround the cylinder 120, and an inner stator 148 spaced apart from the inner stator 141. And a permanent magnet 146 positioned in a space between the outer stator 141 and the inner stator 148.
  • the permanent magnet 146 may linearly reciprocate by mutual electromagnetic force between the outer stator 141 and the inner stator 148.
  • the permanent magnet 146 may be composed of a single magnet having one pole or a plurality of magnets having three poles are combined.
  • the permanent magnet 146 may be installed in the magnet frame 138.
  • the magnet frame 138 has a substantially cylindrical shape and may be disposed to be inserted into a space between the outer stator 141 and the inner stator 148.
  • the magnet frame 138 may be coupled to the piston flange 132 and extend forward (axial direction).
  • the permanent magnet 146 may be attached to the front end of the magnet frame 138 or to the outer circumferential surface of the magnet frame 138.
  • the piston 130 may reciprocate in the axial direction with the permanent magnet 146 in one body.
  • the outer stator 141 may include coil windings 141b, 141c, and 141d and a stator core 141a.
  • the coil windings 141b, 141c and 141d may include a bobbin 141b and a coil 141c wound in the circumferential direction of the bobbin.
  • the coil windings 141b, 141c, and 141d may further include a terminal unit 141d for guiding the power line connected to the coil 141c to be drawn or exposed to the outside of the outer stator 141. have.
  • the stator core 141a may include a plurality of core blocks configured by stacking a plurality of laminations in a circumferential direction.
  • the plurality of core blocks may be arranged to surround at least a portion of the coil windings 141b and 141c.
  • the stator cover 149 is provided at one side of the outer stator 141. That is, one side of the outer stator 141 may be supported by the frame 110, and the other side thereof may be supported by the stator cover 149.
  • the linear compressor 10 may further include a cover fastening member 149a for fastening the stator cover 149 and the frame 110.
  • the cover fastening member 149a extends forwardly toward the frame 110 through the stator cover 149 and may be coupled to the frame 110.
  • the inner stator 148 is fixed to the outer circumference of the frame 110.
  • the inner stator 148 is configured by stacking a plurality of laminations in the circumferential direction from the outside of the frame 110.
  • the linear compressor 10 may further include a supporter 137 supporting the rear end of the piston 130.
  • the supporter 137 may be coupled to the rear side of the piston 130, and a hollow portion may be formed inside the supporter 137 to allow the muffler 150 to pass therethrough.
  • the piston flange portion 132, the magnet frame 138 and the supporter 137 may be coupled to one body by a fastening member.
  • the balance weight 179 may be coupled to the supporter 137.
  • the weight of the balance weight 179 may be determined based on the operating frequency range of the compressor body.
  • the linear compressor 10 may further include a rear cover 170.
  • the rear cover 170 is coupled to the stator cover 149 and extends rearward, and is supported by the second support device 185.
  • the rear cover 170 may include three support legs, and the three support legs may be coupled to the rear surface of the stator cover 149.
  • a spacer 181 may be interposed between the three support legs and the rear surface of the stator cover 149. The distance from the stator cover 149 to the rear end of the rear cover 170 may be determined by adjusting the thickness of the spacer 181.
  • the rear cover 170 may be spring-supported to the supporter 137.
  • the linear compressor 10 may further include an inflow guide unit 156 coupled to the rear cover 170 to guide the inflow of the refrigerant into the muffler 150. At least a portion of the inflow guide 156 may be inserted into the suction muffler 150.
  • the linear compressor 10 may include a plurality of resonant springs in which natural frequencies are adjusted to allow the piston 130 to resonate.
  • the plurality of resonant springs may include a plurality of first resonant springs 176a supported between the supporter 137 and the stator cover 149, and between the supporter 137 and the rear cover 170. It may include a plurality of second resonant spring (176b) supported.
  • the supporter 137 may include a first spring support 137a coupled to the first resonant spring 176a.
  • the linear compressor 10 may include a plurality of sealing members 127, 128, 129a, and 129b for increasing the coupling force between the frame 110 and the components around the frame 110.
  • the plurality of sealing members 127, 128, 129a, and 129b may include a first sealing member 127 provided at a portion at which the frame 110 and the discharge cover 200 are coupled to each other.
  • the plurality of sealing members 127, 128, 129a and 129b may further include a second sealing member 128 provided at a portion at which the frame 110 and the cylinder 120 are coupled to each other.
  • the plurality of sealing members 127, 128, 129a and 129b may further include a third sealing member 129a provided between the cylinder 120 and the frame 110.
  • the plurality of sealing members 127, 128, 129a and 129b may further include a fourth sealing member 129b provided at a portion at which the frame 110 and the inner stator 148 are coupled to each other.
  • the first to fourth sealing members 127, 128, 129a and 129b may have a ring shape.
  • the linear compressor 10 may further include a first support device 165 for supporting the front end of the main body of the compressor 10.
  • the first support device 165 is coupled to the support coupling portion 290 of the discharge cover 200.
  • the first support device 165 may be disposed adjacent to the second shell cover 103 to elastically support the main body of the compressor 10.
  • the first support device 165 may include a first support spring 166, and the first support spring 166 may be coupled to the spring fastening portion 101a.
  • the linear compressor 10 may further include a second support device 185 for supporting a rear end of the main body of the compressor 10.
  • the second support device 185 is coupled to the rear cover 170.
  • the second support device 185 may be coupled to the first shell cover 102 to elastically support the main body of the compressor 10.
  • the second support device 185 may include a second support spring 186, and the second support spring 186 may be coupled to the cover support 102a.
  • FIG 5 is a perspective view of a guide constituting the linear compressor according to the embodiment of the present invention.
  • the guide 21 constituting the linear compressor according to an embodiment of the present invention includes a cylindrical guide body 211 having an insertion hole 212 formed therein, and the guide body 211. It may include a pair of anti-rotation ribs 213 extending radially from the outer peripheral surface of the.
  • the body portion of the fastening member 22 is inserted into the insertion hole 212, and the pair of anti-rotation ribs 213 are formed at positions facing each other and placed on the same plane.
  • the pair of anti-rotation ribs 213 may extend in a length from the front end to the rear end of the guide body 211.
  • the anti-rotation ribs 213 are not necessarily formed at positions where the pair faces each other. That is, a single anti-rotation rib 213 may protrude on the outer circumferential surface of the guide body 211, or three or more anti-rotation ribs 213 may be formed on the outer circumferential surface of the guide body 211. However, it is sufficient that the suction valve 20 has a structure capable of preventing the phenomenon of turning around the guide 21.
  • the length (or height) from the front of the piston 130 to the front end of the guide 21 is It is formed at least larger than the thickness of the intake valve 20.
  • FIG. 6 is a perspective view of a suction valve constituting a linear compressor according to an embodiment of the present invention.
  • the suction valve 20 of the linear compressor 10 includes a valve body 201 having a guide through hole 204 formed in a central portion thereof, and the valve body 201. It may include a plurality of flaps 202 extending radially from the edge of the.
  • the guide through hole 204 has a shape corresponding to the cross-sectional shape of the guide 21, so that the guide 21 can penetrate the intake valve 20.
  • the suction valve 20 is movable in the longitudinal direction of the guide 21 in a state of being fitted to the outer circumferential surface of the guide 21, but the circumferential rotation is impossible.
  • the plurality of flaps 202 is provided to open and close the plurality of suction holes 133 formed in the piston 130, the plurality of flaps 202 through the suction hole 133 in the compression space (P) ) It is made of flexible material which can be bent by the pressure of refrigerant discharged inside.
  • the flap 202 may be divided into an outer region that shields the suction hole 133 and an inner region between the outer region and the valve body 201, and an opening 203 in the inner region. Can be formed.
  • the opening 203 is formed in the flap 202 to further facilitate the bending of the flap 202.
  • one flap 202 may be formed to open and close one or a plurality of suction holes (133).
  • a plurality of suction holes 133 may form a group, and a plurality of suction hole groups may be formed in the piston 130. Then, the flap 202 may be formed in a number corresponding to the number of the suction hole group, one flap 202 may be formed to open and close one suction hole group.
  • one flap 202 may be formed to open and close one suction hole 133.
  • the suction valve 20 remains completely in contact with the front surface of the piston 130 until the piston 130 retreats for the refrigerant suction.
  • the suction valve 20 is moved relative to the head of the fastening member 22. In this state, the refrigerant is discharged into the compression space P through the suction hole 133.
  • the flap 202 constituting the intake valve 20 is formed.
  • the outer region is bent forward as shown by inertia.
  • the flap 202 is bent while the refrigerant discharged from the suction hole 133 strikes the rear surface of the outer region of the flap 202.
  • the curved flap 202 is flat again, and the suction valve 20 comes into close contact with the front surface of the piston 130. do.
  • the suction hole 133 is closed by the flap 202 of the suction valve 20 to stop the refrigerant flow.
  • the protruding length of the guide 21 may be designed to be slightly longer than the thickness of the intake valve 20.

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  • General Engineering & Computer Science (AREA)
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  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Compresseur linéaire selon un mode de réalisation de la présente invention caractérisé en ce qu'il comprend : un cylindre ayant un espace de compression de fluide frigorigène formé à l'intérieur de celui-ci ; un piston qui est introduit dans le cylindre et dilate ou comprime l'espace de compression tout en étant animé d'un mouvement de va-et-vient dans la direction axiale du cylindre, le piston comportant une pluralité de trous d'aspiration formés dans une surface avant de celui-ci ; une soupape d'aspiration qui est accouplée à la surface avant du piston et ouvre et ferme de manière sélective la pluralité de trous d'aspiration ; un guide qui passe à travers le centre de la soupape d'aspiration et qui est introduit dans le piston ; et un élément de fixation qui comporte une partie corps qui est introduite dans le guide et une partie tête qui est accrochée à une extrémité avant du guide, le guide faisant saillie à partir de la surface avant du piston, et lorsque le piston effectue un mouvement de va-et-vient linéaire, la soupape d'aspiration, en raison de l'inertie, se déplace le long du guide dans la direction opposée par rapport à la direction de déplacement du piston.
PCT/KR2018/000969 2017-02-02 2018-01-23 Compresseur linéaire WO2018143592A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880008237.0A CN110234875A (zh) 2017-02-02 2018-01-23 线性压缩机

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KR1020170014830A KR20180089984A (ko) 2017-02-02 2017-02-02 리니어 압축기
KR10-2017-0014830 2017-02-02

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KR (1) KR20180089984A (fr)
CN (1) CN110234875A (fr)
WO (1) WO2018143592A1 (fr)

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CN112983786A (zh) * 2021-03-18 2021-06-18 珠海格力节能环保制冷技术研究中心有限公司 一种排气结构、压缩机及包括该压缩机的电器产品
US11885325B2 (en) 2020-11-12 2024-01-30 Haier Us Appliance Solutions, Inc. Valve assembly for a reciprocating compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11885325B2 (en) 2020-11-12 2024-01-30 Haier Us Appliance Solutions, Inc. Valve assembly for a reciprocating compressor
CN112983786A (zh) * 2021-03-18 2021-06-18 珠海格力节能环保制冷技术研究中心有限公司 一种排气结构、压缩机及包括该压缩机的电器产品
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CN110234875A (zh) 2019-09-13

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