KR101764027B1 - A linear compressor - Google Patents

A linear compressor Download PDF

Info

Publication number
KR101764027B1
KR101764027B1 KR1020150183908A KR20150183908A KR101764027B1 KR 101764027 B1 KR101764027 B1 KR 101764027B1 KR 1020150183908 A KR1020150183908 A KR 1020150183908A KR 20150183908 A KR20150183908 A KR 20150183908A KR 101764027 B1 KR101764027 B1 KR 101764027B1
Authority
KR
South Korea
Prior art keywords
cover
discharge
suction
magnetic
shell
Prior art date
Application number
KR1020150183908A
Other languages
Korean (ko)
Other versions
KR20170074527A (en
Inventor
전경진
홍언표
변정욱
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 KR1020150183908A priority Critical patent/KR101764027B1/en
Publication of KR20170074527A publication Critical patent/KR20170074527A/en
Application granted granted Critical
Publication of KR101764027B1 publication Critical patent/KR101764027B1/en

Links

Images

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
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/04—Multi-stage pumps having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • 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
    • F04B35/045—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 using solenoids
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F04B53/003—Noise damping by damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means

Abstract

The present invention relates to a linear compressor.
The linear compressor according to an embodiment of the present invention includes: a cover coupling portion supported at one side of a discharge cover assembly; A discharge side support member for supporting the cover engagement portion to the shell; And a magnetic member provided between the cover engaging portion and the discharge supporting member.

Description

[0001] The present invention relates to a linear compressor,

The present invention relates to a linear compressor.

The cooling system is a system that generates cool air by circulating a coolant, and repeats the process of compressing, condensing, expanding, and evaporating the coolant. To this end, the cooling system includes a compressor, a condenser, an expansion device and an evaporator. The cooling system may be installed in a refrigerator or an air conditioner as a household appliance.

Generally, a compressor is a mechanical device that receives power from a power generating device such as an electric motor or a turbine to increase pressure by compressing air, refrigerant or various other operating gases. .

Such a compressor is broadly classified into a reciprocating compressor that compresses the refrigerant while linearly reciprocating the piston inside the cylinder so as to form a compression space in which a working gas is sucked and discharged between the piston and the cylinder. A rotary compressor for compressing the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder and a compression space for sucking and discharging the working gas between the roller and the cylinder, a scroll compressor in which a compression space in which an operating gas is sucked and discharged is formed between a fixed scroll and a fixed scroll and the orbiting scroll rotates along the fixed scroll to compress the refrigerant.

In recent years, among the reciprocating compressors, there has been developed a linear compressor in which a piston is directly connected to a driving motor that reciprocates linearly, so that compression efficiency can be improved without mechanical loss due to motion switching and a simple structure is constructed.

Normally, the linear compressor is configured to suck and compress the refrigerant while discharging the refrigerant while moving the piston in the sealed shell by reciprocating linear motion within the cylinder by the linear motor.

The linear motor is configured such that a permanent magnet is positioned between an inner stator and an outer stator, and the permanent magnet is driven to linearly reciprocate by the mutual electromagnetic force between the permanent magnet and the inner (or outer) stator. As the permanent magnet is driven in the state of being connected to the piston, the piston linearly reciprocates in the cylinder, sucks the refrigerant, compresses the refrigerant, and discharges the refrigerant.

In relation to a conventional linear compressor, the present applicant has made a patent application (hereinafter referred to as Prior Art 1) and disclosed it.

[Prior Art 1]

1. Publication No. 10-2007-0094382, date of publication: September 20, 2007 Title of the invention: Body support device of reciprocating compressor

The reciprocating compressor according to the prior art document 1 includes a compression body located inside the casing and a driving force direction supporting unit mounted between the casing and the compression body so as to be positioned in the driving force direction of the driving motor, . The driving force direction supporting unit includes a spring.

According to the prior art document 1, vibrations generated in the main body of the compressor are relieved only by the spring, so that the vibration is not effectively attenuated and transmitted to the casing, thereby generating noise.

On the other hand, the present applicant has made a patent application (hereinafter referred to as Prior Art 2) and disclosed it.

[Prior Art 2]

1. Publication No. 1997-0045470, date of publication: July 26, 1997, title of the invention: internal support device of a hermetic compressor

The hermetic compressor according to the prior art document 2 includes an elastic member and a damper member to prevent vibration or noise generated in the main body from being transmitted to the hermetically sealed container.

However, according to the prior art document 2, since the elastic member and the damper member are disposed in direct contact with each other, it is difficult to attenuate vibrations transmitted by the contact.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a linear compressor for reducing vibrations or noise generated in a casing of a compressor.

The linear compressor according to an embodiment of the present invention includes: a cover coupling portion supported at one side of a discharge cover assembly; A discharge side support member for supporting the cover engagement portion to a second shell cover coupled to one side of the shell; And a magnetic member provided between the cover engaging portion and the discharge side support member.

Further, the magnetic member includes a first magnetic portion provided in the cover engagement portion and a second magnetic portion provided in the discharge-side support member, the second magnetic portion serving as the first magnetic portion.

The first magnetic portion and the second magnetic portion include magnets to which a repulsive force acts.

Further, the cover engaging portion may include: an engaging body extending in the axial direction; And a spring engaging portion extending from the engaging body in the radial direction perpendicular to the axial direction, to which the cover elastic member is engaged.

Further, the first magnetic portion is provided on the outer peripheral surface of the coupling body, and the second magnetic portion is provided on the inner peripheral surface of the support portion.

The first magnetic portion and the second magnetic portion may be formed of a plurality of members, respectively.

The apparatus further includes a second magnetic member provided between the suction guide portion and the suction side support member.

The second magnetic member may further include: a first magnetic portion provided on an outer circumferential surface of the suction guide portion; And a second magnetic portion provided on an inner peripheral surface of the suction side support member.

According to the present invention, it is possible to prevent vibration generated in the shell from being transmitted to the shell by providing a magnetic member between the cover coupling portion and the discharge side support member, thereby reducing the noise generated from the compressor Effect appears.

In detail, a plurality of the magnetic members are provided, and the plurality of magnetic members are configured to have a mutual repulsive force, so that a pressing force is applied between the cover engaging portion and the discharging side supporting member, It is possible to prevent vibration transmission due to the contact of the contact portion.

In addition, the discharge cover is coupled to the frame and acts as a medium for transmitting vibration generated in the driving device in the compressor, and the cover coupling part is coupled to the discharge cover to effectively damp the vibration.

In addition, a magnetic member may be provided inside the suction portion for guiding the suction of the refrigerant into the inside of the compressor to prevent the vibration generated between the suction of the refrigerant from being transmitted to the shell, thereby reducing the noise generated from the compressor .

1 is a sectional view showing a configuration of a linear compressor according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of the portion "A" in Fig.
3 is a cross-sectional view showing the configuration of the suction unit side according to the second embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

1 is a sectional view showing a configuration of a linear compressor according to a first embodiment of the present invention.

Referring to FIG. 1, a linear compressor 10 according to a first embodiment of the present invention includes a substantially cylindrical shell 101, a first shell cover 102 coupled to one side of the shell 101, And a second shell cover 103 coupled to the other side.

For example, the linear compressor 10 is laid down in a lateral direction. Referring to the drawing, the first shell cover 102 is disposed on the right side of the shell 101, the second shell cover 103 is disposed on the right side of the shell 101, (Not shown). In a broad sense, the first shell cover 102 and the second shell cover 103 can be understood as a constitution of the shell 101.

The linear compressor 10 is provided with a cylinder 120 provided inside the shell 101, a piston 130 linearly reciprocating in the cylinder 120, and a driving force applied to the piston 130 A motor assembly 140 is included as a linear motor.

When the motor assembly 140 is driven, the piston 130 can reciprocate in the axial direction.

In more detail, the linear compressor 10 includes a suction part 104 through which refrigerant flows and a discharge part 105 through which refrigerant compressed in the cylinder 120 is discharged. The suction unit 104 may be coupled to the first shell cover 102 and the discharge unit 105 may be coupled to the second shell cover 103.

The refrigerant sucked through the suction portion 104 flows into the piston 130 through the suction muffler 150. In the course of the refrigerant passing through the suction muffler 150, the noise can be reduced. The suction muffler 150 is constructed by combining a first muffler 151 and a second muffler 153. At least a portion of the suction muffler 150 is located within the piston 130.

The piston 130 includes a substantially cylindrical piston body 131 and a piston flange portion 132 extending radially from the piston body 131. The piston body 131 reciprocates within the cylinder 120 and the piston flange 132 can reciprocate outside the cylinder 120.

The cylinder (120) is configured to receive at least a portion of the suction muffler (150) and at least a portion of the piston (130).

A compression space P in which the refrigerant is compressed by the piston 130 is formed in the cylinder 120. A suction hole 133 for introducing a refrigerant into the compression space P is formed in a front portion of the piston 130. The suction hole 133 is selectively provided in front of the suction hole 133, A suction valve 135 is provided. At a substantially central portion of the suction valve 135, a fastening hole to which a predetermined fastening member is coupled is formed.

A discharge cover assembly 200 for forming a discharge space or a discharge path for the refrigerant discharged from the compression space P and a discharge cover assembly 200 coupled to the discharge cover assembly 200, P, a discharge valve assembly for selectively discharging compressed refrigerant is provided.

The discharge valve assembly includes a discharge valve 250 that opens when the pressure of the compression space P becomes equal to or higher than the discharge pressure and allows the refrigerant to flow into the discharge space of the discharge cover assembly 200, And a valve spring 252 which is provided between the discharge cover assembly 200 and applies an elastic force in the axial direction.

The discharge valve 250 is coupled to the valve spring 252 and the rear or rear surface of the discharge valve 250 is positioned to be supported on the front surface of the cylinder 120. The valve spring 252 may include a plate spring, for example.

The discharge valve assembly further includes a spring support portion 256 to which the valve spring 252 is supported. The spring support portion 256 may be seated on the inner surface of the first cover 210 of the discharge cover assembly 200.

The compression space P is understood as a space formed between the suction valve 135 and the discharge valve 250. The suction valve 135 is formed at one side of the compression space P and the discharge valve 250 can be provided at the other side of the compression space P, have.

On the other hand, the "axial direction" can be understood as a direction in which the piston 130 reciprocates, that is, a lateral direction in FIG. In the "axial direction", the direction from the suction portion 104 toward the discharge portion 105, that is, the direction in which the refrigerant flows is referred to as "forward" and the opposite direction is defined as "rearward".

On the other hand, "radial direction" can be understood as a direction perpendicular to the direction in which the piston 130 reciprocates, and in the longitudinal direction of Fig.

When the pressure in the compression space P becomes lower than the discharge pressure and becomes lower than the suction pressure in the course of reciprocating linear motion of the piston 130 in the cylinder 120, the suction valve 135 is opened, And sucked into the compression space (P). On the other hand, when the pressure in the compression space P becomes equal to or higher than the suction pressure, the refrigerant in the compression space P is compressed while the suction valve 135 is closed.

On the other hand, when the pressure in the compression space P becomes equal to or higher than the discharge pressure, the valve spring 252 is deformed forward to open the discharge valve 220, and the refrigerant is discharged from the compression space P , And is discharged to the discharge space of the discharge cover assembly (200). When the discharge of the refrigerant is completed, the valve spring 252 provides a restoring force to the discharge valve 250 so that the discharge valve 250 is closed.

The refrigerant flowing in the discharge space of the discharge cover assembly 200 is discharged from the discharge cover assembly 200 through the discharge pipe 205 and flows into the discharge hose 206. The discharge hose 206 is connected to the discharge pipe 205 and extends to the discharge part 105 and guides the compressed refrigerant to the discharge part 105. For example, the discharge hose 206 is rounded to have a rounded shape in a predetermined direction, and is coupled to the discharge portion 105.

The discharge cover assembly 200 includes a plurality of covers. The plurality of covers include a first cover 210, a second cover 220, a third cover 230, and a fourth cover 240. The first cover 210, the second cover 220, the second cover 230, and the fourth cover 240 may be sequentially disposed from the discharge valve 250.

The first cover 210 and the second cover 220 include a first discharge passage through which the compressed refrigerant discharged through the opened discharge valve 250 flows, And the third cover (230), a second discharge passage through which the refrigerant passing through the first discharge passage flows.

The discharge pipe 205 is coupled to the third cover 230 and the refrigerant passing through the second discharge passage may be discharged to the discharge pipe 205.

The fourth cover 240 is disposed in front of the third cover 230 to support the third cover 230. The fourth cover 240 may be referred to as a "support cover ".

To the fourth cover 240, a cover elastic member 340 is coupled. The fourth cover 240 includes a first cover protrusion 245 coupled to the cover elastic member 340. For example, the first cover protrusion 245 may be arranged to be inserted into the cover elastic member 340. The cover elastic part 340 is coupled to the cover engaging part 330.

The linear compressor (10) further includes a discharge side support member (310) for supporting the cover coupling part (330) by a magnetic force. The discharge side support member 310 is disposed to surround at least a part of the cover engaging part 330 and supports the cover engaging part 330 by magnetic force in a state of being separated from the outer peripheral surface of the cover engaging part 330 can do.

The discharge side support member 310 may extend radially from the cover engagement portion 330 and may be coupled to the second shell cover 103.

The linear compressor (10) further includes a reinforcing member (320) coupled to the discharge side support member (310). For example, the discharge side support member 310 and the reinforcing member 320 may be coupled by a fastening member.

The reinforcing member 320 is coupled to the discharge side support member 310 and extends toward the inner peripheral surface of the shell 101. The reinforcing member 320 includes a first engaging portion 321 coupled to the discharge side support member 310 and a second engaging portion 321 bent from the first engaging portion 321 and coupled to the inner peripheral surface of the shell 101. [ 2 coupling portion 325 are included.

The cover engaging portion 330 may be supported on the shell 101 or the second shell cover 103 through the discharge side support member 310 and the reinforcing member 320. Means supported include a magnetic member. The related description will be described later.

The linear compressor (10) further includes a frame (110). The frame 110 is configured to fix the cylinder 120 and can be fastened to the cylinder 120 by a separate fastening member. The frame 110 is disposed to surround the cylinder 120. That is, the cylinder 120 may be positioned to be received inside the frame 110. The discharge cover assembly 200, particularly the first cover 210, may be coupled to the front surface of the frame 110.

At least a portion of the gaseous refrigerant in the high-pressure gas refrigerant discharged through the opened discharge valve 250 may flow to the outer peripheral surface side of the cylinder 120 through the gas flow passage 112 of the frame 110. The gas channel 112 may be formed through at least a portion of the frame 110.

The refrigerant flows into the cylinder 120 through the gas inlet formed in the cylinder 120. The introduced refrigerant may flow into the space between the piston 130 and the cylinder 120 so that the outer circumferential surface of the piston 130 is spaced from the inner circumferential surface of the cylinder 120. Accordingly, the introduced refrigerant can function as a "gas bearing " which reduces friction with the cylinder 120 during reciprocation of the piston 130. [

The motor assembly 140 includes an outer stator 141 fixed to the frame 110 so as to surround the cylinder 120 and an inner stator 148 disposed apart from the inner stator 141 And a permanent magnet 146 positioned in the space between the outer stator 141 and the inner stator 148.

The permanent magnets 146 can reciprocate linearly by mutual electromagnetic forces with the outer stator 141 and the inner stator 148. The permanent magnets 146 may be formed of a single magnet having one pole or a plurality of magnets having three poles.

The permanent magnet 146 may be coupled to the piston 130 by a connecting member 138. In detail, the connecting member 138 may be coupled to the piston flange portion 132 and may be bent and extended toward the permanent magnet 146. As the permanent magnet 146 reciprocates, the piston 130 can reciprocate axially together with the permanent magnet 146.

The outer stator 141 includes a coil winding body and a stator core. The coil winding body includes a bobbin and a coil wound in the circumferential direction of the bobbin. The cross section of the coil may have a polygonal shape, for example, a hexagonal shape.

The stator core may include a plurality of laminations laminated in a circumferential direction, and may be disposed so as to surround the coil winding body.

A 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 may be supported by the stator cover 149.

The inner stator 148 is fixed to the outer periphery of the frame 110. The inner stator 148 is formed by laminating a plurality of laminations in the circumferential direction from the outside of the frame 110.

The linear compressor 10 further includes a supporter 137 for supporting the piston 130 and a back cover 170 spring-coupled to the supporter 137. The supporter 137 is coupled to the piston flange portion 132 and the connecting member 138 by a predetermined fastening member.

The linear compressor 10 further includes a suction guide unit 155 disposed inside a point of a first shell cover 102 to which the suction unit 104 is coupled. The suction guide part 155 is installed adjacent to the inside of the coupling point so that the refrigerant sucked through the suction part 104 is introduced into the suction muffler 150.

The linear compressor (10) includes a plurality of resonance springs (176) whose natural frequencies are adjusted so that the piston (130) can resonate.

The plurality of resonance springs 176 are provided with a first resonance spring which is supported between the supporter 137 and the stator cover 149 and a second resonance spring which is supported between the supporter 137 and the back cover 170. [ Spring.

The linear compressor (10) further includes a suction side elastic member (187) coupled to the back cover (170). For example, the suction-side elastic member 187 includes a leaf spring.

The back cover 170 includes a second cover protrusion 175 which is engaged with the suction side elastic member 187. For example, the second cover protrusion 175 may be disposed to be inserted into the suction-side elastic member 187. The suction-side elastic member 187 may be coupled to the suction guide unit 155.

The cover elastic member 340 may be referred to as a " first elastic member ", and the suction side elastic member 187 may be referred to as a "second elastic member ".

The linear compressor (10) further includes a suction side support member (180) for supporting the suction guide portion (155). The suction side support member 180 is disposed to surround at least a part of the suction guide portion 155 and is positioned to be spaced from the outer peripheral surface of the suction guide portion 155.

The suction side support member 180 may extend radially from both sides of the suction guide portion 155 and may be coupled to the first shell cover 102.

A damping member 185 is installed in a space separated between the suction side support member 180 and the suction guide unit 155. For example, the damping member 185 may include a rubber member. The damping member 185 prevents the vibration that may be generated during the suction of the refrigerant through the suction unit 104 from being transmitted from the suction guide unit 155 to the suction side support member 180 . The noise reduction effect is obtained.

Fig. 2 is an enlarged view of the portion "A" in Fig.

2, the cover coupling part 330 according to the first embodiment of the present invention is provided with a coupling body 331 extending in the axial direction, that is, forward, and a coupling part 331 extending in the radial direction from the rear part of the coupling body 331 And a spring engagement portion 335 to which the cover elastic member 340 is coupled.

The engaging body 331 has a substantially cylindrical shape. The spring coupling portion 335 forms a substantially ring-shaped flange.

The cover elastic member 340 includes a first elastic portion 341 coupled to one side of the spring coupling portion 335 and a second elastic portion 343 coupled to the other side. The first and second elastic portions 341 and 342 may be coupled to the first cover protrusion 245 of the fourth cover 240, respectively.

The discharge side support member 310 is provided with a support portion 311 disposed so as to surround the coupling body 331 and an extension portion extending from the support portion 311 in the radial direction and coupled to the second shell cover 103 315). The supporting portion 311 may have a cylindrical shape to receive the coupling body 331 and may be disposed so as to face the coupling body 331.

The linear compressor 10 further includes magnetic members 351 and 355 for supporting the cover coupling portion 330 with respect to the discharge side support member 310. The cover coupling portion 330 may be supported by the discharge side support member 310 while being separated from the discharge side support member 310 by the magnetic members 351 and 355.

In detail, the magnetic members 351 and 355 include a first magnetic part 351 provided on the cover coupling part 330 and a second magnetic part 355 provided on the discharge side support member 310.

The first magnetic portion 351 and the second magnetic portion 355 may be composed of magnets capable of applying a repulsive force.

The first magnetic portion 351 may be installed on the outer circumferential surface of the coupling body 331 of the cover coupling portion 330. The second magnetic portion 355 may be installed on the inner peripheral surface of the support portion 311 of the discharge side support member 310.

The first magnetic portion 351 and the second magnetic portion 355 may be provided in plurality. The plurality of first magnetic portions 351 includes a first member 351a provided on one side of the outer circumferential surface of the coupling body 331 and a second member 351b provided on the other side.

The plurality of second magnetic portions 355 are provided with a third member 355a provided on one side of the inner circumferential surface of the support portion 311 and acting on the first member 351a, And a fourth member 355b that works with the second member 351b.

Since the plurality of first magnetic portions 351 and the plurality of second magnetic portions 355 are provided, a relatively strong repulsive force is generated between the cover engaging portion 330 and the discharge side support member 310 And the repulsive force may restrict the movement of the cover coupling portion 330 in the direction toward the discharge side support member 310, that is, in the radial direction.

During the operation of the linear compressor 10, vibration occurs in the discharge cover assembly 200 or the frame 110 due to the pressure of the piston 130 reciprocating at a high speed and the pressure of the refrigerant discharged from the discharge valve 250 . These vibrations generate axial and radial movements of the discharge cover assembly 200, the frame 110, and the like.

When the movement is transmitted to the shell 101 or the shell covers 102 and 103 without being appropriately attenuated, vibration and noise of the entire linear compressor 10 may be generated.

However, according to the present embodiment, even if movement of the cover engaging portion 330 toward the discharge side support member 310 occurs due to the movement in the axial direction and the radial direction, the discharge side support member 310 can push out the cover coupling part 330, so that the vibration due to the movement can be restricted from being transmitted to the discharge side support member 310.

That is, since the contact between the cover coupling portion 330 and the discharge-side support member 310 is not generated, the vibration is attenuated and the noise generation can be reduced.

Hereinafter, a second embodiment of the present invention will be described. Since the present embodiment differs from the first embodiment only in some configurations, the differences will be mainly described, and the description and the reference numerals of the first embodiment are used for the same portions as those in the first embodiment.

3 is a cross-sectional view showing the configuration of the suction unit side according to the second embodiment of the present invention.

3, the linear compressor 10 according to the second embodiment of the present invention is located inside a point (coupling point) of the first shell cover 102 to which the suction portion 104 is coupled, A suction guide portion 465 for guiding the flow and a suction side support member 480 for supporting the suction guide portion 465 are included.

The suction guide portion 465 is provided with a guide body 466 extending in the axial direction and a spring engagement portion 467 extending radially from the front portion of the guide body 466 and coupled to the suction side elastic member 487 ). The guide body 466 has a substantially cylindrical shape, and the spring engagement portion 467 forms a substantially ring-shaped flange.

The suction side elastic member 487 includes a first elastic portion coupled to one side of the spring engagement portion 467 and a second elastic portion coupled to the other side. The first and second elastic portions may be coupled to the second cover protrusion 175 of the back cover 170, respectively.

The suction side support member 480 is provided with a support portion 481 disposed to surround the guide body 466 and an extension portion 481 extending radially from the support portion 481 and coupled to the first shell cover 102. [ (485). The support portion 481 may have a cylindrical shape to receive the guide body 466.

The linear compressor 10 further includes magnetic members 451 and 455 for supporting the suction guide portion 465 with respect to the suction side support member 480. The magnetic members 451 and 455 may be referred to as "second magnetic members" in order to distinguish the magnetic members 451 and 455 from the magnetic members 351 and 355.

The suction guide portion 465 can be supported by the suction side support member 480 while being separated from the suction side support member 480 by the magnetic members 451 and 455. [

In detail, the magnetic members 451 and 455 include a first magnetic portion 451 provided on the suction guide portion 465 and a second magnetic portion 455 provided on the suction side support member 480.

The first magnetic portion 451 and the second magnetic portion 455 may be made of magnets capable of applying a repulsive force.

The first magnetic portion 451 may be installed on the outer circumferential surface of the guide body 466 of the suction guide portion 465. The second magnetic portion 455 may be installed on the inner peripheral surface of the support portion 481 of the suction side support member 480.

The first magnetic portion 351 and the second magnetic portion 355 may be provided in plurality. The plurality of first magnetic portions 351 includes a first member 451a provided on one side of the outer circumferential surface of the guide body 466 and a second member 451b provided on the other side.

The plurality of second magnetic portions 455 are provided with a third member 455a provided on one side of the inner circumferential surface of the support portion 481 and acting on the first member 451a, And a fourth member 455b acting on the second member 451b.

A relatively strong repulsive force is applied between the suction guide portion 465 and the suction side support member 480 by the provision of the plurality of first magnetic portions 451 and the plurality of second magnetic portions 455 And the movement of the suction guide portion 465 in the direction toward the suction side support member 480, that is, in the radial direction, may be restricted by the repulsive force.

During operation of the linear compressor 10, vibration may be generated in the suction guide portion 465 or the back cover 170 due to the flow pressure of the refrigerant sucked through the suction portion 104. Such vibration generates axial and radial movements of the suction guide portion 465 or the back cover 170 and the like.

When the movement is transmitted to the shell 101 or the shell covers 102 and 103 without being appropriately attenuated, vibration and noise of the entire linear compressor 10 may be generated.

However, according to the present embodiment, even if movement of the suction guide portion 465 toward the suction side support member 480 occurs due to the movement in the axial direction and the radial direction, Since the member 480 can push the suction guide part 465, the vibration due to the movement can be restricted from being transmitted to the suction side support member 480.

That is, since the contact between the suction guide portion 465 and the suction side support member 480 does not occur, the vibration is attenuated and the noise generation can be reduced accordingly.

10: Linear compressor 101: Shell
110: frame 130: piston
140: motor assembly 150: suction muffler
200: Discharge cover assembly 250: Discharge valve
310: Discharge side support member 311:
315: extension part 330: cover engagement part
331: coupling body 335: spring coupling portion
351: first magnetic portion 355: second magnetic portion
465: Suction guide portion 480: Suction side support member
451: first magnetic portion 455: second magnetic portion

Claims (16)

Shell;
A second shell cover coupled to one side of the shell;
A cylinder disposed inside the shell and forming a compression space for the refrigerant;
A frame securing the cylinder to the shell;
A piston provided to be axially reciprocable within the cylinder;
A discharge valve provided at one side of the cylinder for selectively discharging compressed refrigerant in a compression space of the refrigerant;
A discharge cover assembly coupled to the frame and having a discharge space for the refrigerant discharged through the discharge valve;
A cover engaging portion supported on one side of the discharge cover assembly;
A discharge side support member for supporting the cover engagement portion to the second shell cover; And
And a magnetic member provided between the cover engaging portion and the discharge side support member. The method according to claim 1,
In the magnetic member,
A first magnetic portion provided on the cover coupling portion; And
And a second magnetic portion provided on the discharge side support member and acting with the first magnetic portion. 3. The method of claim 2,
The first magnetic portion and the second magnetic portion,
A linear compressor including a magnet acting on a reciprocating force. 3. The method of claim 2,
And a cover elastic member coupled to the discharge cover assembly and supporting the cover engagement portion. 5. The method of claim 4,
In the cover engagement portion,
An engaging body extending in the axial direction; And
And a spring engaging portion extending in a radial direction perpendicular to the axial direction from the engaging body and engaged with the cover elastic member. 6. The method of claim 5,
And the first magnetic portion is provided on an outer peripheral surface of the coupling body. The method according to claim 6,
In the discharge-side support member,
A support disposed to surround the coupling body; And
And an extension portion extending from the support portion to the second shell cover. 8. The method of claim 7,
And the second magnetic portion is provided on the inner peripheral surface of the support portion. 3. The method of claim 2,
Wherein the first magnetic portion includes:
A first member installed on one side of the outer circumferential surface of the cover engagement portion; And
And a second member provided on the other side of the outer circumferential surface of the cover engagement portion. 10. The method of claim 9,
Wherein the second magnetic portion includes:
A third member provided on one side of the inner circumferential surface of the discharge side support member and magnetically acting on the first member; And
And a fourth member provided on the other side of the inner circumferential surface of the discharge side support member and magnetically acting on the second member. The method according to claim 1,
And a reinforcing member coupled to the discharge side support member and extending to an inner circumferential surface of the shell. The method according to claim 1,
A first shell cover coupled to the other side of the shell;
A suction unit coupled to the first shell cover; And
And a suction guide part installed inside the suction part to guide the refrigerant sucked through the suction part into the inside of the piston. 13. The method of claim 12,
And a suction side support member for supporting the suction guide portion to the shell cover. 14. The method of claim 13,
And a damping member disposed between the suction guide portion and the suction side support member and made of rubber. 14. The method of claim 13,
And a second magnetic member provided between the suction guide portion and the suction side support member. 16. The method of claim 15,
In the second magnetic member,
A first magnetic portion provided on an outer circumferential surface of the suction guide portion; And
And a second magnetic portion provided on an inner peripheral surface of the suction side support member.
KR1020150183908A 2015-12-22 2015-12-22 A linear compressor KR101764027B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150183908A KR101764027B1 (en) 2015-12-22 2015-12-22 A linear compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150183908A KR101764027B1 (en) 2015-12-22 2015-12-22 A linear compressor

Publications (2)

Publication Number Publication Date
KR20170074527A KR20170074527A (en) 2017-06-30
KR101764027B1 true KR101764027B1 (en) 2017-08-14

Family

ID=59279475

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150183908A KR101764027B1 (en) 2015-12-22 2015-12-22 A linear compressor

Country Status (1)

Country Link
KR (1) KR101764027B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3473855B1 (en) 2017-09-28 2021-03-10 LG Electronics Inc. Linear compressor
CN209228564U (en) 2017-10-11 2019-08-09 Lg电子株式会社 Linearkompressor
KR101981101B1 (en) * 2017-10-11 2019-05-22 엘지전자 주식회사 Linear compressor
KR101981102B1 (en) * 2017-10-11 2019-05-22 엘지전자 주식회사 Linear compressor
KR101981103B1 (en) * 2017-10-25 2019-05-22 엘지전자 주식회사 Linear compressor
EP3587811B1 (en) 2018-06-29 2021-03-10 LG Electronics Inc. Linear compressor
KR102060179B1 (en) * 2018-06-29 2019-12-27 엘지전자 주식회사 Linear compressor
KR102228858B1 (en) * 2019-05-22 2021-03-17 엘지전자 주식회사 Linear compressor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100724453B1 (en) 2006-03-07 2007-06-04 엘지전자 주식회사 Supporting device for reciprocating compressor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100724453B1 (en) 2006-03-07 2007-06-04 엘지전자 주식회사 Supporting device for reciprocating compressor

Also Published As

Publication number Publication date
KR20170074527A (en) 2017-06-30

Similar Documents

Publication Publication Date Title
KR101809347B1 (en) A linear compressor
KR101764027B1 (en) A linear compressor
KR102257493B1 (en) linear compressor
KR20160000300A (en) A linear compressor
KR20160001055A (en) A linear compressor
KR20180093526A (en) Linear compressor
KR20160011009A (en) Linear compressor
US11359617B2 (en) Compressor
KR20160005516A (en) Linear compressor and linear motor
US11378069B2 (en) Compressor
KR102345324B1 (en) Linear compressor
KR102162335B1 (en) Linear compressor
KR102399507B1 (en) Motor and compressor including thereof
KR102430411B1 (en) Linear compressor
US20240110554A1 (en) Linear compressor
KR102321785B1 (en) Compressor
US20240110556A1 (en) Linear compressor
US20240110557A1 (en) Linear compressor
KR102345322B1 (en) Linear compressor
KR102458151B1 (en) Linear compressor
US20240110553A1 (en) Linear compressor
KR102228544B1 (en) Compressor
US20230145653A1 (en) Compressor
US20230193890A1 (en) Linear compressor
KR20210079030A (en) Compressor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant