KR102365529B1 - Linear compressor - Google Patents

Abstract

Linear compressor according to the present invention, the shell; a shell cover covering the shell; a compressor body accommodated in the shell and configured to compress the refrigerant; and a support device supporting the compressor body in the shell and connecting the compressor body and the shell cover.
The support device includes a first connection part connected to the compressor body, a second connection part provided on the shell cover, and a buffer part connected to each of the first connection part and the second connection part.
The support device includes a separation prevention unit for preventing the buffer unit and the first connection unit from being separated from the buffer unit and the first connection unit in a state in which the buffer unit and the first connection unit are connected, and preventing the buffer unit from being separated from the second connection unit It may include one or more of the separation prevention unit for

Description

Linear compressor

The present invention relates to a linear compressor.

The cooling system is a system that circulates a refrigerant to generate cold air, and repeatedly performs compression, condensation, expansion, and evaporation of the refrigerant. To this end, the cooling system includes a compressor, a condenser, an expansion device and an evaporator. In addition, the cooling system may be installed in a refrigerator or an air conditioner as a home appliance.

In general, a compressor is a mechanical device that receives power from a power generating device such as an electric motor or a turbine and compresses air, refrigerant, or other various working gases to increase the pressure, and is widely used throughout the home appliance or industry. is being used

When these compressors are broadly classified, a reciprocating compressor that compresses the refrigerant while linearly reciprocating inside the cylinder by forming a compression space in which the working gas is absorbed and discharged between the piston and the cylinder (Reciprocating compressor) ), a compression space for suction and discharge of working gas is formed between the eccentrically rotating roller and the cylinder, and the roller rotates eccentrically along the inner wall of the cylinder to compress the refrigerant. scroll) and a fixed scroll (Fixed scroll), a compression space for suction and discharge of the working gas is formed, and the orbiting scroll can be divided into a scroll compressor that compresses the refrigerant while rotating along the fixed scroll (Scroll Compressor).

Recently, among the reciprocating compressors, in particular, a linear compressor having a simple structure and capable of improving compression efficiency without mechanical loss due to motion conversion by allowing the piston to be directly connected to a drive motor in which a piston reciprocates and linearly moves has been developed.

In general, a linear compressor is configured to suck, compress, and then discharge refrigerant while a piston moves in a reciprocating linear motion in a cylinder by a linear motor inside a sealed shell.

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 reciprocate linearly by a mutual electromagnetic force between the permanent magnet and the inner (or outer) stator. And, as the permanent magnet is driven in a state connected to the piston, the piston sucks and compresses the refrigerant while linearly reciprocating inside the cylinder, and then discharges it.

Korean Patent Application Laid-Open No. 10-2016-0009306 (published on January 24, 2016), which is a prior document, discloses a linear compressor and a refrigerator including the same.

The linear compressor includes a suction part, a discharge part, a compressor casing, a compressor body, and a main body support part, a first cover, and a second cover.

The compressor body includes a cylinder for compressing the refrigerant flowing in from the suction unit and discharging the compressed refrigerant through the discharge unit, and a piston reciprocating and linear motion inside the cylinder and a motor assembly for applying a driving force to the piston.

The main body support part is for supporting the main body in the compressor casing, and is provided at both ends of the compressor main body in the axial direction of the compressor.

The body support includes a leaf spring. A leaf spring is mounted perpendicular to the axial direction of the compressor body. stiffness) can be obtained.

However, according to the prior literature, the compressor body is spaced apart from each cover when the compressor is stopped, but in the process of transporting the compressor or operating the compressor, the The compressor body collides with either cover.

In this case, when the amount of impact between the compressor body and the cover is large, the leaf spring is deformed.

The amount of impact between the compressor body and the cover increases as the axial movement distance of the compressor body increases. In the case of the prior literature, a structure for reducing the axial movement distance of the compressor body is not provided, so that the plate when transporting the compressor The spring is likely to be deformed.

In addition, since the leaf spring is in direct contact with the compressor casing, vibration is transmitted to the compressor casing by the leaf spring, thereby generating vibration noise from the compressor casing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a linear compressor in which the compressor body is prevented from colliding with the compressor casing during the transport process or the operation process of the compressor body.

In addition, it is an object of the present invention to provide a linear compressor in which deformation of a leaf spring for supporting the compressor body can be prevented by limiting the axial movement of the compressor body within a certain range during the transport process or the operation process of the compressor body. there is.

Another object of the present invention is to provide a linear compressor capable of reducing noise generated as vibrations generated in the compressor body are transmitted to the compressor casing during the operation of the compressor body.

Another object of the present invention is to provide a linear compressor in which parts for reducing noise caused by vibrations generated in the compressor body are prevented from being separated from each other.

A linear compressor for achieving the above object, the shell; a shell cover covering the shell; a compressor body accommodated in the shell and configured to compress the refrigerant; and a support device supporting the compressor body in the shell and connecting the compressor body and the shell cover.

The support device includes a first connection part connected to the compressor body, a second connection part provided on the shell cover, and a buffer part connected to each of the first connection part and the second connection part.

The support device may further include a separation prevention part for preventing the buffer part and the first connection part from being separated while the buffer part and the first connection part are connected.

The first connection part and the buffer part may be formed of different materials. The buffer unit may be formed of a rubber material or a material capable of absorbing shock while being deformed by an external force.

The separation prevention unit includes one or more protrusions provided on any one of the first connection part and the buffer part, and one or more protrusion receiving parts provided on the other one of the first connection part and the buffer part and receiving the one or more protrusions. can do.

The first connection part may include a first part inserted into the buffer part, and the buffer part may include a buffer body into which the first part is inserted.

The one or more protrusions may be provided on any one of the first part and the buffer body, and the one or more protrusion receiving parts may be provided on the other one of the first part and the buffer body.

The support device may further include a separation prevention part for preventing the buffer part and the second connection part from being separated while the buffer part and the second connection part are connected.

The separation preventing part for preventing the buffer part and the second connection part from being separated may include an insertion protrusion provided in the buffer part, and an insertion protrusion receiving part provided in the second connection part and into which the insertion protrusion is inserted. there is.

The insertion protrusion may be inserted into the insertion protrusion receiving portion in a direction parallel to the axial direction of the compressor body.

The buffer unit may include a buffer body, and the second connection part may include a receiving body in which the buffer body is accommodated.

The insertion protrusion may be provided on the buffer body, and the insertion protrusion receiving part may be provided on the receiving body.

The insertion protrusion may include a first protrusion protruding from the cushioning body.

The insertion protrusion receiving part is positioned between an inlet having a width greater than a diameter or thickness of the first protrusion, an accommodating groove in which the first protrusion is accommodated, and the inlet and the receiving groove, wherein the first protrusion is It may include a neck portion having a width smaller than the diameter or thickness of the first protrusion in order to prevent falling out of the receiving groove.

The buffer part may include an extension part extending from the buffer body and contacting the accommodation body in a state in which the buffer body is accommodated in the accommodation body.

The insertion protrusion may further include a second protrusion connecting the extension portion and the first protrusion and having a thickness smaller than a diameter or thickness of the first protrusion.

According to the proposed invention, even if the compressor body vibrates in the radial direction in the process of transporting the linear compressor, the compressor body is restricted from moving in the radial direction by the stopper, so that the motor assembly is prevented from colliding with the shell and , thereby preventing the motor from being damaged.

In addition, since the linear compressor includes the suction side support device for limiting the axial movement of the compressor body, damage due to excessive deformation of the leaf spring supporting the compressor body can be prevented.

In addition, since the suction-side support device includes a buffer portion positioned between the first connection portion connecting the leaf spring and the second connection portion provided in the shell cover, the vibration transmitted from the leaf spring is not transmitted to the second connection portion. The buffer is absorbed. Accordingly, noise may be minimized by vibration of the shell cover.

In addition, it is possible to prevent the first connection part from falling out of the buffer part during the transport process of the linear compressor or the operation process of the compressor body by the first separation preventing part.

In addition, the second separation preventing unit can prevent the buffer unit from being pulled out from the second connection unit during the transport process of the linear compressor or the operation process of the compressor body.

1 is an external perspective view showing the configuration of a linear compressor according to an embodiment of the present invention;
2 is an exploded perspective view of a shell and a shell cover of a linear compressor according to an embodiment of the present invention;
3 is an exploded perspective view of internal parts of a linear compressor according to an embodiment of the present invention;
4 is a cross-sectional view taken along line AA of FIG. 1 ;
5 is a perspective view showing a state in which the back cover is fixed to the first shell cover by a suction-side support device;
6 and 7 are perspective views showing a suction-side support device and a first shell cover according to an embodiment of the present invention.
8 is a perspective view of a first connection part according to an embodiment of the present invention;
9 is a perspective view of a buffer unit according to an embodiment of the present invention.
10 is a perspective view of a second connection part according to an embodiment of the present invention;
11 is a view showing a state in which the first connection part, the buffer part, and the second connection part are coupled to each other.
12 is a cross-sectional view showing a state in which the suction-side support device is connected to the first shell cover;
13 is a plan view of a leaf spring according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

1 is an external perspective view showing the configuration of a linear compressor according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a shell and a shell cover of the linear compressor according to an embodiment of the present invention.

1 and 2 , the linear compressor 10 according to an embodiment of the present invention may include a shell 101 and shell covers 102 and 103 coupled to the shell 101 . In a broad sense, the shell covers 102 and 103 may be understood as one configuration of the shell 101 .

Accordingly, the shell 101 and the shell covers 102 and 103 may be collectively referred to as a compressor casing.

A leg 50 may be coupled to a 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. For example, the product may include a refrigerator, and the base may include a machine room base of the refrigerator. As another example, 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 has a substantially cylindrical shape, and may be arranged to lie in a transverse direction or to lie in an axial direction. Referring to FIG. 1 , the shell 101 extends long in the horizontal direction and may have a rather low height in the radial direction. That is, since the linear compressor 10 can have a low height, there is an advantage that the height of the machine room can be reduced when the linear compressor 10 is installed in the machine room base of the refrigerator.

A terminal 108 may be installed on the outer surface of the shell 101 . The terminal 108 may transmit external power to the motor 140 (refer to FIG. 3 ) of the linear compressor 10 . The terminal 108 may be connected to a lead wire of the coil 141c (refer to FIG. 3 ).

A bracket 109 is installed on the outside of the terminal 108 . The bracket 109 may function to protect the terminal 108 from external impact.

Both sides of the shell 101 are configured to be opened. The shell covers 102 and 103 may be coupled to both sides of the opened shell 101 . In detail, the shell covers 102 and 103 include a first shell cover 102 coupled to the open one side of the shell 101 and a second shell cover coupled to the other open side of the shell 101 . (103) may be included. The inner space of the shell 101 may be sealed by the shell covers 102 and 103 .

Referring to FIG. 1 , the first shell cover 102 may be located on the right side of the linear compressor 10 , and the second shell cover 103 may be located on the left side of the linear compressor 10 . . In other words, 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 , 106 provided in the shell 101 or the shell cover 102 , 103 and capable of sucking, discharging or injecting refrigerant. there is.

The plurality of pipes 104 , 105 , 106 includes a suction pipe 104 through which refrigerant is sucked into the linear compressor 10 , and a discharge pipe through which the compressed refrigerant is discharged from the linear compressor 10 . (105) may be included.

In addition, the plurality of pipes (104, 105, 106) may include a process pipe (106) for replenishing the refrigerant to the linear compressor (10).

For example, 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 the shell 101 . The refrigerant sucked through the suction pipe 104 may be compressed while flowing in the axial direction. Also, the compressed refrigerant may be discharged through the discharge pipe 105 .

The process pipe 106 may be coupled to an outer circumferential surface of the shell 101 . An operator may inject a 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 from 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, work convenience may be improved.

A plurality of stoppers 500 may be provided on the inner surface of the first shell cover 102 . The plurality of stoppers 500 prevent the compressor body 100, in particular, the motor 140 from being damaged due to vibration or shock generated during transportation of the linear compressor 10 .

3 is an exploded perspective view of an internal component of a linear compressor according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 .

3 and 4 , the linear compressor 10 according to an embodiment of the present invention includes a compressor body 100 and the compressor body 100 including the shell 101 and shell covers 102 and 103 . It may include one or more support devices 200 and 300 for supporting one or more of them.

For example, the one or more supporting devices 200 and 300 may support the compressor body 100 so that the compressor body 100 is kept spaced apart from the shell 101 .

The compressor body 100 applies a driving force to a cylinder 120 provided inside the shell 101 , a piston 130 reciprocating linearly within the cylinder 120 , and the piston 130 . It may include a motor 140 that does. When the motor 140 is driven, the piston 130 may reciprocate in an axial direction.

The compressor body 100 may further include a suction muffler 150 coupled to the piston 130 and configured 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 . For example, while the refrigerant passes through the suction muffler 150 , the flow noise of the refrigerant may be reduced.

The suction muffler 150 may include a plurality of mufflers 151 , 152 , and 153 . The plurality of mufflers 151 , 152 , and 153 may include a first muffler 151 , a second muffler 152 , and a third muffler 153 coupled to each other.

The first muffler 151 is positioned inside the piston 130 , and the second muffler 152 is coupled to the rear side of the first muffler 151 . In addition, the third muffler 153 accommodates the second muffler 152 therein and may extend to the rear of the first muffler 151 . From the viewpoint of the flow direction of the refrigerant, the refrigerant sucked through the suction pipe 104 may sequentially pass through the third muffler 153 , the second muffler 152 , and the first muffler 151 . In this process, the flow noise of the refrigerant can be reduced.

The suction muffler 150 may further include a muffler filter 155 . The muffler filter 155 may be positioned at an interface where the first muffler 151 and the second muffler 152 are coupled. For example, the muffler filter 155 may have a circular shape, and an outer peripheral portion of the muffler filter 155 may be supported between the first and second mufflers 151 and 152 .

define the direction

The “axial direction” may be understood as a direction in which the piston 130 reciprocates, that is, a horizontal direction in FIG. 4 .

And, among the "axial direction", the direction from the suction pipe 104 toward the compression space P, that is, the direction in which the refrigerant flows is referred to as "front", and the opposite direction is defined as "rear".

On the other hand, the "radial direction" is a direction perpendicular to a direction in which the piston 130 reciprocates, and may be understood as a vertical direction in FIG. 4 .

The term “axis of the compressor body” refers to an axial centerline of the piston 130 . In addition, the axial center line of the piston 130 passes through the first and second shell covers 102 and 103 .

The piston 130 may include a piston body 131 formed in a substantially cylindrical shape and a piston flange part 132 extending radially from the piston body 131 . The piston body 131 may reciprocate inside the cylinder 120 , and the piston flange part 132 may reciprocate outside the cylinder 120 .

The cylinder 120 may accommodate at least a portion of the first muffler 151 and at least a portion of the piston body 131 .

A compression space P in which the refrigerant is compressed by the piston 130 is formed in the cylinder 120 . In addition, a suction hole 133 for introducing a refrigerant into the compression space P is formed in the front portion of the piston body 131 , and the suction hole 133 is selectively selected in front of the suction hole 133 . A suction valve 135 that opens to A fastening hole to which a predetermined fastening member is coupled is formed in a substantially central portion of the suction valve 135 .

In front of the compression space (P), the discharge cover 160 forming the discharge space (160a) of the refrigerant discharged from the compression space (P) and coupled to the discharge cover 160, the compression space (P) Discharge valve assemblies 161 and 163 are provided for selectively discharging the compressed refrigerant. The discharge space 160a may include a plurality of space portions partitioned by the inner wall of the discharge cover 160 . The plurality of space portions may be disposed in the front-rear direction and communicated with each other.

The discharge valve assemblies 161 and 163 are opened when the pressure of the compression space P is equal to or greater than the discharge pressure, and the discharge valve 161 and the discharge valve for introducing a refrigerant into the discharge space of the discharge cover 160 . A spring assembly 163 provided between the 161 and the discharge cover 160 to provide an elastic force in the axial direction may be included.

The spring assembly 163 may include a valve spring 163a and a spring support part 163b for supporting the valve spring 163a to the discharge cover 160 . For example, the valve spring 163a may include a leaf spring. In addition, the spring support part 163b may be injection-molded integrally with the valve spring 163a by an injection process.

The discharge valve 161 is coupled to the valve spring 163a, and a rear portion or a rear surface of the discharge valve 161 is positioned to support the front surface of the cylinder 120 . When the discharge valve 161 is supported on the front surface of the cylinder 120 , the compression space P maintains a sealed 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 compressed space P may be discharged.

The compression space P is a space formed between the intake valve 135 and the discharge valve 161 . In addition, the suction valve 135 may be provided on one side of the compression space P, and the discharge valve 161 may be provided on the other side of the compression space P, that is, on the opposite side of the suction valve 135 . there is.

In the process of the piston 130 reciprocating and linear motion inside the cylinder 120, when the pressure in the compression space P is lower than the discharge pressure and less than the suction pressure, the suction valve 135 is opened and the refrigerant is It is sucked into the compression space (P). On the other hand, when the pressure in the compression space P is equal to or greater than the suction pressure, the refrigerant in the compression space P is compressed in a state in which the suction valve 135 is closed.

On the other hand, when the pressure in the compression space P is equal to or greater than the discharge pressure, the valve spring 163a deforms forward to open the discharge valve 161, and the refrigerant is discharged from the compression space P , is discharged to the discharge space of the discharge cover 160 . When the discharge of the refrigerant is completed, the valve spring 163a provides a restoring force to the discharge valve 161 to close the discharge valve 161 .

The compressor body 100 may further include a cover pipe 162a coupled to the discharge cover 160 and discharging the refrigerant flowing through the discharge space 160a of the discharge cover 160 . For example, the cover pipe 162a may be made of a metal material.

In addition, the compressor body 100 may further include a loop pipe 162b coupled to the cover pipe 162a and transferring the refrigerant flowing through the cover pipe 162a to the discharge pipe 105 . there is. One side of the roof pipe 162b may be coupled to the cover pipe 162a , and the other side may be coupled to the discharge pipe 105 .

The roof pipe 162b is made of a flexible material. The roof pipe 162b may extend from the cover pipe 162a in a round shape along the inner circumferential surface of the shell 101 , and may be coupled to the discharge pipe 105 . For example, the loop pipe 162b may be disposed in a wound shape.

The compressor body 100 may further include a frame 110 . The frame 110 is configured to fix the cylinder 120 . For example, the cylinder 120 may be press-fitted to the inside of the frame 110 .

The frame 110 is disposed to surround the cylinder 120 . That is, the cylinder 120 may be positioned to be accommodated inside the frame 110 . In addition, the discharge cover 160 may be coupled to the front surface of the frame 110 by a fastening member.

The compressor body 100 may further include a motor 140 .

The motor 140 includes an outer stator 141 fixed to the frame 110 and arranged to surround the cylinder 120 , and an inner stator 148 arranged to be spaced apart from the inner side of the outer 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 reciprocate linearly by mutual electromagnetic force between the outer stator 141 and the inner stator 148 . In addition, the permanent magnet 146 may be configured as a single magnet having one pole or by combining a plurality of magnets having three poles.

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 .

In detail, based on the cross-sectional view of FIG. 4 , the magnet frame 138 is coupled to the piston flange part 132 to extend in an outer radial direction and may be bent forward. The permanent magnet 146 may be installed in a front portion of the magnet frame 138 . When the permanent magnet 146 reciprocates, the piston 130 may reciprocate in the axial direction together with the permanent magnet 146 .

The outer stator 141 may include coil winding bodies 141b, 141c, and 141d and a stator core 141a. The coil winding bodies 141b, 141c, and 141d may include a bobbin 141b and a coil 141c wound in a circumferential direction of the bobbin. The coil winding bodies 141b, 141c, and 141d may further include a terminal portion 141d for guiding the power line connected to the coil 141c to be drawn out or exposed to the outside of the outer stator 141. there is.

The stator core 141a may include a plurality of core blocks in which a plurality of laminations are stacked in a circumferential direction. The plurality of core blocks may be disposed to surround at least a portion of the coil winding bodies 141b and 141c.

A stator cover 149 is provided on 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 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 forward toward the frame 110 through the stator cover 149 , and may be coupled to the frame 110 .

That is, in a state in which one side of the motor is supported by the frame 110 and the other side is supported by the staker cover 149 , the cover fastening member 149a is connected to the stator cover 149 and the frame 110 . to conclude

Accordingly, in the present invention, the motor 140 and the frame 110 supporting the motor 140 and the stator cover 149 may be collectively referred to as a “motor assembly”.

In addition, since the frame 110 and the stator cover 149 are configured to support the motor 140 , they may be referred to as “motor support parts”.

The inner stator 148 is fixed to the outer periphery of the frame 110 . In addition, the inner stator 148 is configured by stacking a plurality of laminations in a circumferential direction from the outside of the frame 110 .

The compressor body 100 may further include a supporter 137 for supporting the piston 130 . The supporter 137 is coupled to the rear side of the piston 130 , and the muffler 150 may pass through the inside thereof. The piston flange part 132 , the magnet frame 138 and the supporter 137 may be fastened by a fastening member.

A 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 100 .

The compressor body 100 may further include a back cover 170 coupled to the stator cover 149 and extending rearwardly.

In detail, the back cover 170 may be coupled to the rear surface of the stator cover 149 . A spacer 181 may be interposed between the back cover 170 and the rear surface of the stator cover 149 . By adjusting the thickness of the spacer 181 , the distance from the stator cover 149 to the rear end of the back cover 170 may be determined. In addition, the back cover 170 may be spring supported by the supporter 137 .

The compressor body 100 may further include an inflow guide part 156 coupled to the back cover 170 to guide the refrigerant inflow into the muffler 150 . At least a portion of the inlet guide part 156 may be inserted into the suction muffler 150 .

The compressor body 100 may further include a plurality of resonance springs 176a and 176b whose respective natural frequencies are adjusted so that the piston 130 can perform a resonance motion.

The plurality of resonance springs 176a and 176b include a first resonance spring 176a supported between the supporter 137 and the stator cover 149 and between the supporter 137 and the back cover 170 . It may include a supported second resonance spring (176b). By the action of the plurality of resonance springs 176a and 176b, stable movement of the movable part reciprocating inside the linear compressor 10 is performed, and vibration or noise generated by the movement of the movable part can be reduced.

The compressor body 100 may further include a plurality of sealing members 127 and 128 for increasing the coupling force between the frame 110 and parts around the frame 110 .

In detail, the plurality of sealing members 127 and 128 may include a first sealing member 127 provided at a portion where the frame 110 and the discharge cover 160 are coupled. The plurality of sealing members 127 and 128 may further include a second sealing member 128 provided at a portion where the frame 110 and the cylinder 120 are coupled.

The first and second sealing members 127 and 128 may have a ring shape.

The one or more support devices 200 and 300 may include a suction-side support device 200 coupled to one side of the compressor body 100 . The suction-side support device 220 may be positioned at a portion where the refrigerant is sucked in the compressor body 100 .

The one or more support devices 200 and 300 may include a discharge-side support device 300 coupled to the other side of the compressor body 100 . The second support device 220 may be located in a portion from which the refrigerant is discharged from the compressor body 100 .

The axial vibration and radial vibration of the compressor body 100 are absorbed by the suction-side and discharge-side support devices 200 and 300 so that the compressor body 100 is formed by the shell 101 or the shell cover 102, 103) can be avoided.

5 is a perspective view showing a state in which the back cover is fixed to the first shell cover by the suction side support device, and FIGS. 6 and 7 are perspective views showing the suction side support device and the first shell cover according to an embodiment of the present invention. am.

8 is a perspective view of a first connection part according to an embodiment of the present invention, FIG. 9 is a perspective view of a buffer part according to an embodiment of the present invention, and FIG. 10 is a perspective view of a second connection part according to an embodiment of the present invention.

5 to 10 , the suction-side support device 200 may connect the central portion of the first shell cover 102 and the compressor body 100 .

In this case, the axis of the compressor body 100 can pass through the central portion of the first shell cover 102 , so that the compressor body 100 is operated in a radial direction to reduce the vibration of the compressor body 100 . can be minimized.

The suction-side support device 200 may include a leaf spring 210 . When the suction-side support device 200 is coupled to the first shell cover 102 , the leaf spring 210 may be fixed to the back cover 170 .

The leaf spring 210 may be disposed in a standing state in the shell 101 so that the shaft of the compressor body 100 passes through.

When the suction-side support device 200 includes the leaf spring 210 , the size of the suction-side support device 200 can be reduced, and the large lateral rigidity (compressor body) that is a characteristic of the leaf spring 210 . of the compressor body 100 is effectively absorbed by the vibration of the compressor body 100 due to the stiffness in the direction perpendicular to the axial direction) and small longitudinal stiffness (the stiffness in the axial direction of the compressor body). 101) can be prevented.

The suction-side support device 200 may further include a first connection part 220 connected to the leaf spring 210 and a second connection part 400 provided in the first shell cover 102 . .

In addition, the suction-side support device 200 may further include a buffer part 230 connected to each of the first connection part 220 and the second connection part 400 .

A portion of the first connection part 220 may be inserted into the accommodation body 402 of the second connection part 400 . In this case, a buffer 230 may be provided between the first connection part 220 and the second connection part 400 . Accordingly, the vibration transmitted from the leaf spring 210 is not transmitted to the second connection unit 400 but is absorbed by the buffer unit 230 . When the shock absorber 230 absorbs vibration, the transmission of vibration to the first shell cover 102 is minimized, so that noise can be minimized by the vibration of the first shell cover 102 .

The buffer 230 may be formed of a rubber material or a material capable of absorbing shock while being deformed by an external force.

Although not limited, the buffer part 230 may be fitted to the second connection part 400 , and the first connection part 220 may be fitted to the buffer part 230 .

The cross-section of the receiving body 402 of the second connection part 400 and the cross-section of the buffer part 230 are non-circular so that the buffer part 230 is prevented from being rotated with respect to the second connection part 400 . can be formed.

In addition, in order to prevent the first connection part 220 from being rotated with respect to the buffer part 230 , the cross-section of the portion inserted into the buffer part 230 in the first connection part 220 may be formed in a non-circular shape. can

In addition, the buffer part 230 and the first connection part 220 may be coupled to each other with directionality, but the cross-section of the buffer part 230 is not limited, but may be formed in a rectangular shape.

The first connection part 220 may be integrally formed with the leaf spring 210 by inserting injection, for example.

To prevent the first connection part 220 from being separated in the axial direction of the compressor body 100 in a state in which the first connection part 220 is inserted and injected into the leaf spring 210, the first connection part ( 220 , a first portion 221 in contact with a first surface of the leaf spring 210 and a second portion 222 in contact with a second surface opposite to the first surface of the leaf spring 210 . ) and a third part 223 connecting the first part 221 and the second part 222 .

The first part 221 of the first connection part 220 may be inserted into the buffer part 230 .

The first connection part 220 may include a refrigerant passage 224 through which the refrigerant sucked through the suction pipe 104 passes.

The refrigerant passage 224 may be formed to pass through the first to third portions 221 , 222 , and 223 .

The buffer part 230 may include a buffer body 231 and an extension part 236 extending from one end of the buffer body 231 .

The first part 221 of the first connection part 220 may be inserted into the buffer body 231 . At this time, the buffer body 231 is opened so that the refrigerant can pass through the first connection part 220 in a state in which the first part 221 of the first connection part 220 is inserted into the buffer body 231 . (234). The opening 234 may be aligned with the refrigerant passage 224 of the first connection part 220 .

The buffer body 231 has a first contact surface 231 in axial contact with the first connection part 220 in order to absorb the axial vibration transmitted from the leaf spring 210, and the leaf spring 210. It may include a second contact surface 232 in radial contact with the first connection part 220 in order to absorb the radial vibration transmitted from the.

The second contact surface 232 may surround the first portion 221 of the first connection part 220 . In addition, the opening 234 may be provided in the first contact surface 231 .

In addition, when the first part 221 of the first connection part 220 is inserted into the buffer body 231 , the third part 223 of the first connection part 220 comes into contact with the extension part 236 . can do.

According to this embodiment, the suction-side support device 200 is coupled to the first shell cover 102 , and as the suction-side support device 200 includes the buffer unit 230 , the compressor body ( Transmission of vibrations generated during the operation of 100) to the first shell cover 102 and the shell 101 can be prevented.

In the present embodiment, since the axial vibration of the compressor body 100 may be absorbed by the leaf spring 210 and the radial vibration may be absorbed by the buffer unit 230 , the compressor body 100 ) from being transmitted to the first shell cover 102 and the shell 101 can be effectively prevented.

The suction-side support device 200 is a first connector for preventing the first connection part 220 from being separated from the buffer part 230 in a state in which the first connection part 220 is inserted into the buffer part 230 . 1 It may further include a separation prevention unit.

The first separation prevention part, one or more protrusions 225 formed on the periphery of the first part 221 of the first connection part 220, and the one or more protrusions 225 are formed on the buffer body 231. may include one or more protrusion receiving portions 235 to be accommodated.

The one or more protrusion receiving portions 235 may be, for example, a groove or a hole. However, in order to increase the protrusion length of the at least one protrusion 225 , the at least one protrusion receiving part 235 is preferably a hole.

The one or more protrusion receiving portions 235 may be provided on the second contact surface 232 of the buffer body 231 .

Conversely, the first separation preventing portion, one or more protrusion receiving portions formed on the periphery of the first portion 221 of the first connecting portion 220, is formed in the buffer body 231, the one or more projection receiving It is also possible to include one or more protrusions accommodated in the portion.

Therefore, according to the present invention, the separation of the first connection part 220 from the buffer part 230 can be prevented by the first separation preventing part during the transport process of the linear compressor or the operation process of the compressor body.

On the other hand, the second connection portion 400, the receiving body 402 in which the buffer unit 230 can be accommodated, extending from the end of the receiving body 402, coupled to the first shell cover (102) It may include a coupling portion 404 that is.

For example, the buffer body 231 may be accommodated in the accommodation body 402 . In a state where the buffer body 231 is accommodated in the accommodation body 402 , the accommodation body 402 may contact the extension part 236 of the buffer unit 230 . Accordingly, direct contact of the receiving body 402 with the first connecting portion 220 is prevented.

In addition, the depth at which the buffer body 231 is accommodated in the accommodation body 402 may be limited by the extension part 236 .

A protrusion 405 is formed in the coupling portion 404 , and the protrusion 405 may be coupled to the first shell cover 102 by welding. In order for the coupling part 404 to be welded to the first shell cover 102 , the second connection part 400 may be formed of a metal material.

However, it should be noted that there is no limitation on the coupling method of the second connection part 400 and the first shell cover 102 in the present invention.

The suction-side support device 200 prevents the buffer part 230 from being separated from the second connection part 400 while a part of the buffer part 230 is inserted into the second connection part 400 . It may further include a second separation preventing unit for.

The second separation preventing part, the insertion protrusion 237 provided in the buffer part 230, and the insertion protrusion receiving part 406 provided in the second connection part 400, the insertion protrusion 237 is accommodated. may include

The insertion protrusion 237 may be inserted into the protrusion receiving part 406 in the axial direction of the compressor body 100 .

The insertion protrusion 237 may be provided on the buffer body 231 , and the insertion protrusion receiving part 406 may be provided on the receiving body 402 .

The insertion protrusion 237 may include a first protrusion 238 that is spaced apart from the extension part 236 in the cushioning body 231 .

The insertion protrusion accommodating part 406 includes an inlet 409 for inserting the first protrusion 238 , a receiving groove 407 for receiving the first protrusion 238 , and the receiving groove 407 . ) may include a neck portion 408 for preventing the first protrusion 238 accommodated in the receiving groove 407 from falling out. The neck 408 is positioned between the inlet 409 and the receiving groove 407 .

The diameter or thickness T of the first protrusion 238 is formed to be larger than the width of the inlet 409 . Accordingly, the first protrusion 238 can be easily inserted through the inlet 409 . The width W of the neck 408 is formed to be smaller than the diameter or thickness of the first protrusion 238 . For example, the width of the inlet 409 may be formed to decrease toward the receiving groove 407 side.

Accordingly, the first protrusion 238 is elastically deformed while the first protrusion 238 passes through the neck 408 , and after the first protrusion 238 passes through the neck 408 , It returns to its original shape and is accommodated in the receiving groove 407 .

At this time, in a state in which the first protrusion 238 is accommodated in the receiving groove 407 , the first protrusion 238 is pulled out of the receiving groove 407 by the neck 408 and moves toward the inlet 409 . is prevented from doing

Accordingly, according to the present invention, it is possible to prevent the buffer unit 230 from being separated from the second connection unit 400 during the transport process of the linear compressor or the operation process of the compressor body by the second separation preventing unit.

In this embodiment, the insertion protrusion 237 may further include a second protrusion 239 connecting the first protrusion 238 and the extension part 236 .

The thickness of the second protrusion 239 is formed to be smaller than the diameter or thickness of the first protrusion 238 .

A phenomenon in which the first protrusion 238 is damaged or torn from the buffer body 231 by the second protrusion 239 while the first protrusion 238 is accommodated in the protrusion receiving part 406 . This can be prevented.

11 is a view showing a state in which the first connection part, the buffer part, and the second connection part are coupled to each other, FIG. 12 is a cross-sectional view showing a state in which the suction side support device is connected to the first shell cover, and FIG. 13 is an embodiment of the present invention A plan view of a leaf spring according to an example.

11 to 13 , the leaf spring 210 includes an outer rim 211 , an inner rim 215 , and the outer rim 211 and the inner rim ( It may include a spiral-shaped connecting portion 219 connecting the 215 .

The inner rim 215 may include a plurality of rounded extension portions 216 that are spaced apart from each other in the circumferential direction. In addition, each connection part 219 is connected to each of the plurality of rounded extension parts 216 .

The first connection part 220 may be integrally formed with the inner rim 215 by inserting injection molding.

A first portion 221 of the first connection part 220 is in contact with a first surface of the inner rim 215 , and the second portion 222 is opposite to the first surface in the inner rim 215 . It is in contact with the second surface, which is the surface. A part of the third part 223 of the first connection part 220 connects the first part 221 and the second part 222 in the space formed by the inner circumferential surface 218 of the inner rim 215 . can

In this case, the diameters of the first part 221 and the second part 222 of the first connection part 220 may be larger than the diameters of the inner peripheral surface 218 of the inner rim 215 .

One on the inner rim 215 to prevent the first connector 220 from being rotated with respect to the leaf spring 210 in a state in which the first connector 220 is inserted and injected into the leaf spring 210 . The above holes 217 may be provided.

When a plurality of holes 217 are provided in the inner rim 215 , the plurality of holes may be disposed to be spaced apart from each other in a circumferential direction of the inner rim 215 . The plurality of holes may be radially spaced apart from the inner circumferential surface 218 of the inner rim 215 .

When the first connection part 220 is inserted and injected into the leaf spring 210 , the resin liquid for forming the first connection part 220 is filled in the plurality of holes 217 . Accordingly, after the first connection part 220 is inserted and injected into the leaf spring 210 , portions corresponding to the resin solution located in the plurality of holes 217 act as rotational resistance, so that the first connection part Rotation of 220 with respect to the leaf spring 210 can be prevented.

For example, one or more holes 217 may be formed in each of the plurality of rounded extension portions 216 . At this time, two or more holes 217 in each of the plurality of rounded extension parts 216 to prevent a portion of the first connection part 220 located in the hole 217 from being broken by a rotational force applied from the outside. This can be arranged. The two or more holes 217 may be disposed to be spaced apart from each other in the circumferential direction of the leaf spring 210 .

The third part 223 of the first connection part 220 may further include a rounded extension part 226 having the same shape as each of the rounded extension parts 218 of the inner rim 215 .

As the first connection part 220 includes a plurality of rounded extension parts 226 , when the axial vibration of the compressor body 100 is transmitted to the first connection part 220 , the inner rim 215 ) As the vibration is concentrated on a part of the inner rim 215, a phenomenon in which the inner rim 215 is vibrated in the radial direction can be prevented.

A plurality of inner extensions 213 may be provided on the inner circumferential surface 212 of the outer rim 211 . The plurality of inner extension portions 213 may be disposed to be spaced apart from each other in the circumferential direction of the outer rim 211 , and the connection portion 219 may be connected to each of the plurality of inner extension portions 213 .

According to the present embodiment, as each connection part 219 is connected to each of the inner extension parts 213 , it is possible to prevent the connection portion between the inner extension part 213 and the connection part 219 from being broken.

In addition, a fastening hole 214 through which a back cover fastening member 240 for attaching the leaf spring 210 to the back cover 170 may be formed in each of the plurality of inner extension parts 213 . .

The back cover fastening member 240 includes a cover insertion part 241 passing through the fastening hole 172 of the back cover 170 , a contact part 242 in contact with the back cover 170 , and the plate. It may include a spring insertion part 243 penetrating the fastening hole 214 of the spring 210 .

In this case, the diameter of the contact part 242 is larger than the diameter of each of the cover insertion part 241 and the spring insertion part 243 . Accordingly, when the contact part 242 comes into contact with the back cover 170 while the cover insertion part 241 penetrates the fastening hole 172 of the back cover 170 , the leaf spring 210 and the The back cover 170 may be spaced apart from each other by a predetermined interval.

Insert the spring so that the leaf spring 210 is prevented from being separated from the back cover fastening member 240 while the spring inserting part 243 penetrates the fastening hole 214 of the leaf spring 210 . A washer 250 may be coupled to the portion 243 .

The back cover 170 may include a cover body 171 in which the fastening hole 172 is formed, and a plurality of coupling legs 174 extending from the cover body 171 toward the motor 140 side. can In addition, each of the plurality of coupling legs 174 may be coupled to the rear surface of the stator cover 149 .

The number of the plurality of stoppers 500 and the number of the plurality of coupling legs 174 may be the same.

The plurality of stoppers 500 may extend from the inner circumferential surface of the first shell cover 102 toward the axis of the compressor body 100 . In addition, the plurality of stoppers 500 may be disposed to be spaced apart from each other in the circumferential direction on the inner circumferential surface of the first shell cover 102 . In addition, the plurality of coupling legs 174 may also be disposed to be spaced apart from each other in the circumferential direction of the cover body 171 .

The plurality of stoppers 500 include a fixing part 502 fixed to the inner circumferential surface of the first shell cover 102 , and an extension part bent in the radial direction of the compressor body 100 in the fixing part 502 . It may include a 504 and a contact portion 506 bent in the axial direction of the compressor body 100 in the extension portion 504 .

The fixing part 502 may be fixed to the inner circumferential surface of the first shell cover 102 by welding, but it should be noted that there is no limitation on the fixing method of the fixing part 502 in the present invention.

In addition, while the fixing part 502 is fixed to the inner circumferential surface of the first shell cover 102 and the back cover 170 collides with the stopper 500, the fixing part 502 is 1 The length of the fixing part 520 in the axial direction of the compressor body 100 to prevent separation from the shell cover 102, the first shell cover in the axial direction of the compressor body 100 It may be 1/2 or more of the length of the inner circumferential surface of (102).

In this case, the fixing part 502 and the contact part 506 may extend in opposite directions with respect to the extension part 504 .

In a state in which the compressor body 100 is fixed to the first shell cover 102 by the suction-side support device 200 , each of the plurality of coupling legs 174 is each of the plurality of stoppers 500 , respectively. It may be arranged to face the. Each of the plurality of coupling legs 174 may be disposed to be spaced apart from each of the plurality of stoppers 500 .

In a state in which the compressor body 100 is not operated, the distance between the shell 101 and the motor 140 is the distance between the frame 110 and the shell 101 and the stator cover 149 and the shell ( 101) is larger than the interval.

Therefore, according to the present invention, even when the compressor body 100 is vibrated in the radial direction, the motor 140 is prevented from directly collided with the shell 101 .

However, since the frame 110 and the stator cover 149 directly contact and support the motor 140 , at least one of the frame 110 and the stator cover 149 is attached to the shell 101 . When a collision occurs, an impact is transmitted to the motor 140 and there is a high possibility that the motor 140 may be damaged.

In the present invention, when the compressor body 100 vibrates in the radial direction, the frame 110 and the stator cover 149 are prevented from collide with the shell 101, that is, the motor assembly is In order to prevent the shell 101 from colliding, in the state in which the compressor body 100 is not operated, the distance between each of the plurality of coupling legs 174 and each of the plurality of stoppers 500 is, ) and the gap between the shell 101 and the stator cover 149 and the shell 101 are formed smaller than the gap. That is, the distance between each of the plurality of coupling legs 174 and the contact portions 506 of the plurality of stoppers 500 is smaller than the minimum distance between the motor assembly and the shell 101 .

Accordingly, even if the compressor body 100 vibrates in the radial direction in the process of transporting the linear compressor 10 , at least one of the plurality of coupling legs 174 is in contact with at least one of the plurality of stoppers 500 . Since the movement is limited, the frame 110 and the stator cover 149 are prevented from colliding with the shell 101, thereby preventing the motor 140 from being damaged.

The back cover 170 and the plurality of stoppers ( 500) may be formed of a metal material.

In addition, the back cover 170 is fastened with the stator cover 149 , and an impact caused by a collision between one or more of the plurality of coupling legs 174 and one of the plurality of stoppers 500 is generated by the staker. In order to minimize the transfer to the cover 149 , each of the contact portions 506 of the plurality of stoppers 500 may contact a portion adjacent to the cover body 171 in each of the plurality of coupling legs 174 .

For example, when the plurality of coupling legs 174 are bisected in the axial direction, each of the contact portions 506 of the plurality of stoppers 500 may be in contact with the region between the bisector line and the cover body 171 by vibration. .

According to the present invention, since the plurality of stoppers 500 are arranged to be spaced apart from each other in the circumferential direction of the first shell cover 102 , the frame 110 and the stator cover are independent of the vibration direction of the compressor body 100 . The collision of 149 with the shell 101 can be effectively prevented.

In addition, since the plurality of stoppers 500 are disposed on the first shell cover 102, it is prevented that the plurality of coupling legs 174 collide with the shell 101, thereby generating noise due to the collision. is prevented Of course, it is also possible that the plurality of stoppers 500 are formed on the shell 101 .

In addition, according to the present invention, since the contact portion 506 extends from the extension portion 504 in the axial direction of the compressor body 100 , the plurality of coupling legs are caused by radial vibration of the compressor body 100 . When one or more of 174 is in contact with one or more of the plurality of stoppers 500 , when one or more of the plurality of coupling legs 174 are in contact with one or more of the plurality of stoppers 500 are surface contact This allows the plurality of engaging levs 174 to be quickly aligned in a horizontal form.

Meanwhile, a depression 171a is formed in the cover body 171 . The recessed part 171a is recessed from the cover body 171 toward the motor 140 side. As shown in FIG. 8 in a state in which the compressor body 100 is not operated by the recessed part 171a, the first connection part 220 is spaced apart from the recessed part 171a.

When the compressor body 100 is moved toward the first connection part 220 side (the right direction in FIG. 12 ) by the axial vibration of the compressor body 100 , the recessed part 171a is the first When it comes into contact with the connection part 220 , the compressor body 100 is no longer able to move to the right. Accordingly, the axial movement distance of the compressor body 100 is reduced, and thus the leaf spring 210 is prevented from being excessively deformed.

That is, in the present invention, the first connection part 220 serves as a "stopper" for limiting movement in one direction when the compressor body 100 vibrates in the axial direction.

The reason for forming the recessed portion 171a in the cover body 171 in the present invention is to prevent an increase in the axial length of the linear compressor 10 and limit the axial movement of the compressor body 100 .

Meanwhile, a refrigerant opening 173 through which the refrigerant flowing through the refrigerant passage 224 of the first connection unit 220 may flow may be provided in the depression 171a. Accordingly, the refrigerant sucked through the suction pipe 104 may be introduced into the suction muffler (refer to 150 in FIG. 3 ) through the refrigerant opening 173 of the first connection part 220 and the back cover 170 . there is.

10: linear compressor 100: compressor body
101: shell 102: first shell cover
103: second shell cover
200: suction side support device 210: leaf spring
220: first connection 225: protrusion
230: buffer portion 235: projection receiving portion
237: insertion protrusion 400: second connection part
406: insertion protrusion receiving portion

Claims (14)

shell;
a shell cover covering the shell;
a compressor body accommodated in the shell and configured to compress the refrigerant; and
and a support device supporting the compressor body in the shell and connecting the compressor body and the shell cover,
The support device may include: a first connection part connected to the compressor body;
a second connection part provided on the shell cover;
a buffer unit connected to each of the first connection unit and the second connection unit; and
and a separation prevention part for preventing the buffer part from being separated from the first connection part while the buffer part and the first connection part are connected. The method of claim 1,
The separation prevention unit includes one or more protrusions provided on any one of the first connection unit and the buffer unit;
and one or more projection accommodating portions provided on the other of the first connecting portion and the buffering portion and receiving the one or more projections. 3. The method of claim 2,
The first connection part includes a first part inserted into the buffer part,
The buffer unit includes a buffer body into which the first part is inserted,
The one or more protrusions are provided on any one of the first part and the buffer body,
The at least one protrusion accommodating part is provided in the other one of the first part and the buffer body. 4. The method of claim 3,
The first portion includes a first contact surface in contact with the buffer body in the axial direction of the compressor body;
a second contact surface extending from the first contact surface and in contact with the buffer body in a radial direction of the compressor body;
The at least one protrusion or the at least one protrusion receiving part is formed on the second contact surface. 4. The method of claim 3,
The buffer body is a linear compressor that is inserted into the second connection part. shell;
a shell cover covering the shell;
a compressor body accommodated in the shell and configured to compress the refrigerant; and
and a support device supporting the compressor body in the shell and connecting the compressor body and the shell cover,
The support device may include: a first connection part connected to the compressor body;
a second connection part provided on the shell cover;
a buffer unit connected to each of the first connection unit and the second connection unit; and
and a separation prevention part for preventing the buffer part and the second connection part from being separated while the buffer part and the second connection part are connected. 7. The method of claim 6,
The separation preventing unit, the insertion protrusion provided in the buffer unit,
The linear compressor is provided in the second connection portion, and includes an insertion projection receiving portion into which the insertion projection is inserted. 8. The method of claim 7,
The buffer unit includes a buffer body,
The second connection part includes a receiving body in which the buffer body is accommodated,
The insertion protrusion is provided on the buffer body,
The insertion protrusion accommodating portion is a linear compressor provided in the accommodating body. 9. The method of claim 8,
The insertion protrusion includes a first protrusion protruding from the cushioning body,
The insertion protrusion receiving portion,
an inlet having a width greater than the diameter or thickness of the first protrusion;
a receiving groove in which the first protrusion is accommodated;
and a neck portion positioned between the inlet and the receiving groove and having a width smaller than a diameter or thickness of the first projection to prevent the first projection from falling out of the receiving groove. 10. The method of claim 9,
The buffer unit includes an extension portion extending from the buffer body and in contact with the receiving body in a state in which the buffer body is accommodated in the receiving body,
The insertion protrusion further includes a second protrusion connecting the extension portion and the first protrusion and having a thickness smaller than a diameter or thickness of the first protrusion. 9. The method of claim 8,
A portion of the first connection portion is a linear compressor that is inserted into the buffer body. 7. The method of claim 1 or 6,
The support device further includes a leaf spring connected to the compressor body,
The first connecting portion is connected to the leaf spring. 7. The method of claim 1 or 6,
The shell cover is provided with a suction pipe through which the refrigerant is sucked,
The buffer unit is provided with an opening through which the refrigerant sucked through the suction pipe passes,
The first connection portion is provided with a refrigerant passage through which the refrigerant that has passed through the opening flows. shell;
a shell cover covering the shell;
a compressor body accommodated in the shell and configured to compress the refrigerant; and
and a support device supporting the compressor body in the shell and connecting the compressor body and the shell cover,
The support device may include: a first connection part connected to the compressor body;
a buffer part into which the first connection part is inserted;
a second connection part provided on the shell cover and into which the buffer part is inserted;
a first separation prevention part for preventing the first connection part from being separated from the buffer part; and
and a second separation prevention unit for preventing the buffer unit from being separated from the second connection unit.

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