KR102244362B1 - Linear compressor and linear motor - Google Patents

Abstract

The present invention relates to a linear motor.
A linear motor according to an aspect includes a bobbin having a coupling mechanism, a coil wound around the bobbin and having an input terminal and an output terminal, a plurality of stator cores surrounding the bobbin, and coupled to the coupling mechanism, the input terminal And a terminal device having an input terminal portion to be connected and an output terminal portion to which the output terminal is connected.

Description

Linear compressor and linear motor

The present specification relates to a linear compressor and a linear motor.

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

If these compressors are classified largely, a reciprocating compressor that compresses the refrigerant while the piston linearly reciprocates inside the cylinder by forming a compression space through which the working gas is sucked and discharged between the piston and the cylinder. ), and a compression space in which working gas is sucked and discharged between the eccentrically rotated roller and the cylinder is formed, and the roller is rotated eccentrically along the inner wall of the cylinder to compress the refrigerant, and a rotary compressor and orbiting scroll A compressed space through which the working gas is sucked and discharged is formed between the scroll and the fixed scroll, and the orbiting scroll may be divided into a scroll compressor that compresses the refrigerant while rotating along the fixed scroll.

Recently, among the reciprocating compressors, in particular, linear compressors having a simple structure have been developed that can improve compression efficiency without mechanical loss due to motion conversion by allowing a piston to reciprocate linear motion.

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

9 is a view showing an outer stator of a linear motor according to the prior art.

Referring to FIG. 9, the outer stator 1 of the linear motor according to the prior art includes a bobbin 2 on which a coil is wound, and a plurality of stator cores disposed at predetermined intervals in the circumferential direction of the bobbin 2 ( Includes 3).

In addition, an input terminal portion 4 to which the input end of the coil is connected is integrally formed in a region between the two stator cores 3 adjacent to the bobbin 2. In addition, an output terminal portion 5 to which an output terminal of the coil is connected is integrally formed in a region between the other two stator cores 3 adjacent to the bobbin 2.

However, according to the linear motor of the prior art, since the input end coupling part 4 and the output end coupling part 5 are designed separately from the bobbin, it is difficult to design and manufacture the structure of the bobbin.

In addition, when it is desired to reduce the size of the linear motor, it is more difficult to form the input terminal portion 4 and the output terminal portion 5 on the bobbin.

In addition, a terminal for supplying power must be connected to the input terminal portion 4 and the output terminal portion 5, but since the input terminal portion 4 and the output terminal portion 5 are formed by being divided, a plurality of terminals are connected to each input terminal portion 4 ) And the output terminal part 5, the work is cumbersome.

An object of the present invention is to provide a linear motor and a linear compressor capable of configuring a terminal portion to which terminals are connected regardless of size.

A linear motor according to an aspect includes a bobbin having a coupling mechanism, a coil wound around the bobbin and having an input terminal and an output terminal, a plurality of stator cores surrounding the bobbin, and coupled to the coupling mechanism, and the input terminal And a terminal device having an input terminal portion to be connected and an output terminal portion to which the output terminal is connected.

In addition, the coupling mechanism may be disposed between two stator cores adjacent to the bobbin.

In addition, the terminal mechanism may be spaced apart from the plurality of stator cores in a state coupled to the coupling mechanism.

In addition, one or more holes through which the input terminal and the output terminal of the coil pass may be formed in the terminal device.

In addition, the terminal mechanism may be slidingly coupled to the coupling mechanism.

In addition, the coupling mechanism may include an extension portion extending in one direction from the bobbin, and a plurality of coupling ribs extending in a direction inclined with the extension portion on both sides of the extension portion.

In addition, the terminal mechanism may include a plurality of rib coupling portions coupled to the plurality of coupling ribs and spaced apart from each other.

In addition, the coupling mechanism includes a first coupling portion and a second coupling portion spaced apart from the first coupling portion, and the terminal mechanism may be coupled to the first coupling portion and the second coupling portion, respectively.

In addition, the first coupling portion includes a first extension portion extending in one direction from the bobbin, and a first coupling rib bent in the first extension portion, and the second coupling portion extends in one direction from the bobbin. And a second coupling rib extending in a direction opposite to an extension direction of the first coupling rib from the second extension portion.

In addition, the terminal mechanism may include a plurality of rib coupling portions spaced apart from each other and coupled to the first coupling rib and the second coupling rib.

In addition, one of the coupling mechanism and the terminal mechanism may be provided with a hook, and the other may be provided with a hook slot to which the hook is coupled.

In addition, a coupling protrusion may be formed in the terminal mechanism, and a coupling groove for coupling the coupling protrusion may be formed in the coupling mechanism.

A linear compressor according to another aspect, the cylinder; A piston capable of reciprocating in the axial direction inside the cylinder; And a linear motor that provides power to the piston, wherein the linear motor includes: a first stator; A second stator disposed to be spaced apart from the first stator; And a permanent magnet movable in an axial direction between the first stator and the second stator, wherein the first stator includes a bobbin on which a coil is wound, a plurality of stator cores surrounding the bobbin, and the bobbin And a coupling mechanism disposed between two adjacent stator cores among the plurality of stator cores, and a terminal mechanism coupled to the coupling mechanism and connected to the coil.

According to the proposed invention, since the terminal portion is not formed on the bobbin, the structure of the bobbin is simplified, and the terminal portion can be configured regardless of the size of the bobbin or the linear motor.

That is, even when the size of a bobbin or a linear motor is reduced, a terminal portion is formed separately and coupled to the bobbin, so that a terminal portion can be configured and a coil can be connected.

In addition, as the terminal portion is spaced apart from the bobbin in the axial direction, a space for connecting the input terminal and the output terminal of the coil to the terminal portion is secured between the terminal portion and the bobbin, so that the operator can easily connect the input terminal and the output terminal of the coil. There is an advantage of being able to connect to the terminal part.

In addition, since the terminal portion includes an input terminal portion and an output terminal portion, it is sufficient to couple one terminal to the terminal portion, so that the structure of the terminal is rigid, and an operator can easily connect the terminal to the terminal portion.

1 is a cross-sectional view showing a configuration of a linear compressor according to a first embodiment.
2 is a perspective view of a linear motor according to the first embodiment.
3 is a view showing a state in which a terminal mechanism is coupled to the bobbin according to the first embodiment.
Figure 4 is a perspective view showing the terminal portion of Figure 3;
5 is a view showing a state in which a terminal mechanism is coupled to a bobbin according to a second embodiment.
6 is a view showing a state in which a terminal mechanism is coupled to a bobbin according to a third embodiment.
7 is a view showing a state in which a terminal mechanism is coupled to a bobbin according to a fourth embodiment.
8 is a schematic view showing a linear compressor according to a fifth embodiment.
9 is a view showing an outer stator of a linear motor according to the prior art.

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

In addition, in describing the constituent elements of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are for distinguishing the constituent element from other constituent elements, and the nature, order, or order of the constituent element is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

In addition, it should be noted that the spirit of the present invention includes not only a plurality of embodiments themselves, but also embodiments derived by a combination of a plurality of embodiments.

1 is a cross-sectional view showing a configuration of a linear compressor according to a first embodiment.

Referring to FIG. 1, the linear compressor 100 according to the first embodiment includes a shell 101 having a substantially cylindrical shape, a first cover 102 coupled to one side of the shell 101, and the other side. A second cover 103 may be included.

For example, the linear compressor 100 may be installed on the product while lying in the horizontal direction, the first cover 102 is on the right side of the shell 101, the second cover 103 is the It may be located on the left side of the shell 101.

In a broader sense, the first cover 102 and the second cover 103 can be understood as one configuration of the shell 101.

The linear compressor 100 imparts driving force to the cylinder 120 provided inside the shell 101, the piston 130 and the piston 130 reciprocating and linearly moving inside the cylinder 120 It may further include a linear motor 200.

When the linear motor 200 is driven, the piston 130 may reciprocate at high speed. The operating frequency of the linear compressor 100 according to the present embodiment is approximately 100 Hz.

In detail, the linear compressor 100 may further include a suction unit 104 through which refrigerant is introduced and a discharge unit 105 through which the refrigerant compressed in the cylinder 120 is discharged.

The suction unit 104 may be coupled to the first cover 102, and the discharge unit 105 may be coupled to the second cover 103.

The refrigerant sucked through the suction part 104 flows into the piston 130 through the suction muffler 150. In the process of passing the refrigerant through the suction muffler 150, noise may be reduced. The suction muffler 150 may include a first muffler 151 and a second muffler 153 coupled to the first muffler 151. At least a portion of the suction muffler 150 may be located inside the piston 130.

The piston 130 may include a piston body 131 having a substantially cylindrical shape and a piston flange portion 132 extending in a radial direction from the piston body 131.

The piston body 131 reciprocates within the cylinder 120, and the piston flange portion 132 may reciprocate outside the cylinder 120.

The piston 130 may be made of a non-magnetic aluminum material (aluminum or aluminum alloy). Since the piston 130 is made of an aluminum material, the magnetic flux generated by the linear motor 200 is transmitted to the piston 130 to prevent leakage to the outside of the piston 130. In addition, the piston 130, although not limited, may be formed by a forging method.

Meanwhile, the cylinder 120 may be made of a non-magnetic aluminum material (aluminum or aluminum alloy). In addition, the material composition ratio of the cylinder 120 and the piston 130, that is, the type and composition ratio may be the same.

Since the cylinder 120 is made of an aluminum material, the magnetic flux generated by the linear motor 200 is transmitted to the cylinder 120 to prevent leakage to the outside of the cylinder 120. In addition, the cylinder 120, although not limited, may be formed by an extrusion rod processing method.

In addition, since the piston 130 and the cylinder 120 are made of the same material (aluminum), the coefficients of thermal expansion are the same. During the operation of the linear compressor 100, a high temperature (about 100° C.) environment is created inside the shell 101. Since the piston 130 and the cylinder 120 have the same coefficient of thermal expansion, the piston 130 And the cylinder 120 can be thermally deformed by the same amount.

As a result, since the piston 130 and the cylinder 120 are thermally deformed in different sizes or directions, it is possible to prevent interference with the cylinder 120 between movements with the piston 130.

The cylinder 120 may accommodate at least a portion of the suction muffler 150 and at least a portion of the piston 130.

Inside the cylinder 120, a compression space P in which the refrigerant is compressed by the piston 130 may be formed. In addition, a suction hole 133 for introducing a refrigerant into the compression space P is formed in a front portion of the piston 130, and the suction hole 133 is selectively disposed in front of the suction hole 133. An opening intake valve 135 is provided. A fastening hole through which a predetermined fastening member is coupled may be formed in an approximately central portion of the suction valve 135.

In front of the compression space P, a discharge cover 160 forming a discharge space or discharge flow path of the refrigerant discharged from the compression space P and the discharge cover 160 is coupled to the compressed space P Discharge valve assemblies 161, 162, and 163 for selectively discharging the refrigerant compressed in may be provided.

The discharge valve assembly (161, 162, 163) is opened when the pressure of the compression space (P) is equal to or higher than the discharge pressure, and a discharge valve (161) for introducing the refrigerant into the discharge space of the discharge cover (160), A valve spring 162 provided between the discharge valve 161 and the discharge cover 160 to provide an elastic force in the axial direction, and a stopper 163 for limiting the amount of deformation of the valve spring 162 may be included. .

Here, the compression space P is a space formed between the suction valve 135 and the discharge valve 161. In addition, the suction valve 135 may be disposed on one side of the compression space P, and the discharge valve 161 may be disposed on the other side of the compression space P, that is, on the opposite side of the suction valve 135. have. In addition, the discharge valve 161 may be movably disposed at a front end of the cylinder 120.

In addition, the "axial direction" may be understood as a direction in which the piston 130 reciprocates or a direction in which the "permanent magnet" reciprocates.

In the "axial direction", a direction from the suction part 104 toward the discharge part 105, that is, a direction in which the refrigerant flows, is defined as "front", and the opposite direction is defined as "rear".

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

The stopper 163 may be seated on the discharge cover 160, and the valve spring 162 may be seated at the rear of the stopper 163. In addition, the discharge valve 161 is coupled to the valve spring 162, and the rear or rear portion of the discharge valve 161 is positioned to be supported on the front surface of the cylinder 120.

The valve spring 162 may include, for example, a plate spring.

In the course of the piston 130 reciprocating and linear movement 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 sucked into the compression space (P). On the other hand, when the pressure in the compression space P is 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) is greater than or equal to the discharge pressure, the valve spring 162 is deformed to open the discharge valve 161, and the refrigerant is discharged from the compression space (P) to be discharged. It is discharged to the discharge space of the cover 160.

In addition, the refrigerant flowing through the discharge space of the discharge cover 160 flows into the roof pipe 165. The roof pipe 165 is coupled to the discharge cover 160 and extends to the discharge part 105, and guides the compressed refrigerant in the discharge space to the discharge part 105. For example, the roof pipe 165 has a shape wound in a predetermined direction and extends roundly, and is coupled to the discharge part 105.

The linear compressor 100 may further include a frame 110 coupled to the outside of the cylinder 120. The frame 110 is configured to fix the cylinder 120 and may 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 accommodated inside the frame 110. In addition, the discharge cover 160 may be coupled to the front surface of the frame 110.

On the other hand, at least some of the gas refrigerant of the high-pressure gas refrigerant discharged through the open discharge valve 161 is directed toward the outer circumferential surface of the cylinder 120 through the space where the cylinder 120 and the frame 110 are combined. It can be fluid.

In addition, the refrigerant is introduced into the cylinder 120 through the nozzle unit 123 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 apart from the inner circumferential surface of the cylinder 120. Accordingly, the introduced refrigerant may function as a “gas bearing” that reduces friction with the cylinder 120 during the reciprocating movement of the piston 130.

The linear motor 200 includes a first stator 210 disposed to surround the cylinder 120, a second stator 250 disposed spaced apart from the first stator 210, and the second stator 250 A permanent magnet 260 positioned in a space between the first stator 210 and the second stator 250 may be included.

In the present specification, one of the first stator 210 and the second stator 250 may be an outer stator, and the other may be an inner stator.

In FIG. 1, for example, the first stator 210 is an outer stator, and the second stator 250 is an inner stator.

The permanent magnet 260 may linearly reciprocate by mutual electromagnetic force between the first stator 210 and the second stator 250. In addition, the permanent magnet 260 may be composed of a single magnet having one pole or a magnet having three poles. In addition, a plurality of permanent magnets 260 may be provided outside the second stator 250.

The permanent magnet 260 may be coupled to the piston 130 by a connection member 138. In detail, the connecting member 138 may be coupled to the piston flange portion 132 to extend by bending toward the permanent magnet 260. As the permanent magnet 260 reciprocates, the piston 130 may reciprocate in the axial direction together with the permanent magnet 260 by the connection member 138.

In addition, the linear motor 200 may further include a fixing member 262 for fixing the permanent magnet 260 to the connection member 138. The fixing member 262 may be formed by mixing glass fiber or carbon fiber and resin. The fixing member 262 is provided to surround the inner and outer sides of the permanent magnet 260, so that the permanent magnet 260 and the connection member 138 may be firmly maintained in a coupled state.

The first stator 210 includes a coil winding body 220, 240, and a plurality of stator cores (see 211 in FIG. 2) installed at regular intervals in the circumferential direction of the coil winding body 220, 240 can do.

In addition, each of the plurality of stator cores 211 is configured by stacking a plurality of laminations in a circumferential direction, and may be disposed to surround the coil winding bodies 220 and 240.

The coil winding bodies 220 and 240 may include a bobbin 220 and a coil 240 wound in a circumferential direction of the bobbin 220. The cross section of the coil 240 may have a polygonal shape, and for example, may have a hexagonal shape.

Meanwhile, the linear compressor 100 includes a supporter 137 supporting the piston 130 and a back cover 170 that is spaced apart from one side of the supporter 137 and is spring-coupled to the supporter 137. It may contain more.

The supporter 137 may be coupled to the piston flange portion 132 and the connection member 138 by a predetermined fastening member.

In front of the back cover 170, a suction guide part 155 is coupled. The suction guide part 155 guides the refrigerant sucked through the suction part 104 to flow into the suction muffler 150.

The linear compressor 100 may further include a plurality of springs 176 whose natural frequencies are adjusted so that the piston 130 can perform resonant motion.

The plurality of springs 176 include a first spring supported between the supporter 137 and the stator cover 270 and a second spring supported between the supporter 137 and the back cover 170 can do.

The linear compressor 100 may further include leaf springs 172 and 174 provided on both sides of the shell 101 so that the internal components of the linear compressor 100 are supported by the shell 101. .

The leaf springs 172 and 174 may include a first leaf spring 172 coupled to the first cover 102 and a second leaf spring 174 coupled to the second cover 103. . For example, the first plate spring 172 may be fitted into a portion where the shell 101 and the first cover 102 are coupled, and the second plate spring 174 is 2 The cover 103 may be arranged to be fitted to a portion to which it is coupled.

2 is a perspective view of a linear motor according to the first embodiment, FIG. 3 is a view showing a state in which a terminal mechanism is coupled to the bobbin according to the first embodiment, and FIG. 4 is a perspective view showing the terminal mechanism of FIG. 3.

2 to 4, a coupling mechanism 221 for coupling a terminal mechanism 230 may be provided between two stator cores 211 adjacent to the bobbin 220.

That is, in the present embodiment, the terminal mechanism 230 is not integrally formed with the bobbin 220 and may be coupled to the bobbin 220 while being manufactured separately from the bobbin 220.

Accordingly, according to the present invention, the structure of the bobbin 220 is simplified, and it is possible to configure the terminal mechanism 230 regardless of the size of the bobbin 220 or the size of the linear motor 200. .

The terminal mechanism 230 may include a body 235 including an input terminal portion 231 to which an input terminal of the coil 240 is connected and an output terminal portion 232 to which an output terminal of the coil 240 is connected. .

In a state in which the terminal mechanism 230 is coupled to the coupling mechanism 221, the input terminal and the output terminal of the coil 240 may be connected to the input terminal portion 231 and the output terminal portion 232.

The coupling mechanism 221 may include a plurality of coupling portions 222 and 223 spaced apart from each other.

The plurality of coupling portions 222 and 223 may include a first coupling portion 222 and a second coupling portion 223. The terminal mechanism 230 may be coupled to each of the first coupling portion 222 and the second coupling portion 223.

Each of the coupling portions 222 and 223 includes an extension portion 224 extending in an axial direction from the bobbin 220 and a coupling extending in a direction inclined with the extension portion 224 from the extension portion 224 It may include a rib 225.

In this case, the coupling ribs 225 of each of the first coupling portion 222 and the second coupling portion 223 may extend in a direction away from or close to each other from the extension portion 224. In FIG. 3, for example, coupling ribs 225 of each of the first coupling portion 222 and the second coupling portion 223 extend in a direction away from the extension portion 224.

For example, the coupling rib 225 of the first coupling portion 222 may extend in a direction opposite to the coupling rib 225 of the second coupling portion 223.

The terminal mechanism 230 may be slidingly coupled to the coupling mechanism 221 for example.

The terminal mechanism 230 may include a plurality of rib coupling portions 233 and 234 to which the coupling ribs 225 of the coupling portions 222 and 223 are coupled. The plurality of rib coupling portions 233 and 234 may be spaced apart from each other, and a coupling rib 225 of each of the coupling portions 222 and 223 may be positioned between the plurality of rib coupling portions 233 and 234.

The body 235 of the terminal mechanism 230 may include one or more holes 236 and 237 through which each of the input and output ends of the coil 240 passes. The operator may connect the input terminal and the output terminal of the coil 240 to the input terminal unit 231 and the output terminal unit 232 while passing through the holes 236 and 237. In FIG. 4, for example, two holes are provided in the terminal mechanism 230, but it is also possible for the input terminal and the output terminal to pass through one hole at the same time.

A terminal 290 to which a wire for supplying power is connected may be connected to the terminal device 230.

In this case, the terminal mechanism 230 may be spaced apart from the bobbin 220 in the axial direction. In addition, the terminal mechanism 230 may be spaced apart from the stator core 211 in the axial direction while being coupled to the coupling mechanism 221.

Therefore, according to the present embodiment, since a space for connecting the input terminal and the output terminal of the coil 240 to the terminal device 230 is secured between the terminal device 230 and the bobbin 220, the operator is easy. There is an advantage in that the input terminal and the output terminal of the coil 240 can be connected to the terminal device 230.

In addition, since the terminal mechanism 230 includes an input terminal portion 231 and an output terminal portion 232, one terminal 290 may be coupled to the terminal mechanism 230, so that the structure of the terminal 290 is It is rigid and has the advantage that an operator can easily connect the terminal 290 to the terminal mechanism 230.

In the above embodiment, it has been described that the terminal 290 is connected to the terminal device 230 while the input terminal and the output terminal of the coil 240 are connected to the terminal device 230. It is also possible to be directly connected to the terminal 290 while the input terminal and the output terminal of) pass through the terminal mechanism 230.

5 is a view showing a state in which a terminal mechanism is coupled to a bobbin according to a second embodiment.

This embodiment is the same as the first embodiment in other parts, except that there is a difference in the shape of the coupling mechanism. Therefore, hereinafter, only the characteristic parts of the present embodiment will be described, and the same parts as those of the first embodiment will be referred to the description of the first embodiment.

Referring to FIG. 5, the bobbin 220 according to the second embodiment may include a coupling mechanism 226.

The coupling mechanism 226 includes an extension portion 227 extending in an axial direction from the bobbin 220, and a plurality of coupling ribs extending in a direction inclined with the extension portion 227 from the extension portion 227 (228) may be included. For example, the plurality of coupling ribs 228 may extend in a direction away from each other from the extension part 227.

The terminal device 280 of the present embodiment may include a plurality of rib coupling portions 281 and 282 to which the plurality of coupling ribs 228 are coupled.

According to the present embodiment, there is an advantage that the configuration of the terminal mechanism 280 is simplified.

6 is a view showing a state in which a terminal mechanism is coupled to a bobbin according to a third embodiment.

This embodiment is the same as the first embodiment in other parts, except that there is a difference in the shape of the coupling mechanism. Therefore, hereinafter, only the characteristic parts of the present embodiment will be described, and the same parts as those of the first embodiment will be referred to the description of the first embodiment.

Referring to FIG. 6, the bobbin 220 according to the third embodiment may include a coupling mechanism including a plurality of coupling portions 421. The plurality of coupling portions 421 may include a hook 422, and the terminal portion 430 may include a hook slot to which the hook 422 is coupled.

Alternatively, on the contrary, the terminal mechanism 430 may include a hook, and the coupling mechanism may include a hook slot.

In this embodiment, the terminal mechanism 430 may be coupled to the coupling mechanism in an axial direction, for example.

7 is a view showing a state in which a terminal mechanism is coupled to the bobbin according to the fourth embodiment.

This embodiment is the same as the first embodiment in other parts, except that there is a difference in the shape of the coupling mechanism. Therefore, hereinafter, only the characteristic parts of the present embodiment will be described, and the same parts as those of the first embodiment will be referred to the description of the first embodiment.

Referring to FIG. 7, the terminal device 450 according to the fourth embodiment includes a coupling protrusion 452, and a coupling mechanism 440 formed on the bobbin 220 is a coupling groove for coupling the coupling protrusion. (442) may be included.

Alternatively, on the contrary, the coupling mechanism 440 may include the coupling protrusion 452, and the terminal mechanism 450 may include a coupling groove 442 to which the coupling protrusion 452 is coupled.

8 is a diagram schematically showing a linear compressor according to a fifth embodiment.

This embodiment is the same as the first embodiment with respect to the structure of the linear motor, but there is a difference in the lubrication method between the piston and the cylinder. Therefore, hereinafter, only characteristic parts of the present embodiment will be described.

Referring to FIG. 8, the linear compressor 300 according to the present embodiment may include a cylinder 320, a piston 330, a linear motor 400, and an oil supply device 360.

A predetermined oil may be stored in a shell forming the outer shape of the linear compressor 300. In addition, the oil supply device 360 for pumping oil may be provided under the shell. The oil supply device 360 may be operated by vibration generated as the piston 330 reciprocates and linearly moves to pump oil upward.

The linear compressor 300 may further include an oil supply pipe 365 for guiding the flow of oil from the oil supply device 360. The oil supply pipe 365 may extend from the oil supply device 360 to a space between the cylinder 320 and the piston 330.

The oil pumped from the oil supply device 360 is supplied to the space between the cylinder 320 and the piston 330 through the oil supply pipe 365 to perform cooling and lubrication.

In the above, even if all the constituent elements constituting the embodiments of the present invention have been described as being combined into one or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all the constituent elements may be selectively combined and operated in one or more. In addition, terms such as "include", "consist of" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components. It should not be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: linear compressor 110: frame
120: cylinder 130: piston
200: linear motor 210: first stator
220: bobbin 221: coupling mechanism
230: terminal mechanism 240: coil
250: second stator 260: permanent magnet

Claims (13)

A ring-shaped bobbin having a coupling mechanism,
A coil wound around the bobbin and having an input terminal and an output terminal,
A plurality of stator cores surrounding the bobbin and spaced apart from each other along the circumferential direction of the bobbin,
And a terminal mechanism spaced apart from the bobbin in an axial direction and coupled to the coupling mechanism, and comprising an input terminal portion to which the input terminal is connected and an output terminal portion to which an output terminal is connected,
A terminal to which a wire for supplying power is connected is connected to the terminal device,
Each of the plurality of stator cores is formed by stacking a plurality of laminations in a circumferential direction,
The coupling mechanism is a linear motor provided between two adjacent stator cores among the plurality of stator cores in the bobbin. delete The method of claim 1,
The terminal mechanism is a linear motor that is spaced apart from the plurality of stator cores in a state coupled to the coupling mechanism. The method of claim 1,
The linear motor having at least one hole through which the input terminal and the output terminal of the coil pass through the terminal mechanism. The method of claim 1,
The terminal mechanism is a linear motor that is slidingly coupled to the coupling mechanism. The method of claim 1,
The coupling mechanism includes an extension portion extending in one direction from the bobbin, and a plurality of coupling ribs extending in a direction inclined with the extension portion on both sides of the extension portion. The method of claim 6,
The terminal mechanism is coupled to the plurality of coupling ribs, the linear motor comprising a plurality of rib coupling portions spaced apart from each other. The method of claim 1,
The coupling mechanism includes a first coupling portion and a second coupling portion spaced apart from the first coupling portion,
The terminal mechanism is a linear motor coupled to the first coupling portion and the second coupling portion, respectively. The method of claim 8,
The first coupling portion includes a first extension portion extending in one direction from the bobbin, and a first coupling rib bent at the first extension portion,
The second coupling portion, a linear motor including a second extension portion extending in one direction from the bobbin, and a second coupling rib extending in a direction opposite to an extension direction of the first coupling rib from the second extension portion. The method of claim 9,
The terminal mechanism is spaced apart from each other and includes a plurality of rib coupling portions coupled to the first coupling rib and the second coupling rib. The method of claim 1,
Any one of the coupling mechanism and the terminal mechanism is provided with a hook,
The other linear motor is provided with a hook slot to which the hook is coupled. The method of claim 1,
A coupling protrusion is formed in the terminal mechanism,
A linear motor in which a coupling groove for coupling the coupling protrusion is formed in the coupling mechanism. cylinder;
A piston capable of reciprocating in the axial direction inside the cylinder;
Including a linear motor for providing power to the piston,
The linear motor,
A first stator;
A second stator disposed to be spaced apart from the first stator; And
It includes a permanent magnet movable in the axial direction between the first stator and the second stator,
The first stator includes a ring-shaped bobbin around which a coil is wound,
A plurality of stator cores surrounding the bobbin and spaced apart from each other along the circumferential direction of the bobbin,
A coupling mechanism disposed between two adjacent stator cores among the plurality of stator cores in the bobbin,
It is spaced apart from the bobbin in an axial direction and coupled to the coupling mechanism, and includes a terminal mechanism to which the coil is connected,
Each of the plurality of stator cores is formed by stacking a plurality of laminations in a circumferential direction,
A terminal to which a wire for supplying power is connected is connected to the terminal device,
The terminal mechanism is a linear compressor having an input terminal portion and an output terminal portion to which the input terminal and the output terminal of the coil are respectively connected.

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