WO2023191265A1

WO2023191265A1 - Reciprocating compressor

Info

Publication number: WO2023191265A1
Application number: PCT/KR2023/000305
Authority: WO
Inventors: 손영부; 김진국; 이종목; 장석종
Original assignee: 엘지전자 주식회사
Priority date: 2022-03-30
Filing date: 2023-01-06
Publication date: 2023-10-05

Abstract

A discharge unit of a reciprocating compressor according to an embodiment of the present specification may include a pulsation reducing member located inside a discharge muffler, wherein the pulsation reducing member may include a partition wall member and/or an extension part. The partition wall member may include a first partition wall located on the inner surface of the bottom portion of a muffler cover and protruding toward a muffler body, and a second partition wall located on the inner surface of the bottom portion of the muffler body and protruding toward the muffler cover. In addition, the extension part may be formed as a part of a discharge hose or may be a part manufactured separately from and connected to the discharge hose. The extension part may have a first inlet hole in an end thereof. In the reciprocating compressor having this configuration, pulsation caused by a high-pressure refrigerant discharged periodically can be effectively reduced by varying at least one factor among the number of partition walls provided in the internal space of the discharge muffler, the distance between the partition walls, the length in the vertical direction of the partition walls, the position of the partition walls, and the length in the vertical direction of a flow path, or by adjusting the height, direction, and the like of the first inlet hole formed in the end of the extension part in various ways.

Description

reciprocating compressor

This specification relates to a reciprocating compressor, and more specifically, to a reciprocating compressor with an improved structure of a discharge section that discharges high-temperature and high-pressure refrigerant gas compressed in the compression section.

In general, a closed compressor is a compressor that is equipped with an electric part that generates power inside a sealed container and a compression part that operates by receiving the power of the electric part.

The sealed compressor can be classified into reciprocating type, rotary type, vane type, scroll type, etc. depending on the method of compressing the refrigerant, which is a compressible fluid.

In the reciprocating compressor, a crankshaft is coupled to the rotor of the electric drive unit, a connecting rod is coupled to the crankshaft, and the piston coupled to the connecting rod compresses the refrigerant while reciprocating in a straight line inside the cylinder. .

The reciprocating compressor includes a sealed container that forms a closed space, a motor unit that is provided in the sealed vessel and rotates, a compression unit that is installed on the upper side of the motor unit and compresses the refrigerant by receiving the rotational force of the motor unit, and sucks the refrigerant. It includes a suction unit that supplies the compression unit, and a discharge unit that discharges the refrigerant compressed in the compression unit.

And the discharge unit includes a discharge muffler installed on the discharge side where the high-temperature and high-pressure refrigerant gas compressed in the compression unit is discharged to reduce noise generated by pulsation when discharging the refrigerant gas, and a discharge hose connected to the discharge muffler. , which is fixed to a sealed container and includes a discharge pipe connected to a discharge hose.

Therefore, in order to effectively reduce pulsation caused by periodically discharged high-pressure refrigerant, various research and development efforts are being conducted on the discharge part.

The technical problem to be solved by this specification is to provide a reciprocating compressor that effectively reduces pulsation caused by periodically discharged high-pressure refrigerant.

Another technical problem to be solved by the present specification is to provide a reciprocating compressor including a discharge unit with a pulsation reduction member that can effectively reduce pulsation caused by periodically discharged high-pressure refrigerant.

The technical problems to be achieved in this specification are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. You will be able to.

A discharge unit provided in a reciprocating compressor according to an aspect of the present specification includes a discharge muffler including a muffler body and a muffler cover coupled to the muffler body to form an internal space; a discharge hose connecting a discharge pipe coupled to a sealed container with the discharge muffler; And it may include a pulsation reduction member located inside the discharge muffler.

The pulsation reduction member includes a first partition located on the inner surface of the bottom of the muffler cover and protruding toward the muffler body, and a second partition located on the inner surface of the bottom of the muffler body and protruding toward the muffler cover. can do.

By providing a first partition and a second partition in the internal space of the discharge muffler, pulsation caused by high-pressure refrigerant that is periodically discharged can be effectively reduced.

At least one factor among the number of partitions provided in the internal space of the discharge muffler, the spacing between partitions, the length of the partitions in the vertical direction, the location of the partitions, and the length of the flow path in the vertical direction can be appropriately changed as needed. there is.

The first partition wall and the second partition wall may be provided one each.

Alternatively, any one of the first partition wall and the second partition wall may be provided in plural numbers.

Alternatively, the first partition wall and the second partition wall may each be provided in equal numbers.

When the first partition wall and the second partition wall are provided one each, the first partition wall and the second partition wall are located adjacent to each other in the horizontal direction within the internal space of the discharge muffler, or are located adjacent to each other in the inner space of the first partition wall. They may be positioned to face each other within the interior space so that a flow path is formed between the ends and the ends of the second partition.

When the first partition wall and the second partition wall are located next to each other in the horizontal direction within the interior space, the vertical length of the flow path formed between the end of the first partition wall and the inner surface of the bottom of the muffler body The vertical length of the flow path formed between the end of the second partition wall and the inner surface of the bottom of the muffler cover may be equal to each other.

In contrast, when the first partition wall and the second partition wall are located next to each other in the horizontal direction within the interior space, the vertical direction of the flow path formed between the end of the first partition wall and the inner surface of the bottom of the muffler body The length of the flow path and the vertical length of the flow path formed between the end of the second partition and the inner surface of the bottom of the muffler cover may be formed to be different from each other.

At this time, the vertical length of the flow path formed between the end of the first partition and the inner surface of the bottom of the muffler body is the vertical direction of the flow path formed between the end of the second partition and the inner surface of the bottom of the muffler cover. It can be formed larger than the length of .

When any one of the first and second partition walls is provided in plurality, or when the first partition wall and the second partition wall are each provided in plurality with the same number, the first partition wall and the second partition wall are They may be located adjacent to each other in the horizontal direction within the internal space.

At this time, the plurality of partition walls among the first partition wall and the second partition wall may each be formed to have the same length in the vertical direction, or may be formed to have different lengths in the vertical direction.

And the vertical length of the flow path formed between the end of the first partition and the inner surface of the bottom of the muffler body is the vertical direction of the flow path formed between the end of the second partition and the inner surface of the bottom of the muffler cover. The length may be the same as the length of the passage, or it may be formed to be different from the vertical length of the flow path formed between the end of the second partition and the inner surface of the bottom of the muffler cover.

In addition, the spacing between the first and second partition walls that are adjacent to each other in the horizontal direction may be formed to be equal to each other, or may be formed to be different from each other.

When the first partition wall and the second partition wall are each provided in equal numbers, the plurality of first partition walls and the plurality of second partition walls are positioned between the end of the first partition wall and the end of the second partition wall. They may be positioned to face each other within the internal space to form a flow path.

At this time, the length in the vertical direction of the flow path formed between the first partition of any one of the plurality of first partitions and the second partition of any one of the plurality of second partitions is the length of the other of the plurality of first partitions. A length in the vertical direction of a flow path formed between one first partition wall and another second partition wall among the plurality of second partition walls is formed to be equal to each other, or a first partition wall of another one among the plurality of first partition walls. The vertical length of the flow path formed between the second partition wall and another one of the plurality of second partition walls may be formed to be different from each other.

Additionally, the plurality of first partition walls may be formed to have the same length in the vertical direction, and the plurality of second partition walls may be formed to have the same length in the vertical direction.

Alternatively, the plurality of first partition walls may be formed to have the same length in the vertical direction, and the plurality of second partition walls may be formed to have different lengths in the vertical direction.

Alternatively, the plurality of first partition walls may be formed to have different lengths in the vertical direction, and the plurality of second partition walls may be formed to have the same length in the vertical direction.

Alternatively, the plurality of first partition walls may be formed to have different lengths in the vertical direction, and the plurality of second partition walls may be formed to have different lengths in the vertical direction.

Additionally, the distance between the first partition walls that are adjacent to each other in the horizontal direction may be formed to be equal to the distance between the second partition walls that are adjacent to each other in the horizontal direction.

And when the first partition wall and the second partition wall are positioned to face each other, the ends of the first partition wall and the end part of the second partition wall forming the flow passage may be provided with a nozzle unit.

The pulsation reduction member may include an extension portion located in the internal space of the discharge muffler.

The extension may be a part of the discharge hose. Alternatively, the extension part may be manufactured separately from the discharge hose and connected to the discharge hose.

A first inlet hole may be formed at an end of the extension part.

An end of the extension portion where the first inlet hole is formed may be formed in a funnel shape.

The extension part may include at least one of a vertical extension part extending in a vertical direction, a horizontal extension part extending in a horizontal direction, and an inclined extension part extending in an oblique direction.

The extension portion may be provided with a plurality of second inlet holes.

A fixing part for fixing the extension part may be provided on the inner wall of the muffler body.

The pulsation reduction member may include all of the first and second partition walls and the extension portion located inside the discharge muffler.

According to the reciprocating compressor of the present specification, since a pulsation reduction member is provided in the inner space of the discharge muffler, pulsation caused by high-pressure refrigerant that is periodically discharged can be effectively reduced.

When the pulsation reduction member includes a partition, at least one factor may be changed among the number of partitions, the spacing between partitions, the length of the partitions in the vertical direction, the position of the partitions, and the length of the flow path in the vertical direction.

In addition, by changing at least one factor among the number of partitions, the spacing between partitions, the vertical length of the partitions, the position of the partitions, and the vertical length of the flow path, the high-pressure refrigerant is periodically discharged. Pulsation caused by can be effectively reduced.

When the pulsation reduction member includes an extension, the height, direction, etc. of the first inlet hole formed at the end of the extension can be adjusted in various ways in the internal space of the discharge muffler.

Additionally, by adjusting the height and direction of the first inlet hole formed at the end of the extension in various ways, pulsation caused by high-pressure refrigerant that is periodically discharged can be effectively reduced.

The effects that can be obtained in this specification are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. .

The accompanying drawings, which are included as part of the detailed description to aid understanding of the present specification, provide examples of the present specification and explain technical features of the present specification together with the detailed description.

1 is an external perspective view of a reciprocating compressor according to an embodiment of the present specification.

Figure 2 is an exploded perspective view of a reciprocating compressor according to an embodiment of the present specification.

Figure 3 is a cross-sectional view of a reciprocating compressor according to an embodiment of the present specification.

Figure 4 is a diagram showing a partial configuration of a reciprocating compressor according to an embodiment of the present specification.

Figure 5 is a front perspective view showing the connection of a muffler assembly with a pulsation reduction member and a discharge hose according to an embodiment of the present specification.

Figure 6 is a rear perspective view showing the connection of a muffler assembly with a pulsation reduction member and a discharge hose according to an embodiment of the present specification.

Figure 7 is a cross-sectional view showing a first example of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 8 is a cross-sectional view showing a second embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 9 is a cross-sectional view showing a third embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 10 is a cross-sectional view showing a fourth embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 11 is a cross-sectional view showing a fifth embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 12 is a cross-sectional view showing a sixth embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 13 is a cross-sectional view showing a seventh embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 14 is a cross-sectional view showing an eighth example of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 15 is a cross-sectional view showing a ninth embodiment of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 16 is a graph showing the pulsation reduction effect of a discharge muffler equipped with a pulsation reduction member according to an embodiment of the present specification.

Figure 17 is a front perspective view showing the connection of a muffler assembly with a pulsation reduction member and a discharge hose according to another embodiment of the present specification.

Figure 18 is a rear perspective view showing the connection of a muffler assembly with a pulsation reduction member and a discharge hose according to another embodiment of the present specification.

Figure 19 is a cross-sectional view showing the connection of a discharge muffler and a discharge hose equipped with a pulsation reduction member according to another embodiment of the present specification.

Figure 20 is a graph showing the pulsation reduction effect of a discharge muffler equipped with a pulsation reduction member according to another embodiment of the present specification.

FIG. 21 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the first modified embodiment of FIG. 19.

FIG. 22 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the second modified embodiment of FIG. 19.

FIG. 23 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the third modified embodiment of FIG. 19.

FIG. 24 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the fourth modified embodiment of FIG. 19.

FIG. 25 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the fifth modified embodiment of FIG. 19.

FIG. 26 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the sixth modified embodiment of FIG. 19.

FIG. 27 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the seventh modified embodiment of FIG. 19.

FIG. 28 is a cross-sectional view showing the connection of the discharge muffler and discharge hose according to the eighth modified embodiment of FIG. 19.

Figure 29 is a cross-sectional view showing a modified example of the discharge hose.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

The suffixes “assembly” and “part” for components used in the following description are given or used interchangeably only considering the ease of preparing the specification, and do not have distinct meanings or roles in themselves.

Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted.

In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of this specification are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be “coupled” or “assembled” to another component, it is understood that it may be directly connected to or assembled with the other component, but that other components may also exist in between. It should be.

On the other hand, when a component is referred to as being “directly coupled” or “directly assembled” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments according to the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of the reference numerals, and duplicate descriptions thereof will be omitted.

Hereinafter, the reciprocating compressor according to the present specification will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a reciprocating compressor according to an embodiment of the present specification, FIG. 2 is an exploded perspective view of a reciprocating compressor according to an embodiment of the present specification, and FIG. 3 is a cross-sectional view of a reciprocating compressor according to an embodiment of the present specification. am.

Referring to FIGS. 1 to 3, the reciprocating compressor 10 according to an embodiment of the present specification includes a sealed container 100 forming the exterior, an electric motor provided in the internal space of the sealed container 100 and providing driving force. The compression unit 300 receives the driving force from the eastern unit 200 and the electric drive unit 200 and compresses the refrigerant through a linear reciprocating motion, and the refrigerant for compressing the refrigerant in the compression unit 300 is sucked in and the compression unit ( It includes a suction/discharge unit 400 that discharges the compressed refrigerant from 300).

The sealed container 100 forms a sealed space inside, and various parts of the compressor 10 are accommodated in this sealed space. The sealed container 100 is made of a metal material and includes a lower sealed container 110 and an upper sealed container 160.

The lower sealed container 110 has a roughly hemispherical shape and includes various parts forming the electric unit 200, compressed unit 300, discharge unit 400, and compressor 10 together with the upper sealed container 160. Create a space to accommodate.

The lower sealed container 110 may be referred to as a “compressor body” and the upper sealed container 160 may be referred to as a “compressor cover.”

The lower sealed container 110 is provided with a suction pipe 120, a discharge pipe 130, a process pipe 140, and a power supply unit (not shown).

The suction pipe 120 introduces refrigerant into the sealed container 100 and is mounted through the lower sealed container 110.

The suction pipe 120 may be separately mounted on the lower sealed container 110 or may be formed integrally with the lower sealed container 110.

The discharge pipe 130 discharges the refrigerant compressed in the sealed container 100 and is installed through the lower sealed container 110.

The discharge pipe 130 may also be separately mounted on the lower sealed container 110 or may be formed integrally with the lower sealed container 110.

The discharge hose 800 of the suction/discharge unit 400, which will be described later, is connected to the discharge pipe 130. The refrigerant that flows into the suction pipe 120 and is compressed through the compression unit 300 may be discharged to the discharge pipe 130 through the discharge hose 800 of the intake and discharge unit 400.

The process pipe 140 is a device provided to charge refrigerant into the sealed container 100 after sealing the inside of the sealed container 100, and includes the suction pipe 120 and the discharge pipe 130 Together, they can be mounted through the lower sealed container 110.

The upper sealed container 160 forms a receiving space together with the lower sealed container 110, and is formed in a substantially hemispherical shape like the lower sealed container 110. The upper sealed container 160 packages the lower sealed container 110 on the upper side of the lower sealed container 110, forming a sealed space therein.

The transmission unit 200 includes

stators

210 and 220, an insulator 230, a rotor 240, and a rotating shaft 250.

The

stators

210 and 220 are fixed parts during driving of the electric motor 200 and include a stator core 210 and a stator coil 220.

The stator core 210 is made of a metal material and may have an approximately cylindrical shape with an internal hollow.

And, the stator coil 220 is mounted inside the stator core 210. When power is applied from the outside, the stator coil 220 generates electromagnetic force and performs electromagnetic interaction with the stator core 220 and the rotor 240. Through this, the transmission unit 200 can generate a driving force for the reciprocating movement of the compression unit 300.

The insulator 230 is disposed between the stator core 210 and the stator coil 220 and prevents direct contact between the stator core 210 and the stator coil 220.

If the stator coil 220 is in direct contact with the stator core 210, the generation of electromagnetic force from the stator coil 220 may be interrupted, and this is to prevent this.

The insulator 230 may space the stator core 210 and the stator coil 220 apart from each other by a predetermined distance.

The rotor 240 is rotatably provided inside the stator coil 220 and may be installed within the insulator 230. The rotor 240 is provided with a magnet.

When power is supplied from the outside, the rotor 240 rotates through electromagnetic interaction with the stator core 210 and the stator coil 220.

The rotational force resulting from the rotation of the rotor 240 acts as a driving force that can drive the compression unit 200.

The rotation shaft 250 is installed within the rotor 240, is mounted to penetrate the rotor 240 along the vertical direction, and can rotate together with the rotor 240. In addition, the rotation shaft 250 is connected to a connecting rod 340, which will be described later, and transmits the rotational force generated by the rotor 240 to the compression unit 300.

To explain this, the rotating shaft 250 includes a base shaft 252, a rotating plate 254, and an eccentric shaft 256.

The base shaft 252 is mounted in the rotor 240 in the vertical direction (Z-axis direction) or vertical direction. When the rotor 240 rotates, the base shaft 252 may rotate together with the rotor 240.

The rotation plate 254 is installed on one side of the base shaft 252 and can be rotatably mounted on the rotation plate seating portion 320 of the cylinder block 310.

The eccentric shaft 256 protrudes upward from the upper surface of the rotating plate 254.

Specifically, the eccentric shaft 256 protrudes at a position eccentric from the axial center of the base shaft 252 and rotates eccentrically when the rotation plate 254 rotates.

A connecting rod 340 is mounted on the eccentric shaft 256. According to the eccentric rotation of the eccentric shaft 256, the connecting rod 340 reciprocates linearly in the front-back direction (X-axis direction).

The compression unit 300 includes a cylinder block 310, a connecting rod 340, a piston 350, and a piston pin 370.

The cylinder block 310 is provided on the upper side of the electric drive unit 200, more specifically, the rotor 240, and is mounted inside the sealed container 100. The cylinder block 310 includes a rotating plate seating portion 320 and a cylinder 330.

The rotation plate seating portion 320 is formed at the lower part of the cylinder block 310 and rotatably accommodates the rotation plate 254. A shaft opening 322 through which the rotating shaft 250 can pass is formed in the rotating plate seating portion 320.

The cylinder 330 is provided in the front part of the cylinder block 310 and is arranged to accommodate a piston 350, which will be described later. The piston 350 can reciprocate in the front-back direction (X-axis direction), and a compression space C that can compress the refrigerant is formed inside the cylinder 330.

The cylinder 330 may be made of aluminum. For example, the cylinder 330 may be made of aluminum or aluminum alloy.

Due to the non-magnetic aluminum material, the magnetic flux generated by the rotor 240 is not transmitted to the cylinder 330. Accordingly, the magnetic flux generated in the rotor 240 can be prevented from being transmitted to the cylinder 330 and leaking to the outside of the cylinder 330.

The connecting rod 340 is a device for transmitting the driving force provided from the transmission unit 200 to the piston 350, and converts the rotational motion of the rotary shaft 250 into a linear reciprocating motion.

The connecting rod 340 reciprocates linearly in the front-back direction (X-axis direction) when the rotary shaft 250 rotates. The connecting rod 340 may be made of a sintered alloy material.

The piston 350 is a device for compressing refrigerant, and is accommodated within the cylinder 330 to be capable of reciprocating movement in the front-back direction (X-axis direction). The piston 350 is connected to the connecting rod 340. The piston 350 reciprocates linearly within the cylinder 330 according to the movement of the connecting rod 340. According to the reciprocating motion of the piston 350, the refrigerant introduced from the suction pipe 120 may be compressed within the cylinder 330.

The piston 350, like the cylinder 330, may be made of an aluminum material, for example, aluminum or an aluminum alloy.

Accordingly, the magnetic flux generated in the rotor 240 can be prevented from leaking to the outside through the piston 350.

In addition, the piston 350 is made of the same material as the cylinder 330 and may have a thermal expansion coefficient substantially the same as that of the cylinder 330.

As it has almost the same coefficient of thermal expansion, when the compressor 10 is driven, in the internal environment of the sealed container 100 at a high temperature (generally, approximately 100° C.), the piston 350 expands by almost the same amount as the cylinder 330. It is thermally deformed. Therefore, when the piston 350 reciprocates within the cylinder 330, interference between the piston 350 and the cylinder 330 can be prevented.

The piston pin 370 couples the piston 350 and the connecting rod 340. In detail, the piston pin 370 penetrates the piston 350 and the connecting rod 340 in the vertical direction (Z-axis direction) to connect the piston 350 and the connecting rod 340.

The intake/discharge unit 400 includes a muffler assembly 410, a valve assembly 480, a discharge hose 800, a plurality of

gaskets

485, 488, an elastic member 490, and a clamp 492. .

The muffler assembly 410 delivers the refrigerant sucked from the suction pipe 120 to the inside of the cylinder 330, and delivers the refrigerant compressed in the compression space C of the cylinder 330 to the discharge pipe 130. .

To this end, the muffler assembly 410 includes a suction space (S) that accommodates the refrigerant sucked from the suction pipe 120 and a discharge space (D) that accommodates the refrigerant compressed in the compression space (C) of the cylinder 330. This is prepared.

The refrigerant sucked from the suction pipe 120 flows into the suction space S of the suction and discharge tank 426 through

suction mufflers

430 and 420, which will be described later. In addition, the refrigerant compressed in the cylinder 330 passes through the discharge space D of the suction and discharge tank 426 through the

discharge mufflers

425 and 438, and is discharged from the compressor 10 through the discharge hose 800. It is discharged to the outside.

The valve assembly 480 guides the refrigerant in the suction space (S) into the cylinder 330 or guides the refrigerant compressed in the cylinder 330 to the discharge space (D).

For this purpose, a discharge valve 483 is provided on the front of the valve assembly 480 to be openable and closed to discharge the compressed refrigerant from the compression space C to the discharge space D, and the valve assembly 480 At the rear, an intake valve 481 is provided that can be opened and closed to export the refrigerant from the intake space (S) to the compression space (C) of the cylinder (330).

That is, a discharge valve 483 is provided on the front of the valve assembly 480, and an intake valve 481 is provided on the rear of the valve assembly 420.

The operation of the discharge valve 483 and the suction valve 481 will be briefly explained.

When the compressed refrigerant is discharged from the compression space C within the cylinder 330, the discharge valve 483 is opened and the intake valve 481 is closed. Accordingly, the refrigerant compressed within the cylinder 330 may flow into the discharge space (D) rather than into the suction space (S).

Conversely, when the refrigerant flowing into the suction space S is sucked into the cylinder 330, the discharge valve 483 is closed and the suction valve 481 is opened. Accordingly, the refrigerant in the suction space (S) may flow into the cylinder 330 without flowing into the discharge space (D).

The discharge hose 800 is a device that delivers compressed refrigerant contained in the discharge space D to the discharge pipe 130, and is coupled to the muffler assembly 410. One side of the discharge hose 800 is coupled to the muffler assembly 410 to communicate with the discharge space D, and the other side of the discharge hose 800 is coupled to the discharge pipe 130.

The plurality of

gaskets

485 and 488 are devices for preventing refrigerant leakage, and are mounted on one side and the other side of the valve assembly 420, respectively.

In detail, the plurality of

gaskets

485 and 488 include a first gasket 485 and a second gasket 488. The first gasket 485 is mounted on the front of the valve assembly 480, and the second gasket 488 is mounted on the rear of the valve assembly 420.

The elastic member 490 is used to support the muffler assembly 410 when the compressor 10 is driven, and is mounted on the front of the muffler assembly 410. The elastic member 490 may include a Belleville Spring.

The clamp 492 secures the valve assembly 480, the first gasket 485, the second gasket 488, and the elastic member 490 to the muffler assembly 410. The clamp 492 has an approximate tripod shape and can be mounted on the muffler assembly 410 through a fastening means such as a screw member.

In addition, the compressor 10 further includes a plurality of

damper members

500, 550, 600, and 650 and a balance weight 700.

The plurality of

damper members

500, 550, 600, and 650 cushion vibrations of internal structures generated when the compressor 10 is driven. The plurality of

damper members

500, 550, 600, and 650 include a front damper 500, a rear damper 550, and a

lower damper

600, 650.

The front damper 500 cushions the vibration of the suction/discharge unit 400 and may be made of a rubber material. The front damper 500 may be coupled to the front upper portion of the cylinder block 310 through a fastening means coupled to the clamp 492.

The rear damper 550 cushions the vibration of the compression unit 300 and is mounted on the rear upper part of the cylinder block 310. The rear damper 550 may be made of rubber material.

The

lower dampers

600 and 650 cushion the vibration of the electric drive unit 200 and are provided in plural pieces. The plurality of

lower dampers

600 and 650 include a front lower damper 600 and a rear lower damper 650.

The front lower damper 600 cushions vibration on the front side of the transmission unit 200 and is mounted on the front lower side of the stator core 210. The rear lower damper 650 cushions vibration on the rear side of the transmission unit 200 and is mounted on the rear lower side of the stator core 210.

The balance weight 700 is a device for controlling rotational vibration when the rotation shaft 250 of the electric drive unit 200 rotates, and is coupled to the eccentric shaft 256 of the rotation shaft 250 on the upper side of the connecting rod 340. do.

Below, a pulsation reduction member according to an embodiment of the present specification will be described in detail.

FIG. 4 is a diagram showing a partial configuration of a reciprocating compressor according to an embodiment of the present specification, and FIG. 5 is a front perspective view showing the connection of a muffler assembly and discharge hose with a pulsation reduction member according to an embodiment of the present specification. .

Figure 6 is a rear perspective view showing the connection of the muffler assembly and discharge hose with a pulsation reduction member according to an embodiment of the present specification, and Figure 7 is a rear perspective view of the discharge muffler with a pulsation reduction member according to an embodiment of the present specification. This is a cross-sectional view showing the first embodiment.

Before explaining specific embodiments of the present specification, briefly describe the features provided by the reciprocating compressor of the present specification. The discharge unit provided in the reciprocating compressor of the present specification includes a pulsation reduction member located inside the discharge muffler. It may be possible, and the pulsation reduction member may include a first partition located on the inner surface of the bottom of the muffler cover and protruding toward the muffler body, and a second partition located on the inner surface of the bottom of the muffler body and protruding toward the muffler cover. You can.

The first partition wall and the second partition wall are each provided one at a time, either one of the first partition wall and the second partition wall is provided in plural numbers, or each of the first partition wall and the second partition wall is provided in plural numbers, the same number as each other. It can be provided with .

Therefore, by changing at least one factor among the number of partitions provided in the internal space of the discharge muffler, the spacing between partitions, the length of the partitions in the vertical direction, the position of the partitions, and the length of the flow path in the vertical direction. , it can effectively reduce pulsation caused by high-pressure refrigerant that is periodically discharged.

Discharge mufflers of various structures provided in the reciprocating compressor of this specification will be described.

4 to 7, the muffler assembly 410 according to an embodiment of the present specification includes a first assembly unit 430, a second assembly unit 420, a third assembly unit 425, and a fourth assembly unit. Part 438 is included.

The first assembly part 430 includes a suction hole 432 that communicates with the suction pipe 120. The suction hole 432 is located adjacent to the inside of a point of the lower sealed container 110 where the suction pipe 120 is coupled. An internal pipe 450 is installed inside the first assembly unit 430. For example, the internal pipe 450 may be composed of a pipe having a substantially cylindrical shape.

Inside the first assembly part 430, a first fixing part 441 for fixing the internal pipe 450 is installed. A through hole 442 corresponding to the suction hole 432 is formed in the first fixing part 441. Accordingly, when the first fixing part 441 is installed inside the first assembly part 430, the suction hole 432 and the through hole 442 may be aligned with each other.

And, the inner pipe 450 includes a first coupling part 454 coupled to the first fixing part 441.

The internal pipe 450 may extend upward from the first assembly part 430 and be coupled to the second assembly part 420. The second assembly part 420 includes a second fixing part coupled to the internal pipe 450. Additionally, the inner pipe 455 includes a second coupling portion 455 coupled to the second fixing portion.

The second assembly part 420 is coupled to the upper side of the first assembly part 430. At least a portion of the inner pipe 450 may be located inside the first assembly portion 430, and the remaining portion may be located inside the second assembly portion 420.

When the first assembly part 430 and the second assembly part 420 are combined, the refrigerant sucked into the compressor 10 is inside the first and

second assembly parts

430 and 420, and the cylinder 330 A suction flow path that can flow toward is formed. Accordingly, the first and

second assembly parts

430 and 420 can be collectively referred to as a “suction muffler.”

The third assembly part 425 is arranged to be spaced apart from one side of the second assembly part 420. And, between the second assembly part 420 and the third assembly part 425, a suction/discharge tank 426 forming the suction space (S) and the discharge space (D) is installed.

The suction and discharge tank 426 includes a partition portion 427 that divides the internal space of the suction and discharge tank 426 into the suction space (S) and the discharge space (D). Additionally, the valve assembly 480 may be installed on one side of the suction/discharge tank 426.

The suction space (S) may be shielded by the suction valve 481, and the discharge space (D) may be shielded by the discharge valve 483.

The third assembly portion 425 is provided with a gas inlet 425A communicating with the discharge space D of the suction/discharge tank 426.

The fourth assembly part 438 is coupled to the lower side of the third assembly part 425. When the third assembly part 425 and the fourth assembly part 438 are combined, the refrigerant discharged from the cylinder 330 is inside the third and

fourth assembly parts

425 and 438 through the discharge pipe. A discharge passage flowing toward (130) is formed.

And the fourth assembly portion 438 is provided with a gas discharge port 438A to which the discharge hose 800 is coupled.

Accordingly, the third and

fourth assembly parts

425 and 438 can be collectively referred to as a “discharge muffler.”

Here, the third assembly part 425 can be said to be the “muffler body” of the discharge muffler, and the fourth assembly part 438 can be said to be the “muffler cover” of the discharge muffler.

A plurality of partition walls W1 and W2 constituting the pulsation reduction member of this embodiment are located in the internal space of the discharge muffler.

The plurality of partition walls (W1, W2) includes a first partition (W1) located on the inner surface of the bottom of the fourth assembly part 438 and protruding toward the third assembly part 425, and a third assembly part 425. It is located on the inner surface of the bottom and includes a second partition W2 protruding toward the fourth assembly part 438.

The first partition W1 and the second partition W2 are located adjacent to each other in the horizontal direction (Y-axis direction) within the internal space of the discharge muffler, and the first partition W1 and the third assembly part ( The gap between the right inner wall of the 425), the gap between the first partition W1 and the second partition W2, the gap between the second partition W2 and the left inner wall of the third assembly part 425, etc. are appropriately determined. can be designed.

An end of the second partition W2 is spaced apart from the inner surface of the bottom of the fourth assembly portion 438. Accordingly, the first flow path OP1 is formed between the end of the second partition W2 and the inner surface of the bottom of the fourth assembly portion 438.

And the end of the first partition W1 is spaced apart from the inner surface of the bottom of the third assembly part 425. Accordingly, the second flow path OP2 is formed between the end of the first partition W1 and the inner surface of the bottom of the third assembly portion 425.

The vertical length OPL1 of the first flow path OP1 and the vertical length OPL2 of the second flow path OP2 may be formed to be the same, but may be formed differently.

When the vertical length OPL1 of the first flow path OP1 and the vertical length OPL2 of the second flow path OP2 are formed differently from each other, as shown in FIG. 7, the second flow path ( The second length (OPL2) of OP2) may be formed to be larger than the first length (OPL1) of the first flow path (OP1).

However, it is also possible that the first length OPL1 of the first flow path OP1 is formed to be larger than the second length OPL2 of the second flow path OP2.

The second length OPL2 of the second flow path OP2 can be adjusted by changing the vertical length WL1 of the first partition W1, and the first length OPL1 of the first flow path OP1 can be adjusted by changing the vertical length WL2 of the second partition W2.

When two partition walls (W1, W2) are located inside the discharge muffler, three attenuation spaces (M1, M2, M3) are formed in the internal space of the discharge muffler.

And the three attenuation spaces (M1, M2, M3) communicate with each other through the first flow path (OP1) and the second flow path (OP2).

The first partition W1 may be formed integrally with the fourth assembly part 438 through injection, and the second partition W2 may be formed integrally with the third assembly part 425 through injection. It can be formed as

And the three attenuation spaces (M1, M2, M3) include a third attenuation space (M3) located last along the flow direction of the discharged gas, a first attenuation space (M1) spaced apart from the third attenuation space, and It includes a second attenuation space (M2) located between the first attenuation space (M1) and the third attenuation space.

The discharge hose 800 coupled to the discharge muffler is connected to the gas discharge port 438A formed in the third attenuation space M3, which is located last along the flow direction of the discharge gas among the three attenuation spaces M1, M2, and M3. can be combined

The discharge hose 800 delivers refrigerant (or discharge gas) in the discharge muffler to the discharge pipe 130.

The discharge hose 800 extends somewhat long from the fourth assembly portion 438 toward the discharge pipe 130, and is curved or bent at least once in order to be placed in the limited internal space of the sealed container 100. It can be configured as follows.

The discharge hose 800 is preferably made of a flexible material, but this is not essential.

A portion of the discharge hose 800 may be supported by the hose fixing part 553. The hose fixing part 553 is coupled to the rear damper 550 and is configured to clamp the discharge hose 800.

As an example, the hose fixing part 553 has a pincer shape and may be arranged to surround at least a portion of the outer peripheral surface of the discharge hose 800. By the hose fixing part 553, the discharge hose 800 can be guided to be positioned away from the inner surface of the sealed container 100.

The discharge pipe 130 penetrates the lower sealed container 110 and extends into the interior of the lower sealed container 110, and the discharge hose 800 is connected to the discharge pipe 130.

In order to facilitate connection between the discharge pipe 130 and the discharge hose 800, the discharge pipe 130 may be bent through the lower sealed container 110 and extend upward.

The discharge hose 800 may be made of a flexible rubber material, and the discharge pipe 130 may be made of a metal material, for example, copper (Cu).

Hereinafter, a discharge muffler according to another embodiment of the present specification will be described.

In describing the following embodiments, the same reference numerals are assigned to the same components as those of the above-described embodiments, and detailed descriptions thereof are omitted.

In the discharge muffler of this embodiment, the first partition W1 and the second partition W2 are, unlike the first embodiment of FIG. 7 described above, the end of the first partition W1 and the second partition wall (W1). They are positioned facing each other so that a third flow path OP3 is formed between the ends of W2).

In this embodiment, the vertical length WL1 of the first partition W1 and the vertical length WL2 of the second partition W2 are changed to change the vertical length WL2 of the third flow path OP3. The length (OPL3) can be adjusted.

And nozzle parts W11 and W21 are formed at the ends of the first partition W1 and the second partition W2, respectively.

According to the nozzle units W11 and W21, the cross-sectional area of the third flow path OP3 decreases toward the right in FIG. 8.

In the discharge muffler of this embodiment, two first partition walls (W1) are provided, and only one second partition wall (W2) is provided.

However, this embodiment includes only one first partition W1 and two second partition walls W2.

Additionally, either one of the first partition W1 and the second partition W2 may be provided in three or more units.

The two first partitions W1 are positioned to be spaced apart from each other in the horizontal direction (Y-axis direction), and the second partition W2 is located in the space between the two first partitions W1.

Accordingly, the two first partition walls (W1) and one second partition wall (W2) are located adjacent to each other in the horizontal direction (Y-axis direction) within the internal space of the discharge muffler, and the first partition wall (W1) on the left and The gap between the left inner wall of the third assembly unit 425, the gap between the first partition W1 and the second partition W2 on the left, and the gap between the second partition W2 and the first partition W1 on the right. The spacing, the spacing between the first partition W1 on the right side and the right inner wall of the third assembly portion 425, etc. may be designed appropriately.

The end of the first partition W1 on the left side is spaced apart from the inner surface of the bottom of the third assembly part 425. Accordingly, a fourth flow path OP4 is formed between the end of the first partition W1 on the left and the inner surface of the bottom of the third assembly portion 425.

And the end of the second partition W2 is spaced apart from the inner surface of the bottom of the fourth assembly portion 438. Accordingly, a fifth flow path OP5 is formed between the end of the second partition W2 and the inner surface of the bottom of the fourth assembly portion 438.

And the end of the first partition W1 on the right side is spaced apart from the inner surface of the bottom of the third assembly part 425. Accordingly, a sixth flow path OP6 is formed between the end of the first partition W1 on the right side and the inner surface of the bottom of the third assembly portion 425.

The vertical length OPL4 of the fourth flow path OP4, the vertical length OPL5 of the fifth flow path OP5, and the vertical length of the sixth flow path OP6 are the vertical lengths of the corresponding partition walls. It can be adjusted by changing .

Additionally, the two first partitions W1 may be formed to have the same length in the vertical direction as shown in FIG. 9, but may also be formed to have different lengths in the vertical direction.

In this embodiment, two first partitions W1 are provided, and only one second partition W2 is provided.

The two first partitions (W1) are located spaced apart from each other in the horizontal direction (Y-axis direction), and a second partition ( W2) is located.

Accordingly, the two first partition walls W1 are located adjacent to each other in the horizontal direction (Y-axis direction) within the internal space of the discharge muffler.

The gap between the first partition W1 on the left and the left inner wall of the third assembly unit 425, the gap between the first partition W1 on the left and the first partition W1 on the right, the first partition on the right ( The gap between W1) and the right inner wall of the third assembly portion 425 can be appropriately designed.

The end of the first partition W1 on the left side is spaced apart from the inner surface of the bottom of the third assembly part 425. Accordingly, a seventh flow path OP7 is formed between the end of the first partition W1 on the left and the inner surface of the bottom of the third assembly portion 425.

And the first partition W1 and the second partition W2 on the right side are formed such that an eighth flow path OP8 is formed between the end of the first partition W1 on the right side and the end of the second partition W2. are located opposite each other.

However, the second partition wall W2 may be located at a position opposite to the first partition wall W1 located on the left of the two first partition walls W1.

In this embodiment, the vertical length OPL7 of the seventh passage OP7 can be adjusted by changing the vertical length of the left first partition W1, and the right first partition W1 ) The vertical length OPL8 of the eighth flow path OP8 can be adjusted by changing the vertical length of the second partition W2.

And, as shown in FIG. 10, the two first partition walls W1 may be formed to have different lengths in the vertical direction, but may also be formed to have the same length in the vertical direction.

And the ends of the first partition W1 and the ends of the second partition W2 facing each other may be provided with nozzle parts.

In this embodiment, two first partition walls (W1) and two second partition walls (W2) are each provided.

However, the first partition W1 and the second partition W2 may be provided in the same number as each other.

The two first partition walls (W1) are located spaced apart from each other in the horizontal direction (Y-axis direction), one second partition wall (W2) is located in the space between the two first partition walls (W1), and two first partition walls (W2) are located in the space between the two first partition walls (W1). Among the partition walls W1, the remaining second partition wall W2 is located between the first partition wall W1 on the right side and the right inner wall of the third assembly part 425.

Accordingly, the two first partitions W1 and the two second partitions W2 are alternately positioned next to each other in the horizontal direction (Y-axis direction) within the internal space of the discharge muffler.

The gap between the first partition W1 on the left and the left inner wall of the third assembly part 425, the gap between the first partition W1 on the left and the second partition W2 on the left, the second partition on the left ( The gap between W2) and the first partition W1 on the right, the gap between the first partition W1 on the right and the second partition W2 on the right, the second partition W2 on the right and the third assembly part ( 425), the gap between the right inner walls, etc. can be designed appropriately.

The end of the first partition W1 on the left side is spaced apart from the inner surface of the bottom of the third assembly part 425. Accordingly, a ninth flow path OP9 is formed between the end of the first partition W1 on the left and the inner surface of the bottom of the third assembly portion 425.

And the end of the second partition W2 on the left side is spaced apart from the inner surface of the bottom of the fourth assembly part 438. Accordingly, a tenth flow path OP10 is formed between the end of the second partition W2 on the left and the inner surface of the bottom of the fourth assembly portion 438.

And the end of the first partition W1 on the right side is spaced apart from the inner surface of the bottom of the third assembly part 425. Accordingly, an 11th flow path OP11 is formed between the end of the first partition W1 on the right side and the inner surface of the bottom of the third assembly part 425.

And the end of the second partition W2 on the right side is spaced apart from the inner surface of the bottom of the fourth assembly part 438. Accordingly, a twelfth flow path OP12 is formed between the end of the second partition W2 on the right side and the inner surface of the bottom of the fourth assembly portion 438.

In this embodiment, the vertical length OPL9 of the ninth passage OP9 can be adjusted by changing the vertical length of the left first partition W1, and the left second partition W2 ) The vertical length (OPL10) of the tenth flow path (OP10) can be adjusted by changing the vertical length of the .

Additionally, the vertical length OPL11 of the 11th flow path OP11 can be adjusted by changing the vertical length of the first partition W1 on the right, and the vertical length OPL11 of the second partition W2 on the right can be adjusted. By changing the length, the vertical length OPL12 of the twelfth flow path OP12 can be adjusted.

As shown in FIG. 11, the two first partition walls W1 may have the same length in the vertical direction, but may also have different lengths in the vertical direction.

The two first partitions W1 are positioned to be spaced apart from each other in the horizontal direction (Y-axis direction), and the two second partitions W2 are positioned opposite to the two first partitions W1.

The first partition W1 on the left and the second partition W2 on the left are positioned facing each other to form the thirteenth flow path OP13, and the first partition W1 on the right and the second partition W2 on the right are They are located opposite each other to form the 14th flow path (OP14).

In this embodiment, by changing the vertical length of the first partition W1 on the left and the vertical length of the second partition W2 on the left, the vertical length of the 13th flow path OP13 ( OPL13) can be adjusted, and the vertical length of the fourteenth flow path OP14 can be adjusted by changing the vertical length of the first partition W1 on the right and the vertical length of the second partition W2 on the right. (OPL14) can be adjusted.

And, the ends of the first partition W1 and the ends of the second partition W2 facing each other may be provided with nozzle parts.

As shown in FIG. 12, the two first partitions W1 may be formed to have the same length in the vertical direction, and the two second partitions W2 may be formed to have the same length in the vertical direction. there is.

However, as shown in FIG. 13, the two first partitions W1 may be formed to have the same length in the vertical direction, but the two second partitions W2 may be formed to have different lengths in the vertical direction. It may be possible.

According to this configuration, the vertical length OPL15 of the 15th flow path OP15 formed between the first partition W1 on the left and the second partition W2 on the left, and the first partition W1 on the right The vertical length OPL16 of the 16th flow path OP16 formed between and the second partition wall W2 on the right side may be formed differently.

And as shown in FIG. 14, the two second partitions W2 may be formed to have the same length in the vertical direction, but the two first partitions W1 may be formed to have the same length in the vertical direction. You can.

According to this configuration, the vertical length OPL17 of the 17th flow path OP17 formed between the first partition W1 on the left and the second partition W2 on the left, and the first partition W1 on the right The vertical length OPL18 of the 18th flow path OP18 formed between and the second partition wall W2 on the right side may be formed differently.

And, as shown in FIG. 15, the two first partitions W1 may be formed to have different lengths in the vertical direction, and the two second partitions W2 may be formed to have different lengths in the vertical direction. there is.

According to this configuration, the vertical length OPL19 of the 19th flow path OP19 formed between the first partition W1 on the left and the second partition W2 on the left, and the first partition W1 on the right The vertical length OPL20 of the 20th flow path OP20 formed between and the second partition wall W2 on the right side may be formed differently.

However, the vertical length OPL19 of the 19th flow path OP19 formed between the first partition W1 on the left and the second partition W2 on the left, and the The vertical length OPL20 of the 20th flow path OP20 formed between the second partitions W2 may be formed to be equal to each other.

13 to 15, the length in the vertical direction of the flow path formed by the first and second partitions W1 and W2 facing each other can be adjusted by changing the length in the vertical direction of the partition. The plurality of flow paths may be at least partially aligned with each other in the horizontal direction as shown in FIGS. 12 to 14, but may not be aligned with each other in the horizontal direction as shown in FIG. 15.

Referring to FIG. 16, it can be seen that the pulsation reduction effect is excellent in the discharge muffler according to the embodiment of the present specification compared to the conventional case in which a partition is not provided in the internal space of the discharge muffler.

And since the discharge gas after passing through all of the plurality of attenuation spaces flows into the discharge hose 800, noise generated during operation of the compressor can be effectively attenuated.

Below, a pulsation reduction member according to another embodiment of the present specification will be described in detail.

And Figure 18 is a rear perspective view showing the connection of the muffler assembly and discharge hose with a pulsation reduction member according to another embodiment of the present specification, and Figure 19 is a discharge with a pulsation reduction member according to another embodiment of the present specification. This is a cross-sectional view showing the connection between the muffler and discharge hose.

Before explaining this embodiment in detail, briefly explaining the features provided by the reciprocating compressor of this embodiment, the pulsation reduction member provided in the discharge part of the reciprocating compressor of this embodiment is located in the internal space of the discharge muffler. It may include an extension part.

A first inlet hole may be formed at an end of the extension portion.

Since the reciprocating compressor of this configuration has an extension located inside the discharge muffler, the height, direction, etc. of the first inlet hole formed at the end of the extension in the internal space of the discharge muffler are adjusted in various ways, Pulsations caused by periodically discharged high-pressure refrigerant can be effectively reduced.

Discharge hoses of various structures provided in the reciprocating compressor of this specification will be described.

The discharge hose 800 coupled to the discharge muffler is coupled to the gas discharge port 438A and transfers the refrigerant (or discharge gas) within the discharge muffler to the discharge pipe 130.

In this embodiment, the discharge hose 800 extends into the internal space of the

discharge mufflers

425 and 438 and has an extension portion with a first inlet hole H1 formed at the end, and the extension portion extends in the vertical direction (Z-axis direction). It is provided with a vertical extension portion (800A) extending to.

The vertical length L1 of the vertical extension portion 800A may be 0.1 to 0.9 times the vertical length L2 of the internal space of the

discharge mufflers

425 and 438.

In addition, a fixing part 425B for fixing the vertical extension part 800A may be provided on the inner wall of the third assembly part 425 of the discharge muffler.

According to the fixing part 425B, the vertical extension part 800A of the discharge hose 800 can be reliably fixed.

In this configuration, a partition wall may be located in the internal space of the

discharge mufflers

425 and 438 to divide the internal space into a plurality of attenuation spaces.

That is, the first and second partition walls of the above-described embodiment may be further formed in the internal space of the

discharge mufflers

425 and 438.

Although FIG. 19 shows that the inner diameter of the extension portion 800A is the same as the inner diameter of the other portion of the discharge hose 800, the end of the extension portion 800A where the first inlet hole H1 is formed is shown in FIG. 29. As shown, it may be formed in a funnel shape.

When the end of the extension portion 800A is formed in a funnel shape, the inner diameter of the first inlet hole H1 changes as shown in FIG. 29. Therefore, the discharge gas can smoothly flow into the discharge hose 800.

Referring to FIG. 20, it can be seen that the connection structure of the discharge muffler and the discharge hose according to the above-described embodiment of FIG. 19 can improve pulsation compared to the prior art in which the discharge hose does not have an extension part.

Hereinafter, various modified embodiments of the discharge hose will be described. In describing the following modified embodiments, the same reference numerals are assigned to the same components as those of the above-described embodiment of FIG. 19, and detailed descriptions thereof are omitted.

The vertical extension portion 800A provided in the discharge hose of this embodiment is provided with a plurality of second inlet holes H2.

The second inlet hole H2 may be formed in a horizontal direction as shown in FIG. 21, but may also be formed in an inclined direction.

And in Figure 21, the diameter of the second inlet hole (H2) is shown to be smaller than the inner diameter of the first inlet hole (H2), but the diameter of the second inlet hole (H2) is smaller than that of the first inlet hole (H1). It can be formed to have the same size as the inner diameter.

Additionally, the plurality of second inlet holes H2 may be formed with different diameters.

In addition, the first and second partition walls of the above-described embodiment may be located inside the discharge muffler, and the end of the vertical extension portion 800A may be formed in a funnel shape.

Unlike the embodiment of FIG. 19 described above, the discharge hose of this embodiment further includes a horizontal extension portion 800B extending in the horizontal direction (X-axis direction) from an end of the vertical extension portion 800A.

In addition, the first and second partition walls of the above-described embodiment may be located inside the discharge muffler, and the end of the horizontal extension portion 800B may be formed in a funnel shape.

In the discharge hose of this embodiment, a plurality of second inlet holes H2 are formed in the vertical extension portion 800A. However, a plurality of second inlet holes H2 may also be formed in the horizontal extension portion 800B.

The second inlet hole H2 may be formed in a horizontal direction as shown in FIG. 23, but may also be formed in an inclined direction.

And in Figure 23, the diameter of the second inlet hole (H2) is shown to be smaller than the inner diameter of the first inlet hole (H2), but the diameter of the second inlet hole (H2) is smaller than that of the first inlet hole (H1). It can be formed to have the same size as the inner diameter.

In the discharge hose of this embodiment, the extension portion includes an inclined extension portion 800C extending in an inclined direction.

The vertical length L3 of the inclined extension portion 800C may be 0.1 to 0.9 times the vertical length L2 of the internal space of the

discharge mufflers

425 and 438.

In order to fix the inclined extension part 800C, a fixing part 425B may be provided on the inner wall of the third assembly part 425.

Additionally, a plurality of second inlet holes H2 may be formed in the inclined extension portion 800C, and an end of the inclined extension portion 800C where the first inlet hole H1 is located may be formed in a funnel shape.

And, the first and second partition walls of the above-described embodiment may be located inside the discharge muffler.

In the discharge hose of this embodiment, a horizontal extension portion 800B is further provided at the end of the inclined extension portion 800C.

Alternatively, as shown in FIG. 26, a vertical extension portion 800A may be further provided at the end of the inclined extension portion 800C.

25 and 26, a plurality of second inlet holes H2 may be formed in at least one of the vertical extension portion 800A, the horizontal extension portion 800B, and the inclined extension portion 800C. And, the end of the extension portion where the first inlet hole H1 is located may be formed in a funnel shape.

In the discharge hose of this embodiment, the extension portion includes a horizontal extension portion 800B and a vertical extension portion 800A.

discharge mufflers

425 and 438.

In order to fix the vertical extension part 800A, a fixing part 425B may be provided on the inner wall of the third assembly part 425.

And a plurality of second inlet holes (H2) may be formed in at least one of the horizontal extension portion (800B) and the vertical extension portion (800A), and the vertical extension portion ( The end of 800A) may be formed in a funnel shape.

And the first and second partition walls of the above-described first embodiment may be located inside the discharge muffler.

In the discharge hose of this embodiment, another horizontal extension part (800B) is further provided at the end of the vertical extension part (800A).

A plurality of second inlet holes (H2) may be formed in at least one of the vertical extension portion (800A) and the two horizontal extension portions (800B), and the horizontal extension portion where the first inlet hole (H1) is located. The end of 800B may be formed in a funnel shape.

It is obvious to those skilled in the art that the present specification can be embodied in other specific forms without departing from the essential features of the present specification. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of this specification should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of this specification are included in the scope of this specification.

Claims

In a reciprocating compressor including a discharge unit that receives and discharges the compressed refrigerant from the compression unit,

The discharge part,

A discharge muffler including a muffler body and a muffler cover coupled with the muffler body to form an internal space;

a discharge hose connecting a discharge pipe coupled to a sealed container with the discharge muffler; and

Pulsation reduction member located inside the discharge muffler

A reciprocating compressor comprising a.
In paragraph 1:

The pulsation reduction member includes a first partition located on the inner surface of the bottom of the muffler cover and protruding toward the muffler body, and a second partition located on the inner surface of the bottom of the muffler body and protruding toward the muffler cover. reciprocating compressor.
In paragraph 2,

The first partition wall and the second partition wall are located adjacent to each other in the horizontal direction within the interior space,

A reciprocating compressor in which a flow path is formed between an end of the first partition wall and an inner surface of the bottom of the muffler body and between an end of the second partition wall and an inner surface of the bottom of the muffler cover.
In paragraph 2,

The first partition wall and the second partition wall are positioned to face each other within the internal space, and a flow path is formed between an end of the first partition wall and an end of the second partition wall.
In paragraph 2,

A reciprocating compressor wherein at least one of the first and second partition walls is provided in plural numbers.
In paragraph 5,

A reciprocating compressor wherein the first partition wall and the second partition wall are each provided in equal numbers.
In paragraph 5,

The first partition wall and the second partition wall are located adjacent to each other in the horizontal direction within the interior space,

A reciprocating compressor in which a flow path is formed between an end of the first partition wall and an inner surface of the bottom of the muffler body and between an end of the second partition wall and an inner surface of the bottom of the muffler cover.
In paragraph 6:

The plurality of first partition walls and the plurality of second partition walls are positioned to face each other within the interior space, and a flow path is formed between ends of the first partition wall and ends of the second partition wall.
In any one of paragraphs 2 to 8,

A reciprocating compressor wherein an end of the first partition and an end of the second partition forming the flow path are provided with a nozzle unit.
In paragraph 1:

The pulsation reduction member includes an extension of the discharge hose extending into an internal space of the discharge muffler, and a first inlet hole is formed at an end of the extension.
In paragraph 10:

A reciprocating compressor wherein the end of the extension portion where the first inlet hole is formed is formed in a funnel shape.
In paragraph 10 or 11:

A reciprocating compressor wherein the extension includes a vertical extension extending in a vertical direction, and the vertical length of the vertical extension is 0.1 to 0.9 times the vertical length of the internal space.
In paragraph 12:

A reciprocating compressor wherein the vertical extension portion is provided with a plurality of second inlet holes.
In paragraph 12:

The extension portion further includes a horizontal extension portion extending in a horizontal direction from an end of the vertical extension portion.
In paragraph 14:

A reciprocating compressor wherein at least one of the vertical extension and the horizontal extension is provided with a plurality of second inlet holes.
In paragraph 10 or 11:

A reciprocating compressor wherein the extension includes an inclined extension extending in an inclined direction, and the vertical length of the inclined extension is 0.1 to 0.9 times the vertical length of the internal space.
In paragraph 16:

A reciprocating compressor wherein the inclined extension portion is provided with a plurality of second inlet holes.
In paragraph 16:

The extension portion further includes at least one extension portion of a horizontal extension portion extending in a horizontal direction from an end of the inclined extension portion and a vertical extension portion extending in a vertical direction from an end of the inclined extension portion.
In paragraph 10 or 11:

The extension part includes a horizontal extension part extending in a horizontal direction and a vertical extension part extending in a vertical direction from an end of the horizontal extension part, and the vertical length of the vertical extension part is 0.1 times the vertical length of the internal space. 0.9x reciprocating compressor.
In paragraph 19:

A reciprocating compressor wherein at least one of the horizontal extension part and the vertical extension part is provided with a plurality of second inlet holes.