KR20060024717A - Compressor with discharging muffler - Google Patents

Abstract

The present invention relates to a compressor, an object of the present invention is to provide a compressor having a discharge muffler provided to further reduce the discharge noise of the refrigerant.

Compressor having a discharge muffler according to the present invention for this purpose and the compression chamber is provided in the cylinder block inside the sealed container; A discharge tube installed in the sealed container to discharge the refrigerant compressed in the compression chamber to the outside of the sealed container; A first discharge muffler provided between the compression chamber and the discharge tube so that an internal space is divided into a first space in direct communication with the compression chamber side and a second space in direct communication with the discharge tube side; And a second discharge muffler provided to communicate with each of the first and second spaces through separate communication passages.

Description

Compressor with discharging muffler {Compressor with discharging muffler}

1 is a cross-sectional view showing the overall structure of a hermetic compressor according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B of Figure 2, showing the structure of the discharge muffler. 4 is a cross-sectional view taken along the line C-C of Figure 3, showing the flow of the refrigerant.

5 is a cross-sectional view taken along the line B-B of Figure 2, showing a structure of a discharge muffler according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along the line D-D of FIG. 5 and illustrates the flow of the inner medium.

Explanation of symbols on the main parts of the drawings

1: airtight container 2: suction line

3: discharge tube 10: compression part

11: cylinder block 11a: compression chamber

11b: connection path 40: first discharge muffler

41: first depression 42: first cover

43,43´: Partition member 44: Communication part

50: second discharge muffler 51: second depression

52: cover 2 61: space 14

62: second space 70: the inner space of the second discharge muffler

81: first communication path 82: second communication path

The present invention relates to a compressor, and more particularly to a compressor having a plurality of discharge muffler to reduce the noise of the discharge refrigerant.

In general, a compressor employed in a refrigerating cycle such as a refrigerator or an air conditioner forms an exterior through a sealed container. A compression unit for compressing a refrigerant is performed inside the sealed container, and a compression power according to the compression of the refrigerant. The driving unit is provided, and one side and the other side of the sealed container are provided with a suction tube for guiding the external refrigerant into the sealed container and a discharge tube for discharging the refrigerant compressed in the compression unit to the outside of the sealed container.

The double compression unit is provided in the lower portion of the sealed container, the cylinder block formed with a compression chamber to compress the refrigerant, the piston reciprocating linearly inside the compression chamber to perform the compression action of the refrigerant, and the cylinder block to seal the compression chamber. It is composed of a cylinder head coupled to one side and partitioned between the discharge chamber and the suction chamber, and provided between the cylinder block and the cylinder head to control the flow of the refrigerant sucked into the compression chamber from the suction chamber or discharged from the compression chamber to the discharge chamber. .

Through this configuration, when the driving unit is driven, the piston makes a linear reciprocating motion inside the compression chamber. Through this, the refrigerant outside the sealed container flows into the suction chamber of the cylinder head from the suction tube, and then is transferred to the compression chamber and compressed inside the compression chamber. The refrigerant compressed in the compression chamber is discharged to the refrigerant discharge chamber of the cylinder head and then discharged to the outside of the sealed container through the discharge tube. This process is repeated and the refrigerant is compressed through the compressor.

On the other hand, one side of the cylinder block is provided on the flow path connecting between the discharge chamber and the discharge pipe, there is provided a discharge muffler for reducing the noise of the refrigerant discharged from the discharge chamber, the discharge muffler has an internal space discharge chamber And a first discharge muffler which is in direct communication with the discharge tube and forms a predetermined expansion space, and a second discharge muffler which connects an inner space with an internal space of the first discharge muffler to form a Helmholtz resonance space. do.

Therefore, the refrigerant moving from the discharge chamber to the discharge tube through the first discharge muffler diffuses inside the first discharge muffler forming the expansion space and at the same time, the pulsation noise is generated through the noise canceling action of the second discharge muffler forming the Helmholtz resonance space. In the reduced state, it is discharged out of the sealed container.

However, such a conventional compressor having a discharge muffler is provided to have only a single expansion space formed through the first discharge muffler interior space, which makes it difficult to repeatedly spread the refrigerant through the discharge muffler, thereby greatly reducing the pulsation noise of the discharge refrigerant. There was a problem that became impossible.

The present invention is to solve such a problem, the object of the present invention to provide a compressor having a discharge muffler provided to further reduce the discharge noise of the refrigerant.

Compressor having a discharge muffler according to the present invention for achieving this object is a compression chamber provided in the cylinder block inside the sealed container; A discharge tube installed in the sealed container to discharge the refrigerant compressed in the compression chamber to the outside of the sealed container; A first discharge muffler provided between the compression chamber and the discharge tube so that an internal space is divided into a first space in direct communication with the compression chamber side and a second space in direct communication with the discharge tube side; And a second discharge muffler provided to communicate with each of the first and second spaces through a separate communication passage.

The first and second discharge mufflers are provided in the cylinder block, and the communication passage is formed inside the cylinder block.

In addition, the communication flow path is characterized in that provided by drilling the cylinder block.

In addition, the first discharge muffler is provided with a partition member for partitioning the first space and the second space, characterized in that the partition member is provided so that the first space and the second space is partitioned in a sealed state. .

In addition, the first discharge muffler is provided with a partition member for partitioning the first space and the second space, the partition member is characterized in that the first space and the second space is partitioned in a state in communication with each other. .

In addition, the first discharge muffler includes a recess formed in the cylinder block, a cover provided to close the opening of the recess, and a partition member provided inside the recess to partition the first space and the second space. In addition, a communication unit for communicating the first space and the second space is provided between the partition member and the cover. The first discharge muffler may include a recess formed in the cylinder block, a cover provided to close the opening of the recess, and a partition member provided inside the recess to partition the first space and the second space. And the partition member is manufactured integrally with the cylinder block.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the compressor according to the present invention is an airtight container (1) formed by combining the upper container (1a) and the lower container (1b), and is provided in the sealed container (1) And a compression unit 10 through which the compression of the refrigerant is performed, and a driving unit 20 providing compression power according to the compression of the refrigerant, and on one side and the other side of the sealed container 1, an external refrigerant is sealed in the sealed container 1. The suction tube 2 for guiding the inside and the discharge tube 3 for discharging the refrigerant compressed by the compression unit 10 to the outside of the sealed container 1 are provided.

The double compression unit 10 includes a cylinder block 11 in which a compression chamber 11a is formed to compress the refrigerant, a piston 12 linearly reciprocating in the compression chamber 11a to perform a compression action of the refrigerant, and compression A cylinder head 13 coupled to one side of the cylinder block 11 to seal the chamber 11a and having a suction chamber 13a and a discharge chamber 13b partitioned therebetween, and between the cylinder block 11 and the cylinder head 13. And a valve device 14 for interrupting the flow of the refrigerant sucked into the compression chamber 11a from the suction chamber 13a or discharged from the compression chamber 11a to the discharge chamber 13b.

In addition, the drive unit 20 provides a driving force to allow the piston 12 to reciprocate in the compression chamber 11a. The stator 21 and the stator 21 fixed inside the sealed container 1 are provided. It is provided with a rotor 22 spaced apart from the inside of the stator 21 and the electromagnetic interaction. And the center of the rotor 22 is provided with a rotating shaft 23 so as to be interlocked with the rotor 22, the lower portion of the rotating shaft 23 of the eccentric portion 24 and the eccentric portion 24 for eccentric rotation One end is rotatably coupled to the eccentric portion 24 so that the eccentric rotation can be converted into a linear movement, and the other end is provided with a connecting rod 25 installed to rotate and linearly move the piston 12. For reference, reference numeral 26 is a support bearing seated on the upper portion of the cylinder block 11 to support the rotation of the rotary shaft 23 and the rotor 22.

Therefore, the compressor having such a configuration, when the rotary shaft 23 rotates together with the rotor 22 by the electrical interaction between the stator 21 and the rotor 22 according to the power applied, the eccentric 24 and The piston 12 connected through the connecting rod 25 performs a linear reciprocating motion inside the compression chamber 11a, through which the refrigerant outside the sealed container 1 is sucked in the cylinder head 13 from the suction pipe 2. After flowing into the chamber 13a, it is delivered to the compression chamber 11a and compressed inside the compression chamber 11a. The refrigerant compressed in the compression chamber 11a is then returned to the discharge chamber 13b of the cylinder head 13. After the discharge is discharged to the outside of the sealed container 1 through the discharge pipe (4), this process is repeated and the compression of the refrigerant through the compressor is performed.

In addition, an upper portion of the cylinder head 13 includes a suction muffler 30 connecting the suction chamber 13a and the suction tube 2 to reduce suction noise of the refrigerant sucked into the compression chamber 11a from the suction tube 2. Discharge mufflers 40 and 50 are provided on the lower side of the cylinder block 11 to reduce the discharge noise of the refrigerant discharged from the compression chamber 11a to the discharge tube 3.

3 and 4, the discharge mufflers 40 and 50 are disposed between the discharge chamber 13b of the cylinder head 13 and the discharge tube 3, and an internal space thereof is formed in the discharge chamber ( 13b), the first discharge muffler 40 and the internal space 70 are provided so as to be partitioned into the first space 61 and the second space 62, which is in direct communication with the discharge pipe (3). And second discharge mufflers 50 arranged to communicate with the second spaces 61 and 62 separately through the first and second communication passages 81 and 82, respectively. ) Is composed of the first space 61 in which the refrigerant discharged from the discharge chamber 13b is formed in the first discharge muffler 40, the internal space 70 of the second discharge muffler 50, and By passing through the second space 62 formed in the first discharge muffler 40 in turn and spreading in each space, the noise of the discharged refrigerant is significantly reduced. Intended to.

That is, the refrigerant discharged from the discharge chamber 13b through the above configuration first flows into the first space 61 of the first discharge muffler 40 and is diffused, and the first communication passage (1) is first reduced in noise. The refrigerant discharged into the second discharge muffler 50 into the inner space 70 through the 81, introduced into the second discharge muffler 50 into the internal space 70, and diffused into the second discharge muffler 50, further reduces the second communication. It flows into the second space 62 of the first discharge muffler 40 through the flow path 82 and is diffused, and is discharged to the outside through the discharge pipe 3 in a state where the noise is reduced in the third, the first Through the compartment structure of the discharge muffler 40 and the communication structure between the first and second discharge mufflers 40 and 50, the refrigerant diffused repeatedly through a plurality of spaces is discharged in a state where pulsation noise is greatly reduced. It can be discharged through the tube (3).

To describe in more detail the structure of the discharge muffler (40, 50), the first and second discharge muffler (40, 50) provided on one side and the other side of the lower cylinder block 11, respectively, the lower cylinder block (11) The depressions 41 and 51 are provided to be recessed from the outer side into the cylinder block 11 and the lids 42 and 52 are provided to close the openings of the depressions 41 and 51. And 51 are divided into a first recessed part 41 forming the first discharge muffler 40 and a second recessed part 51 forming the second discharge muffler 50, and the lids 42 and 52 are It is divided into a first cover 42 for closing the opening of the first recess 41, and a second cover 52 for closing the opening of the second recess 51, the first and second cover ( 42 and 52 are fastened to the first and second recesses 41 and 51 via bolts 90, respectively. In addition, in the cylinder block 11 between the first recess 41 and the discharge chamber 13b, a connection flow path 11b for guiding the refrigerant discharged from the discharge chamber 13b into the first discharge muffler 40. Is formed, the first cover 42 is the inner end of the discharge vessel 3 is coupled to the inner end of the sealed container 1 is extended to the internal space of the first discharge muffler 40, the first recess 41 The inner space of the first discharge muffler 40 is partitioned into a first space 61 provided to be in direct communication with the connection passage 11b and a second space 62 provided to be in direct communication with the discharge pipe 3. The partition member 43 is provided, and the partition member 43 is provided such that the first space 61 and the second space 62 are partitioned in a sealed state.

In this case, the partition member 43 is manufactured as a separate member, so that the cylinder block 11 when the casting of the cylinder block 11 is made of a casting so as to avoid the hassle to be coupled to the first recess 41. It is formed integrally with, the central portion of the partition member 43 is provided with a first boss portion (43a) formed with a female threaded hole so that the bolt 90 is fastened. For reference, reference numeral 53 is provided in the second recess 51 so that the second cover 52 may be fastened to the second recess 51 through the bolt 90 and has a cylindrical second in which a female screw hole is formed. It's boss.

In addition, the communication passages 81 and 82 are configured to communicate the first space 61 of the first discharge muffler 40 with the internal space 70 of the second discharge muffler 50. The first communication passage 81 provided inside the cylinder block 11 between the first recess 41 and the second recess 51, and the second space 62 of the first discharge muffler 40. And provided inside the cylinder block 11 between the first recess 41 and the second recess 51 at the side of the second space 62 so as to communicate the internal space 70 of the second discharge muffler 50. It includes a second communication passage 82, which is formed by drilling the cylinder block 11 directly to the first and second communication passages (81, 82) to avoid the need to use a separate tube or tube desirable.

Next, the operation of the hermetic compressor according to the present invention and its effects will be described.

First, when the rotating shaft 23 rotates together with the rotor 22 by the electrical interaction between the stator 21 and the rotor 22 according to the power application, the eccentric portion 24 and the connecting rod 25 are rotated. The piston 12 connected through the linear reciprocating motion in the compression chamber (11a), through which the refrigerant outside the sealed container (1) passing through the suction muffler (30) from the suction pipe (2) is somewhat reduced noise After flowing into the suction chamber 13a of the cylinder head 13 in a state, it is transferred to the compression chamber 11a and compressed in the compression chamber 11a, and the refrigerant compressed in the compression chamber 11a is thus again returned to the cylinder head. It is discharged to the discharge chamber 13b of (13).

The refrigerant discharged from the discharge chamber 13b is first introduced into and diffused into the first space 61 of the first discharge muffler 40 and primarily through the first communication passage 81 in a state where noise is reduced. The refrigerant that is introduced into the second discharge muffler 50 into the internal space 70, flows into the second discharge muffler 50 into the internal space 70, and is secondarily reduced in noise again has a second communication flow path 82. The first discharge muffler 40 flows into the second space 62 of the first discharge muffler 40 and is diffused to the outside through the discharge pipe 3 in the state where the noise is reduced thirdly. Through the plurality of spaces sequentially and through the communication structure between the first and second discharge mufflers (40, 50) of the partition structure and the refrigerant is repeatedly diffused in the discharge pipe (3) It can be discharged through.

Meanwhile, FIGS. 5 and 6 illustrate discharge mufflers 40 and 50 according to another embodiment of the present invention. As shown in FIG. 5, discharge mufflers 40 and 50 according to another embodiment of the present invention are shown. The partition member 43 ′ provided in the inner space of the first discharge muffler 40 is provided so as to be partitioned in a state in which the first space 61 and the second space 62 are in communication with each other. A communication portion 44 is formed between the inner surface of the first cover 42 and the end of the partition member 43 'on the first cover 42 side so that the 61 and the second space 62 can communicate with each other.

Therefore, at this time, the refrigerant discharged from the discharge chamber 13b is formed in the first space 61 of the first discharge muffler 40, the internal space 70 of the second discharge muffler 50, and the first discharge muffler 40. The second space 62 of the first through the second space 62 is repeatedly diffused, as well as some of the refrigerant moved to the first space 61 is the communication portion between the partition member 43 'and the first cover 42 ( The second space 62 is able to flow through the second space 62, so that the second space 62 can function as a diffusion space and a Helmholtz resonance space, thereby providing a somewhat different manner from that of the first embodiment. The pulsation noise can be greatly reduced.

As described above in detail, the compressor having a discharge muffler according to the present invention is provided so that the diffusion action of the refrigerant may be repeatedly performed through the communication passage with the partition member while employing a pair of discharge mufflers as in the prior art. Noise can be further reduced.

Claims (7)

A compression chamber provided in the cylinder block inside the sealed container; A discharge tube installed in the sealed container to discharge the refrigerant compressed in the compression chamber to the outside of the sealed container; A first discharge muffler provided between the compression chamber and the discharge tube so that an internal space is divided into a first space in direct communication with the compression chamber side and a second space in direct communication with the discharge tube side; And a second discharge muffler provided to communicate with each of the first and second spaces through separate communication passages. The method of claim 1, And the first and second discharge mufflers are provided in the cylinder block, and the communication passage is formed in the cylinder block. The method of claim 2, The communication passage has a discharge muffler, characterized in that provided by drilling the cylinder block. The method of claim 1, The first discharge muffler is provided with a partition member for partitioning the first space and the second space, the partition member is characterized in that the first space and the second space is provided so as to be partitioned in a sealed state with each other Compressor with muffler. The method of claim 1, The first discharge muffler is provided with a partition member for partitioning the first space and the second space, the partition member is characterized in that the discharge muffler is provided so as to partition the first space and the second space in communication with each other. Equipped with a compressor. The method of claim 5, The first discharge muffler includes a recess formed in the cylinder block, a cover provided to close the opening of the recess, and a partition member provided inside the recess to partition the first space and the second space. Compressor having a discharge muffler is provided between the partition member and the cover communicating portion for communicating the first space and the second space. The method of claim 1, The first discharge muffler includes a recess formed in the cylinder block, a cover provided to close the opening of the recess, and a partition member provided inside the recess to partition the first space and the second space. Compressor having a discharge muffler, characterized in that the partition member is manufactured integrally with the cylinder block.

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