KR20070030339A - Hermetic compressor - Google Patents

Abstract

The present invention relates to a hermetic compressor, and an object of the present invention is to provide a hermetic compressor provided to suppress a heat exchange effect between the discharge refrigerant and the suction refrigerant.

To this end, the hermetic compressor according to the present invention includes a cylinder block having a compression chamber for compressing a refrigerant, a cylinder head coupled to the cylinder block to seal the compression chamber, and having a refrigerant suction chamber and a refrigerant discharge chamber separated from each other; A valve device interposed between the compression chamber and the cylinder head to control the flow of the refrigerant sucked into the compression chamber from the refrigerant suction chamber or discharged from the compression chamber to the refrigerant discharge chamber, and noise of the refrigerant discharged from the refrigerant discharge chamber is reduced. And a discharge pipe provided to connect the discharge chamber and the discharge chamber through the outside of the cylinder block.

Description

Hermetic Compressor {HERMETIC TYPE COMPRESSOR}

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

Figure 2 is a perspective view showing the cylinder block side in the hermetic compressor according to the present invention, it is shown by cutting the main portion.

Explanation of symbols on the main parts of the drawings

3: discharge tube 11: cylinder block

11a: compression chamber 13a: refrigerant suction chamber

13b: refrigerant discharge chamber 30: discharge chamber

40: connector 50: accumulator

51: auxiliary discharge chamber

The present invention relates to a hermetic compressor, and more particularly to a hermetic compressor provided to suppress the heat exchange action between the discharge refrigerant and the suction refrigerant.

In general, a hermetic compressor, which is employed in a refrigeration cycle such as a refrigerator or an air conditioner, to compress a refrigerant, provides a compression unit that performs a compression operation of the refrigerant in the sealed container forming an exterior, and a driving force for compressing the refrigerant. A driving part is provided.

One side and the other side of the sealed container are provided with a suction tube for guiding the refrigerant into the sealed container and a discharge tube for guiding the refrigerant compressed inside the sealed container to the outside, and the compression part and the driving part are provided inside the sealed container through the cylinder block. Are mutually coupled.

Compression unit is formed in the through-hole in the center portion is coupled to the rotating shaft of the drive unit and the cylinder block formed in the compression chamber to compress the refrigerant and the piston connected to the rotary shaft through a connecting rod linearly in one side and the compression chamber A cylinder head having a refrigerant suction chamber and a refrigerant discharge chamber coupled to the cylinder block to be sealed and partitioned with each other, and interposed between the compression chamber and the cylinder head, the refrigerant flowing from the refrigerant suction chamber into the compression chamber or discharged from the compression chamber into the refrigerant discharge chamber. It is provided with a valve device provided to control the flow of the.

Therefore, when the rotating shaft is rotated while the driving unit is driven, the piston connected through the rotating shaft and the connecting rod is compressed in the compression chamber. Accordingly, the refrigerant guided into the sealed container through the suction pipe is passed into the compression chamber through the refrigerant suction chamber. The refrigerant is delivered and compressed inside the compression chamber, and the refrigerant compressed in the compression chamber is once delivered to the refrigerant discharge chamber.

In addition, the lower side of the cylinder block is formed with a discharge chamber for guiding the compressed refrigerant discharged from the refrigerant discharge chamber to the discharge pipe in a state in which the noise is reduced, the interior of the cylinder block to communicate the discharge chamber and the refrigerant discharge chamber The connection flow path is processed into a hole shape, and the inlet of the discharge pipe is connected to the discharge chamber.

Therefore, the compressed refrigerant delivered to the refrigerant discharge chamber is discharged to the discharge chamber along the connection passage and discharged to the outside of the sealed container along the discharge tube in a state where noise is reduced.

However, such a conventional hermetic compressor is formed in the cylinder block so that the refrigerant flow chamber and the discharge chamber communicate with the compression chamber, so that it is compressed in the compression chamber and guided to the discharge refrigerant and the compression chamber guided to the discharge chamber along the connection passage. There is a problem that excessive heat loss of the discharged refrigerant occurs due to the heat exchange between the suction refrigerants.

The present invention is to solve such a problem, it is an object of the present invention to provide a hermetic compressor provided to suppress the heat exchange action between the discharge refrigerant and the suction refrigerant.

The hermetic compressor according to the present invention for achieving the above object is a cylinder block formed with a compression chamber for compressing the refrigerant, a cylinder coupled to the cylinder block to seal the compression chamber, the refrigerant suction chamber and the refrigerant discharge chamber is provided to be partitioned with each other A valve device interposed between the compression chamber and the cylinder head to control a flow of the refrigerant sucked from the refrigerant suction chamber into the compression chamber or discharged from the compression chamber to the refrigerant discharge chamber, and the refrigerant discharged from the refrigerant discharge chamber. It characterized in that it comprises a discharge chamber provided to reduce the noise of the, and the connection pipe is provided to connect the refrigerant discharge chamber and the discharge chamber through the outside of the cylinder block.

And in the middle of the connecting pipe is characterized in that the auxiliary discharge chamber is provided.

In addition, the discharge chamber is characterized in that formed integrally with the cylinder block.

Hereinafter, exemplary 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. A discharge pipe 3 for discharging the refrigerant compressed in the sealed container 1 to the outside of the sealed container 1 through the suction pipe 2 and the compression unit 10 to guide the inside thereof is 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 seal 11a and formed such that the refrigerant suction chamber 13a and the refrigerant discharge chamber 13b are mutually partitioned, and the cylinder block 11 and the cylinder head. And a valve device 14 for intermittent the flow of the refrigerant sucked from the refrigerant suction chamber 13a to the compression chamber 11a or discharged from the compression chamber 11a to the refrigerant discharge chamber 13b. It is composed.

In addition, the driving unit 20 provides a driving force to allow the piston 12 to reciprocate in the compression chamber 11a. The stator 21 fixed to the upper outer side of the cylinder block 11 and the stator It is provided with a rotor 22 spaced apart in the interior of the rotor 21 is provided to rotate in an electromagnetic interaction with the stator 21, the center of the rotor 22 can rotate with the rotor 22 The rotary shaft 23 is press-fitted so as to be pressed.

The lower portion of the rotating shaft 23 is coupled to the through hole 11b formed in the center of the cylinder block 11, the eccentric portion 24 is provided on the rotating shaft 23 below the through hole 11b so as to eccentrically rotate. Between the core part 24 and the piston 12, one end is rotatably coupled to the eccentric part 24 to convert the eccentric rotation of the eccentric part 24 into linear motion, and the other end is rotated and straight on the piston 12. The connecting rod 25 installed to be movable is installed. For reference, reference numeral 26 is a suction muffler coupled to the cylinder head 13 on the refrigerant suction chamber 13a side to reduce suction noise of the refrigerant guided from the suction pipe 2 to the refrigerant suction chamber 13a.

Therefore, in the hermetic 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 supply, the eccentric portion 24 And the piston 12 connected through the connecting rod 25 perform a linear reciprocating motion inside the compression chamber 11a, through which the refrigerant outside the sealed container 1 is discharged from the suction pipe 2 to the cylinder head 13. After flowing into the refrigerant suction chamber 13a and delivered to the compression chamber 11a and compressed inside the compression chamber 11a, the refrigerant compressed in the compression chamber 11a is once the refrigerant discharge chamber of the cylinder head 13 ( 13b).

On the other hand, at the lower side of the cylinder block 11, the discharge chamber 30 opened downward to guide the discharge refrigerant discharged from the refrigerant discharge chamber 13b to the discharge tube 3 in a state where noise is reduced. The discharge chamber 30 is sealed through a cover 31 coupled to the opening side cylinder block 11, and an inlet end of the discharge tube 3 is coupled to one side of the cover 31. Between the cylinder head 13 and the other side of the cover 31 is provided with a connecting pipe 40 for communicating between the refrigerant discharge chamber 13b and the discharge chamber 30 through the outside of the cylinder block 11, The connecting pipe 40 is installed to be spaced apart from the cylinder block (11).

As such, the configuration of the connection pipe 40 installed outside the cylinder block 11 to guide the discharge refrigerant of the refrigerant discharge chamber 13b to the discharge chamber 30 via the outside of the cylinder block 11 may include a connection pipe ( It is to suppress the heat exchange action between the discharge refrigerant guided along the 40 and the suction refrigerant flowing into the compression chamber (11a) inside the cylinder block 11, the discharge refrigerant is provided to pass through the inside of the cylinder block (11) Compared to this, the heat loss of the discharged refrigerant is greatly reduced.

In addition, the accumulator 50 is formed in the middle of the connecting pipe 40 to form an auxiliary discharge chamber 51, through which the auxiliary discharge chamber 51 and the discharge chamber 30 are sequentially passed. In addition, the discharge refrigerant, which has a pulsation reduction in two times, can further reduce its discharge noise. This is because the auxiliary discharge chamber 51 is formed as much as the connection pipe 40 is formed in the outer space of the cylinder block 11. This is more easily possible because the space constraints for forming the circuit are reduced.

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

When the rotating shaft 23 rotates together with the rotor 22 by the electrical interaction between the stator 21 and the rotor 22, the piston 12 connected through the connecting shaft 25 and the rotating shaft 23 is As the linear reciprocating motion is performed inside the compression chamber 11a, a pressure difference between the compression chamber 11a and the outside occurs.

Through this, the refrigerant introduced into the sealed container 1 along the suction pipe 2 is sucked into the compression chamber 11a through the suction muffler 26 and the refrigerant suction chamber 13a, and is compressed in the compression chamber 11a. The refrigerant compressed in the compression chamber 11a is discharged to the refrigerant discharge chamber 13b in a state of high temperature and high pressure.

The refrigerant discharged into the refrigerant discharge chamber 13b is transferred to the discharge chamber 30 along the connection pipe 40, and the refrigerant delivered to the discharge chamber 30 is diffused from the discharge chamber 30, thereby reducing the pulsation. It is supplied to the outside of the sealed container 1 along the discharge tube 3 in a state.

At this time, in the hermetic compressor according to the present invention, the discharge pipe guided from the refrigerant discharge chamber 13b to the discharge chamber 30 is installed to be spaced apart from the cylinder block 11 outside the cylinder block 11. Since it is moved along, the heat exchange action between the discharge refrigerant guided to the discharge chamber 30 along the connecting pipe 40 and the suction refrigerant sucked into the compression chamber 11a inside the cylinder block 11 is suppressed and the discharge refrigerant The heat loss can be greatly reduced.

In addition, in the hermetic compressor according to the present invention, the refrigerant discharged to the discharge pipe 3 through the auxiliary discharge chamber 51 installed in the middle of the connecting pipe 40 is diffused in the auxiliary discharge chamber 51 1 Since the pulsation is secondarily reduced while being guided to the discharge chamber 30 again in the state where the pulsation is reduced, the noise of the discharge refrigerant can be further reduced in the process of reducing the pulsation in multiple stages. .

As described above in detail, the hermetic compressor according to the present invention is discharged to the discharge chamber because the discharge refrigerant discharged from the refrigerant discharge chamber is guided to the discharge chamber through the connecting pipe installed to be spaced apart from the cylinder block outside the cylinder block. The heat exchange action between the refrigerant and the suction refrigerant sucked into the compression chamber inside the cylinder block is suppressed, so that the heat loss of the discharge refrigerant is greatly reduced.

Claims (3)

A cylinder block having a compression chamber for compressing a refrigerant, a cylinder head coupled to the cylinder block to seal the compression chamber, and configured to partition the refrigerant suction chamber and the refrigerant discharge chamber from each other, and sucked into the compression chamber from the refrigerant suction chamber, or A valve device interposed between the compression chamber and the cylinder head to control the flow of the refrigerant discharged from the compression chamber to the refrigerant discharge chamber, a discharge chamber provided to reduce noise of the refrigerant discharged from the refrigerant discharge chamber, and the cylinder A hermetic compressor comprising a connecting tube provided to connect the refrigerant discharge chamber and the discharge chamber through an outside of the block. The method of claim 1, Hermetic compressor characterized in that the auxiliary discharge chamber is provided in the middle of the connecting pipe. The method of claim 1, The discharge chamber is a hermetic compressor, characterized in that formed integrally with the cylinder block.

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