KR101990137B1 - Accumulator and Compression Unit including the same - Google Patents

Abstract

The present invention relates to an accumulator and a compression unit including the same. According to an aspect, the accumulator comprises: a housing having a space in which refrigerants are stored; an inflow pipe coupled to the housing and guiding an inflow of the refrigerants; a first refrigerant pipe arranged in the housing to enable a separated gas-phased refrigerant of the refrigerants to flow therein; a second refrigerant pipe connected to the first refrigerant pipe, and extending outward from the housing to be connected to a compressor; and an oil suction pipe connected to the first refrigerant pipe to enable oil in the housing to flow into the oil suction pipe.

Description

Accumulator and Compression Unit including the same

The present invention relates to an accumulator and a compression unit comprising the same.

In general, a compressor is a mechanical device that increases pressure by receiving power from a power generator such as an electric motor or a turbine to compress air, refrigerant, or various other working gases. It is widely used throughout.

These compressors can be broadly classified into a reciprocating compressor, a rotary compressor, and a scroll compressor.

The reciprocating compressor may be a compressor that compresses the refrigerant while the piston reciprocates linearly in the cylinder by forming a compression space in which the working gas is absorbed and discharged between the piston and the cylinder.

In addition, the rotary compressor may be a compressor for compressing a refrigerant while an eccentrically rotating roller is formed between a cylinder and a cylinder in which a working gas is absorbed and discharged and the roller is eccentrically rotated along an inner wall of the cylinder.

In addition, the scroll compressor is a compressor that is formed between the orbiting scroll (Fixed scroll) and the fixed scroll (Fixed scroll) is a compression space for the operating gas is sucked and discharged, and the rotating scroll rotates along the fixed scroll to compress the refrigerant Can be.

The compressors described above are equipped with an accumulator for receiving a low-temperature, low-pressure gaseous refrigerant. The accumulator may be understood as a device that separates a liquid refrigerant from the refrigerant introduced from a heat exchanger (eg, an evaporator) and discharges only the gaseous refrigerant to the compressor.

A structure for a conventional accumulator is disclosed in Republic of Korea Patent Publication No. 10-2011-0095155.

The prior art discloses a structure in which a connecting pipe extending from the side of the compressor is bent upward and penetrates through the bottom of the accumulator.

That is, the prior art discloses a structure in which a connecting pipe is formed in an “L” shape to connect a compressor and an accumulator.

However, according to the prior art, the vibration generated from the compressor is transmitted to the accumulator by the connecting pipe formed in the "L" shape in order to connect the side of the compressor and the bottom of the accumulator, the loud noise is generated, The bent connection pipe is exposed to the outside is vulnerable to the impact from the outside.

In addition, the oil for the lubrication function between the mechanism when the compressor is driven is stored in the accumulator, the oil is introduced into the compressor through a hole formed at a constant height of the connection pipe, but the amount of oil flowing through the hole is limited And, there is a problem that the performance of the compressor is lowered due to the introduction of the liquid refrigerant with the oil.

The present invention is to provide an accumulator and a compression unit including the same that can minimize the vibration generated in the compressor is transmitted to the accumulator side through the connection pipe.

The present invention provides an accumulator in which oil for a lubrication function can be smoothly flowed to the compressor side, and a compression unit including the same.

The present invention provides an accumulator capable of stably fixing a compressor and an accumulator, and a compression unit including the accumulator.

Accumulator according to the present invention may include an oil suction pipe for flowing the oil stored in the oil storage space of the housing to the compressor side, it is possible to smoothly perform the lubrication function in the compressor.

Accumulator according to the present invention, by minimizing the length of the refrigerant pipe exposed between the compressor and the accumulator, it is possible to prevent the refrigerant pipe from being damaged from an external impact, and to minimize the vibration transmitted from the compressor.

The compression unit according to the present invention includes a connecting bracket for fixing the compressor and the accumulator, so that the compressor and the accumulator can be stably fixed, thereby minimizing the resonance of the accumulator by the vibration generated in the compressor. Can be.

According to the present invention, since the accumulator has a fixed structure capable of stably fixing the accumulator to the compressor, the vibration generated in the compressor can be minimized from being transmitted to the accumulator through the refrigerant pipe. Therefore, the vibration of the accumulator is minimized by the vibration generated in the compressor, there is an advantage that the noise due to the vibration can be reduced.

According to the present invention, since the oil stored in the accumulator can be sucked to the compressor side by the suction force generated by the flow of the gaseous refrigerant flowing along the refrigerant pipe, the oil is smoothly supplied to the compressor side, and smooth lubrication. The function can be performed.

According to the present invention, since the oil supplied to the compressor is smoothly supplied, it is possible to minimize the oil receiving space that had to be provided inside the compressor in order to lubricate the compression mechanism of the compressor, thereby reducing the size of the compressor.

According to the present invention, by including a fixing structure for stably fixing the compression unit, it is possible to minimize the transmission of vibration generated in the compressor to the accumulator, and to prevent the compression unit from being deformed from external impact. .

1 is a longitudinal sectional view showing a configuration of a rotary compressor according to a first embodiment of the present invention.
2 is a perspective view of an accumulator according to the first embodiment of the present invention.
3 is a cross-sectional view of the accumulator of FIG.
4 is a view showing a fixing structure of a compression unit according to the first embodiment of the present invention.
5 is a perspective view of a connecting bracket according to a first embodiment of the present invention.
6 is a view schematically showing a fixing structure of a compression unit according to the first embodiment of the present invention.
7 is a graph showing the noise that is changed in the operating region of the rotary compressor.

The present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, only this embodiment to make the disclosure of the present invention complete and to those skilled in the art to fully understand the scope of the invention It is provided to inform you.

The compressor described below, for example, discloses a structure for a rotary compressor. However, the accumulator of the present invention is not limited to a rotary compressor and is applicable to various compressors such as a reciprocating compressor or a scroll compressor.

1 is a longitudinal sectional view showing a configuration of a rotary compressor according to a first embodiment of the present invention.

Referring to FIG. 1, the compressor 1 may be a rotary compressor.

Specifically, the rotary compressor 1 includes a case 1a forming an inner space, a top cover 1b coupled to an upper side of the case 1a, and a bottom cover coupled to a lower side of the case 1a. (1c) may be included.

The case 1a may be formed in a cylindrical shape in which an upper portion and a lower portion are open. In addition, the case 1a may be provided with a guide part 1e to which the refrigerant pipe 14 of the accumulator is connected.

The guide portion 1e allows the refrigerant pipe 14 of the accumulator to be inserted into the guide portion 1e, and provides the refrigerant from the accumulator to the suction portion of the rotary compressor 1. To help.

The top cover 1b is coupled to cover the open top surface of the case 1a.

The top cover 1b may be provided with a discharge tube 1f through which the refrigerant compressed in the cylinder 6 of the rotary compressor 1 is discharged. For example, the discharge pipe 1f may penetrate the center of the top cover 1b.

The motor is provided inside the case 1a. The motor may include a stator (2, stator) for generating a magnetic force by the applied power, and a compression mechanism (3) for compressing the refrigerant by the induced electromotive force generated through interaction with the stator (2). .

The compression mechanism part 3 may include a rotor 3a, which is provided inside the stator 2 and rotates. The stator 2 and the rotor 3a can be understood as components of the motor. In addition, the compression mechanism 3 may further include a rotation shaft 4 coupled to the rotor 3a and rotated according to the rotation of the rotor 3a.

In addition, the rotary compressor 1 may further include a roller 5 which is eccentrically coupled to the lower portion of the rotary shaft 4 and rotates with a constant eccentric trajectory according to the rotation of the rotary shaft 4.

In addition, the rotary compressor 1 may further include a cylinder 6 in which the roller 5 is accommodated.

The cylinder 6 may form a suction part for introducing a refrigerant and a compression space in which the refrigerant sucked by the suction part is compressed. The suction part of the cylinder 6 may be connected to the refrigerant pipe 14 of the accumulator to receive the refrigerant.

In addition, the rotary compressor 1 may further include a vane (vane) separating the suction chamber and the compression chamber while reciprocating in the slot formed in the cylinder 6 as the roller 5 rotates. have.

In addition, the rotary compressor 1 includes a discharge unit (not shown) for discharging the compressed refrigerant in the compression space of the cylinder 6, and a muffler 9 provided at an upper portion of the discharge unit to reduce the discharge noise of the refrigerant. It may further include.

The discharge portion is a passage through which the refrigerant compressed in the compression chamber is discharged when the pressure in the compression chamber of the cylinder 6 becomes equal to or higher than the discharge pressure. One side of the discharge unit may be provided with a discharge valve for controlling the discharge of the compressed refrigerant.

The discharge valve may be arranged in the main bearing 7 located above the cylinder 6. Accordingly, the refrigerant discharged through the discharge unit may flow into the muffler 9 located above the main bearing 7.

In addition, the rotary compressor 1 may further include a main bearing 7 and a sub bearing 8 provided on the upper and lower portions of the cylinder 6 to support the cylinder 6.

The main bearing 7 and the sub bearing 8 are provided in a substantially disc shape, and can support the upper side and the lower side of the cylinder 6, respectively.

The main bearing 7 is provided above the cylinder 6 to perform a function of dispersing the compressive force of the refrigerant generated in the cylinder 6 or the force generated by the motor to the case 1a. Can be.

In addition, the sub bearing 8 is provided below the cylinder 6 to distribute the compressive force of the refrigerant generated in the cylinder 6 or the force generated by the motor to the case 1a. Can be done.

The operation according to the compressor configuration will be briefly described.

When the rotating shaft 4 is rotated, the roller 5 rotates and revolves along the inner circumferential surface of the cylinder 6 while drawing a constant eccentric trajectory. The refrigerant stored in the accumulator passes through the refrigerant pipe 14 into the compression chamber of the cylinder 6, and the refrigerant is compressed in the compression chamber while the roller 5 is rotated.

Subsequently, when the pressure in the compression chamber is equal to or greater than the discharge pressure, the discharge valve provided on one side of the discharge part is opened, and the compressed refrigerant is discharged from the discharge part through the open discharge valve. The discharged compressed refrigerant is discharged to a refrigeration cycle device (not shown) through the discharge pipe 1f and then is repeated in a series of processes that are sucked back into the compression chamber of the cylinder 6 through the accumulator. .

Hereinafter, an accumulator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of an accumulator according to a first exemplary embodiment of the present invention, and FIG. 3 is a cross-sectional view of the accumulator of FIG. 2.

2 and 3, an accumulator 10 according to an embodiment of the present invention is connected to the rotary compressor 1. The accumulator 10 serves to separate the gaseous refrigerant from the refrigerant and supply the gaseous refrigerant separated into the compression space of the cylinder 6. In addition, the liquid refrigerant separated through the accumulator 10 may be accommodated in the internal space of the accumulator 10.

Ideally, the refrigerant supplied to the compressor should be a low-temperature, low-pressure gas phase refrigerant, but in reality, a low temperature low-pressure liquid refrigerant is also partially mixed in due to various factors. If such liquid refrigerant is directly introduced into the compressor, it may cause damage to the compressor, so it is necessary to separate the liquid refrigerant from the accumulator.

The accumulator 10 of the present invention includes an accumulator main body 11 forming an inner space, an inflow pipe 13 coupled to one side of the accumulator main body 11, into which a refrigerant flows, and It may include a refrigerant pipe (14) coupled to the other side of the accumulator body (11).

The accumulator main body 11 includes a housing.

The housing provides a space in which the refrigerant is stored. The liquid refrigerant and the gaseous refrigerant may be stored in the housing. The housing may be formed in a cylindrical shape as a whole. The internal space formed by the housing may be divided into a plurality of spaces by the vibration preventing plate 114 to be described later.

In detail, the housing includes a body 111 formed in a cylindrical shape, an upper cap 112 disposed on the upper portion of the body 111, and a lower cap 113 disposed on the lower portion of the body 111. can do. In this embodiment, the body 111, the upper cap 112 and the lower cap 113 is described as being integrally formed, the upper cap 112 and the lower cap 113 is It may be formed detachably with respect to the body 111.

The upper cap 112 and the lower cap 113 may be formed in a hemispherical or dome shape. In the present embodiment, the lower cap 113 is formed in a container shape, the oil and liquid refrigerant may be accommodated in the inner space. A portion of the lower cap 113 may be recessed inward, and the refrigerant pipe 14 may be inserted into the recessed surface.

Specifically, as shown in FIGS. 2 and 3, a portion of the lower cap 113 may include a recess 113a recessed from the outside to the inside.

The depression 113a may include a stepped surface 113b. The stepped surface 113b may be formed to be spaced apart from the outer circumferential surface of the lower cap 113 by a predetermined distance in the center direction of the lower cap 113.

In addition, the depression 113a may further include an extension surface 113c. The extension surface 113c may extend from an upper end of the stepped surface 113b to extend in a direction away from the center of the lower cap 113. The extended surface 113c may be smoothly connected to the stepped surface 113b.

That is, in the present invention, the work capable of joining the refrigerant pipe 14 to the rotary compressor 1 not only by the stepped surface 113b but also by an extended surface 113c extending from an upper end of the stepped surface 113b. Space may be provided.

The accumulator body 11 may further include a screen member 115. The screen member 115 may be understood as a member for separating the gaseous refrigerant and the liquid refrigerant introduced into the housing through the inflow pipe 13. In addition, the screen member 115 may be understood as a member for separating oil contained in the refrigerant sucked through the inflow pipe 13.

In this embodiment, the screen member 115 may be disposed above the body 111. Specifically, the screen member 115 is provided between the inflow pipe 13 and the gas-liquid separation pipe 141 which will be described later, so that foreign matter and liquid refrigerant contained in the refrigerant passing through the inflow pipe 13 are separated. Can be.

The screen member 115 may be formed in a disk shape as a whole and may be fixed to an inner circumferential surface of the body 111. In addition, the screen member 115 may be provided with a refrigerant passage hole (not shown) for sending the filtered liquid refrigerant downward. A plurality of refrigerant passage holes (not shown) may be formed. The plurality of refrigerant passage holes (not shown) may be spaced apart at regular intervals.

The accumulator body 11 may further include a vibration preventing plate 114. The vibration preventing plate 114 may be provided to prevent the external shape of the accumulator body 11 having an internal space from being deformed. In addition, the plurality of vibration preventing plates 114 may serve to support the gas-liquid separation tube 141 located inside the housing. The anti-vibration plate 114 may be changed in the number of the anti-vibration plate 114 is provided according to the length of the accumulator body 11 in the vertical direction. That is, the vibration preventing plate 114 may be provided at least one.

In this embodiment, the anti-vibration plate 114 may include a first anti-vibration plate 114a and a second anti-vibration plate 114b. The plurality of anti-vibration plates 114 may be coupled to one upper portion of the gas-liquid separator tube 141 and the other lower portion of the gas-liquid separator tube 141 to fix the housing to an inner circumferential surface thereof. In this case, the plurality of vibration preventing plates 114 may divide the internal space of the housing into a first space S1, a second space S2, and a third space S3.

The first space S1 is formed between the first vibration preventing plate 114a and the screen member 115, and may be understood as a space in which a gaseous refrigerant is sucked into the gas-liquid separation tube 141. The second space S2 is formed between the first anti-vibration plate 114a and the second anti-vibration plate 114b and can be understood as a space in which the liquid refrigerant falls downward or the liquid refrigerant vaporizes. have. The third space S3 is formed between the second anti-vibration plate 114b and the lower cap 113 and may be understood as a space in which oil is stored. In this case, the third space S3 may be referred to as an "oil storage space".

An insertion hole into which the gas-liquid separation pipe 141 may be inserted may be formed in the plurality of vibration preventing plates 114. Therefore, the plurality of vibration preventing plates 114 may be fixed to the inner circumferential surface of the housing while being inserted into the gas-liquid separator tube 141.

The plurality of vibration preventing plates 114 may be formed in a disk shape as a whole and may be fixed to an inner circumferential surface of the body 111. In addition, a plurality of refrigerant passage holes (not shown) may be formed in the plurality of anti-vibration plates 114 to send the liquid refrigerant falling from the screen member 115 to the lower side. A plurality of refrigerant passage holes (not shown) may be formed. The plurality of refrigerant passage holes (not shown) may be spaced apart from each other at regular intervals.

The refrigerant pipe 14 of the accumulator 10 may be understood as a pipe that delivers the gaseous phase refrigerant inside the accumulator body 11 to the rotary compressor 1. The refrigerant pipe 14 may be disposed in the accumulator body 11. A portion of the refrigerant pipe 14 may protrude outward through the accumulator body 11. An inflow end of the refrigerant pipe 14 may be disposed in the accumulator body 11. For example, an inflow end of the refrigerant pipe 14 may be located on the first space S1 of the accumulator body 11. The discharge end of the refrigerant pipe 14 may be connected to the inlet end of the guide part 1e.

In detail, the refrigerant pipe 14 may include a gas-liquid separation pipe 141. The gas-liquid separator tube 141 may extend a predetermined length in the longitudinal direction of the housing. The gas-liquid separator tube 141 may be understood as a pipe through which the gaseous phase refrigerant filtered through the screen member 115 passes. The gas-liquid separator tube 141 may be vertically positioned at the center of the body 111. That is, the central axis of the gas-liquid separator tube 141 may coincide with the center of the body 111. In addition, the central axis of the gas-liquid separation pipe 141 may coincide with the central axis of the inflow pipe 13.

The gas-liquid separator tube 141 is disposed below the screen member 115 and may be formed of a straight pipe portion that is elongated in a vertical direction. The inflow end of the gas-liquid separation tube 141 may be disposed below the screen member 115. The discharge end of the gas-liquid separation pipe 141 may be connected to the inlet end of the bent pipe 14 to be described later.

The refrigerant pipe 14 may further include a bending pipe 142.

The bending pipe 142 may be disposed in the third space S3 to guide the flow direction of the gaseous refrigerant so that the refrigerant sucked from the gas-liquid separator tube 141 flows toward the rotary compressor 1. have. The bent pipe 142 may be bent toward the outer circumferential surface of the accumulator body 11 from the center of the accumulator body 11. Alternatively, the bent tube 142 may extend from the gas-liquid separator tube 141 to be bent toward the outer circumferential surface of the accumulator body 110. In addition, the inflow end of the bending pipe 142 may be connected to the discharge end of the gas-liquid separation pipe 141.

The refrigerant pipe 14 may further include an extension pipe 143.

The extension tube 143 may extend from the bending tube 142. In addition, the extension pipe 143 may protrude outward through a portion of the accumulator body 11. The inlet end of the extension tube 143 may be connected to the discharge end of the bending tube 142. In addition, the discharge end of the extension pipe 143 may be connected to the inlet end of the guide portion (1e).

The bent tube 142 and the extension tube 143 may be integrally formed or separated from each other. The bent pipe 142, the extension pipe 143, and the gas-liquid separation pipe 141 may be integrally formed or may be provided to be separated from each other. In the present embodiment, the gas-liquid separator tube 141 and the bending tube 142 may be understood as a refrigerant pipe 14 disposed inside the housing. In this case, the refrigerant pipe 14 located inside the housing may be referred to as a “first refrigerant pipe”. In addition, the extension pipe 143 may be understood as a refrigerant pipe 14 disposed outside the housing. In this case, the refrigerant pipe 14 located outside the housing may be referred to as a “second refrigerant pipe”.

The refrigerant pipe 14 may further include an oil suction pipe 15.

The oil suction pipe 15 may be provided in a pipe or tube shape of which the inside is hollow. One end of the oil suction pipe 15 may be connected to the bent pipe 142 of the refrigerant pipe 14. The other end of the oil suction pipe 15 may suck oil stored in the third space S3. At this time, the bent pipe 142 may be formed with an insertion portion 149 for inserting one end of the oil suction pipe 15.

One end of the oil suction pipe 15 is connected to and fixed to the insertion part 149, and the oil suction pipe 15 may communicate with the bent pipe 142. The other end of the oil suction pipe 15 may extend in a direction toward the oil stored in the third space S3. The other end of the oil suction pipe 15 may be arranged to be immersed in the stored oil. In the present embodiment, the other end of the oil suction pipe 15 is shown to extend downward.

That is, the oil suction pipe 15 receives oil stored in the third space S3 with suction force generated by the flow of the gaseous refrigerant flowing through the refrigerant pipe 14 and flowing toward the rotary compressor 1. Inhalation is possible. The oil sucked in the third space S3 may flow through the refrigerant pipe 14 to the rotary compressor 1, and may perform a lubrication function of the rotary compressor 1.

Meanwhile, the accumulator main body 11 may further include a lower fixing part 119.

The lower fixing part 119 may be formed in the lower cap 113 of the housing. The lower fixing part 119 may extend downward from the lower cap 113. The housing may be fixed to the support plate 17 to be described later through the lower fixing part 119. In this embodiment, the lower fixing part 119 may protrude downward from the center of the lower cap 113. In addition, the lower fixing part 119 may have a fastening hole 119a to which the fastening means is fastened.

Figure 4 is a view showing a fixing structure of the compression unit according to the first embodiment of the present invention, Figure 5 is a perspective view of a connecting bracket according to a first embodiment of the present invention, Figure 6 is a first embodiment of the present invention Is a view schematically showing a fixing structure of a compression unit according to the present invention.

4 to 6, the compression unit according to the present embodiment may include a rotary compressor 1 and an accumulator 10. In addition, the rotary compressor 1 may further include a support plate 17.

The support plate 17 may be disposed below the rotary compressor 1. The support plate 17 may support the rotary compressor 1. For example, the support plate 17 may allow the rotary compressor 1 to be fixed at a position spaced apart from the bottom surface of the electric compartment where the rotary compressor 1 is installed. At this time, a dustproof material or the like is inserted between the support plate 17 and the bottom surface of the electrical compartment, thereby suppressing transmission of the vibration generated by the rotary compressor 1 to the bottom surface of the electrical compartment.

The support plate 17 may include a support 171 and a support 172.

The rotary compressor 1 may be seated on the support part 171. At least a portion of the support part 171 may be recessed so that the lower portion of the rotary compressor 1 is seated. The lower part of the rotary compressor 1 may be inserted into a recessed portion and supported by the support part 171.

The support part 172 may be formed to extend from the support part 171. The support part 172 may be defective by the bottom surface and the fastening means of the electrical compartment. In the present embodiment, the support part 172 may be spaced at 120 degree intervals, and three support parts 172 may be provided. The dustproof material is disposed between the support part 172 and the bottom surface of the electric compartment, and the vibration generated from the support plate 17 can be suppressed.

Meanwhile, the accumulator 10 may be fixed to the rotary compressor 1.

In detail, the accumulator 10 may be fixed to the outside of the case 1a of the rotary compressor 1 by the upper fixing part 118. The upper fixing part 118 may be disposed above the rotary compressor 1 to fix the upper portion of the accumulator 10. For example, one side of the upper fixing part 118 may be fixed to the outer surface of the rotary compressor 1, and the other side of the upper fixing part 118 may be fixed to the accumulator 10. In addition, the upper fixing part 118 may be provided in the shape of a strap or a band, so that the accumulator 10 may be easily fixed to the rotary compressor 1.

In addition, the accumulator 10 may be fixed to the support plate 17 by a connecting bracket 19.

In detail, the lower fixing part 119 of the accumulator 10 and the supporting part 172 of the supporting plate 17 may be fixed to each other by the connecting bracket 19. The connection bracket 19 is disposed between the lower fixing part 119 and the support part 172, and the support part 172, the lower fixing part 119, and the connection bracket 19 are fastened to each other. It can be fixed to each other by means.

In more detail, the connection bracket 19 may include a bracket body 191, a first fixing surface 192, a second fixing surface 193, and a reinforcing rib 194.

The bracket body 191 may form a body of the connection bracket 19. The bracket body 191 may be formed in a size corresponding to between the lower fixing part 119 and the support part 172 of the support plate 17. The bracket body 191 may be formed in a substantially plate shape.

The first fixing surface 192 may be in contact with the support part 172 and may be fixed to the support part 172 by fastening means. The second fixing surface 193 may be in contact with the lower fixing portion 119, and the lower fixing portion 119 may be fixed to the second fixing surface 193 by fastening means. Fastening holes 192a and 193a to which fastening means are fastened are formed in the first fixing surface 192 and the second fixing surface 193. The first fixing surface 192 and the second fixing surface 193 may be formed by extending ends of the bracket body 191. In this embodiment, the first fixing surface 192 may be provided in a plane facing one side of the support part 172. The second fixing surface 193 may be provided in a plane facing one side of the lower fixing part 119. The first fixing surface 192 may be inclined from the bracket body 191.

The reinforcing rib 194 may be provided to reinforce the strength of the bracket body 191. In addition, the reinforcing rib 194 is connected to the first fixing surface 192 and the second fixing surface 193 to reinforce the strength of the first fixing surface 192 and the second fixing surface 193. can do.

That is, the lower portion of the accumulator 10 may be fixed to the support plate 17 by the connecting bracket 19.

According to this configuration, since the upper and lower portions of the accumulator 10 can be stably fixed, the rigidity of the accumulator 10 can be increased. In addition, the refrigerant pipe 14 disposed between the accumulator 10 and the rotary compressor 1 and relatively vulnerable to external shock can be prevented from being deformed. In addition, the weight of the oil stored in the accumulator 10 can be stably supported.

7 is a graph showing the noise that is changed in the operating region of the rotary compressor.

Referring to FIG. 7, in the rotary compressor according to the related art, the upper part of the accumulator is fixed to the case of the rotary compressor, and the lower part of the accumulator is fixed to the case of the rotary compressor by a connecting pipe, so that the lower part of the accumulator Was formed into a fragile structure. In addition, when vibration occurs in the rotary compressor according to the prior art, a problem may occur that the noise is increased by the vibration of the accumulator that is not stably fixed.

On the other hand, in the rotary compressor 1 according to the present embodiment, the upper part of the accumulator 10 is fixed to the case of the rotary compressor 1, and the lower part of the accumulator 10 is attached to the support plate 17. It is fixed and the refrigerant pipe 14 can be prevented from being deformed by the impact.

As a result, the rotary compressor according to the present embodiment can obtain an effect of reducing noise compared to the rotary compressor of the prior art.

1: rotary compressor 10: accumulator
13: Inlet piping 14: Refrigerant piping
15: oil suction line 17: support plate
19: Connecting bracket

Claims (13)

A housing forming a space in which the refrigerant is stored;
An inlet pipe coupled to the housing and guiding the inflow of the refrigerant;
A first refrigerant pipe disposed inside the housing, through which the gaseous refrigerant separated from the refrigerant flows;
A second refrigerant pipe connected to the first refrigerant pipe and extending outwardly from the housing and connected to the compressor; And
An oil suction pipe connected to the first refrigerant pipe and allowing oil existing in the housing to flow into the first refrigerant pipe;
In the first refrigerant pipe,
A gas-liquid separation tube provided with an inflow end portion through which the gaseous refrigerant is introduced, and extending in a vertical direction; And
One end is connected to the gas-liquid separation tube, and a bent tube bent at least partly so that the other end is connected to the second refrigerant pipe,
And a part of the oil suction pipe is connected to the bent pipe so that the oil is supplied to the gaseous refrigerant which is changed in flow direction by the bent pipe. The method of claim 1,
In the inner lower portion of the housing, an oil storage space for storing the oil is formed,
The first refrigerant pipe is an accumulator disposed above the oil storage space. The method of claim 2,
The remaining portion of the oil suction pipe extends downwardly from the bent pipe toward the oil storage space. The method of claim 1,
An accumulator including an anti-vibration plate connected to an inner surface of the housing and an outer surface of the gas-liquid separator to support the gas-liquid separator. The method of claim 1,
An accumulator including a screen member positioned above the gas-liquid separation tube inside the housing. The method of claim 1,
The bent tube is formed with an insertion portion, the accumulator extends into the inside of the bent tube through a portion of the oil suction tube. The method of claim 2,
The housing includes a depression in which a portion of the housing is recessed from the outside to the inside,
The second refrigerant pipe is accumulator connected to the depression. The method of claim 1,
The first and second refrigerant pipes are integrally formed or provided to be separated from each other. An accumulator according to any one of claims 1 to 8; And
Compression unit including a compressor connected to the accumulator. The method of claim 9,
The accumulator includes a lower fixing part protruding downward from the bottom of the housing and to which the fastening member is coupled. The method of claim 10,
The compressor includes a support plate for supporting the compressor,
Compression unit disposed between the lower fixing portion and the support plate, the connection unit for connecting the lower fixing portion and the support plate is provided. The method of claim 11,
In the connecting bracket,
Bracket body;
A first fixing surface formed by bending at one side of the bracket body; And
A second fixing surface formed by bending at the other side of the bracket body,
The first fixing surface is disposed inclined from the bracket body and in contact with the support plate,
The second fixing surface is in contact with the lower fixing portion. The method of claim 12,
Compression unit further includes a reinforcing rib in the bracket body.

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