KR102591416B1 - Accumulator for compressor and compressor with this - Google Patents

Abstract

The accumulator for a compressor according to the present invention and the compressor equipped with the same are disposed outside the shell of the compressor and have a case provided with a refrigerant receiving space, one end of which is connected to the outlet side of the evaporator, and the other end of which is connected to the refrigerant receiving space of the case. It includes a refrigerant connection pipe that communicates, one end of which communicates with the refrigerant receiving space of the case, and the other end of which communicates with a suction side of the compressor, wherein the refrigerant suction pipe forms the refrigerant receiving space. It can be fixed to the bottom and top of the case, respectively. Through this, the refrigerant suction pipe can be fixed to the accumulator case without a separate pipe holder, reducing the vibration of the accumulator and lowering manufacturing costs.

Description

Accumulator for compressor and compressor equipped with same {ACCUMULATOR FOR COMPRESSOR AND COMPRESSOR WITH THIS}

The present invention relates to an accumulator for a compressor and a compressor in which the accumulator is provided outside the shell.

In general, compressors can be divided into low-pressure compressors and high-pressure compressors depending on the refrigerant connection relationship between the refrigerant refrigerant suction pipe and the compression section. In the low-pressure compressor, the refrigerant refrigerant suction pipe communicates with the inner space of the shell and is indirectly connected to the compression section, while in the high-pressure compressor, the refrigerant refrigerant suction pipe penetrates the shell and is directly connected to the compression section.

In a low-pressure compressor, the liquid refrigerant and the gaseous refrigerant can be separated in the inner space of the shell as the refrigerant passing through the refrigerant intake pipe passes through the inner space of the shell. Accordingly, the low-pressure compressor may not be equipped with a separate accumulator on the upstream side of the compression section.

In a high-pressure compressor, the refrigerant passing through the refrigerant intake pipe is supplied directly to the compression section, so the liquid refrigerant may flow into the compression section along with the gas refrigerant. Accordingly, the high-pressure compressor is equipped with a separate accumulator on the upstream side of the compression section to prevent liquid refrigerant from flowing into the compression section.

Typically, the accumulator is arranged eccentrically on one side of the compressor, and the upper part forming the inlet is equipped with a refrigerant refrigerant connection pipe and connected to the outlet of the evaporator and the refrigerant pipe, and the lower part forming the outlet is provided with a refrigerant refrigerant flow pipe to connect the compressor and the refrigerant refrigerant. It is fixed with a suction pipe. And the middle of the accumulator is fixed to the compressor by a fixing bracket surrounding the accumulator.

This accumulator can be formed so that the refrigerant refrigerant connection pipe and the refrigerant refrigerant flow pipe are located on the same axis. However, if the refrigerant refrigerant connection pipe and the refrigerant refrigerant flow pipe are located on the same axis, the gas refrigerant and liquid refrigerant passing through the refrigerant connection pipe may flow into the refrigerant flow pipe without being sufficiently separated.

Patent Document 1 (Japanese Patent Publication No. S61-197968) discloses an example in which the refrigerant refrigerant connection pipe and the refrigerant refrigerant flow pipe are located on the same axis, but a blocking piece is provided between the refrigerant refrigerant connection pipe and the refrigerant refrigerant flow pipe. . This can block liquid refrigerant from flowing directly into the refrigerant flow pipe, but it may be difficult to expect long-term effects because the blocking plate is damaged by compressor vibration.

Patent Document 2 (Japanese Patent Publication No. 2013-119817) discloses an example in which the inlet of the refrigerant refrigerant flow pipe is bent so as not to face the refrigerant connection pipe. Additionally, in Patent Document 2, the refrigerant refrigerant flow pipe is welded and fixed to the body of the accumulator. This blocks the liquid refrigerant from flowing directly into the refrigerant refrigerant channel tube, but also allows the refrigerant refrigerant channel tube to be fixed to the body of the accumulator, thereby canceling out the vibration of the refrigerant refrigerant channel tube. However, in Patent Document 2, one side of the outer circumferential surface of the refrigerant refrigerant flow pipe is welded to the inner circumferential surface of the accumulator, so the welding area is limited, and as a result, the refrigerant refrigerant flow pipe may be removed from the accumulator, increasing vibration and noise.

Patent Document 3 (Japanese Patent Publication No. 2011-169183) states that the refrigerant refrigerant flow pipe is arranged at a predetermined interval on the same axis as the refrigerant refrigerant connection pipe, and a screen is installed between the refrigerant refrigerant connection pipes. An example is disclosed. This allows the refrigerant passing through the refrigerant connection pipe to be separated into gas refrigerant and liquid refrigerant by the screen, thereby preventing the liquid refrigerant from flowing into the refrigerant refrigerant flow pipe.

Additionally, Patent Document 3 discloses an example in which the refrigerant refrigerant flow pipe is fixed to the body of the accumulator by a separate pipe holder. This allows the refrigerant refrigerant flow pipe to be fixed by the pipe holder to suppress vibration and noise, but manufacturing costs may increase as a separate pipe holder is added.

Patent Documents 1 to 3 state that, as the refrigerant refrigerant connector is located on the axial center line of the accumulator, it moves away from the axial center of the compressor, and as a result, the vibration transmitted from the compressor is excited, causing vibration of the compressor including the accumulator as a whole. It can increase.

In addition, Patent Documents 1 to 3 state that the refrigerant refrigerant flow pipe and the refrigerant connection pipe are arranged on the same axis or the refrigerant refrigerant flow pipe is placed lower than the refrigerant connection pipe, so there is a possibility that liquid refrigerant will flow into the compressor. high. For this reason, these patent documents may require a screen or similar screen member to separate the liquid refrigerant from the refrigerant that has passed through the refrigerant connection pipe. In addition, the noise of the compressor, including the accumulator, may increase as the refrigerant flowing from the refrigerant connection pipe into the refrigerant receiving space of the accumulator is quickly sucked from the refrigerant connection pipe into the adjacent refrigerant refrigerant flow pipe.

Japanese Patent Publication No. S61-197968 (Publication date: September 2, 1986) Japanese Patent Publication No. 2013-119817 (Publication date: 2013.6.17.) Japanese Patent Publication No. 2011-169183 (Publication date: 2011.09.01.)

The purpose of the present invention is to provide an accumulator for a compressor that can reduce vibration and noise of an accumulator connected to one side of the compressor shell, and a compressor equipped with the same.

Furthermore, the purpose of the present invention is to provide an accumulator for a compressor that can stably fix a pipe inserted into the refrigerant receiving space of the accumulator even without a pipe holder, and a compressor equipped with the same.

Furthermore, the purpose of the present invention is to provide an accumulator for a compressor and a compressor equipped with the same, which can reduce noise in the accumulator when the refrigerant passes through the accumulator and moves from the evaporator to the compressor.

Another object of the present invention is to provide an accumulator for a compressor that can effectively separate liquid refrigerant from the refrigerant passing through the accumulator and a compressor equipped with the same.

Furthermore, the purpose of the present invention is to provide an accumulator for a compressor capable of delaying the flow rate of refrigerant passing through the accumulator and a compressor equipped with the same.

Furthermore, the purpose of the present invention is to provide an accumulator for a compressor that can increase the separation effect of liquid refrigerant by allowing the refrigerant passing through the accumulator to flow in a spiral shape in the refrigerant receiving space of the accumulator, and a compressor equipped with the same.

In order to achieve the object of the present invention, an accumulator for a compressor including a case, a refrigerant connection pipe, and a refrigerant suction pipe may be provided. The case is disposed outside the shell of the compressor and may be provided with a refrigerant receiving space. One end of the refrigerant connecting pipe may extend outside the refrigerant receiving space, and the other end may be in communication with the refrigerant receiving space. One end of the refrigerant suction pipe may communicate with the refrigerant receiving space of the case, and the other end may communicate with the suction side of the compressor. The refrigerant suction pipe may be fixed to the lower and upper surfaces of the case forming the refrigerant receiving space, respectively. Through this, the refrigerant suction pipe can be fixed to the accumulator case without a separate pipe holder, reducing vibration of the accumulator and lowering manufacturing costs.

For example, a pipe fixing portion may be formed on the upper surface of the case so that one end of the refrigerant suction pipe is inserted and fixed. Through this, the top of the refrigerant suction pipe can be firmly fixed.

As another example, the pipe fixing portion may be depressed in a direction away from the refrigerant receiving space along the longitudinal direction of the case so that one end of the refrigerant suction pipe can be inserted. Through this, the refrigerant suction pipe can be easily welded and joined to the case.

As another example, the pipe fixing part may protrude toward the refrigerant receiving space along the longitudinal direction of the case and be inserted into one end of the refrigerant suction pipe. Through this, the refrigerant suction pipe can be stably fixed by forming a long pipe fixing part.

As another example, the pipe fixing part may be formed of a pipe hole penetrating in the longitudinal direction of the case so that the refrigerant suction pipe penetrates the case and is fixed. Through this, the degree of freedom in manufacturing and assembling the parts that make up the case can be increased.

As another example, the pipe fixing part may be formed on the axial center line of the case. Through this, vibration transmitted from the compressor through the refrigerant suction pipe can be minimized.

For example, the refrigerant suction pipe may be arranged to overlap the refrigerant connection pipe in the longitudinal direction of the case. Through this, both ends of the refrigerant suction pipe can be fixed on both sides of the longitudinal direction of the case, while at the same time expanding the distance between the outlet of the refrigerant connecting pipe and the inlet of the refrigerant suction pipe.

For example, the refrigerant suction pipe may be disposed on the axial center line of the case, and the refrigerant connecting pipe may be disposed eccentrically with respect to the axial center of the case. Through this, the refrigerant suction pipe can be fixed to the case while the refrigerant connection pipe can penetrate the upper surface of the case and communicate with the refrigerant receiving space.

As another example, the refrigerant connecting pipe may be arranged closer to the axial center of the compressor than the refrigerant suction pipe. Through this, vibration at the area where the case and the refrigerant connecting pipe are joined can be reduced.

For example, the other end of the refrigerant connecting pipe may be open toward the refrigerant receiving space, and the refrigerant suction pipe may have at least one refrigerant through hole communicating with the refrigerant receiving space. The refrigerant through hole may be formed to be higher than or equal to the other end of the refrigerant connection pipe based on the longitudinal direction of the case. Through this, the separation effect of the gas refrigerant and the liquid refrigerant can be increased by allowing the refrigerant to flow for a long time or a long distance in the refrigerant receiving space.

As another example, the refrigerant through hole may be opened in a direction that intersects the direction in which the refrigerant suction pipe faces the refrigerant connection pipe. Through this, the distance between the refrigerant connection pipe and the refrigerant suction pipe can be further expanded to ensure a longer flow time and flow distance of the refrigerant.

For example, a screen member that filters foreign substances flowing into the refrigerant receiving space may be coupled to the other end of the refrigerant connecting pipe. Through this, the reliability of the compressor can be improved by preventing oil or foreign substances from flowing into the compression chamber.

As another example, the screen member is made of a mesh screen, and the mesh screen may be formed or inserted into the other end of the refrigerant connecting pipe. The refrigerant connecting pipe may be provided with a screen support portion that supports the screen member. Through this, the refrigerant can quickly flow toward the bottom of the refrigerant receiving space through the refrigerant connection pipe.

As another example, the refrigerant connecting pipe may include: a first guide extending in the longitudinal direction of the case in the refrigerant receiving space; And it may include a second guide part bent in one direction or two directions and extending from the first guide part. The screen member may be inserted into the first guide part and supported at a position where the second guide part is bent in the first guide part. Through this, as the refrigerant flows toward the side of the refrigerant receiving space through the refrigerant connection pipe, the liquid refrigerant and the gas refrigerant can be more effectively separated by the cyclone effect. In addition, the screen member can be stably supported without adding a separate support member, thereby lowering manufacturing costs and increasing reliability.

For example, the case includes a body whose lower end is covered and through which the refrigerant suction pipe is coupled, and whose upper end is open; And it may include an upper cap that covers the top of the body and through which the refrigerant connecting pipe passes. A pipe fixing part is formed in the upper cap so that one end of the refrigerant suction pipe is inserted and fixed, and a through hole may be formed on one side of the pipe fixing part to allow the refrigerant connecting pipe to pass through and be coupled thereto. Through this, both ends of the refrigerant suction pipe can be stably fixed to the case while excluding the pipe holder.

As another example, the pipe fixing part may be formed at the center of the upper cap, and the through hole may be formed eccentrically from the center of the upper cap toward the axial center of the compressor. Through this, vibration through the refrigerant connecting pipe can be lowered by adjacent to the compressor.

As another example, the pipe fixing portion may be formed to be recessed from the inner surface of the upper cap forming the refrigerant receiving space toward the outer surface of the upper cap. One end of the refrigerant suction pipe may be inserted into and fixed to the pipe fixing part. Through this, it is possible to lower the vibration of the accumulator by fixing the refrigerant suction pipe to the case without providing a separate pipe holder.

As another example, the through hole may be formed at the center of the upper cap, and the pipe fixing portion may be formed eccentrically from the center of the upper cap toward the axial center of the compressor or away from the axial center of the compressor. Through this, the refrigerant suction pipe can be adjacent to the compressor to reduce vibration through the refrigerant suction pipe.

For example, the refrigerant suction pipe may include a refrigerant flow pipe accommodated in the refrigerant receiving space of the case; And it may include a refrigerant suction pipe, one end of which communicates with the refrigerant flow pipe, and the other end of which communicates with the suction side of the compressor. The refrigerant flow pipe may have both longitudinal ends fixed to both longitudinal sides of the case. Through this, it is possible to reduce vibration through the refrigerant suction piping and increase freedom of material selection for the connection member between the compressor and accumulator.

For example, the refrigerant suction pipe may be formed as a single pipe, with one side fixed to the shell of the compressor and the other side fixed to both sides of the case in the longitudinal direction. This reduces manufacturing costs by reducing the number of parts, and allows the refrigerant suction piping to be easily and stably combined.

Additionally, in order to achieve the purpose of the present invention, a compressor including a shell, a transmission unit, a compression unit, and an accumulator may be provided. The interior space of the shell may be sealed. The electric unit may be provided in the inner space of the shell. The compression unit is provided in the internal space of the shell and driven by the electric unit, and can compress the refrigerant and discharge it into the internal space of the shell. The accumulator may be disposed outside the shell, supported on the shell, and connected to the compression unit through the shell. Through this, most of the liquid refrigerant is separated from the refrigerant sucked from the evaporator to the compressor, and mainly gas refrigerant can be sucked into the compressor.

Here, the accumulator may include a case, a refrigerant connection pipe, and a refrigerant suction pipe. The case may be provided with a refrigerant receiving space. One end of the refrigerant connecting pipe may extend outside the refrigerant receiving space, and the other end may be in communication with the refrigerant receiving space of the case. One end of the refrigerant suction pipe may communicate with the refrigerant receiving space of the case, and the other end may communicate with the suction side of the compressor. Through this, the refrigerant sucked into the refrigerant receiving space through the refrigerant connecting pipe can circulate through the refrigerant receiving space and then flow into the refrigerant suction pipe.

Additionally, at least a portion of the refrigerant connection pipe and the refrigerant suction pipe may overlap in the axial direction and be arranged parallel to each other. Through this, the outlet of the refrigerant connecting pipe and the inlet of the refrigerant suction pipe can be placed far apart.

Additionally, the refrigerant suction pipe may be fixed to the lower and upper surfaces of the case forming the refrigerant receiving space, respectively. Through this, the refrigerant suction pipe can be firmly fixed to the accumulator case without a separate pipe holder.

In the compressor accumulator according to the present invention and the compressor equipped with the same, the refrigerant suction pipe may be fixed to the lower and upper surfaces of the case forming the refrigerant receiving space, respectively. Through this, the refrigerant suction pipe can be fixed to the accumulator case without a separate pipe holder, reducing vibration of the accumulator and lowering manufacturing costs.

Additionally, in the present invention, a pipe fixing portion may be formed on the upper surface of the case so that one end of the refrigerant suction pipe is inserted and fixed. Through this, the top of the refrigerant suction pipe can be firmly fixed.

In addition, in the present invention, the pipe fixing part is formed on the axial center line of the case, and the refrigerant suction pipe can be arranged to overlap the refrigerant connection pipe in the longitudinal or axial direction of the case. Through this, both ends of the refrigerant suction pipe can be fixed to both sides in the longitudinal direction of the case.

Additionally, in the present invention, the refrigerant suction pipe may be disposed on the axial center line of the case, and the refrigerant connecting pipe may be disposed eccentrically with respect to the axial center of the case. Through this, the refrigerant suction pipe can be fixed to the case while the refrigerant connection pipe can penetrate the upper surface of the case and communicate with the refrigerant receiving space.

Additionally, in the present invention, the refrigerant connecting pipe may be arranged closer to the axial center of the compressor than the refrigerant suction pipe. Through this, vibration at the area where the case and the refrigerant connecting pipe are joined can be reduced.

In addition, in the present invention, a refrigerant through hole is formed in the refrigerant suction pipe, and the refrigerant through hole may be formed at a level higher than or equal to the lower end of the refrigerant connection pipe. Through this, the separation effect of the gas refrigerant and the liquid refrigerant can be increased by allowing the refrigerant to flow for a long time or a long distance in the refrigerant receiving space.

In addition, in the present invention, the refrigerant connecting pipe extends from the refrigerant receiving space to a straight pipe, and the refrigerant connecting pipe may be provided with a screen support portion that supports a screen member made of a mesh screen. Through this, the refrigerant can quickly flow toward the bottom of the refrigerant receiving space through the refrigerant connection pipe.

In addition, in the present invention, the refrigerant connecting pipe includes a first guide portion extending in the longitudinal direction of the case in the refrigerant receiving space and a second guide portion bent in one or both directions and extending from the first guide portion, and the screen member is 1 Can be inserted into the guide. Through this, as the refrigerant flows toward the side of the refrigerant receiving space through the refrigerant connection pipe, the liquid refrigerant and the gas refrigerant can be more effectively separated by the cyclone effect. In addition, the screen member can be stably supported without adding a separate support member, thereby lowering manufacturing costs and increasing reliability.

In addition, in the present invention, the pipe fixing part supporting the refrigerant suction pipe is formed at the center of the upper cap, and the through hole into which the refrigerant connecting pipe is inserted may be formed eccentrically from the center of the upper cap toward the axial center of the compressor. Through this, vibration through the refrigerant connecting pipe can be lowered by adjacent to the compressor.

In addition, in the present invention, the through hole into which the refrigerant connecting pipe is inserted is formed at the center of the upper cap, and the pipe fixing part supporting the refrigerant suction pipe is located at the center of the upper cap closer to the axial center of the compressor or at the axial center of the compressor. It can be formed eccentrically towards the far side. Through this, the refrigerant suction pipe can be adjacent to the compressor to reduce vibration through the refrigerant suction pipe.

1 is a schematic diagram showing a refrigeration cycle device to which a rotary compressor is applied according to this embodiment;
Figure 2 is a front view showing a rotary compressor to which an accumulator according to this embodiment is applied;
Figure 3 is a cross-sectional view of Figure 2;
Figure 4 is an exploded perspective view of the accumulator according to this embodiment;
Figure 5 is a perspective view showing the accumulator assembled in Figure 4;
Figure 6 is a cross-sectional view showing the inside of the accumulator in Figure 5;
Figure 7 is a cross-sectional view of "IV-IV" of Figure 6;
Figure 8 is a graph showing the vibration of the accumulator according to this embodiment compared to the conventional one. Figure 8 (a) shows the vibration change in the refrigerant connecting pipe, and Figure 8 (b) shows the vibration change in the refrigerant suction pipe. Graphs showing each,
Figure 9 is a graph showing the noise during cooling and heating of the compressor to which the accumulator according to this embodiment is applied compared to the conventional one. Figure 9 (a) is for noise during cooling, and Figure 9 (b) is for noise during heating. Graphs compared to the past,
Figure 10 is a perspective view showing another embodiment of the refrigerant connecting pipe according to this embodiment;
Figure 11 is a cross-sectional view of "V-V" shown to explain one embodiment of the refrigerant guide tube in Figure 10;
Figure 12 is a cross-sectional view of "V-V" shown to explain another embodiment of the refrigerant guide tube in Figure 10;
13 is a cross-sectional view showing another embodiment of the accumulator;
14 is a cross-sectional view showing another embodiment of the accumulator;
15 is a cross-sectional view showing another embodiment of the accumulator;
Figure 16 is a cross-sectional view showing another embodiment of the accumulator.

Hereinafter, an accumulator for a compressor according to the present invention and a compressor equipped therewith will be described in detail based on an embodiment shown in the accompanying drawings.

For reference, the accumulator for a compressor according to this embodiment can be applied not only to a vertical compressor in which the shell forming the exterior of the compressor is installed in the longitudinal direction, but also to a horizontal compressor in which the shell is installed in the horizontal direction. In addition, the accumulator for a compressor according to this embodiment can be applied not only to a rotary compressor that forms a compression part with a rolling piston (or roller) and a vane, but also to a scroll compressor that forms a compression part by engaging a plurality of scrolls. In addition, the accumulator according to this embodiment can be equally applied to compressors to which an accumulator is applied, such as rotary compressors and scroll compressors, as well as high-pressure compressors in which the refrigerant refrigerant suction pipe is directly connected to the compression unit. Hereinafter, among rotary compressors, the description will focus on a typical rotary compressor in which a vane is inserted into a vane slot formed in a cylinder and slides into contact with the outer peripheral surface of a rolling piston (or roller).

Figure 1 is a schematic diagram showing a refrigeration cycle device to which a rotary compressor is applied according to this embodiment.

Referring to FIG. 1, the refrigeration cycle device to which the rotary compressor according to this embodiment is applied is such that the compressor 10, the condenser 20, the expander 30, the evaporator 40, and the accumulator 50 form a closed loop. It is composed. That is, the condenser 20, expander 30, evaporator 40, and accumulator 50 are sequentially connected to the discharge side of the compressor 10, and the accumulator 50 is sandwiched between the suction side of the compressor 10. The discharge side of the evaporator 40 is connected. Accordingly, the refrigerant compressed in the compressor 10 is discharged toward the condenser 20, and this refrigerant passes through the expander 30, the evaporator 40, and the accumulator 50 in order, and is sucked back into the compressor 10. The process is repeated.

However, the accumulator 50 is usually installed adjacent to the suction side of the compressor 10 and serves to separate the liquid refrigerant from the refrigerant sucked into the compressor 10, so the accumulator 50 forms a part of the refrigeration cycle device. It can be understood as a part of a compressor rather than a machine.

Figure 2 is a front view showing a rotary compressor to which an accumulator according to this embodiment is applied, and Figure 3 is a cross-sectional view of Figure 2.

Referring to FIGS. 2 and 3, the rotary compressor according to this embodiment has an electric motor 120 installed in the internal space 110a of the shell 110, and sucks refrigerant into the lower part of the electric motor 120. A compression unit 130 is installed to discharge the compressed material into the internal space 110a of the shell 110. The transmission unit 120 and the compression unit 130 are mechanically connected by a rotation shaft 125.

The internal space of the shell 110 is sealed, and a refrigerant suction pipe 532, which forms part of the refrigerant suction pipe 53 to be described later and is connected to the outlet side of the accumulator 50, is coupled to the lower half. A refrigerant discharge pipe 113 connected to the condenser is coupled to the top of the shell 110. The refrigerant discharge pipe 113 is coupled on the same axis as the rotation shaft 125, which will be described later.

The refrigerant suction pipe 532 penetrates the shell 110 and is directly connected to the suction port 1331 of the cylinder 133, and the refrigerant discharge pipe 113 penetrates the shell 110 and communicates with the internal space 110a. Accordingly, the compressor forms a high-pressure compressor in which the internal space 110a of the shell 110 forms the discharge pressure.

The accumulator 50 described above is installed on the upstream side of the refrigerant suction pipe 532, that is, between the evaporator 40 and the compressor 10. The accumulator 50 includes a case 51 provided with a refrigerant receiving space 51a, a refrigerant connecting pipe 52 that penetrates the top of the case 51 and communicates with the refrigerant receiving space 51a, and a case 51. It includes a refrigerant suction pipe (53) that passes through the bottom of and communicates with the refrigerant receiving space (51a). The accumulator 50 will be described again later.

The transmission unit 120 includes a stator 121 and a rotor 122. The electric motor 120 may be understood as a typical rotation motor or drive motor.

The stator 121 is fixed to the inside of the shell 110, and the rotor 122 is rotatably inserted into the inside of the stator 121. A stator coil 1211 is wound on the stator 121, and a permanent magnet (not shown) is inserted into the rotor 122. Additionally, a rotating shaft 125 is press-fitted and coupled to the center of the rotor 122.

The compression unit 130 includes a main bearing plate (hereinafter, main bearing) 131, a sub-bearing plate (hereinafter, sub-bearing) 132, a cylinder 133, a rolling piston 134, and a vane 135. .

The main bearing 131 is fixedly coupled to the inner peripheral surface of the shell 110, and a sub-bearing 132 supporting the rotating shaft 125 together with the main bearing 131 is provided on the lower side of the main bearing 131. It is provided across the In the longitudinal direction, the main bearing 131 can be called an upper bearing, and the sub-bearing 132 can be called a lower bearing.

The main bearing 131 includes a main plate portion 1311 that covers the upper surface of the cylinder 133 and forms a compression chamber (V), and extends from the main plate portion 1311 in the axial direction of the rotating shaft 125 to form a rotating shaft. It consists of a main boss part 1312 supporting (125).

The main plate portion 1311 is formed in a disk shape, and its outer peripheral surface is joined to the inner peripheral surface of the shell 110 by press-fitting or welding. A discharge port 1313 is formed in the main plate portion 1311 to discharge the refrigerant compressed in the compression chamber (V), and a discharge valve 1315 is installed at the end of the discharge port 1313 to open and close the discharge port 1313. .

The sub-bearing 132 includes a sub-plate portion 1321 that forms a compression chamber (V) together with the cylinder 133, and extends from the sub-plate portion 1321 in the axial direction of the rotating shaft 125 to support the rotating shaft 125. It consists of a supporting sub-boss unit 1322.

The subplate portion 1321 is formed in a disk shape and is bolted to the main plate portion 1311 together with the cylinder 133, and the subboss portion 1322 has a sub-axle hole 1322a through which the rotation shaft 125 is supported. ) is formed.

Between the main bearing 131 and the sub-bearing 132, a cylinder 133 is provided that forms a compression chamber (V) together with the main bearing 131 and the sub-bearing 132. The cylinder 133 is fixed to the main bearing 131 together with the sub bearing 132 by bolting it.

The cylinder 133 is formed in an annular shape, and a compression chamber (V) is formed therein by the main bearing 131 and the sub-bearing 132, and on one side of the cylinder 133, there is an intake port 1331 penetrating from the outer peripheral surface to the inner peripheral surface. ) is formed, and a vane slot 1332 into which the vane 135 is slidably inserted is formed on one side of the suction port 1331.

The compression chamber (V) of the cylinder (133) is equipped with a rolling piston (134) that is eccentrically coupled to the rotating shaft (125) and compresses the refrigerant while making a rotating movement. The inner wall of the cylinder (133) is equipped with a rolling piston (134). In contact with the rolling piston 134, a vane 135 that divides the compression chamber V into a suction chamber and a compression chamber is slidably inserted.

The rolling piston 134 is formed in an annular shape and rotatably coupled to the eccentric portion (not marked) of the rotating shaft 125, and the vane 135 is slidably inserted into the vane slot 1332 of the cylinder 133 to form a rolling piston. It contacts the outer peripheral surface of (134). Accordingly, the compression chamber (V) of the cylinder 133 is separated by the vane 135 into a suction space (uncoded) communicating with the intake port 1331 and a discharge space (uncoded) communicating with the discharge port 1313. .

In the drawing, the unexplained symbol 115 is a fixing bracket, and 136 is a discharge muffler.

The rotary compressor according to the present invention as described above operates as follows.

That is, when power is applied to the stator 121, the rotor 122 and the rotation shaft 125 rotate inside the stator 121, and the rolling piston 134 makes a turning movement, and the rolling piston 134 According to the rotating movement, the volume of the suction space forming the compression chamber (V) increases. Then, the refrigerant flows from the evaporator 40 through the refrigerant connecting pipe 52 into the refrigerant receiving space 51a of the accumulator 50, which is in communication with the compression chamber V.

This refrigerant is separated into gas refrigerant and liquid refrigerant in the refrigerant receiving space (51a) of the accumulator (50), and the gas refrigerant is sucked directly into the compression chamber (V) through the refrigerant suction pipe (53), while the liquid refrigerant is absorbed into the refrigerant receiving space (51a). It accumulates in the lower half of the space (51a), is vaporized, and is sucked into the compression chamber (V) through the refrigerant suction pipe (53).

Meanwhile, the refrigerant sucked into the compression chamber (V) is gradually compressed by the rotating movement of the rolling piston (134), and this refrigerant passes through the discharge port (1313) provided in the main bearing (131) in the discharge space (136). ) and then discharged into the internal space 110a of the shell 110. This refrigerant moves toward the condenser 20 through the refrigerant discharge pipe 113 and then repeats a series of processes in which it is sucked into the compression chamber (V) through the process described above.

At this time, the compressor 10 generates vibration by the transmission unit 120 and the compression unit 130, and the vibration generated in the compressor 10 is transmitted to the accumulator ( 50), and this vibration is transmitted to the refrigeration cycle device through the refrigerant connecting pipe 52 connected to the accumulator 50, which may increase the noise of the outdoor unit including the refrigeration cycle device. In consideration of this, conventionally, the accumulator 50 is additionally provided with a pipe holder (not shown) to support the refrigerant suction pipe 53. However, as the pipe holder is added, the number of parts and assembly man-hours increase, which may result in an increase in the manufacturing cost of the accumulator 50.

In addition, the refrigerant that flows into the refrigerant receiving space (51a) of the accumulator (50) through the refrigerant connecting pipe (52) is sucked from the refrigerant receiving space (51a) into the refrigerant suction pipe (53) and enters the compression chamber of the compressor (10). Move to (V).

However, conventionally, as the refrigerant connecting pipe 52 and the refrigerant suction pipe 53 are arranged on the same axis, the outlet of the refrigerant connecting pipe 52 and the inlet of the refrigerant suction pipe 53 are adjacent to each other, which causes the refrigerant to flow. Since the gas refrigerant and the liquid refrigerant are not sufficiently separated in the accommodation space (51a), a large amount of liquid refrigerant may flow into the compression chamber (V), reducing compression efficiency and reliability. In addition, when the outlet of the refrigerant connecting pipe (52) and the inlet of the refrigerant suction pipe (53) are adjacent, the refrigerant is quickly sucked from the refrigerant connecting pipe (52) to the refrigerant suction pipe (53), creating suction noise in the refrigerant receiving space. As the noise cannot be attenuated, the noise of the outdoor unit including the compressor 10 and the accumulator 50 may also increase.

Accordingly, in this embodiment, both ends of at least one of the refrigerant connection pipe 52 and the refrigerant suction pipe 53 are fixed to both sides of the case 51 forming the accumulator 50, thereby excluding the pipe holder and accumulator ( 50) can suppress vibration. In addition, vibration of the accumulator 50 can be further suppressed by moving one of the refrigerant connection pipe 52 and the refrigerant suction pipe 53 to be adjacent to the compressor. Through this, the manufacturing cost and vibration of the accumulator 50 can be reduced.

In addition, by arranging the outlet of the refrigerant connecting pipe 52 lower than the inlet of the refrigerant suction pipe 53, the separation effect of the gas refrigerant and the liquid refrigerant in the refrigerant receiving space 51a can be improved and suction noise can be attenuated.

Figure 4 is a perspective view showing the accumulator according to the present embodiment disassembled, Figure 5 is a perspective view showing the accumulator assembled in Figure 4, Figure 6 is a cross-sectional view showing the inside of the accumulator in Figure 5, and Figure 7 is a This is the “Ⅳ-Ⅳ” front cross-sectional view of 6.

4 to 7, the accumulator 50 according to this embodiment includes a case 51, a refrigerant connection pipe 52, and a refrigerant suction pipe 53. The case 51 is disposed on the outside of the compressor 10, the refrigerant connecting pipe 52 connects the outlet of the evaporator 40 and the inlet of the accumulator 50, and the refrigerant suction pipe 53 connects the accumulator 50. ) Connect the outlet of the compressor (10) to the suction side. Accordingly, the refrigerant flows from the evaporator 40 to the accumulator 50 through the refrigerant connecting pipe 52, and the refrigerant is sucked into the compression chamber (V) of the compressor 10 through the refrigerant suction pipe 53.

Referring to Figures 4 and 5, the case 51 includes a cylindrical body 511 and an upper cap 512. The cylindrical body 511 and the upper cap 512 may each be formed of steel.

The cylindrical body 511 may be composed of one cylindrical body, or a plurality of cylindrical bodies may be connected in the longitudinal direction to form one cylindrical body. In this embodiment, the description will focus on an example formed by one cylindrical body 511. In addition, the cylindrical body 511 only symbolically defines its shape and does not necessarily have to be cylindrical. For example, it may be formed into a square tube, etc.

The cylindrical body 511 may be formed in a shape in which the lower end of both ends in the longitudinal direction (or axial direction) is closed and the upper end is open. However, the lower end of the cylindrical body 511 extends as a single piece from the side of the cylindrical body 511 and is covered, and at the center, a first piping hole 511a is formed along the length of the case 51 so that the refrigerant flow pipe 531 penetrates. It can be formed by penetrating in one direction. However, the cylindrical body 511 may be formed in an open shape at the bottom like the top. Hereinafter, the description will focus on the cylindrical body 511 whose bottom is closed.

The lower end of the cylindrical body 511 may be formed in a downward hemispherical shape that protrudes downward. However, the lower end of the cylindrical body 511 is not necessarily limited to a hemispherical shape. For example, the lower end of the cylindrical body 511 may be formed flat or may be shaped like an upward hemisphere. However, the lower end of the cylindrical body 511 is formed in a downward hemispherical shape, which is advantageous in terms of vibration compared to the flat shape, and is easier to manufacture than that formed in an upward hemispherical shape, and secures the volume of the refrigerant receiving space (51a). It is also advantageous to do so.

A first pipe hole 511a is formed at the bottom of the cylindrical body 511. The first pipe hole 511a is a hole into which the first end 531a of the refrigerant flow pipe 531, which forms part of the refrigerant suction pipe 53, which will be described later, is inserted and fixed to the case 51.

For example, the first pipe hole 511a may be formed through the center of the bottom of the cylindrical body 511. Accordingly, the refrigerant flow pipe 531 can be coupled to the cylindrical body 511 by penetrating the bottom center of the cylindrical body 511 in the longitudinal direction of the case 51.

A first extension protrusion (not marked) surrounding the first pipe hole 511a may be formed in a cylindrical shape around the first pipe hole 511a. Accordingly, the first end 531a of the refrigerant flow pipe 531 inserted through the first piping hole 511a can be stably supported by being welded to the first extension protrusion.

The cylindrical body 511 may be formed to have the same inner diameter along the longitudinal direction of the case 51. However, the inner diameter of the cylindrical body 511 may be formed differently along the longitudinal direction of the case 51. For example, the cylindrical body 511 may be formed in a truncated cone shape whose inner diameter increases toward the bottom. In this case, the center of gravity moves downward, which is advantageous in terms of vibration attenuation and can also be advantageous in terms of the separation effect of the liquid refrigerant.

The cylindrical body 511 may be fixed to the shell 110 of the compressor 10 by at least one fixing bracket 115. For example, in the case where there is only one fixing bracket 115, it may be advantageous in terms of vibration attenuation for the fixing bracket 115 to support the upper half of the cylindrical body 511.

Referring to FIGS. 4 and 5 , the upper cap 512 according to this embodiment may be formed in an overall flat disk shape. However, the upper cap 512 may be formed in a dome shape that is slightly convex upward, that is, in a direction away from the refrigerant receiving space 51a. Accordingly, not only is it advantageous to reduce noise, but even if moisture generated from the outdoor unit of the refrigeration cycle device or rainwater when installed outdoors penetrates, it is possible to prevent corrosion, etc. by suppressing accumulation on the upper surface of the accumulator 50.

The upper cap 512 may have a flat portion 512a formed horizontally across its central portion, and downwardly inclined inclined surface portions may be formed continuously on both sides of the flat portion 512a. A second pipe hole 512c may be formed on one side of the flat portion 512a by penetrating in the longitudinal direction of the case 51. The second pipe hole 512c is a hole through which the refrigerant connection pipe 521, which forms part of the refrigerant connection pipe 52, is connected. On the outer surface of the upper cap 512, a second extension protrusion (not denoted) extending along the circumference of the second pipe hole 512c may be formed in a cylindrical shape. Accordingly, the refrigerant connection pipe 521 inserted through the second pipe hole 512c can be stably supported by welding to the second extension protrusion (not indicated).

The second pipe hole 512c may be formed eccentrically from the axial center CL2 of the accumulator 50, that is, the axial center of the case 51 or the center O of the upper cap 512. For example, the second pipe hole 512c may be formed to be positioned as eccentrically as possible from the center O of the upper cap 512 toward the axial center CL1 of the compressor 10. Accordingly, the refrigerant pipe connected to the refrigerant connection pipe 52 is placed close to the compressor 10, which is the source of vibration, so that secondary vibration transmitted from the compressor 10 can be attenuated.

Referring to Figures 5 and 6, the refrigerant flow pipe 531 is inserted and fixed at the center (O) of the upper cap 512, which forms the axial center (CL2) of the accumulator 50 or the axial center of the case 51. A pipe fixing portion 512d may be formed. For example, the pipe fixing portion 512d may extend from the outer surface of the upper cap 512 in a direction away from the refrigerant receiving space 51a. In other words, when viewed from the inner side of the upper cap 512, the pipe fixing portion 512d may be depressed to a preset depth. Accordingly, the first end 531a of the refrigerant flow pipe 531 can be inserted into the pipe fixing part 512d and fixed by welding.

The insertion depth of the refrigerant flow pipe 531 may be determined depending on the height of the pipe fixing part 512d. Accordingly, it may be advantageous in terms of stability of the refrigerant flow pipe 531 to make the height of the pipe fixing part 512d as high as possible.

Referring to FIGS. 4 to 7 , the refrigerant connection pipe 52 according to this embodiment may include a refrigerant connection pipe 521 and a refrigerant guide pipe 522. The refrigerant connecting pipe 52 extends from the refrigerant receiving space 51a of the case 51 in the longitudinal direction of the case 51, and may be arranged parallel to the case 51.

The refrigerant connection pipe 521 may be made of the same material as the refrigerant pipe, for example, a copper pipe. However, in some cases, the refrigerant connection pipe 521 may be made of the same material as the upper cap 512, for example, a steel pipe.

One end of the refrigerant connection pipe 521 may be inserted into the second pipe hole 512c eccentric from the center of the upper cap 512 and welded to the second extension protrusion of the upper cap 512. The other end of the refrigerant connection pipe 521 extends outside the upper cap 512, that is, away from the refrigerant receiving space 51a, and may be connected to a refrigerant pipe extending from the outlet of the evaporator 40.

The refrigerant connection pipe 521 may be formed as a straight pipe parallel to the case 51 in the longitudinal direction. Accordingly, the refrigerant pipe may be connected on the same axis as the refrigerant connection pipe 521, for example, at an eccentric position from the refrigerant suction pipe 53 toward the compressor 10. Through this, transmission of vibration of the compressor 10 to the refrigerant piping can be minimized.

Although not shown in the drawing, the refrigerant connection pipe 521 may be formed by bending one end, that is, the end connected to the refrigerant pipe, so that it is located on the same axis as the refrigerant suction pipe 53. Accordingly, as the refrigerant connection pipe 521 approaches the compressor 10 and is connected to the case 51, the vibration of the accumulator 50 is attenuated and the existing manufacturing line for connecting the accumulator 50 and the refrigerant pipe is maintained. Yes, you can use it.

The refrigerant guide tube 522 may be made of the same material as the refrigerant connection tube 521, for example, a copper tube. The refrigerant guide pipe 522 is formed as a straight pipe and can be located on the same axis as the refrigerant connection pipe 521. For example, the refrigerant guide tube 522 may be formed in a cylindrical shape with both ends open in the longitudinal direction of the case 51 and between both ends closed.

In other words, the upper end of the refrigerant guide pipe 522 may be partially expanded and opened to face the lower end of the refrigerant connection pipe 521. Accordingly, the upper end of the refrigerant guide pipe 522 can be welded by inserting the lower end of the refrigerant connection pipe 521 around the inner end of the second pipe hole 512c.

The lower end of the refrigerant guide pipe 522 is formed to have approximately the same inner diameter as the refrigerant connection pipe 521 and may be opened toward the bottom of the refrigerant receiving space 51a. Accordingly, a screen member made of a mesh screen 523 is inserted into the refrigerant guide pipe 522, and the mesh screen 523 is formed as a kind of mesh bundle made of metal and can be welded to the refrigerant guide pipe 522. there is.

Referring to FIG. 6, a screen support portion 523a may be formed inside the refrigerant guide pipe 522 to support the mesh screen 523. The screen support portion 523a can be formed by concave to reduce the inner diameter of the refrigerant guide tube 522 or by inserting a separate ring. This embodiment discloses an example in which a ring is inserted into the refrigerant guide tube 522. Accordingly, separation of the mesh screen 523 from the refrigerant guide tube 522 can be prevented and reliability can be improved.

The lower end of the refrigerant guide tube 522 may extend to approximately the middle height of the cylindrical body 511. The lower end of the refrigerant guide pipe 522 forms the outlet of the refrigerant connecting pipe 52. The length of the refrigerant guide pipe 522 is formed as long as possible and is located close to the bottom of the cylindrical body 511 to allow the liquid refrigerant to flow. This may be desirable to increase the separation effect.

However, if the lower end of the refrigerant guide tube 522 is too close to the lower surface of the cylindrical body 511, the length of the refrigerant guide tube 522 becomes correspondingly longer, making it vulnerable to vibration. Accordingly, the length of the refrigerant guide tube 522 is approximately at the mid-height of the top of the cylindrical body 511, that is, the upper cap 512, with the lower end of the refrigerant guide tube 522 located below the refrigerant through hole 531c, which will be described later. It may be desirable to be formed to be less than or equal to the length of.

Although not shown in the drawing, the other end of the refrigerant guide pipe 522 is in contact with the lower surface of the cylindrical body 511 and is welded, or is provided with a separate pipe fixing part 512d to form the second end of the refrigerant flow pipe 531, which will be described later. It may also be inserted and combined as in (531b). In this case, the refrigerant through hole 531c, which forms a kind of refrigerant discharge hole, may be formed in the middle of the refrigerant guide pipe 522 at a lower position than the refrigerant through hole 531c of the refrigerant flow pipe 531.

Referring to FIGS. 4 to 7 , the refrigerant suction pipe 53 according to this embodiment may include a refrigerant flow pipe 531 and a refrigerant suction pipe 532. The refrigerant suction pipe 53 extends from the refrigerant receiving space 51a of the case 51 in the longitudinal direction of the case 51, and may be arranged parallel to the case 51. Accordingly, the refrigerant suction pipe 53 is arranged parallel to the refrigerant connection pipe 52, and at least a portion of the refrigerant suction pipe 53 is located in the longitudinal (or axial direction) of the refrigerant connection pipe 52 and the case 51. ) can be arranged to overlap.

The refrigerant flow pipe 531 is formed as a straight pipe and may be located on the same axis as the center of the cylindrical body 511. In other words, the first end (531a) of the refrigerant flow pipe 531 may be located at the center of the bottom of the cylindrical body 511, and the second end (531b) may be located at the center of the upper cap 512.

Specifically, the first end (531a) of the refrigerant flow pipe 531 is inserted and fixed into the first pipe hole (511a) of the cylindrical body 511, and the second end (531b) of the refrigerant flow pipe 531 is fixed. It can be inserted and fixed into the pipe fixing part 512d of the upper cap 512. Accordingly, both ends of the refrigerant flow pipe 531 are fixed to the case 51, so that even if the refrigerant flow pipe 531 is connected to the compressor 10 through the refrigerant suction pipe 532, which will be described later, the refrigerant flow pipe 531 Secondary vibration can be minimized.

The refrigerant flow pipe 531 may be formed of the same steel material as the case 51. Accordingly, the first end (531a) and the second end (531b) of the refrigerant flow pipe 531 can be welded to the cylindrical body 511 and the upper cap 512, respectively.

Although not shown in the drawing, at least one of both ends of the refrigerant flow pipe 531 may further be provided with an elastic member (not shown) such as rubber. For example, an elastic member is inserted or Alternatively, the elastic surface may be coated. In this case, the refrigerant flow pipe 531 may be fixed to the upper cap 512 by press-fitting it rather than welding it. Therefore, in this case, the refrigerant flow pipe 531 may be formed of a material different from the upper cap 512, for example, a copper pipe.

A refrigerant through hole 531c communicating with the refrigerant receiving space 51a may be formed at the middle height of the refrigerant flow pipe 531, that is, between the first end 531a and the second end 531b. For example, the refrigerant through hole 531c is higher than or equal to the lower end of the refrigerant guide pipe 522 forming the outlet of the refrigerant connection pipe 52, and preferably has a preset height (△H) higher than the lower end of the refrigerant guide pipe 522. ) can be formed to be positioned as high as

In other words, the refrigerant flow pipe 531, which forms part of the refrigerant suction pipe 53, is in the longitudinal direction (or axial direction) of the refrigerant guide pipe 522, which forms part of the refrigerant connection pipe 52, and the case 51. May overlap. Accordingly, a certain distance can be secured between the outlet of the refrigerant connection pipe 521 and the inlet of the refrigerant flow pipe 531.

Through this, the refrigerant flowing into the refrigerant receiving space (51a) through the lower end of the refrigerant guide pipe 522 does not move directly toward the refrigerant through hole (531c), but turns around the refrigerant receiving space (51a) and then enters the refrigerant through hole (531c). As it moves to , the liquid refrigerant can be effectively separated from the gas refrigerant flowing into the refrigerant receiving space (51a).

However, the position of the refrigerant through hole 531c may be formed in various ways as needed. For example, the refrigerant through hole 531c is formed adjacent to the bottom of the refrigerant flow pipe 531 to minimize the moving distance of the refrigerant in the refrigerant receiving space (51a), or is formed far from the bottom of the refrigerant flow pipe 531. The movement distance of the refrigerant in the refrigerant receiving space (51a) can be maximized. Through this, it is possible to appropriately adjust the intake amount of refrigerant and at the same time arbitrarily adjust the frequency band to attenuate the noise generated during intake of refrigerant.

Additionally, one refrigerant through hole 531c may be formed to have a size smaller than or equal to the inner diameter or cross-sectional area of the refrigerant flow pipe 531. For example, the inner diameter or cross-sectional area of the refrigerant through hole 531c may be greater than or equal to 0.5 times the inner diameter or cross-sectional area of the refrigerant flow pipe 531 and may be formed to be equal to or smaller than the inner diameter or cross-sectional area of the refrigerant flow pipe 531.

However, the size of the refrigerant hole 531c may be formed in various ways as needed. For example, the cross-sectional area of the refrigerant through hole 531c is formed larger than the inner diameter of the refrigerant flow pipe 531 to minimize the flow resistance of the refrigerant, or is formed smaller than the inner diameter of the refrigerant flow pipe 531 to compress the liquid refrigerant (10). Inflow into the furnace can be minimized. Through this, it is possible to appropriately adjust the intake amount of refrigerant and at the same time arbitrarily adjust the frequency band to attenuate the noise generated during intake of refrigerant.

The refrigerant suction pipe 532 is generally formed in an L shape, one end of which is connected to the first end (531a) of the refrigerant flow pipe 531, and the other end of the refrigerant suction pipe 532 is connected to the shell of the compressor (10). It may pass through (110) and be connected to the intake port (1331). The refrigerant suction pipe 532 may be formed of a copper pipe or a steel pipe. For example, when the shell 110 of the compressor 10 is provided with a connecting member (not marked) made of copper material, the refrigerant suction pipe 532 is formed of a copper pipe, and the connecting member is made of a steel material. The refrigerant suction pipe 532 may also be formed of a steel pipe.

The accumulator 50 according to the present embodiment as described above may have vibration attenuation compared to the conventional accumulator 50. Figure 8 is a graph showing the vibration of the accumulator according to this embodiment compared to the conventional one. Figure 8 (a) shows the vibration change in the refrigerant connecting pipe, and Figure 8 (b) shows the vibration change in the refrigerant suction pipe. These are graphs showing each.

Referring to (a) of FIG. 8, it can be seen that vibration in the refrigerant connecting pipe 52, which forms one end of the accumulator 50 according to this embodiment, is greatly reduced. In other words, the vibration in the refrigerant connecting pipe 52 gradually increases as the operating frequency (Hz) increases, but in the past (for example, patent document 3), when the operating frequency increases from 50 Hz to 90 Hz, the vibration increases at approximately 1000 gal. It can be seen that it increases to almost 2000 gal. However, in this embodiment, it can be seen that the vibration only increases from approximately 1000 gal to 1500 gal in the same operating frequency band. Through this, it can be seen that the vibration in the refrigerant connecting pipe 52 of the accumulator 50 according to this embodiment is significantly reduced compared to the conventional accumulator 50.

This is because the refrigerant connecting pipe 52 is shifted and connected so that it is eccentric from the axial center CL2 of the accumulator 50 toward the axial center CL1 of the compressor 10, and the case 51 of the accumulator 50 ) can be seen to be because the amplitude of the vibration transmitted from the refrigerant connection pipe 52 is attenuated.

In addition, referring to (b) of FIG. 8, it can be seen that vibration in the refrigerant suction pipe 53 forming the other end of the accumulator 50 according to this embodiment is greatly reduced. In other words, the vibration in the conventional refrigerant suction pipe 53 gradually increases as the operating frequency (Hz) increases. When the operating frequency increases from 50 Hz to 90 Hz, the vibration increases from approximately 1000 gal to almost 1400 gal. . However, in this embodiment, it can be seen that the vibration decreases from approximately 1000 gal to 500 gal in the same operating frequency band. Through this, it can be seen that the vibration in the refrigerant suction pipe 53 of the accumulator 50 according to this embodiment is significantly reduced compared to the conventional accumulator 50.

As described above, the axial center (CL3) of the refrigerant connecting pipe 52 is moved and connected to the compressor 10, thereby reducing the vibration of the accumulator 50, and at the same time, the refrigerant flow path forming the refrigerant suction pipe 53 is reduced. This can be seen as being because the vibration transmitted from the compressor 10 to the refrigerant suction pipe 53 is attenuated as both ends of the pipe 531 are fixed to the case 51 of the accumulator 50.

Additionally, the accumulator 50 according to this embodiment can reduce suction noise compared to a conventional accumulator.

Figure 9 is a graph showing the noise during cooling and heating of the compressor to which the accumulator according to this embodiment is applied compared to the conventional one. Figure 9 (a) is for noise during cooling, and Figure 9 (b) is for noise during heating. These are graphs compared to the past.

Referring to (a) of FIG. 9, it can be seen that during cooling, the compressor 10 to which the accumulator 50 according to this embodiment is applied has a noise reduction effect compared to the conventional method (for example, patent document 3). . That is, when cooling at approximately 70 to 80 rpm, the compressor 10 according to this embodiment has approximately 52.5 dB, while the conventional compressor has approximately 53.8 dB. Accordingly, during cooling, the noise of the compressor 10 to which the accumulator 50 according to this embodiment is applied can be seen to be reduced by approximately 1.3 dB compared to the conventional one.

On the other hand, referring to (b) of FIG. 9, it can be seen that the compressor 10 to which the accumulator 50 according to this embodiment is applied has a greater noise reduction effect during heating than during cooling compared to the conventional one. That is, it can be seen that during heating operating at approximately 80 to 90 rpm, the compressor 10 according to this embodiment is approximately 51.3 dB, while the conventional compressor is approximately 53.0 dB. Accordingly, during heating, the noise of the compressor 10 to which the accumulator 50 according to this embodiment is applied can be seen to be reduced by approximately 1.7 dB compared to the conventional one.

As described above, the axial center (CL3) of the refrigerant connecting pipe 52 is moved and connected to the compressor 10, and both ends of the refrigerant flow pipe 531 forming the refrigerant suction pipe 53 are connected to the accumulator 50. It can be seen that being fixed to case 51 of ) also had an effect. In particular, in this embodiment, the inlet of the refrigerant suction pipe 53 is placed higher than the outlet of the refrigerant connecting pipe 52, so that it flows into the refrigerant receiving space 51a of the accumulator 50 through the refrigerant connecting pipe 52. The incoming refrigerant may not be quickly sucked into the refrigerant suction pipe 53, but may be guided to the refrigerant suction pipe 53 after widely circulating in the refrigerant receiving space (51a). This can be seen as being because the suction noise is effectively attenuated in the refrigerant receiving space (51a) of the accumulator (50).

In addition, in this embodiment, the first end (531a) of the refrigerant flow pipe 531, which forms part of the refrigerant suction pipe 53, is fixed to the lower end of the cylindrical body 511, while the second end of the refrigerant flow pipe 531 As the stage 531b is fixed to the upper cap 512 covering the top of the cylindrical body 511, the accumulator 50 according to this embodiment has a refrigerant flow pipe 531 without adding a separate pipe holder. can be fixed stably. Through this, manufacturing costs can be lowered by suppressing the addition of parts such as pipe holders.

Meanwhile, other embodiments of the accumulator are as follows.

That is, in the above-described embodiment, the refrigerant guide pipe is formed as a straight pipe, but in some cases, it may be formed as a bent pipe.

*FIG. 10 is a perspective view showing another embodiment of the refrigerant connecting pipe according to this embodiment, FIG. 11 is a cross-sectional view "V-V" shown to explain one embodiment of the refrigerant guide pipe in FIG. 10, and FIG. 12 is a cross-sectional view shown in FIG. 10 to explain another embodiment of the refrigerant guide tube.

10 and 11, the accumulator 50 according to this embodiment includes a case 51, a refrigerant connection pipe 52, and a refrigerant suction pipe 53. The basic configuration and resulting effects of the case 51, the refrigerant connecting pipe 52, and the refrigerant suction pipe 53 are similar to the above-described embodiment.

However, in this embodiment, the refrigerant guide pipe 522, which forms part of the refrigerant connecting pipe 52, may be formed as a bent pipe, unlike the straight pipe described above. For example, the refrigerant guide tube 522 according to this embodiment may be formed in a shape in which the lower half is bent and the outlet opens toward the inner surface of the cylindrical body 511, that is, an L-shaped tube.

Specifically, the refrigerant guide pipe 522 may be composed of a first guide portion 522a forming an inlet and a second guide portion 522b forming an outlet. The first guide portion 522a is inserted and coupled to the lower end of the refrigerant connection pipe 521, and the second guide portion 522b may extend laterally from the bottom or middle of the first guide portion 522a.

In this case, the mesh screen 523 is inserted into the first guide portion 522a, and the outlet of the second guide portion 522b may extend in the circumferential direction along the inner peripheral surface of the cylindrical body 511. It may be desirable for the outlet end of the second guide portion 522b to extend in a direction away from the refrigerant flow pipe 531.

The first guide part 522a and the second guide part 522b may be formed as a single body as shown in the drawing, or may be assembled separately depending on the case. When the first guide portion 522a and the second guide portion 522b are formed as a single piece, the refrigerant guide tube 522 is easy to manufacture, and the first guide portion 522a and the second guide portion 522b are When assembled, the degree of freedom regarding shape design of the second guide portion 522b can be increased, such as by forming the second guide portion 522b to correspond to the inner peripheral surface of the cylindrical body 511.

The first guide portion 522a and the second guide portion 522b may have the same inner diameter, or may have different inner diameters depending on the case. When the inner diameters are different, it is preferable that the mesh screen 523 in which the inner diameter of the second guide portion 522b is smaller than the inner diameter of the first guide portion 522a can be maintained more stably.

The second guide portion 522b may extend from the bottom of the first guide portion 522a or from the middle of the first guide portion 522a. When the second guide portion (522b) extends from the bottom of the first guide portion (522a), the flow resistance of the refrigerant can be lowered, while when the second guide portion (522b) extends from the middle of the first guide portion (522a), the flow resistance of the refrigerant can be lowered. When extended, the mesh screen 523 can be held more stably.

As described above, when the lower half of the refrigerant guide pipe 522 is bent to face the inner surface of the cylindrical body 511, the refrigerant passing through the refrigerant guide pipe 522 and flowing into the refrigerant receiving space 51a is cylindrical. It may rotate circularly or spirally along the inner peripheral surface of the body 511. Then, as the refrigerant rotates under centrifugal force in the refrigerant receiving space 51a, a kind of cyclone effect is generated, thereby improving the separation effect of the gas refrigerant and the liquid refrigerant. Through this, it is possible to more effectively prevent liquid refrigerant from flowing into the compression chamber (V). In addition, as the separation effect of the liquid refrigerant and the gas refrigerant is improved compared to the same volume of the accumulator 50, the size of the accumulator 50 can be reduced, and through this, the accumulator 50 can be miniaturized to further reduce vibration.

In addition, in the case where the refrigerant guide pipe 522 is formed as a bent pipe as in the present embodiment, the mesh screen 523 is ) can be prevented from leaving the refrigerant guide tube (522). Through this, it is possible to prevent the mesh screen 523 from being separated from the refrigerant guide tube 522, increasing reliability, and lowering manufacturing costs by eliminating welding work to fix the mesh screen 523 to the refrigerant guide tube 522. there is.

In addition, FIG. 10 shows an example in which the second guide part 522b is bent in a direction approximately perpendicular to the first guide part 522a, but it does not necessarily need to be bent in a direction perpendicular to the first guide part 522a. For example, the outlet of the second guide part 522b may be formed to be inclined downward by approximately 45° with respect to the first guide part 522a. In this case, the refrigerant discharged from the second guide portion 522b can move toward the bottom of the case 51, that is, the bottom of the refrigerant receiving space 51a, which is far from the refrigerant through hole 531c, while rotating in a spiral shape. The separation effect of liquid refrigerant can be improved.

Additionally, the second guide portions 522b1 and 522b2 according to this embodiment may be formed in plural pieces. For example, referring to FIG. 12 , the second guide parts 522b1 and 522b2 may extend from the bottom of the first guide part 522a to both the left and right, respectively. In other words, the refrigerant guide tube 522 according to this embodiment may be formed into a T-shaped tube by combining one first guide part 522b1 and a plurality of second guide parts 522b2.

In this case, even if the refrigerant guide tube 522 is bent, the outlet is formed on both sides, so the flow resistance of the refrigerant discharged into the refrigerant receiving space (51a) is reduced, so that the refrigerant can be discharged at a high speed toward the refrigerant receiving space (51a). there is.

In addition, as a plurality of outlets of the refrigerant guide tube 522 are formed, the refrigerant circulation pattern in the refrigerant receiving space 51a becomes complicated, and collisions between refrigerants increase, thereby improving the separation effect of the liquid refrigerant.

Meanwhile, another example of an accumulator is as follows.

That is, in the above-described embodiment, the piping fixing part protrudes upward from the upper cap and the second end of the refrigerant flow pipe is inserted into the piping fixing part. However, in some cases, the piping fixing part protrudes downward from the upper cap so that the refrigerant It may be inserted and fixed in the second end of the flow pipe.

Figure 13 is a cross-sectional view showing another embodiment of the accumulator.

Referring to FIG. 13, the accumulator 50 according to this embodiment includes a case 51, a refrigerant connection pipe 52, and a refrigerant suction pipe 53. The basic configuration and resulting effects of the case 51, the refrigerant connecting pipe 52, and the refrigerant suction pipe 53 are similar to the above-described embodiment.

However, in this embodiment, a pipe fixing part 512d is formed in the center of the upper cap 512 forming part of the case 51, and the pipe fixing part 512d protrudes downward toward the refrigerant receiving space 51a. You can. Accordingly, the second end (531b) of the refrigerant flow pipe 531, which forms part of the refrigerant suction pipe 53, is fixed to the pipe fixing part 512d of the upper cap 512, and the pipe fixing part 512d is the refrigerant. It can be inserted and fixed into the second end (531b) of the flow pipe 531.

In this case as well, the pipe fixing part 512d and the refrigerant flow pipe 531 may be fixed by welding, press fitting, or may be inserted using a separate elastic member (not shown). Since this is the same as the above-described embodiment, the detailed description thereof will be replaced with the description in the above-described embodiment.

When the pipe fixing part 512d protrudes (sinks) toward the refrigerant flow pipe 531 as described above, the height of the accumulator 50 is lowered by the pipe fixing part 512d compared to the above-described embodiment. Through this, there is no need to avoid the pipe fixing part 512d when assembling the refrigerant suction pipe 53, so the refrigerant suction pipe 53 can be easily assembled. Although not shown in the drawing, when the refrigerant flow pipe 531 is bent and positioned at the axial center (CL2) of the accumulator 50, the pipe fixing part 512d does not protrude from the upper cap 512, so that the refrigerant flow pipe 531 is bent. It may be easy to bend the pipe 531 and place it at the axial center CL2 of the accumulator 50.

In addition, the refrigerant flow pipe 531 can be stably fixed by forming a long pipe fixing part 512d. For example, in order to stably fix the second end (531b) of the refrigerant flow pipe 531, it is advantageous for the pipe fixing part (512d) to be formed as long as possible. However, when the pipe fixing part 512d protrudes from the outer surface of the upper cap 512, the protruding length of the pipe fixing part 512d may be limited. On the other hand, in the case where the pipe fixing part 512d is collapsed from the upper cap 512 into the refrigerant receiving space 51a as in the present embodiment, there is a risk of collision with surrounding parts even if the pipe fixing part 512d is formed to be long. does not exist. Through this, the second end (531b) of the refrigerant flow pipe 531 can be fixed more stably.

However, in the case where the pipe fixing part 512d protrudes toward the refrigerant receiving space 51a as in the present embodiment, the pipe fixing part 512d is depressed on the outer surface of the upper cap 512, so that the pipe fixing part 512d is depressed when installed outdoors. Rainwater, etc. may accumulate in the fixing part 512d and cause corrosion. Accordingly, by inserting a stopper into the pipe fixing part 512d recessed on the outer surface of the upper cap 512, it is possible to prevent rainwater or foreign substances from accumulating.

Meanwhile, another example of an accumulator is as follows.

That is, in the above-described embodiments, a pipe fixing part for fixing the second end of the refrigerant flow pipe is formed in the upper cap, but in some cases, a pipe hole through which the refrigerant flow pipe passes may be formed in the upper cap.

Figure 14 is a cross-sectional view showing another embodiment of the accumulator.

Referring to FIG. 14, the accumulator 50 according to this embodiment includes a case 51, a refrigerant connecting pipe 52, and a refrigerant suction pipe 53. The basic configuration and resulting effects of the case 51, the refrigerant connecting pipe 52, and the refrigerant suction pipe 53 are similar to the above-described embodiment.

However, in this embodiment, a third piping hole 512e is formed at the center O of the upper cap 512 by penetrating in the longitudinal direction of the case 51, and the second end 531b of the refrigerant flow pipe 531 ) may be welded and joined through the third pipe hole 512e. In this case, a separate stopper member 533 may be inserted into the second end 531b of the refrigerant flow pipe 531 to cover the second end 531b of the refrigerant flow pipe 531.

As described above, when the second end 531b of the refrigerant flow pipe 531 penetrates the upper cap 512 and is covered from the outside, the tolerance for the assembly length of the refrigerant flow pipe 531 can be expanded. . Accordingly, even if the length of the refrigerant flow pipe 531 increases due to processing errors during assembly of the refrigerant flow pipe 531, the upper cap 512 can be stably assembled to the cylindrical body 511.

In other words, when the pipe fixing part 512d is formed in the upper cap 512 as in the above-described embodiments and the refrigerant flow pipe 531 is inserted into the pipe fixing part 512d, the refrigerant flow pipe 531 The length and height of the pipe fixing part (512d) must be precisely processed. If the length of the refrigerant flow pipe 531 is longer than the height of the pipe fixing part 512d, the upper cap 512 may be lifted off the cylindrical body 511, and in the opposite case, the refrigerant flow pipe 531 may be lifted off the pipe. It may not be reliably inserted into government 512d.

However, in the case where the refrigerant flow pipe 531 penetrates the upper cap 512 as in the present embodiment, the length of the refrigerant flow pipe 531 is formed sufficiently long to separate the refrigerant flow pipe 531 and the upper cap due to processing errors. Assembly defects between the caps 512 can be prevented in advance.

Meanwhile, another example of an accumulator is as follows.

That is, in the above-described embodiments, the refrigerant suction pipe is located at the axial center of the accumulator and the refrigerant connecting pipe is eccentrically moved from the axial center of the accumulator toward the axial center of the compressor. However, in some cases, the refrigerant suction pipe and the refrigerant connecting pipe are located at the axial center of the accumulator. The positions may be opposite to each other.

Figure 15 is a cross-sectional view showing another embodiment of the accumulator.

Referring to FIG. 15, the accumulator 50 according to this embodiment includes a case 51, a refrigerant connection pipe 52, and a refrigerant suction pipe 53. The basic configuration and resulting effects of the case 51, the refrigerant connecting pipe 52, and the refrigerant suction pipe 53 are similar to the above-described embodiment.

However, in this embodiment, the refrigerant connecting pipe 52 is coupled through the center O of the upper cap 512, and the axial center CL4 of the refrigerant suction pipe 53 is the center of the upper cap 512 ( It can be located eccentrically from O) toward the compressor 10. For example, the refrigerant guide pipe 522, which forms a part of the refrigerant connecting pipe 52, is inserted to approximately the middle height of the cylindrical body 511 forming the refrigerant receiving space 51a, and the refrigerant suction pipe 53 The refrigerant flow pipe 531, which forms a part, may be fixed by welding both ends to the lower end and the upper cap 512 of the cylindrical body 511, respectively.

Specifically, the upper cap 512 according to this embodiment has a second piping hole 512c formed at its center (O), so that the refrigerant connection pipe 521, which forms part of the refrigerant connection pipe 52, is connected to the accumulator 50. ) can be inserted into the axis center (CL2). Accordingly, the upper cap 512 may be formed in a hemisphere or dome shape with a convex central portion, as in the above-described embodiments.

However, the upper cap 512 according to this embodiment is formed with a pipe fixing part 512c so that the second end 531b of the refrigerant flow pipe 531 is fixed, and the pipe fixing part 512c is formed with the upper cap 512. ) can be formed to be eccentrically positioned from the center toward the compressor 10.

In addition, a first piping hole 511a is formed at the bottom of the cylindrical body 511 according to this embodiment, and the first piping hole 511a is located eccentrically from the axial center CL2 of the accumulator 50, e.g. For example, it may be located between the axial center (CL1) of the compressor 10 and the axial center (CL2) of the accumulator 50. Accordingly, the lower surface of the cylindrical body 511 may be formed in a hemisphere or dome shape with the position corresponding to the axial center CL2 of the accumulator 50 being the most convex, as in the above-described embodiments, but the first pipe hole 511a ) may be formed in part or all of the lower surface in a flat shape.

As described above, the refrigerant connecting pipe 52 of the accumulator 50 according to the present embodiment is connected through the axial center (CL2) of the accumulator 50, so that the existing outdoor unit assembly line can be utilized as is, and the compressor (10) ) can facilitate the connection between the evaporator (40) and the evaporator (40).

In addition, the refrigerant suction pipe 53 of the accumulator 50 according to this embodiment is eccentrically moved from the axial center CL2 of the accumulator 50 toward the compressor 10 and connected, so the refrigerant suction pipe 53 The radial length L1 of the refrigerant suction pipe 532, which forms part of , becomes shorter. Through this, vibration transmitted from the compressor 10 through the refrigerant suction pipe 53 can be attenuated compared to the above-described embodiments.

Meanwhile, another example of an accumulator is as follows.

That is, in the above-described embodiments, the refrigerant suction pipe is formed by assembling the refrigerant flow pipe and the refrigerant suction pipe, but in some cases, the refrigerant flow pipe and the refrigerant suction pipe may be formed as a single body.

Figure 16 is a cross-sectional view showing another embodiment of the accumulator.

Referring to FIG. 16, the accumulator 50 according to this embodiment includes a case 51, a refrigerant connection pipe 52, and a refrigerant suction pipe 53. The basic configuration and resulting effects of the case 51, the refrigerant connecting pipe 52, and the refrigerant suction pipe 53 are similar to the above-described embodiment.

However, the refrigerant suction pipe 53 according to this embodiment may be made of a single pipe. For example, the refrigerant suction pipe 53 is formed of one refrigerant flow pipe 531, and one end of the refrigerant flow pipe 531 is fixed to the shell 110 of the compressor 10, while the refrigerant flow pipe 531 The other end may pass through the first piping hole 511a of the cylindrical body 511 and be inserted into and fixed to the piping fixing portion 512d of the upper cap 512.

In this case, the refrigerant flow pipe 531 forming the refrigerant suction pipe 53 may be formed of a steel pipe such as the cylindrical body 511 or the upper cap 512 of the accumulator 50, and the shell 110 of the compressor 10. It may be formed of a copper tube such as a connecting member () welded to ).

However, since welding must be performed while the second end (531b) of the refrigerant flow pipe 531 is inserted into the pipe fixing part 512d of the upper cap 512, the refrigerant flow pipe 531 is as close as possible to the accumulator ( It may be advantageous in terms of the assembly process to be formed of the same material as 50).

As described above, in the case where the refrigerant suction pipe 53 is composed of one refrigerant flow pipe 531, the assembly time is reduced compared to forming and assembling the refrigerant suction pipe 53 with the refrigerant flow pipe 531 and the refrigerant suction pipe 532. can be reduced, thereby lowering manufacturing costs.

In addition, since the refrigerant suction pipe 53 is formed as a single piece, even if the vibration of the compressor 10 is transmitted through the refrigerant suction pipe 53, there is less risk of damage to the refrigerant suction pipe 53, and reliability can be improved. .

Meanwhile, although not shown in the drawing, the accumulator 50 is formed in a shape where the upper end of the cylindrical body 511 is closed, but the lower end is open and covered with a separate lower cap (not shown), or both ends of the cylindrical body 511 This opening may be covered with an upper cap 512 and a lower cap (not shown), respectively. In these cases, the refrigerant connecting pipe 52 and the refrigerant suction pipe 53 are arranged in parallel so as to overlap each other in the longitudinal direction of the case 51, as in the previously described embodiments, and the refrigerant suction pipe 53 has both ends of the case. It can be fixed at (51). Since this is similar to the above-described embodiment, a detailed description thereof will be replaced with a description of the above-described embodiment.

Meanwhile, in the above-described embodiment, a single-cylinder rotary compressor was described as an example, but in some cases, a double rotary compressor in which the cylinder is arranged along the axial direction of the rotating shaft, as well as a hinge vane rotary compressor or vane rotary compressor, and a high-pressure compressor The same can be applied to high-pressure compressors such as type scroll compressors. Since this is the same as the above-described embodiment, a detailed description thereof will be replaced with a description of the above-described embodiment.

110: Shell 110a: Internal space
113: Refrigerant discharge pipe 115: Fixing bracket
120: electric motor 121: stator
1211: winding coil 122: rotor
125: rotation axis 130: compression unit
131: main bearing plate 1311: main plate part
1312: Main boss part 1313: Discharge port
1315: Discharge valve 132: Sub-bearing plate
1321: Subplate unit 1322: Subboss unit
133: cylinder 1331: intake port
1332: Vane slot 134: Rolling piston
135: vane 136: discharge muffler
50: Accumulator 51: Case
51a: Refrigerant receiving space 511: Cylindrical body
511a: first piping hole 511b: second piping hole
511c: Piping fixing part 512: Upper cap
512a: flat part 512b: inclined surface part
512c: second pipe hole 512d: pipe fixing part
512e: Third piping hole 52: Refrigerant connection pipe
521: Refrigerant connector 522: Refrigerant guide pipe
522a: first guide section 522b, 522b1, 522b2: second guide section
523: mesh screen 523a: screen support
53: Refrigerant suction pipe 531: Refrigerant flow pipe
531a: First stage of refrigerant flow pipe 531b: Second stage of refrigerant flow pipe
531c: Refrigerant through hole 531d: Oil through hole
532: Refrigerant suction pipe 533: Stopper member
CL1: Axial center of compressor CL2: Axial center of accumulator
CL3: Axial center of refrigerant connecting pipe CL4: Axial center of refrigerant suction pipe
L1: Radial length of refrigerant suction pipe O: Center of upper cap
V: compression chamber

Claims (17)

A case disposed outside the shell of the compressor and provided with a refrigerant receiving space;
a refrigerant connecting pipe at one end extending outside the refrigerant receiving space and at the other end communicating with the refrigerant receiving space;
a refrigerant suction pipe, one end of which communicates with the refrigerant receiving space of the case, the other end of which communicates with the suction side of the compressor, and both ends of which are respectively fixed to the lower and upper surfaces of the case forming the refrigerant receiving space; and
It includes a screen member provided at the other end of the refrigerant connecting pipe to filter out foreign substances flowing into the refrigerant receiving space,
The refrigerant connecting pipe is,
a first guide extending in the longitudinal direction of the case in the refrigerant receiving space; and
It includes a second guide portion bent and extended in one or both directions from the first guide portion,
The screen member is,
An accumulator for a compressor that is inserted into the first guide part and supported at a position where the second guide part is bent in the first guide part. According to paragraph 1,
An accumulator for a compressor in which a pipe fixing part for fixing one end of the refrigerant suction pipe is formed on the upper surface of the case. According to paragraph 2,
The pipe fixing part is,
An accumulator for a compressor in which one end of the refrigerant suction pipe is inserted by being depressed in a direction away from the refrigerant receiving space along the longitudinal direction of the case. According to paragraph 2,
The pipe fixing part is,
An accumulator for a compressor that protrudes toward the refrigerant receiving space along the longitudinal direction of the case and is inserted into one end of the refrigerant suction pipe. According to paragraph 2,
The pipe fixing part is,
An accumulator for a compressor consisting of a pipe hole penetrating in the longitudinal direction of the case so that the refrigerant suction pipe penetrates the case and is fixed therein. According to paragraph 2,
The pipe fixing part is an accumulator for a compressor formed on the axial center line of the case. According to paragraph 1,
An accumulator for a compressor in which at least a portion of the refrigerant suction pipe overlaps the refrigerant connection pipe in the longitudinal direction of the case. According to paragraph 1,
An accumulator for a compressor wherein the refrigerant suction pipe is disposed on the axial center line of the case, and the refrigerant connecting pipe is disposed eccentrically with respect to the axial center of the case. According to clause 8,
An accumulator for a compressor wherein the refrigerant connecting pipe is disposed closer to the axial center of the compressor than the refrigerant suction pipe. According to paragraph 1,
The other end of the refrigerant connecting pipe is open toward the refrigerant receiving space,
The refrigerant suction pipe is formed with at least one refrigerant through hole communicating with the refrigerant receiving space,
The refrigerant hole is,
An accumulator for a compressor that is formed to be higher than or equal to the other end of the refrigerant connecting pipe based on the longitudinal direction of the case. According to clause 10,
The refrigerant through hole is an accumulator for a compressor that is opened in a direction crossing the direction in which the refrigerant suction pipe faces the refrigerant connection pipe. According to paragraph 1,
In the above case,
a body whose lower end is covered and through which the refrigerant suction pipe is coupled, and whose upper end is open; and
Covering the top of the body and including an upper cap through which the refrigerant connection pipe passes,
In the upper cap,
An accumulator for a compressor in which a pipe fixing part is formed so that one end of the refrigerant suction pipe is inserted and fixed, and a through hole is formed on one side of the pipe fixing part to allow the refrigerant connection pipe to pass through and be coupled thereto. According to clause 12,
An accumulator for a compressor wherein the pipe fixing portion is formed at the center of the upper cap, and the through hole is formed eccentrically from the center of the upper cap toward the axial center of the compressor. According to clause 13,
The pipe fixing part is,
An accumulator for a compressor wherein the inner surface of the upper cap forming the refrigerant receiving space is recessed toward the outer surface of the upper cap, and one end of the refrigerant suction pipe is inserted into and fixed to the pipe fixing portion. According to clause 12,
The through hole is formed at the center of the upper cap, and the pipe fixing part is formed eccentrically from the center of the upper cap toward the axial center of the compressor or away from the axial center of the compressor. According to paragraph 1,
The refrigerant suction pipe is,
A refrigerant flow pipe accommodated in the refrigerant receiving space of the case; and
One end is in communication with the refrigerant flow pipe, and the other end includes a refrigerant suction pipe in communication with the suction side of the compressor,
The refrigerant flow pipe is,
An accumulator for a compressor whose longitudinal ends are respectively fixed to both longitudinal sides of the case. Shell with sealed interior space;
An electric motor provided in the inner space of the shell;
a compression unit provided in the inner space of the shell, driven by the electric unit, and compressing refrigerant and discharging it into the inner space of the shell; and
An accumulator disposed outside the shell, supported by the shell, and connected to the compression unit through the shell,
The accumulator is,
A compressor equipped with the accumulator for the compressor of any one of claims 1 to 16.