JP7472861B2 - Compressor - Google Patents

Description

The technology disclosed herein relates to a compressor.

There is known a compressor that includes an accumulator that separates a refrigerant into a liquid refrigerant and a gas refrigerant, and a compressor body that compresses the gas refrigerant separated by the accumulator. The accumulator is fixed to the compressor body via a mounting member such as a mounting band (Patent Document 1). Such compressors are widely used in air conditioners and freezers. In an air conditioner equipped with such a compressor, by enlarging the accumulator, a sub-accumulator can be omitted, and manufacturing costs can be reduced.

JP 2002-90004 A

The compressor body includes a motor, and vibrates as it compresses the gas refrigerant using the rotational power generated by the motor. The compressor further includes piping that supplies the gas refrigerant from the accumulator to the compressor body. One end of the piping is disposed inside the accumulator, and the other end of the piping is fixed to the compressor body. For this reason, the vibration of the compressor body is transmitted to the piping, and the portion of the piping that is disposed inside the accumulator vibrates inside the accumulator. Furthermore, the vibration of the compressor body is transmitted to the accumulator via the piping and mounting members. The accumulator (particularly the piping) is more likely to vibrate the farther it is from the center of rotation of the motor. A large accumulator is farther from the center of rotation of the motor than a small accumulator, and is more likely to vibrate, and a compressor equipped with a large accumulator has the problem of making a lot of noise.

The disclosed technology was developed in consideration of these points, and aims to provide a compressor that reduces noise at low cost.

A compressor according to one aspect of the present disclosure includes an accumulator body that separates a refrigerant into a liquid refrigerant and a gas refrigerant, an accumulator container that forms a space in which the accumulator body is stored, and a compressor body that compresses the gas refrigerant. A welded portion is formed on an outer peripheral surface of the accumulator container. The thickness of the portion of the accumulator container where the welded portion is formed is greater than the thickness of the other portion of the accumulator container where the welded portion is not formed. When a plane passing through the central axis of the accumulator container and the central axis of the compressor body is defined as a third plane, a plane passing through the central axis of the accumulator container and making an angle θ1 with the third plane of 45 degrees is defined as a first plane, and a plane passing through the central axis of the accumulator container and making an angle θ2 with the third plane of 45 degrees is defined as a second plane, an angle θ3 formed between the first plane and the second plane is 90 degrees, and the weld is formed in a region of the accumulator container that is farther from the compressor body between the first plane and the second plane, (claim 5) the farther region is within the range of the angle θ3 between the first plane and the second plane.

The disclosed compressor can reduce noise at low cost.

FIG. 1 is a vertical cross-sectional view showing a compressor according to a first embodiment. FIG. 2 is a side view showing the compressor of the first embodiment. FIG. 3 is a top view showing the compressor of the first embodiment.

The compressor according to the embodiment disclosed in the present application will be described below with reference to the drawings. Note that the following description does not limit the technology of the present disclosure. In addition, in the following description, the same components are given the same reference numerals, and duplicate descriptions will be omitted.

Figure 1 is a vertical cross-sectional view showing a compressor 10 of the first embodiment. The compressor 10 of the first embodiment includes a compressor body 1, a mounting leg 7, and an accumulator 8. The compressor body 1 includes a compressor housing 2, a shaft 3, a compression section 5, and a motor section 6. A sealed internal space 21 is formed inside the compressor housing 2. The internal space 21 is formed in a roughly cylindrical shape. The compressor housing 2 includes a discharge pipe 23. The discharge pipe 23 is joined to the compressor housing 2 so that one end is located at the top of the internal space 21 and the other end is located outside the internal space 21.

The shaft 3 is formed in a rod shape. The shaft 3 is disposed in the internal space 21 along a rotation axis 31 that overlaps with the central axis of the cylindrical internal space 21, and is supported by the compressor housing 2 so as to be rotatable around the rotation axis 31 as the central axis. The shaft 3 has a first eccentric portion 32 and a second eccentric portion 33. The first eccentric portion 32 and the second eccentric portion 33 are disposed at the bottom of the internal space 21 and fixed to the shaft 3. That is, the first eccentric portion 32 and the second eccentric portion 33 are supported by the compressor housing 2 so as to be rotatable around the rotation axis 31 via the shaft 3.

The compression section 5 is disposed in the lower part of the internal space 21 and surrounds the first eccentric part 32 and the second eccentric part 33 of the shaft 3. The compression section 5 is a so-called rotary type compression mechanism, and includes a first annular piston 51 and a second annular piston 52, and two flow paths 221 are formed. The first annular piston 51 fits into the first eccentric part 32 and revolves as the shaft 3 rotates. The second annular piston 52 fits into the second eccentric part 33 and revolves as the shaft 3 rotates. The compression section 5 compresses the refrigerant supplied through the two flow paths 221 by the revolution of the first annular piston 51 and the second annular piston 52, and supplies the compressed refrigerant to the space above the compression section 5 in the internal space 21.

The motor section 6 is disposed in the space above the compression section 5 in the internal space 21. The motor section 6 includes a rotor 61, a stator 62, and a plurality of windings 63. The rotor 61 is fixed to the shaft 3. The stator 62 is disposed in the internal space 21 so as to surround the rotor 61, and is fixed to the compressor housing 2. The stator 62 is formed with a plurality of teeth that protrude toward the rotor 61. The plurality of windings 63 are wound around each of the plurality of teeth.

The mounting leg 7 is formed in a roughly triangular plate shape. The mounting leg 7 is placed on the installation surface on which the compressor 10 is installed. The mounting leg 7 is arranged under the compressor housing 2 so that the surface along which the mounting leg 7 is placed is perpendicular to the central axis of the cylinder formed by the internal space 21. The mounting leg 7 is fixed to the compressor housing 2.

The accumulator 8 includes an accumulator container 71 and an accumulator body 72. An internal space 74 is formed inside the accumulator container 71. The internal space 74 is formed in a generally cylindrical shape. The accumulator container 71 is arranged so that the central axis 73 of the cylinder of the internal space 74 is perpendicular to the plane along which the installation surface of the compressor 10 is aligned, that is, so that the central axis 73 of the internal space 74 is parallel to the central axis of the compressor body 1.

The accumulator body 72 includes a low-pressure introduction pipe 75 and two low-pressure communication pipes 76. The low-pressure introduction pipe 75 is joined to the accumulator container 71 so that one end is located at the top of the internal space 74 and the other end is located outside the internal space 74. A flow path 78 is formed inside each of the two low-pressure communication pipes 76. The two low-pressure communication pipes 76 penetrate the accumulator container 71 so that one end of the flow path 78 is located at the top of the internal space 74 and the other end of the flow path 78 is located outside the internal space 74. Furthermore, the part of the two low-pressure communication pipes 76 that penetrates the accumulator container 71 is joined to the accumulator container 71 and fixed to the accumulator container 71. The upper end of the two low-pressure communication pipes 76 that is located in the internal space 74 is not fixed to the accumulator container 71, and may vibrate when vibration is transmitted to the two low-pressure communication pipes 76. Furthermore, the upper ends of the two low-pressure communication pipes 76 are open, and the flow paths 78 are connected to the upper part of the internal space 74 via the upper ends of the two low-pressure communication pipes 76. The portions of the two low-pressure communication pipes 76 that are disposed outside the internal space 74 penetrate the compressor housing 2 so that the other ends of the flow paths 78 are respectively connected to the flow paths 221 of the compressor main body 1. The portions of the two low-pressure communication pipes 76 that penetrate the compressor housing 2 are joined to the compressor housing 2 and fixed to the compressor housing 2.

Figure 2 is a side view showing the compressor 10 of the first embodiment. The accumulator vessel 71 includes a vessel body 81, a top portion 82, and a bottom portion 83. The vessel body 81 is formed in a cylindrical shape and has an upper opening 84 and a lower opening 85. The inside of the vessel body 81 is connected to the outside of the vessel body 81 via the upper opening 84, and is connected to the outside of the vessel body 81 via the lower opening 85. The top portion 82 closes the upper opening 84 of the vessel body 81, and is joined to the vessel body 81 by welding. The bottom portion 83 closes the lower opening 85 of the vessel body 81, and is joined to the vessel body 81 by welding.

The container body 81 is formed from a so-called electric welded pipe. The electric welded pipe is formed, for example, by rolling a steel plate into a tubular shape and welding the seam. In this embodiment, the steel plate is formed into a tubular shape so that two ends (a first part, which is one end, and a second part, which is the other end) of the steel plate are in contact with each other, and the two ends are joined to form the container body 81. A welded portion 86 is formed in the container body 81. The welded portion 86 is formed by welding to join the two ends of the steel plate formed into a tubular shape. Examples of welding include plasma welding and laser welding. The welded portion 86 is formed so as to protrude from the outer circumferential surface 87. A line segment 88 along which the welded portion 86 runs is parallel to the central axis 73 (see FIG. 1) of the accumulator container 71, and connects the upper opening 84 and the lower opening 85 of the container body 81. The portion of the container body 81 where the welded portion 86 is formed is formed from the welded portion 86 and the steel plate (base material) welded by the welded portion 86. The thickness of the portion of the container body 81 where the welded portion 86 is formed is greater than the thickness of the steel plate before welding, and is greater than the thickness of the portion of the container body 81 where the welded portion 86 is not formed. Because the portion of the container body 81 where the welded portion 86 is formed is thicker, it is less likely to deform when subjected to a force that tries to bend the welded portion 86, and the rigidity against a force that tries to bend the welded portion 86 is improved.

3, the accumulator 8 is arranged so that the welded portion 86 is arranged in a predetermined region 94. FIG. 3 is a top view showing the compressor 10 of the first embodiment. The region 94 is a region of the accumulator container 71 farther from the compressor body 1, and is arranged farther from the compressor body 1 than the first plane 95 and farther from the compressor body 1 than the second plane 96. The first plane 95 includes the central axis 73 of the accumulator container 71, and is arranged so that the angle θ1 between the first plane 95 and the third plane 97 is equal to 45 degrees. The third plane 97 includes the central axis 73 of the accumulator container 71 and the central axis of the internal space 21 of the compressor body 1, that is, includes the central axis 73 of the accumulator container 71 and the rotation axis 31 of the compressor body 1. The second plane 96 includes the central axis 73 of the accumulator vessel 71, and is disposed so that the angle θ2 between the second plane 96 and the third plane 97 is equal to 45 degrees. That is, the first plane 95 and the second plane 96 are disposed so that the angle θ3 between the first plane 95 and the second plane 96 is equal to 90 degrees. That is, the first plane 95 is a plane including one end of the region 94 among the planes including the central axis 73, and the second plane 96 is a plane including the other end of the region 94 among the planes including the central axis 73, and the angle θ3 between the first plane 95 and the second plane 96 is 90 degrees. In other words, the region 94 is disposed within the range of the angle θ3, and the welded portion 86 is disposed in the region of the accumulator vessel 71 farther from the compressor body 1 and is disposed within the range of the angle θ3.

The compressor 10 further includes an accumulator holder 91, a fixing band 92, and a rubber sheet 93. The accumulator holder 91 is disposed in the space between the compressor housing 2 and the accumulator 8, and is fixed to the compressor housing 2. The fixing band 92 is hung in the circumferential direction so as to surround the container body 81 of the accumulator container 71. Both ends of the fixing band 92 are fixed to the accumulator holder 91. The rubber sheet 93 is disposed between the accumulator container 71 and the fixing band 92. The rubber sheet 93 is sandwiched between the accumulator container 71 and the fixing band 92, and is in close contact with the accumulator container 71 and the fixing band 92. The rubber sheet 93 elastically deforms so that the rubber sheet 93 is in close contact with the accumulator container 71 and the fixing band 92 even when the welded portion 86 protrudes from the outer circumferential surface. The accumulator container 71 is fixed to the compressor housing 2 by fixing both ends of the fixing band 92 to the accumulator holder 91.

[Operation of Compressor 10]
The compressor 10 is provided in a refrigeration cycle device (not shown) and is used to circulate a refrigerant in the refrigeration cycle device. That is, a refrigerant is supplied to the internal space 74 of the accumulator 8 from a device in the refrigeration cycle device that is in a stage upstream of the accumulator 8 via a low-pressure introduction pipe 75. The refrigerant is separated into a liquid refrigerant and a low-pressure gas refrigerant in the internal space 74, the liquid refrigerant being stored in the lower part of the internal space 74, and the low-pressure gas refrigerant being stored in the upper part of the internal space 74. The low-pressure gas refrigerant stored in the upper part of the internal space 74 flows into a flow path 78 from one end of two low-pressure communication pipes 76 that is located in the upper part of the internal space 74, and is supplied to two flow paths 221 of the compressor main body 1.

The stator 62 of the motor section 6 of the compressor body 1 generates a rotating magnetic field in the space inside the stator 62 by appropriately applying a three-phase voltage to the multiple windings 63. The rotor 61 rotates about the rotating shaft 31 as a result of the generation of the rotating magnetic field. The motor section 6 rotates the shaft 3 about the rotating shaft 31 as the rotor 61 rotates about the rotating shaft 31. The first eccentric portion 32 and the second eccentric portion 33 revolve the first annular piston 51 and the second annular piston 52 as the shaft 3 rotates.

The compression section 5 draws in low-pressure gas refrigerant from the accumulator 8 through the two flow paths 221 as the first annular piston 51 and the second annular piston 52 revolve, and generates high-pressure gas refrigerant by compressing the drawn low-pressure gas refrigerant. The generated high-pressure gas refrigerant is supplied to the space between the compression section 5 and the motor section 6 in the internal space 21. The high-pressure gas refrigerant supplied to the space between the compression section 5 and the motor section 6 in the internal space 21 passes through a gap formed in the motor section 6 and is supplied to the space above the motor section 6 in the internal space 21. The high-pressure gas refrigerant supplied to the space above the motor section 6 in the internal space 21 is discharged to a device downstream of the compressor main body 1 in the refrigeration cycle device through the discharge pipe 23. When the refrigerant is compressed, the compression section 5 further vibrates as the first annular piston 51 and the second annular piston 52 revolve.

When the compression section 5 compresses the refrigerant, the compressor housing 2 vibrates and elastically deforms due to the revolution of the first annular piston 51 and the second annular piston 52. The vibration of the compressor housing 2 is transmitted to the two low-pressure communication pipes 76 because one end of each of the two low-pressure communication pipes 76 is fixed to the compressor housing 2. The portion of each of the two low-pressure communication pipes 76 that is disposed in the internal space 74 of the accumulator container 71 vibrates in the internal space 74 of the accumulator container 71 because the vibration of the compressor housing 2 is transmitted to the two low-pressure communication pipes 76. The vibration of the compressor housing 2 is further transmitted to the accumulator container 71 via the two low-pressure communication pipes 76 because the two low-pressure communication pipes 76 are fixed to the accumulator container 71. The vibration of the compressor housing 2 is further transmitted to the accumulator container 71 via the accumulator holder 91 and the fixing band 92 because the accumulator container 71 is fixed to the compressor housing 2 via the accumulator holder 91 and the fixing band 92. The accumulator container 71 vibrates and elastically deforms as the vibration of the compressor housing 2 is transmitted to the accumulator container 71. The accumulator container 71 has the welded portion 86 formed therein, which improves the rigidity of the portion of the accumulator container 71 where the welded portion 86 is formed, and the portion is less likely to deform. Since the portion of the accumulator container 71 where the welded portion 86 is formed is less likely to deform, the degree of deformation of the portion where the welded portion 86 is formed can be reduced, and the vibration generated by the deformation of the portion where the welded portion 86 is formed is reduced. The compressor 10 can reduce the level of noise generated by the vibration by reducing the vibration generated by the deformation of the portion of the accumulator container 71 where the welded portion 86 is formed.

[Comparative Example Compressor]
The compressor of the comparative example is the same as the compressor 10 of the above-described embodiment 1, except that the container body 81 of the accumulator container 71 of the compressor 10 of the above-described embodiment 1 is replaced with another container body. The replaced container body is formed in a cylindrical shape, similar to the above-described container body 81. Furthermore, the container body is formed so that no welds protruding from the outer circumferential surface are formed and the thickness is generally uniform.

The compressor of the comparative example operates in the same manner as the compressor 10 of the first embodiment described above. The compressor housing 2 of the comparative example vibrates and elastically deforms as the motor unit 6 rotates the shaft 3. The vibration of the compressor housing 2 is transmitted to the two low-pressure communication pipes 76 because one end of each of the two low-pressure communication pipes 76 is fixed to the compressor housing 2. The portion of each of the two low-pressure communication pipes 76 that is disposed in the internal space 74 of the accumulator container 71 vibrates in the internal space 74 of the accumulator container 71 as the vibration of the compressor housing 2 is transmitted to the two low-pressure communication pipes 76. The vibration of the two low-pressure communication pipes 76 is transmitted to the accumulator container 71 as the two low-pressure communication pipes 76 are fixed to the accumulator container 71. The vibrations of the compressor housing 2 are further transmitted to the accumulator container 71 because the accumulator container 71 is fixed to the compressor housing 2 via two low-pressure connecting pipes 76, an accumulator holder 91, and a fixing band 92.

The accumulator container 71 vibrates and elastically deforms as the vibrations of the compressor housing 2 are transmitted to the accumulator container 71. The vibrations of the accumulator container 71 include vibrations that are generated by elastic deformation of a portion of the accumulator container 71 in an area 94 that is farther from the compressor body 1. The natural frequency of the vibration is, for example, approximately equal to 1600 Hz. At this time, the accumulator container of the comparative compressor generates noise with a pitch equal to its natural frequency (1600 Hz) toward the side opposite the side facing the compressor body 1.

In the compressor 10 of the first embodiment, the welded portion 86 is formed in the region 94 of the accumulator vessel 71 that is far from the compressor body 1, so that the rigidity of the region 94 of the accumulator vessel 71 is improved and the region 94 is less likely to deform. In the compressor 10 of the first embodiment, the region 94 of the accumulator vessel 71 is less likely to deform, so that the degree to which the region 94 is deformed due to vibration of the compressor body 1 can be reduced compared to the compressor of the comparative example. In the compressor 10 of the first embodiment, the degree to which the region 94 is deformed is reduced, so that the vibration generated by the deformation of the region 94 can be reduced, and the noise generated from the region 94 can be reduced.

[Effects of the Compressor 10 of the First Embodiment]
The compressor 10 of the first embodiment includes an accumulator body 72 that separates a refrigerant into a liquid refrigerant and a gas refrigerant, an accumulator container 71 that forms an internal space 74 in which the accumulator body 72 is stored, and a compressor body 1 that compresses the gas refrigerant. The accumulator container 71 is fixed to the compressor body 1. The accumulator container 71 includes a container body 81 formed in a cylindrical shape, a top portion 82 that closes one end of the container body 81, and a bottom portion 83 that closes the other end of the container body 81. A welded portion 86 is formed on an outer circumferential surface 87 of the container body 81 by welding. The portion of the container body 81 where the welded portion 86 is formed is formed from the welded portion 86 and a base material welded by the welded portion 86, and the thickness of the portion of the container body 81 where the welded portion 86 is formed is greater than the thickness of the other portion of the container body 81 where the welded portion 86 is not formed.

In this case, the compressor 10 of the first embodiment can improve the rigidity of the accumulator container 71 by forming the welded portion 86 on the container body 81. The compressor 10 can make the accumulator container 71 less likely to deform by improving the rigidity of the accumulator container 71. The compressor 10 can reduce the degree to which the accumulator container 71 is deformed due to the vibration of the compressor body 1 because the accumulator container 71 is less likely to deform, and can make the accumulator container 71 less likely to vibrate. The compressor 10 can reduce the noise generated from the accumulator container 71 because the accumulator container 71 is less likely to vibrate. It is known that an electric resistance welded pipe formed using a thick steel plate has a higher rigidity than an electric resistance welded pipe formed using a thin steel plate. A thick steel plate has a higher material cost than a thin steel plate, and bending a thick steel plate is more costly than bending a thin steel plate. For this reason, thick electric resistance welded pipes are more expensive than thin electric resistance welded pipes. The compressor 10 of the first embodiment improves the rigidity of the accumulator vessel 71 by forming a welded portion 86 in the vessel body 81, and can improve the rigidity of the accumulator vessel 71 at a lower cost than by using a thick electric resistance welded pipe to improve the rigidity of the vessel body 81.

The welded portion 86 of the compressor 10 of the first embodiment is formed to connect the upper opening 84 and the lower opening 85 of the container body 81 on the outer circumferential surface 87 of the container body 81. In this case, the compressor 10 of the first embodiment can reduce the degree to which the vibration transmitted from the compressor main body 1 to the accumulator container 71 deforms the container body 81 by improving the rigidity of the container body 81, thereby reducing the noise generated from the container body 81.

The container body 81 of the compressor 10 of the first embodiment is formed by forming a steel plate into a tubular shape so that two ends (a first portion, which is one end, and a second portion, which is the other end) of the steel plate are in contact with each other, and the two ends are joined by a weld 86. In this case, the compressor 10 of the first embodiment improves the rigidity of the container body 81 by using the weld 86 formed when the container body 81 is formed, and the rigidity of the accumulator container 71 can be improved at low cost.

The welded portion 86 of the compressor 10 of the first embodiment is formed in an area 94 of the accumulator container 71 that is far from the compressor housing 2. In this case, the compressor 10 of the first embodiment can improve the rigidity of the area 94 of the accumulator container 71 that is far from the compressor housing 2, and can reduce noise generated from the area of the accumulator container 71 that is far from the compressor housing 2.

The compressor of the second embodiment is the same as the compressor 10 of the first embodiment described above, except that the vessel body 81 of the compressor 10 of the first embodiment described above is replaced with another vessel body. The vessel body is formed of a steel plate in a tubular shape such that two ends (a first part and a second part) of the steel plate overlap in the radial direction, and the first part and the second part are joined by a weld 86. At this time, the weld 86 is formed along a line segment 88 along the outer circumferential surface 87 of the vessel body, similar to the vessel body 81 described above. The thickness of the part of the vessel body where the weld 86 is formed is greater than the thickness of the part of the vessel body where the weld 86 is not formed, because the first part and the second part overlap.

The compressor of Example 2 operates in the same manner as the compressor 10 of Example 1 described above. The welded portion 86 of the compressor of Example 2 is thicker, has improved rigidity, and is less susceptible to deformation than the welded portion 86 of the compressor 10 of Example 1 described above, because the first and second portions overlap in the radial direction. Therefore, the compressor of Example 2 can further reduce vibrations generated at the welded portion 86 and can further reduce noise generated by the vibrations, compared to the compressor 10 of Example 1 described above.

The welded portion 86 described above is formed along a line segment 88 that is parallel to the central axis 73 of the internal space 74, but may be replaced with a welded portion that is not formed along the line segment 88. An example of such a welded portion is a welded portion formed along a helical winding (spiral) along the outer circumferential surface of the container body 81. Both ends of the welded portion 86 described above are connected to the upper opening 84 and the lower opening 85 of the container body 81, but the multiple welded portions do not have to be connected to the upper opening 84 or the lower opening 85. In addition, the welded portion 86 is disposed in a region 94 of the accumulator container 71 that is far from the compressor body 1, but may be disposed in a region of the accumulator container 71 that is different from the region 94. Although one welded portion 86 is formed in the accumulator container 71 described above, other welded portions different from the welded portion 86 may be further formed. Even in such a case, the compressor has welded parts, which allows the rigidity of the accumulator container 71 to be improved at low cost and noise caused by vibration of the accumulator container 71 to be reduced at low cost.

The accumulator vessel 71 described above is formed of three pieces, the vessel body 81, the top portion 82, and the bottom portion 83, but it may be formed of two or fewer pieces, or may be formed of four or more pieces. Even in such a case, the compressor can improve the rigidity of the accumulator vessel 71 at low cost and reduce noise caused by vibration of the accumulator vessel 71 at low cost by providing the welded portion 86 on the accumulator vessel 71.

The compressor body 1 described above is formed from a two-cylinder type rotary compressor, but may be formed from a rotary compressor of a different type from the two-cylinder type. An example of a rotary compressor of a different type is a one-cylinder type rotary compressor having one cylinder. The compressor body 1 described above is formed from a rotary type compression mechanism, but may be formed from a compression mechanism of a different type from the rotary type. An example of a compression mechanism of a different type is a scroll type compression mechanism. Even in such a case, the compressor has a welded portion 86 provided in the accumulator container 71, so that the rigidity of the accumulator container 71 can be improved at low cost and the noise caused by the vibration of the accumulator container 71 can be reduced at low cost.

Although the embodiments have been described above, the embodiments are not limited to the above. The above-described components include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the above-described components can be combined as appropriate. Furthermore, at least one of various omissions, substitutions, and modifications of the components can be made without departing from the spirit of the embodiments.

10: Compressor 1: Compressor body 2: Compressor housing 8: Accumulator 71: Accumulator vessel 72: Accumulator body 81: Vessel body 82: Top portion 83: Bottom portion 86: Welded portion

Claims (7)

an accumulator body that separates a refrigerant into a liquid refrigerant and a gas refrigerant;
an accumulator container that forms a space in which the accumulator body is stored;
a compressor body that compresses the gas refrigerant,
The accumulator container is fixed to the compressor body,
A weld is formed on the outer circumferential surface of the accumulator vessel,
a thickness of a portion of the accumulator container where the welded portion is formed is greater than a thickness of another portion of the accumulator container where the welded portion is not formed,
a plane passing through the central axis of the accumulator container and the central axis of the compressor main body is defined as a third plane, a plane passing through the central axis of the accumulator container and making an angle θ1 with the third plane of 45 degrees is defined as a first plane, and a plane passing through the central axis of the accumulator container and making an angle θ2 with the third plane of 45 degrees is defined as a second plane, an angle θ3 between the first plane and the second plane is 90 degrees,
the welded portion is formed in a region of the accumulator container that is farther from the compressor body than the first plane and the second plane,
The far side region is within an angle θ3 between the first plane and the second plane.
Compressor. At least a part of the weld is formed on a straight line connecting a central axis of the accumulator container and a central axis of the compressor body when viewed in the axial direction of the compressor.
The compressor according to claim 1 . The accumulator vessel comprises:
A container body portion formed in a cylindrical shape;
a top portion that closes an opening at one end of the container body;
a bottom portion that closes an opening at the other end of the container body,
The compressor according to claim 1 , wherein the welded portion is formed along a line segment connecting the opening on the one end side and the opening on the other end side . The welded portion is formed over the entire container body in the up-down direction.
The compressor according to claim 3. 5. The compressor according to claim 1, wherein a seam between a first portion of a container body that forms the outer circumferential surface of the accumulator container and a second portion of the container body that is different from the first portion is joined via the weld. The compressor of claim 5 , wherein the first portion overlaps the second portion. Another welded portion is further formed on the outer circumferential surface by welding,
The compressor according to claim 1 , wherein a thickness of the other portion of the accumulator container where the other welded portion is formed is greater than a thickness of the other portion.

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