Hermetic compressor and outdoor unit

Abstract

To suppress freezing of a support member supporting a compressor main body container and an accumulator container.SOLUTION: In a hermetic compressor, a cylindrical accumulator container is connected to the lower part of a vertical cylindrical compressor main body container in the vertical direction of the compressor main body container. The hermetic compressor comprises a leg member supporting the compressor main body container and the accumulator container. The leg member has a fixed portion fixed to at least one of the outer peripheries of the compressor main body container and the accumulator container, and a holding portion holding an elastic body which supports the compressor main body container, and the holding portion is located lower than the fixed portion in the vertical direction. An accumulator space portion, which is an internal space communicating with a suction pipe, is formed inside the accumulator container. When viewing the accumulator container from the radially outside to the inside, the outer peripheral surface of the accumulator container has a first region which overlaps with the accumulator space portion, and an inner outer peripheral surface portion is formed in the first region, which is located closer to the central axis side along the vertical direction than the outer peripheral surface of the compressor main body container.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a hermetic compressor and an outdoor unit. [Background technology]

[0002] Known hermetic compressors include a vertical cylindrical compressor main body container that houses a compression section and a motor for driving the compression section, and a vertical cylindrical accumulator container that separates a refrigerant into a gas refrigerant and a liquid refrigerant and supplies the gas refrigerant to the compression section, and is connected to the compressor main body container via a refrigerant pipe. Examples of hermetic compressors include one in which the accumulator containers are arranged side by side on the outer periphery of the side wall surface of the compressor main body container, as exemplified in Patent Document 1 (hereinafter also referred to as a "parallel accumulator compressor"), and one in which the accumulator containers are arranged vertically below the compressor main body container, as exemplified in Patent Document 2 (hereinafter also referred to as a "series accumulator compressor"). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-17694 A [Patent Document 2] JP 2020-109283 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, the hermetic compressor used in the refrigeration cycle device was exclusively a compressor with parallel accumulators. In contrast, the compressor with serial accumulators exists only conceptually, and no actual compressor with serial accumulators used in the refrigeration cycle device has existed until now. The inventor of the present invention prototyped a refrigeration cycle device equipped with the above-mentioned compressor with serial accumulators and conducted an operation test. As a result, the inventor discovered a problem that, when the compressor with serial accumulators is operated under low outdoor air temperature, the accumulator container becomes cold due to the gas refrigerant inside, and frost forms on the outer surface of the accumulator container due to moisture around the accumulator container, causing the piping connected to the accumulator container located vertically below the compressor body and even the support member that directly supports the accumulator container and indirectly supports the compressor body from below may be covered with frost.

[0005] Such a problem did not occur in a refrigeration cycle apparatus equipped with a conventional accumulator-parallel-arranged compressor. As shown in Fig. 16, in a refrigeration cycle apparatus equipped with a accumulator-parallel-arranged compressor 501, even if frost f occurs and freezes in an accumulator vessel 504, a portion of a refrigerant pipe 505 (e.g., a gas-liquid separation tube) connecting the accumulator vessel 504 and a compressor main vessel 503, which is close to the compressor main vessel 503, is warmed by heat transferred from the compressor main vessel 503, the inside of which is at a high temperature. Furthermore, even if the frost f occurring in the accumulator vessel 504 grows, it must pass through the outer surface of the compressor main vessel 503, which is at a high temperature because the compressor main vessel 503 includes a compression section 506 that is at a high temperature, and therefore the grown frost f does not reach a support member 507 that supports the compressor main vessel 503 from below.

[0006] In contrast, in a refrigeration cycle apparatus equipped with accumulator series-arranged compressor 502, as shown in FIG. 17, when frost forms and freezes in accumulator container 508, even if a portion of refrigerant piping 505 (e.g., a gas-liquid separation tube) connecting accumulator container 508 and compressor main body container 503 close to compressor main body container 503 is heated, since compressor main body container 503 which has a higher temperature is located above accumulator container 508, frost f formed in accumulator container 508 is not prevented from growing downward, and there is a risk that frost f growing from the outer surface of accumulator container 508 will reach support member 507.

[0007] If the frost f formed around accumulator container 508 grows to the support member 507 that supports compressor main body container 503 from below or to a component of the outdoor unit of the air conditioner that houses the support member 507 (for example, the casing of the outdoor unit), the vibration of the compressor may be transmitted to the outdoor unit via the frost, increasing the vibration of the outdoor unit. Also, for example, if the elastic body of support member 507 freezes, the elastic body deteriorates and loses elasticity, making it impossible for the elastic body to properly absorb the vibration of the compressor and sufficiently suppress the vibration.

[0008] The disclosed technology has been made in consideration of the above, and aims to provide a hermetic compressor and outdoor unit that can prevent the support members that support the compressor main body container and the accumulator container from freezing. [Means for solving the problem]

[0009] One aspect of the hermetic compressor disclosed in the present application includes a vertical cylindrical compressor main container provided with a refrigerant discharge pipe and a suction pipe, a cylindrical accumulator container connected to the suction pipe, and a compression section disposed in the compressor main container for compressing the refrigerant drawn from the accumulator container through the suction pipe and discharging it from the discharge pipe, the accumulator container being connected to a lower part of the compressor main container in the vertical direction of the compressor main container. The hermetic compressor includes a leg member. The leg member has a fixing part fixed to at least one of the outer peripheral surface of the compressor main container and the outer peripheral surface of the accumulator container, and a holding part for holding an elastic body supporting the hermetic compressor. The holding part is located below the fixing part in the vertical direction. An accumulator space part is formed inside the accumulator container, which is an internal space communicating with the suction pipe. The outer peripheral surface of the accumulator container has a first region overlapping with the accumulator space portion, and the first region has an inner outer peripheral surface portion located closer to the central axis in the up-down direction than the outer peripheral surface of the compressor main body container. Effect of the Invention

[0010] According to one aspect of the hermetic compressor disclosed in the present application, the support members that support the compressor main body container and the accumulator container can be prevented from freezing. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a vertical cross-sectional view showing a rotary compressor according to a first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view showing a compression unit of the rotary compressor of the first embodiment. [Diagram 3] FIG. 3 is a plan view showing the rotary compressor of the first embodiment. [Figure 4] FIG. 4 is a vertical cross-sectional view showing a main part of the first embodiment. [Diagram 5] FIG. 5 is a perspective view showing a state in which a heat insulating material is provided in an accumulator vessel as a first modified example of the first embodiment. [Figure 6] FIG. 6 is a perspective view showing a fixed state of the leg member via an intervening member as a second modified example of the first embodiment. [Figure 7] FIG. 7 is a vertical cross-sectional view showing a main part of the second embodiment. [Figure 8] FIG. 8 is a vertical cross-sectional view showing a main part of the third embodiment. [Figure 9] FIG. 9 is a vertical cross-sectional view showing a main part of the fourth embodiment. [Figure 10] FIG. 10 is a vertical cross-sectional view showing a main part of the fifth embodiment. [Figure 11] FIG. 11 is a vertical cross-sectional view showing a main part of the sixth embodiment. [Figure 12] FIG. 12 is a vertical cross-sectional view showing a main part of the seventh embodiment. [Figure 13] FIG. 13 is a perspective view showing a main part of the eighth embodiment. [Figure 14] FIG. 14 is a vertical cross-sectional view showing a main part of the ninth embodiment. [Figure 15] FIG. 15 is a schematic diagram showing the outdoor unit of the embodiment. [Figure 16] FIG. 16 is a schematic diagram showing a state in which frost has formed on an accumulator in a refrigeration cycle apparatus including a conventional accumulator-parallel-arranged compressor. [Figure 17] FIG. 17 is a schematic diagram showing a state in which frost has formed on an accumulator in a refrigeration cycle apparatus including a conventional accumulator-in-series type compressor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the hermetic compressor and the outdoor unit disclosed in the present application will be described in detail with reference to the drawings. Note that the hermetic compressor and the outdoor unit disclosed in the present application are not limited to the following embodiments. EXAMPLES

[0013] (Configuration of a rotary compressor) In this embodiment, a rotary compressor will be described as an example of a compressor. Fig. 1 is a vertical cross-sectional view showing the rotary compressor of the embodiment. Fig. 2 is an exploded perspective view showing a compression section of the rotary compressor of the embodiment.

[0014] As shown in FIG. 1, the rotary compressor 1 is an internal high pressure type hermetic compressor that accommodates a compression section 12 inside a compressor main body container 10, which draws in refrigerant from a compression section suction pipe 102 and discharges the compressed refrigerant into the inside of the compressor main body container 10, and a motor 11 that drives the compression section 12, and discharges the high pressure refrigerant compressed in the compression section 12 into the inside of the compressor main body container 10 and further into the refrigeration cycle through a discharge pipe 107.

[0015] The compressor main body container 10 has a vertical cylindrical main shell 10a, a cup-shaped top shell 10b, and a cup-shaped bottom shell 10c, and is constructed by fixing an opening side 10g of the top shell 10b to an upper end of the main shell 10a by welding at a first weld V, and fixing an opening side 10d of the bottom shell 10c to a lower end of the main shell 10a by welding at a second weld W.

[0016] A compression section suction pipe 102 for sucking low-pressure refrigerant of the refrigeration cycle into the compression section 12 is provided penetrating the main shell 10a. More specifically, a guide pipe 101 is fixed to the main shell 10a by brazing, and the compression section suction pipe 102 passes through the inside of the guide pipe 101 and is fixed to the guide pipe 101 by brazing.

[0017] A discharge pipe 107 for discharging the high-pressure refrigerant compressed in the compression section 12 from the inside of the compressor main body vessel 10 to the refrigeration cycle is provided penetrating the top shell 10b. The discharge pipe 107 is directly fixed to the top shell 10b by brazing.

[0018] An accumulator container 25 is provided below the compressor main body container 10 to separate the gas and liquid of the low-pressure refrigerant drawn from the refrigeration cycle and draw only the gas refrigerant into the compression section 12. In detail, the accumulator container 25 is formed by fixing the opening side 26a of a cup-shaped accumulator shell 26 to the bottom side 10e of the bottom shell 10c (opposite side to the opening side 10d of the bottom shell 10c, hereinafter also referred to as the counter opening side of the bottom shell 10c) by welding at a third weld X at a position below the second weld W of the main shell 10a and the bottom shell 10c in the compressor main body container 10, thereby sealing the inside of the accumulator shell 26. The shape of the bottom shell 10c will be described in detail later.

[0019] An accumulator suction pipe 27 that draws refrigerant from the refrigeration cycle into the accumulator container 25, and a gas-liquid separation pipe 31 that sends gaseous refrigerant from the inside of the accumulator container 25, each penetrate the accumulator shell 26 and are fixed to the accumulator shell 26 by brazing.

[0020] The gas-liquid separation pipe 31 is connected to the compression section suction pipe 102 via a connecting pipe 104 outside the accumulator vessel 25 .

[0021] A base member 310 that supports the entire rotary compressor 1 is fixed to the lower part of the accumulator shell 26 by welding.

[0022] The compression section 12 has a cylinder 121, an upper end plate 160T, a lower end plate 160S, and a rotating shaft 15, and the upper end plate 160T, the cylinder 121, and the lower end plate 160S are stacked in order and fixed by a plurality of bolts 175. The upper end plate 160T is provided with a main bearing portion 161T. The lower end plate 160S is provided with a sub-bearing portion 161S. The rotating shaft 15 is provided with a main shaft portion 153, an eccentric portion 152, and a sub-shaft portion 151. The main shaft portion 153 of the rotating shaft 15 is engaged with the main bearing portion 161T of the upper end plate 160T, and the sub-shaft portion 151 of the rotating shaft 15 is engaged with the sub-bearing portion 161S of the lower end plate 160S, so that the rotating shaft 15 is supported so as to be freely rotatable.

[0023] The motor 11 has a stator 111 disposed on the outside and a rotor 112 disposed on the inside. The stator 111 is fixed to the inner circumferential surface of the main shell 10a by shrink fitting. The rotor 112 is fixed to the rotating shaft 15 by shrink fitting.

[0024] The inside of the compressor main body container 10 is filled with lubricating oil 18 in an amount that nearly immerses the compression section 12, for lubricating the sliding members of the compression section 12 and for sealing between the high pressure and low pressure sections within the compression chamber.

[0025] Next, the compression unit 12 will be described in detail with reference to FIG. The cylinder 121 has a cylindrical hollow portion 130 therein, and a piston 125 is disposed in the hollow portion 130. The piston 125 is engaged with an eccentric portion 152 of the rotary shaft 15. The cylinder 121 has a groove extending outward from the hollow portion 130, and a vane 127 is disposed in the groove. The cylinder 121 has a spring hole 124 that connects to the groove from the outer periphery, and a spring 126 is disposed in the spring hole 124. One end of the vane 127 is pressed against the piston 125 by the spring 126, so that the space outside the piston 125 in the hollow portion 130 of the cylinder 121 is divided into a suction chamber 133 and a discharge chamber 131. The cylinder 121 has a suction hole 135 that communicates with the suction chamber 133 from the outer periphery. The suction hole 135 is connected to the compression section suction pipe 102. The upper end plate 160T is provided with a discharge hole 190 that penetrates the upper end plate 160T and communicates with the discharge chamber 131. A discharge valve 200 that opens and closes the discharge hole 190 and a discharge valve holder 201 that regulates the warping of the discharge valve 200 are fixed to the upper end plate 160T by rivets 202. An upper end plate cover 170 that covers the discharge hole 190 is disposed on the upper side of the upper end plate 160T, and an upper end plate cover chamber 180 that is closed by the upper end plate 160T and the upper end plate cover 170 is formed. The upper end plate cover 170 is fixed to the upper end plate 160T by a plurality of bolts 175 that fix the upper end plate 160T and the cylinder 121. The upper end plate cover 170 is provided with an upper end plate cover discharge hole 172 that communicates the upper end plate cover chamber 180 with the inside of the compressor main body container 10.

[0026] The flow of the refrigerant sucked in by the rotation of the rotary shaft 15 will be described below. The rotation of the rotary shaft 15 causes the piston 125 fitted to the eccentric portion 152 of the rotary shaft 15 to revolve, and the suction chamber 133 draws in the refrigerant while expanding its volume. As a suction path for the refrigerant, the low-pressure refrigerant of the refrigeration cycle is drawn into the inside of the accumulator container 25 through the accumulator suction pipe 27. If the refrigerant drawn into the accumulator container 25 contains liquid, it accumulates in the lower part of the accumulator container 25, and only the gaseous refrigerant is drawn into the gas-liquid separation pipe 31 that opens upward inside the accumulator container 25. The gaseous refrigerant drawn into the gas-liquid separation pipe 31 is drawn into the suction chamber 133 through the connecting pipe 104 and the compression section suction pipe 102. If the amount of liquid refrigerant drawn from the refrigeration cycle is large, the liquid level of the liquid refrigerant in the accumulator container 25 may rise above the open end 31b of the gas-liquid separation pipe 31, and a large amount of the liquid refrigerant may flow into the gas-liquid separation pipe 31. If a large amount of liquid refrigerant flows into the compression section 12 through the gas-liquid separation pipe 31, it may damage the compression section 12. In order to prevent a large amount of liquid refrigerant from flowing into the gas-liquid separation pipe 31, the gas-liquid separation pipe 31 is provided with a liquid return hole 34 for sucking the liquid refrigerant into the gas-liquid separation pipe 31 little by little.

[0027] Next, the flow of the discharged refrigerant caused by the rotation of the rotary shaft 15 will be described. When the pressure of the compressed refrigerant becomes higher than the pressure in the upper end plate cover chamber 180 outside the discharge valve 200, the discharge valve 200 opens and discharges the refrigerant from the discharge chamber 131 to the upper end plate cover chamber 180. The refrigerant discharged to the upper end plate cover chamber 180 is discharged into the compressor main body container 10 from the upper end plate cover discharge hole 172 provided in the upper end plate cover 170.

[0028] The refrigerant discharged into the compressor main body container 10 is guided to the top of the motor 11 through a notch (not shown) that communicates the top and bottom provided on the outer periphery of the stator 111, or a gap (not shown) in the winding part of the stator 111, or a gap 115 (see Figure 1) between the stator 111 and the rotor 112, and is discharged to the refrigeration cycle from a discharge pipe 107 provided in the top shell 10b.

[0029] Next, the flow of the lubricating oil 18 will be described. The lubricating oil 18 sealed in the lower part of the compressor main body container 10 is supplied to the compression section 12 through the inside of the rotating shaft (not shown) by the centrifugal force of the rotating shaft. The lubricating oil 18 supplied to the compression section 12 is mixed with the refrigerant and discharged into the inside of the compressor main body container 10 together with the refrigerant in a mist form. The mist-formed lubricating oil 18 discharged into the inside of the compressor main body container 10 is separated from the refrigerant by centrifugal force caused by the rotational force of the motor 11, and returns to the lower part of the compressor main body container 10 as oil droplets. However, some of the lubricating oil 18 is not separated and is discharged into the refrigerant together with the refrigerant in the refrigeration cycle. The lubricating oil 18 discharged into the refrigeration cycle circulates through the refrigeration cycle and returns to the accumulator container 25, where it is separated inside the accumulator container 25 and accumulates in the lower part of the accumulator container 25. The lubricating oil 18 accumulated in the lower part of the accumulator container 25 flows little by little into the gas-liquid separation pipe 31 through the liquid return hole 34 together with the liquid refrigerant, and is sucked into the suction chamber 133 together with the suction refrigerant.

[0030] (Characteristic structure of a rotary compressor) Next, the features of the rotary compressor 1 of the first embodiment will be described. The features of this embodiment include the shape of the accumulator container 25 and a support member (structural member that serves to support the rotary compressor 1) of the rotary compressor 1 having a leg member 309 and an elastic body 311, as shown in Fig. 1. Fig. 3 is a plan view showing the rotary compressor of the first embodiment. Fig. 4 is a vertical cross-sectional view showing a main part of the first embodiment.

[0031] 1 and 4, a reduced diameter portion 10f having an outer diameter smaller than the outer diameter of an upper end side (opening side) 10d of the bottom shell 10c is formed on the bottom surface side (opposite opening side) 10e of the bottom shell 10c of the compressor main body container 10 in the embodiment 1. The reduced diameter portion 10f of the bottom shell 10c is fitted into the upper end side (opening side) 26a of the accumulator shell 26 of the accumulator container 25, and the upper end side (opening side) 26a of the accumulator shell 26 is fixed to the outer circumferential surface of the reduced diameter portion 10f of the bottom shell 10c by welding at a third welded portion X.

[0032] An accumulator space 36, which is an internal space that communicates with the compression section suction pipe 102 via the gas-liquid separation pipe 31 and the connecting pipe 104, is formed inside the accumulator vessel 25 located below the anti-opening side 10e of the bottom shell 10c. In the first embodiment, the accumulator space 36 is formed by being surrounded by the cup-shaped accumulator shell 26 and the bottom side (anti-opening side) 10e of the bottom shell 10c of the compressor main body vessel 10. The accumulator space 36 also communicates with the accumulator suction pipe 27.

[0033] Therefore, as shown in FIG. 4, when the accumulator container 25 is viewed from the outside to the inside in the radial direction, the outer peripheral surface 25s of the accumulator container 25 has a first region R1 that overlaps with the accumulator space portion 36, and a second region R2 that is located above the first region R1.

[0034] In the first region R1 of the outer peripheral surface 25s of the accumulator vessel 25, an inner outer peripheral surface portion 25t is formed, which is located on the central axis C side along the up-down direction of the accumulator vessel 25 from the outer peripheral surface 10s of the compressor main body vessel 10 in the radial direction of the accumulator vessel 25. The inner outer peripheral surface portion 25t in the first embodiment is formed over the entire circumferential direction of the outer peripheral surface 25s of the accumulator vessel 25. The second region R2 in the first embodiment is a region where the reduced diameter portion 10f of the bottom shell 10c and the opening side 26a of the accumulator shell 26 overlap. The outer diameter of the second region R2 on the outer peripheral surface 25s of the accumulator vessel 25 is equal to the outer diameter of the first region R1. Note that the outer peripheral surface 10s of the compressor main body vessel 10 in the disclosure of the present application is the outer peripheral surface with the maximum outer diameter in the compressor main body vessel 10, and refers to the outer peripheral surface of the main shell 10a.

[0035] Therefore, in the radial direction of the accumulator vessel 25, the entire outer peripheral surface 25s of the accumulator vessel 25 is located closer to the central axis C of the accumulator vessel 25 than the outer peripheral surface 10s of the compressor main body vessel 10. In other words, the outer diameter of the accumulator vessel 25 is smaller than the outer diameter of the compressor main body vessel 10. As a result, in the radial direction of the accumulator vessel 25, a space (non-contact space portion G) is secured between the first region R1 in the outer peripheral surface 25s of the accumulator vessel 25 and the support members (the leg members 309, the elastic body 311).

[0036] As shown in Fig. 1, Fig. 3 and Fig. 4, the rotary compressor 1 includes three leg members 309, which are support members for supporting the compressor main body container 10 and the accumulator container 25, and an elastic body 311 held by each leg member 309. The leg members 309 include a fixed portion 309a fixed to at least one of the outer peripheral surface 10s of the compressor main body container 10 and the outer peripheral surface 25s of the accumulator container 25, a holding portion 309b for holding the elastic body 311 supporting the rotary compressor 1, and a connecting portion 309c for connecting the fixed portion 309a and the holding portion 309b, and the holding portion 309b is located below the fixed portion 309a in the up-down direction of the compressor main body container 10. The leg members 309 in the first embodiment are formed by bending a metal plate into an L-shape. Further, the leg members 309 are fixed to the outer peripheral surface 10s of the compressor main body vessel 10, and support the compressor main body vessel 10 and the accumulator vessel 25 connected to the compressor main body vessel 10.

[0037] The leg member 309 has a fixing portion 309a fixed to at least one of the outer peripheral surface 10s of the compressor main body container 10 and the outer peripheral surface 25s of the accumulator container 25, with the leg member 309 not in contact with the first region R1 of the outer peripheral surface 25s of the accumulator container 25. This prevents the leg member 309 from being directly cooled by the first region R1 of the outer peripheral surface 25s cooled by the low-temperature refrigerant inside the accumulator space portion 36.

[0038] The fixing portion 309a is formed at the upper end of the leg member 309 in the up-down direction of the compressor main body vessel 10. The fixing portion 309a is located above the upper end of the first region R1 on the outer peripheral surface 25s of the accumulator vessel 25. The fixing portion 309a in the first embodiment is located above the upper end of the second region R2 on the outer peripheral surface 25s of the accumulator vessel 25, and is joined to the outer peripheral surface 10s of the compressor main body vessel 10 (the outer peripheral surface of the lower end of the main shell 10a) by a fourth welded portion Y. The fixing portion 309a is formed in an arc shape along the circumferential direction of the outer peripheral surface 10s of the compressor main body vessel 10, and is fixed along the outer peripheral surface 10s.

[0039] The connection portion 309c has a first connection portion 309c1 extending along the vertical direction, which is the up-down direction of the compressor main body container 10, and a second connection portion 309c2 extending from the lower end of the first connection portion 309c1 along a horizontal direction perpendicular to the vertical direction.

[0040] Further, the first connection portion 309c1 of the connection portion 309c is extended from the fixed portion 309a to a position lower than the upper end of the first region R1 (in other words, the lower end of the second region R2) on the outer circumferential surface 25s of the accumulator container 25. This lengthens the path of frost generated in the first region of the accumulator container 25, which becomes cold, along the surfaces of the members (e.g., the accumulator shell 26, the bottom shell 10c, the main shell 10a, and the leg member 309) constituting the rotary compressor 1 until it reaches the holding portion 309b of the leg member 309, and suppresses heat transfer via the fixed portion 309a and the connection portion 309c between the first region R1, which becomes particularly cold on the outer circumferential surface 25s of the accumulator container 25, and the holding portion 309b, thereby suppressing freezing of the leg member 309 and the elastic body 311. Furthermore, even if frost forms near fixed portion 309a of leg member 309, the distance that the frost travels along the surface of the leg member 309 from fixed portion 309a to holding portion 309b is long, so that even if the frost spreads along the surface of leg member 309, it can be prevented from reaching holding portion 309b and elastic body 311.

[0041] As described above, since the inner outer peripheral surface portion 25t of the accumulator container 25 is formed over the entire circumferential direction of the outer peripheral surface 25s of the accumulator container 25, it is possible to easily obtain a structure in which the entire leg member 309 is out of contact with the first region R1 of the outer peripheral surface 25s of the accumulator container 25. In addition, since a space (non-contact space portion G) is secured between the first connecting portion 309c1 of the leg member 309 and the first region R1 of the outer peripheral surface 25s of the accumulator container 25, it is possible to prevent frost formed on the outer peripheral surface 25s of the accumulator container 25 from reaching the leg member 309. In addition, in the first embodiment, like the first region R1, the entire leg member 309 is also out of contact with the second region R2.

[0042] The retaining portion 309b in the first embodiment is formed in the second connecting portion 309c2, and is located lower than the portion to which the accumulator suction pipe 27 is connected in the accumulator vessel 25 and the portion to which the gas-liquid separation pipe 31 is connected in the accumulator vessel 25. This makes it possible to lengthen the path that frost generated in the accumulator vessel 25, which becomes cold, travels along the surfaces of the members constituting the rotary compressor 1 (for example, the accumulator shell 26, the bottom shell 10c, the main shell 10a, and the leg members 309) until it reaches the retaining portion 309b of the leg members 309.

[0043] The holding portion 309b has a holding hole 309d into which the cylindrical elastic body 311 is fitted. The elastic body 311 held by the holding portion 309b of the leg member 309 is disposed at a position outside the outer circumferential surface of the accumulator container 25 in the radial direction of the accumulator container 25 and away from the accumulator container 25, thereby preventing the elastic body 311 from coming into contact with the accumulator container 25. This makes it possible to prevent the elastic body 311 from being directly cooled by the low-temperature accumulator container 25.

[0044] In addition, the lower end of the elastic body 311 is located below the lower end of the bottom side 26b (also referred to as the counter-opening side, which is the side opposite to the opening side 26a of the accumulator shell 26) of the accumulator shell 26. Therefore, the accumulator container 25 can be made to be out of contact with the bottom plate 352 of the outdoor unit 350 on which the elastic body 311 is placed, and the bottom plate 352 can be prevented from being directly cooled by the low-temperature accumulator container 25. In addition, since the lower end of the elastic body 311 is located below the lower end of the bottom side 26b of the accumulator shell 26, when the rotary compressor 1 is fixed to the bottom plate 352 of the outdoor unit 350 via the elastic body 311, the elastic body 311 can be directly attached to the bottom plate 352. If the lower end of the elastic body 311 is located above the lower end of the bottom surface side 26b of the accumulator shell 26, the lower end of the elastic body 311 and the bottom plate 352 of the outdoor unit 350 are separated from each other, and therefore the elastic body 311 needs to be attached to the bottom plate 352 via a separate member (for example, a cylindrical metal member). In contrast, in the first embodiment, the lower end of the elastic body 311 is located below the lower end of the bottom surface side 26b of the accumulator shell 26, and therefore the elastic body 311 can be attached to the bottom plate 352 without using a cylindrical metal member, and the installation work of the rotary compressor 1 to the outdoor unit 350 can be facilitated.

[0045] In the first embodiment shown in FIG. 1, the fixing portion 309a is fixed to the outer peripheral surface 10s of the compressor main body container 10, but the present invention is not limited to this structure, and may be fixed to at least one of the outer peripheral surface 10s of the compressor main body container 10 and the outer peripheral surface 25s of the accumulator container 25 (see other embodiments). The leg member 309 may be fixed to at least one of the second region R2 of the outer peripheral surface 25s of the accumulator container 25 and the outer peripheral surface 10s of the compressor main body container 10. This allows the leg member 309 to be in a state where it does not come into contact with the first region R1 of the outer peripheral surface 25s of the accumulator container 25, and prevents the leg member 309 from being directly cooled by the first region R1 of the outer peripheral surface 25s cooled by the low-temperature refrigerant inside the accumulator space portion 36. Further, the outer peripheral surface 10s of the compressor main body container 10 includes the outer peripheral surface of the main shell 10a and the outer peripheral surface of the bottom shell 10c. In the first embodiment, the fixing portion 309a of the leg member 309 is fixed to the outer peripheral surface of the main shell 10a of the compressor main body container 10, but it is sufficient that the fixing portion 309a is fixed to at least one of the outer peripheral surfaces of the main shell 10a and the bottom shell 10c.

[0046] 1 and 4, in the first embodiment, the fixing portion 309a of the leg member 309 is fixed to the outer peripheral surface 10s of the compressor main body container 10. Since the compression portion 12 is disposed in the internal space of the compressor main body container 10, the surface of the compressor main body container 10 becomes relatively hot. Therefore, by fixing the fixing portion 309a to the outer peripheral surface 10s of the compressor main body container 10, it is possible to effectively prevent the leg member 309 from freezing.

[0047] As shown in FIG. 3, when the accumulator container 25 is viewed from above and below, the leg members 309 are arranged at positions that do not overlap the accumulator suction pipe 27, the gas-liquid separation pipe 31, and the connecting pipe 104 in the circumferential direction of the outer peripheral surface 25s of the accumulator container 25. This makes it possible to avoid the complication of the formation of the leg members 309 and the increase in size of the entire rotary compressor 1. In addition, the three leg members 309 are arranged at equal intervals in the circumferential direction of the main shell 10a of the compressor body container 10. This allows the entire rotary compressor 1 to be stably supported by a simple structure using the three leg members 309, and the vibration of the rotary compressor 1 is absorbed by the elastic bodies 311 to suppress the vibration. The number and shape of the leg members 309 are not limited to those in the first embodiment.

[0048] Although the rotary compressor 1 of the first embodiment includes the metal leg member 309 and the rubber elastic body 311, the materials of the leg member 309 and the elastic body 311 are not limited. For example, at least a part of the leg member 309 may be formed of a resin material having low thermal conductivity.

[0049] 5 is a perspective view showing a state in which a heat insulating material is provided on the accumulator vessel 25 as a first modified example of the first embodiment. As shown in FIG. 5, a heat insulating body 320 may be provided on an outer peripheral surface 25s of the accumulator vessel 25.

[0050] The insulator 320 has an insulator main body 320c formed in a cup shape covering the entire circumference of the outer circumferential surface of the accumulator shell 26 from the side opposite to the opening (bottom side) 26b of the accumulator shell 26. The insulator 320 also has a first tubular portion 320a covering the lower end of the connecting pipe 104 and the connection portion between the connecting pipe 104 and the gas-liquid separation pipe 31, and a second tubular portion 320b covering the lower end side of the accumulator suction pipe 27. The insulator 320 has the first tubular portion 320a, which prevents frost growing along the longitudinal direction of the connecting pipe 104 from the accumulator vessel 25 from reaching the leg member 309 via the outer circumferential surface of the main shell 10a, thereby preventing the elastic body 311 from freezing. Furthermore, it is possible to prevent frost formed on the accumulator container 25, the accumulator suction pipe 27, and the lower end of the connecting pipe 104 from growing up to the bottom plate 352 of the outdoor unit 350 described below, which would cause abnormal noise and abnormal vibrations due to interference between the frost (ice) and other parts.

[0051] Although not shown, the heat insulator 320 has, for example, a notch formed to connect the opening side 26a and the opposite opening side 26b of the accumulator shell 26, a notch formed in the first tubular portion 320a along the longitudinal direction of the connecting pipe 104, and a notch formed in the second tubular portion 320b along the longitudinal direction of the accumulator suction pipe 27. The heat insulator 320 is attached to cover the outside of the accumulator vessel 25 through each notch. The heat insulator 320 is fixed to the outer peripheral surface 25s of the accumulator vessel 25 by, for example, an adhesive or an adhesive tape. The heat insulator 320 may be formed, for example, by wrapping a thin sheet-like insulating material around the outer peripheral surface 25s of the accumulator vessel 25.

[0052] As described above, the outer peripheral surface 25s of the accumulator container 25 is covered with the heat insulator 320, thereby blocking heat transfer between the outer peripheral surface 25s, which becomes cold, and the air around the accumulator container 25. Therefore, even if the outer peripheral surface 25s of the accumulator container 25 becomes cold, the heat insulator 320 covering the outer peripheral surface 25s of the accumulator container 25 suppresses the adhesion of frost (ice) around the accumulator container 25, so that the frost growing around the accumulator container 25, which becomes cold, is prevented from adhering to the elastic body 311 through the leg member 309. The heat insulator 320 may be similarly provided in other embodiments described later. The heat insulator 320 is not limited to a structure provided on the accumulator container 25 side, and may be provided so as to cover the leg member 309. In addition, the heat insulator 320 may have the heat insulator main body 320c, the first tubular portion 320a, and the second tubular portion 320b formed integrally or separately. In addition, the heat insulator 320 does not have to have the first tubular portion 320a or the second tubular portion 320b.

[0053] Fig. 6 is a perspective view showing a fixed state of the leg member 309 via an intervening member as a second modification of the first embodiment. In the second modification of the first embodiment, the structure is not limited to the structure in which the fixing portion 309a of the leg member 309 is directly fixed to the outer peripheral surface 10s of the compressor main body container 10 as shown in Figs. 1 to 5, and the fixing portion 309a may be fixed to the outer peripheral surface 10s of the compressor main body container 10 via an intervening member 312 as shown in Fig. 6. The intervening member 312 is formed of a metal plate and has a flat surface 312a to which the fixing portion 309a of the leg member 309 is joined and a curved surface 312b to which the outer peripheral surface 10s of the compressor main body container 10 is joined.

[0054] This eliminates the need to process the fixing portion 309a of the leg member 309 into an arc shape that follows the outer peripheral surface 10s of the compressor main body vessel 10, simplifying the processing step of the leg member 309. In addition, the intervening member 312 allows the connection portion 309c and the holding portion 309b of the leg member 309 to be disposed further away from the outer peripheral surface 25s of the accumulator vessel 25, thereby further preventing the leg member 309 and the elastic body 311 from freezing due to the accumulator vessel 25 becoming cold. The intervening member 312 may be similarly provided in other embodiments described later.

[0055] Further, similar to the case where the fixing portion 309a of the leg member 309 is directly fixed to the compressor main body container 10 or the like, the intervening member 312 may have a structure in which it is joined to at least one of the outer circumferential surface 10s of the compressor main body container 10 and the outer circumferential surface 25s of the accumulator container 25. Although not shown, the intervening member 312 may be formed so as to extend downward along the vertical direction, and the fixing portion 309a of the leg member 309 may be joined to the intervening member 312.

[0056] (Effects of Example 1) As described above, the rotary compressor 1 of the first embodiment is a rotary compressor 1 in which the accumulator vessel 25 is connected to the lower part of the compressor main vessel 10 in the up-down direction of the compressor main vessel 10, and has a fixed part 309a fixed to the outer peripheral surface 10s of the compressor main vessel 10 and a holding part 309b for holding the elastic body 311, and the holding part 309b is provided with a leg member 309 located below the fixed part 309a in the up-down direction of the compressor main vessel 10. When the accumulator vessel 25 is viewed from the outside to the inside in the radial direction, the outer peripheral surface 25s of the accumulator vessel 25 has a first region R1 overlapping with the accumulator space portion 36, and the first region R1 has an inner outer peripheral surface portion 25t located on the central axis C side relative to the outer peripheral surface 10s of the compressor main vessel 10. As a result, in the radial direction of the accumulator vessel 25, the leg member 309 fixed to the outer peripheral surface 10s of the compressor main body vessel 10 and the inner outer peripheral surface portion 25t of the accumulator vessel 25 are not in contact with each other, and a space (non-contact space portion G) can be secured between the leg member 309 and the inner outer peripheral surface portion 25t. This makes it possible to prevent the leg member 309 and the elastic body 311, which form the support members supporting the compressor main body vessel 10 and the accumulator vessel 25, from freezing due to the accumulator vessel 25 becoming cold. In addition, by securing a space (non-contact space portion G) between the first connection portion 309c1 of the leg member 309 and the first region R1 of the outer peripheral surface 25s of the accumulator vessel 25, it is possible to prevent frost generated on the outer peripheral surface 25s of the accumulator vessel 25 from reaching the leg member 309. As a result, the elastic body 311 can appropriately absorb the vibration of the rotary compressor 1 to suppress the vibration, thereby improving the reliability of the rotary compressor 1.

[0057] In addition, the fixed portion 309a of the leg member 309 in the rotary compressor 1 of the first embodiment is located above the inner outer peripheral surface portion 25t in the vertical direction of the compressor main body container 10. This suppresses heat transfer between the first region R1, which is particularly low temperature on the outer peripheral surface 25s of the accumulator container 25, and the leg member 309 via the fixed portion 309a, thereby suppressing freezing of the leg member 309 and the elastic body 311. In the first embodiment, for example, the fixed portion 309a of the leg member 309 is located above the upper end of the second region R2 on the outer peripheral surface 25s of the accumulator container 25. This further suppresses heat transfer between the first region R1, which is low temperature, and the leg member 309 via the fixed portion 309a.

[0058] Furthermore, the leg members 309 in the rotary compressor 1 of the first embodiment are not in contact with the first region R1 of the outer circumferential surface 25s of the accumulator vessel 25. This prevents the leg members 309 from being directly cooled by the first region R1 of the outer circumferential surface 25s cooled by the low-temperature refrigerant inside the accumulator space portion 36. Furthermore, a space (non-contact space portion G) can be easily secured between the connection portion 309c of the leg members 309 and the first region R1 of the outer circumferential surface 25s of the accumulator vessel 25, which prevents frost formed on the outer circumferential surface 25s of the accumulator vessel 25 from reaching the leg members 309.

[0059] Furthermore, since the inner outer peripheral surface portion 25t of the accumulator container 25 is formed over the entire circumferential direction of the outer peripheral surface 25s of the accumulator container 25, it is possible to easily obtain a structure in which the entire leg member 309 is out of contact with the first region R1 of the outer peripheral surface 25s of the accumulator container 25, even if the leg member 309 has a long length extending in the vertical direction or along the circumferential direction of the accumulator container 25. Furthermore, since a space (non-contact space portion G) is secured between the first connection portion 309c1 of the leg member 309 and the first region R1 of the outer peripheral surface 25s of the accumulator container 25, it is possible to prevent frost formed on the outer peripheral surface 25s of the accumulator container 25 from reaching the leg member 309.

[0060] Moreover, the rotary compressor 1 of the second modified example of the first embodiment includes an interposition member 312 provided between the fixed portion 309a of the leg member 309 and at least one of the outer peripheral surface 25s of the accumulator vessel 25 and the outer peripheral surface 10s of the compressor main body vessel 10. The fixed portion 309a of the leg member 309 is joined to at least one of the outer peripheral surface 25s of the accumulator vessel 25 and the outer peripheral surface 10s of the compressor main body vessel 10 via the interposition member 312. As a result, the interposition member 312 allows the connection portion 309c and the holding portion 309b of the leg member 309 to be disposed further away from the outer peripheral surface 25s of the accumulator vessel 25 in the radial direction of the accumulator vessel 25, so that freezing of the leg member 309 and the elastic body 311 due to the accumulator vessel 25 becoming cold can be further suppressed. Furthermore, by forming the interposed member 312 in an arc shape that follows the outer circumferential surface, the need for processing the fixing portion 309a of the leg member 309 in an arc shape that follows the outer circumferential surface is eliminated, and the processing process of the leg member 309 can be simplified.

[0061] In addition, in the rotary compressor 1 of the first embodiment, when the accumulator vessel 25 is viewed from above and below, the leg members 309 are disposed at positions not overlapping with the accumulator suction pipe 27 and the gas-liquid separation pipe 31 in the circumferential direction of the outer circumferential surface 25s of the accumulator vessel 25. This makes it possible to avoid a complicated formation of the leg members 309 and an increase in the size of the entire rotary compressor 1.

[0062] Other embodiments will be described below with reference to the drawings. In the other embodiments, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. EXAMPLES

[0063] The following Examples 2 to 4 differ from Example 1 in the shape of the leg member 309 and the structure for supporting the rotary compressor. Fig. 7 is a vertical cross-sectional view showing the main part of Example 2.

[0064] 7, in comparison with the first embodiment, leg member 309 provided in rotary compressor 2 of the second embodiment has first connection portion 309c1 of connection portion 309c that is shorter, and holding portion 309b is located at the lower end of compressor main body container 10 in the vertical direction (up-down direction) of rotary compressor 2. For this reason, fixing portion 309a and holding portion 309b of leg member 309 are located above inner outer peripheral surface portion 25t (in other words, first region R1) of outer peripheral surface 25s of accumulator container 25, so that leg member 309 and elastic body 311 can be prevented from freezing due to accumulator container 25 becoming cold.

[0065] In the second embodiment, a columnar support 313 is provided to support the elastic body 311 held by the leg member 309, and the support 313 is fixed to a bottom plate 352 of an outdoor unit 350 to be described later by fastening members such as bolts 353 (see FIG. 14). In the second embodiment, a heat insulator 320 may be provided on the outer peripheral surface 25s of the accumulator vessel 25, and this is also the case in the other embodiments to be described later. In the inside of the accumulator vessel 25, a heat insulator 35 for suppressing heat transfer between the compressor main vessel 10 and the accumulator space 36 may be provided between the bottom shell 10c of the compressor main vessel 10 and the accumulator space 36. In this case, a partition member 37 for partitioning the heat insulator 35 and the accumulator space 36 is provided in the inside of the accumulator vessel 25, and the outer peripheral portion of the partition member 37 is joined to the inner peripheral surface of the accumulator shell 26. Such a heat insulating portion 35 will be described later (see FIGS. 10 to 12, etc.).

[0066] (Effects of Example 2) In the rotary compressor 2 of the second embodiment, similarly to the first embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (first region R1) of the accumulator vessel 25 are not in contact with each other, so that it is possible to prevent the leg members 309 and the elastic body 311 from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can appropriately absorb and suppress the vibration of the rotary compressor 2, thereby improving the reliability of the rotary compressor 2. EXAMPLES

[0067] 8 is a vertical cross-sectional view showing a main part of the third embodiment. As shown in FIG. 8, the leg member 309 of the rotary compressor 3 of the third embodiment has a first connecting portion 309c1 inclined with respect to the up-down direction of the compressor main body container 10 so that the distance d between the first region R1 of the outer peripheral surface 25s of the accumulator container 25 and the first connecting portion 309c1 of the leg member 309 gradually increases from the upper end side to the lower end side of the first connecting portion 309c1. By forming the first connecting portion 309c1 inclined in this manner, the distance between the elastic body 311 held by the holding portion 309b of the leg member 309 and the first region R1 of the outer peripheral surface 25s of the accumulator container 25 is increased, and frost generated on the accumulator container 25 can be prevented from reaching the elastic body 311.

[0068] (Effects of Example 3) In the rotary compressor 3 of the third embodiment, similarly to the first embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (first region R1) of the accumulator vessel 25 are not in contact with each other, so that it is possible to prevent the leg members 309 and the elastic body 311 from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can appropriately absorb and suppress the vibration of the rotary compressor 3, thereby improving the reliability of the rotary compressor 3. EXAMPLES

[0069] FIG. 9 is a vertical cross-sectional view showing a main part of the fourth embodiment. As shown in FIG. 9, the leg member 309 of the rotary compressor 4 of the fourth embodiment has a step portion 309e formed in the middle of the first connection portion 309c1 extending along the vertical direction so as to increase the distance d between the outer circumferential surface 25s of the accumulator container 25 and the first connection portion 309c1 in the radial direction of the accumulator container 25. As an example, the step portion 309e is formed extending parallel to the second connection portion 309c2 from the fixed portion 309a side, but the shape and number of the step portion 309e are not limited to those of the fourth embodiment. In this way, the leg member 309 has the step portion 309e, which increases the distance between the elastic body 311 held by the holding portion 309b of the leg member 309 and the outer circumferential surface 25s of the accumulator container 25, thereby preventing frost generated on the accumulator container 25 from reaching the elastic body 311.

[0070] (Effects of Example 4) In the rotary compressor 4 of the fourth embodiment, similarly to the first embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (first region R1) of the accumulator vessel 25 are not in contact with each other, so that the leg members 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can properly absorb and suppress the vibration of the rotary compressor 4, thereby improving the reliability of the rotary compressor 4. EXAMPLES

[0071] The fifth embodiment differs from the first embodiment in the shapes of the bottom shell 10c of the compressor main body container 10 and the accumulator container 25. Fig. 10 is a vertical cross-sectional view showing a main portion of the fifth embodiment.

[0072] As shown in Fig. 10, the rotary compressor 5 of the fifth embodiment includes a heat insulating section 35 that is provided between the compressor main body container 10 and the accumulator space 36 and suppresses heat transfer between the compressor main body container 10 and the accumulator space 36. The heat insulating section 35 has a hollow internal space formed inside the accumulator container 25 at a position adjacent to the bottom shell 10c of the compressor main body container 10 in the vertical direction.

[0073] The accumulator vessel 25 has a flat partition member 37 that separates the insulating portion 35 and the accumulator space portion 36, and the internal space of the insulating portion 35 is formed by being blocked by the partition member 37, the bottom shell 10c of the compressor main body vessel 10, and the opening side 26a of the accumulator shell 26.

[0074] Inside the accumulator vessel 25, an accumulator space 36 is located below the heat insulating portion 35. The accumulator space 36 in the fifth embodiment is formed by a space surrounded by a cup-shaped accumulator shell 26 and a flat plate-shaped partition member 37. In the fifth embodiment, similarly to the first to fourth embodiments, when the accumulator vessel 25 is viewed from the outside to the inside in the radial direction, the outer peripheral surface 25s of the accumulator vessel 25 has a first region R1 overlapping with the accumulator space 36 and a second region R2 located above the first region R1. The first region R1 of the outer peripheral surface 25s of the accumulator vessel 25 has an inner outer peripheral surface 25t located closer to the central axis C than the outer peripheral surface 10s of the compressor main body vessel 10.

[0075] The accumulator container 25 also has a reduced diameter portion 25f whose outer diameter is smaller than the outer diameter of the opening side 26a of the accumulator shell 26. For this reason, an inner outer peripheral surface portion 25t on an outer peripheral surface 25s of the accumulator container 25 is formed on the reduced diameter portion 25f located closer to the central axis C than the outer peripheral surface 10s of the compressor main body container 10. Therefore, the inner outer peripheral surface portion 25t is formed over the entire outer peripheral surface 25s of the accumulator container 25 in the circumferential direction.

[0076] This brings the leg members 309 and the inner outer peripheral surface portion 25t (reduced diameter portion 25f, first region R1) of the accumulator vessel 25 into non-contact with each other, thereby preventing the leg members 309 and the elastic body 311 from freezing due to the low temperature of the accumulator vessel 25. In addition, since the accumulator vessel 25 has the reduced diameter portion 25f, a space for arranging the above-mentioned insulator 320 (see FIGS. 5 and 7) is secured on the outer periphery of the accumulator vessel 25, so that the insulator 320 can be easily provided between the leg members 309 and the outer peripheral surface 25s of the accumulator vessel 25.

[0077] Inside the accumulator vessel 25, the partition member 37 has a step portion 25g formed at the upper end of the reduced diameter portion 25f, which is the upper end of the inner outer circumferential surface portion 25t, protruding toward the central axis C. The outer circumferential portion of the partition member 37 is placed on and supported by the step portion 25g, and is joined by welding to the step portion 25g. By supporting the flat plate-shaped partition member 37 by the step portion 25g in this manner, it becomes easy to position the partition member 37 relative to the accumulator vessel 25, and it is possible to simplify the processing process of the partition member 37 and facilitate the joining work of the partition member 37.

[0078] According to the structure having such a thermal insulation section 35, the thermal insulation section 35 prevents heat transfer between the leg member 309 fixed to the outer peripheral surface 25s of the accumulator vessel 25 and the accumulator space section 36 of the accumulator vessel 25, so that the leg member 309 is prevented from being cooled by the accumulator vessel 25. Furthermore, by having the thermal insulation section 35, it is possible to suppress heat transfer from the compressor main body vessel 10 to the accumulator vessel 25, so that it is possible to suppress a decrease in compression efficiency caused by an increase in the temperature of the refrigerant sucked into the compression section 12. Furthermore, although the thermal insulation section 35 of the fifth embodiment is composed of only an internal space, the thermal insulation property may be improved by providing a thermal insulator (not shown) in the internal space. Furthermore, when the accumulator vessel 25 is viewed from the outside to the inside in the radial direction, the insulating region R3 that overlaps with the insulating section 35 is heated by receiving heat from the compressor main body vessel 10 side, which becomes relatively hot due to the compression section 12 being disposed inside. Therefore, by fixing the fixing portion 309a of the leg member 309 to the insulating region R3, the leg member is prevented from being cooled by the accumulator vessel 25.

[0079] The fixing portion 309a of the leg member 309 is fixed to an insulating region R3 on the outer circumferential surface 25s of the accumulator vessel 25 that overlaps with the insulating portion 35 when the accumulator vessel 25 is viewed from the outside to the inside in the radial direction. In other words, the fixing portion 309a is fixed to a second region R2 on the outer circumferential surface 25s of the accumulator vessel 25. For this reason, the fixing portion 309a is located above an inner outer circumferential surface portion 25t (a first region R1 on the outer circumferential surface 25s) on the outer circumferential surface 25s of the accumulator vessel 25, and the connecting portion 309c of the leg member 309 is not in contact with the first region R1 in which the inner outer circumferential surface portion 25t is formed.

[0080] Even in a structure in which the accumulator vessel 25 includes the heat insulating portion 35, the fixing portion 309a of the leg member 309 is not limited to a structure in which it is fixed to the heat insulating region R3. The fixing portion 309a may be fixed to at least one of the heat insulating region R3 that overlaps with the heat insulating portion 35 when the accumulator vessel 25 is viewed from the outside to the inside in the radial direction on the outer peripheral surface 25s of the accumulator vessel 25 and the outer peripheral surface 10s of the compressor main body vessel 10 (see Examples 6, 7, etc.).

[0081] (Effects of Example 5) In the rotary compressor 5 of the fifth embodiment, similarly to the first embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (reduced diameter portion 25f) of the accumulator vessel 25 are not in contact with each other, so that the leg members 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can properly absorb and suppress the vibration of the rotary compressor 5, thereby improving the reliability of the rotary compressor 5.

[0082] Furthermore, according to the rotary compressor 5 of the fifth embodiment, the accumulator vessel 25 is provided with the insulating portion 35, and thus the heat transfer between the leg member 309 fixed to the outer peripheral surface 25s of the accumulator vessel 25 and the accumulator space portion 36 of the accumulator vessel 25 is hindered by the insulating portion 35, so that the leg member 309 is prevented from being cooled by the accumulator vessel 25. EXAMPLES

[0083] The following sixth and seventh embodiments are different from the fifth embodiment in the shape of the leg member 309 and the structure for supporting the rotary compressor. Fig. 11 is a vertical cross-sectional view showing the main part of the sixth embodiment.

[0084] As shown in FIG. 11, in the leg member 309 provided in the rotary compressor 6 of the sixth embodiment, compared to the fifth embodiment (FIG. 10), the first connection portion 309c1 of the connection portion 309c is shorter, and the holding portion 309b of the leg member 309 is located in the heat insulating region R3 of the outer peripheral surface 25s of the accumulator vessel 25 in the vertical direction (up-down direction) of the accumulator vessel 25. The fixing portion 309a is fixed across the heat insulating region R3 of the outer peripheral surface 25s of the accumulator vessel 25 and the outer peripheral surface of the bottom shell 10c. Therefore, since the fixing portion 309a and the holding portion 309b are located above the inner outer peripheral surface portion 25t of the outer peripheral surface 25s of the accumulator vessel 25, it is possible to prevent the leg member 309 and the elastic body 311 from freezing due to the accumulator vessel 25 becoming cold.

[0085] Moreover, in the sixth embodiment, a columnar support base 313 is provided which supports the elastic body 311 held by the leg member 309, and the support base 313 is fixed to a bottom plate 352 of the outdoor unit 350, which will be described later, by fastening members such as bolts 353 (see FIG. 14).

[0086] (Effects of Example 6) In the rotary compressor 6 of the sixth embodiment, similarly to the fifth embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (reduced diameter portion 25f) of the accumulator vessel 25 are not in contact with each other, so that the leg members 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can properly absorb and suppress the vibration of the rotary compressor 6, thereby improving the reliability of the rotary compressor 6.

[0087] Furthermore, according to the rotary compressor 6 of the sixth embodiment, the accumulator vessel 25 is provided with the insulating portion 35, and thus the heat transfer between the leg member 309 fixed to the outer peripheral surface 25s of the accumulator vessel 25 and the accumulator space portion 36 of the accumulator vessel 25 is hindered by the insulating portion 35, so that the leg member 309 is prevented from being cooled by the accumulator vessel 25. EXAMPLES

[0088] Fig. 12 is a vertical cross-sectional view showing a main part of Example 7. As shown in Fig. 12, in a leg member 309 of a rotary compressor 7 of Example 7, compared with Example 5 (Fig. 10), a fixing portion 309a is elongated upward, and the fixing portion 309a is fixed across the heat insulating region R3 of the outer circumferential surface 25s of the accumulator vessel 25 and the lower end portion of the main shell 10a of the compressor main body vessel 10.

[0089] For example, in the seventh embodiment, the outer diameter of the main shell 10a of the compressor main body container 10 and the outer diameter of the opening side 26a of the accumulator shell 26 of the accumulator container 25 are formed to be equal, and the fixing portion 309a of the leg member 309 is fixed to the outer circumferential surface 25s of the accumulator container 25 and the outer circumferential surface 10s of the compressor main body container 10. Note that the fixing portion 309a is not limited to a structure in which it is fixed to the outer circumferential surface of the main shell 10a of the compressor main body container 10, and may be a structure in which it is fixed to at least one of the outer circumferential surface of the main shell 10a and the outer circumferential surface of the bottom shell 10c.

[0090] (Effects of Example 7) In the rotary compressor 7 of the seventh embodiment, similarly to the fifth embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (reduced diameter portion 25f) of the accumulator vessel 25 are not in contact with each other, so that the leg members 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can properly absorb and suppress the vibration of the rotary compressor 7, thereby improving the reliability of the rotary compressor 7.

[0091] Furthermore, according to the rotary compressor 7 of the seventh embodiment, since the accumulator vessel 25 is provided with the heat insulating portion 35, heat transfer between the leg member 309 fixed to the outer circumferential surface 25s of the accumulator vessel 25 and the accumulator space portion 36 of the accumulator vessel 25 is hindered by the heat insulating portion 35, so that the leg member 309 is prevented from being cooled by the accumulator vessel 25. Also, since the fixing portion 309a of the leg member 309 is fixed to both the outer circumferential surface 25s of the accumulator vessel 25 and the outer circumferential surface 10s of the compressor main body vessel 10, the leg member 309 can be firmly fixed to the rotary compressor 7. EXAMPLES

[0092] Example 8 differs from Examples 1 to 7 in the shape of the accumulator vessel 25. Fig. 13 is a perspective view showing a main part of Example 8.

[0093] 13, an outer peripheral surface 25s of an accumulator vessel 25 of a rotary compressor 8 of Example 8 has a recessed portion 25u formed therein, in which a circumferential portion of the outer peripheral surface 25s is located closer to the central axis C than the outer peripheral surface 10s of the compressor main body vessel 10. Therefore, in the outer peripheral surface 25s of the accumulator vessel 25 of Example 8, an inner outer peripheral surface portion 25t located closer to the central axis C than the outer peripheral surface 10s of the compressor main body vessel 10 is the recessed portion 25u.

[0094] The recessed portion 25u is formed at a position overlapping with each leg member 309 in the circumferential direction of the outer peripheral surface 25s of the accumulator vessel 25. On the outer peripheral surface 25s of the accumulator vessel 25, the recessed portion 25u extends in the up-down direction of the accumulator vessel 25 from the lower end of the accumulator vessel 25 to a position overlapping with the anti-opening side 10e of the bottom shell 10c of the compressor main body vessel 10. Therefore, an internal space of the recessed portion 25u is formed between the first connection portion 309c1 of the leg member 309 and the outer peripheral surface 25s of the accumulator vessel 25, so that the leg member 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25.

[0095] (Effects of Example 8) In the rotary compressor 8 of the eighth embodiment, similarly to the first embodiment, the leg members 309 and the inner outer peripheral surface portion 25t (recessed portion 25u) of the accumulator vessel 25 are not in contact with each other, so that the leg members 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can properly absorb and suppress the vibration of the rotary compressor 8, thereby improving the reliability of the rotary compressor 8.

[0096] Furthermore, according to the rotary compressor 8 of the eighth embodiment, the accumulator vessel 25 is provided with the insulating portion 35, and thus the heat transfer between the leg member 309 fixed to the outer peripheral surface 25s of the accumulator vessel 25 and the accumulator space portion 36 of the accumulator vessel 25 is hindered by the insulating portion 35, so that the leg member 309 is prevented from being cooled by the accumulator vessel 25. EXAMPLES

[0097] The ninth embodiment differs from the first to eighth embodiments in that the compressor main body container 10 and the accumulator container 25 are indirectly connected to each other via a connecting member 17. Fig. 14 is a vertical cross-sectional view showing a main part of the ninth embodiment.

[0098] 14, the accumulator vessel 25 included in the rotary compressor 9 of the ninth embodiment has a top shell 26c that closes an opening side 26a of an accumulator shell (a main shell of the accumulator vessel 25) 26. An outer periphery of the top shell 26c is welded and fixed to an inner periphery of the opening side 26a of the accumulator shell 26 at a weld U.

[0099] In the up-down direction of the compressor main body vessel 10, a gap H is provided between the top shell 26c of the accumulator vessel 25 and the bottom shell 10c of the compressor main body vessel 10, and the accumulator vessel 25 and the compressor main body vessel 10 are connected by a connecting member 17. An upper end 17a of the connecting member 17 is fixed to the main shell 10a of the compressor main body vessel 10 by welding at a welded portion Z1. A lower end 17b of the connecting member 17 is fixed to the accumulator shell 26 of the accumulator vessel 25 by welding at a welded portion Z2.

[0100] The leg member 309 has a step portion 309e similar to that of the fourth embodiment so as to be out of contact with the connecting member 17 in the radial direction of the accumulator vessel 25, and a space (non-contact space portion J) is provided between the leg member 309 and the connecting member 17.

[0101] Even in the structure of the ninth embodiment, as in the first to eighth embodiments, when the accumulator vessel 25 is viewed from the outside to the inside in the radial direction, the outer peripheral surface 25s of the accumulator vessel 25 has a first region R1 overlapping with the accumulator space portion 36, and the first region R1 has an inner outer peripheral surface portion 25t located on the central axis C side from the outer peripheral surface 10s of the compressor main body vessel 10. As a result, in the radial direction of the accumulator vessel 25, the leg member 309 fixed to the outer peripheral surface 10s of the compressor main body vessel 10 and the inner outer peripheral surface portion 25t of the accumulator vessel 25 are not in contact with each other, and a space (non-contact space portion G) can be secured between the leg member 309 and the inner outer peripheral surface portion 25t (first region R1). Therefore, the leg member 309 and the elastic body 311 forming the support member supporting the compressor main body vessel 10 and the accumulator vessel 25 can be prevented from freezing due to the accumulator vessel 25 becoming cold. As a result, the vibration of the rotary compressor 9 can be properly absorbed and suppressed by the elastic body 311, and the reliability of the rotary compressor 9 can be improved.

[0102] (Effects of Example 9) In the rotary compressor 9 of the ninth embodiment, similarly to the first to eighth embodiments, the leg members 309 and the inner outer peripheral surface portion 25t (reduced diameter portion 25f, first region R1) of the accumulator vessel 25 are not in contact with each other, so that the leg members 309 and the elastic body 311 can be prevented from freezing due to the low temperature of the accumulator vessel 25. As a result, the elastic body 311 can properly absorb and suppress the vibration of the rotary compressor 9, thereby improving the reliability of the rotary compressor 9.

[0103] (Outdoor unit) Finally, a description will be given of outdoor units equipped with the rotary compressors 1 to 9 of the above-mentioned embodiments 1 to 9. Fig. 15 is a schematic diagram showing an outdoor unit of an embodiment, which is equipped with the rotary compressor 1 of embodiment 1 as an example.

[0104] As shown in Fig. 15, an outdoor unit 350 of the embodiment includes a housing 351 that houses therein the rotary compressor 1, a heat exchanger (not shown), and a blower (not shown) that blows outside air so that it passes through the heat exchanger. The housing 351 of the outdoor unit 350 has a bottom plate 352 on which the rotary compressor 1 is placed, and a bolt 353 as a fastening member that is inserted into a through hole of an elastic body 311 held by a leg member 309 of the rotary compressor 1. The elastic body 311 is fixed onto the bottom plate 352 by the bolt 353. Thus, the rotary compressor 1 is supported on the bottom plate 352 via the elastic body 311. [Explanation of symbols]

[0105] 1~9 Rotary compressor 10 Compressor main body container 10s outer surface 12 Compression section 25 Accumulator vessel 25f reduced diameter part 25g step 25s outer surface 25t Inner outer peripheral surface 31 Gas-liquid separation tube 35 Insulation section 36 Accumulator space 37 Partitioning material 102 Compressor suction pipe (suction pipe) 107 Discharge pipe 309 Leg members 309a Fixed part 309b Holding part 309c Connection 309c1 First connection part 309c2 Second connection part 311 Elastic body 320 Insulation 350 outdoor unit 352 Bottom plate 353 Bolts (fastening members) C center axis d Distance R1 1st area R2 2nd area R3 Insulation area

Claims

1. A hermetic compressor comprising: a vertical cylindrical compressor main container provided with a discharge pipe and a suction pipe for a refrigerant; a cylindrical accumulator container connected to the suction pipe; and a compression section disposed within the compressor main container for compressing a refrigerant drawn from the accumulator container through the suction pipe and discharging the refrigerant from the discharge pipe, wherein the accumulator container is connected to a lower part of the compressor main container in a vertical direction of the compressor main container, a leg member supporting the compressor main body container and the accumulator container, the leg member has a fixing portion fixed to at least one of an outer peripheral surface of the compressor main body container and an outer peripheral surface of the accumulator container, and a holding portion for holding an elastic body supporting the hermetic compressor, the holding portion being located lower than the fixing portion in the up-down direction, An accumulator space portion, which is an internal space communicating with the suction pipe, is formed inside the accumulator container, When the accumulator container is viewed from the outside to the inside in the radial direction, an outer peripheral surface of the accumulator container has a first region overlapping with the accumulator space portion, and an inner outer peripheral surface portion is formed in the first region, the inner peripheral surface portion being located closer to the central axis in the up-down direction than the outer peripheral surface of the compressor main body container. Hermetic compressor.

2. The leg member is not in contact with the first region of the outer circumferential surface of the accumulator vessel. The hermetic compressor according to claim 1.

3. The fixing portion is located above the inner outer peripheral surface portion in the vertical direction. The hermetic compressor according to claim 1.

4. The outer peripheral surface of the accumulator container has a second region located above the first region in the vertical direction, The fixing portion is fixed to the second region on the outer circumferential surface of the accumulator container. The hermetic compressor according to claim 3.

5. The fixing portion is fixed to an outer peripheral surface of the compressor main body container. The hermetic compressor according to claim 3.

6. The inner outer peripheral surface portion is formed over the entire circumferential direction of the outer peripheral surface of the accumulator container. The hermetic compressor according to claim 1.

7. The inner outer peripheral surface portion is formed as a reduced diameter portion having an outer diameter smaller than the outer diameter of the opening side of the accumulator container. The hermetic compressor according to claim 6.

8. the inner outer peripheral surface portion is a recessed portion in a circumferential direction of the outer peripheral surface of the accumulator container, the recessed portion being located closer to the central axis than the outer peripheral surface of the compressor main body container, The recessed portion is formed at a position overlapping with the leg member in a circumferential direction of an outer circumferential surface of the accumulator container. The hermetic compressor according to claim 1.

9. The leg member further includes a connection portion that connects the fixing portion and the holding portion, The connection portion has a first connection portion extending along a vertical direction that is the up-down direction, and a second connection portion extending from a lower end of the first connection portion along a horizontal direction perpendicular to the vertical direction. The hermetic compressor according to claim 1.

10. The fixing portion is formed at an upper end of the leg member in the up-down direction, The holding portion is formed on the second connection portion. The hermetic compressor according to claim 9.

11. The fixing portion is formed in an arc shape along the circumferential direction of at least one of the outer circumferential surface of the accumulator container and the outer circumferential surface of the compressor main body container. The hermetic compressor according to claim 1.

12. The compressor further includes an interposition member provided between the fixed portion and at least one of an outer circumferential surface of the accumulator container and an outer circumferential surface of the compressor main body container, The fixed portion of the leg member is joined to at least one of an outer peripheral surface of the accumulator container and an outer peripheral surface of the compressor main body container via the intermediate member, thereby connecting the leg member to the compressor main body container. The hermetic compressor according to claim 1.

13. the first connection portion of the leg member is inclined with respect to the vertical direction such that a distance between the first region of the outer circumferential surface of the accumulator container and the first connection portion of the leg member gradually increases from an upper end side to a lower end side of the first connection portion, The hermetic compressor according to claim 9.

14. The accumulator container has an accumulator suction pipe that draws refrigerant into the inside of the accumulator container, and a gas-liquid separation pipe that sends gas refrigerant from the inside of the accumulator container to the compression section, When the accumulator container is viewed from the top-bottom direction, the leg member is disposed at a position not overlapping with the accumulator suction pipe and the gas-liquid separation pipe in a circumferential direction of an outer circumferential surface of the accumulator container. The hermetic compressor according to claim 1.

15. a heat insulating portion provided between the compressor main body container and the accumulator space portion and configured to suppress heat transfer between the compressor main body container and the accumulator space portion, the fixing portion of the leg member is fixed to at least one of an insulating region in an outer peripheral surface of the accumulator container that overlaps with the insulating portion when the accumulator container is viewed from the outside to the inside in a radial direction, and an outer peripheral surface of the compressor main body container. The hermetic compressor according to claim 1.

16. The accumulator container has a partition member that separates the heat insulating portion from the accumulator space portion. The hermetic compressor according to claim 15.

17. A step portion protruding toward the central axis is formed above the inner outer peripheral surface portion inside the accumulator container, The outer periphery of the partition member is supported by the step portion.

17. The hermetic compressor according to claim 16.

18. A heat insulator is provided on the outer circumferential surface of the accumulator vessel. The hermetic compressor according to claim 1.

19. The elastic body is further provided to be held by the holding portion of the leg member. The hermetic compressor according to claim 1.

20. An outdoor unit of an air conditioner comprising the hermetic compressor according to claim 19, The outdoor unit includes a bottom plate on which the hermetic compressor is placed and a fastening member that is inserted into the elastic body, The elastic body is fixed to the bottom plate by the fastening member. Air conditioner outdoor unit.

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