WO2023282163A1 - 密閉型圧縮機 - Google Patents
密閉型圧縮機 Download PDFInfo
- Publication number
- WO2023282163A1 WO2023282163A1 PCT/JP2022/026143 JP2022026143W WO2023282163A1 WO 2023282163 A1 WO2023282163 A1 WO 2023282163A1 JP 2022026143 W JP2022026143 W JP 2022026143W WO 2023282163 A1 WO2023282163 A1 WO 2023282163A1
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- WO
- WIPO (PCT)
- Prior art keywords
- accumulator
- container
- compressor
- shell
- body container
- Prior art date
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- 239000003507 refrigerant Substances 0.000 claims abstract description 60
- 230000002093 peripheral effect Effects 0.000 claims abstract description 48
- 230000006835 compression Effects 0.000 claims abstract description 39
- 238000007906 compression Methods 0.000 claims abstract description 39
- 238000005192 partition Methods 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 27
- 238000012986 modification Methods 0.000 description 19
- 230000004048 modification Effects 0.000 description 19
- 238000000926 separation method Methods 0.000 description 13
- 238000005057 refrigeration Methods 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 8
- 238000007710 freezing Methods 0.000 description 7
- 230000008014 freezing Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 241000237983 Trochidae Species 0.000 description 4
- 238000005219 brazing Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Definitions
- the present invention relates to a hermetic compressor that compresses and conveys refrigerant in a refrigerator or air conditioner that uses a refrigeration cycle.
- a compression section and a motor for driving the compression section are housed inside a vertical cylindrical compressor body container, and refrigerant is divided into gaseous refrigerant and liquid refrigerant in the lower part of the compressor body container.
- a compressor is known that is provided with an accumulator container for separating (hereinafter referred to as gas-liquid separation of the refrigerant) and sucking only the gaseous refrigerant into the compression section.
- the compressor of Patent Document 1 is a compressor having a rotary compression section, and an accumulator container that separates the gas-liquid refrigerant sucked into the compression section is a container independent of the main body container of the compressor. It is arranged below the compressor body container, and the compressor body container and the accumulator container are connected using a bracket.
- the compressor disclosed in Patent Document 2 is a compressor with a scroll type compressor, and an accumulator container is directly joined to the lower portion of a compressor body container that houses the compressor and a motor that drives the compressor.
- the inside of the closed container is partitioned by a pressure partition wall, the upper part of the pressure partition wall is used as a compressor main body container in which a compression unit and a motor are accommodated, and the lower part of the pressure partition wall is used as an accumulator container. .
- the disclosed technology has been made in view of the above, and aims to provide a hermetic compressor that can suppress the cooling of the elastic body by the accumulator shell that becomes low temperature.
- a closed type compressor comprising: a compression unit arranged in a compressor container for compressing refrigerant sucked from an accumulator container through a suction pipe and discharged from a discharge pipe; and a motor arranged in a compressor body container for driving the compression unit an accumulator container having a cup-shaped accumulator shell whose opening side is joined to the compressor main container; leg members fixed to the outer peripheral surface of the compressor main container and supporting the compressor main container and the accumulator container; , and an elastic body supporting the leg member.
- the hermetic compressor disclosed in the present application it is possible to prevent the elastic body from being cooled by the accumulator container which becomes low temperature.
- FIG. 1 is a longitudinal sectional view showing rotary compression of the embodiment.
- FIG. 2 is an exploded perspective view showing the compression section of the rotary compressor of the embodiment.
- FIG. 3 is a plan view showing the rotary compressor of the embodiment.
- FIG. 4 is a perspective view showing the rotary compressor of the embodiment.
- FIG. 5 is a side view showing a state in which the rotary compressor of the embodiment is supported by leg members and elastic bodies.
- FIG. 6 is a perspective view showing a rotary compressor of Modification 1.
- FIG. 7 is a vertical cross-sectional view showing a main part of Modification 1.
- FIG. 8 is a vertical cross-sectional view showing a main part of Modification 2.
- FIG. 1 is a longitudinal sectional view showing rotary compression of the embodiment.
- FIG. 2 is an exploded perspective view showing the compression section of the rotary compressor of the embodiment.
- FIG. 3 is a plan view showing the rotary compressor of the embodiment.
- FIG. 4 is a perspective view showing the
- hermetic compressor disclosed in the present application will be described in detail based on the drawings. It should be noted that the hermetic compressor disclosed in the present application is not limited to the following examples.
- FIG. 1 is a longitudinal sectional view showing a rotary compressor of an embodiment.
- FIG. 2 is an exploded perspective view showing the compression section of the rotary compressor of the embodiment.
- the rotary compressor 1 includes a compression section 12 that sucks refrigerant into a compressor body container 10 from a compression section intake pipe 102 and discharges the compressed refrigerant into the compressor body container 10 . and a motor 11 for driving the compression section 12 are housed therein, and the high-pressure refrigerant compressed by the compression section 12 is discharged into the compressor main body container 10 and further discharged to the refrigeration cycle through the discharge pipe 107.
- the compressor body container 10 has a vertical cylindrical main shell 10a, a cup-shaped top shell 10b, and a cup-shaped bottom shell 10c. 10g is fixed by welding at a first welded portion V, and the opening side 10d of the bottom shell 10c is fixed by welded at a second welded portion W to the lower end of the main shell 10a.
- a compression section intake pipe 102 for sucking the low-pressure refrigerant of the refrigeration cycle into the compression section 12 is provided through the main shell 10a. More specifically, a guide pipe 101 is fixed to the main shell 10a by brazing, and a compression section intake pipe 102 passes through the inside of the guide pipe 101 and is fixed to the guide pipe 101 by brazing.
- a discharge pipe 107 for discharging the high-pressure refrigerant compressed by the compression section 12 from the inside of the compressor body container 10 to the refrigeration cycle is provided through the top shell 10b.
- the discharge pipe 107 is directly fixed to the top shell 10b by brazing.
- An accumulator container 25 is provided below the compressor main body container 10 to separate the gas-liquid of the low-pressure refrigerant sucked from the refrigeration cycle and allow only the gaseous refrigerant to be sucked into the compression section 12 .
- the opening side 26a of the cup-shaped accumulator shell 26 is placed on the opposite side 10e of the bottom shell 10c.
- the accumulator container 25 is formed by fixing the accumulator shell 26 by welding at the third welding portion X and sealing the inside of the accumulator shell 26 .
- an accumulator intake pipe 27 for sucking refrigerant from the refrigerating cycle into the accumulator container 25, and a gas-liquid separation pipe 31 for feeding gaseous refrigerant from the inside of the accumulator penetrate the accumulator shell 26, respectively. 26 by brazing.
- the gas-liquid separation pipe 31 is connected to the compression section suction pipe 102 via a communication pipe 104 outside the accumulator container 25 .
- a base member 310 that supports the entire compressor is fixed to the lower portion of the accumulator shell 26 by welding.
- the compression part 12 has a cylinder 121 , a top plate 160T, a bottom plate 160S, and a rotating shaft 15 .
- a main bearing portion 161T is provided on the upper end plate 160T.
- a secondary bearing portion 161S is provided on the lower end plate 160S.
- the rotary 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 fitted to the main bearing portion 161T of the upper end plate 160T, and the sub-shaft portion 151 of the rotating shaft 15 is fitted to the sub-bearing portion 161S of the lower end plate 160S, thereby rotating the rotating shaft 15. freely supported.
- the motor 11 has a stator 111 arranged outside and a rotor 112 arranged inside.
- the stator 111 is fixed to the inner peripheral surface of the main shell 10a by shrink fitting.
- the rotor 112 is fixed to the rotating shaft 15 by shrink fitting.
- the compressor main body container 10 contains lubricating oil 18 in such an amount that the compression section 12 is almost immersed. ing.
- a cylindrical hollow portion 130 is provided inside the cylinder 121 , and a piston 125 is arranged in the hollow portion 130 .
- the piston 125 is fitted to the eccentric portion 152 of the rotating shaft 15 .
- the cylinder 121 is provided with a groove extending outward from the hollow portion 130, and a vane 127 is arranged in the groove.
- the cylinder 121 is provided with a spring hole 124 communicating with the groove from the outer periphery, and a spring 126 is arranged in the spring hole 124 .
- the vane 127 is pressed against the piston 125 by the spring 126 , thereby dividing the space outside the piston 125 into the suction chamber 133 and the discharge chamber 131 in the hollow portion 130 of the cylinder 121 .
- the cylinder 121 is provided with a suction hole 135 that communicates with the suction chamber 133 from the outer periphery.
- Compressor suction pipe 102 is connected to suction hole 135 .
- the upper end plate 160T is provided with a discharge hole 190 penetrating through the upper end plate 160T and communicating with the discharge chamber 131 .
- a discharge valve 200 that opens and closes the discharge hole 190 and a discharge valve retainer 201 that regulates the warp of the discharge valve 200 are fixed to the upper end plate 160T with rivets 202 .
- An upper end plate cover 170 that covers the discharge hole 190 is arranged above the upper end plate 160T to form an upper end plate cover chamber 180 closed by the upper end plate 160T and the upper end plate cover 170 .
- the top end plate cover 170 is fixed to the top end plate 160T by a plurality of bolts 175 that fix the top end plate 160T and the cylinder 121 together.
- the upper end plate cover 170 is provided with an upper end plate cover discharge hole 172 that communicates between the upper end plate cover chamber 180 and the inside of the compressor body container 10 .
- the flow of the sucked refrigerant due to the rotation of the rotating shaft 15 will be described below.
- the rotation of the rotary shaft 15 causes the piston 125 fitted in the eccentric portion 152 of the rotary shaft 15 to revolve, thereby sucking the refrigerant while expanding the volume of the suction chamber 133 .
- the low-pressure refrigerant of the refrigeration cycle is sucked into the accumulator container 25 through the accumulator suction pipe 27, and when the refrigerant sucked into the accumulator container 25 is mixed with liquid, , and only the gaseous refrigerant is sucked into the gas-liquid separation pipe 31 opened upward inside the accumulator container 25 .
- the gaseous refrigerant sucked into the gas-liquid separation pipe 31 is sucked into the suction chamber 133 through the communication pipe 104 and the compressor suction pipe 102 .
- the liquid level of the liquid refrigerant inside the accumulator container 25 rises above the opening end 31b of the gas-liquid separation pipe 31, and a large amount of liquid refrigerant is released into the gas. There is a possibility that it will flow into the liquid separation tube 31 . If a large amount of liquid refrigerant flows into the compression section 12 through the gas-liquid separation pipe 31, the compression section 12 may be damaged.
- the gas-liquid separation pipe 31 is provided with a liquid return hole 34 for drawing the liquid refrigerant into the gas-liquid separation pipe 31 little by little.
- the rotation of the rotary shaft 15 causes the piston 125 fitted in the eccentric portion 152 of the rotary shaft 15 to revolve, thereby compressing the refrigerant while reducing the volume of the discharge chamber 131, and the pressure of the compressed refrigerant is applied to the discharge valve.
- the discharge valve 200 opens to discharge the refrigerant from the discharge chamber 131 to the upper end plate cover chamber 180 .
- the refrigerant discharged into the upper end plate cover chamber 180 is discharged into the compressor body container 10 from the upper end plate cover discharge hole 172 provided in the upper end plate cover 170 .
- the refrigerant discharged into the compressor main body container 10 flows through notches (not shown) provided on the outer circumference of the stator 111 for communication between the top and bottom, gaps (not shown) between the windings of the stator 111, or the stator 111 and the rotor 112 through a gap 115 (see FIG. 1), and is discharged to the refrigerating cycle from a discharge pipe 107 provided in the top shell 10b.
- the lubricating oil 18 enclosed in the lower part of the compressor body container 10 is supplied to the compression section 12 through the inside (not shown) of the rotating shaft by the centrifugal force of the rotating shaft.
- the lubricating oil 18 supplied to the compression portion 12 is mixed with the refrigerant and becomes mist and is discharged into the compressor body container 10 together with the refrigerant.
- the lubricating oil 18 discharged into the compressor body container 10 in the form of mist is separated from the refrigerant by centrifugal force due to the rotational force of the motor 11 and returned to the lower part of the compressor body container 10 as oil droplets. .
- part of the lubricating oil 18 is discharged to the refrigeration cycle together with the refrigerant without being separated.
- the lubricating oil 18 discharged to the refrigeration cycle circulates through the refrigeration cycle, returns to the accumulator container 25 , is separated inside the accumulator container 25 , and stays in the lower portion of the accumulator container 25 .
- the lubricating oil 18 remaining 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.
- FIG. 3 is a plan view showing the rotary compressor of the embodiment.
- FIG. 4 is a perspective view showing the rotary compressor of the embodiment.
- FIG. 5 is a side view showing a state where the rotary compressor 1 of the embodiment is supported by leg members 309 and elastic bodies 311.
- the rotary compressor 1 includes three leg members 309 that support the compressor body container 10 and the accumulator container 25.
- the leg member 309 is formed by bending a metal plate into an L shape.
- the leg member 309 is joined to the outer peripheral surface of the bottom shell 10c side of the main shell 10a of the compressor main body container 10 by a fourth weld Y. As shown in FIG. Therefore, the leg member 309 joined to the outer peripheral surface of the main shell 10 a is fixed to the outer peripheral surface of the compressor main body container 10 .
- the hermetic compressor disclosed in the present application is not limited to a structure in which the leg members 309 are joined to the main shell of the compressor main body container 10. It may be joined by a fourth weld Y to the outer peripheral surface of the side 26a.
- the opening side 26a of the accumulator shell 26 is joined to the outer peripheral surface of the opening side 10d of the bottom shell 10c of the compressor main container 10 as described above. Therefore, the leg member 309 joined to the outer peripheral surface of the opening side 26 a of the accumulator shell 26 is fixed to the outer peripheral surface of the compressor main body container 10 .
- the structure in which the leg member 309 is fixed to the outer peripheral surface of the compressor main body container 10 includes a structure in which the leg member 309 is joined to the outer peripheral surface of the opening side 26a of the accumulator shell 26, and a leg A structure in which the member 309 is joined to the outer peripheral surface of the main shell 10a or the outer peripheral surface of the bottom shell 10c of the compressor main body container 10 is included.
- the leg member 309 has an L-shaped cross section, and includes a fixing piece 309a as a fixing portion fixed to the main shell 10a of the compressor main body container 10, and an elastic member. and a support piece 309b as a support to which the body 311 is attached.
- the fixed piece 309a of the leg member 309 extends along the vertical direction of the main shell 10a, and is joined to the outer peripheral surface of the lower end of the main shell 10a by the fourth weld Y.
- the support piece 309b is formed with a mounting hole 309c extending along the horizontal radial direction of the main shell 10a and into which the elastic body 311 is fitted.
- the elastic body 311 attached to the support piece 309b of the leg member 309 is arranged at a position outside the outer peripheral surface of the main shell 10a in the radial direction of the main shell 10a and spaced apart from the main shell 10a. , the elastic body 311 is spaced apart so as not to contact the accumulator shell 26 .
- the elastic body 311 attached to the support piece 309b is supported from below by a base member 310 which will be described later.
- the elastic body 311 By separating the elastic body 311 from the outer peripheral surface of the main shell 10a, the elastic body 311 is arranged away from the accumulator container 25 joined to the main shell 10a, and the elastic body 311 does not contact the outer peripheral surface of the accumulator shell 26. . As a result, frost generated around the accumulator container 25 can be prevented from directly adhering to the elastic body 311, and freezing of the elastic body 311 can be suppressed.
- leg member 309 by joining the leg member 309 to the main shell 10a of the compressor main body container 10 in this way, it is separated from the accumulator shell 26, which becomes low temperature, and is arranged in contact with the main shell 10a, which becomes high temperature. . Therefore, compared to a structure in which the leg members 309 are fixed to the accumulator shell 26 side, the leg members 309 are less likely to be cooled by the accumulator container 25 whose interior is at a low temperature due to the gas refrigerant, and the leg members 309 may freeze. effectively suppressed.
- the three leg members 309 are arranged at equal intervals in the circumferential direction of the main shell 10a of the compressor main body container 10. As shown in FIG. As a result, the entire rotary compressor 1 is stably supported with a simple structure using three leg members 309, and vibrations of the rotary compressor 1 are absorbed and suppressed by the elastic bodies 311.
- the rotary compressor 1 of the embodiment includes the leg members 309 made of metal and the elastic bodies 311 made of rubber, the materials of the leg members 309 and the elastic bodies 311 are not limited.
- at least part of the leg member 309 may be made of a resin material or the like having low thermal conductivity.
- the rotary compressor 1 includes a base member 310 mounted at a mounting position of the rotary compressor 1, and the support pieces 309b of each leg member 309 are attached to the base via elastic bodies 311. It is supported by member 310 .
- the base member 310 is made of, for example, a metal material, and has columnar support portions 310 a that support elastic bodies 311 attached to the respective leg members 309 .
- the structure of the rotary compressor 1 is not limited to the structure including the base member 310, and the elastic body 311 provided on the leg member 309 may be directly placed on the installation location.
- a fixing screw (not shown) passed through the elastic body 311 is screwed to the upper end of the support portion 310a, thereby fixing the elastic body 311 thereto.
- the lower end of the support portion 310a is screwed and fixed to the bottom plate 330 of the outdoor unit.
- the base member 310 supports the compressor main body container 10 and the accumulator shell 26 by supporting each leg member 309 via elastic bodies 311 .
- the base member 310 supports the side 26b opposite to the opening side 26a of the accumulator shell 26 (hereinafter referred to as the counter-opening side of the accumulator shell 26) so that it does not come into contact with the bottom plate 330, and the elastic body 311 provides rotary compression. The vibration of the machine 1 is absorbed and suppressed.
- leg member 309 may be formed integrally with the base member 310.
- the leg member 309 is joined to the outer peripheral surface of the main shell 10a of the compressor main container 10 by the fourth weld Y, but although not shown, the leg member 309 is joined to the bottom shell 10c of the compressor main container 10. may be joined. From the viewpoint of avoiding the cooling of the leg members 309 by the accumulator shell 26 whose inside is at a low temperature, a structure in which the leg members 309 are joined to the compressor main body container 10 whose inside is at a high temperature is preferable. Further, although not shown, the leg member 309 may be joined by a fourth welded portion Y so as to straddle the main shell 10a of the compressor main body container 10 and the opening side 26a of the accumulator shell 26. The mechanical strength of the connected state between the main shell 10a of the compressor main body container 10 and the accumulator shell 26 can also be supplemented by .
- the joining position of the leg members 309 may be above the lower end of the main shell 10a.
- the leg members 309 are: A structure in which it is joined to the lower end portion of the main shell 10a of the compressor main body container 10, the bottom shell 10c, or the opening side 26a of the accumulator shell 26 is preferable.
- a heat insulating portion having a hollow internal space may be provided at a position adjacent to the bottom shell 10c of the compressor main body container 10.
- the heat insulation part has, for example, a partition member that partitions the inside of the accumulator shell 26, and the internal space is blocked by the partition member, the bottom shell 10c of the compressor main body container 10, and the opening side 26a of the accumulator shell 26. formed by In this case, for example, the leg member 309 is joined to the opening side 26a of the accumulator shell 26 at a position facing the heat insulator.
- the heat between the accumulator shell 26 and the leg member 309 joined to the lower end portion of the main shell 10a of the compressor main body container 10 and the opening side 26a of the accumulator shell 26 is Cooling of the leg members 309 by the accumulator shell 26 can be further suppressed since transmission is impeded by the insulation. Further, heat insulating properties may be enhanced by providing a heat insulating material in the internal space of the heat insulating portion.
- the rotary compressor 1 of the embodiment includes the accumulator container 25 in which the opening side 26a of the accumulator shell 26 is joined to the compressor body container 10, and the compressor body fixed to the outer peripheral surface of the compressor body container 10.
- a leg member 309 that supports the container 10 and the accumulator container 25 and an elastic body 311 that supports the leg member 209 are provided.
- the leg members 309 are arranged close to the compressor main body container 10 whose inside is at a high temperature, it is difficult for the leg members 309 to be cooled by the accumulator shell 26 whose inside is at a low temperature due to the refrigerant gas. Prevents freezing.
- the elastic body 311 is prevented from being cooled by the accumulator container 25, which is at a low temperature, so that the elasticity of the elastic body 311 is prevented from being lowered. As a result, the vibration of the rotary compressor 1 can be stably absorbed and suppressed by the elastic body 311 .
- the bottom shell 10c of the compressor body container 10 is inserted into the opening side 26a of the accumulator shell 26, and the opening side 26a of the accumulator shell 26 is located on the compressor body container. 10 is joined to the bottom shell 10c.
- the existing compressor body container 10 can be used, and the bottom shell 10c of the compressor body container 10 can be easily applied by inserting the bottom shell 10c of the compressor body container 10 into the opening side 26a of the accumulator shell 26. It is possible to omit an attachment member such as an attachment band for attachment to the body, thereby suppressing an increase in manufacturing cost.
- the accumulator container 25 is indirectly connected to the bottom shell 10c of the compressor body container 10 via a separate member, noise and vibration caused by the natural frequency of the separate member can be avoided.
- the rotary compressor 1 of the embodiment includes three leg members 309 arranged at equal intervals in the circumferential direction of the compressor body container 10 .
- the entire rotary compressor 1 is stably supported with a simple structure using the three leg members 309 , and vibration of the rotary compressor 1 is suppressed by the elastic bodies 311 .
- the leg members 309 when the leg members 309 are joined to the compressor main body container 10, compared to the structure in which the leg members 309 are joined to the opening side 26a of the accumulator shell 26, the leg members 309 is separated from the leg member 309 from the accumulator shell 26, which becomes low temperature, and is in contact with the main shell 10a, which becomes high temperature. Therefore, the deterioration of the elasticity of the elastic body 311 can be further suppressed.
- Modification 1 differs from the embodiment in that a heat insulating member that covers the accumulator container 25 is provided.
- FIG. 6 is a perspective view showing a rotary compressor of Modification 1.
- FIG. 7 is a vertical cross-sectional view showing a main part of Modification 1.
- the rotary compressor 2 of Modification 1 has a heat insulating member 320 that covers the outer peripheral surface 26 c of the accumulator shell 26 of the accumulator container 25 . By covering the outer peripheral surface 26c of the accumulator shell 26 with the heat insulating member 320, heat transfer between the outer peripheral surface 26c and the air around the accumulator container 25 is interrupted.
- the heat insulating member 320 covering the outer peripheral surface 26c of the accumulator shell 26 prevents the air around the accumulator container 25 from becoming low temperature. As a result, the adhesion of frost (ice) around the accumulator container 25 is suppressed.
- the heat insulating member 320 is formed in a cup shape that covers the entire periphery of the accumulator shell 26 from the opposite opening side (bottom side) 26b to the outer peripheral surface 26c.
- the heat insulating member 320 includes a first tubular portion 320a that covers the lower end of the connecting pipe 104 and the connecting portion between the connecting pipe 104 and the gas-liquid separation pipe 31, a second tubular portion 320b that covers the lower end side of the accumulator intake pipe 27, have Further, in Modification 1 as well as in the embodiment, the leg member 309 to which the elastic body 311 is attached is fixed to the outer peripheral portion of the main shell 10a.
- the frost growing from the accumulator container 25 along the longitudinal direction of the connecting pipe 104 reaches the leg member 309 through the outer peripheral surface of the main shell 10a, is prevented from freezing. Furthermore, the frost formed on the accumulator container 25, the accumulator suction pipe 27, and the lower end of the connecting pipe 104 grows up to the bottom plate 330 of the outdoor unit, causing abnormal noise and vibration due to interference between the frost (ice) and other parts. You can prevent it from happening.
- the heat insulating member 320 is formed in the first tubular portion 320a along the longitudinal direction of the connecting pipe 104, for example, a notch formed to connect the upper end side and the lower end side of the accumulator shell 26. There is a notch formed in the second tubular portion 320b along the longitudinal direction of the accumulator suction pipe 27. As shown in FIG.
- the heat insulating member 320 is attached so as to cover the outside of the accumulator container 25 through each cut. Also, the heat insulating member 320 is fixed to the outer peripheral surface 26c of the accumulator shell 26 by, for example, an adhesive, an adhesive tape, or the like.
- the heat insulating member 320 is provided so as to cover at least a portion of the outer peripheral surface 26c of the accumulator container 25, thereby suppressing the adhesion of ice to the portion covered by the heat insulating member 320 around the accumulator container 25. is obtained.
- the modified example 1 by providing the heat insulating member 320 covering the accumulator container 25, it becomes more difficult for the leg member 309 to be cooled by the accumulator container 25, the inside of which is cooled by the refrigerant gas, compared to the embodiment. Freezing of 311 is further suppressed. Therefore, the elasticity of the elastic body 311 can be further suppressed, so that the vibration of the rotary compressor 2 can be stably absorbed and suppressed by the elastic body 311 .
- Modification 2 differs from the embodiment and Modification 1 in that a heat insulating portion is provided in the accumulator container 25 .
- FIG. 8 is a vertical cross-sectional view showing a main part of Modification 2. As shown in FIG. As shown in FIG. 8, the accumulator container 25 of the rotary compressor 3 of Modification 2 has a partition member 48 that is joined to the inside of the accumulator shell 26 and partitions the inside into the heat insulation section 35 and the accumulator section 36 .
- the heat insulating portion 35 has a hollow heat insulating space 35 a that blocks heat transfer between the accumulator container 25 and the leg member 309 . formed between In other words, the heat insulating portion 35 is formed inside the accumulator container 25 between the accumulator portion 36 and the opposite side 10e of the bottom shell 10c.
- the outer peripheral portion 48a of the partition member 48 is joined to the inner peripheral surface of the accumulator shell 26 by the fifth weld zone Z.
- the fifth welded portion Z is formed along the circumferential direction of the inner peripheral surface of the accumulator shell 26 . Therefore, the accumulator portion 36 into which the refrigerant is introduced in the accumulator shell 26 is formed by being sealed by the accumulator shell 26 , the bottom shell 10 c of the compressor main body container 10 and the partition member 28 .
- the outer peripheral portion 48 a of the partition member 28 is not limited to a shape curved downward of the accumulator shell 26 , and may be curved upward of the accumulator shell 26 .
- the fifth welded portion Z may be formed by a plurality of spot-like welded portions provided at predetermined intervals in the circumferential direction of the accumulator shell 26 .
- the leg member 309 is joined to a position adjacent to the heat insulating portion 35 on the opening side (upper end side) 26a of the outer peripheral surface 26c of the accumulator shell 26, and the elastic body 311 attached to the leg member 309 is a low-temperature accumulator. Cooling by the portion 36 is suppressed by the heat insulating portion 35 .
- leg member 309 is joined to the opening side 26a of the outer peripheral surface 26c of the accumulator shell 26 by the fourth welded portion Y such that the support piece 309b is located above the fixing piece 309a.
- the elastic body 311 attached to the support piece 309b is moved further away from the accumulator container 25, so frost generated around the accumulator container 25 passes through the leg member 309 and adheres to the elastic body 311, causing the elastic body 311 to move. Prevents freezing.
- leg member 309 may also be joined to the lower end portion of the outer peripheral surface of the main shell 10a in the second modification, and the heat insulating portion 35 disposed between the main shell 10a and the accumulator portion 36 provides a low temperature Cooling of the elastic body 311 by the accumulator portion 36 of the accumulator container 25 is further suppressed.
- the heat insulating portion 35 is provided inside the accumulator container 25, and the leg member 309 is joined to a position adjacent to the heat insulating portion 35 on the outer peripheral surface 26c of the accumulator shell 26. Therefore, the leg member 309 is more difficult to be cooled by the accumulator portion 36 whose inside is cooled by the refrigerant gas, and freezing of the elastic body 311 is further suppressed. Therefore, the elasticity of the elastic body 311 can be further suppressed, so that the vibration of the rotary compressor 3 can be stably absorbed and suppressed by the elastic body 311 . Also in Modification 2, like Modification 1, the heat insulating member 320 that covers at least a part of the outer peripheral surface of the accumulator shell 26 may be provided, and the effect of suppressing freezing of the elastic body 311 can be enhanced.
- the heat insulation space 35a of the heat insulation portion 35 is formed between the compressor body container 10 and the accumulator portion 36, mutual heat transfer is suppressed, and a decrease in compression efficiency of the rotary compressor 3 can be suppressed.
- each leg member 309 is joined to the annular member.
- each leg member 309 and the annular member may be integrally formed.
- the leg member 309 may be formed by a flange portion formed by bending the opening side 26a of the accumulator shell 26 or the lower end portion of the main shell 10a of the compressor main body container 10 .
- the rotary compressor of this embodiment is not limited to a so-called one-cylinder rotary compressor having one cylinder, and may be applied to a so-called two-cylinder rotary compressor having two cylinders. Moreover, although this embodiment has been described by taking a rotary compressor as an example, it may be applied to other compressors such as a scroll compressor, and the same effects as those of this embodiment can be obtained.
- Reference Signs List 1 2, 3 rotary compressor 10 compressor body container 10c bottom shell 11 motor 12 compression section 25 accumulator container 26 accumulator shell 26a opening side 26c outer peripheral surface 35 heat insulation section 35a heat insulation space 36 accumulator section 48 partition member 102 compression section suction pipe (intake pipe) 107 discharge pipe 309 leg member 309a fixed piece (fixed part) 309b support piece (support part) 310 base member 311 elastic body 320 heat insulating member
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- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
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Abstract
Description
特許文献2の圧縮機は圧縮部がスクロール式の圧縮機であり、圧縮部と圧縮部を駆動するモータとを収容する圧縮機本体容器の下部にアキュムレータ容器が直接的に接合されている。
特許文献3の圧縮機は、密閉容器の内部を圧力仕切壁で区画し、圧力仕切壁の上部を圧縮部及びモータが収容される圧縮機本体容器とし、圧力仕切壁の下部をアキュムレータ容器としている。
本実施例では、圧縮機の一例として、ロータリ圧縮機について説明する。図1は、実施例のロータリ圧縮機を示す縦断面図である。図2は、実施例のロータリ圧縮機の圧縮部を示す分解斜視図である。
シリンダ121には内部に円筒状の中空部130が設けられ、中空部130にはピストン125が配置されている。ピストン125は回転軸15の偏心部152に篏合している。シリンダ121には中空部130から外向きに設けられた溝部が設けられ、溝部にはベーン127が配置されている。シリンダ121には外周から溝部に通じるスプリング穴124が設けられ、スプリング穴124にはスプリング126が配置されている。ベーン127の一端がスプリング126によってピストン125に押し当てられることにより、シリンダ121の中空部130においてピストン125の外側の空間が吸入室133と吐出室131に区画される。シリンダ121には、外周から吸入室133に連通する吸入穴135が設けられている。吸入穴135には圧縮部吸入管102が接続される。上端板160Tには、上端板160Tを貫通して吐出室131に連通する吐出穴190が設けられている。上端板160Tには、吐出穴190を開閉する吐出弁200と、吐出弁200の反りを規制する吐出弁押さえ201と、がリベット202によって固定されている。上端板160Tの上側には、吐出穴190を覆う上端板カバー170が配置され、上端板160Tと上端板カバー170とで閉塞される上端板カバー室180を形成する。上端板カバー170は、上端板160Tとシリンダ121とを固定する複数のボルト175によって上端板160Tに固定される。上端板カバー170には、上端板カバー室180と圧縮機本体容器10の内部を連通する上端板カバー吐出穴172が設けられている。
回転軸15の回転によって、回転軸15の偏心部152に嵌合されたピストン125が公転運動することにより、吸入室133が容積を拡大しながら冷媒を吸入する。冷媒の吸入経路として、冷凍サイクルの低圧冷媒は、アキュムレータ吸入管27を通してアキュムレータ容器25の内部に吸入され、アキュムレータ容器25に吸入された冷媒に液が混ざっていた場合にはアキュムレータ容器25内の下部に滞留し、気体冷媒だけがアキュムレータ容器25の内部の上方に開口した気液分離管31に吸入される。気液分離管31に吸入された気体冷媒は、連絡管104と圧縮部吸入管102とを通って吸入室133に吸入される。冷凍サイクルから吸入される冷媒のうち液冷媒の量が多い場合は、アキュムレータ容器25の内部において液冷媒の液面が気液分離管31の開口端31bよりも上昇して多量の液冷媒が気液分離管31に流れ込む可能性がある。気液分離管31を通して圧縮部12に多量の液冷媒が流れ込むと圧縮部12を損傷させる原因となる。気液分離管31に多量の液冷媒が流れ込むことを防止するため、気液分離管31には液冷媒を少量ずつ気液分離管31に吸入させるための液戻し穴34が設けられている。
回転軸15の回転によって、回転軸15の偏心部152に嵌合されたピストン125が公転運動することにより、吐出室131が容積を縮小しながら冷媒を圧縮し、圧縮した冷媒の圧力が吐出弁200の外側の上端板カバー室180の圧力よりも高くなると、吐出弁200が開いて吐出室131から上端板カバー室180へ冷媒を吐出する。上端板カバー室180に吐出された冷媒は、上端板カバー170に設けられた上端板カバー吐出穴172から圧縮機本体容器10内に吐出される。
圧縮機本体容器10内の下部に封入されている潤滑油18は、回転軸の遠心力により回転軸の内部(図示せず)を通って圧縮部12に供給される。圧縮部12に供給された潤滑油18は、冷媒に巻き込まれ霧状となって冷媒とともに圧縮機本体容器10の内部に排出される。霧状となって圧縮機本体容器10の内部に排出された潤滑油18はモータ11の回転力によって遠心力で冷媒と分離され、油滴となって再び圧縮機本体容器10内の下部に戻る。しかしながら一部の潤滑油18は分離されずに冷媒とともに冷凍サイクルに排出される。冷凍サイクルに排出された潤滑油18は冷凍サイクルを循環してアキュムレータ容器25に戻り、アキュムレータ容器25の内部で分離されアキュムレータ容器25内の下部に滞留する。アキュムレータ容器25内の下部に滞留した潤滑油18は液冷媒とともに液戻し穴34を通って少量ずつ気液分離管31に流入し、吸入冷媒とともに吸入室133に吸入される。
次に、実施例のロータリ圧縮機1の特徴について説明する。本実施例における特徴には、図1に示すように、脚部材309及び弾性体311を有するロータリ圧縮機1の支持構造が含まれる。図3は、実施例のロータリ圧縮機を示す平面図である。図4は、実施例のロータリ圧縮機を示す斜視図である。図5は、実施例のロータリ圧縮機1が脚部材309及び弾性体311によって支持された状態を示す側面図である。
上述したように実施例のロータリ圧縮機1は、アキュムレータシェル26の開口側26aが圧縮機本体容器10に接合されたアキュムレータ容器25と、圧縮機本体容器10の外周面に固定されて圧縮機本体容器10及びアキュムレータ容器25を支持する脚部材309と、脚部材209を支持する弾性体311と、を備える。これにより、内部が高温になる圧縮機本体容器10に近づけて脚部材309が配置されるので、内部が冷媒ガスで低温になるアキュムレータシェル26によって脚部材309が冷却され難くなり、脚部材309が凍結することが抑えられる。このため、低温になるアキュムレータ容器25によって弾性体311が冷却されることが抑えられるので、弾性体311が有する弾性の低下を抑えられる。その結果、弾性体311によってロータリ圧縮機1の振動を安定的に吸収して振動を抑制できる。
変形例1は、アキュムレータ容器25を覆う断熱部材が設けられる点が実施例と異なる。図6は、変形例1のロータリ圧縮機を示す斜視図である。図7は、変形例1の要部を示す縦断面図である。図6及び図7に示すように、変形例1のロータリ圧縮機2は、アキュムレータ容器25のアキュムレータシェル26の外周面26cを覆う断熱部材320を有する。断熱部材320がアキュムレータシェル26の外周面26cを覆うことで、外周面26cとアキュムレータ容器25の周辺の空気との間の熱伝達が遮られる。従って、アキュムレータシェル26の外周面26cが低温になった場合であっても、アキュムレータシェル26の外周面26cを覆う断熱部材320によって、アキュムレータ容器25の周囲の空気が低温になるのを抑制することができるので、アキュムレータ容器25の周囲に霜(氷)が付着することが抑えられる。
変形例2は、アキュムレータ容器25内に断熱部が設けられる点が、実施例及び変形例1と異なる。図8は、変形例2の要部を示す縦断面図である。図8に示すように、変形例2のロータリ圧縮機3のアキュムレータ容器25は、アキュムレータシェル26の内部に接合され、この内部を断熱部35とアキュムレータ部36とに仕切る仕切り部材48を有する。
10 圧縮機本体容器
10c ボトムシェル
11 モータ
12 圧縮部
25 アキュムレータ容器
26 アキュムレータシェル
26a 開口側
26c 外周面
35 断熱部
35a 断熱空間
36 アキュムレータ部
48 仕切り部材
102 圧縮部吸入管(吸入管)
107 吐出管
309 脚部材
309a 固定片(固定部)
309b 支持片(支持部)
310 ベース部材
311 弾性体
320 断熱部材
Claims (8)
- 冷媒の吐出管及び吸入管が設けられた縦置き筒状の圧縮機本体容器と、前記吸入管に接続されるアキュムレータ容器と、前記圧縮機本体容器内に配置されて前記アキュムレータ容器から前記吸入管を介して吸入した冷媒を圧縮して前記吐出管から吐出する圧縮部と、前記圧縮機本体容器内に配置されて前記圧縮部を駆動するモータと、を備える密閉型圧縮機であって、
開口側が前記圧縮機本体容器に接合されたカップ状のアキュムレータシェルを有する前記アキュムレータ容器と、
前記圧縮機本体容器の外周面に固定され、前記圧縮機本体容器及び前記アキュムレータ容器を支持する脚部材と、
前記脚部材を支持する弾性体と、
を備える、密閉型圧縮機。 - 前記圧縮機本体容器は、円筒状のメインシェルと、前記メインシェルの下端に接合されたボトムシェルと、を有し、
前記圧縮機本体容器の前記ボトムシェルは、前記アキュムレータシェルの前記開口側に差し込まれて配置され、
前記アキュムレータシェルの前記開口側は、前記圧縮機本体容器の前記ボトムシェルに接合されている、
請求項1に記載の密閉型圧縮機。 - 前記脚部材は、前記メインシェルの外周面に接合されている、
請求項2に記載の密閉型圧縮機。 - 複数の前記脚部材が、前記圧縮機本体容器の周方向に対して等間隔に配置されている、
請求項1ないし3のいずれか1項に記載の密閉型圧縮機。 - 前記脚部材は、前記メインシェルの外周面に固定される固定部と、前記弾性体が取り付けられる支持部と、を有し、
前記固定部は、鉛直方向に沿って延び、
前記支持部は、水平方向に沿って延びる、
請求項3に記載の密閉型圧縮機。 - 前記アキュムレータ容器の外周面の少なくとも一部を覆う断熱部材を有する、
請求項1に記載の密閉型圧縮機。 - 前記弾性体は、前記メインシェルの径方向において前記メインシェルの外周面よりも外側に、前記メインシェルとは離間して配置されている、
請求項5に記載の密閉型圧縮機。 - 冷媒の吐出管及び吸入管が設けられた縦置き筒状の圧縮機本体容器と、前記吸入管に接続されるアキュムレータ容器と、前記圧縮機本体容器内に配置されて前記アキュムレータ容器から前記吸入管を介して吸入した冷媒を圧縮して前記吐出管から吐出する圧縮部と、前記圧縮機本体容器内に配置されて前記圧縮部を駆動するモータと、を備える密閉型圧縮機であって、
前記アキュムレータ容器は、開口側が前記圧縮機本体容器に接合されたカップ状のアキュムレータシェルと、前記アキュムレータシェルの内部に接合され、当該内部を断熱部とアキュムレータ部とに仕切る仕切り部材と、を有し、
前記断熱部は、前記仕切り部材と前記圧縮機本体容器との間に形成された断熱空間を有し、
前記圧縮機本体容器及び前記アキュムレータ容器を支持する脚部材が、前記アキュムレータシェルの外周面における前記断熱部に隣接する位置に接合され、
前記脚部材を支持する弾性体が、前記脚部材に取り付けられている、密閉型圧縮機。
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JP2001132674A (ja) * | 1999-11-04 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 密閉型ロータリー圧縮機 |
CN202117925U (zh) * | 2011-06-13 | 2012-01-18 | 广东美芝制冷设备有限公司 | 旋转压缩机 |
JP2019183721A (ja) * | 2018-04-06 | 2019-10-24 | 三菱重工サーマルシステムズ株式会社 | 圧縮機システム |
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JP2001132674A (ja) * | 1999-11-04 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 密閉型ロータリー圧縮機 |
CN202117925U (zh) * | 2011-06-13 | 2012-01-18 | 广东美芝制冷设备有限公司 | 旋转压缩机 |
JP2019183721A (ja) * | 2018-04-06 | 2019-10-24 | 三菱重工サーマルシステムズ株式会社 | 圧縮機システム |
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