JPWO2017154086A1 - Gas-liquid separator fixture, hermetic compressor, hermetic compressor manufacturing apparatus, and hermetic compressor manufacturing method - Google Patents

Abstract

  The gas-liquid separator fixing tool is a gas-liquid separator fixing tool for fixing the gas-liquid separator to the hermetic container of the hermetic compressor, the fixing part being fixed to the hermetic container, and extending from the fixing part. And a support part that supports the gas-liquid separator, and a plurality of protrusions that are disposed on the support part and restrain the gas-liquid separator. Moreover, the hermetic compressor according to the present invention includes the gas-liquid separator fixture described above. In addition, the hermetic compressor manufacturing apparatus includes a pressure cylinder that restrains the gas-liquid separator disposed in the gas-liquid separator fixture by applying pressure to the protrusion of the gas-liquid separator fixture. And a plurality of electrodes for causing the current to flow through the protrusion to melt the protrusion and to fix the gas-liquid separator to the gas-liquid separator fixture. Further, the method for manufacturing a hermetic compressor includes a step of arranging a gas-liquid separator in the above-described gas-liquid separator fixture, a step of applying pressure to the protrusions and restraining the gas-liquid separator with the protrusions, And a step of causing an electric current to flow through the protrusion to melt the protrusion and fix the gas-liquid separator to the gas-liquid separator fixture.

Description

  The present invention relates to a gas-liquid separator fixture for fixing a gas-liquid separator to a hermetic compressor, a hermetic compressor including the gas-liquid separator fixture, and gas-liquid separation using the gas-liquid separator fixture The present invention relates to an apparatus for manufacturing a hermetic compressor for fixing a compressor and a method for manufacturing a hermetic compressor.

  As a conventional gas-liquid separator fixture, for example, in Patent Document 1, a fastening member such as a bolt, a screw, and a rivet, or an accumulator and a sealed container of a compressor are used by welding or brazing such as arc welding. A connecting accumulator securing device is disclosed.

  Patent Document 2 and Patent Document 3 disclose an accumulator attachment device that connects an accumulator and a closed container of a compressor by projection welding. In the projection welding in Patent Document 2 and Patent Document 3, the accumulator and the hermetic container of the compressor are sealed by welding a protrusion provided on the support fitting of the accumulator mounting device and fixing it to an object to be welded such as a housing of the accumulator. Can be connected.

Japanese Patent Laid-Open No. 60-065289 JP 61-046869 A Japanese Utility Model Publication No. 57-120775

  However, when the fastening member is used in the accumulator fixing device of Patent Document 1, the number of parts of the accumulator fixing device increases and the number of manufacturing processes increases, which causes a problem that the manufacturing cost of the hermetic compressor increases. Moreover, when welding, such as arc welding, is used in Patent Document 1, the welding time for attaching the accumulator fixing device to the accumulator becomes longer, and the heating range during welding becomes wider. Therefore, when welding such as arc welding is used in Patent Document 1, the base material such as the accumulator housing is thinned, and the strength of the accumulator is reduced. There was a problem that there was a possibility that it could not be secured. In addition, for example, when arc welding such as TIG welding is used in Patent Document 1, additional materials such as a shielding gas or a filler rod are required, which increases the manufacturing cost of the hermetic compressor. there were.

  Moreover, in the projection welding in patent document 2 and patent document 3, a shift | offset | difference may arise in the contact part of the protrusion for welding and a to-be-welded object by the pressurization at the time of projection welding. Therefore, in the projection welding in Patent Literature 2 and Patent Literature 3, there is a possibility that poor welding occurs at the contact portion between the welding projection and the work piece, and the reliability with respect to the strength of the hermetic compressor may not be ensured. was there.

  The present invention is intended to solve the above-described problems, and it is possible to ensure reliability with respect to strength and to reduce a manufacturing cost. A gas-liquid separator fixture, a hermetic compressor, and a hermetic compressor An object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a hermetic compressor.

  A gas-liquid separator fixture according to the present invention is a gas-liquid separator fixture for fixing a gas-liquid separator to a sealed container of a hermetic compressor, and a fixing part fixed to the sealed container; A support portion extending from the fixed portion and supporting the gas-liquid separator; and a plurality of protrusions disposed on the support portion and restraining the gas-liquid separator.

  Moreover, the hermetic compressor according to the present invention includes the gas-liquid separator fixture described above.

  The manufacturing apparatus for a hermetic compressor according to the present invention applies pressure to the protrusion of the gas-liquid separator fixture by applying the gas-liquid separator arranged in the gas-liquid separator fixture. And a plurality of electrodes for causing a current to flow through the protrusions to melt the protrusions and fixing the gas-liquid separator to the gas-liquid separator fixture.

  The method for manufacturing a hermetic compressor according to the present invention includes a step of disposing the gas-liquid separator on the gas-liquid separator fixture described above, and applying the pressure to the protruding portion to install the gas-liquid separator. The step of restraining by the protrusion, and the step of passing an electric current through the protrusion to melt the protrusion and fixing the gas-liquid separator to the gas-liquid separator fixture.

  According to the present invention, by providing a plurality of protrusions for restraining the gas-liquid separator on the gas-liquid separator fixture, even when projection welding is used, the contact portion between the protrusions and the workpiece to be welded is provided. A shift can be avoided. In addition, when projection welding is used, the gas-liquid separator fixture and the gas-liquid separator are fixed by the protrusions, so the base material of the gas-liquid separator is reduced and the strength of the gas-liquid separator is reduced. There is nothing. Moreover, in this invention, since a secondary material is not used for fixing a gas-liquid separator to a gas-liquid separator fixing tool, a hermetic compressor can be manufactured at low cost. Therefore, according to the present invention, a gas-liquid separator fixture, a hermetic compressor, a hermetic compressor manufacturing apparatus, and hermetic compression that can ensure reliability in strength and can reduce manufacturing costs. A method for manufacturing a machine can be provided.

It is the schematic which shows an example of the internal structure of the hermetic compressor 100 which concerns on Embodiment 1 of this invention. It is the schematic which shows an example of the suction muffler 60 before fixing to the airtight container 10 in the airtight compressor 100 which concerns on Embodiment 1 of this invention. It is the schematic which shows an example of the suction muffler 60 after being fixed to the airtight container 10 in the airtight compressor 100 which concerns on Embodiment 1 of this invention. It is the schematic which shows the structure in the top view of the gas-liquid separator fixing tool 70 concerning Embodiment 1 of this invention. It is the schematic which shows an example of the structure of the manufacturing apparatus 200 of the hermetic compressor 100 which concerns on Embodiment 1 of this invention. In manufacturing apparatus 200 of hermetic compressor 100 according to Embodiment 1 of the present invention, it is a schematic view showing a state in which pressure is applied to protrusions 76 with a pressure cylinder 79. FIG. In manufacturing apparatus 200 for hermetic compressor 100 according to Embodiment 1 of the present invention, one protrusion 76 is provided on each of first support member 74a and second support member 74b of gas-liquid separator fixture 70. FIG. 8 is a schematic view showing a state in which pressure is applied to a protrusion 76 by a pressure cylinder 79. It is the schematic which shows an example of the state after the pressure application in FIG. It is the schematic which shows an example of the manufacturing method of the hermetic compressor 100 which concerns on Embodiment 1 of this invention. It is the schematic which shows an example of the suction muffler 60 after being fixed to the airtight container 10 in the airtight compressor 100 which concerns on Embodiment 2 of this invention. It is the schematic which shows the structure in the top view of the gas-liquid separator fixing tool 70 concerning Embodiment 2 of this invention. It is the schematic which shows an example of the manufacturing method of the hermetic compressor 100 which concerns on Embodiment 2 of this invention. It is the schematic which shows the structure in the top view of the gas-liquid separator fixing tool 70 concerning Embodiment 3 of this invention. It is the schematic which shows an example of the manufacturing method of the hermetic compressor 100 which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
A hermetic compressor 100 according to Embodiment 1 of the present invention will be described. FIG. 1 is a schematic diagram illustrating an example of an internal configuration of a hermetic compressor 100 according to the first embodiment. In the following drawings including FIG. 1, the size and shape of each component or the relationship between the sizes of each component may be different from the actual one. Moreover, in the following drawings, the same code | symbol is attached | subjected to the same or similar member or part, or the code | symbol is abbreviate | omitted. Moreover, in the following drawings including FIG. 1, the front-rear, left-right, or top-bottom positional relationship between the constituent members of the hermetic compressor 100 is, as a general rule, set in a state where the hermetic compressor 100 can be used. The positional relationship of time.

  The hermetic compressor 100 is a fluid machine that is used in a refrigeration cycle apparatus such as an air conditioner and discharges a low-pressure gas refrigerant sucked into the hermetic container 10 as a high-pressure gas refrigerant. In FIG. 1, a rolling piston type rotary compressor is illustrated as an example of the hermetic compressor 100.

  The sealed container 10 of the hermetic compressor 100 is configured as a cylinder-shaped container. The hermetic container 10 is composed of a main body portion 1 having a U-shaped longitudinal section and a lid portion 3 having an inverted U-shaped longitudinal section, and an outer surface of the opening portion of the lid portion 3 is an opening portion of the main body portion 1. It is fixed to the inner surface of the. The fixed portion between the main body 1 and the lid 3 is joined by welding or the like, for example. In addition, a base 5 for arranging the hermetic compressor 100 in a vertical type is provided on the outer surface of the bottom surface of the main body 1.

  A discharge pipe 7 penetrates and is fixed to the upper surface of the lid 3 of the sealed container 10. The discharge pipe 7 is a refrigerant pipe that discharges high-pressure gas refrigerant to the outside of the sealed container 10. The fixed portion between the discharge pipe 7 and the lid 3 is joined, for example, by brazing.

  Further, a glass terminal 9 is disposed on the upper surface of the lid 3 of the sealed container 10. The glass terminal 9 provides an interface for connecting an external power source. The external power supply is a power supply device that supplies power to the hermetic compressor 100, and a general commercial AC power supply having an AC frequency of 50 Hz or 60 Hz, or an inverter power supply capable of changing the AC frequency is used. When the frequency variable inverter power supply is used, the number of revolutions of the hermetic compressor 100 can be changed. Therefore, the hermetic compressor 100 can control the discharge amount of the high-pressure gas refrigerant from the discharge pipe 7. . In the following drawings including FIG. 1, the external power source connected to the glass terminal 9 is not shown.

  Inside the sealed container 10, an electric motor unit 20, a crankshaft 30, and a compression mechanism unit 40 are accommodated. The electric motor unit 20 is disposed above the compression mechanism unit 40. The crankshaft 30 is disposed between the electric motor unit 20 and the compression mechanism unit 40 at the center of the sealed container 10 and extends in the vertical direction at the center of the sealed container 10. In the hermetic compressor 100, the electric motor unit 20 is also referred to as an electric element, and the compression mechanism unit 40 is also referred to as a compression element.

  The electric motor unit 20 is configured as a motor that generates a rotational driving force using electric power supplied from an external power source and transmits the rotational driving force to the compression mechanism unit 40 via the crankshaft 30. The electric motor unit 20 includes a stator 22 having a hollow cylindrical appearance in a top view, and a cylindrical rotor 24 that is rotatably disposed inside the inner surface of the stator 22. The stator 22 is fixed to the inner surface of the main body 1 of the hermetic container 10 and is connected to the glass terminal 9 via a conducting wire 26. The electric motor unit 20 can rotate the rotor 24 inside the inner surface of the stator 22 by supplying electric power from an external power source to the coil wound around the stator 22 via the conductor 26. In the hermetic compressor 100, for example, a DC brushless motor or the like is used as the electric motor unit 20.

  A crankshaft 30 is fixed to the center of the rotor 24 through the rotor 24. The crankshaft 30 is a rotating shaft that fixes the rotor 24 on the outer surface of the crankshaft 30 and transmits the rotational driving force of the rotor 24 to the compression mechanism 40.

  Further, the crankshaft 30 has a cylindrical eccentric portion 32 disposed inside the compression mechanism portion 40. A rolling piston 34 is attached to the outer surface of the eccentric portion 32 so as to be rotatable along the outer surface of the eccentric portion 32. In the following drawings including FIG. 1, although not shown, the refrigerating machine oil 50 stored in the bottom of the main body 1 of the sealed container 10 is compressed on the crankshaft 30 by centrifugal force due to the rotational movement of the crankshaft 30. An oil hole for supplying to the mechanism unit 40 is provided.

  The compression mechanism unit 40 compresses the low-pressure gas refrigerant sucked into the sealed container 10 into a high-pressure gas refrigerant by the rotational driving force supplied from the electric motor unit 20, and the compressed high-pressure gas refrigerant is compressed into the compression mechanism unit. 40 is discharged upward.

  The compression mechanism unit 40 includes a hollow cylindrical cylinder 41. The outer surface of the cylinder 41 is fixed to the inner surface of the main body 1 of the sealed container 10. The hollow portion 41a of the cylinder 41 accommodates the eccentric portion 32 of the crankshaft 30 and the rolling piston 34. That is, the cylinder 41 is configured such that the eccentric portion 32 of the crankshaft 30 and the rolling piston 34 can eccentrically rotate in the hollow portion 41 a by the rotation of the crankshaft 30.

  The cylinder 41 is provided with a vane groove 41b extending in a radial direction from the inner surface of the cylinder 41 constituting the hollow portion 41a of the cylinder 41. A vane 42 is accommodated in the vane groove 41 b of the cylinder 41. The vane 42 is pressed against the surface of the rolling piston 34 by the restoring force of an elastic body such as a spring provided inside the vane groove 41b, and reciprocates inside the vane groove 41b by the eccentric motion of the rolling piston 34. This is a sliding member configured as described above.

  A main bearing 43 is disposed on the upper hollow disk surface of the cylinder 41. A sub-bearing 44 is disposed on the lower hollow disk surface of the cylinder 41. The main bearing 43 and the auxiliary bearing 44 are sliding bearings that support the crankshaft 30 so as to be slidable.

  The main bearing 43 has a hollow disk shape when viewed from above. The main bearing 43 has a fixed portion 43a that is fixed to the upper hollow disk surface of the cylinder 41, and a bearing portion 43b that slidably supports the outer surface of the crankshaft 30. In addition, the main bearing 43 is displayed as two L-shaped members in FIG. Moreover, the main bearing 43 is being fixed to the hollow disc surface above the cylinder 41 with the volt | bolt etc., for example.

  The sub-bearing 44 has a hollow disc shape when viewed from below. The sub-bearing 44 has a fixed portion 44a that is fixed to the lower hollow disk surface of the cylinder 41, and a bearing portion 44b that slidably supports the outer surface of the crankshaft 30. Note that the sub-bearing 44 is shown as two L-shaped members in FIG. The auxiliary bearing 44 is fixed to the lower hollow disk surface of the cylinder 41 with, for example, bolts.

  In the compression mechanism 40, a sealable space surrounded by the rolling piston 34, the cylinder 41, the vane 42, the fixing part 43 a of the main bearing 43, and the fixing part 44 a of the auxiliary bearing 44 is sucked into the sealed container 10. A compression chamber for compressing the low-pressure gas refrigerant formed is configured. The high-pressure gas refrigerant compressed in the compression chamber is discharged from the discharge port provided in the main bearing 43. The discharge port provided in the main bearing 43 is not shown in the following drawings including FIG.

  Next, the suction muffler 60 fixed to the hermetic container 10 of the hermetic compressor 100 according to the first embodiment will be described with reference to FIGS. 2 and 3 in addition to FIG. FIG. 2 is a schematic diagram illustrating an example of the suction muffler 60 before being fixed to the sealed container 10 in the hermetic compressor 100 according to the first embodiment. In FIG. 2, the attachment direction of the suction muffler 60 is illustrated by arrows. FIG. 3 is a schematic diagram illustrating an example of the suction muffler 60 after being fixed to the hermetic container 10 in the hermetic compressor 100 according to the first embodiment.

  As shown in FIGS. 1 to 3, a housing 62 of a suction muffler 60 is attached to the gas-liquid separator fixture 70 disposed on the outer surface of the sealed container 10 on the outer surface of the main body 1 of the sealed container 10. It is fixed. An inflow pipe 64 is fixed to the top of the housing 62 of the suction muffler 60 through the housing 62. The inflow pipe 64 is, for example, a refrigerant pipe through which a low-pressure gas refrigerant or a two-phase refrigerant having a high dryness flowing out from the evaporator of the refrigeration cycle apparatus flows into the housing 62 of the suction muffler 60. In addition, one end of a suction pipe 66 that communicates between the suction muffler 60 and the sealed container 10 passes through and is fixed to the bottom of the housing 62 of the suction muffler 60. A suction port 68 configured to communicate with the compression chamber of the compression mechanism 40 is provided on the outer surface of the main body 1 of the sealed container 10, and the other end of the suction pipe 66 is a suction port 68. It is fixed.

  The suction muffler 60 is a gas-liquid separator that functions as an accumulator having a refrigerant storage function for storing excess refrigerant and a gas-liquid separation function for retaining liquid refrigerant that is temporarily generated when the operating state changes. is there. In the suction muffler 60, the gas-liquid separation function can prevent a large amount of liquid refrigerant from flowing into the sealed container 10 and liquid compression by the hermetic compressor 100. The suction muffler 60 also has a function as a silencer that reduces or eliminates noise generated by the refrigerant flowing from the inflow pipe 64.

  In the above description, the hermetic compressor 100 is used as a rotary compressor, and the suction muffler 60 as a gas-liquid separator is attached. However, the hermetic compressor 100 is used as a scroll compressor, and the gas-liquid separator is used. It is good also as a structure which attaches a certain accumulator.

  Next, the operation of the hermetic compressor 100 of the first embodiment will be described.

  When the crankshaft 30 is rotated by driving the electric motor unit 20, the eccentric part 32 and the rolling piston 34 housed in the cylinder 41 are eccentrically rotated together with the crankshaft 30. In conjunction with the eccentric rotation of the rolling piston 34, the vane 42 provided inside the vane groove 41b of the cylinder 41 performs a piston motion. The low-pressure gas refrigerant that has flowed into the compression mechanism portion 40 from the suction pipe 66 through the suction port 68 enters the rolling piston 34, the cylinder 41, the vane 42, the fixed portion 43a of the main bearing 43, and the fixed portion 44a of the auxiliary bearing 44. It flows into the compression chamber which is an enclosed sealed space. The low-pressure gas refrigerant that has flowed into the compression chamber is compressed into the high-pressure gas refrigerant as the volume of the compression chamber decreases due to the eccentric rotation of the rolling piston 34. The high-pressure gas refrigerant is discharged into the high-pressure space inside the sealed container 10 located between the electric motor unit 20 and the compression mechanism unit 40 through the discharge port provided in the main bearing 43, and through the discharge pipe 7. Then, it is discharged out of the sealed container 10.

  Next, the structure of the gas-liquid separator fixture 70 according to Embodiment 1 will be described with reference to FIG.

  FIG. 4 is a schematic view showing the structure of the gas-liquid separator fixture 70 according to the first embodiment in a top view. The gas-liquid separator fixture 70 includes a fixing portion 72 fixed to the outer surface of the hermetic container 10 of the hermetic compressor 100, a support portion 74 extending from the fixing portion 72 and supporting the suction muffler 60, and a support. It can be configured to include a plurality of protrusions 76 that are disposed in the portion 74 and restrain the suction muffler 60.

  For example, as shown in FIG. 4, the fixing portion 72 can be configured as a curved plate-like member having an arc-shaped fixing surface 72 a along the outer surface of the sealed container 10 in a top view.

  As shown in FIG. 4, the support portion 74 includes a first support member 74 a that extends from the first end portion 72 b of the fixing portion 72 and extends away from the sealed container 10 in a top view. Have. The support portion 74 extends from the second end portion 72c of the fixing portion 72 in a top view, and extends in parallel with the first support member 74a in a direction away from the sealed container 10. 2 support members 74b. The first support member 74a is provided with a first inner side surface 74c, and the second support member 74b is provided with a second inner side surface 74d facing the first inner side surface 74c. The first support member 74a and the second support member 74b are configured as flat plate-like members, for example.

  A first protrusion 76a and a second protrusion 76b are provided on the first inner surface 74c of the first support member 74a. A third projecting portion 76c and a fourth projecting portion 76d are provided on the second inner surface 74d of the second support member 74b. In the gas-liquid separator fixture 70 of the first embodiment, the four protrusions 76 of the first protrusion 76a, the second protrusion 76b, the third protrusion 76c, and the fourth protrusion 76d are used. The outer surface of the housing 62 of the suction muffler 60 can be restrained. The protruding portion 76 can be provided on the support portion 74 by, for example, pressing.

  The gas-liquid separator fixture 70 may be configured to fix the fixing portion 72 to the sealed container 10 by brazing or the like, or may be configured integrally with the sealed container 10.

  Next, the structure of the manufacturing apparatus 200 for the hermetic compressor 100 according to the first embodiment will be described.

  FIG. 5 is a schematic diagram showing the structure of the manufacturing apparatus 200 for the hermetic compressor 100 according to the first embodiment. The manufacturing apparatus 200 of the hermetic compressor 100 is configured as a welding apparatus such as a resistance welder.

  As shown in FIG. 5, the manufacturing apparatus 200 of the hermetic compressor 100 applies a suction muffler 60 disposed in the gas-liquid separator fixture 70 to the protrusion 76 of the gas-liquid separator fixture 70. And a pressurizing cylinder 79 to be restrained. The pressurizing cylinder 79 can be configured as, for example, a pneumatic cylinder or a hydraulic cylinder whose pressure is adjusted by a flow rate adjusting valve.

  In addition, the manufacturing apparatus 200 of the hermetic compressor 100 includes a plurality of electrodes 80 that cause a current to flow through the protrusions 76 to melt the protrusions 76 and fix the suction muffler 60 to the gas-liquid separator fixture 70. The electrode 80 can be configured as, for example, a pure metal electrode such as a pure tungsten electrode or a pure molybdenum electrode, or an alloy electrode such as a copper alumina alloy electrode.

  Further, the manufacturing apparatus 200 of the hermetic compressor 100 has an arcuate recess 90a along the outer surface of the hermetic container 10, and supports the movement range of the hermetic container 10 during the manufacturing of the hermetic compressor 100. A stand 90 is provided.

  Moreover, the manufacturing apparatus 200 of the hermetic compressor 100 includes, for example, a welding power source 82 that converts AC power supplied from a commercial AC power source into power used for welding, and amplifies the current flowing from the welding power source 82 for welding. And a welding transformer 84 that flows to the electrode 80. The welding power source 82 is configured as an inverter type power source, for example.

  As shown in FIG. 5, the electrode 80 may be supported by, for example, a housing of the welding transformer 84, or a welding work table or the like may be provided in the manufacturing apparatus 200 of the hermetic compressor 100. It is good also as a structure supported on the worktable for welding.

  FIG. 6 is a schematic diagram illustrating a state in which pressure is applied to the protrusion 76 by the pressure cylinder 79 in the manufacturing apparatus 200 of the hermetic compressor 100 according to the first embodiment. In FIG. 6, the protrusion 76 to which pressure is applied is surrounded by a dotted line as a region A. Further, the pressure direction of the pressure cylinder 79 is indicated by a black arrow.

  As shown in FIG. 6, in the manufacturing apparatus 200 of the hermetic compressor 100, the hermetic container 10 of the hermetic compressor 100 is disposed on the support base 90, and the suction muffler 60 is disposed on the gas-liquid separator fixture 70. Can start welding. Next, in the manufacturing apparatus 200 of the hermetic compressor 100, the suction muffler 60 can be restrained by applying pressure to the protrusion 76 of the gas-liquid separator fixture 70. Next, in the manufacturing apparatus 200 of the hermetic compressor 100, the suction muffler 60 can be fixed to the gas-liquid separator fixture 70 by flowing an electric current from the electrode 80 to the protrusion 76 to melt the protrusion 76.

  As shown in region A of FIG. 6, the first support member 74 a of the gas-liquid separator fixture 70 is provided with two protrusions 76 that contact the outer surface of the housing 62 of the suction muffler 60. . Similarly, the second support member 74 b of the gas-liquid separator fixture 70 is provided with two protrusions 76 that come into contact with the outer surface of the housing 62 of the suction muffler 60.

  In the manufacturing apparatus 200 of the hermetic compressor 100, the suction muffler 60 is restrained by the four protrusions 76 of the gas-liquid separator fixture 70, and therefore when the pressure is applied to the protrusion 76 by the pressure cylinder 79. Even if it exists, it can prevent that the suction muffler 60 moves. Therefore, in the manufacturing apparatus 200 of the hermetic compressor 100, by preventing the movement of the suction muffler 60, it is possible to prevent poor contact of the protrusions 76 with the suction muffler 60 and avoid poor welding.

On the other hand, consider a case where only one protrusion 76 is provided on each of the first support member 74 a and the second support member 74 b of the gas-liquid separator fixture 70. FIG. 7 shows the manufacturing apparatus 200 of the hermetic compressor 100 according to the first embodiment. One protrusion 76 is provided on the first support member 74a and the second support member 74b of the gas-liquid separator fixture 70. FIG. 5 is a schematic view showing a state in which pressure is applied to the protrusion 76 by the pressurizing cylinder 79. In FIG. 7, the protrusion 76 to which pressure is applied is surrounded by a dotted line as a region B. In FIG. 7, the pressure direction of the pressure cylinder 79 is indicated by a black arrow. FIG. 8 is a schematic diagram illustrating an example of a state after application of pressure in FIG.

  As shown in region B of FIG. 7, when only one protrusion 76 is provided on each of the first support member 74 a and the second support member 74 b of the gas-liquid separator fixture 70, When pressure is applied to the protrusion 76, the movement of the suction muffler 60 may not be prevented as shown in FIG. As shown in FIG. 8, when the position of the suction muffler 60 is moved, poor contact of the protrusions 76 with the suction muffler 60 may occur, resulting in poor welding.

  Therefore, in the manufacturing apparatus 200 of the hermetic compressor 100, the suction muffler 60 is restrained by the four protrusions 76 of the gas-liquid separator fixture 70, thereby preventing poor contact of the protrusions 76 with the suction muffler 60, Welding defects can be avoided.

  Next, a manufacturing method of the hermetic compressor 100 according to the first embodiment will be described with reference to FIG.

  FIG. 9 is a schematic diagram illustrating an example of a method for manufacturing the hermetic compressor 100 according to the first embodiment. In FIG. 9, the pressurizing direction at the time of manufacturing the hermetic compressor 100 is indicated by a solid line arrow. In addition, a direction from the center portion of the housing 62 of the suction muffler 60 toward the center portion of the sealed container 10 is indicated by a broken-line arrow with the x direction as the direction.

  In the hermetic compressor 100 according to the first embodiment, the suction muffler 60 is fixed to the gas-liquid separator fixture 70 by projection welding. In projection welding, a plurality of electrodes 80 are used to pressurize the protrusions 76 and melt the protrusions 76 by heat generated by passing an electric current through the protrusions 76, and fix the casing 62 of the suction muffler 60 to a gas-liquid separator. This is a type of resistance welding to be fixed to the tool 70.

  In the method for manufacturing the hermetic compressor 100 according to the first embodiment, first, the housing 62 of the suction muffler 60 is disposed on the gas-liquid separator fixture 70. In FIG. 9, the housing 62 of the suction muffler 60 includes the first protrusion 76a and the second protrusion 76b of the first support member 74a, and the third protrusion 76c and the second protrusion 76c of the second support member 74b. The four protrusions 76d are arranged so as to sandwich the outer surface of the housing 62 of the suction muffler 60.

  Next, in the manufacturing method of the hermetic compressor 100 according to the first embodiment, the casing 80 of the suction muffler 60 is formed by applying pressure to the protrusion 76 using the electrode 80 disposed on the support portion 74. Restrained by the protrusion 76. In FIG. 9, the first electrode 80a is disposed on the outer surface side of the first support member 74a, and the second electrode 80b is disposed on the outer surface side of the second support member 74b. By pressurizing the first electrode 80a in the direction of the second electrode 80b, the first protrusion 76a, the second protrusion 76b, the third protrusion 76c, and the fourth protrusion 76d are suction mufflers. The housing 62 of the suction muffler 60 is restrained by contacting the housing 62 of the 60. By applying pressure and restraining the suction muffler 60 on the protrusion 76, it is possible to avoid the displacement of the suction muffler 60 in the x direction during the manufacture of the hermetic compressor 100.

  Next, in the manufacturing method of the hermetic compressor 100 according to the first embodiment, using the first electrode 80a and the second electrode 80b, current is passed through the protrusion 76 to melt the protrusion 76, and the suction is performed. The muffler 60 is fixed to the gas-liquid separator fixture 70. In the manufacturing method of the hermetic compressor 100 according to the first embodiment, since the displacement of the suction muffler 60 in the x direction can be avoided by pressurizing the protrusion 76, the casing 62 and the gas-liquid of the suction muffler 60 can be avoided. A welding failure with the separator fixture 70 can be avoided.

  As described above, the gas-liquid separator fixture 70 of the first embodiment is a gas-liquid separator fixture for fixing the suction muffler 60, which is an example of a gas-liquid separator, to the hermetic compressor 100. 70, a fixed portion 72 fixed to the hermetic container 10 of the hermetic compressor 100, a support portion 74 extending from the fixed portion 72 and supporting the suction muffler 60, and disposed on the support portion 74. And a plurality of protrusions 76 for restraining the muffler 60. Further, the hermetic compressor 100 according to the first embodiment includes the gas-liquid separator fixture 70 described above.

  In addition, the manufacturing apparatus 200 of the hermetic compressor 100 applies a suction muffler 60, which is an example of a gas-liquid separator disposed in the gas-liquid separator fixture 70, to the protrusion 76 of the gas-liquid separator fixture 70. And a plurality of electrodes 80 for fixing the suction muffler 60 to the gas-liquid separator fixture 70 by applying a current to the protrusion 76 to melt the protrusion 76. Further, in the manufacturing method of the hermetic compressor 100 according to the first embodiment, the step of placing the suction muffler 60 as an example of the gas-liquid separator in the gas-liquid separator fixture 70 described above and the pressure on the protrusion 76 are described. And a step of restraining the suction muffler 60 by the protrusion 76 and a step of passing an electric current through the protrusion 76 to melt the protrusion 76 and fixing the suction muffler 60 to the gas-liquid separator fixture 70.

  According to the above-described configuration, the plurality of protrusions 76 that restrain the suction muffler 60 are provided on the gas-liquid separator fixture 70, so that the protrusion 76 and the housing 62 of the suction muffler 60 can be used even when projection welding is used. It is possible to avoid the occurrence of deviation in the contact portion with the. In addition, when projection welding is used, the gas-liquid separator fixture 70 and the suction muffler 60 are fixed by the protrusions 76, so that the base material of the suction muffler 60 is reduced and the strength of the suction muffler 60 is reduced. There is no. In the present invention, since the auxiliary material is not used to fix the suction muffler 60 to the gas-liquid separator fixture 70, the hermetic compressor 100 can be manufactured at low cost. Therefore, according to the above-described configuration, the gas-liquid separator fixture 70, the hermetic compressor 100, and the hermetic compressor 100 that can ensure the reliability of strength such as durability and can reduce the manufacturing cost. The manufacturing apparatus 200 and the manufacturing method of the hermetic compressor 100 can be provided.

  Further, if the suction muffler 60 is fixed by projection welding, the welding time is short and the heating range can be narrowed. Therefore, energy during manufacturing can be reduced, and the hermetic compressor 100 can be manufactured at low cost.

  Further, in the gas-liquid separator fixture 70 according to the first embodiment, the support part 74 is separated from the first support member 74a extending in a direction away from the sealed container 10 and the sealed container 10 in a top view. The first support member 74a in the direction and the second support member 74b extending in parallel with a gap therebetween, and the plurality of protrusions 76 are formed on the first support member 74a and the second support member 74b. Two each can be arranged. That is, for example, the first protrusion 76a and the second protrusion 76b are provided on the first inner surface 74c of the first support member 74a, and the second inner surface 74d of the second support member 74b is provided on the second inner surface 74d. The third protrusion 76c and the fourth protrusion 76d can be provided. According to the above-described configuration, the suction muffler 60 is restrained by the first protrusion 76a, the second protrusion 76b, the third protrusion 76c, and the fourth protrusion 76d, so that stable projection welding is performed. It becomes possible.

Embodiment 2. FIG.
A gas-liquid separator fixture 70 according to Embodiment 2 of the present invention will be described with reference to FIGS. The gas-liquid separator fixture 70 of the second embodiment is a modification of the above-described first embodiment. Since the contents except the structure of the gas-liquid separator fixture 70 and the manufacturing method of the hermetic compressor 100 are the same as those in the first embodiment, the description thereof is omitted.

  FIG. 10 is a schematic diagram illustrating an example of the suction muffler 60 after being fixed to the hermetic container 10 in the hermetic compressor 100 according to the second embodiment. FIG. 11 is a schematic diagram showing the structure of the gas-liquid separator fixture 70 according to the second embodiment in a top view. FIG. 12 is a schematic diagram illustrating an example of a method for manufacturing the hermetic compressor 100 according to the second embodiment. In FIG. 12, the pressurizing direction at the time of manufacturing the hermetic compressor 100 is indicated by a solid arrow. Further, the direction perpendicular to the direction connecting the center portion of the casing 62 of the suction muffler 60 and the center portion of the sealed container 10 is defined as a y direction, and is indicated by a dashed arrow.

  As shown in FIG. 10, the gas-liquid separator fixture 70 according to the second embodiment has a fixing portion 72 that is fixed to the sealed container 10 and a gap from the outer surface of the sealed container 10 in a side view. A support portion 74 extending in parallel with the fixed portion 72 and a connecting portion 78 for connecting the upper end portion of the fixed portion 72 and the lower end portion of the support portion 74 are provided. The gas-liquid separator fixture 70 of the second embodiment is configured as a step-like plate-like member in a side view.

  As shown in FIG. 11, the support portion 74 has an arc-shaped support surface 74 e along the outer surface of the housing 62 of the suction muffler 60. On the support surface 74e, a fifth protrusion 76e and a sixth protrusion 76f are arranged in contact with the outer surface of the housing 62 of the suction muffler 60.

  Next, a manufacturing method of the hermetic compressor 100 according to the second embodiment will be described with reference to FIG.

  In the method for manufacturing the hermetic compressor 100 according to the second embodiment, first, the fifth protrusion 76e and the sixth protrusion 76f are brought into contact with the outer surface of the casing 62 of the suction muffler 60. To place.

  Next, in the method for manufacturing the hermetic compressor 100 according to the second embodiment, the third electrode 80c is provided with the fifth protrusion 76e and the sixth protrusion on the outer surface of the housing 62 of the suction muffler 60. It arrange | positions in the surface located in the reverse side of the arrangement surface of the part 76f. In addition, the fourth electrode 80d is disposed on the surface located above the connecting portion 78 and on the opposite side of the support surface 74e of the support portion 74. By pressing the third electrode 80c in the direction of the fourth electrode 80d, the fifth protrusion 76e and the sixth protrusion 76f are pressed against the casing 62 of the suction muffler 60, and the casing of the suction muffler 60 62 is restrained. By applying pressure and restraining the suction muffler 60 on the fifth protrusion 76e and the sixth protrusion 76f, the displacement of the suction muffler 60 in the y direction during the manufacture of the hermetic compressor 100 is avoided. be able to.

  Next, in the method for manufacturing the hermetic compressor 100 according to the second embodiment, a current is supplied to the fifth protrusion 76e and the sixth protrusion 76f using the third electrode 80c and the fourth electrode 80d. The suction muffler 60 is fixed to the gas-liquid separator fixture 70. In the manufacturing method of the hermetic compressor 100 according to the first embodiment, the displacement of the suction muffler 60 in the y direction can be avoided by pressurizing the fifth protrusion 76e and the sixth protrusion 76f. Therefore, in the method for manufacturing the hermetic compressor 100 according to the second embodiment, it is possible to avoid poor welding between the casing 62 of the suction muffler 60 and the gas-liquid separator fixture 70.

  As described above, in the gas-liquid separator fixture 70 according to the second embodiment, the support 74 has the support surface 74e along the outer surface of the suction muffler 60, which is an example of the gas-liquid separator. In addition, the plurality of protrusions 76 can be configured to be arranged on the support surface 74e. That is, in the gas-liquid separator fixture 70 according to the second embodiment, the fifth protrusion 76e and the sixth protrusion 76f can be arranged on the support surface 74e. According to the above-described configuration, stable projection welding can be performed with only the two protrusions 76, that is, the fifth protrusion 76e and the sixth protrusion 76f. For example, the number of press working steps can be reduced and the cost can be reduced. Thus, the hermetic compressor 100 can be manufactured.

Embodiment 3 FIG.
A gas-liquid separator fixture 70 according to Embodiment 3 of the present invention will be described with reference to FIGS. 13 and 14. The gas-liquid separator fixture 70 of the third embodiment is a modification of the above-described first embodiment. Since the contents except the structure of the gas-liquid separator fixture 70 and the manufacturing method of the hermetic compressor 100 are the same as those in the first embodiment, the description thereof is omitted.

  FIG. 13 is a schematic diagram showing the structure of the gas-liquid separator fixture 70 according to the third embodiment in a top view. FIG. 14 is a schematic diagram illustrating an example of a method for manufacturing the hermetic compressor 100 according to the third embodiment. In FIG. 14, the pressurizing direction at the time of manufacturing the hermetic compressor 100 is indicated by a solid arrow.

  As shown in FIG. 13, the gas-liquid separator fixture 70 of the third embodiment has a fixing portion 72 that is fixed to the sealed container 10. Further, the support portion 74 includes an L-shaped third support member 74f that extends from the first end portion 72b of the fixed portion 72 and extends in a direction away from the sealed container 10 in a top view. Yes. The support portion 74 has an L-shaped fourth support member 74 g that extends from the second end portion 72 c of the fixed portion 72 and extends in a direction away from the sealed container 10. The first convex bent portion 76g of the third support member 74f and the second convex bent portion 76h of the fourth support member 74g are configured to face each other. The first convex bent portion 76g and the second convex bent portion 76h are configured as a protruding portion 76 in the gas-liquid separator fixture 70.

  Next, a manufacturing method of the hermetic compressor 100 according to the third embodiment will be described with reference to FIG.

  In the manufacturing method of the hermetic compressor 100 according to the third embodiment, first, the first convex bent portion 76g and the second convex bent portion 76h are provided on the outer surface of the casing 62 of the suction muffler 60. Place it so that it touches.

  Next, in the method for manufacturing the hermetic compressor 100 according to the third embodiment, the fifth electrode 80e includes the first convex bent portion 76g and the second convex shape in the housing 62 of the suction muffler 60. It arrange | positions on the surface located on the opposite side to the circular arc surface which the bending part 76h surrounds. The sixth electrode 80f is disposed on a surface located on the opposite side to the surface constituting the first convex bent portion 76g. Further, the seventh electrode 80g is disposed on a surface located on a surface constituting the second convex bent portion 76h. By pressing the fifth electrode 80e in the direction of the midpoint of the line segment connecting the sixth electrode 80f and the seventh electrode 80g, the first convex bent portion 76g and the second convex bent portion 76 h is pressed against the housing 62 of the suction muffler 60. Since the housing 62 of the suction muffler 60 is restrained by pressing the first convex bent portion 76g and the second convex bent portion 76h against the housing 62, it is possible to avoid the displacement of the suction muffler 60. it can.

  Next, in the manufacturing method of the hermetic compressor 100 according to the third embodiment, the first convex bent portion 76g using the fifth electrode 80e, the sixth electrode 80f, and the seventh electrode 80g. The current muffler 60 is fixed to the gas-liquid separator fixture 70 by causing the current to flow through the second convex bent portion 76h to be melted. In the manufacturing method of the hermetic compressor 100 according to the third embodiment, the displacement of the suction muffler 60 can be avoided by pressurizing the first convex bent portion 76g and the second convex bent portion 76h. Therefore, in the method for manufacturing the hermetic compressor 100 according to the third embodiment, it is possible to avoid poor welding between the casing 62 of the suction muffler 60 and the gas-liquid separator fixture 70.

  As described above, in the gas-liquid separator fixture 70 according to the third embodiment, the support portion 74 extends in the direction away from the sealed container 10 and has the first convex bent portion 76g. It has a support member 74f and a fourth support member 74g extending in a direction away from the sealed container 10 and having a second convex bent portion 76h. The first convex bent portion 76g The first convex bent portion 76g and the second convex bent portion 76h constrain a suction muffler 60, which is an example of a gas-liquid separator, facing the second convex bent portion 76h. Can be configured to According to the above-described configuration, the protrusion 76 can be configured only by the bending work of the third support member 74f and the fourth support member 74g. For example, press working for providing the protrusion 76 is performed. Thus, the hermetic compressor 100 can be manufactured at a low cost.

Other embodiments.
The above-described embodiment can be applied to a refrigeration cycle apparatus such as an air conditioner for home use or business use.

  DESCRIPTION OF SYMBOLS 1 Main body part, 3 cover parts, 5 units, 7 discharge pipe, 9 glass terminal, 10 airtight container, 20 motor part, 22 stator, 24 rotor, 26 conducting wire, 30 crankshaft, 32 eccentric part, 34 rolling piston, 40 compression mechanism part, 41 cylinder, 41a hollow part, 41b vane groove, 42 vane, 43 main bearing, 43a fixed part, 43b bearing part, 44 secondary bearing, 44a fixed part, 44b bearing part, 50 refrigerating machine oil, 60 suction muffler , 62 housing, 64 inflow pipe, 66 suction pipe, 68 suction port, 70 gas-liquid separator fixture, 72 fixing part, 72a fixing surface, 72b first terminal part, 72c second terminal part, 74 support part 74a first support member, 74b second support member, 74c first inner surface, 74d second inner surface, 74e support surface, 74f 3rd support member, 74g 4th support member, 76 projection part, 76a 1st projection part, 76b 2nd projection part, 76c 3rd projection part, 76d 4th projection part, 76e 5th projection Part, 76f sixth protrusion, 76g first convex bent part, 76h second convex bent part, 78 connecting part, 79 pressure cylinder, 80 electrode, 80a first electrode, 80b second electrode 80c 3rd electrode, 80d 4th electrode, 80e 5th electrode, 80f 6th electrode, 80g 7th electrode, 82 welding power source, 84 welding transformer, 90 support base, 90a recess, 100 sealed type Compressor, 200 manufacturing equipment.

Claims (7)

A gas-liquid separator fixture for fixing the gas-liquid separator to the sealed container of the hermetic compressor,
A fixing portion fixed to the sealed container;
A support portion extending from the fixed portion and supporting the gas-liquid separator;
A gas-liquid separator fixture comprising a plurality of protrusions disposed on the support portion and restraining the gas-liquid separator. The support part is
A first support member extending in a direction away from the sealed container;
A second support member extending in parallel with a distance from the first support member in a direction away from the sealed container;
2. The gas-liquid separator fixture according to claim 1, wherein two of the plurality of protrusions are disposed on each of the first support member and the second support member. The support part has a support surface along the outer surface of the gas-liquid separator,
The gas-liquid separator fixture according to claim 1, wherein two of the plurality of protrusions are arranged on the support surface. The support part is
A third support member extending in a direction away from the sealed container and having a first convex bent portion;
A fourth support member extending in a direction away from the sealed container and having a second convex bent portion;
The first convex bent portion faces the second convex bent portion,
The gas-liquid separator fixture according to claim 1, wherein the first convex bent portion and the second convex bent portion restrain the gas-liquid separator as the protrusion.   A hermetic compressor comprising the gas-liquid separator fixture according to any one of claims 1 to 4. An application of restraining the gas-liquid separator disposed in the gas-liquid separator fixture according to any one of claims 1 to 4 by applying pressure to the protrusion of the gas-liquid separator fixture. A pressure cylinder;
An apparatus for manufacturing a hermetic compressor, comprising: a plurality of electrodes that cause current to flow through the protrusions to melt the protrusions and fix the gas-liquid separator to the gas-liquid separator fixture. Arranging the gas-liquid separator in the gas-liquid separator fixture according to any one of claims 1 to 4,
Applying pressure to the protrusions to restrain the gas-liquid separator with the protrusions;
A method of manufacturing a hermetic compressor, comprising: passing an electric current through the protrusion to melt the protrusion, and fixing the gas-liquid separator to the gas-liquid separator fixture.

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