JP2007303379A - Compressor, rotary electric machine, and method for manufacturing compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reliable, efficient and high performance compressor or rotary electric machine not causing increase of noise and vibration due to rattle of a compression mechanism part even after use of a long period of time. <P>SOLUTION: The compressor is provided with built-in parts 101 stored in a vessel 1 and covering a surrounding of a compression chamber and forming a compression means performing compression, an outer circumference surface of the built-in parts in an outer diameter side of the built-in parts, having a predetermined width and opposing to the vessel with keeping a gap, a fixed part including a plurality of prepared holes 102 provided on the outer circumference surface and arranged closely each other, and a vessel projection part 107 of a vessel wall part corresponding to the fixed part, pressed from an outside of the vessel and entering the plurality of prepared holes to fix the vessel and the built-in parts. An inner diameter of the built-in parts is set smaller than a predetermined value to inhibit deformation when the built-in parts are fixed on the vessel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a compressor, a rotating electrical machine, and a method for manufacturing a compressor that can be preferably used for a refrigeration apparatus, an air conditioner, a hot water supply apparatus, and the like.

  As a conventional compressor, there is a method in which a container is drilled, the compression mechanism portion is shrink-fitted into the container, molten metal is poured from the outside of the hole portion, and internal parts such as the compression mechanism portion are welded and fixed to the container (for example, Patent Document 1).

  As a method of fixing the compression mechanism part of the compressor without drilling the container, after pressing and positioning the compression mechanism part into the container, the container facing the pilot hole provided on the outer peripheral surface of the compression mechanism part is pressed. In this case, the container is pressed inward in the radial direction, the container is plastically deformed inside the pilot hole, and the compression mechanism is fixed in the container (for example, see Patent Document 2).

  Further, there is a mechanism in which a pilot hole is provided on the outer peripheral surface of the compression mechanism portion, and the compression mechanism portion is fixed to the sealed container by heating caulking from the outer periphery of the container at the same position as the pilot hole (for example, see Patent Document 3).

  Also, a plurality of pilot holes close to the outer peripheral surface of the compression mechanism section are provided, the container facing these pilot holes is pressed inward in the radial direction by a pressing jig, and a convex portion that engages the pilot hole is formed in the container. In some cases, a plurality of convex portions of the container fasten between the pilot holes of the compression mechanism portion by heat shrinkage due to cooling of the container to fix the compression mechanism portion to the container (for example, see Patent Document 4).

Japanese Patent Laid-Open No. 06-272677 (second page, FIG. 1) JP-T 6-509408 (1st page, FIG. 1) Japanese Utility Model Publication No. 1-1131880 (first page, FIG. 1) Japanese Patent Laying-Open No. 2005-330827 (first page, FIG. 1)

  The prior art as described above has the following problems. When a container is drilled, foreign matter such as welding spatter enters from the hole during welding, and the foreign matter enters the compression mechanism to cause compression failure, or refrigerant leaks from the container hole due to poor welding. There was a problem of doing. In addition, when the molten metal is poured into the hole of the container, the molten metal injected between the built-in components such as the compression mechanism and the container is solidified while the container is heated and the container expands radially outward due to the heat. Therefore, after the molten metal solidifies, the cooling shrinkage of the container occurs, whereby the solidified molten metal receives a force inward from the container, and presses the compression mechanism portion in the radial direction to compress the compression mechanism. There is a problem that the distortion generated in the portion increases. Further, when the strain increases, there is a problem that the performance and efficiency of the compressor deteriorate, such as a gap in a portion that seals the high pressure and the low pressure in the compression chamber of the compression mechanism portion increases, and the refrigerant leaks.

  If the container is not drilled, the compression mechanism is pressed into the container, which increases the tightening force of the compression mechanism and causes distortion in the compression mechanism. When the container facing the hole is pressed from outside without being heated and caulked, a force is applied to the compression mechanism part, and there is a problem that the generation of distortion of the compression mechanism part increases. Heat caulking at one pilot hole can reduce the pressing force from the outside of the container during caulking, but the shrinkage of the caulking part after the container cools causes rattling of the compression mechanism against the container. However, even if a plurality of adjacent caulking portions are formed by heating caulking and tightened and fixed by heat shrinkage due to cooling of the container, the container is not sufficiently tightened and the compressor has been used for a long time. On the other hand, there has been a problem in that long-term reliability is lacking, such as displacement and rattling in the compression mechanism, and problems such as increased noise and vibration. Further, in the case of fixing the rotating electrical machine to the container, the conventional fixing method such as shrink fitting has a problem that the rotating electrical machine is distorted and the performance and efficiency of the rotating electrical machine are deteriorated.

  This invention has been made to solve the above-described problems of the prior art, and there is no possibility of foreign matter such as welding spatter mixing or leakage of refrigerant, and when the compression mechanism is fixed to the container. Reducing the force received by the compression mechanism, reducing the distortion of the compression mechanism, and ensuring long-term use does not cause problems such as increased noise and vibration due to rattling of the compression mechanism A highly efficient, efficient and high performance compressor and rotating electrical machine are obtained.

  The compressor according to the present invention includes a built-in component that is housed in a container and that forms compression means that covers the periphery of the compression chamber and performs compression, and has a predetermined width on the outer diameter side of the built-in component and has a gap in the container. A fixed portion having a plurality of prepared holes provided on the outer peripheral surface and arranged close to each other, and a container wall portion corresponding to the fixed portion and outside the container And a container convex portion for fixing the container and the built-in component into the plurality of pilot holes, the inner diameter of the built-in component being reduced so as to suppress deformation when the built-in component is fixed to the container. It is made smaller than a predetermined value.

  The compressor according to the present invention includes a built-in component that is housed in a container and that forms compression means that covers and compresses the periphery of the compression chamber, and has a predetermined width on the outer diameter side of the built-in component. An outer peripheral surface of a built-in component facing through a gap, a fixed portion provided on the outer peripheral surface and having a plurality of pilot holes arranged close to each other, and a container wall portion corresponding to the fixed portion, the container A container convex portion that is pressed from the outside into the plurality of pilot holes and fixes the container and the built-in component, and the outer periphery of the built-in component so as to suppress deformation when the built-in component is fixed to the container The width of the surface is made larger than a predetermined value.

  Further, the compressor according to the present invention has a second built-in component that rotatably supports the compression means that is housed in the container and compresses, and has a predetermined width on the outer diameter side of the second built-in component. And an outer peripheral surface of the second built-in component facing the container through a gap, a fixing portion provided on the outer peripheral surface and having a plurality of pilot holes arranged close to each other, and a container corresponding to the fixing portion A container convex portion that is a wall portion and is pressed from the outside of the container to enter into the plurality of pilot holes and fixes the container and the second built-in component, and the second built-in component is attached to the container The width of the outer peripheral surface of the second built-in component is made larger than a predetermined value so as to suppress deformation at the time of fixing.

  Further, the rotating electrical machine according to the present invention includes a stator made of laminated electromagnetic steel sheets that are accommodated in a container with a gap and are arranged to face the rotor, and the container is opposed to the container on the outer diameter side of the stator. An outer peripheral surface of the stator, a fixed portion provided on the outer peripheral surface and having a plurality of prepared holes arranged close to each other, a container wall corresponding to the fixed portion, and pressed from the outside of the container The container includes a container convex portion that enters the plurality of pilot holes and fixes the container and the stator, and the pilot hole is provided across a plurality of laminated electromagnetic steel sheets.

  The compressor manufacturing method according to the present invention is a built-in component that forms a compression unit that is housed in a container and performs compression or a built-in component that supports the compression unit, and has an outer peripheral surface having a width greater than a predetermined value. Storing a built-in component provided with a plurality of pilot holes arranged close to each other in a container provided through a gap, and suppressing a heating range at a position opposite to the plurality of pilot holes; Heating from the outside in a temperature range above the softening temperature of the container material and below the melting point, and pressing the container wall part with a pressing jig having an inner diameter of the pilot hole or less to allow the container wall part to enter the pilot hole And a step of sandwiching the built-in component with a plurality of prepared hole groups arranged in the circumferential direction of the container wall portion that has been inserted, and fixing to the container.

  The compressor according to the present invention includes a built-in component that is housed in a container and that forms compression means that covers the periphery of the compression chamber and performs compression, and has a predetermined width on the outer diameter side of the built-in component and has a gap in the container A fixed part having a plurality of pilot holes provided on the outer peripheral surface and arranged close to each other, and a container wall corresponding to the fixed part and outside the container And a container convex portion for fixing the container and the built-in component into the plurality of pilot holes, the inner diameter of the built-in component being reduced so as to suppress deformation when the built-in component is fixed to the container. Since it is smaller than the predetermined value, there is an effect that an efficient compressor can be obtained.

  The compressor according to the present invention includes a built-in component that is housed in a container and forms compression means that covers the periphery of the compression chamber and performs compression, and has a predetermined width on the outer diameter side of the built-in component. An outer peripheral surface of a built-in component facing through a gap, a fixing portion provided on the outer peripheral surface and having a plurality of pilot holes arranged close to each other, and a container wall corresponding to the fixing portion, the container A container convex portion that is pressed from the outside into the plurality of pilot holes and fixes the container and the built-in component, and an outer periphery of the built-in component so as to suppress deformation when the built-in component is fixed to the container Since the width of the surface is larger than a predetermined value, there is an effect that an efficient compressor can be obtained.

  Further, the compressor according to the present invention has a second built-in component that rotatably supports the compression means that is housed in the container and compresses, and has a predetermined width on the outer diameter side of the second built-in component. And an outer peripheral surface of the second built-in component facing the container through a gap, a fixing portion provided on the outer peripheral surface and having a plurality of pilot holes arranged close to each other, and a container corresponding to the fixing portion And a container convex part that is pressed from the outside of the container and enters into the plurality of pilot holes to fix the container and the second built-in part, and the second built-in part is attached to the container. Since the width of the outer peripheral surface of the second built-in component is made larger than a predetermined value so as to suppress deformation at the time of fixing, there is an effect that an efficient compressor can be obtained.

  Further, the rotating electrical machine according to the present invention includes a stator made of laminated electromagnetic steel sheets that are accommodated in a container with a gap and are arranged to face the rotor, and the container is opposed to the container on the outer diameter side of the stator. An outer peripheral surface of the stator, a fixed portion provided on the outer peripheral surface and having a plurality of prepared holes arranged close to each other, a container wall corresponding to the fixed portion, and pressed from the outside of the container A container convex part for entering the plurality of pilot holes and fixing the container and the stator, and the pilot hole is provided across a plurality of laminated electromagnetic steel sheets, so that an efficient rotating electrical machine is obtained. There is an effect.

  The compressor manufacturing method according to the present invention is a built-in component that forms a compression unit that is housed in a container and performs compression or a built-in component that supports the compression unit, and has an outer peripheral surface having a width greater than a predetermined value. Storing a built-in component provided with a plurality of pilot holes arranged close to each other in a container provided through a gap, and suppressing a heating range at a position opposite to the plurality of pilot holes; Heating from the outside at a temperature range above the softening temperature of the container material and below the melting point, and pressing the container wall portion with a pressing jig having an inner diameter of the pilot hole or less to bite the container wall portion into the pilot hole And a step of sandwiching the built-in parts with a plurality of prepared hole groups arranged in the circumferential direction of the encased container wall and fixing it to the container, so that an efficient compressor can be manufactured. effect A.

Embodiment 1 FIG.
1 is a longitudinal sectional view schematically showing a hermetic compressor according to Embodiment 1 of the present invention.
2 to 5 are cross-sectional views of relevant parts for explaining the structure and forming method of the caulking portion shown in FIG. FIG. 6 is a view of the caulking portion shown in FIG. 5 as viewed from the outside of the sealed container. FIG. 7 is a cross-sectional view of an essential part for explaining the structure of the caulking portion shown in FIG. In FIG. 1, reference numeral 1 denotes a sealed container which is a container, and 101 is a compression mechanism part which is a kind of a built-in component incorporated in the sealed container 1, and forms compression means which is stored in the container 1 and covers the periphery of the compression chamber to perform compression. To do. Reference numeral 103 denotes a suction pipe for supplying a gas to be compressed to the compression mechanism section, 2 denotes a stator of an electric motor that supplies driving force to the compression mechanism section 101, and 3 denotes a rotor of an electric motor that is a rotating electrical machine. The stator 2 is fixed to the sealed container 1 by shrink fitting.

  Here, a method for fixing the compression mechanism 101 to the sealed container 1 will be described. The outer side of the compression mechanism 101 has a predetermined width in the axial direction of the compressor, and the outer peripheral surface of the compression mechanism 101 faces the sealed container 1 with a gap. That is, the compression mechanism unit 101 is in a state of being fitted to the sealed container 1 with a gap. Here, the clearance fitting means that the outer diameter of the compression mechanism portion 101 is smaller than the inner diameter of the sealed container 1 and a load is applied to the compression mechanism portion 101 from the sealed container 1 when placed even if the roundness of each other is taken into consideration. It means not fitting. In this case, the outer diameter and the inner diameter often mean the average values of the outer diameter and the inner diameter measured at two places orthogonal to each other or three or more places added to these two places. A pilot hole 102 is formed on the outer peripheral surface of the compression mechanism 101. FIG. 1 is a longitudinal sectional view, and only one pilot hole 102 is drawn. However, as shown in FIG. 2, the pilot hole 102 is in the state of being adjacent to the compression mechanism 101 in the circumferential direction. A set of points is provided, and here, a partial region of the outer peripheral surface of the compression mechanism portion 101 that combines a plurality of prepared holes 102 and a portion sandwiched by the prepared holes 102 is called a fixed portion. And The fixing portions are provided at three locations on the outer peripheral surface of the compression mechanism portion 101 at substantially equal pitch intervals. In this case, the number of the pilot holes 102 is six in total.

  Next, as shown in FIG. 2, the outer peripheral surface of the sealed container 1 on the center position between the two pilot holes 102 of each fixing portion is used as the heating center 109, and the sealed container 1 is locally applied from the outside of the sealed container 1. Heat to. After thermally expanding the sealed container 1 by heating, as shown in FIG. 3, the tip is flat with a cylindrical shape having an outer diameter equal to or slightly smaller than the inner diameter of the lower hole 102 from directly above the two lower holes 102. Two pressing jigs 111 are pressed at the same time from the outside of the sealed container 1, and as shown in FIG. 4, convex portions 107, which are two container convex portions that enter the pilot holes 102, are formed inside the sealed container 1. A caulking portion is formed. This is performed almost simultaneously at three locations on the outer peripheral surface of the compression mechanism 101.

  Then, as shown in FIG. 5, when the sealed container 1 that has been thermally expanded after the formation of the protrusions 107 is cooled, the two protrusions 107 are attracted toward the heating center 109 due to thermal contraction. In this embodiment, the compression mechanism unit 101 is provided with two sets of adjacent pilot holes 102 arranged side by side in the circumferential direction of the outer peripheral surface of the compression mechanism unit 101. Therefore, the compression mechanism unit 101 is tightened in the circumferential direction. 101 is fixed to the sealed container 1. Unlike the conventional fixing method by welding or press fitting, the compression mechanism portion is not fixed to the sealed container by a radial force, but is pressed and fixed by a circumferential force. Since the distortion is small and the sealed container 1 is not drilled, there is no possibility of foreign matters such as spatters or refrigerant leakage.

  In FIG. 4, 106 is a concave portion of the sealed container 1 that forms the convex portion 107, and the inner diameter thereof is equal to the outer diameter of the pressing jig 111. FIG. 6 is an arrow view seen from the direction A shown in FIG. 5 and is a view of the sealed container 1 seen from the outside. On the outer peripheral surface of the sealed container 1, two adjacent concave portions 106 that are caulking portions are formed, and these are provided at three locations on the entire periphery. In FIG. 6, a dotted circle indicated by 108 represents a heating range, and is a range in which heat by local heating has an influence. Further, the heating center 109 is represented by an imaginary line by a one-dot chain line.

  The material of the sealed container 1 is generally iron. The yield point of iron suddenly decreases from around 600 ° C. The temperature at which the yield point starts to drop rapidly in this way is referred to as the softening temperature. That is, the temperature at which iron softens is 600 ° C. In order to reduce the rigidity of the sealed container 1 and reduce the pushing force for forming the convex portion 107 by pressing the pressing jig 111, and further lower the yield point of the material of the sealed container 1 to efficiently form the predetermined shape. In order to cause deformation, the temperature during heating is preferably higher than the temperature at which the material softens and lower than the melting point. By reducing the yield point by heating, the spring back in the radial direction of the hermetic container 1 after the hermetic container 1 is plastically deformed (in this case, the convex part 107 is formed) (return of the convex part 107 in this case) is performed. The predetermined push-in amount can be ensured efficiently and reliably. Here, the push-in amount is the depth of the convex portion 107 entering the pilot hole 102, and is a dimension indicated by H in FIG. As described above, the material of the sealed container 1 is iron, and the softening temperature is 600 ° C. The melting point of iron is about 1560 ° C. Therefore, the heating temperature for local heating is preferably 600 ° C. or higher and 1500 ° C. or lower. Of course, if the material is other than iron, the heating temperature changes, and the temperature is above the softening temperature of the material and below the melting point.

  Since the heating range 108 includes all of the concave portions 106 that serve as pressing portions of the pressing jig 111, it is possible to reliably form the convex portions 107 by using the characteristics of the material of the sealed container 1 at a high temperature as described above. The pushing force for forming the convex portion 107 is reduced, and distortion generated in the compression mechanism portion 101 during assembly can be reduced. Further, by setting the heating center 109 of the sealed container 1 above the center of the two pilot holes 102, the convex part 107 is reliably formed on the sealed container 1, and then the convex part 107 is heated toward the heating center by cooling. Since it shrinks, the space between the pilot holes 102 arranged close to the compression mechanism 101 can be firmly sandwiched between the two closed container convex portions 107.

  In this way, the convex portion 107 of the sealed container 1 is reliably formed and fixed between the pilot holes 102 of the compression mechanism portion 101 by firmly sandwiching the convex portion 107 of the sealed container 1. Even if it is a clearance fit with the hermetic container 1, it can withstand normal and excessive force generated during the operation of the compressor for a long-term use of the compressor, and does not generate rattling. The compression mechanism 101 can be fixed to the closed container 1. In addition, since the gap is fitted, it is possible to eliminate the pressing force in the radial direction by the hermetic container 1 on the compression mechanism 101 that has been applied in the conventional welding or press fitting after the fixing is completed. Distortion can be reduced and compressor performance can be improved.

  With respect to the axial direction of the compressor, the compression mechanism 101 is supported not only by the support of the closed container convex 107 by being sandwiched but also by the rigidity of the closed container convex 107 itself. Therefore, the inner diameter dimension φD1 of the pilot hole 102 of the compression mechanism 101 shown in FIG. 7 is selected so as to satisfy the specification of the pull-out strength against the transportation and dropping of the compressor in which the axial acceleration occurs. Here, the caulking point of each pilot hole 102 and one convex portion is called a caulking point. A caulking portion is formed by two caulking points that are sandwiched in close proximity.

For example, assuming that the required pull-out strength is 1500 kgf, when the caulking points by the two adjacent pilot holes 102 and the convex portions 107 are provided in a total of six points in the circumferential direction as in the above embodiment, if the breaking strength of the closed container 1 and 24kgf / mm ^2, the φ3mm the prepared hole 102 diameter .phi.D1, the pull-out strength ^{is, π × 3 2/4 ×} 24 * 6 points = 1018Kgf next, the pull-out strength required specifications I'm not satisfied. If this with ^{φD1 = φ4mm, π × 4 2} /4 × 24 * 6 points = 1810Kgf next, so the pull-out strength specifications fully satisfactory. Thus, the diameter φD1 of the pilot hole 102 that satisfies the pull-out strength specification is set according to the number of caulking points.

  Up to now, the case where the two pilot holes 102 that are close as the fixing portion of the caulking portion are arranged in the circumferential direction of the outer peripheral surface of the compression mechanism 101 has been described, but the arrangement direction is limited to the circumferential direction only. The pinching force between the pilot holes 102 can be generated even in the axial direction of the compression mechanism 101 that is orthogonal to the compression mechanism 101 or in any direction different from them. The compression mechanism 101 can be firmly fixed without increasing the distortion. However, as described above, the strength against slipping increases as the number of convex portions 107 receiving a load in the axial direction increases, so it is preferable that the two pilot holes 102 are arranged in the circumferential direction. More specifically, in the case where a total of 6 caulking points are provided in the entire circumference of the caulking portions of the two caulking points provided close to each other in the circumferential direction, the axial direction generated in transportation or the like The force will be supported at 6 points, but if the caulking part of the 2 caulking points is provided in 3 places on the entire circumference in the axial direction, the force in the axial direction will be substantially In this case, it is in a state of supporting at three points, and for that purpose, the diameter φD1 of the pilot hole 102 must be made larger than when arranged in the circumferential direction to satisfy the pull-out strength specification.

  Further, the number of pilot holes 102 that are close as fixing portions on the outer peripheral surface of the compression mechanism portion is not limited to two points. If there are a plurality of pilot holes 102 at two or more points that are caulking points, they can be sandwiched between the pilot holes 102. Even if the number is any number, if the airtight container 1 on the center between the plurality of prepared holes is used as the heating center, the plurality of formed convex portions 107 are cooled and contracted toward the heating center. All of the projected portions 107 can be inserted between the pilot holes 102. When the compressor is viewed from the outside in the radial direction of the hermetic container 1 and the number of caulking points is three, the arrangement example in FIG. 8 in which the number of caulking points adjacent to each other is three is described from the outer side of the hermetic container. As shown in the figure, the caulking points indicated by the recesses 106 are arranged in a triangle, and the heating range 108 may be formed so that the center is the heating center and the entire three points are included. Further, when the number of caulking points of the caulking portion is 4, the caulking indicated by the concave portion 106 is illustrated as seen from the outside of the sealed container for explaining an arrangement example in which the number of caulking points adjacent to each other is 4 in FIG. What is necessary is just to arrange | position a point in a rectangle. The direction of the plurality of arrangements may be any direction as in the case of the two points described above, but there are many convex portions 107 that receive a load in the axial direction in terms of the dropout strength. Such an arrangement is preferred. For example, when the number of caulking points is three, it is better to arrange two points vertically below (or above) as shown in FIG. 8, and when four points are used, the points are arranged in a diamond shape as shown in FIG. However, the number of supporting points (convex portions) with respect to the axial force can be increased as compared to the arrangement of FIG.

  In order to satisfy the required missing strength specification, the number of caulking points in a set close to each other may be increased, or the number of caulking portions provided on the entire circumference may be increased. In the above-described embodiment, a total of six caulking points are provided on the entire circumference of the caulking portion by two caulking points. However, if the compressor is larger, as shown in FIG. The caulking portions of the three caulking points in the triangular arrangement may be provided with a total of 12 caulking points, for example, at four locations on the entire circumference.

  In order not to cause unnecessary thermal distortion in the sealed container 1 and to improve the tact time of the assembling apparatus, the local heating before caulking is preferably performed in a short time, and the heating source can be used in a short time. What can raise the temperature of this to the required temperature is good. As a heat source, arc welding with a TIG welder or the like, thermal power with a burner, laser, high-frequency heating, or the like can be used. An arc welder such as a TIG welder has the advantage that the equipment cost is low and the hermetic container 1 can be locally heated by an arc. However, when the heating center becomes too high, the sealed container 1 is in a semi-molten state, and when the semi-molten portion is pressed by the pressing jig 111, blow holes are likely to occur. Although the high-frequency heater has high equipment costs, it has good heating stability and controllability, and can be stably and locally heated in a short time by adjusting the coil shape and power supply capacity. It can be said that it is extremely suitable as a heating source. The heating power of a burner or the like is inexpensive, but local heating is difficult, so a wide range is heated when the heating range 108 is wide, such as when the diameter φD1 of the pilot holes 102 is large or the gap between the pilot holes 102 is wide. It is effective to use sometimes.

  In the present embodiment, the compression mechanism 101 is fitted into the closed container 1 with a gap, and a gap is provided between the closed container 1 and the compression mechanism 101 in the radial direction. The structure is difficult to transmit heat. However, if the heating time is long, heat may be conducted to the compression mechanism 101 that is a built-in component when the sealed container 1 is heated, and when the heat of the compression mechanism 101 is high due to conduction, the sealed container after the convex portion 107 is formed. 1 heat-shrinks due to cooling, and even the compression mechanism portion 101 heat-shrinks due to cooling, so that the pinching force of the airtight container convex portion 107 is reduced and rattling may occur. Therefore, heating needs to be performed in a short time. What is necessary is just to determine the power supply capacity | capacitance of a high frequency heater so that it may raise to predetermined temperature in a short time. For example, when the plate thickness of the sealed container 1 is 2 mm, the heating temperature is 800 to 1100 ° C., the heating range 108 is φ12 mm, the tact time for completing the caulking of this embodiment is 12 seconds, and the heating process is given only 3 seconds By setting the power source capacity to about 10 kW per caulking portion, the above-mentioned time tact can be satisfied, and fixing can be performed without causing a decrease in the pinching force due to the transfer of heat to the compression mechanism portion 101. For example, when the plate thickness of the sealed container 1 is 2 mm to 4 mm, the heating time is 3 to 4 seconds when it is desired to be 800 to 1100 ° C., and when the higher temperature is 1100 ° C. to 1500 ° C., it is 1 to 2 seconds. When the temperature can only be set to 600 ° C. to 800 ° C. due to the relationship or the like, 5 to 6 seconds is appropriate, and it is possible to achieve the reliable formation of the convex portion 107 and the fixing with sufficient and stable pinching force.

  As shown in FIG. 7, when the inner diameter of the recess 106 is φD, this φD is equal to the outer diameter of the pressing jig 111. The inner diameter of the recess 106 (= outer diameter of the pressing jig 111) φD is equal to or smaller than the diameter 102D of the lower hole 102 so that the hermetic container 1 is pushed out into the lower hole 102 at the time of pressing and sealed with a small pressing force. The convex part 107 can be formed by plastically deforming the container 1. If the outer diameter φD of the pressing jig 111 is larger than the diameter 102 of the lower hole 102, the pressing jig 111 also presses the outer peripheral surface of the compression mechanism 101 around the lower hole 102 during pressing. The pressing force required to plastically deform 1 to form the convex portion 107 increases. As a result, the compression mechanism 101 is distorted and the performance of the compressor is degraded.

  On the other hand, if φD, which is the outer diameter of the pressing jig 111, is too smaller than the diameter 102D of the pilot hole 102, the correctly shaped sealed container convex portion 107 cannot be formed. Whereas the supporting point for the pressing force of the compression mechanism 101 is the opening edge (φD1) of the pilot hole 102, if φD is too small, the outer peripheral side becomes a convex shape having a nearly spherical shape. The number of contact points between the container convex portion 107 and the inner periphery of the compression mechanism portion pilot hole 102 is reduced. As a result, sufficient pinching force cannot be obtained, and rattling of the compression mechanism 101 with respect to the sealed container 1 occurs during long-term use. Attempting noise / vibration tests for several compressors with fixed φD1 and varying φD, and arranging the results, when φD / φD1 is 0.5 or less, it is considered to be the effect of rattling. The problem becomes more prominent. Therefore, the dimension of the prepared hole 102 diameter φD1 and the pressing jig 111 outer diameter (recess 106 inner diameter) φD needs to satisfy the relationship of 1 ≧ D / D1> 0.5. By satisfying this relationship, the convex portion 107 of the sealed container 1 is reliably formed, and withstands normal and excessive force generated during the operation of the compressor and rattling against long-term use of the compressor. The firm compression mechanism 101 is fixed to the closed container 1 without any occurrence.

  FIG. 10 is a simplified diagram showing a caulking punch for forming the convex portion 107 in the sealed container. 11 is a cross-sectional view of the main part corresponding to FIG. 7 for explaining the caulking portion shown in FIG. FIG. 12 is a simplified layout view showing an apparatus for forming a caulking portion. FIG. 13 is a cross-sectional view of a cylinder portion for explaining phases of a plurality of caulking portions. FIG. 14 is a graph showing the change in the cylinder vane groove due to the change in the phase of the caulking portion. FIG. 15 is a cross-sectional view for explaining the pilot hole processing based on the suction hole of the cylinder. In the drawing, the pressing jig 111 has a flat tip, and the sealed container 1 is sandwiched between the corner of the tip and the outer edge corner of the pilot hole 102 of the compression mechanism 101, and the sealed container 1 is plastically deformed. Therefore, the convex portion 107 can be formed with a small pressing force, and therefore, the occurrence of distortion in the compression mechanism portion 101 can be reduced.

  Since the pressing needs to be performed simultaneously on a plurality of caulking portions by a set of caulking points of the pilot hole 102 and the convex portion 107, a plurality of pressing jigs 111 fixed to the same base portion are used. It is preferable. For example, in the case where two adjacent caulking points are simultaneously performed, two caulking points are formed simultaneously by one pressing by fixing two pressing jigs 111 to one base 110 as shown in FIG. can do. Further, if the number of prepared holes 102 is three, fixing the three pressing jigs 111 to one base 110 makes it possible to simultaneously form three caulking points with one pressing. The whole of the base 110 provided with the pressing jig 111 is called a caulking punch. Furthermore, the caulking punch can be fixed to the base 110 with a bolt or the like, and can be attached and detached so that only the jig 111 can be replaced, thereby reducing the maintenance cost of the caulking punch.

  By using a heat-resistant material such as hot forging tool steel, cold forging tool steel, or ceramics as the material of the pressing jig 111, it is possible to suppress wear deterioration of the tip corner portion of the pressing jig 111 and the like. The maintainability can be improved.

  In the present invention, due to the thermal contraction of the sealed container 1, a pinching force is generated between the convex portions 107 between the plurality of prepared holes 102 adjacent to the fixing portion, and the compression mechanism portion 101 which is a built-in component is fixed. By adjusting the interval between the pilot holes 102, the amount of heat shrinkage of the sealed container 1 can be changed, and the pinching force generated between the plurality of pilot holes 102 of the built-in component can be adjusted. When the interval between the plurality of pilot holes 102 in the fixing portion is wide, the amount of heat shrinkage after simultaneous caulking at a plurality of points becomes large, and the pinching force of the closed container convex portion 107 becomes high. The holding force for fixing 101 can be increased. However, since the heating range 108 has to be widened, thermal distortion occurs in the sealed container 1 and the roundness of the inner diameter is deteriorated, and the compression mechanism part 101 is partially pressed other than the caulking part, so that the compression mechanism part 101 is distorted, and the compressor performance is reduced.

  On the other hand, when the interval between the plurality of pilot holes 102 adjacent to the fixed portion is narrow, the heating range 108 can be reduced, and thus the distortion of the compression mechanism 101 due to the thermal distortion of the sealed container 1 can be prevented. The pinching force is reduced. As shown in FIG. 11, the shortest distance between the heating center 109 and the center of the pilot hole 102 is represented by P. As for the allowable upper limit of P, assuming that the inner diameter of the pilot hole 102 is represented by φD1 as described above, the heating range 108 is expanded so that P / D1 exceeds 2 from the measurement result of the inner diameter roundness of the sealed container 1 before and after heating. As a result, the change in roundness increases. Regarding the lower limit of P, in the specifications where the number of caulking points adjacent to each other is set at 3 to 4 equal pitches in the circumferential direction and the number of caulking points in one set is 2 to 4, .6 ≦ P / D1, and no problem of noise and vibration due to rattling occurred. Therefore, the interval between the adjacent pilot holes 102 is preferably set so as to satisfy 0.6 ≦ P / D1 <2. By satisfying this relationship, the long-term use of the compressor can withstand the normal and excessive force generated during the operation of the compressor, and the strong compression mechanism unit 101 that does not generate rattling. It can be fixed to the sealed container 1. Even if the interval between the plurality of pilot holes 102 is constant, the amount of heat shrinkage of the hermetic container 1 is changed by adjusting the power supply capacity for heating, which is the heating capacity, and the plurality of pilot holes 102 of the built-in component. The sandwiching force generated between them can be adjusted.

The pushing amount H, which is the depth at which the airtight container convex portion 107 shown in FIG. 4 enters the pilot hole 102, acts on the inside of the airtight container 1 during the operation of the compressor, and the internal pressure causes the airtight container 1 to have a radius. A minimum amount that prevents the airtight container convex portion 107 from coming out of the pilot hole 102 when spreading outward in the direction is required. For example, when an internal pressure of 42 kgf / cm ² acts on a sealed container having a plate thickness of 2 mm and an inner diameter of 100 mm, the sealed container expands about 20 μm on one side radially outward. Therefore, the pushing amount H must be at least 20 μm. However, if the push-in amount H is too small, the Hertz stress due to the pinching force acting on the convex portion 107 becomes large, so it is better to secure 0.1 mm or more.

  As the push-in amount H is increased, the thickness of the minimum thickness portion of the sealed container 1 is decreased. Here, the thickness of the minimum thickness portion refers to the distance between the outer peripheral root of the convex portion 107 (the inner peripheral surface of the sealed container 1) and the inner peripheral bottom surface base between the concave portions 106 of the closed container 1, and K in FIG. The dimensions shown. The dimension G shown in FIG. 5 is the depth of the recessed part 106 of an airtight container, and the pushing amount H becomes large as the depth of the recessed part 106 increases. The thickness K of the minimum thickness portion is determined by the depth G of the recess 106. In order to secure the pushing amount H, the concave portion 106 is necessarily formed, and the thickness K of the minimum thickness portion is substantially smaller than the plate thickness of the sealed container 1 by the depth G of the concave portion 106. When the depth G of the concave portion 106 is increased in order to increase the pushing amount H, the thickness K of the minimum thickness portion of the hermetic container 1 becomes thin, and when the internal pressure acts on the hermetic compressor, the minimum There is a fear that leakage will occur from the thick part. Therefore, the maximum allowable recess 106 depth G is determined from the pressure resistance required for the sealed container within a range that can satisfy it, but the thickness K of the minimum thickness portion is ½ of the plate thickness of the sealed container 1. If it is more than the above, normally, the pressure-resistant strength of an airtight container can fully be satisfied. For example, if the plate thickness of the sealed container is 2 mm, the depth G of the recess 106 may be set to 1 mm or less. Thus, the depth G of the recess 106 may be set to ½ or less of the plate thickness of the sealed container 1. Therefore, the pushing amount of the convex portion 107 may be set to 1/2 or less of the plate thickness of the sealed container 1.

  However, in a hermetic compressor used in a cycle that uses carbon dioxide as a refrigerant that has recently been found in the market by being used in hot water heaters and the like, carbon dioxide is a very high pressure refrigerant. Some containers have a thick plate thickness of 6 mm or 8 mm. As described above, even in a closed container having a large plate thickness, the depth G of the recess 106 may be allowed to ½ of the plate thickness. However, in order to reduce the depth G of the recess 106 to 3 mm or 4 mm, a considerable amount Since a pressing force is required and there is a concern about the problem of distortion in the compression mechanism due to the pressing, even a hermetic compressor used for an extremely high pressure refrigerant such as carbon dioxide is 1 mm as an actual product. It is enough to secure the amount of pushing in.

  In the present embodiment, the caulking is carried out at the three caulking portions on the outer periphery of the compression mechanism portion 101, but it is desirable that the arrangement at the three locations be an equal pitch of 120 °. FIG. 12 is a schematic view schematically showing an apparatus and a state for forming a caulking portion. A pressing press 112 has a caulking punch at the tip thereof, and a pressing jig 111 is a portion where the sealed container 1 is plastically deformed by direct contact with the sealed container 1. Since the caulking is carried out at three places (two caulking points are formed at one place, the total number of caulking points is six), three pressing press machines 112 are installed. An arrow indicated by 113 represents the pressing force that the pressing jig 111 applies to the sealed container in the pressing press machine 112, and the pressing force 113 acts toward the center of the sealed container 1. The three pressing forces 113 are equal in magnitude.

  Three pressing press machines 112 are arranged at an equal pitch of 120 °, and the three caulking portions are arranged at an equal pitch of 120 ° with respect to the sealed container 1, and if three locations are pressed at the same time, three pressing operations are performed. Since the force 113 can be balanced, the hermetic container 1 does not move or rotate due to a moment even if a separate jig for receiving the pressing force 113 is not provided. Therefore, the apparatus for forming the caulking portion can be simplified. When the four caulking portions are formed on the outer periphery of the compression mechanism portion 101, the pitch may be 90 °. According to the number of caulking part forming places on the entire circumference, the pressing force can be balanced by arranging the pitches between the caulking parts to be equal pitches, and thus the device for forming the caulking part can be simplified. Simplification is possible. Actually, the pitch of each caulking portion may not be strictly equal pitch due to variations in equipment and products, but the design and manufacture is aimed at the same pitch as a basic rule. In addition, an equal pitch is most desirable, but even if there is a slight difference in each pitch, the pressing force is applied on the surface by the plane of the tip of the pressing jig 111, so the sealed container 1 does not move or rotate. If so, there is no problem and the same effect can be obtained.

  In the case where the hermetic compressor is a rotary compressor, a pilot hole 102 is formed on the outer peripheral surface of the cylinder, which is a part forming the outer peripheral wall of the compression chamber, among the plurality of parts forming the compression mechanism, and the cylinder A caulking portion may be formed between the outer periphery of the container and the closed container. FIG. 13 is an explanatory diagram for explaining the phase of the caulking portion with respect to the cylinder. In FIG. 13, 16 is a cylinder which is one of the components constituting the compression means, and includes an inner diameter 16a that forms a compression chamber, a vane groove 16b in which one of the inner diameters 16a is opened, and a plurality of adjacent pilot holes 102. The fixing portion has an outer peripheral surface 16c formed at three locations. Although not shown, a cylindrical rolling piston that is eccentric with respect to the inner diameter 16a rotates within the inner diameter 16a, a plate-shaped vane is fitted in the vane groove 16b, and the tip of the vane is always in contact with the outer peripheral surface of the rolling piston. Thus, a compression chamber is formed. The angle indicated by θ in FIG. 13 is the position of the first caulking portion existing in the vicinity of the vane groove 16b with the center line of the vane groove 16b as the base point when the three caulking portions are arranged at an equal pitch of 120 °. It is an angle indicating the phase of 114a, and in the same figure, the clockwise direction is positive. Therefore, with the center line of the vane groove 16b as the base point, the phase of the second caulking portion position 114b is θ + 120 °, and the phase of the third caulking portion position 114c is θ + 240 °. The first place, the second place, and the third place are described for convenience of explanation, and the three places are pressed almost simultaneously.

  In the present invention, the distortion generated in the compression mechanism unit 101 is reduced as compared with the conventional method such as caulking with welding or press fitting. It ’s difficult. FIG. 14 is a diagram showing the amount of change (strain amount) in the width dimension of the vane groove 16b when the phase θ of the first caulking portion position 114a is changed. This is the amount of distortion with respect to the change in the phase θ at the first location, and the caulking portion is implemented not only at one location but at three locations at equal pitches. The left end is θ = 0 °. At this time, the phase of the first 114a is directly above the vane groove 16b, and the second 114b is clockwise from the vane groove 16b in FIG. The third point 114c has a phase of 120 ° counterclockwise (in the negative direction of θ) in FIG. 13 with the vane groove 16b as a base point. The right end of FIG. 14 is when θ = 120 °. In this case, the phase of the third 114c is directly above the vane groove 16b, which is substantially the same state as when θ = 0 °. .

  As shown in FIG. 14, when the first caulking position 114a is on the center line of the vane groove 16b, that is, when θ = 0 ° (θ = 120 °), the amount of change in the vane groove width is the smallest. I understand. The vane groove width here is an average value of the groove widths of a total of four points on two diagonals, and the amount of change is the groove width after forming the caulking portion from the groove width before forming the caulking portion. Dimensional change to width. When θ = 0 ° (θ = 120 °), the change amount of the vane groove width is the smallest because pressing the portion directly above the vane groove 16b widens the vicinity of the open end of the cylinder inner diameter 16a of the vane groove 16b. This is because the second and third places are caulked so as to constrain the spread, and as a result of caulking at an equal pitch of 120 °, the spread of the vane grooves 16b can be suppressed. As shown in FIG. 14, the effect is remarkably shown at about −25 ° ≦ θ ≦ 25 °. For this reason, in a rotary compressor in which three caulking portions are arranged on the outer peripheral surface 16c of the cylinder 16 at an equal pitch of 120 °, the position of the caulking portion should be within ± 25 ° with respect to the center of the vane groove. For example, the amount of change in the vane groove can be further reduced, and the performance of the rotary compressor can be improved.

  Many rotary compressors have a vane spring to press the vane against the rolling piston as a measure against vane jumping at the start-up. In such a case, a pilot hole cannot be formed on the center line of the vane groove because the hole is provided in the same phase as the vane groove in the cylinder radial direction. For example, in a rotary compressor of a swing vane in which a vane and a rolling piston are integrated, the caulking portion cannot be provided. A caulking portion can be provided.

  In addition, some ordinary rotary compressors do not have a hole for inserting a vane spring in the cylinder. In that case, one caulking portion may be provided on the center line of the vane groove 16b. For example, in a twin rotary compressor in which cylinders are arranged at two locations in the upper and lower directions in the axial direction, if a vane spring is inserted in one of the two, the internal pressure of the sealed container rises due to compression on the side where the vane spring is located, and the vane spring Since the vane of the compression chamber on the non-compression side is also pressed against the rolling piston by the internal pressure, the compression action can be performed in both compression chambers. Even if one vane spring is omitted, it can be established as a compressor. Therefore, one caulking part is provided on the center line of the vane groove so as to fix the cylinder that does not have the vane spring. The other two caulking portions may be provided at a position of ± 120 ° on the cylinder circumference.

  The above has described the case of a rotary compressor in which caulking portions are provided at three positions at an equal pitch of 120 °. However, even in a rotary compressor disposed at four locations at an equal pitch of 90 °, one of the caulking portions is vane. If possible, there is no obstacle such as a hole in the vicinity of the groove center line, and the arrangement on the vane groove center line is effective in suppressing the amount of change in the vane groove.

  The distortion of the cylinder 16 that affects the performance of the rotary compressor includes not only the vane groove 16b but also the distortion of the inner diameter 16a. Since the distortion caused by is larger, the arrangement was determined here focusing on this point.

  FIG. 15 is an explanatory diagram when the prepared hole 102 is processed in the outer peripheral surface 16 c of the cylinder 16. In FIG. 15, reference numeral 115 denotes a suction hole for sucking compressed gas into the compression chamber. A total of 6 pilot holes 102 of two points close to one place are machined in three places at a 120 ° equal pitch on the cylinder outer peripheral surface 16c. In this machining, the phase reference of each pilot hole is used as a suction hole. The same at the center of 115. In the case of caulking the sealed container 1 to the cylinder 16 with the apparatus as shown in FIG. If the phase is determined based on the suction hole 115 that is the same as the machining standard, the phase of the pilot hole 102 and the pressing jig 111 can be adjusted with extremely high accuracy.

  Not only the phase but also the position (height) in the axial direction is processed with the pilot hole 102 as the center of the suction hole 115, and positioning in the axial direction with respect to the pressing press machine 112 when caulking is performed. If the height is positioned with reference to the suction hole 115, which is the same reference as the reference, the height positions of the pilot hole 102 and the pressing jig 111 can be adjusted with extremely high accuracy as in the phase.

  In order to set the processing standard of the lower hole 102 to the suction hole 115, in the processing of the cylinder 16, the processing of the lower hole 102 is performed after the processing of the suction hole 115 while maintaining the holding state of the cylinder 16 when processing the suction hole 115. Then, it is good to process the pilot hole 102 continuously. For example, the suction hole 115 is processed and the pilot hole 102 is processed without releasing the chuck by fixing the chuck 16 so that the inner diameter of the cylinder 16 is stretched toward the outer periphery. Thus, the positional accuracy of the pilot hole 102 with respect to the suction hole 115 can be improved. At that time, although it is difficult to simultaneously process a plurality of adjacent pilot holes 102, each one pilot hole 102 is simultaneously processed for a group of adjacent pilot holes arranged at three or four or more locations on the outer peripheral surface. The processing time can be shortened compared to providing one point at a time.

  Further, the pilot hole 102 is not chamfered at the inner peripheral end of the opening, or is chamfered so as to be able to remove burrs and burrs in the hole processing even if it is applied. Increase the value to prevent rattling. When chamfering is not performed, buffing may be performed around the opening of the prepared hole 102 in order to remove burrs and burrs.

  In this way, by setting the standard for preparing the pilot hole for the built-in part and the positioning standard for forming the caulking portion as the same standard, the positions of the pilot hole 102 and the pressing jig 111 can be adjusted with high accuracy, so a small pressing The caulking portion can be formed by force, the force applied to the built-in component by caulking can be reduced, and the occurrence of distortion to the built-in component can be reduced.

  When manufacturing a rotary compressor by forming a caulking portion on the outer peripheral surface of the cylinder using the present invention, this method is more effective than the conventional method such as caulking with welding or press fitting. Since the amount of strain can be reduced, it is possible to fix the cylinder to the hermetic container 1 without degrading the performance even if the cylinder has the same outer diameter, the inner diameter is increased, and the rigidity of the ring-shaped cylinder is reduced. Therefore, it is possible to increase the compressor capacity (stroke volume) by enlarging the cylinder inner diameter with the same closed container diameter. In other words, the current compressor capacity can be downsized to a compressor having a sealed container having a smaller diameter.

  In the above embodiment, the rotary compressor as the compressor and the cylinder 16 of the compression mechanism 101 as the built-in component have been described. However, the fixing method of the built-in component according to the present invention is practically any type of compressor. Even if it is not a hermetic compressor but a semi-hermetic or open compressor, it is not limited to a compressor, but any machine that needs to fix parts to a container. Even if it is a thing, it can be utilized and there exists the same effect. In particular, in a hermetic compressor, since the compressor mechanism part is distorted by fixing the compression mechanism part to the hermetic container, the distortion can be reduced by using the present invention.

  As a built-in component fixed to the hermetic container 1, if it is a compression mechanism part of a rotary compressor, besides the above-described cylinder 16, one of bearing parts existing above and below the cylinder, or if it is a twin rotary compressor, an axis line It is also possible to form a caulking portion in a structure such as a partition plate that exists between two cylinders arranged in the direction and partitions the two compression chambers, and has the same effect. If it is applied to a cylinder other than a relatively weak cylinder, the distortion of the cylinder can be further reduced, which contributes to further improvement in compressor performance.

  In a scroll compressor, a fixed scroll that forms a compression chamber, a main bearing part (frame) that supports the fixed scroll and the orbiting scroll, and a sub-bearing part (subframe) that is arranged with an electric motor sandwiched between the main bearing parts It is applicable to fixing to the container 1 and the like, and has the same effect. It can also be used to fix an electric motor stator to an airtight container.

  In the above description, the convex portion 107 formed in the sealed container by local heating is caulked in the plurality of adjacent pilot holes 102, and the compression mechanism portion is fixed by the thermal contraction of the sealed container 1 after cooling. An annular groove is formed on the outer peripheral surface of the portion, and an annular convex band formed on the sealed container by local heating is caulked in this annular groove, and the sealed container 1 is sealed by heat shrinkage after cooling. The compression mechanism portion 101 may be fixed by the annular convex band of the container sandwiching the annular groove on the outer peripheral surface of the compression mechanism portion toward the center of the circle. FIG. 16 is a view of the compressor when viewed from the outside in the radial direction of the hermetic container when such an annular caulking portion is formed. As shown in FIG. A band 116 is formed.

  The pressing jig for forming the annular caulking portion may be formed in a cylinder having an inner diameter equal to or slightly larger than the inner diameter of the annular groove and an outer diameter equal to or slightly smaller than the outer diameter of the annular groove. And the tip surface of the cylindrical pressing jig may be a flat surface, but by making it a curved surface shape along the outer peripheral surface of the sealed container or a curved surface shape smaller than the radius of the outer peripheral surface of the sealed container, it is more than that of a flat surface. An annular caulking portion can be efficiently formed with a small pressing force. Note that the groove on the outer peripheral surface of the compression mechanism and the convex band on the inner periphery of the sealed container are not a complete ring of 360 °, but an annular of 180 ° or more that generates a pinching force due to thermal contraction of the sealed container. As long as it is not a ring-shaped groove or a convex part but a polygonal groove or convex part, a pinching force can be generated.

  When the annular caulking portion is formed, if the inner diameter of the annular groove is large, the amount of heat shrinkage after caulking is increased, and the force of inserting the closed container convex band is increased. The holding force for fixing the can be increased. However, since the heating range 108 of the sealed container has to be widened, a thermal distortion occurs in the sealed container, the roundness of the inner diameter is deteriorated, and the compression mechanism part is partially pressed other than the caulking part to compress the compression mechanism. The part is distorted, and the compressor performance is reduced.

  Conversely, when the inner diameter of the annular groove is small, the heating range can be reduced, so that the compression mechanism can be prevented from being distorted due to the thermal distortion of the sealed container, but the force of the closed container convex band is reduced. The average half value of the inner diameter and outer diameter of the annular groove is defined as the center radius R of the annular groove, and the half value obtained by subtracting the inner diameter from the outer diameter of the annular groove is the groove of the annular groove. When the width T is defined, regarding the allowable upper limit of R, when the heating range of the sealed container is expanded so that R / T exceeds 2 from the measurement result of the inner diameter roundness of the sealed container before and after heating, the change in roundness Becomes larger. As for the allowable lower limit of R, in the specification in which caulking parts are arranged at an equal pitch of 3 to 4 in the circumferential direction, from the results of noise / vibration tests, 0.6 ≦ R / T is caused. There was no problem of noise and vibration. Therefore, the center radius and groove width of the annular groove are preferably set so as to satisfy 0.6 ≦ R / T <2. By satisfying this relationship, a strong compression mechanism that can withstand normal and excessive force generated during compressor operation and that does not generate rattling can be used for long-term use of the compressor. Fixation to the container is obtained.

Embodiment 2. FIG.
In the second embodiment, an apparatus for realizing the caulking portion formation by local heating of the hermetic compressor shown in the first embodiment will be described. FIG. 17 is a diagram showing the overall configuration of the heating caulking device 200, FIG. 17 (a) is a plan view seen from above, and FIG. 17 (b) is a sectional view taken along line XX in FIG. 17 (a). It is sectional drawing. FIG. 18 is a process diagram showing an operation flow of the heating caulking device 200. As shown in FIG. 18, as an operation process of this apparatus, a positioning process of a workpiece (compressor to be assembled) with respect to a pallet, a positioning process of a pallet with respect to a heating caulking mechanism, and finally a caulking process for actually forming a caulking portion. It is roughly divided into three. In FIG. 17, 201 is a work positioning mechanism that is responsible for a work positioning process of a work (compressor to be assembled) with respect to the pallet, which is the first process, and 202 is a pallet positioning process with respect to the heating caulking mechanism that is the second process. A pallet lift mechanism that bears the heat and a heat caulking mechanism indicated by 203 is responsible for the heat caulking process that is the final third process.

  FIG. 19 is a cross-sectional view showing a state of a workpiece placed on a pallet according to Embodiment 2 of the present invention. Here, the assembled compressor is called a workpiece. The workpiece is always placed on a pallet called a pallet, and FIG. 19 is a diagram showing the state. In FIG. 19, 204 is a workpiece (compressor in the middle of assembly), and 212 is a pallet. The work 204 is a twin rotary compressor having two compression chambers in the vertical direction. The airtight container 1 is shrink-fitted and fixed to the airtight container 1 by a compression mechanism 210 that is not yet fixed to the airtight container 1 and another device not shown in the process prior to the heat caulking device 200. An electric motor stator 2 is included. A fixing part composed of two pilot holes 102 adjacent to the outer peripheral surface of the upper cylinder 12 forming the outer wall of one compression chamber, which is a component of the compression mechanism 210, as described in the first embodiment. The part is provided at three places at an equal pitch of approximately 120 °, and a total of six caulking points are provided. The upper cylinder 12 is provided with a suction hole 211 penetrating the outer periphery and the inner periphery in the radial direction. Although not shown here, the structure of the upper cylinder 12 is substantially the same as that shown in FIG. 15 of the first embodiment. In the first embodiment, the compression mechanism is indicated by reference numeral 101, but in the example of this embodiment, it is indicated by reference numeral 210.

  In the compressor that is an actual finished product, the compression mechanism section 210 is arranged at the lower part and the electric motor is arranged at the upper part. However, as shown in FIG. The mechanism portion 210 is in an inverted state such that it is above the electric motor stator 2. Therefore, the upper cylinder 12 exists on the lower side in FIG. Up to this step, the electric motor rotor is not fixed to the crankshaft 6 that transmits the driving force generated by the electric motor to the compression mechanism 210.

  In order to adjust the height of the workpiece 204 to a predetermined position, a height adjusting ring 213 is interposed between the pallet 212 and the workpiece. By exchanging the ring 213 for each model with respect to compressors having different heights, the height of the suction hole 211 with respect to the apparatus can always be kept constant, and the apparatus can be shared. A suction pipe 214 is driven into the suction hole 211 from the outside of the sealed container 1. The suction pipe 214 is driven in a process before the heating caulking device 200 and is performed by another device (not shown). In this case as well, the work 204 intervenes the same ring 213 on the same pallet 212. The pallet 212 and the ring 213 used in the heating and caulking device 200 are the same as those used in the driving device for the suction pipe 214, which is the previous process, with the workpiece 204 placed on the conveyor. It is conveyed at 205.

  Therefore, since the process of driving the suction pipe 204 is performed on the same pallet 212 and conveyed as it is, the rough phase of the workpiece 204 with respect to the pallet 212 has already been determined. As described in the first embodiment, the heating caulking can reduce the pressing force by aligning the positions of the pilot hole 102 and the pressing jig 111, so that the position of the pilot hole and the pressing jig can be accurately aligned. is necessary. The work positioning mechanism 201 responsible for the first step performs a more accurate phasing on the pallet 212 for the work 204 roughly phased with respect to the pallet 212, and fixes the work 204 by the collet mechanism 215. Mechanism.

  The collet mechanism 215 fixes the work 204 to the pallet 212 by simultaneously grasping the inner diameter of the motor stator 2 and the outer diameter of the crankshaft 6. The collet mechanism 215 used here is supplied with air (air pressure). If it is done, it will release grasping and will carry out grasping if air is extracted. The motor stator 2 is shrink-fitted and fixed to the inner periphery of the hermetic container 1. When the collet mechanism 215 is operated, the position of the hermetic container 1 with respect to the pallet 212 is substantially fixed by grasping the inner diameter of the motor stator 2. Will be. Note that the height positioning is determined by the ring 213 described above, and therefore adjustment is not necessary only by selecting the ring 213.

  As described in the first embodiment, the position of the pilot hole and the pressing jig can be adjusted with high accuracy by using the same standard as the standard for processing the pilot hole 102 on the outer peripheral surface of the cylinder and the positioning standard when the caulking portion is formed. Therefore, in the upper cylinder 12 as well, the processing standard for the pilot hole (not shown) on the outer peripheral surface is set as the suction hole 211, so that the positioning reference when the caulking portion is formed is also set as the same suction hole 211. Since the suction pipe 214 is already press-fitted into the suction hole 211 in the previous process of the apparatus 200, the suction pipe 214 is used as a positioning reference when the caulking portion is formed in the same meaning as the suction hole 211.

  FIG. 20 shows the configuration of the workpiece positioning mechanism 201. 20A is a plan view seen from above, and FIG. 20B is a cross-sectional view taken along line YY in FIG. 20A. 20C is an arrow view taken along arrows A and B shown in FIG. 20A, and FIG. 20D is an arrow view taken along arrow C shown in FIG. 20B. FIG. 21 is a state diagram showing how the workpiece 204 is actually positioned in FIG. As shown in FIG. 21, the head of the first pin 222 that reciprocates in the axial direction is inserted into the bush 216 formed on the pallet 212 by the first air cylinder 220 and the first guide 221. The first pin 222 is formed by integrating a head portion having a diameter slightly smaller than the inner diameter of the bushing 216 and a cylindrical portion having a diameter larger than the outer diameter of the bushing 216, and an upper end surface of the cylindrical portion serving as the base of the head portion. Comes into contact with the lower surface of the pallet 212, and the pallet 212 on which the workpiece 204 is placed rises to a height away from the conveyor 205. Although only one first pin 222 is depicted in the drawing, there are actually four first pins 222, and four bushes 216 are also provided on the pallet 212 on the square. The reason why the head of the first pin 222 is pointed into the bush 216 is to position the pallet 212 with respect to the workpiece positioning mechanism 201. Note that the number of the first pins 222 is not limited to four, and if there are two, the pallet 212 can be raised.

  As the pallet 212 is raised, the height of the phasing pin 226 and the suction pipe 214 of the workpiece 204 are matched. The rising distance of the pallet 212 is determined by the moving distance of the first air cylinder 220 and the length of the first pin 222, but these are fixed, and as described above, between models with different heights, It corresponds by exchanging the ring 213, and the others are not changed. As a result, it is possible to suppress loss due to setup change due to model change. It should be noted that the air cylinder described here refers to a machine that reciprocates linearly by air pressure, and has nothing to do with a cylinder that is a component part of a compression mechanism portion of a rotary compressor.

  The phasing pin 226 is a cylinder whose tip is tapered in a tapered shape, the tip surface is spherical, and its outer diameter is slightly smaller than the inner diameter of the suction pipe 214. As a subsequent operation, the phasing pin 226 is advanced into the workpiece 204 in the radial direction of the workpiece 204 by the second air cylinder 229 and the second guide 230, thereby being inserted into the suction pipe 214 of the raised workpiece 204. To do. At that time, the phasing pin 226 is not fixed and is movable in the extending direction of the conveyor 205 by the guide 227. The extending direction of the conveyor 205 is the left-right direction of FIG.

  Since the phasing pin 226 is movable in the extending direction of the conveyor 205 and the tip is tapered or spherical as described above, the phasing is determined even if the suction pipe 214 has a large phase shift. The pin 226 moves and can be inserted into the suction pipe 214 gently. Even when the phasing pin 226 comes into contact with the suction pipe 214 at the start of insertion, the phasing pin 226 moves and escapes, so that the suction pipe 214 is not damaged. In order not to damage the suction pipe 214, the phasing pin 226 is movable in the extending direction of the conveyor 205. Note that the movable range of the phase determination pin 226 is restricted by the stopper 231. Since the rough phasing has already been made as described above, a situation in which the phasing pin 226 is completely displaced in the suction pipe 214 and cannot be inserted cannot occur.

  In addition, the phase determining pin 226 is attached so as to be replaceable. If the model has a different inner diameter of the suction pipe, the phase determining pin 226 can be shared by replacing the phase determining pin corresponding to the inner diameter.

  When the phasing pin 226 is inserted into the suction pipe 214, the coupler 223 for supplying air to the collet mechanism 215 is then linearly moved by the third air cylinder 224 and the third guide 225 shown in FIG. Then, the coupler 223 is connected to the collet mechanism 215. Then, air is supplied to the collet mechanism 215 to release the collet mechanism 215 from gripping the workpiece 204. When it is conveyed on the conveyor 205 from the previous process (previous apparatus) of the heating and crimping apparatus 200, the air of the collet mechanism 215 is removed so that the work 204 does not move or rotate on the pallet 212, The collet mechanism 215 is in an actuated state, and at this time, air is supplied and released.

  Since the collet mechanism 215 is released, the workpiece 204 can be moved and rotated on the pallet 212. However, the rotation is free but the movement is only the gap between the released collet mechanism 215 and the motor stator 2 or the crankshaft 6. In such a state, subsequently, the fourth air cylinder 228, which is two on both sides of the phasing pin 226 shown in FIG. The base of the pin 226 is sandwiched from both sides, and the phasing pin 226 is moved to a normal position as a reference. At that time, the work 204 rotates as the phasing pin 226 moves, and the phase of the work 204 with respect to the pallet 212 is corrected with reference to the suction pipe 214. When the phase is corrected, the collet mechanism 215 is immediately evacuated, the collet mechanism 215 is operated, and the work 204 is fixed to the pallet 212. Thereafter, the phasing pin 226 is retracted in the radial direction of the workpiece 204, removed from the suction pipe 214, and the pallet 212 is lowered onto the conveyor 205.

  In this way, the workpiece positioning mechanism 201 can achieve the phase determination of the workpiece 204 with respect to the pallet 212 with high accuracy without damaging the suction pipe 214. In the above description, after the phasing pin 226 is inserted into the suction pipe 214, air is supplied to the collet mechanism 215 to release the action of the collet mechanism 215. However, after the collet mechanism 215 is released first, A phase determining pin 226 may be inserted into 214.

  Thereafter, the pallet 212 and the workpiece 204 are conveyed on the conveyor 205 to the pallet lift mechanism 202 that is responsible for the pallet positioning process with respect to the heating caulking machine, which is the second process. At this time, the air of the collet mechanism 215 is removed and the collet mechanism 215 is operated, and the work 204 accurately phased on the pallet 212 is fixed to the pallet 212 and does not move.

  As shown in FIG. 17, the pallet lift mechanism 202 is a mechanism that is arranged below the heating caulking mechanism 203 and raises the pallet 212 and the workpiece 204 to the height of the heating caulking mechanism 203. The pallet 212 is positioned with respect to the pallet 212, that is, the workpiece 204 is positioned with respect to the heating caulking mechanism 203. FIG. 22 shows the configuration of the pallet lift mechanism 202. 22A is a cross-sectional view of the pallet lift mechanism 202, and FIG. 22B is a side view of FIG. 22A. In FIG. 22B, the pallet 212, the workpiece 204, the conveyor 205, and the like are omitted.

In FIG. 22, a second pin 251 inserted into a bush 216 provided on the pallet 212 is erected on a plate 252 positioned below the conveyor 205.
Like the first pin 222 described above, the second pin 251 is formed by integrating a head portion having a diameter slightly smaller than the inner diameter of the bush 216 and a cylindrical portion having a diameter larger than the outer diameter of the bush 216. The pallet 212 on which the workpiece 204 is placed is lifted from the conveyor 205 by the upper end surface of the columnar portion serving as the base of the head contacting the lower surface of the pallet 212. Four second pins 251 are also provided on the square with respect to the pallet 212. The number of the second pins 251 is not limited to four. If there are two, the pallet 212 can be raised, and any number may be used as long as it is two or more.

  Similarly, a positioning shaft 260 wider than the width of the conveyor 205 is erected on the plate 252 so as to surround the pallet 212. The positioning shaft 260 is a cylinder, and a head having a diameter smaller than the diameter of the cylinder is integrated on the tip side, and the head is stepped in a diameter decreasing toward the tip or tapered. It is formed so that the diameter decreases toward the tip in a shape or a spherical shape. Four positioning shafts 260 are provided at a larger interval than the pallet 212 so as to surround the pallet 212.

  When the motor 250 is driven, the ball screw 255 connected to the motor 250 via the coupling 258 rotates. There is the same ball screw 255 across the conveyor 205 on the side opposite to the side where the motor 250 is located. These two ball screws 255 are connected to each other by a belt 257 via a pulley 256 and are synchronized. Rotate. Holes that allow the respective ball screws 255 to pass therethrough are provided on the outside of the plate 252, and a feed bush 262 having a female screw portion that meshes with each ball screw 255 exists at the lower part of the holes. . The rotation of the two ball screws 255 raises the two feed bushes 262 and pushes up the lower surface of the plate 252.

  When the plate 252 rises, the plate 252 is guided by the feed guide 254 and rises along the feed guide 254. At this time, there are four feed guides 254 so as to surround the pallet 212. Four cylindrical portions 261 extend along the guide on the lower surface of the plate 252, and a gap is provided between the guide 254 and the cylindrical portion 261, and this gap is smaller than the gap between the plate 252 and the ball screw 255. Therefore, the plate 252 is in a state where it can move by the gap between the cylindrical portion 261 and the guide 254.

  When the plate 252 is raised, the positioning shaft 260 comes into contact with the positioning bush 259. Since the positioning bush 259 has a concave portion that fits with the head of the positioning shaft 260 with a small gap, the positioning shaft 260 is placed on the concave portion. The head is fitted. The concave portion may be cylindrical or spherical. The plate can move by the gap between the cylindrical portion 261 of the plate 252 and the guide 254, and the head of the positioning shaft 260 decreases in a stepped shape toward the tip, or the tip decreases in a tapered or spherical shape. Therefore, even if the positioning shaft 260 and the positioning bush 259 are misaligned, the plate 252 moves and the head of the positioning shaft 260 and the concave portion of the positioning bush 259 are formed. Fits securely. Then, when the upper end surface of the cylinder that is the base of the head of the positioning shaft 260 comes into contact with the lower end surface of the positioning bush 259, the ascent of the plate 252 stops.

  The length of the positioning shaft 260 is set so that the workpiece 204 on the pallet 212 has a normal height with respect to the heating caulking mechanism 203 in a state where the ascent is stopped. The normal height here means that the height of the pressing jig 111 of the heating caulking mechanism 203 and the lower hole 102 of the outer peripheral surface of the upper cylinder 12 are matched. Thereby, the height position of the work 204 with respect to the heating caulking mechanism 203 is determined. When the four positioning shafts 260 and the positioning bushing 259 are fitted, the plate 252 is moved, so that the pallet 212 having the bushing 216 fitted with the second pin 251 standing on the plate 252 is also moved. The coordinate position of the pallet 212 with respect to the heating caulking mechanism 203 becomes a normal position, and the workpiece 204 on the pallet 212 is positioned with respect to the pallet 212 by the workpiece positioning mechanism 201 on the near side, and the collet mechanism with respect to the pallet 212 Accordingly, the positioning of the workpiece 204 with respect to the heat caulking mechanism 203 is completed.

  At this time, the end faces of the four positioning shafts 260 and the positioning bush 259 are in contact with each other so as to surround the pallet 212. Therefore, even if an inclination occurs when the plate 252 rises, The parallelism is also corrected, so that there is no inclination of the pallet 212 with respect to the heat caulking mechanism 203 of the workpiece 204, and the parallelism is ensured. Even after the ascent, the collet mechanism 215 continues to act. In FIG. 22, reference numeral 263 denotes an empty pallet return conveyor that is different from the conveyor 205 that conveys the pallet 212 on which the workpiece 204 is placed.

  In this way, the pallet lift mechanism 202 can realize the positioning and parallelism of the pallet 212 with respect to the heating caulking mechanism 203 with high accuracy by an inexpensive mechanism, and as a result, the pressing jig 111 and the upper cylinder of the heating caulking mechanism 203. 12 The position of the prepared hole on the outer peripheral surface and the interval between the pressing jig 111 and the workpiece 204 before pressing can be matched with high accuracy. Note that the number of positioning shafts 260 and positioning bushes 259 is not limited to four, and if there are two, the plate 252 can be raised, and any number of two or more positioning shafts can be used. Although two cannot correct the parallelism of the plates 252, three or more are preferable so as to surround the pallet 212 as described above.

  FIG. 23 shows a configuration of a heating caulking mechanism 203 that actually heats and caulks the workpiece 204 positioned above the pallet lifting mechanism 202 and positioned with high accuracy by the pallet lifting mechanism 202. FIG. 23A is a plan view seen from above the heating caulking mechanism 203, and FIG. 23B is a cross-sectional view taken along the line P-P in FIG. ) Is an arrow view according to the arrow Q shown in FIG.

  In FIG. 23B, there is a pallet lift mechanism 202 on the right side of the drawing, and the workpiece 204 rises from the right side of the drawing to the left side. A pressing shaft 287 that reciprocates by the fifth air cylinder 285 and the fifth guide 286 is pressed down on the upper part of the workpiece 204 that has been lifted and positioned. Only one presser shaft 287 is located in the center of FIG.

  If the same caulking part is arranged at 120 ° pitch with respect to three caulking parts in the circumferential direction (the number of caulking points is 6) and the same pressing force is applied at the same time, no moment is applied to the work 204. It is difficult to apply the same pressing force at the same time due to the variation of 204 and the control of the device, etc. Especially when the time lag occurs, the workpiece is pushed by the first pressing of the three locations. 204 may move or rotate, and the position of the pilot hole 102 of the workpiece 204 and the pressing jig 111 may be shifted when the second or third caulking is performed. Therefore, the heating caulking mechanism 203 includes a backup shaft 271 that receives the pressing force of the caulking punch 270 on the side opposite to the caulking position of the workpiece 204. The backup shaft 271 is fixed to the flange 272, and the flange 272 is connected to the caulking side flange 273 to which the caulking punch 270 having the pressing jig 111 at the tip is attached by four link shafts 274. A servo press 277 for reciprocating the caulking punch 270 at a high speed is fixed to the caulking side flange 273.

  The heating caulking mechanism 203 includes three heating caulking machines, each of which includes four link shafts 274 so as to surround the caulking punch 270 and the backup shaft 271. Since the three caulking punches 270 and the three backup shafts 271 have the same height, the intervals between the link shafts 274 are different and are arranged so as to cross each other vertically. Therefore, the sizes of the flange 272 to which the link shaft 274 is connected and the caulking side flange 273 are different in the three heating caulking machines, and the interval between the four link shafts 274 is the smallest and is arranged in the center 4. The flange 273 and the caulking side flange 274 of the heating caulking machine having the link shaft 274 are the smallest.

  In each of the three heat caulking machines, the flange 273 and the caulking side flange 274 connected to the four link shafts 274 are integrally formed by the sixth air cylinder 275 and the sixth guide 276 to extend the link shaft 274. Can reciprocate in the current direction. The backup shaft 271 is brought into contact with the work 204 whose upper portion is pressed by the holding shaft 287 from three directions by direct movement by the sixth air cylinder 275 and the sixth guide 276. The force with which the presser shaft 287 presses the work 204 from above is large enough to prevent the work 204 from moving when the backup shaft 271 contacts the work 204. It is preferable that the three backup shafts 271 are moved simultaneously and brought into contact with the workpiece 204 at the same time because manufacturing time can be shortened. However, since the workpieces 204 are fixed by the pressing shaft 287, the workpieces 204 can be contacted one by one. There is no problem in that there is no misalignment. The contact surface of the tip of the backup shaft 271 with the workpiece 204 may be a flat surface, but if the workpiece 204 is formed in a curved surface substantially the same as the outer peripheral surface of the sealed container 1, the backup shaft 271 and the workpiece 204 are provided. The contact area is increased, and the pressing force can be reliably received.

  In a state where the backup shaft 271 is in contact with the workpiece 204 from three directions, the caulking punch 270 is moved in the direction of the workpiece 204 by operating the servo press 277 to bring the pressing jig 111 at the tip into contact with the sealed container 1. The servo press 277 stores the position information of the caulking punch 270 in the contact state as data. Each servo press 277 stores the position information of each caulking punch of the three heating caulking machines. The caulking punch 270 is once retracted by the operation of the servo press 277 again. Then, the seventh air cylinder 280 that reciprocates the high-frequency heating coil 278 for heating up and down and the seventh guide 281 are operated to lower the high-frequency heating coil 278 toward the workpiece 204, and further, the extending direction of the link shaft 274 The eighth air cylinder 282 and the eighth guide 283 that cause the high-frequency heating coil 278 to reciprocate are operated to bring the high-frequency heating coil 278 closer to the work 204 in the radial direction of the work 204.

  The high frequency heating coil 278 is fixed by a holder 279. When the high-frequency heating coil 278 is moved in the radial direction, the high-frequency heating coil 278 is provided with a stopper mechanism 284 for maintaining a predetermined distance between the sealed container 1 of the workpiece 204 and the high-frequency heating coil 278. By moving the high-frequency heating coil 278 until the mechanism 284 comes into contact with the sealed container 1, a predetermined distance between the sealed container 1 and the high-frequency heating coil 278 is secured. The high-frequency heating coil 278 is moved in the radial direction because the dimensions of the hermetic container 1 vary, and the three high-frequency heating coils 278 always have a predetermined distance from the hermetic container 1 with respect to the workpiece 204 only by lowering. This is because it is difficult to secure. Ensuring a predetermined distance between the sealed container 1 and the high-frequency heating coil 278 by bringing the stopper mechanism 284 into contact with the sealed container 1 can determine the position of the high-frequency heating coil 278 on the basis of the outer peripheral surface of the sealed container 1. In other words, a predetermined distance can always be secured without being affected by variations in dimensions of the sealed container 1. Moreover, since it is applicable also to the airtight container from which an outer diameter differs, it is excellent in versatility. Even if it is not a contact stopping mechanism, a non-contact method using infrared rays or the like may be used as long as it is based on the outer periphery of the sealed container 1.

  Each of the three heating caulking machines has a high-frequency heating coil 278, and at the same time, the high-frequency heating coil is moved, and when all the three distances between the sealed container 1 and the high-frequency heating coil 278 are secured to a predetermined distance. Then, a current is passed through the high-frequency heating coil 278 to heat the closed container 1 of the workpiece 204. When the heating part of the hermetic container 1 is heated to a predetermined temperature, for example, 900 ° C., the current is stopped to complete the heating, and the high-frequency heating coil 278 is replaced with the eighth air cylinder 282 and the eighth guide. The second air cylinder 280 and the seventh guide 281 are moved up and moved away from the workpiece 204 by moving the second air cylinder 280 and the seventh guide 281 away from the workpiece 204 in the radial direction of the workpiece 204. After heating up to a predetermined temperature, before the heat of the sealed container 1 cools down, for example, within 1 second after the completion of heating, the servo press 277 is operated, the caulking punch 270 is advanced toward the workpiece 204, and the pressing jig 111 is moved. Thus, a pressing force is applied to the sealed container 1, a convex portion 107 is formed on the inner peripheral side of the sealed container 1, caulking with the lower hole of the upper cylinder 11, and heat shrinkage of the sealed container 1 after cooling. Thus, a pinching force is generated between the pilot holes 102. This is performed simultaneously with three heating caulking machines, and pinching forces are generated at three locations at equal pitches, so that the compression mechanism unit 210 is fixed to the sealed container 1.

  Prior to caulking, the servo press 277 stores the position where the caulking punch 270 comes into contact with the sealed container 1, and from this data, the pressing completion position of the caulking punch 270 for obtaining the length of the predetermined convex portion 107 is calculated. Then, based on the result, the servo press 277 advances the caulking punch 270 to that position, so that the convex portion 107 of the sealed container 1 can be stably formed to a predetermined length. Since the flange 272 and the caulking side flange 273 are connected by the four link shafts 274 so as to surround the backup shaft 271 and the caulking punch 270, the heating caulking machine has high rigidity and can be caulked stably. Even if the link shaft 274 is one or two, both flanges can be connected, so that it is established as a device. However, in order to secure sufficient rigidity and realize stable caulking, a moment is supported. It is desirable to install three or more link shafts. Prior to caulking, the position at which the caulking punch 270 contacts the sealed container 1 is stored in the servo press 277, and the pressing completion position of the caulking punch 270 from which the length of the predetermined convex portion 107 is obtained is calculated from the data. The pressing completion position is determined based on the outer peripheral surface of the sealed container 1, and the convex portion 107 having a predetermined length can always be secured stably without being affected by the variation in the dimensions of the sealed container 1.

  After the caulking is completed, the pressing shaft 287 is raised to release the pressing, and the heating caulking process ends. The pallet 212 is lowered by the pallet mechanism 202, and the workpiece 204 is moved on the conveyor 205 toward the apparatus for performing the next step. At this time, the compression mechanism 210 is fixed to the sealed container 1 by the clamping force generated by the two caulking points adjacent to each other at three locations in the circumferential direction. I do not care.

  Thus, the caulking mechanism 203 can realize caulking with stable quality, and the heating caulking mechanism 203 includes the backup shaft 271. Therefore, the positions for heating caulking at a plurality of locations are 120 ° as described above. Even if the pitches are not equal, the back-up shaft 271 supports the pressing force of the caulking punch 270, so that caulking can be realized without applying a moment to the workpiece 204. Depending on the shape of the compression mechanism, the adjacent pilot holes 102 may not be arranged at an equal pitch, and even such a workpiece can be caulked. In addition, even if a plurality of locations are not caulked at the same time and are shifted one by one in time, the backup shaft 271 supports the pressing force of the caulking punch 270, so that no moment is applied to the workpiece 204. Caulking can be realized.

  The compressor in which the compression mechanism unit 210 is fixed to the sealed container 1 by the clamping force between adjacent caulking points due to the thermal contraction of the sealed container 1 with respect to the long-term use of the compressor Thus, the compressor can withstand the normal and excessive force generated during the operation of the compressor and the rigid compression mechanism 210 is fixed to the sealed container 1 without rattling. Further, since the distortion of the compressor mechanism is small, the performance can be improved. Furthermore, since the sealed container 1 cannot be perforated, a highly reliable compressor can be obtained in which foreign matter such as spatter is not mixed, and troubles such as incompatibility of the compressor due to the inclusion of foreign matter do not occur.

  In addition, although said Embodiment 2 was the heating crimping apparatus 200 used when carrying out three places of the crimping | crimping point of two adjacent points in the circumferential direction, increasing the number of crimping points which approach is more than two points, This can be dealt with by increasing the number of pressing jigs 111 for the caulking punch. Further, even when four or more caulking portions are implemented in the circumferential direction, the expansion can be achieved by increasing the number of heating caulking machines. However, when the four caulking punches are arranged at four positions with a 90 ° pitch, the back-up shaft cannot be installed. The flange that fixes the back-up shaft and the link shaft for connection. Is also unnecessary.

Embodiment 3 FIG.
In the workpiece positioning mechanism 201 shown in the second embodiment, the phase determination pin 226 is inserted into the suction pipe 214, and the phase determination pin 226 is moved to the reference position, thereby realizing the phase determination of the workpiece 204. In the third embodiment, a workpiece positioning mechanism 290 of another form is shown. The pallet lift mechanism and the heating caulking mechanism other than the workpiece positioning mechanism 290 are the same as the pallet lift mechanism 202 and the heating caulking mechanism 203 shown in the second embodiment, and a description thereof is omitted here.

  FIG. 24 shows a configuration of the workpiece positioning mechanism 290 of this form and a state where the workpiece 204 is actually positioned. Similar to the workpiece positioning mechanism 201 of the second embodiment, first, the head of the first pin 222 that reciprocates in the axial direction on the pallet 212 on which the workpiece 204 is placed by the first air cylinder 220 and the first guide 221. By inserting the portion into the bushing 216, the height is increased from the conveyor 205. As the pallet 212 is raised, the heights of the image recognition camera 232 and the suction pipe 214 of the workpiece 204 are matched. Similar to the workpiece positioning mechanism 201 of the second embodiment, the rough phase of the workpiece 204 with respect to the pallet 212 has already been determined, and the workpiece positioning mechanism 290 is roughly phased with respect to the pallet 212. In this mechanism, the workpiece 204 is phased more accurately and fixed to the pallet 212 by the collet mechanism 215.

  The image recognition camera 232 captures the suction pipe 214, recognizes the inner peripheral edge of the suction pipe 214 from the brightness of the image, thereby calculating the inner diameter of the suction pipe 214 at a plurality of locations, and calculates the current position from the plurality of inner diameters. The center of the suction pipe 214 is grasped. The image recognition camera 232 stores in advance the center position of the master work suction pipe in the normal phase state, compares the center position of the master work suction pipe with the current center position of the suction pipe 214, It is determined whether the deviation is at an acceptable level. If it is within the allowable level, the pallet 212 is lowered while the collet mechanism 215 is held without being released, and the pallet lift mechanism 202 responsible for the pallet positioning process with respect to the heating caulking machine, which is the second process. Then, the conveyor 205 is conveyed.

If it is determined that the phase shift is outside the allowable level, the phase is corrected. This correction process will be described below. Air is supplied to the collet mechanism 215 of the workpiece 204 to release it, and the chuck 236 connected by the plate 239 is lowered by the operation of the chuck vertical air cylinder 237 and the guide of the chuck vertical guide 238. The chuck 236 has a work clamping claw 242 in the lower part. When the chuck 236 is lowered, the work clamping claw 242 is lowered to a position where the work 204 can be grasped. Although only one workpiece clamping claw 242 is depicted in FIG. 24, there are actually three. The number of workpiece clamping claws 242 may be any number as long as it is two or more that can grip and rotate the workpiece 204. Then, by supplying air to the chuck 236, the three work clamping claws 242 move toward the work 204,
Grab and hold the workpiece 204. The chuck 236 is not operated by air, but may be an electric or hydraulic chuck. Further, the collet mechanism 215 may be released after the workpiece clamping claw 242 grasps the workpiece 204.

  The image recognition camera 232 calculates an angle for correcting the phase of the workpiece 204 from the deviation amount between the stored master work suction pipe center position as a reference and the current suction pipe 214 center position. The chuck 236 is rotated. The rotation of the chuck 236 is achieved by adjusting the rotation of the servo motor 243 with the gear 244 and transmitting it to the shaft 241 through the coupling 245, and this shaft 241 is connected to the chuck 236, and is necessary for correction. The chuck rotates by the angle. The shaft 241 is supported by the bearing unit 240 in the radial direction and the axial direction.

  When the rotation of the workpiece 204 for correcting the phase shift is completed, the image recognition camera 232 captures the suction pipe 214 of the rotated workpiece 204 again, grasps the center position thereof, and again the center position of the master workpiece suction pipe; The current center position of the suction pipe 214 is compared, and it is determined whether or not the phase shift is at an allowable level. If it is within the allowable level, the collet mechanism 215 is evacuated, the collet mechanism 215 is actuated, and the workpiece 204 is fixed to the pallet 212. Then, the chuck 236 is released, the work clamping claw 242 is opened, and the chuck 236 is raised by the operation of the chuck vertical air cylinder 237 and the guide of the chuck vertical guide 238. Almost simultaneously with the raising of the chuck 236, the pallet 212 is lowered, and the pallet lift mechanism 202 responsible for the pallet positioning process with respect to the heating caulking machine, which is the second process, is conveyed on the conveyor 205. If it is determined that the phase shift is outside the permissible level in the second determination after the correction, the collet 215 remains released, the chuck 236 is not released, and the phase correction operation is performed again in the same manner. The process is repeated until it is determined that it is within the permissible level. However, as long as there is no trouble in the apparatus, it can be normally completed with one correction.

  In this manner, the workpiece positioning mechanism 290 can achieve the phase determination of the workpiece 204 with respect to the pallet 212 with high accuracy without contact with the suction pipe 214. It should be noted that this is a step after the phase of the workpiece 204 is corrected by the rotation of the chuck 236 and before the pallet 212 is lowered, and a re-determination step by the image recognition camera 232 and the work 204 by the action of the collet mechanism 215. The fixing process with respect to the pallet 212 and the opening process of the work clamping claw 242 by releasing the chuck 236 are not limited to the above order, and the image recognition is performed after the work 204 fixing process by the action of the collet mechanism 215 is performed first. The re-determination process by the camera 232 and the work clamping claw 242 opening process may be performed in this order, or after the work 204 fixing process by the action of the collet mechanism 215 is performed first, the work clamping claw 242 opening process, You may advance in order of the redetermination process by the image recognition camera 232. However, when proceeding in this order, if it is determined that the re-determination step is outside the allowable level, the former requires a step of releasing the collet mechanism 215 again, and if the latter, the step of releasing the collet mechanism 215. The process of gripping the work clamping claws 242 is required again.

  In the second and third embodiments, the workpiece 204 is a twin rotary compressor, and the outer periphery of the upper cylinder 12 is caulked, but the other lower cylinder other than the upper cylinder 12 or the upper or lower portion of the upper cylinder 12 Even when the caulking part is formed on the partition plate that divides the two compression chambers between the two cylinders, one of the upper and lower bearing parts arranged at the lower part of the cylinder, the same device realizes caulking with accurate and stable quality. Can be applied to cylinders and upper / lower bearings of single rotary compressors with only one cylinder, fixed scrolls and main / sub bearing parts of scroll compressors, and motor stators of compressors And has the same effect.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to the drawings. FIG. 25 is a sectional view schematically showing a compressor according to Embodiment 4 of the present invention. FIG. 26 is an upper cylinder part of the compressor of FIG. 25, (a) is a plan view showing the pilot hole part cut away, and (b) is a longitudinal sectional view. 27 is a lower cylinder portion of the compressor of FIG. 25, (a) is a plan view, and (b) is a longitudinal sectional view. FIG. 28 is an explanatory view of the distortion of the upper cylinder portion due to the caulking stress of the compressor of FIG. FIG. 29 is a non-dimensionalized graph for explaining the amount of strain in the upper cylinder portion due to the caulking stress of the compressor of FIG. In FIG. 25 to FIG. 29, 1 is a sealed container which is a container of a hermetic compressor, 2 is a stator of a rotating electrical machine installed in the sealed container 1, and 3 is a rotor to which rotation is imparted by the stator 2. It is. Reference numeral 12 denotes an upper cylinder installed in the hermetic container 1, and 8 denotes an upper rolling piston that is disposed in the upper cylinder 12 and is fitted to the crankshaft upper eccentric portion 6 a of the crankshaft 6 that is rotated by the rotor 3 to rotate eccentrically. Is an upper vane that fits into the vane groove 12b of the upper cylinder 12 and divides the inside of the upper cylinder 12 together with the upper rolling piston 8 into a high pressure side and a low pressure side.

  A partition plate 13 is fixed to the lower surface of the upper cylinder 12 with bolts (not shown), and 5 is fixed to the upper surface of the upper cylinder 12 with bolts (not shown) and fixed to the upper cylinder 12 and the lower end surfaces of the upper cylinder 12. It is a frame which comprises the upper compression chamber 21 with the partition plate 13 made. In the process of compressing the refrigerant gas, in the seal portion 12e that seals the inner diameter of the upper cylinder 12 and the upper rolling piston 8 in the radial direction with the refrigerating machine oil (not shown) in the upper compression chamber 21, the refrigerant gas is reduced in pressure from the high pressure side. The upper rolling piston 8 in the upper cylinder 12 is disposed with a slight gap with respect to the inner diameter 12a of the upper cylinder 12 in order to prevent the refrigeration capacity of the compressor from being reduced due to leakage to the side. For this reason, the upper rolling piston 8 is arranged with a slight gap between the upper and lower surfaces of the upper rolling piston 8 and the partition plate 13 and the frame 5. Further, in the process of compressing the refrigerant gas, the upper vane 10 keeps a minute gap in the vane groove 12b of the upper cylinder 12 in order to prevent the refrigeration capacity of the compressor from being lowered due to the high pressure gas in the sealed container 1 leaking to the suction side. Are arranged.

  Reference numeral 11 denotes a lower cylinder fixed to the lower end surface of the partition plate 13, and reference numeral 7 denotes a lower rolling piston which is disposed in the lower cylinder 11 and is fitted to the crankshaft lower eccentric portion 6b of the crankshaft 6 which is rotated by the rotor 3 and rotates eccentrically. , 9 is a lower vane that fits into the vane groove 11b of the lower cylinder 11 and divides the inside of the lower cylinder 11 together with the lower rolling piston 7 into a high pressure side and a low pressure side. 4 is a cylinder that forms a lower compression chamber 20 together with a lower cylinder 11 and a partition plate 13 that is fixed to a lower surface of the lower cylinder 11 by bolts (not shown) and is fixed to an upper end surface of the lower cylinder 11 by bolts (not shown). Head. In the process of compressing the refrigerant gas, in the seal portion 11e that seals the inner diameter of the lower cylinder 11 and the lower rolling piston 7 in the radial direction with the refrigerating machine oil (not shown) in the lower compression chamber 20, the refrigerant gas is changed from the high pressure side to the low pressure side. The lower rolling piston 7 in the lower cylinder 11 is arranged with a slight gap with respect to the inner diameter 11a of the lower cylinder 11 in order to prevent the refrigeration capacity of the compressor from being reduced due to leakage into the cylinder. To the lower rolling piston 7 and the partition plate 13 and the cylinder head 4 with a slight gap. Further, in the process of compressing the refrigerant gas, the lower vane 9 keeps a minute gap in the vane groove 11b of the lower cylinder 11 in order to prevent the refrigeration capacity of the compressor from being lowered due to the high pressure gas in the sealed container 1 leaking to the suction side. Are arranged.

  Thus, in this embodiment, the compression mechanism 101, which is a built-in component that forms a compression means that covers the periphery of the compression chamber and is compressed in the container 1, includes the upper and lower cylinders 11, 12, the frame 5, the partition plate 13, It is composed of a cylinder head 4 and the like. Reference numeral 22 denotes a lower compression chamber that is fixed to the outside of the hermetic container 1 and sucks refrigerant gas from a refrigeration circuit (not shown) from a suction pipe 23 installed at the upper portion, and passes through a lower connection pipe 24 installed at the lower end. The suction muffler supplies the suction gas to 20 and supplies the suction gas to the upper compression chamber 21 via the upper connection pipe 25 installed at the lower end.

  As shown in FIGS. 25 to 26, if the inner diameter dimension of the sealed container 1 is Ds and the outer diameter dimension of the upper cylinder 12 is Duco, Ds> Duco as described in the first to third embodiments. The dimensional relationship is such that when the closed container 1 is fixed to the upper cylinder 12, a gap fit is provided. Also, as described in the first to third embodiments, a pilot hole 102 for caulking is disposed close to the outer peripheral surface of the upper cylinder 12, and the fixing portions of the two sets of pilot holes 102 are arranged in the circumferential direction. A plurality are arranged, and in this example, three places are provided. Then, the position opposite the pilot hole of the sealed container 1 is heated, and pressure is applied by the pressing jig 111 to form a convex portion 107 on the inner periphery which is the container wall portion of the sealed container 1, and each of the container convex portions 107 is formed on the upper cylinder. The first to third embodiments described above are inserted into the prepared hole 102 provided on the outer periphery of the outer periphery 12 and inserted into the prepared hole 107, and after cooling, the projecting portion 107 adjacent to the container wall portion sandwiches the prepared hole 102 due to the shrinkage of the sealed container 1. The upper cylinder 12 is fixed to the hermetic container 1 with a caulking portion by the same apparatus and processing method.

In this example, if the outer dimension of the upper cylinder 12 is Duco and the inner diameter dimension of the upper cylinder 12 in which the upper rolling piston 8 is accommodated is Duci,
Duci / Duco <0.75
The dimensions are related to each other.

  Next, the operation will be described. Refrigerant gas sucked from the refrigeration circuit is sucked into the suction muffler 22 via the suction pipe 23 and supplied to the upper cylinder 12 via the upper connection pipe 25. The refrigerant gas sucked into the low pressure side of the upper cylinder 12 is rotated by the upper rolling piston 8 and the upper cylinder 12 that rotate eccentrically in the upper cylinder 12 due to the eccentric rotation of the eccentric portion 6a of the crankshaft 6 caused by the rotation of the rotor 3. It is compressed by the upper vane 10 that fits into the vane groove 12 b and is discharged into the sealed container 1. The compressed refrigerant gas is discharged from the hermetic container 1 to a refrigerant circuit (not shown), and is condensed, decompressed, evaporated, and sucked into the compressor to be compressed again.

  When the upper cylinder 12 is fixed by the fixing portion of the set of prepared holes 102 provided on the outer periphery of the upper cylinder 12 and the set of convex portions 107 provided on the sealed container 1, the sealed container of a plurality of caulking portions is provided. If the positions of the convex portion 107 on the inner periphery and the prepared hole 102 provided on the outer peripheral surface of the upper cylinder are within the allowable range as designed, a set of the inner periphery of the sealed container 1 when the closed container 1 contracts due to cooling during caulking The adjacent convex portions 107 of the upper cylinder 12 are close to each other in the opposite direction, and the upper cylinder 12 is strained to the inner diameter 12a of the upper cylinder only by generating a local stress between a pair of adjacent pilot holes 102 on the outer periphery. In the case where the positions of the fixed portions of the convex portion 107 on the inner periphery of the sealed container 1 and the lower hole 102 on the outer periphery of the upper cylinder are shifted from the design position due to manufacturing variations of parts, Due to variations in cooling rate The position of the convex portion 107 on the inner periphery of the hermetic container and the position of the lower hole 102 on the outer periphery of the upper cylinder shifts from the caulking part at the first fixed position as a reference, and the position of the second container 102 on the outer periphery of the upper cylinder shifts from the delay in the cooling rate. When the heat shrinks 1, the convex portion 107 on the inner periphery of the sealed container 1 faces the lower hole 102 on the outer periphery of the upper cylinder 12, for example, in the direction of the place where it is first caulked and fixed. For example, as shown by an arrow line 12f in FIG. 28, stress may be generated between the caulking portions, and stress may be generated in the entire upper cylinder 12, and the inner diameter 12a of the upper cylinder 12 may be distorted. .

  As described above, the upper cylinder inner diameter 12a and the upper rolling piston 8 are provided with a minute gap to prevent performance deterioration due to leakage of refrigerant gas from the high pressure side to the low pressure side. For example, if the inner diameter 12a of the upper cylinder is distorted by the caulking stress, for example, as clearly shown by the line 12g, this minute gap is expanded, and the refrigerant gas leaks from the high pressure side to the low pressure side in the seal portion 12e. In addition, the amount of refrigerant gas circulated by the compressor to the refrigerant circuit (not shown) decreases, leading to a decrease in refrigeration capacity, and refrigerant recompression occurs due to refrigerant gas leakage from the high pressure side to the low pressure side. However, the compressor input increases and the efficiency of the compressor is reduced.

  FIG. 29 is a diagram showing the dimensionless distortion of the inner diameter 12a of the upper cylinder 12 when the outer diameter Duco of the upper cylinder 12 and the inner diameter Duci of the upper cylinder 12 are changed. In the upper cylinder 12 that is housed in the container 1 and is one of the built-in parts that form the compression means that covers the periphery of the upper compression chamber 21 and performs compression, according to this result, the ratio of Duci / Duco is 0.75 ( = 75%), that is, when the inner diameter 12a of the upper cylinder 12 is smaller than the predetermined value with respect to the outer diameter of the upper cylinder 12, the thickness of the upper cylinder 12 in the radial direction is increased, and the rigidity of this portion causes the upper cylinder to become thicker. The influence of the stress due to the caulking and fixing to the sealed container 1 at the outer diameter portion of the 12 is reduced, the distortion of the inner diameter 12a of the upper cylinder 12 can be reduced, the refrigerant gas leakage can be prevented, and a compressor with good performance and efficiency can be obtained. Can be provided.

  Further, conventionally, since the sealed container 1 is provided with a hole and the sealed container 1 and the upper cylinder 12 are fixed by welding from the outside, the sealed container 1 is provided with a hole. There was a risk that it would be unable to keep airtight due to a hole. Similarly, when welding fails due to a manufacturing error or the like and the compressor is disassembled in order to reuse the parts, when the sealed container 1 and the upper cylinder 12 are separated, they are integrated with the sealed container 1 of the welded portion of the upper cylinder 12 by welding. The compatible part peeled off and a large recess was formed on the outer periphery of the cylinder 12, making it impossible to weld the sealed container 1 again. Further, when a product equipped with a compressor is discarded, when it is disassembled for recycling, there is a compatible part as described above, so it has been troublesome to separate the sealed container 1 and the upper cylinder 12.

  In the fixing of the compression mechanism 101 to the container 1 by the caulking part according to this embodiment, since the airtight container 1 is not provided with a hole, there is no fear that the airtightness cannot be maintained, and the production yield is improved. In addition, since welding is not used for fixing, there is no compatible portion between the sealed container 1 and the upper cylinder 12, and when the compressor is disassembled in order to reuse the parts by failing to fix due to a manufacturing error or the like, the sealed container 1 Is cut in the axial direction and removed from the sealed container 1, the upper cylinder 12 returns to the initial state and can be used again. Further, when the product is discarded and disassembled for recycling, the upper cylinder 12 can be easily separated simply by cutting the sealed container 1 in the axial direction while avoiding the pilot hole 102 portion. It is easy and the burden on the environment can be reduced, and recycling becomes easy.

  If the upper cylinder 12 is removed from the sealed container 1 by incising in the axial direction by recycling, the lower hole 102 portion of the outer peripheral surface of the cylinder 12 cannot be reused if it is damaged at the time of incision, so this portion should be avoided. .

  Next, an example of the dismantling procedure at the time of recycling will be described. First, the upper and lower caps of the compressor are cut with a lathe. Next, the shell (sealed container 1) between the mechanical part (compression mechanism part 101) and the motor part having the stator 2 and the rotor 3 is cut with a lathe. Next, the shell (sealed container) attached to the mechanical part (compression mechanism part) is cut in the axial direction by means of saw, sander, fusing or the like. The mechanical part (compression mechanism part) can now be removed from the shell. Next, when the shell attached to the motor is similarly cut in the axial direction, the stator 2 can be removed, and then the mechanical part (compression mechanism part) can be removed by removing the bolt of the mechanical part (compression mechanism part). Next, the shaft 6 and the rotor 3 are removed with a press. In this case, the rotor 3 can be removed, but the rotor 3 is distorted and cannot be reused. Dismantling can be performed in such a procedure.

Next, another example of this embodiment will be described with reference to FIGS. FIG. 30 is a longitudinal sectional view schematically showing a compressor according to another example of the fourth embodiment of the present invention. FIG. 31 is a lower cylinder portion of the compressor of FIG. 30, (a) is a plan view showing the lower hole portion cut away, and (b) is a longitudinal sectional view. In the above example, it is the upper cylinder 12 that is caulked and fixed to the sealed container 1. However, as shown in FIGS. 30 and 31, the lower cylinder 11 side of the internal parts that form the compression means is attached to the upper cylinder 12. The container 1 may be fixed by caulking. In this example, except for the fact that the fixing portion by the lower hole 102 is arranged on the outer periphery of the lower cylinder 11 and caulked and fixed to the hermetic container 1 in the same manner as in the above example, the configuration and operation thereof are the same as the examples of FIGS. Are the same.
In this example as well, if the outer diameter Dlco of the lower cylinder 11 and the inner diameter Dlci of the lower cylinder 11 are set so as to suppress deformation when the lower cylinder 11 is fixed to the container 1,
Dlci / Dlco <0.75
The dimensions are as follows.
In this way, as in the example in which the upper cylinder 12 of FIGS. 25 to 29 is fixed, when Dlci / Dlco is lower than 0.75, that is, lower than 75%, it is lower than the outer diameter of the lower cylinder 11. When the inner diameter 11a of the cylinder is smaller than a predetermined value, the radial thickness of the lower cylinder 11 is increased, and the rigidity of this portion is less affected by caulking at the outer diameter portion of the lower cylinder 11, and the inner diameter of the lower cylinder 11 is reduced. 11a can reduce the distortion and provide a compressor with good performance and efficiency.

  As described above, according to the example of the above-described embodiment, the built-in component that is housed in the hermetic container 1 and that forms the compression means that covers the periphery of the compression chamber and performs compression, and the outer diameter side of the built-in component is predetermined. A fixed portion having an outer peripheral surface of a built-in component facing the sealed container 1 with a gap, a plurality of pilot holes 102 provided on the outer peripheral surface and arranged close to each other, and the fixed portion And a container convex portion 107 that is pressed from the outside of the container 1 and enters the plurality of pilot holes 102 to fix the container 1 and the built-in component. Since the inner diameter of the built-in component is made smaller than a predetermined value so as to suppress deformation when being fixed to the container 1, the strain of the built-in component can be reduced, and the refrigerant gas leaks in the seal portion of the compression chamber. High performance with good performance There is an effect that it is possible to provide a compressor. In addition, since the inner diameter of the built-in parts which are the cylinders 11 and 12 of the compression means fixed to the container 1 is made smaller than 75% of the outer diameter, the distortion of the built-in parts can be reduced, and a highly efficient compressor with good performance is provided. can do.

  As in the above example, when the upper cylinder 12 is fixed to the sealed container 1, there is almost no influence on the lower cylinder 11, and when the lower cylinder 11 is fixed, there is almost no influence on the upper cylinder 12. It is natural.

Next, another example of this embodiment will be described with reference to FIGS. FIG. 32 is a longitudinal sectional view schematically showing a compressor according to another example according to Embodiment 4 of the present invention. FIG. 33 is a partition plate portion of the compressor of FIG. 32 according to Embodiment 4 of the present invention, in which (a) is a plan view showing the pilot hole portion broken away, and (b) is a longitudinal sectional view. 34 is a dimensionless graph for explaining the amount of distortion of the partition plate portion of the compressor of FIG. 32 according to Embodiment 4 of the present invention. In the above example, the upper cylinder 12 and the lower cylinder 11 are caulked and fixed to the sealed container 1, but the partition plate 13 may be fixed as shown in FIGS. 32 and 33. In this example, the structure and operation are the same as in the example of FIG. 25 and the like except that a pilot hole 102 is arranged on the outer periphery of the partition plate 13 and is fixed by caulking to the sealed container 1.
In this example, the dimensions of the outer diameter Dmo of the partition plate 13 and the thickness Tm of the partition plate 13 are
Tm / Dmo> 0.01
It is what.
That is, the width Tm of the outer peripheral surface of the partition plate 13 that is one of the built-in components that cover the compression chambers 20 and 21 is smaller than the upper cylinder 12 and the lower cylinder 11 in the axial direction, and is larger than 1% of the outer shape Dmo. .

  In order to prevent performance deterioration due to leakage of refrigerant gas from the high pressure side to the low pressure side of the upper cylinder 12, the upper cylinder 12 and the upper rolling piston 8 are installed so as to maintain a slight clearance in the height direction, and the partition plate 13 The upper cylinder 12 is fixed to the upper end surface of the cylinder, and the frame 5 is fixed on the upper cylinder 12 to constitute the upper compression chamber 21. However, as in the case of the upper cylinder 12 and the lower cylinder 11, due to manufacturing variations of parts. If the upper end surface of the partition plate 13 is distorted due to the caulking stress on the outer periphery of the partition plate 13 due to the displacement of the caulking portion, the minute gap is enlarged and the leakage of the refrigerant gas increases, leading to a decrease in the performance of the compressor.

  FIG. 34 is a diagram showing the dimensionless amount of strain on the upper end surface of the partition plate 13 when the outer diameter Dmo of the partition plate 13 and the thickness Tm that is the width of the partition plate 13 are changed. As shown in FIG. 34, according to this result, when Tm / Dmo exceeds 0.01, that is, exceeds 1%, the thickness in the thickness direction of the partition plate 13 increases, and the rigidity of the partition plate 13 depends on the rigidity of this portion. The influence of the stress due to caulking at the outer diameter portion is small, the distortion of the upper end surface of the partition plate 13 can be reduced, and a compressor with good performance and efficiency can be provided.

Next, another example of this embodiment will be described with reference to FIGS. FIG. 35 is a longitudinal sectional view schematically showing a compressor according to still another example of Embodiment 4 of the present invention. FIG. 36 is a frame part of the compressor of FIG. 35, (a) is a bottom view showing the pilot hole part cut away, and (b) is a longitudinal sectional view. In the above example, the cylinder and the partition plate are fixed to the sealed container 1, but the frame 5 may be fixed to the container 1 with a caulking portion as shown in FIGS. 35 and 36. As shown in FIGS. 35 and 36, the structure and operation are the same as in the example of FIG. 25 and the like except that the fixing portion of the pilot hole 102 is arranged on the outer periphery of the frame 5 and fixed to the sealed container 1. is there. The same reference numerals as in the example of FIG. 25 indicate the same or corresponding parts.
In this example, the outer diameter Df of the frame 5 and the collar portion thickness Tf of the frame 5 are
Tf / Df> 0.01
It is said.
That is, it is a kind of built-in component that is thinner in the axial direction than the upper cylinder 12 and covers the compression chamber 21, and the width Tf of the outer peripheral surface of the frame 5 that is caulked and fixed to the container 1 is made larger than 1% of the outer shape Df. Yes.

  The upper cylinder 12 and the upper rolling piston 8 are installed so as to maintain a slight clearance in the height direction in order to prevent performance degradation due to leakage of the refrigerant gas from the high pressure side to the low pressure side of the upper cylinder 12. The upper cylinder 12 is fixed to the lower end surface of 5, and the partition plate 13 is fixed below the upper cylinder 12 to constitute the upper compression chamber 21, but in the same manner as in the case of the upper cylinder 12 and the lower cylinder 11, parts are manufactured. When the lower end surface of the frame 5 is distorted due to the caulking stress on the outer periphery of the frame 5 due to the displacement of the caulking portion due to the variation, the minute gap is enlarged, the leakage of the refrigerant gas is increased, and the performance of the compressor is deteriorated. However, when the Tf / Df exceeds 1% so that the Tf / Df is 0.01 as in the example of the partition plate of FIGS. 32 to 34 described above, the thickness of the frame 5 in the plate thickness direction becomes thick and the rigidity of this portion This reduces the influence of stress due to the caulking of the fixed portion at the outer diameter portion of the frame 5, reduces the distortion of the end face of the frame 5, prevents refrigerant gas from leaking, and provides a compressor with good performance and efficiency. can do.

Still another example of this embodiment will be described with reference to FIGS. FIG. 37 is a longitudinal sectional view schematically showing a compressor according to still another example according to Embodiment 4 of the present invention. FIG. 38 is a cylinder portion of the compressor of FIG. 37 according to Embodiment 4 of the present invention. FIG. 38 (a) is a plan view showing the pilot hole portion broken away, and FIG. 38 (b) is a longitudinal sectional view. In the above example, a so-called twin rotary type compressor having two cylinders and two compression means has been described. In this example, a so-called single rotary compressor having one cylinder will be described. In this example, as shown in FIG. 37 and FIG. 38, there is no cylinder and there is no partition plate, and a fixing portion by a pilot hole 102 is arranged on the outer peripheral surface of the cylinder 16 and fixed to the sealed container 1 by caulking. Except for the above, the configuration and operation are the same as in the example of FIG.
In this example, if the outer diameter of the cylinder 16 is Dco and the inner diameter of the cylinder 16 is Dci,
Dci / Dco <0.75
It is said.
That is, the inner diameter Dci of the cylinder 16 of the compression means, which is one of the built-in components housed in the sealed container 1, is made smaller than 75% of the outer diameter Dco.
Also in this example, when Dci / Dco is less than 0.75, that is, when the inner diameter of the cylinder is smaller than a predetermined value with respect to the outer diameter of the cylinder 16, as in the examples of FIGS. The wall thickness of the cylinder 16 is increased, and the rigidity of this portion reduces the influence of stress due to caulking at the outer diameter portion of the cylinder 16, and the distortion of the inner diameter 16a of the cylinder 16 can be reduced to provide a compressor with good performance and efficiency. Can do.

Next, still another example of this embodiment will be described with reference to FIGS. FIG. 39 is a longitudinal sectional view schematically showing a compressor according to still another example of Embodiment 4 of the present invention. 40 is a frame portion of the compressor of FIG. 39 according to Embodiment 4 of the present invention. FIG. 40 (a) is a bottom view showing the pilot hole portion broken away, and FIG. 40 (b) is a longitudinal sectional view. In the example of FIG. 37, the cylinder is fixed to the closed container, but the cylinder 5 may be fixed to the closed container 1. In this example, as shown in FIGS. 39 and 40, a pilot hole 102 is arranged on the outer periphery of the frame 5. The structure and operation are the same as those in the example of FIG. 37 except that it is fixed to the sealed container 1.
In this example, the outer diameter Df of the frame 5 and the collar portion thickness Tf of the frame 5 are
Tf / Df> 0.01
The dimensions are related.
That is, in the frame 5 that is a built-in component that is thinner than the cylinder 16 and covers the periphery of the compression chamber, the width Tf of the outer peripheral surface of the frame 5 that is caulked and fixed to the container 1 is set to be larger than 1% of the outer shape Df.

In order to prevent performance degradation due to leakage of refrigerant gas from the high pressure side to the low pressure side of the cylinder 16, the cylinder 16 and the rolling piston 14 are installed so as to maintain a slight clearance in the height direction. If the end face of the frame is distorted due to the caulking stress, the minute gap is enlarged, and the leakage of the refrigerant gas increases, leading to a reduction in the performance of the compressor.
However, as in the examples of FIGS. 35 to 36, when Tf / Df is over 1% such that 0.01, the thickness of the frame 5 in the plate thickness direction is increased, and the outer diameter of the frame 5 is increased by the rigidity of this portion. The influence of the stress due to caulking in the portion is small, the distortion of the end face of the frame 5 can be reduced, and a compressor with good performance and efficiency can be provided.

Next, another example of this embodiment will be described with reference to FIGS. FIG. 41 is a longitudinal sectional view schematically showing a compressor according to still another example of Embodiment 4 of the present invention. FIG. 42 is an upper cylinder portion of the compressor of FIG. 41 according to Embodiment 4 of the present invention, in which (a) is a plan view showing the pilot hole portion broken away, and (b) is a longitudinal sectional view. 43 is an explanatory view of the distortion of the upper cylinder portion due to the caulking stress of the compressor of FIG. 41 according to the fourth embodiment of the present invention. FIG. 44 is a non-dimensionalized graph illustrating the amount of distortion in the upper cylinder portion due to the caulking stress of the compressor of FIG. 41 according to the fourth embodiment of the present invention. In this example, caulking and fixing with the sealed container 1 are performed by the upper cylinder 12 as in the examples of FIGS. In order to prevent the performance of the compressor from deteriorating due to leakage of the refrigerant gas in the sealed container 1 that is at high pressure during operation to the low pressure side in the upper compression chamber 21, the upper compression chamber 21 is placed on the high pressure side as described above. The upper vane 10 and the vane groove 12b of the upper cylinder, which are divided into the low pressure side, are arranged with a minute gap.
In this example, the outer diameter Duco of the upper cylinder 12 and the thickness Tuc dimension which is the width of the upper cylinder 12 are
Tuc / Duco> 0.05
It is what.
In other words, the width Tuc of the outer peripheral surface of the cylinder 12 of the compression means, which is a built-in component fixed to the container 1 by the caulking portion, is larger than 5% of the outer shape Duco.

  When the upper cylinder 12 is caulked and fixed to the hermetic container 1 by a fixed portion of the lower hole 102 provided on the outer periphery of the upper cylinder 12 and a set of convex portions 107 provided on the hermetic container 1, a plurality of locations are provided. If the position of the convex portion 107 on the inner periphery of the sealed container 1 and the prepared hole 102 on the outer peripheral surface of the upper cylinder 12 is as designed, when the sealed container 1 contracts due to cooling, the adjacent convex portions 107 on the inner periphery of the sealed container 1 Are close to each other in the opposite direction, and only the local stress is generated between the two pilot holes 102 adjacent to the fixed portion on the outer periphery of the upper cylinder 12, so that the inner diameter 12 a of the upper cylinder 12 is distorted. The position of the lower hole 102 on the outer periphery of the upper cylinder corresponding to the convex portion 107 on the inner periphery of the sealed container 1 at a plurality of fixing portions (in this example, three fixing portions are owned) due to manufacturing variations of parts, etc. When the position is deviated from the design position Based on the fixed portion of the first fixed portion due to the variation in the cooling rate, the convex portion 107 on the inner periphery of the hermetic container and the lower hole on the outer periphery of the upper cylinder 12 are fixed at the next fixed portion due to the delay in the cooling rate. When the position of 102 is shifted and the sealed container 1 is thermally contracted, the convex portion 107 on the inner periphery of the sealed container, for example, toward the fixing portion at the position where the lower hole 102 on the outer periphery of the upper cylinder is first caulked and fixed, etc. For example, as shown in the direction of the line 12f in FIG. 43, stress may be generated in a direction other than the direction in which the pilot hole 102 is opposed, and stress may be generated in the entire upper cylinder 12. The vane groove 12b is distorted.

  As described above, the vane groove 12b of the upper cylinder 12 and the upper vane 10 have a small gap in order to prevent the performance of the refrigerant gas in the sealed container 1 having a high pressure from leaking to the low pressure side of the upper compression chamber 21. If the vane groove 12b of the upper cylinder is distorted as shown by the reference numeral 12h, for example, as shown by the arrow 12f in FIG. Gas leakage occurs, the circulation amount of the refrigerant gas discharged from the compressor to the refrigerant circuit (not shown) is reduced, and the refrigerating capacity is lowered. Leakage of the refrigerant gas to the low-pressure side of the inside causes recompression of the refrigerant, increasing the compressor input, and lowering the efficiency of the compressor.

FIG. 44 is a diagram showing the dimensionless distortion of the vane groove 12b of the upper cylinder 12 when the outer diameter Duco of the upper cylinder 12 and the thickness Tuc which is the width of the upper cylinder 12 are changed. According to this result, when Tuc / Duco exceeds 5% such as 0.05, that is, when the thickness of the upper cylinder is thicker than the outer diameter of the upper cylinder 12, the rigidity of the upper cylinder 12 depends on the rigidity of the upper cylinder 12. The impact of the caulking at the outer diameter portion can be reduced, the distortion of the vane groove 12b of the upper cylinder can be reduced, the leakage of refrigerant gas and the occurrence of recompression can be prevented, and a compressor with good performance and efficiency can be obtained. There is an effect that it can be provided.
As described above, the width of the outer peripheral surface of the built-in component is set to a predetermined value so as to suppress deformation when the built-in component such as the cylinder, the frame, and the partition plate is caulked and fixed to the sealed container 1 by the caulked portion by the pilot hole 102 and the convex portion 107. Since the size is increased, the influence of the stress on the built-in parts due to the fixing of the caulking portion can be reduced, and there is an effect that a compressor having good performance and efficiency can be provided.

  Still another example of this embodiment will be described with reference to FIGS. FIG. 45 is a longitudinal sectional view schematically showing a compressor according to yet another example according to Embodiment 4 of the present invention. 46 is a frame portion of the compressor of FIG. 45 according to Embodiment 4 of the present invention. FIG. 46 (a) is a plan view showing the pilot hole portion broken away, and FIG. 46 (b) is a longitudinal sectional view. This example is a general scroll compressor used in a refrigeration and air conditioner, and its mechanism and configuration are the same as those well known except for the caulking section. 45 to 46, 32 is a kind of a second built-in component housed in the container 1 and is a frame that is fixed to the sealed container 1 and slidably houses the orbiting scroll 33 on its inner bottom surface. A fixed scroll 34 is fixed to the frame 32 so as to be airtight so as to face the swing scroll 33. In this example, the inner diameter Ds of the sealed container 1 and the outer diameter Dsf of the frame 32 have a dimensional relationship such that Ds> Dsf, and there is a gap when the sealed container 1 is fixed to the frame 32. That is, the gap is fitted.

In addition, two lower holes 102 are installed close to each other on the outer periphery of the frame 32 to provide a fixing portion. For fixing to the sealed container 1, the prepared holes of the sealed container 1 are used in the same manner as in the above embodiment. The opposing position (heating center) is heated, pressure is applied by a pressing jig to form the convex portions 107 on the inner periphery of the container wall, and the convex portions 107 are inserted into the pilot holes 102 provided on the outer periphery of the frame 32, respectively. In the same manner as in the above-described embodiment, after the cooling, the airtight container 1 is fixed by caulking between the adjacent prepared holes 102 between the adjacent convex portions 107 due to the shrinkage of the airtight container 1. Reference numeral 35 denotes a crankshaft for swinging the swing scroll 33. Reference numeral 36 denotes a subframe for holding the lower portion of the crankshaft 35 so as to be able to rotate and slide, and fixing the outer diameter to the inner periphery of the sealed container 1. In order to ensure smooth rotation of 35, it is assembled while maintaining the coaxiality with the frame 32 at a constant level. Reference numeral 2 denotes a stator that is fixed to the hermetic container 1 and applies a rotational force to the rotor 3 fixed to the crankshaft 35.
In this example, the outer diameter Dsf and the collar thickness Tsf of the frame 32 are
Tsf / Dsf> 0.01
It is said.

Next, the operation will be described. The refrigerant gas is compressed in a compression chamber formed by the fixed scroll 34 by the swing of the swing scroll 33 which is the compression mechanism unit 101 and discharged to a refrigerant circuit (not shown), and compressed through condensation, decompression and evaporation. The cycle of being sucked into the machine and compressed again is repeated.
When the frame 32 is fixed by caulking and fixing with a set of projections 107 provided on the sealed container 1 and a fixed portion by a set of prepared holes 102 provided on the outer periphery of the frame 32, the inner circumference of the sealed container at a plurality of locations If the position of the caulking portion between the convex portion 102 and the pilot hole 102 on the outer periphery of the frame 32 is as designed, when the sealed container 1 contracts due to cooling, the pair of convex portions 107 on the inner periphery of the sealed container 1 are close to each other in the opposite direction. However, the frame 32 only generates local stress between the set of prepared holes 102 on the outer periphery, and the frame 32 is not distorted. When the position of the convex portion 107 on the inner periphery of the sealed container of the fixing portion and the prepared hole 102 on the outer periphery of the frame 32 is deviated from the design position, the fixing portion location of the caulking portion that is first caulked and fixed due to variation in the cooling rate is used as a reference. As The position of the convex portion 107 on the inner periphery of the sealed container is displaced from the position of the pilot hole 102 on the outer periphery of the frame 32, and the convex portion 107 on the inner periphery of the sealed container 1 is displaced from the position of the frame 32 when the sealed container 1 is thermally contracted. Stress is generated in the entire frame 32 by generating stress in a direction other than the direction in which the pilot holes 102 are close to each other, for example, in the direction of the fixing portion where the outer peripheral pilot holes 102 are first caulked and fixed. The frame 32 may be distorted.

  As described above, since the inner bottom surface of the frame 32 is slidably installed with the swing scroll 33, if the bottom portion is distorted, the sliding performance is lowered, and the quality such as the occurrence of seizure is deteriorated. Further, as described above, the frame 32 is assembled while maintaining the coaxiality with the sub-frame 36 at a certain level so that the rotation of the crankshaft 35 can be smoothly performed. The coaxiality is deteriorated, the smooth rotation of the crankshaft 35 cannot be maintained, the cost of goods such as seizure is reduced, and the crankshaft 35 may be tilted due to the deterioration of the coaxiality, and is fixed to the crankshaft 35. The rotor 3 that is present generates electromagnetic noise and vibration with respect to the stator 2 due to the unbalance of the gradient magnetic field. Further, as described above, since it is fixed in an airtight manner with the fixed scroll 34, if this portion is distorted, leakage of the refrigerant gas occurs, resulting in performance degradation.

  However, in this example, Tsf / Dsf is set to exceed 0.01 (= 1 percent) as in the examples of FIGS. 32 to 34 described above, that is, the thickness in the thickness direction, which is the width of the outer peripheral surface of the frame 32. Since the thickness is increased and the influence of the stress caused by the caulking portion at the outer diameter portion of the frame 32 is reduced by the rigidity of this portion, the distortion of the frame 32 can be reduced, and the quality, good vibration and noise can be reduced. In addition, a compressor having good performance and efficiency can be provided.

Next, another example of this embodiment will be described with reference to FIGS. FIG. 47 is a longitudinal sectional view schematically showing a compressor according to another example according to Embodiment 4 of the present invention. FIG. 48 is a subframe portion of the compressor of FIG. 47 according to Embodiment 4 of the present invention, in which (a) is a bottom view showing the pilot hole partly broken, and (b) is a longitudinal sectional view. In the example shown in FIGS. 45 and 46, the frame 32 is fixed by the closed container 1 and the caulking portion. However, in this example, as shown in FIGS. A pilot hole 102 is disposed on the outer peripheral surface of the sub-frame 36 as a kind of second built-in component that rotatably supports the means, and is fixed to the sealed container 1 by caulking. In this example, the configuration and operation are the same as those in the examples of FIGS. 45 to 46 except that the pilot hole 102 is disposed on the outer periphery of the subframe 36 and fixed to the sealed container 1. Further, the outer shape Dssf of the sub-frame 36 is fitted with a gap so that Ds> Dssf with respect to the inner diameter Ds of the container 1.
In this example, the outer diameter Dssf of the subframe 36 and the collar thickness Tssf, which is the width of the outer peripheral surface,
Tssf / Dssf> 0.01
It is trying to become.
That is, the width Tssf of the sub-frame 36 that is the second built-in component is set to be larger than 1% of the outer shape Dssf.

  As described above, the subframe 36 is assembled with the coaxiality with the frame 32 maintained at a certain level so that the rotation of the crankshaft 35 is smooth. Therefore, the subframe 36 is caulked in the same manner as in the examples of FIGS. If the sub-frame 36 is distorted due to stress due to the fixing of the portion, its coaxiality deteriorates, the smooth rotation of the crankshaft 35 cannot be maintained, quality deterioration such as seizure occurs, and the deterioration of the coaxiality causes the crankshaft 35 to In some cases, the rotor 3 fixed to the crankshaft 35 generates electromagnetic noise and vibration due to an unbalanced magnetic field with respect to the stator 2.

  However, in this example, the Tssf / Dssf is more than 0.01, that is, more than 1%, as in the examples of FIGS. 32 to 34 and FIGS. 45 to 46, that is, the outer peripheral surface of the subframe 36. The thickness in the plate thickness direction, which is the width of the sub-frame 36, is increased, and the influence of the stress due to caulking at the outer diameter portion of the sub-frame 36 is reduced by the rigidity of this portion, so that the distortion of the sub-frame 36 can be reduced. A compressor having good quality, good vibration and noise can be provided.

  Next, still another example of this embodiment will be described with reference to FIGS. FIG. 49 is a cross sectional view schematically showing a compressor according to still another example in accordance with Embodiment 4 of the present invention. FIG. 50 is a plan view of the rotary electric machine portion of the compressor of FIG. 49 according to Embodiment 4 of the present invention, with the pilot hole portion broken away. In the example of the above embodiment, the fixing of the sealed container 1 and the cylinder, the frame, the partition plate, etc. has been described. In this example, the fixing by the main caulking is applied to the fixing of the sealed container 1 and the stator 2 of the rotating electrical machine. explain about. In the conventional compressor, the hermetic container 1 and the stator 2 are fixed by tight fitting by shrink fitting or the like, and stress is generated in the entire stator 2 due to tightening allowance.

In general, the electromagnetic steel sheets constituting the stator 2 have characteristics that the electromagnetic characteristics are deteriorated and the iron loss is increased when stress is applied. In the conventional fixing method, the stator 2 is fixed to the hermetic container 1 to compress the compressor. The number of inputs increased and efficiency decreased. 49 to 50, the inner diameter Ds of the sealed container 1 and the outer diameter Dss of the stator 2 are
Ds> Dss
The dimensional relationship is such that when the closed container 1 is fixed to the stator 2, there is a gap. In addition, a set of prepared holes 102 that are fixed portions are arranged close to the outer periphery of the stator 2, and a plurality of fixed portions of the set of prepared holes 102 are arranged in the outer circumferential direction of the stator 2. In this example, as shown in FIG. 50, three fixing portions are provided on the outer peripheral surface of the stator 2 at substantially equal pitches in the outer peripheral circumferential direction. Then, the position opposite the pilot hole 102 (heating range) of the sealed container 1 is heated, pressure is applied by a pressing jig to form a convex portion 107 on the inner periphery, and the lower portions provided on the outer periphery of the stator 2 respectively. The convex portion 107 is inserted into the hole 102, and after cooling, the convex portion 107 is caulked and fixed to the sealed container 1 by sandwiching the lower hole 102 by contraction of the sealed container 1.

As described above, the pair of convex portions 107 of the sealed container sandwich the pair of pilot holes 102 of the stator 2 in the same manner as in the above embodiment, so that the stress is generated only in this fixed portion and the entire stator 2 is Never reach. Therefore, the region where the characteristics of the electromagnetic steel sheet constituting the stator 2 deteriorates also remains locally, and it is possible to suppress the deterioration of the electromagnetic characteristics as a whole, and an efficient rotating electrical machine is provided to increase the input of the compressor. Therefore, a compressor with good efficiency can be provided.
In other words, a stator 2 made of laminated electromagnetic steel sheets that are housed in a container 1 with a gap therebetween and arranged to face the rotor 3, and an outer periphery of the stator that faces the container 1 on the outer diameter side of the stator 2 A fixed portion having a plurality of pilot holes 102 provided on the outer peripheral surface and disposed in close proximity to each other, and a container wall portion corresponding to the fixed portion that is pressed from the outside of the container 1 to be pressed into the plurality of pilot holes 102 A container convex portion 107 for entering the container 1 and fixing the stator 2, and the pilot hole 102 is provided across a plurality of laminated electromagnetic steel plates to constitute a rotating electric machine, so that the distortion is small and good It is possible to provide a rotating electric machine with high performance and efficiency.

  Moreover, the manufacturing process of the compressor of said Embodiment 4 can be manufactured similarly to Embodiment 1-3, for example, the internal component which forms the compression means accommodated in the container 1, and compresses, or compression A built-in component that supports the means and has a plurality of pilot holes 102 arranged close to each other on the outer peripheral surface having a width equal to or greater than a predetermined value is stored in a container 1 provided through a gap. The heating range is suppressed to a position facing the plurality of pilot holes 102, and heating is performed from the outside of the container 1 in a temperature range higher than the softening temperature of the container material and lower than the melting point, and is pressed below the inner diameter of the lower hole 102. Built-in components in the step of pressing the container wall portion with the jig 111 to allow the container wall portion to enter the prepared hole 102 and the plurality of prepared hole groups in which the inserted container wall portion (convex portion 107) is arranged in the circumferential direction Sandwiched in a container 1 A step of, it is sufficient to include an effect that it is possible to reduce the distortion of internal parts can be produced compressor high efficiency with good performance. In addition, when pressing the container wall with the pressing jig 111, it is possible to further reduce the distortion of the built-in components by pressing a plurality of locations from the outer periphery of the container at a substantially equal pitch. There is an effect that a compressor can be manufactured.

The refrigerant used in the refrigerant cycle of the compressor described in the above embodiment is a natural refrigerant such as CFC refrigerant, HCFC refrigerant, HFC refrigerant, CO2, HC, air, water, 1,1,1,2 tetrafluoro. Refrigerants including propene and mixtures thereof may be used. In particular, even when a high-pressure refrigerant such as carbon dioxide refrigerant or HFC410A, which is in a supercritical state, is used and the expansion of the container 1 tends to increase, the structure of the present invention suppresses deformation of the cylinder of the compression means due to the pressure. This makes it possible to obtain an apparatus equipped with an efficient compressor.
In addition, the compressor refrigerating machine oil described in the above embodiment may use polyalkylene glycolose, ester, ether, alkylbenzene, mineral oil, and mixtures thereof. In particular, when the viscosity of the oil is used in a state where it is not compatible with the refrigerant, such as when the viscosity of the oil is low, such as 40 ° C. and 10 cSt or less, or when the compatible oil for the HFC refrigerant is 40 ° C. and 32 cSt or less. However, a device having a highly efficient compressor that reliably holds the seal portion that partitions the high and low pressures of the compression mechanism portion by the structure with less deformation of the built-in component of the present invention can be obtained.

  Moreover, the motor of the compressor which is a kind of rotating electrical machine can use what winds around the stator 2 by distributed winding, and what winds by concentrated winding. In particular, in the case of concentrated winding, windings are concentrated and wound on each magnetic pole. By providing a plurality of pilot holes on the outer peripheral side at the position of this magnetic pole center, a rotating electrical machine that is a motor with good characteristics can be obtained. . Further, it is more effective when used in a rotating electric machine using a rare earth magnet capable of increasing the magnetic flux density. The electromagnetic steel plates to be laminated are thin plates in the range of about 0.35 to 2 mm.

  In addition, the compressor motor (rotary electric machine) described in the above embodiment may be one that uses a ferrite magnet for the rotor 3 and one that uses a rare earth magnet. In particular, those using rare earth magnets have the effect that the motor can be miniaturized by a strong magnetic force, and a compact and efficient compressor can be obtained.

    Further, in the above embodiment, the hermetic compressor has been described. However, the fixing of the built-in component according to the present invention by the caulking portion can be applied not only to the hermetic compressor but also to a semi-hermetic compressor container.

  Moreover, you may use a cold rolled steel plate, a hot rolled steel plate, and an aluminum alloy for the airtight container 1 of a compressor.

  Further, in the above embodiment, the compression mechanism of the compressor is described as a rotary type and a scroll type. However, the caulking fixing of the present invention includes a swash plate type, a sliding vane type, a swing type, a vibration type, a screw type, etc. It can also be applied to a compression mechanism. In the above embodiment, the container is expressed as the sealed container 1, but the caulking configuration of the pilot hole 102 and the convex portion 107 of the present invention can be similarly applied to a semi-sealed container and an open container. An effect can be obtained.

As described above, according to the first to fourth embodiments of the present invention, the following effects can be obtained.
The compressor according to the embodiment of the present invention includes a built-in component that is housed in a container and that forms compression means that covers and compresses the periphery of the compression chamber, and has a predetermined width on the outer diameter side of the built-in component. An outer peripheral surface of a built-in component facing the container through a gap, a fixed portion having a plurality of pilot holes provided on the outer peripheral surface and arranged close to each other, and a container wall corresponding to the fixed portion, A container convex portion that is pressed from the outside of the container and enters into the plurality of pilot holes and fixes the container and the built-in component, and the built-in so as to suppress deformation when the built-in component is fixed to the container. Since the inner diameter of the component is made smaller than a predetermined value, there is an effect that the distortion of the built-in component can be reduced and a highly efficient compressor can be provided with good performance.

  In the compressor according to the embodiment of the present invention, the internal diameter of the built-in component that is the cylinder of the compression means is made smaller than 75% of the outer diameter, so that the distortion of the cylinder can be reduced and a highly efficient compressor is provided. There is an effect that can be done.

  The compressor according to the embodiment of the present invention includes a built-in component that is housed in a container and forms compression means that covers the periphery of the compression chamber and performs compression, and has a predetermined width on the outer diameter side of the built-in component. And an outer peripheral surface of the built-in component facing the container through a gap, a fixing portion having a plurality of prepared holes provided on the outer peripheral surface and arranged close to each other, and a container wall portion corresponding to the fixing portion. A container convex portion that is pressed from the outside of the container and enters into the plurality of pilot holes to fix the container and the built-in component, and suppresses deformation when the built-in component is fixed to the container. Since the width of the outer peripheral surface of the built-in component is made larger than a predetermined value, there is an effect that it is possible to reduce the distortion of the built-in component and provide a highly efficient compressor with good performance.

  In the compressor according to the embodiment of the present invention, the width of the outer peripheral surface of the built-in component which is a cylinder of the compression means is larger than 5% of the outer diameter, or is thinner than the cylinder and covers the periphery of the compression chamber. Since the width of the outer peripheral surface of the component is larger than 1% of the outer diameter, there is an effect that the distortion of the built-in component can be reduced, and a highly efficient compressor with good performance can be provided.

  The compressor according to the embodiment of the present invention includes a second built-in component that rotatably supports a compression unit that is housed in a container and performs compression, and a predetermined inner diameter side of the second built-in component. An outer peripheral surface of a second built-in component facing the container with a gap, a fixing portion having a plurality of pilot holes provided on the outer peripheral surface and arranged close to each other, and the fixing portion A container wall corresponding to the above, and a container convex portion that is pressed from the outside of the container and enters the plurality of pilot holes to fix the container and the second built-in part, and the second built-in part Since the width of the outer peripheral surface of the second built-in component is made larger than a predetermined value so as to suppress deformation when fixing the container to the container, the distortion of the second built-in component can be reduced, and compression with good performance and high efficiency is achieved. There is an effect that a machine can be provided.

  In the compressor according to the embodiment of the present invention, since the width of the outer peripheral surface of the second built-in component is larger than 1% of the outer diameter, the distortion of the second built-in component can be reduced and the performance can be improved. There is an effect that a highly efficient compressor can be provided.

  In the compressor according to the embodiment of the present invention, since a plurality of the compression means are provided and the fixing portion provided on the outer peripheral surface of the compression means is provided in at least one compression means, the distortion of the compression means can be reduced and good. There is an effect that it is possible to provide a highly efficient compressor with excellent performance.

  In the compressor according to the embodiment of the present invention, since a plurality of the fixing portions are provided at substantially equal pitches in the outer circumferential direction of the built-in component or the second built-in component, it is possible to reduce the distortion of the built-in component. There is an effect that a highly efficient compressor can be provided in terms of performance.

  In the compressor according to the embodiment of the present invention, one of the plurality of fixing portions provided in the vicinity of the groove for storing the vane for partitioning the compression chamber of the compression means can reduce distortion and is good. There is an effect that a highly efficient compressor can be provided in terms of performance.

  In the compressor according to the embodiment of the present invention, the container convex portion and the built-in component prepared hole are fixed in a state where the container is heated at a temperature higher than the softening temperature of the container material and lower than the melting point. Therefore, there is an effect that it is possible to reduce the distortion of the built-in parts and provide a highly efficient compressor with good performance.

  Further, in the compressor according to the embodiment of the present invention, since the pushing amount of the container convex portion entering the pilot hole is set to be ½ or less (half or less) or 1 mm of the container plate thickness, the distortion can be reduced. Thus, it is possible to provide a highly efficient compressor with good performance.

  In addition, the compressor according to the embodiment of the present invention has an annular groove of 180 ° or more as the fixing portion instead of the plurality of pilot holes forming the fixing portion, so that the distortion of the built-in parts can be reduced. There is an effect that it is possible to provide a highly efficient compressor with excellent performance.

  In the compressor according to the embodiment of the present invention, the refrigerant compressed by the compression means uses water, air, natural refrigerants such as carbon dioxide, HFC refrigerant, or HCFC refrigerant. There is an effect that a compressor can be provided.

  In addition, the rotating electrical machine according to the embodiment of the present invention includes a stator made of laminated electromagnetic steel sheets that are housed in a container with a gap therebetween and arranged to face the rotor, and an outer diameter side of the stator. A stator outer peripheral surface facing the container, a fixing portion provided on the outer peripheral surface and having a plurality of pilot holes arranged close to each other, and a container wall corresponding to the fixing portion, the outer side of the container The container and the container convex part that fixes the container and the stator, and the pilot hole is provided across a plurality of laminated electromagnetic steel sheets, so that the strain is small. There is an effect that it is possible to provide a highly efficient rotating electric machine with good performance.

  Further, in the rotating electrical machine according to the embodiment of the present invention, the stator is formed by concentrating the winding around the magnetic pole, so that it is possible to provide a highly efficient rotating electrical machine with good performance. is there.

  Further, in the rotating electrical machine according to the embodiment of the present invention, a plurality of the fixing portions are provided at substantially equal pitches in the outer circumferential direction of the stator, so that it is possible to provide a rotating electrical machine with good performance and high efficiency. There is an effect.

  The compressor manufacturing method according to the embodiment of the present invention is a built-in component that forms a compression means that is housed in a container and performs compression, or a built-in component that supports the compression means, and has a width greater than a predetermined value. A built-in component provided with a plurality of pilot holes arranged close to each other on the outer peripheral surface is stored in a container provided through a gap, and the heating range is suppressed to a position facing the plurality of pilot holes. The container wall is heated from the outside of the container at a temperature range not lower than the softening temperature and lower than the melting point of the container material, and pressed against the inner wall of the lower hole with a pressing jig equal to or smaller than the inner diameter of the lower hole. And a step of sandwiching the built-in component in a plurality of pilot holes arranged in the circumferential direction and fixing the built-in component to the container. Can be small There is an effect that it is possible to manufacture the compressor, high-efficiency good performance.

  In the compressor manufacturing method according to the embodiment of the present invention, when the container wall is pressed by the pressing jig, a plurality of locations are pressed from the outer peripheral side of the container at a substantially equal pitch. It is possible to produce a highly efficient compressor with good performance.

1 is a cross-sectional view schematically showing a hermetic compressor according to Embodiment 1 of the present invention. It is principal part sectional drawing for demonstrating the structure and formation method of the crimping part shown in FIG. 1 by Embodiment 1 of this invention. It is principal part sectional drawing for demonstrating the structure and formation method of the crimping part shown in FIG. 1 by Embodiment 1 of this invention. It is principal part sectional drawing for demonstrating the structure and formation method of the crimping part shown in FIG. 1 by Embodiment 1 of this invention. It is principal part sectional drawing for demonstrating the structure and formation method of the crimping part shown in FIG. 1 by Embodiment 1 of this invention. It is the figure which looked at the caulking part shown in Drawing 5 by Embodiment 1 of this invention from the outside of an airtight container. It is principal part sectional drawing for demonstrating the structure of the crimping part shown in FIG. 1 by Embodiment 1 of this invention. It is the figure seen from the outer side of the airtight container explaining the example of a certain arrangement | positioning in case the number of the caulking points which adjoin by Embodiment 1 of this invention is three points. It is the figure seen from the outer side of the airtight container explaining the example of a certain arrangement | positioning in case the number of caulking points which adjoin by Embodiment 1 of this invention is 4. It is a simplified diagram which shows the crimping punch for forming a convex part in the airtight container by Embodiment 1 of this invention. It is principal part sectional drawing for demonstrating the structure of the crimping part shown in FIG. 1 by Embodiment 1 of this invention. It is a simplified arrangement | positioning figure which shows the apparatus for forming the crimping part by Embodiment 1 of this invention. It is sectional drawing of the cylinder part for demonstrating the phase of the several crimping | crimping part by Embodiment 1 of this invention. It is a graph which shows the change of the cylinder vane groove width by the phase change of the caulking part by Embodiment 1 of this invention. It is sectional drawing for demonstrating the pilot hole process on the basis of the suction hole of the cylinder by Embodiment 1 of this invention. It is the figure seen from the outer side of the airtight container explaining the example which forms the ring-shaped crimping part by Embodiment 1 of this invention. It is a whole block diagram of the heating crimping apparatus by Embodiment 2 of this invention, (a) is a top view, (b) is sectional drawing of the XX line of (a). It is process drawing of the operation | movement flow of the heating crimping apparatus by Embodiment 2 of this invention. It is sectional drawing which shows the state of the workpiece | work mounted on the pallet by Embodiment 2 of this invention. FIG. 6 is a configuration diagram of a workpiece positioning mechanism according to Embodiment 2 of the present invention, where (a) is a plan view viewed from above, (b) is a cross-sectional view taken along line YY of (a), and (c) is (a). (D) is a partial arrow view seen from C of (b). It is a block diagram explaining the state of the workpiece | work positioning mechanism by Embodiment 2 of this invention. It is a block diagram of the pallet lift mechanism by Embodiment 2 of this invention, (a) is a longitudinal cross-sectional view, (b) is a side view. FIG. 5 is a configuration diagram of a heating caulking mechanism according to Embodiment 2 of the present invention, in which (a) is a top view, (b) is a cross-sectional view taken along the line P-P in (a), and (c) is viewed from Q in (b). FIG. It is a block diagram explaining the structure and state of the workpiece | work positioning mechanism of the heating crimping apparatus by Embodiment 3 of this invention. It is sectional drawing which shows schematically the compressor by Embodiment 4 of this invention. In the upper cylinder part of the compressor of FIG. 25 according to Embodiment 4 of the present invention, (a) is a plan view showing the pilot hole part broken away, and (b) is a longitudinal sectional view. In the lower cylinder part of the compressor of FIG. 25 according to Embodiment 4 of the present invention, (a) is a plan view and (b) is a longitudinal sectional view. It is explanatory drawing of distortion of the upper cylinder part by the crimping stress of the compressor of FIG. 25 by Embodiment 4 of this invention. It is the graph which made dimensionless the distortion amount of the upper cylinder part by the crimping stress of the compressor of FIG. 25 by Embodiment 4 of this invention. It is a longitudinal cross-sectional view which shows schematically the compressor by the other example of Embodiment 4 of this invention. FIG. 30 is a lower cylinder portion of the compressor of FIG. 30 according to Embodiment 4 of the present invention, in which (a) is a plan view showing the pilot hole portion broken away, and (b) is a longitudinal sectional view. It is a longitudinal cross-sectional view which shows schematically the compressor by another example by Embodiment 4 of this invention. 32 is a partition plate portion of the compressor of FIG. 32 according to Embodiment 4 of the present invention, in which (a) is a plan view showing the pilot hole portion broken away, and (b) is a longitudinal sectional view. It is the graph which made dimensionless the partition plate partial distortion amount of the compressor of FIG. 32 by Embodiment 4 of this invention. It is a longitudinal cross-sectional view which shows schematically the compressor by another example by Embodiment 4 of this invention. FIG. 35A is a frame view of the compressor of FIG. 35 according to Embodiment 4 of the present invention, in which FIG. It is a longitudinal cross-sectional view which shows roughly the compressor by another example by Embodiment 4 of this invention. FIG. 37 is a cylinder portion of the compressor of FIG. 37 according to Embodiment 4 of the present invention, in which (a) is a plan view showing the pilot hole portion broken away, and (b) is a longitudinal sectional view. It is a longitudinal cross-sectional view which shows schematically the compressor by the further another example by Embodiment 4 of this invention. 39 (a) is a bottom view of the compressor according to the fourth embodiment of the present invention, and FIG. 39 (b) is a longitudinal sectional view. It is a longitudinal cross-sectional view which shows roughly the compressor by another example by Embodiment 4 of this invention. 41 is an upper cylinder portion of the compressor of FIG. 41 according to Embodiment 4 of the present invention, in which (a) is a plan view showing the pilot hole portion broken away, and (b) is a longitudinal sectional view. It is explanatory drawing of the distortion of the upper cylinder part by the crimping stress of the compressor of FIG. 41 by Embodiment 4 of this invention. It is the graph which made dimensionless the distortion amount of the upper cylinder part by the crimping stress of the compressor of FIG. 41 by Embodiment 4 of this invention. It is a longitudinal cross-sectional view which shows roughly the compressor by another example by Embodiment 4 of this invention. 45A is a frame portion of the compressor of FIG. 45 according to Embodiment 4 of the present invention, in which FIG. 45A is a plan view showing the pilot hole portion broken away, and FIG. It is a longitudinal cross-sectional view which shows schematically the compressor by another example by Embodiment 4 of this invention. 47A is a subframe portion of the compressor of FIG. 47 according to Embodiment 4 of the present invention, in which FIG. 47A is a bottom view showing the pilot hole portion broken away, and FIG. It is sectional drawing which shows roughly the compressor by another another example by Embodiment 4 of this invention. It is a top view which fractures | ruptures a pilot hole part and shows the rotary electric machine part of the compressor of FIG. 49 by Embodiment 4 of this invention.

Explanation of symbols

1 Sealed container (container) 2 Stator 3 Rotor 4 Cylinder head 5 Frame 6 Crankshaft 6a Crankshaft upper eccentric part 6b Crankshaft lower eccentric part 7 Lower rolling piston 8 Upper rolling Piston, 9 lower vane, 10 upper vane, 11 lower cylinder, 11a inner diameter, 11b vane groove, 11e seal part, 12 upper cylinder, 12a inner diameter, 12b vane groove, 12e seal part, 12f arrow explaining stress, 12g cylinder inner diameter Distortion, 12h vane groove distortion, 13 partition plate, 16 cylinder, 16a inner diameter, 16b vane groove, 16c outer peripheral surface, 20 lower compression chamber, 21 upper compression chamber, 22 suction muffler, 23 suction pipe, 24 lower connection pipe, 25 Upper connection pipe, 32 frames, 33 oscillating scroll, 34 fixed Crawl, 35 Crankshaft, 36 Subframe, 101 Compression mechanism (built-in part, compression means), 102 Pilot hole (fixed part), 103 Suction pipe, 106 Concave part, 107 Convex part (container convex part), 108 Heating range, 109 heating center, 110 base, 111 pressing jig, 112 pressing machine, 113 pressing force, 114a first caulking position, 114b second caulking position, 114c third caulking position, 115 suction Hole, 116 toroidal concave band, 200 heat caulking device, 201 work positioning mechanism, 202 pallet lift mechanism, 203 heat caulking mechanism, 204 work (compressor), 205 conveyor, 210 compression mechanism, 211 suction hole, 212 pallet 213 ring, 214 suction pipe, 215 collet mechanism, 216 bushing, 220 first air cylinder, 221 first guide, 222 first pin, 223 coupler, 224 third air cylinder, 225 third guide, 226 phasing pin, 227 guide, 228 fourth Air cylinder, 229 Second air cylinder, 230 Second guide, 231 stopper, 232 Image recognition camera, 236 Chuck, 237 Chuck vertical air cylinder, 238 Chuck vertical guide, 239 Plate, 240 Bearing unit, 241 axis, 242 Workpiece Claw for clamping, 243 servo motor, 244 gear, 245 coupling, 250 motor, 251 second pin, 252 plate, 253 plate, 254 guide, 255 ball screw, 256 pulley, 257 belt 258 Coupling, 259 Positioning bush, 260 Positioning shaft, 261 Cylindrical part, 262 Feeding bush, 263 Conveyor, 270 Caulking punch, 271 Backup shaft, 272 Flange, 273 Caulking side flange, 274 Link shaft, 275 Sixth air cylinder 276 Sixth Guide, 277 Servo Press, 278 High Frequency Heating Coil, 279 Holder, 280 Seventh Air Cylinder, 281 Seventh Guide, 282 Eighth Air Cylinder, 283 Eighth Guide, 284 Stopping Mechanism 285, fifth air cylinder, 286 fifth guide, 287 holding shaft, 290 workpiece positioning mechanism.

Claims (18)

A built-in component that is housed in a container and that forms compression means that covers and compresses the periphery of the compression chamber, and a built-in component that is on the outer diameter side of the built-in component and has a predetermined width and faces the container through a gap. An outer peripheral surface, a fixing portion provided on the outer peripheral surface and having a plurality of prepared holes, and a container wall portion corresponding to the fixing portion, which is pressed from the outside of the container and A container convex portion for entering the pilot hole and fixing the container and the built-in component, and reducing the inner diameter of the built-in component from a predetermined value so as to suppress deformation when the built-in component is fixed to the container. Features compressor. 2. The compressor according to claim 1, wherein an inner diameter of the built-in component which is a cylinder of the compression means is made smaller than 75% of an outer diameter. A built-in component that is housed in a container and that forms compression means that covers and compresses the periphery of the compression chamber, and a built-in component that is on the outer diameter side of the built-in component and has a predetermined width and faces the container through a gap. An outer peripheral surface, a fixing portion provided on the outer peripheral surface and having a plurality of prepared holes, and a container wall portion corresponding to the fixing portion, which is pressed from the outside of the container and A container projection for entering the pilot hole and fixing the container and the built-in component, and making the width of the outer peripheral surface of the built-in component larger than a predetermined value so as to suppress deformation when the built-in component is fixed to the container A compressor characterized by that. The width of the outer peripheral surface of the built-in component that is the cylinder of the compression means is greater than 5% of the outer diameter, or the width of the outer peripheral surface of the built-in component that is thinner than the cylinder and covers the periphery of the compression chamber is greater than 1% of the outer diameter. The compressor according to claim 3, wherein the compressor is large. A second built-in component rotatably supported by a compressing means housed in the container and compressing, and has a predetermined width on the outer diameter side of the second built-in component and faces the container through a gap An outer peripheral surface of the second built-in component, a fixing portion provided on the outer peripheral surface and having a plurality of pilot holes arranged close to each other, and a container wall portion corresponding to the fixing portion, outside the container So as to suppress deformation when the second built-in component is fixed to the container. The compressor characterized in that the width of the outer peripheral surface of the second built-in component is made larger than a predetermined value. 6. The compressor according to claim 5, wherein the width of the outer peripheral surface of the second built-in component is larger than 1% of the outer diameter. The compressor according to any one of claims 1 to 4, wherein a plurality of the compression means are provided, and the fixing portion provided on an outer peripheral surface of the compression means is provided in at least one compression means. The compressor according to any one of claims 1 to 7, wherein a plurality of the fixing portions are provided at substantially equal pitches in an outer circumferential direction of the built-in component or the second built-in component. 9. The compressor according to claim 8, wherein one of the plurality of fixing portions provided is provided in the vicinity of a groove for storing a vane for partitioning the compression chamber of the compression means. The container convex part and the built-in component pilot hole are fixed in a state where the container is heated at a temperature higher than the softening temperature of the container material and lower than the melting point. The compressor described in 1. The compressor according to any one of claims 1 to 10, wherein an amount of pressing of the container convex portion entering the pilot hole is set to 1/2 or less of the container plate thickness or about 1 mm. The compressor according to any one of claims 1 to 11, further comprising an annular groove of 180 ° or more as the fixing portion instead of the plurality of pilot holes forming the fixing portion. The compressor according to any one of claims 1 to 12, wherein the refrigerant compressed by the compression means is natural refrigerant such as water, air, carbon dioxide gas, HFC refrigerant, or HCFC refrigerant. A stator made of laminated electromagnetic steel sheets stored in a container through a gap and disposed opposite to the rotor; a stator outer peripheral surface facing the container on an outer diameter side of the stator; and the outer periphery A fixing portion having a plurality of pilot holes provided on the surface and arranged close to each other; and a container wall corresponding to the fixing portion, which is pressed from the outside of the container and enters into the plurality of pilot holes. And a container projection for fixing the stator, wherein the pilot hole is provided across a plurality of laminated electromagnetic steel sheets. 15. The rotating electrical machine according to claim 14, wherein the stator is configured to wrap the winding around the magnetic pole. The rotating electrical machine according to claim 14 or 15, wherein a plurality of the fixing portions are provided at substantially equal pitches in the outer circumferential direction of the stator. A built-in component that forms a compression means that is stored in a container and performs compression, or a built-in component that supports the compression means, and has a plurality of pilot holes arranged close to each other on an outer peripheral surface having a width of a predetermined value or more. A step of accommodating the provided built-in component in a container provided through a gap; and a melting point above the temperature at which the container material is softened from the outside of the container while suppressing a heating range at a position facing the plurality of prepared holes. Heating in a temperature range below, pressing the container wall with a pressing jig having an inner diameter equal to or less than the inner diameter of the pilot hole, and allowing the container wall to enter the pilot hole; And a step of sandwiching the built-in component with a plurality of prepared hole groups arranged in the container and fixing the built-in component to the container. The method for manufacturing a compressor according to claim 17, wherein when the container wall is pressed by the pressing jig, a plurality of locations are pressed at a substantially equal pitch from the outer peripheral side of the container.

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