JP4439332B2 - Hermetic compressor and method for fixing hermetic container and compressor mechanism of hermetic compressor - Google Patents

Hermetic compressor and method for fixing hermetic container and compressor mechanism of hermetic compressor Download PDF

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JP4439332B2
JP4439332B2 JP2004147575A JP2004147575A JP4439332B2 JP 4439332 B2 JP4439332 B2 JP 4439332B2 JP 2004147575 A JP2004147575 A JP 2004147575A JP 2004147575 A JP2004147575 A JP 2004147575A JP 4439332 B2 JP4439332 B2 JP 4439332B2
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compression mechanism
container
sealed container
hermetic
pressing
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JP2005330827A (en
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真紀 岡田
俊明 岩崎
元一 浮岡
智博 白畑
正一郎 原
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Mitsubishi Electric Corp
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Description

この発明は、例えば冷凍装置や空調装置などに好ましく用いることができる密閉形圧縮機及び密閉形圧縮機の密閉容器と圧縮機構部との固定方法に関する。 The present invention relates to a fixed how the example refrigeration apparatus or air-conditioning apparatus sealed container and the compression mechanism portion of the hermetic compressor and hermetic compressor can be preferably used for.

従来の密閉形圧縮機としては、密閉容器に穴あけ加工を施し、圧縮機構部を密閉容器に焼嵌め、穴部外側から溶融金属を流し込み、内蔵部品を密閉容器に固定する方法がある（例えば特許文献１参照。）。
また、密閉容器外側に穴あけ加工を施さない圧縮機の圧縮機構部を密閉容器内に圧入し位置決めされた後、圧縮機構部に設けた凹部に対向する密閉容器を押付治具にて放射方向内向きに押付け、密閉容器を凹部のように塑性変形させ、圧縮機構部を密閉容器内に固定するようにしたものがある（例えば特許文献２参照。）。 As a conventional hermetic compressor, there is a method in which a hermetic container is drilled, the compression mechanism is shrink-fitted into the hermetic container, molten metal is poured from the outside of the hole, and the built-in components are fixed to the hermetic container (for example, patents) Reference 1).
In addition, after the compression mechanism part of the compressor not drilled on the outside of the sealed container is press-fitted into the sealed container and positioned, the sealed container facing the recess provided in the compression mechanism part is placed in the radial direction with a pressing jig. There is one in which the airtight container is plastically deformed like a recess and the compression mechanism is fixed in the airtight container by pressing in the direction (see, for example, Patent Document 2).

特開平０６−２７２６７７号公報（第２頁、図１）Japanese Patent Laid-Open No. 06-272677 (second page, FIG. 1) 特表平６−５０９４０８号公報（第１頁、図１）JP-T-6-509408 (1st page, FIG. 1)

上記のような従来技術においては、下記のような課題があった。
１．密閉容器に穴あけ加工を施すものでは、溶接時に穴部から溶接スパッタ等の異物が混入したり、溶接不良により密閉容器穴部から冷媒のリークが発生する恐れがある。
２．密閉容器に穴あけ加工を施さないものでは、密閉容器に圧縮機構部を圧入するため、圧縮機構部の締付け力が増加し、圧縮機構部に歪が発生する。さらに圧縮機構部の凹部に対応する部分を密閉容器の外側から押し付けるときに、圧縮機構部に直接力が加わる為、圧縮機構部に発生する歪みが増加する。 The prior art as described above has the following problems.
1. In the case of drilling a sealed container, foreign matter such as welding spatter may enter from the hole during welding, or refrigerant leakage may occur from the sealed container hole due to poor welding.
2. In the case where the airtight container is not punched, the compression mechanism is press-fitted into the airtight container, so that the tightening force of the compression mechanism increases and distortion occurs in the compression mechanism. Further, when a portion corresponding to the concave portion of the compression mechanism portion is pressed from the outside of the sealed container, a force is directly applied to the compression mechanism portion, so that distortion generated in the compression mechanism portion increases.

この発明は上記のような従来技術の課題を解消するためになされたもので、溶接スパッタ等の異物が混入したり、冷媒のリークの恐れがなく、かつ密閉容器内に圧縮機構部を固定したときに圧縮機構部の受ける応力を減少させた密閉形圧縮機を提供することを目的とするものである。
また、塑性変形により固定部を形成する際に、密閉容器の内周部と外周部の双方にせん断を積極利用することにより、小さな力で加工することができ、しかも密閉容器内に圧縮機構部を固定したときに圧縮機構部の受ける応力を減少させた密閉形圧縮機の密閉容器と圧縮機構部の固定方法を提供することを目的とするものである。
また、溶接スパッタ等の異物が混入したり、冷媒のリークの恐れがなく、かつ密閉容器内に圧縮機構部を固定したときに圧縮機構部の受ける応力を減少させることができる密閉形圧縮機の製造装置を提供することを目的とするものである。 The present invention has been made to solve the above-described problems of the prior art, and there is no fear of foreign matters such as welding spatter or refrigerant leakage, and the compression mechanism is fixed in a sealed container. An object of the present invention is to provide a hermetic compressor in which the stress received by the compression mechanism is reduced.
Further, when forming the fixed part by plastic deformation, it is possible to process with a small force by actively utilizing shear on both the inner peripheral part and the outer peripheral part of the hermetic container, and the compression mechanism part in the hermetic container. It is an object of the present invention to provide a method for fixing a hermetic container of a hermetic compressor and a compression mechanism part in which the stress received by the compression mechanism part is reduced.
In addition, there is no fear of foreign matter such as welding spatter or leakage of refrigerant, and a hermetic compressor that can reduce the stress received by the compression mechanism when the compression mechanism is fixed in the sealed container. The object is to provide a manufacturing apparatus.

この発明による密閉形圧縮機においては、密閉容器内に圧縮機構部が収納された密閉形圧縮機において、上記圧縮機構部は、上記密閉容器の内周部に対向する外周部に凹部が形成されてなり、上記密閉容器は、該圧縮機構部の凹部に対応する部分が外側から該凹部の底部の方向に押し付けられてせん断された状態で該凹部内に進入され、上記密閉容器の外周部に該圧縮機構部の凹部と略同様の押付治具による凹所が形成されてなり、これら圧縮機構部の凹部及び密閉容器の押付部により、上記密閉容器と圧縮機構部相互の固定部を形成されてなるものであって、上記固定部は、上記圧縮機構部の外周部に互いに近接して設けられた複数の凹部を用いて形成されてなり、かつ該固定部を周方向に１箇所以上設けてなるものである。
また、この発明による密閉形圧縮機の密閉容器と圧縮機構部の固定方法は、密閉形圧縮機における密閉容器とこの密閉容器内に収納された圧縮機構部の固定方法において、上記密閉容器の内周部に対向する上記圧縮機構部の外周部に凹部を形成して、上記密閉容器内に収容した後、上記凹部と略同一寸法もしくはわずかに小さい押付治具を用いて、該密閉容器の外側から上記圧縮機構部の凹部に対応する部分を該凹部の底部の方向に押し付けて、該密閉容器をせん断させた状態で上記凹部内に進入させることにより、上記密閉容器と圧縮機構部とを固定するとともに、上記圧縮機構部の凹部を複数近接させて設け、上記押付治具を用いて上記密閉容器を押し付けた後、近接させた押付部相互の密閉容器中央部を加熱するようにしたものである。 In the hermetic compressor according to the present invention, in the hermetic compressor in which the compression mechanism portion is accommodated in the hermetic container, the compression mechanism portion has a recess formed in an outer peripheral portion facing the inner peripheral portion of the hermetic container. The sealed container is inserted into the recessed portion in a state where the portion corresponding to the recessed portion of the compression mechanism portion is pressed and sheared from the outside toward the bottom of the recessed portion. recess is formed by the recess and substantially the same pressing jig of the compression mechanism portion, the pressing portion of the recess and sealed container of the compressor mechanism section, is formed a fixing portion of the compression mechanism portion mutually and the closed container The fixing portion is formed by using a plurality of recesses provided close to each other on the outer peripheral portion of the compression mechanism portion, and the fixing portion is provided at one or more locations in the circumferential direction. It will be.
Further, the method for fixing the hermetic container and the compression mechanism part of the hermetic compressor according to the present invention is the method of fixing the hermetic container in the hermetic compressor and the compression mechanism part housed in the hermetic container. After forming a recess in the outer peripheral portion of the compression mechanism portion facing the peripheral portion and storing it in the sealed container, the outer side of the sealed container is used by using a pressing jig that is substantially the same size or slightly smaller than the recess. The portion corresponding to the concave portion of the compression mechanism portion is pressed in the direction of the bottom of the concave portion, and the closed vessel is allowed to enter the concave portion in a sheared state, thereby fixing the closed vessel and the compression mechanism portion. In addition, a plurality of concave portions of the compression mechanism portion are provided close to each other, and after pressing the closed container using the pressing jig, the central portions of the closed containers of the pressed portions close to each other are heated. is there

この発明による密閉形圧縮機によれば、溶接スパッタ等の異物が混入したり、冷媒のリークの恐れがなく、かつ密閉容器内に圧縮機構部を固定するときに圧縮機構部の受ける応力が減少されていることにより、圧縮機性能が向上された密閉形圧縮機を提供することができる。
また、この発明による密閉形圧縮機の密閉容器と圧縮機構部の固定方法によれば、塑性変形により固定部を形成する際に、密閉容器の内周部と外周部の双方にせん断を積極利用することにより、小さな力で加工することができ、しかも密閉容器内に圧縮機構部を固定したときに圧縮機構部の受ける応力を減少させた密閉形圧縮機の密閉容器と圧縮機構部の固定方法を提供することができる。
また、この発明による密閉形圧縮機の製造装置においては、製造過程で溶接スパッタ等の異物が混入したり、冷媒のリークの恐れがなく、かつ密閉容器内に圧縮機構部を固定するときに圧縮機構部の受ける応力が減少される。 According to the hermetic compressor according to the present invention, there is no fear of foreign matters such as welding spatter or refrigerant leakage, and the stress received by the compression mechanism when the compression mechanism is fixed in the hermetic container is reduced. Thus, a hermetic compressor with improved compressor performance can be provided.
Further, according to the method for fixing the sealed container and the compression mechanism of the hermetic compressor according to the present invention, when forming the fixed part by plastic deformation, shear is actively used for both the inner and outer peripheral parts of the sealed container. The method of fixing the hermetic container and the compression mechanism part of the hermetic compressor that can be processed with a small force and that reduces the stress received by the compression mechanism part when the compression mechanism part is fixed in the hermetic container Can be provided.
Moreover, in the manufacturing apparatus for a hermetic compressor according to the present invention, there is no possibility of foreign matter such as welding spatter entering the manufacturing process or leakage of the refrigerant, and compression is performed when the compression mechanism is fixed in the hermetic container. The stress received by the mechanism is reduced.

実施の形態１．
図１及び図２はこの発明の実施の形態１による密閉形圧縮機、及び密閉形圧縮機の密閉容器と圧縮機構部の固定方法を説明するもので、図１は要部を概略的に示す断面図、図２は固定部の構造、及び固定方法を示す要部断面図である。図において、密閉容器１に収容される圧縮機構部２における、該密閉容器１の内周部１ａに対向する外周部２１には、周方向所定部に正面から見て例えば円形の凹部２２が形成されている。密閉容器１の外側から凹部２２と略同一寸法もしくはわずかに小さく先端が平面形状である押付治具３を該凹部２２の底部２２ａの方向に押し付けることにより、密閉容器１の押付部を塑性変形させ、図２に示すように該密閉容器１の内周部１ａ、外周部１ｂ共に積極的にせん断させることで、密閉容器１の内周部１ａに、圧縮機構部２の凹部２２と緊密に係合する円柱状の凸部１０が形成され、該凹部２２と凸部１０で密閉容器１と圧縮機構部２相互を固定する固定部４が形成されている。 Embodiment 1 FIG.
1 and 2 illustrate a hermetic compressor according to Embodiment 1 of the present invention, and a method of fixing the hermetic container and the compression mechanism of the hermetic compressor. FIG. 1 schematically shows the main part. Sectional drawing and FIG. 2 are principal part sectional drawings which show the structure and fixing method of a fixing | fixed part. In the figure, in the compression mechanism part 2 accommodated in the sealed container 1, an outer peripheral part 21 facing the inner peripheral part 1a of the sealed container 1 is formed with a circular concave part 22, for example, when viewed from the front in a predetermined part in the circumferential direction. Has been. The pressing portion of the hermetic container 1 is plastically deformed by pressing the pressing jig 3 having substantially the same size as or slightly smaller than the concave portion 22 from the outside of the hermetic container 1 toward the bottom portion 22a of the concave portion 22. As shown in FIG. 2, both the inner peripheral portion 1a and the outer peripheral portion 1b of the sealed container 1 are positively sheared so that the inner peripheral portion 1a of the sealed container 1 is in close contact with the concave portion 22 of the compression mechanism portion 2. The cylindrical convex part 10 to join is formed, and the fixing part 4 which fixes the airtight container 1 and the compression mechanism part 2 to each other is formed by the concave part 22 and the convex part 10.

なお、１１は密閉容器（上）、１２は密閉容器（下）、１３は密閉容器１の外周部１ｂの押付部に形成された凹所、２３は圧縮機構部２で圧縮する圧縮ガスの吸入管である。また、５は電動機部であり、ロータ５１、クランクシャフト５２、ステータ５３などから構成されている。これらについては公知の従来技術を特別な制限なく用いることができる部分であるので詳細図示及び動作説明を省略する。また、各図を通じて同一符号は同一もしくは相当部分を示すものとする。   In addition, 11 is an airtight container (upper), 12 is an airtight container (lower), 13 is a recess formed in the pressing part of the outer peripheral part 1b of the airtight container 1, 23 is suction | inhalation of the compressed gas compressed by the compression mechanism part 2. It is a tube. Reference numeral 5 denotes an electric motor unit, which includes a rotor 51, a crankshaft 52, a stator 53, and the like. Since these are portions where the known prior art can be used without any particular limitation, detailed illustration and explanation of operations will be omitted. The same reference numerals denote the same or corresponding parts throughout the drawings.

次に上記のように構成された実施の形態１の動作について説明する。圧縮機構部２における、密閉容器１の内周部１ａに対向する外周部２１には、周方向所定部に１箇所もしくは複数箇所に凹部２２を形成しておく。この外周部２１に凹部２２を設けた圧縮機構部２は密閉容器１に隙間嵌めで挿入する。次に、例えば図２に示すように凹部２２と外径が略同一寸法もしくはわずかに小さく先端が平面形状のハンコ型（円柱状）の押付治具３を用いて密閉容器１を外側から底部２２ａの方向（図の左方向）に押し付けるように加圧することで、加圧時に圧縮機構部２の凹部２２と押付治具３により積極的に密閉容器１の内周部１ａ及び外周部１ｂをせん断し、かつ圧縮機構部２を固定するために必要な円筒状の凸部１０を形成し、圧縮機構部２を密閉容器１に緊密に固定する。   Next, the operation of the first embodiment configured as described above will be described. In the outer peripheral portion 21 facing the inner peripheral portion 1a of the sealed container 1 in the compression mechanism portion 2, concave portions 22 are formed at one or a plurality of locations in a predetermined portion in the circumferential direction. The compression mechanism part 2 provided with the recess 22 in the outer peripheral part 21 is inserted into the sealed container 1 with a gap fit. Next, for example, as shown in FIG. 2, the closed container 1 is moved from the outside to the bottom 22a by using a pressing jig 3 having a substantially the same or slightly smaller outer diameter as that of the recess 22 or having a flat tip at the tip. By pressing so as to press in the direction (left direction in the figure), the inner peripheral portion 1a and the outer peripheral portion 1b of the sealed container 1 are actively sheared by the concave portion 22 of the compression mechanism portion 2 and the pressing jig 3 during pressurization. And the cylindrical convex part 10 required in order to fix the compression mechanism part 2 is formed, and the compression mechanism part 2 is fixed to the airtight container 1 tightly.

上記のように、押付治具３で押し付け（加圧）を行った場合には、積極的にせん断を利用していることで加圧を効率的に行うことができ、押付力（押込み力）を低減させ、圧縮機構部２に発生する歪を減少させることができる。なお、押付治具３による押し付け前に凹部２２に対向する密閉容器１を局所的に加熱することにより、密閉容器１の剛性を下げることができるため、押付力が低減し、圧縮機構部２の固定時に発生する歪をさらに減少させることができる。   As described above, when pressing (pressurization) is performed with the pressing jig 3, pressurization can be efficiently performed by positively using shear, and pressing force (pressing force) And the distortion generated in the compression mechanism unit 2 can be reduced. In addition, since the rigidity of the airtight container 1 can be lowered by locally heating the airtight container 1 facing the recess 22 before being pressed by the pressing jig 3, the pressing force is reduced, and the compression mechanism portion 2 It is possible to further reduce the distortion generated at the time of fixing.

上記のように、この実施の形態１によれば、密閉容器１と圧縮機構部２を固定する際、予め圧縮機構部２の外周部に凹部２２を設け、密閉容器１外側から凹部２２と同様もしくはわずかに小さく先端が平面形状である押付治具３を押し付けることにより、密閉容器１の内外周部１ａ、１ｂをせん断することで、圧縮機構部２の受ける力を減少させ、密閉容器１内に圧縮機構部２を固定することができる。また、押付治具３による押し付けの前に凹部２２に対応する密閉容器１を局所的に加熱した場合には密閉容器１の剛性を下げることができるため、押付力が低減され、圧縮機構部２に発生する歪をさらに減少させることができる。   As described above, according to the first embodiment, when the sealed container 1 and the compression mechanism unit 2 are fixed, the outer periphery of the compression mechanism unit 2 is provided with the recess 22 in advance, and the same as the recess 22 from the outer side of the sealed container 1. Alternatively, the force received by the compression mechanism 2 is reduced by pressing the pressing jig 3 having a slightly flat tip at the tip, thereby shearing the inner and outer peripheral portions 1a and 1b of the sealed container 1, thereby reducing the pressure in the sealed container 1 The compression mechanism part 2 can be fixed to. Further, when the sealed container 1 corresponding to the recess 22 is locally heated before being pressed by the pressing jig 3, the rigidity of the sealed container 1 can be lowered, so that the pressing force is reduced and the compression mechanism section 2 is reduced. Can be further reduced.

実施の形態２．
この実施の形態２では、上記図１に示す実施の形態１と同様の密閉形圧縮機の密閉容器と圧縮機構部の固定を行う際に、圧縮機構部に発生する歪を低減させるために、加圧時の押付力は圧縮機構部に塑性歪が発生しない力以下とし、上記押付け力内にて所定押込み量を得られるように加熱量を調整した。例えば、何れも図示を省略している厚さ１２．８ｍｍ、鋳鉄製のロータリ圧縮機シリンダは、加圧時に約１３００ｋｇｆ程度でベーン溝根元部が塑性変形するため、加圧時の押込み力は１３００ｋｇｆ以下とし、その押付け力内にて所定押込み量が得られるように加熱量を調節することにより、良好な固定部を得ることができる。 Embodiment 2. FIG.
In the second embodiment, in order to reduce the distortion generated in the compression mechanism section when fixing the sealed container and the compression mechanism section of the hermetic compressor similar to the first embodiment shown in FIG. The pressing force at the time of pressurization was set to be equal to or less than a force that does not cause plastic strain in the compression mechanism, and the heating amount was adjusted so as to obtain a predetermined pressing amount within the pressing force. For example, a rotary compressor cylinder made of cast iron with a thickness of 12.8 mm, which is not shown in the figure, is about 1300 kgf at the time of pressurization, and the root part of the vane groove is plastically deformed. By adjusting the heating amount so that a predetermined pressing amount is obtained within the pressing force as described below, a good fixing portion can be obtained.

具体的には、例えば最大押付力を１３００ｋｇｆ、ＴＩＧ溶接機を加熱源とし、密閉容器の板厚３．６ｍｍに対し目標押込み量を１．５ｍｍとした場合について、試験を行った結果、ＴＩＧ溶接機による加熱量が２００Ａ、１０Ｖ、２ｓｅｃでは１ｍｍ程度しか押し込むことができなかったのに対し、密閉容器をさらに軟化させ容易に変形させるため、例えば上記加熱時間を３ｓｅｃにした他は同一条件で、押付治具を押込むことで、圧縮機構部に塑性歪を発生させること無く、目標押込み量を得ることができた。   Specifically, for example, when the maximum pressing force is 1300 kgf, the TIG welding machine is used as a heating source, and the target pressing amount is 1.5 mm with respect to the plate thickness of 3.6 mm of the sealed container, the result of the test is TIG welding. Whereas the heating amount by the machine was 200A, 10V, and 2 seconds, it could only be pushed in by about 1 mm, while the sealed container was further softened and deformed easily. For example, under the same conditions except that the heating time was 3 seconds, By pressing the pressing jig, the target pressing amount could be obtained without generating plastic strain in the compression mechanism.

実施の形態３．
図３は、この発明の実施の形態３による密閉形圧縮機、及びその密閉容器と圧縮機構部の固定方法を模式的に示す要部断面図であり、（ａ）は押し付け前の加熱位置を示す図、（ｂ）は凹所形成後の冷却収縮による締付けを説明する図である。図に示すように、この実施の形態３では、上記実施の形態１と同様の圧縮機構部２の外周部２１に２箇所以上の凹部２２、２２を近接させて設け、隣接する２つの凹部２２、２２の中央部に対応する密閉容器１の矢印で示す加熱部１４を外側から加熱し、２つの押付治具（図示省略）で同時に密閉容器１の外側から押し付け、密閉容器１の内周部１ａに２つの凸部１０、１０を形成することで、密閉容器１の冷却収縮により密閉容器の凸部１０、１０が内蔵した圧縮機構部２を矢印Ａで示すように周方向に締付けて圧縮機の性能に影響する部分の歪を増加させること無く、圧縮機構部２を固定することができる。 Embodiment 3 FIG.
FIG. 3 is a cross-sectional view schematically showing a main part of a hermetic compressor according to a third embodiment of the present invention and a fixing method of the hermetic container and the compression mechanism, and (a) shows a heating position before pressing. The figure shown, (b) is a figure explaining the clamping | tightening by the cooling shrinkage | contraction after recess formation. As shown in the figure, in the third embodiment, two or more concave portions 22 and 22 are provided close to the outer peripheral portion 21 of the compression mechanism portion 2 similar to the first embodiment, and two adjacent concave portions 22 are provided. The heating part 14 indicated by the arrow of the sealed container 1 corresponding to the center part of 22 is heated from the outside and simultaneously pressed from the outside of the sealed container 1 by two pressing jigs (not shown), and the inner peripheral part of the sealed container 1 By forming the two convex portions 10 and 10 on 1a, the compression mechanism portion 2 built in the convex portions 10 and 10 of the sealed container is tightened in the circumferential direction as shown by the arrow A by the cooling contraction of the sealed container 1 and compressed. The compression mechanism unit 2 can be fixed without increasing the distortion of the part that affects the performance of the machine.

例えば圧縮機構部２の外周部２１に近接させて設けた２つの凹部２２、２２の間の寸法Ｌが６ｍｍ、凹部２２、２２の中央部に位置する密閉容器１の加熱部１４を約１０００℃に加熱した後、押付治具で成形した場合、加熱により２つの凹部２２、２２間の密閉容器１が約７０μｍ程度膨張するため、加圧による密閉容器１の凸部１０、１０形成後の冷却収縮により、圧縮機構部１を周方向に約７０μｍ締付けることができる。   For example, the dimension L between the two recesses 22, 22 provided close to the outer peripheral part 21 of the compression mechanism 2 is 6 mm, and the heating unit 14 of the sealed container 1 located at the center of the recesses 22, 22 is about 1000 ° C. When heated with a pressing jig, the sealed container 1 between the two recesses 22 and 22 expands by about 70 μm due to heating, so cooling after forming the raised parts 10 and 10 of the sealed container 1 by pressurization. By the contraction, the compression mechanism 1 can be tightened by about 70 μm in the circumferential direction.

このように、圧縮機構部２の外周部２１に複数の凹部２２、２２を近接させて設け、図示を省略している押付治具を密閉容器１の外側から押し付ける（加圧する）前に密閉容器１の凹部間中央部の加熱部１４を加熱することで、密閉容器凹部間の冷却収縮により密閉容器１凸部１０、１０間が収縮するため、圧縮機構部２を矢印Ａで示す周方向に締付け、圧縮機構部２の性能に影響を与える部分の歪を増加させること無く、圧縮機構部２を密閉容器１内に固定することができる。   As described above, the plurality of concave portions 22 and 22 are provided close to the outer peripheral portion 21 of the compression mechanism portion 2, and before the pressing jig (not shown) is pressed (pressurized) from the outside of the sealed container 1, the sealed container By heating the heating part 14 in the central part between the concave parts 1, the space between the convex parts 10, 10 of the sealed container 1 contracts due to cooling shrinkage between the concave parts of the sealed container, so that the compression mechanism part 2 is moved in the circumferential direction indicated by the arrow A. The compression mechanism 2 can be fixed in the sealed container 1 without increasing the distortion of the portion that affects the performance of the tightening and compression mechanism 2.

実施の形態４．
図４は、この発明の実施の形態４による密閉形圧縮機における密閉容器と圧縮機構部の固定方法の要部を示す断面図である。この実施の形態４は、上記実施の形態１において局所加熱後の冷却により密閉容器１の凸部１０が冷却収縮し、圧縮機構部２の凹部２２と密閉容器１の凸部１０との間にガタが発生する恐れがある場合や、凸部１０による締付け力が低く運転時に内蔵部品に振動が発生する恐れが場合などに好ましく用いることができるもので、密閉容器１に近接させて設けた２つの凸部１０、１０間の加熱部１４を局所加熱して密閉容器１を変形させ、密閉容器１の凸部１０、１０間を収縮させることで圧縮機構部２の凹部２２、２２間を締付け、ガタや振動を取除くようにしたものである。 Embodiment 4 FIG.
4 is a cross-sectional view showing a main part of a method for fixing a sealed container and a compression mechanism in a hermetic compressor according to Embodiment 4 of the present invention. In the fourth embodiment, the convex portion 10 of the sealed container 1 is cooled and contracted by the cooling after the local heating in the first embodiment, so that the gap between the concave portion 22 of the compression mechanism portion 2 and the convex portion 10 of the sealed container 1 is reduced. This can be preferably used in cases where there is a risk of rattling or when the tightening force by the convex portion 10 is low and there is a risk of vibration occurring in the built-in components during operation. The heating part 14 between the two convex parts 10 and 10 is locally heated to deform the sealed container 1, and the convex parts 10 and 10 of the sealed container 1 are contracted to tighten the concave parts 22 and 22 of the compression mechanism part 2. , To remove backlash and vibration.

例えば、図４のように板厚３．２ｍｍの密閉容器にて密閉容器１の周方向又は軸方向の凸部１０、１０相互の距離Ｌ＝６ｍｍの中央部加熱部１４をＴＩＧ溶接機にて加熱したとき（溶接条件：１０Ｖ、２００Ａ、１．５ｓｅｃ）、凸部１０、１０間は局所加熱による塑性変形で、矢印Ｂで示す方向に約１００μｍ収縮する。
このように、実施の形態４によれば、実施の形態３と同様に近接して設けた固定部を押し付けるときの加圧により圧縮機構部を固定した後、密閉容器１の近接する２つの凸部１０、１０間を局所加熱することで、密閉容器１を変形させ、密閉容器１と圧縮機構部２の締付け力を増加させ、ガタや振動の発生を抑えた密閉形圧縮機を得ることができる。 For example, as shown in FIG. 4, in the sealed container having a plate thickness of 3.2 mm, the convex part 10 in the circumferential direction or the axial direction of the sealed container 1, and the central heating part 14 having a distance L = 6 mm between each other are measured with a TIG welding machine. When heated (welding conditions: 10 V, 200 A, 1.5 sec), the convex portions 10 and 10 contract by about 100 μm in the direction indicated by arrow B due to plastic deformation due to local heating.
As described above, according to the fourth embodiment, after the compression mechanism portion is fixed by pressurizing when the fixing portion provided in the vicinity is pressed as in the third embodiment, the two convex portions of the sealed container 1 are adjacent to each other. It is possible to obtain a hermetic compressor in which the hermetic container 1 is deformed by locally heating the portions 10 and 10, the tightening force between the hermetic container 1 and the compression mechanism 2 is increased, and play and vibration are suppressed. it can.

実施の形態５．
図５はこの発明の実施の形態５による密閉形圧縮機の密閉容器と圧縮機構部の固定に用いる密閉容器の締付け力を増加させるための押付装置を模式的に示す断面図である。図において、６は密閉容器の締付け力を増加させるための機能を備えた押付装置であり、中央部に円柱状で先端部が平らな押付治具３を保持し、図示を省略している駆動源によって矢印Ｃ方向に進退する基体６１と、中央部に押付治具３を挿通する貫通孔６２ａを有し、先端部６２ｂが密閉容器１の外周部１ｂに密着する曲面に形成され、基体６１に突出されたガイド６３によって矢印Ｃと反対方向に移動可能に保持された周囲押付治具６２と、この周囲押付治具６２を基体６１に対して矢印Ｃ方向に付勢する圧縮バネ等の弾性部材６４などを用いて構成されている。なお、押付治具３の先端部は退避状態では、図示のように周囲押付治具６２の先端部よりも後退した位置にある。また、ワークである密閉形圧縮機の密閉容器と圧縮機構部は上記実施の形態１と同様であるので、密閉容器１の一部を除いて図示を省略している。 Embodiment 5 FIG.
FIG. 5 is a cross-sectional view schematically showing a pressing device for increasing the tightening force of the hermetic container used for fixing the hermetic container and the compression mechanism of the hermetic compressor according to the fifth embodiment of the present invention. In the figure, reference numeral 6 denotes a pressing device having a function for increasing the tightening force of the closed container. The driving device holds a pressing jig 3 having a cylindrical shape and a flat tip at the center, and is not shown in the figure. A base 61 that advances and retreats in the direction of arrow C depending on the source and a through hole 62a through which the pressing jig 3 is inserted in the center, and a tip 62b is formed in a curved surface that is in close contact with the outer peripheral portion 1b of the sealed container 1. A peripheral pressing jig 62 held movably in a direction opposite to the arrow C by a guide 63 protruding in the direction of elasticity, and an elastic such as a compression spring that urges the peripheral pressing jig 62 in the direction of arrow C with respect to the base body 61. The member 64 is used. It should be noted that the distal end portion of the pressing jig 3 is in a position retracted from the distal end portion of the surrounding pressing jig 62 in the retracted state as illustrated. Further, since the sealed container and the compression mechanism part of the hermetic compressor which is a workpiece are the same as those in the first embodiment, the illustration is omitted except for a part of the sealed container 1.

次に上記のように構成された実施の形態５の動作について説明する。なお、密閉容器を局所加熱すると冷却後、内部応力開放のために密閉容器が半径方向外側へ広がるため、圧縮機構部の締付け力が低下し、ガタが発生する恐れがあるが、この実施の形態５はそのようなガタを抑制することができるものである。例えば上記実施の形態１と同様に構成された図示を省略している圧縮機構部と密閉容器において、押付部を加熱後、基体６１を矢印Ｃの方向に移動させると、密閉容器１の外周部１ｂにおける押付部の周囲が周囲押付治具６２によって先に押えられる。さらに基体６１を弾性部材６４に抗して矢印Ｃの方向に移動させると、先端が平面形状のハンコ型の押付治具３（かしめ治具）の先端部が外周部１ｂを図示省略している圧縮機構部の凹部の方向に押し付けることで、加熱による半径方向外側の変形を強制的に抑制し、密閉容器１の締付け力を増加させ、圧縮機構部のガタを抑制することができる。   Next, the operation of the fifth embodiment configured as described above will be described. It should be noted that when the hermetic container is locally heated, the hermetic container spreads radially outward to release the internal stress after cooling, so that the tightening force of the compression mechanism portion may be reduced and play may occur. 5 can suppress such play. For example, in a compression mechanism portion and a sealed container that are configured in the same manner as in the first embodiment and are not shown, when the base 61 is moved in the direction of arrow C after heating the pressing portion, the outer peripheral portion of the sealed container 1 The periphery of the pressing portion in 1 b is first pressed by the peripheral pressing jig 62. Further, when the base 61 is moved in the direction of the arrow C against the elastic member 64, the outer peripheral portion 1b is not shown at the front end portion of the pressing jig 3 (caulking jig) having a flat tip shape. By pressing in the direction of the concave portion of the compression mechanism portion, it is possible to forcibly suppress the radially outward deformation due to heating, increase the tightening force of the sealed container 1, and suppress the play of the compression mechanism portion.

このように、実施の形態５によれば、加熱による密閉容器外側への変形を抑制し、密閉容器の締付け力を増加させることで、ガタや振動の発生を抑えた密閉形圧縮機を得ることができる。   As described above, according to the fifth embodiment, it is possible to obtain a hermetic compressor that suppresses the occurrence of backlash and vibration by suppressing deformation to the outside of the hermetic container due to heating and increasing the tightening force of the hermetic container. Can do.

実施の形態６．
図６はこの発明の実施の形態６による密閉形圧縮機の製造装置の要部である密閉容器と圧縮機構部の固定装置を模式的に示す正面図である。図において、７は固定装置であり、加熱源７１と、この加熱源７１を矢印Ｄ方向に進退させる退避機構７２と、押付治具３を密閉形圧縮機であるワーク８に対して矢印Ｅ方向に押し付け、あるいは退避させる加圧機構７３と、ワーク回転機構７４、架台７５などから構成されている。 Embodiment 6 FIG.
FIG. 6 is a front view schematically showing a hermetic container and a fixing device for a compression mechanism, which are the main parts of a hermetic compressor manufacturing apparatus according to Embodiment 6 of the present invention. In the figure, 7 is a fixing device, a heating source 71, a retracting mechanism 72 for moving the heating source 71 back and forth in the direction of arrow D, and the pressing jig 3 in the direction of arrow E with respect to the workpiece 8 which is a hermetic compressor. A pressurizing mechanism 73 that is pressed against or retracted, a work rotating mechanism 74, a gantry 75, and the like.

次に動作について説明する。例えば、固定装置７にて詳細図示を省略している圧縮機構部外周部の凹部を上面にして密閉容器と圧縮機構部を固定する箇所の位置決めを行ってワーク８を固定した後、ＴＩＧ溶接機やバーナ等の加熱源７１により押し付ける箇所の局所加熱を行う。加熱後、押込み量と押込み力を管理できる例えばサーボプレス等からなる加圧機構７３により、圧縮機構部の外周部に設けられた凹部に対向する密閉容器の局所加熱場所を押付治具３により押し込む。１点目の押込み後、ワーク回転機構７４にて次の圧縮機構部の凹部を上面にして固定後、一点目と同様に圧縮機構部を順次固定する。なお、上記加熱源７１と加圧機構７３をワーク８の密閉容器周方向に複数配置させ、同時に複数箇所を加熱・加圧し、圧縮機構部と密閉容器を固定するようにしても良い。さらに、加熱を行うステージと押し付け・加圧を行うステージを周方向にずらせても差し支えない。   Next, the operation will be described. For example, after fixing the work 8 by positioning the location where the sealed container and the compression mechanism portion are fixed with the concave portion of the outer peripheral portion of the compression mechanism portion not shown in detail in the fixing device 7 as the upper surface, the TIG welding machine A portion to be pressed by a heating source 71 such as a burner or the like is locally heated. After heating, a pressing mechanism 73 that can control the pressing amount and pressing force, for example, a servo press or the like, presses the local heating place of the sealed container facing the concave portion provided in the outer peripheral portion of the compression mechanism portion with the pressing jig 3. . After pressing the first point, the workpiece rotating mechanism 74 fixes the concave portion of the next compression mechanism portion on the upper surface, and then sequentially fixes the compression mechanism portion similarly to the first point. Note that a plurality of the heating sources 71 and the pressurizing mechanisms 73 may be arranged in the circumferential direction of the closed container of the workpiece 8, and a plurality of locations may be simultaneously heated and pressurized to fix the compression mechanism unit and the closed container. Further, the stage for heating and the stage for pressing / pressing may be shifted in the circumferential direction.

上記のように構成された実施の形態６においては、例えば加熱部の温度を検知する温度センサ（図示省略）などを用い、加熱源７１への供給エネルギーや加熱時間などを制御してワークの加熱温度を制御し、加圧機構７３としてサーボプレスなどを用いることにより固定部の固定品質が安定した密閉形圧縮機を得ることができる。また、図示を省略しているワークの搬送機構、搬送されたワークを固定装置７に対して移動させるハンドリング機構などを装置することにより、自動化することも容易である。   In the sixth embodiment configured as described above, for example, a temperature sensor (not shown) that detects the temperature of the heating unit is used to control the energy supplied to the heating source 71, the heating time, and the like to heat the workpiece. By controlling the temperature and using a servo press or the like as the pressurizing mechanism 73, a hermetic compressor in which the fixing quality of the fixing portion is stable can be obtained. It is also easy to automate by installing a workpiece transport mechanism (not shown), a handling mechanism for moving the transported workpiece with respect to the fixing device 7, and the like.

この発明の実施の形態１による密閉形圧縮機、及び密閉形圧縮機の密閉容器と圧縮機構部の固定方法の要部を概略的に示す断面図である。It is sectional drawing which shows roughly the principal part of the fixing method of the airtight compressor by Embodiment 1 of this invention, and the airtight container of a airtight compressor, and a compression mechanism part. 図１に示す固定部の構造、及び固定方法を示す要部断面図である。It is principal part sectional drawing which shows the structure of the fixing | fixed part shown in FIG. 1, and the fixing method. この発明の実施の形態３による密閉形圧縮機、及びその密閉容器と圧縮機構部の固定方法を模式的に示す要部断面図であり、（ａ）は押し付け前の加熱位置を示す図、（ｂ）は凹所形成後の冷却収縮による締付けを説明する図である。It is principal part sectional drawing which shows typically the sealing type compressor by Embodiment 3 of this invention, and the fixing method of the airtight container and a compression mechanism part, (a) is a figure which shows the heating position before pressing, ( b) is a diagram illustrating tightening by cooling shrinkage after the formation of the recess. この発明の実施の形態４による密閉形圧縮機における密閉容器と圧縮機構部の固定方法の要部を示す断面図である。It is sectional drawing which shows the principal part of the fixing method of the airtight container and compression mechanism part in the airtight compressor by Embodiment 4 of this invention. この発明の実施の形態５による密閉形圧縮機の密閉容器と圧縮機構部の固定に用いる密閉容器の締付け力を増加させるための装置を模式的に示す断面図である。It is sectional drawing which shows typically the apparatus for increasing the clamping force of the airtight container used for fixation of the airtight container and compression mechanism part of the airtight compressor by Embodiment 5 of this invention. この発明の実施の形態６による密閉形圧縮機の製造装置の要部である密閉容器と圧縮機構部の固定装置を模式的に示す正面図である。 It is a front view which shows typically the fixing device of the airtight container and compression mechanism part which are the principal parts of the manufacturing apparatus of the airtight compressor by Embodiment 6 of this invention.

符号の説明Explanation of symbols

１ 密閉容器、 １ａ 内周部、 １０ 凸部、 １１ 密閉容器（上）、 １２ 密閉容器（下）、 １３ 凹所（押付部）、 １４ 加熱部、 ２ 圧縮機構部、 ２１ 外周部、 ２２ 凹部、 ２２ａ 底部、 ２３ 吸入管、 ３ 押付治具、 ４ 固定部、 ５ 電動機部、 ５１ ロータ、 ５２ クランクシャフト、 ５３ ステータ、 ６ 押付装置、 ６１ 基体、 ６２ 周囲押付治具、 ６２ａ 貫通孔、 ６２ｂ 先端部、 ６３ ガイド、 ６４ 弾性部材、 ７ 固定装置、 ７１ 加熱源、 ７２ 退避機構、 ７３ 加圧機構、 ７４ ワーク回転機構、 ７５ 架台、８ ワーク。   DESCRIPTION OF SYMBOLS 1 Airtight container, 1a Inner peripheral part, 10 Convex part, 11 Airtight container (upper), 12 Airtight container (lower), 13 Recessed part (pressing part), 14 Heating part, 2 Compression mechanism part, 21 Outer peripheral part, 22 Recessed part 22a bottom part, 23 suction pipe, 3 pressing jig, 4 fixing part, 5 motor part, 51 rotor, 52 crankshaft, 53 stator, 6 pressing device, 61 base, 62 peripheral pressing jig, 62a through hole, 62b tip Part, 63 guide, 64 elastic member, 7 fixing device, 71 heating source, 72 retracting mechanism, 73 pressurizing mechanism, 74 work rotating mechanism, 75 mount, 8 work.

Claims (7)

密閉容器内に圧縮機構部が収納された密閉形圧縮機において、上記圧縮機構部は、上記密閉容器の内周部に対向する外周部に凹部が形成されてなり、上記密閉容器は、該圧縮機構部の凹部に対応する部分が外側から該凹部の底部の方向に押し付けられてせん断された状態で該凹部内に進入され、上記密閉容器の外周部に該圧縮機構部の凹部と略同様の押付治具による凹所が形成されてなり、これら圧縮機構部の凹部及び密閉容器の押付部により、上記密閉容器と圧縮機構部相互の固定部が形成されてなるものであって、上記固定部は、上記圧縮機構部の外周部に互いに近接して設けられた複数の凹部を用いて形成されてなり、かつ該固定部を周方向に１箇所以上設けてなることを特徴とする密閉形圧縮機。 In the hermetic compressor in which the compression mechanism portion is housed in the hermetic container, the compression mechanism portion has a recess formed in an outer peripheral portion facing the inner peripheral portion of the hermetic container. The portion corresponding to the concave portion of the mechanism portion is pressed from the outside toward the bottom portion of the concave portion and is sheared and enters the concave portion, and is substantially the same as the concave portion of the compression mechanism portion on the outer peripheral portion of the sealed container. A recessed portion is formed by a pressing jig, and the fixing portion between the sealed container and the compression mechanism portion is formed by the recessed portion of the compression mechanism portion and the pressing portion of the sealed container. is tightly closed form you characterized by being provided above close to each other on the outer peripheral portion of the compression mechanism portion to be formed becomes by using a plurality of recesses provided, and more than one location the fixing portion in the circumferential direction Compressor. 上記固定部外周部に形成された凹部が加熱されたものであることを特徴とする請求項１に記載の密閉形圧縮機。 2. The hermetic compressor according to claim 1 , wherein the concave portion formed in the outer peripheral portion of the fixed portion is heated. 上記圧縮機構部外周部に近接して設けられた凹部間が加熱されたものであることを特徴とする請求項１または請求項２に記載の密閉形圧縮機。 The hermetic compressor according to claim 1 or 2 , wherein a space between the concave portions provided close to the outer peripheral portion of the compression mechanism portion is heated. 密閉形圧縮機における密閉容器とこの密閉容器内に収納された圧縮機構部の固定方法において、上記密閉容器の内周部に対向する上記圧縮機構部の外周部に凹部を形成して、上記密閉容器内に収容した後、上記凹部と略同一寸法もしくはわずかに小さい押付治具を用いて、該密閉容器の外側から上記圧縮機構部の凹部に対応する部分を該凹部の底部の方向に押し付けて、該密閉容器をせん断させた状態で上記凹部内に進入させることにより、上記密閉容器と圧縮機構部とを固定するとともに、上記圧縮機構部の凹部を複数近接させて設け、上記押付治具を用いて上記密閉容器を押し付けた後、近接させた押付部相互の密閉容器中央部を加熱するようにしたことを特徴とする密閉形圧縮機の密閉容器と圧縮機構部との固定方法。 In the method for fixing the sealed container and the compression mechanism housed in the sealed container in the hermetic compressor, a recess is formed in the outer peripheral part of the compression mechanism part facing the inner peripheral part of the sealed container, and the sealed After being accommodated in the container, the part corresponding to the concave part of the compression mechanism part is pressed from the outside of the hermetic container toward the bottom part of the concave part by using a pressing jig that is substantially the same size or slightly smaller than the concave part. The sealed container and the compression mechanism section are fixed by entering the sealed container in a state where the sealed container is sheared, and a plurality of the recess sections of the compression mechanism section are provided close to each other, and the pressing jig is provided. after pressing the sealed vessel using a fixed method of the closed container and the compression mechanism portion of the dense-closed compressor characterized in that so as to heat the sealed container central portion of the pressing portion mutually brought close. 上記押付治具を用いて上記密閉容器を押し付ける前に、上記密閉容器の上記圧縮機構部の凹部に対応する部分を加熱するようにしたことを特徴とする請求項４に記載の密閉形圧縮機の密閉容器と圧縮機構部との固定方法。 5. The hermetic compressor according to claim 4 , wherein a portion corresponding to the concave portion of the compression mechanism portion of the hermetic container is heated before the hermetic container is pressed using the pressing jig. Fixing method of hermetic container and compression mechanism. 上記圧縮機構部の凹部を複数近接させて設け、近接させた凹部間直上の密閉容器を加熱した後、上記押付治具を用いて、上記圧縮機構部凹部直上の密閉容器の隣接箇所を同時に押し付けたことを特徴とする請求項４に記載の密閉形圧縮機の密閉容器と圧縮機構部との固定方法。 A plurality of concave portions of the compression mechanism portion are provided close to each other, and after heating the sealed container immediately above the adjacent concave portions, the adjacent portion of the sealed container immediately above the concave portion of the compression mechanism portion is simultaneously pressed using the pressing jig. The fixing method of the airtight container and compression mechanism part of the airtight compressor of Claim 4 characterized by the above-mentioned. 上記押付治具を用いて上記密閉容器を押し付ける前に、上記密閉容器の外側から固定部周囲を押さえ、かかる状態を保持して上記押付治具による押し付けを行うようにしたことを特徴とする請求項４に記載の密閉形圧縮機の密閉容器と圧縮機構部との固定方法。 Before pressing the sealed container using the pressing jig, the periphery of the fixed portion is pressed from the outside of the sealed container, and the pressing by the pressing jig is performed while maintaining this state. Item 5. A method for fixing a sealed container and a compression mechanism of a hermetic compressor according to Item 4 .
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