JP4360622B2 - Manufacturing method of scroll compressor - Google Patents

Manufacturing method of scroll compressor Download PDF

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JP4360622B2
JP4360622B2 JP2004043924A JP2004043924A JP4360622B2 JP 4360622 B2 JP4360622 B2 JP 4360622B2 JP 2004043924 A JP2004043924 A JP 2004043924A JP 2004043924 A JP2004043924 A JP 2004043924A JP 4360622 B2 JP4360622 B2 JP 4360622B2
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scroll member
orbiting scroll
end plate
orbiting
tooth
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JP2005233095A (en
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俊典 安則
睦憲 松永
中村  聡
優 太田原
修士 長谷川
義信 除補
豪 土屋
裕一 柳瀬
義武 青木
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Hitachi Appliances Inc
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Description

本発明は、スクロール圧縮機の製作方法に関する。 The present invention relates to a method of fabricating a scroll compressor.

高温、高圧下で使用されるスクロール圧縮機では、旋回スクロール部材及び固定スクロール部材の中央部が圧縮機運転中の熱膨張や圧力による変形によって接触することが知られている。   In a scroll compressor used under high temperature and high pressure, it is known that the center part of the orbiting scroll member and the fixed scroll member are in contact with each other by deformation due to thermal expansion or pressure during compressor operation.

これを緩和する方法として特開平6−317269号公報(特許文献1)や特開平5−26186号公報(特許文献2)に示されたものがある。特許文献1では、圧縮機運転中の熱や圧力による旋回スクロール部材及び固定スクロール部材の変形量と同等量の微小段差を予め旋回スクロール部材もしくは固定スクロール部材、またはその両方の歯先面もしくは歯底面に設けることにより、圧縮機運転中の軸方向隙間を低減するようにしている。また、特許文献2では、旋回スクロール部材の歯先面のラップ中心部の高さを外周ラップ部より数十μm低くなる様なテーパー状のラップ高さとし、旋回スクロール部材のラップ部と鏡板部とに馴染層を均一に付着させることにより圧縮機運転中の軸方向隙間を低減するようにしている。   As methods for alleviating this, there are methods disclosed in JP-A-6-317269 (Patent Document 1) and JP-A-5-26186 (Patent Document 2). In Patent Document 1, a minute step equivalent to the amount of deformation of the orbiting scroll member and the fixed scroll member due to heat and pressure during the operation of the compressor is preliminarily determined in the orbiting scroll surface and / or the fixed scroll member, or the tooth tip surface or the tooth bottom surface of both. By providing it, the axial clearance during compressor operation is reduced. Further, in Patent Document 2, the height of the lap center portion of the tooth tip surface of the orbiting scroll member is set to a taper lap height that is several tens of μm lower than the outer peripheral wrap portion, and the wrap portion and end plate portion of the orbiting scroll member By uniformly attaching the familiar layer to the shaft, the axial clearance during the operation of the compressor is reduced.

特開平6−317269号公報(図2)JP-A-6-317269 (FIG. 2)

特開平5−26186号公報(図5)Japanese Patent Laid-Open No. 5-26186 (FIG. 5)

前記特許文献1では、旋回スクロール部材及び固定スクロール部材の中央部の変形に対する接触を緩和するために両者の隙間を大きくしているが、圧縮機運転中に外周側の隙間が大きい状態のままであり、その部分からの漏れによる性能低下を招くという問題があった。   In Patent Document 1, the clearance between both the orbiting scroll member and the fixed scroll member is increased in order to alleviate contact with the deformation of the central portion, but the outer peripheral clearance remains large during compressor operation. There is a problem that the performance is reduced due to leakage from the portion.

また、前記特許文献2では、旋回スクロール部材の歯先面のラップ中心部の高さを外周ラップ部より数十μm低くなる様なテーパー状のラップ高さとする仕上げ加工が極めて困難で加工時間が長くなり、製作コストが高くなるという問題があった。なお、特許文献2において、加工を容易にするために、複数の微小段差を設けてテーパー状に形成することが考えられるが、微小段差部に階段状の微小隙間が残るので、この微小隙間を通しての漏れによる性能低下を招くという課題が生じる。   Further, in Patent Document 2, it is extremely difficult to finish the tape by making the height of the lap center portion of the tooth tip surface of the orbiting scroll member lower by several tens of μm than the outer lap portion, and the processing time is extremely difficult. There was a problem that the manufacturing cost was increased due to the lengthening. In Patent Document 2, it is conceivable to provide a plurality of minute steps to form a taper in order to facilitate processing. However, since a step-like minute gap remains in the minute step portion, There arises a problem that the performance is reduced due to leakage.

本発明の目的は、性能向上と製造コスト低減を両立できるスクロール圧縮機およびその製作方法を得ることにある。   An object of the present invention is to obtain a scroll compressor and a method for manufacturing the same that can achieve both improvement in performance and reduction in manufacturing cost.

前記目的を達成するために、本発明は、鏡板とそれに立設するインボリュート曲線あるいはそれに類似した曲線からなるラップを備える固定スクロールと旋回スクロール部材とを互いに組合せ、前記旋回スクロール部材を旋回運動させることにより作動流体の圧縮を行うスクロール圧縮機の製作方法において、前記固定スクロールまたは前記旋回スクロール部材の中央部を突出するように反ラップ側から加圧し変形させた状態でその歯底面または歯先面を平坦に仕上げ加工した後に、加圧し変形させた状態を解除することにより前記歯底面または前記歯先面を曲線状のすり鉢形状にしたことにある。   In order to achieve the above object, the present invention provides a fixed scroll having an end plate and an involute curve erected on the end plate or a curved line similar thereto, and a turning scroll member combined with each other, and orbiting the turning scroll member. In the method of manufacturing the scroll compressor that compresses the working fluid by the pressure, the tooth bottom surface or the tooth tip surface is pressed and deformed from the side opposite to the wrap so as to project the center portion of the fixed scroll or the orbiting scroll member. After the finish is flattened, the pressed surface and the deformed state are released to form the tooth bottom surface or the tooth tip surface in a curved mortar shape.

係る本発明のより好ましい具体例は次の通りである。
(1)前記歯底面または前記歯先面を平坦に仕上げ加工する部分を中央部に限定したこと。
More preferred specific examples of the present invention are as follows.
(1) The portion where the tooth bottom surface or the tooth tip surface is finished flat is limited to the central portion.

本発明によれば、性能向上と製造コスト低減を両立できるスクロール圧縮機およびその製作方法を得ることができる。   ADVANTAGE OF THE INVENTION According to this invention, the scroll compressor which can achieve performance improvement and manufacturing cost reduction, and its manufacturing method can be obtained.

以下、参考例及び本発明の複数の実施例について図を用いて説明する。参考例及び各実施例の図における同一符号は同一物または相当物を示す。なお、本発明は、実施例に開示した形態に限られるものではなく、公知技術などに基づく変更を許容するものである。 Hereinafter, reference examples and a plurality of embodiments of the present invention will be described with reference to the drawings. The same reference numerals in the drawings of the reference examples and the respective embodiments indicate the same or equivalent. In addition, this invention is not restricted to the form disclosed in the Example, The change based on a well-known technique etc. is accept | permitted.

参考例を図1から図7を用いて説明する。 A reference example will be described with reference to FIGS.

参考例のスクロール圧縮機の全体に関して図1を参照しながら説明する。図1は参考例のスクロール圧縮機の縦断面図である。なお、この参考例のスクロール圧縮機の全体構成に関しては、後述する第実施例及び第実施例においても同様である。 The entire scroll compressor of the reference example will be described with reference to FIG. FIG. 1 is a longitudinal sectional view of a scroll compressor of a reference example . The overall configuration of the scroll compressor of this reference example is the same in the first and second embodiments described later.

密閉形スクロール圧縮機50は、旋回スクロール部材1と固定スクロール部材16より形成される圧縮機構部60と、圧縮機構部60を支持するフレーム17及び旋回スクロール部材1の自転を防止するオルダムリング14と、旋回スクロール部材1に取付けられた回転軸13と、回転軸に取付けられた電動機回転子20及び電動機固定子21よりなる電動機部70と、を備えて構成されている。電動機部70には、電源端子22を通して電力が供給される。   The hermetic scroll compressor 50 includes a compression mechanism 60 formed by the orbiting scroll member 1 and the fixed scroll member 16, a frame 17 that supports the compression mechanism 60, and an Oldham ring 14 that prevents the orbiting scroll member 1 from rotating. The rotating shaft 13 attached to the orbiting scroll member 1 and the electric motor unit 70 including the electric motor rotor 20 and the electric motor stator 21 attached to the rotating shaft are configured. Electric power is supplied to the electric motor unit 70 through the power supply terminal 22.

旋回スクロール部材1は、円盤状の鏡板5と、この鏡板5に立設するインボリュート曲線あるいはそれに類似した曲線からなるラップ3と、鏡板5の反ラップ側に立設された円筒状のボス部6とを備えて構成されている。固定スクロール部材16は、円盤状の鏡板26と、この鏡板26に立設するインボリュート曲線あるいはそれに類似した曲線からなるラップ27とを備えて構成されている。   The orbiting scroll member 1 includes a disc-shaped end plate 5, a wrap 3 made up of an involute curve standing on the end plate 5 or a curve similar thereto, and a cylindrical boss portion 6 standing on the side opposite to the end plate 5. And is configured. The fixed scroll member 16 includes a disk-shaped end plate 26 and a wrap 27 formed of an involute curve standing on the end plate 26 or a curve similar thereto.

かかる構成において、吸入パイプ18より吸入された冷媒ガスは、圧縮機構部60で圧縮され吐出空間25に吐出される。吐出空間内の高圧冷媒ガスはフレーム17のガス通路を経て耐圧力容器11の下方部に移動し、電動機部70を冷却した後に吐出パイプ19より圧縮機外部へ吐出される。一方、油溜め24内の冷凍機油は、圧縮機構部60と油溜めの圧力差と回転軸13の回転による遠心力とによって給油パイプ23より圧縮機構部60に吸い上げられ、各摺動部を潤滑するとともに冷却し、また旋回スクロール部材1と固定スクロール部材16の歯先面の隙間およびスクロールラップ側面の隙間をシールし、圧縮された冷媒ガスと共に吐出空間25に吐出される。   In such a configuration, the refrigerant gas sucked from the suction pipe 18 is compressed by the compression mechanism 60 and discharged to the discharge space 25. The high-pressure refrigerant gas in the discharge space moves to the lower part of the pressure-resistant container 11 through the gas passage of the frame 17, cools the electric motor unit 70, and is discharged from the discharge pipe 19 to the outside of the compressor. On the other hand, the refrigerating machine oil in the oil sump 24 is sucked up to the compression mechanism part 60 from the oil supply pipe 23 by the pressure difference between the compression mechanism part 60 and the oil sump and the centrifugal force due to the rotation of the rotary shaft 13, and lubricates each sliding part. In addition, the cooling is performed, and the clearance between the tooth tip surfaces of the orbiting scroll member 1 and the fixed scroll member 16 and the clearance between the side surfaces of the scroll wrap are sealed and discharged together with the compressed refrigerant gas into the discharge space 25.

次に、旋回スクロール部材1の具体的構造に関して図2を参照しながら説明する。図2は図1のスクロール圧縮機に用いる旋回スクロール部材1の断面図である。   Next, the specific structure of the orbiting scroll member 1 will be described with reference to FIG. FIG. 2 is a sectional view of the orbiting scroll member 1 used in the scroll compressor of FIG.

旋回スクロール部材1の鏡板5は、ラップ間の歯底面5aと、外周部の鏡板面5bとを有している。ラップ3はその先端に歯先面3aを有している。歯底面5a、鏡板面5b及び歯先面3aはそれぞれ仕上げ加工されている。   The end plate 5 of the orbiting scroll member 1 has a bottom surface 5a between the wraps and an end plate surface 5b at the outer periphery. The wrap 3 has a tooth tip surface 3a at its tip. The tooth bottom surface 5a, the end plate surface 5b, and the tooth tip surface 3a are each finished.

ボス部6は鏡板5の一側の中央部に設けられている。ボス部6の凹部6a内には、円筒状の滑り軸受2が圧入されている。この滑り軸受2は円筒状軸受を構成するものであり、滑り軸受2の代わりにころ軸受などが用いられてもよい。ボス部6内に滑り軸受2が圧入されることによって、ボス部6が拡大されると共に、鏡板5の中央部が彎曲され、歯底面5a及び歯先面3aの中央部が曲線状のすり鉢形状に変形された状態となる。この状態で、歯先面3aにおける外周部と中央部との高さの差がδである。 The boss 6 is provided at the central portion on one side of the end plate 5. A cylindrical sliding bearing 2 is press-fitted into the recess 6 a of the boss 6. The sliding bearing 2 constitutes a cylindrical bearing, and a roller bearing or the like may be used instead of the sliding bearing 2. When the sliding bearing 2 is press-fitted into the boss portion 6, the boss portion 6 is enlarged, the center portion of the end plate 5 is bent, and the center portions of the tooth bottom surface 5a and the tooth tip surface 3a are curved mortar shapes. It will be in the state transformed into. In this state, the difference in height between the outer peripheral portion and the central portion of the tooth top surface 3a is [delta] 1.

次に、旋回スクロール部材1の製作方法に関して図2及び図3を参照しながら説明する。図3は図2の旋回スクロール部材1に滑り軸受2を圧入する直前の製作工程を示す断面図である。   Next, a method for manufacturing the orbiting scroll member 1 will be described with reference to FIGS. FIG. 3 is a cross-sectional view showing a manufacturing process immediately before the sliding bearing 2 is press-fitted into the orbiting scroll member 1 of FIG.

旋回スクロール部材1に滑り軸受2を圧入する前に、旋回スクロール部材1のスクロールラップ3の歯先面3a、鏡板5の鏡板面5a及び歯底面5bを仕上げ加工する。この仕上げ加工は、平面仕上げ加工によるため、極めて容易に早くしかも精密に仕上げ加工できる。   Before the sliding bearing 2 is press-fitted into the orbiting scroll member 1, the tooth tip surface 3a of the scroll wrap 3 of the orbiting scroll member 1, the end plate surface 5a and the bottom surface 5b of the end plate 5 are finished. Since this finishing process is a flat finishing process, it can be finished very easily and precisely.

かかる仕上げ加工された旋回スクロール部材1を図3に示すように鏡板面5bが受け面となるように治具7に設置する。この状態で、旋回スクロール部材1のラップ3は治具7の凹部7a内に収納される。歯先面3aと凹部7aの底面と間には若干の隙間が形成されている。次いで、プレス等を用いてすべり軸受2を上方からボス部6内に圧入することにより、ボス部6を外側に拡開する。これによって、鏡板面5bの変形を抑えつつ、図2に示すように歯底面5a及び歯先面3aを曲線状のすり鉢形状に変形させた状態とすることができる。   The finished orbiting scroll member 1 is placed on the jig 7 so that the end plate surface 5b becomes a receiving surface as shown in FIG. In this state, the wrap 3 of the orbiting scroll member 1 is stored in the recess 7 a of the jig 7. A slight gap is formed between the tooth tip surface 3a and the bottom surface of the recess 7a. Next, the boss 6 is expanded outward by press-fitting the slide bearing 2 into the boss 6 from above using a press or the like. As a result, the bottom surface 5a and the top surface 3a can be deformed into a curved mortar shape as shown in FIG. 2 while suppressing deformation of the end plate surface 5b.

参考例によれば、圧縮機運転中の圧力や熱などにより旋回スクロール部材1及び固定スクロール部材16が変形した際に、固定スクロール部材16に対する旋回スクロール部材1の歯先面3a及び歯底面5aの隙間を小さくして、漏れ損失を抑えることができるので、高効率を得ることが出来る。 According to the reference example, when the orbiting scroll member 1 and the fixed scroll member 16 are deformed by pressure or heat during operation of the compressor, the tooth tip surface 3a and the tooth bottom surface 5a of the orbiting scroll member 1 with respect to the fixed scroll member 16 are deformed. Since the gap can be reduced and leakage loss can be suppressed, high efficiency can be obtained.

次に、旋回スクロール部材1の変形に関して図4から図6を参照しながら説明する。図4は図2の旋回スクロール部材1及び滑り軸受2の寸法を説明するための断面図、図5は図2の旋回スクロール部材1のデータ位置を説明するための平面図、図6はデータ位置に対する歯底面5aの変位を示す図である。   Next, deformation of the orbiting scroll member 1 will be described with reference to FIGS. 4 is a cross-sectional view for explaining the dimensions of the orbiting scroll member 1 and the sliding bearing 2 in FIG. 2, FIG. 5 is a plan view for explaining the data position of the orbiting scroll member 1 in FIG. 2, and FIG. It is a figure which shows the displacement of the tooth base 5a with respect to.

旋回スクロール部材1の各部の寸法は、図4に示すように、ボス部6の肉厚をTとし、ボス部6の凹部6aの底面と鏡板面5aとの間の鏡板5の肉厚をtとし、ボス部6の凹部6aの直径をdとする。また、滑り軸受2の筒部の外径をdとし、その筒部の長さ寸法をLとする。さらには、スクロールラップ3の巻始め部9から巻終り部10までの歯底面4および歯先面3aおよび歯底面5aの各データ位置を図5に示すように位置1〜11とする。 As shown in FIG. 4, the dimension of each part of the orbiting scroll member 1 is such that the thickness of the boss portion 6 is T, and the thickness of the end plate 5 between the bottom surface of the recess 6a of the boss portion 6 and the end plate surface 5a is t. and then, the diameter of the recess 6a of the boss portion 6 and d 1. Further, the outer diameter of the cylindrical portion of the sliding bearing 2 and d 1, the length of the cylindrical portion and the L. Furthermore, the data positions of the tooth bottom surface 4, the tooth tip surface 3a, and the tooth bottom surface 5a from the winding start portion 9 to the winding end portion 10 of the scroll wrap 3 are set to positions 1 to 11 as shown in FIG.

図2に示す状態の旋回スクロール部材1の各データ位置1〜11における歯底面5aの変位は、図6の点線で示すように、曲線状に滑らかになっている。換言すれば、旋回スクロール部材1の歯底面5aは曲線状の滑らかなすり鉢形状となっている。この変形量は、巻始め部9側が大きく、巻終り部10側が小さい傾向となっている。また、旋回スクロール部材1の歯先面3bも同様に曲線状の滑らかなすり鉢形状となっている。なお、従来技術の欄で説明した複数の微小段差を設けてテーパー状に形成する例は、図6の実線で示す通り変位するものである。   The displacement of the tooth bottom surface 5a at each of the data positions 1 to 11 of the orbiting scroll member 1 in the state shown in FIG. 2 is smooth in a curved shape as indicated by the dotted line in FIG. In other words, the tooth bottom surface 5a of the orbiting scroll member 1 has a curved mortar shape. The amount of deformation tends to be large on the winding start portion 9 side and small on the winding end portion 10 side. Similarly, the tooth tip surface 3b of the orbiting scroll member 1 has a curved mortar shape. The example in which a plurality of minute steps are provided in the prior art column and formed into a tapered shape is displaced as shown by the solid line in FIG.

図6から明らかなように、参考例の旋回スクロール部材1は、微小段差を有する実線で示すものに比較して、滑らかに変化しているので、圧縮機運転時における固定スクロール部材16の歯先面及び歯底面との隙間をより少なくすることができ、漏れをさらに低減して性能向上を図ることができる。 As is clear from FIG. 6, the orbiting scroll member 1 of the reference example changes smoothly as compared with that indicated by the solid line having a minute step, so that the tooth tip of the fixed scroll member 16 during the compressor operation The gap between the surface and the tooth bottom can be further reduced, and leakage can be further reduced to improve performance.

次に、旋回スクロール部材1の変形量の調整方法に関して図7を参照しながら説明する。図7は旋回スクロール部材1の各部を変更した場合におけるデータ位置に対する歯先面3a及び歯底面5aの変位を示す図である。   Next, a method for adjusting the deformation amount of the orbiting scroll member 1 will be described with reference to FIG. FIG. 7 is a diagram showing the displacement of the tooth tip surface 3a and the tooth bottom surface 5a with respect to the data position when each part of the orbiting scroll member 1 is changed.

参考例では、旋回スクロール部材1にすべり軸受2を圧入することによる変形量δは、圧縮機運転中の固定スクロール部材16の変形量及び旋回スクロール部材1の変形量の合計と同等になるように設定することで、圧縮機運転時の旋回スクロール部材1と固定スクロール部材16の接触を緩和し、軸方向隙間を小さくすることが可能である。 In the reference example , the deformation amount δ 1 caused by press-fitting the sliding bearing 2 into the orbiting scroll member 1 is equal to the sum of the deformation amount of the fixed scroll member 16 and the deformation amount of the orbiting scroll member 1 during the compressor operation. By setting to, the contact between the orbiting scroll member 1 and the fixed scroll member 16 during operation of the compressor can be relaxed, and the axial gap can be reduced.

旋回スクロール部材1の歯底面5a及び歯先面3aの変形量δは、すべり軸受2の圧入代Δ(=d−d)、旋回スクロール部材1のボス部6の肉厚T、旋回スクロール部材1の鏡板5の中央部厚さt、旋回スクロール部材1の材質、すべり軸受の材質、すべり軸受圧入時の圧入圧力および圧入速度などの制御パラメータの設定により任意に設定できる。 Root surface 5a and deformation amount [delta] 1 of the tip face 3a of the orbiting scroll member 1 is press-fit allowance of the sliding bearing 2 Δ (= d 1 -d 2 ), the thickness T of the boss 6 of the orbiting scroll member 1, the turning The thickness can be arbitrarily set by setting control parameters such as the thickness t of the end plate 5 of the scroll member 1, the material of the orbiting scroll member 1, the material of the slide bearing, the press-fitting pressure and the press-fitting speed at the time of press-fitting the slide bearing.

これら制御パラメータのうち、すべり軸受2の圧入代Δ、旋回スクロール部材1のボス部6の肉厚T、及び旋回スクロール部材1の鏡板5の中央部厚さtと、旋回スクロール部材1の変形量δとの関係は、簡単なモデルでシミュレーションすることが可能である。そこで、かかるシミュレーションを行なったところ、旋回スクロール部材1の歯底面5a及び歯先面3aの変形量δの設定は、すべり軸受2の圧入代Δによることが良いことが判明した。 Among these control parameters, the pressure allowance Δ of the sliding bearing 2, the thickness T of the boss portion 6 of the orbiting scroll member 1, the thickness t of the center portion 5 of the end plate 5 of the orbiting scroll member 1, and the deformation amount of the orbiting scroll member 1. The relationship with δ 1 can be simulated with a simple model. Thus, when such a simulation was performed, it was found that the setting of the deformation amount δ 1 of the tooth bottom surface 5 a and the tooth tip surface 3 a of the orbiting scroll member 1 is preferably based on the press-fit allowance Δ of the slide bearing 2.

図7(a)にすべり軸受2の圧入代Δと変形量δとの関係を示す。すべり軸受2の圧入代Δを0.25Δ〜2Δの範囲で変化させたとき、図7(a)に示すように、圧入代Δと変形量δとはほぼ比例関係に変化すると共に、大きな変形量δが得られるので、所望の変形量δを得ることは比較的容易である。 FIG. 7A shows the relationship between the press-fit allowance Δ and the deformation amount δ 1 of the slide bearing 2. When the press-fit allowance Δ of the slide bearing 2 is changed in the range of 0.25Δ to 2Δ, as shown in FIG. 7A, the press-fit allowance Δ and the deformation amount δ 1 change in a substantially proportional relationship and are large. Since the deformation amount δ 1 is obtained, it is relatively easy to obtain the desired deformation amount δ 1 .

図7(b)に旋回スクロール部材1のボス部6の肉厚Tと変形量δとの関係を示す。ボス部6の肉厚Tを0.5T〜2Tの間で変化させたとき、肉厚Tが薄くなるほど変形量δは大きくなるが、ボス部6の肉厚Tの変化量に対する変形量δの変化量は比較的小さく、また、肉厚Tが薄くなるとボス部6の剛性が弱くなるという欠点がある。 FIG. 7B shows the relationship between the thickness T of the boss portion 6 of the orbiting scroll member 1 and the deformation amount δ 1 . When the thickness T of the boss portion 6 is changed between 0.5T and 2T, the deformation amount δ 1 increases as the thickness T decreases, but the deformation amount δ with respect to the change amount of the thickness T of the boss portion 6. 1 has a disadvantage that the amount of change is relatively small and the rigidity of the boss portion 6 becomes weaker as the wall thickness T becomes smaller.

図7(c)に旋回スクロール部材1の鏡板5の中央部の厚さtと変形量δとの関係を示す。鏡板5の中央部の厚さtを0.5t〜2tの範囲で変化させたとき、厚さtが薄くなるほど変形量δは大きくなるが、鏡板5の中央部厚さtの変化量に対する変形量δの変化量は比較的小さく、また、厚さtが薄くなると鏡板5の剛性が弱くなるという欠点がある。 FIG. 7C shows the relationship between the thickness t of the center portion of the end plate 5 of the orbiting scroll member 1 and the deformation amount δ 1 . When the thickness t of the center portion of the end plate 5 is changed in the range of 0.5 t to 2 t, the amount of deformation δ 1 increases as the thickness t decreases, but with respect to the change amount of the center portion thickness t of the end plate 5. The amount of change of the deformation amount δ 1 is relatively small, and the rigidity of the end plate 5 is weakened as the thickness t is reduced.

なお、旋回スクロール部材1の材質、すべり軸受2の材質、すべり軸受2の圧入時の圧入圧力および圧入速度などのパラメータは、すべり軸受2の圧入代Δ、旋回スクロール部材1のボス部肉厚T、鏡板厚さtと直接関係するため、変形量δを制御するにはこれらと共に制御することが好ましい。 The parameters such as the material of the orbiting scroll member 1, the material of the slide bearing 2, the press-fitting pressure and the press-fitting speed at the time of press-fitting of the slide bearing 2 are the press-fitting allowance Δ of the slide bearing 2, and the boss thickness T Since it is directly related to the end plate thickness t, it is preferable to control the deformation amount δ 1 together with these.

次に、本発明の第実施例を図8を用いて説明する。図8は本発明の第実施例のスクロール圧縮機に用いる固定スクロール部材16の製作方法を示す図である。なお、第実施例の説明において、参考例と共通するスクロール圧縮機の全体構造に関する重複する説明は省略する。 Next, a first embodiment of the present invention will be described with reference to FIG. FIG. 8 is a view showing a method of manufacturing the fixed scroll member 16 used in the scroll compressor according to the first embodiment of the present invention. In the description of the first embodiment, the overlapping description regarding the overall structure of the scroll compressor common to the reference example is omitted.

この第実施例では、固定スクロール部材16を精密仕上げ加工する際に、図8(a)に示すように、固定スクロール部材16の背面側より加圧し、固定スクロール部材16の中央部が変形量δだけ突出するように変形した状態とする。この状態で、固定スクロール部材16のスクロールラップ27の歯先面27a、鏡板26の歯底面26a及び鏡板面26bを仕上げ加工する。この仕上げ加工は、平面仕上げ加工によるため、極めて容易に早くしかも精密に仕上げ加工できる。 In the first embodiment, when the fixed scroll member 16 is precision finished, as shown in FIG. 8A, pressure is applied from the back side of the fixed scroll member 16, and the center portion of the fixed scroll member 16 is deformed. the deformed state so as to protrude by [delta] 2. In this state, the tooth tip surface 27a of the scroll wrap 27 of the fixed scroll member 16, the tooth bottom surface 26a of the end plate 26 and the end plate surface 26b are finished. Since this finishing process is a flat finishing process, it can be finished very easily and precisely.

この仕上げ加工後に圧力を除去することにより、固定スクロール部材16は、突出量δとほぼ同じ凹み量δを有する図8(b)に示す状態となり、歯底面26a及び歯先面17aが曲線状のすり鉢形状になる。この時、加圧圧力の大きさを制御することにより、変形量δを任意に設定することができ、スクロールラップ巻始めから巻終りにかけての傾斜量を任意に調整できる。 By removing the pressure after the finishing process, the fixed scroll member 16 is in a state shown in FIG. 8B having a recess amount δ 2 that is substantially the same as the protrusion amount δ 2, and the tooth bottom surface 26 a and the tooth tip surface 17 a are curved. In the shape of a mortar. At this time, the amount of deformation δ 2 can be arbitrarily set by controlling the magnitude of the pressurizing pressure, and the amount of inclination from the start to the end of the scroll wrap can be adjusted arbitrarily.

次に、本発明の第実施例を図9を用いて説明する。図9は本発明の第実施例のスクロール圧縮機に用いる旋回スクロール部材1の製作方法を示す図である。なお、第実施例の説明において、参考例と共通するスクロール圧縮機の全体構造に関する重複する説明は省略する。 Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 9 is a view showing a manufacturing method of the orbiting scroll member 1 used in the scroll compressor of the second embodiment of the present invention. In the description of the second embodiment, the overlapping description regarding the overall structure of the scroll compressor common to the reference example is omitted.

この第実施例では、旋回スクロール部材1を精密仕上げ加工する際に、図9(a)に示すように、旋回スクロール部材1の背面側より加圧し、旋回スクロール部材1の中央部が変形量δだけ突出するように変形した状態とする。この状態で、旋回スクロール部材1のラップ3の歯先面3a、鏡板5の歯底面5a及び鏡板面5bを仕上げ加工する。この仕上げ加工は、平面仕上げ加工によるため、極めて容易に早くしかも精密に仕上げ加工できる。 In this second embodiment, when the orbiting scroll member 1 is precision finished, as shown in FIG. 9A, pressure is applied from the back side of the orbiting scroll member 1, and the center portion of the orbiting scroll member 1 is deformed. the deformed state so as to protrude by [delta] 3. In this state, the tooth tip surface 3a of the wrap 3 of the orbiting scroll member 1, the tooth bottom surface 5a of the end plate 5 and the end plate surface 5b are finished. Since this finishing process is a flat finishing process, it can be finished very easily and precisely.

この仕上げ加工後に圧力を除去することにより、旋回スクロール部材1は、突出量δとほぼ同じ凹み量δの図9(b)に示す状態となり、歯底面5a及び歯先面3aが曲線状のすり鉢形状になる。この時、加圧圧力の大きさを制御することにより、変形量δを任意に設定することができ、スクロールラップ巻始め9から巻終り10にかけての傾斜量を任意に調整できる。 By removing the pressure after the finishing, the orbiting scroll member 1, the state shown in FIG. 9 of approximately the same dented [delta] 3 and the projecting amount [delta] 3 (b), root surface 5a and the tooth tip surface 3a is curved It becomes a mortar shape. At this time, the amount of deformation δ 3 can be arbitrarily set by controlling the magnitude of the pressurizing pressure, and the amount of inclination from the scroll wrap winding start 9 to the winding end 10 can be arbitrarily adjusted.

参考例のスクロール圧縮機の縦断面図である。It is a longitudinal cross-sectional view of the scroll compressor of a reference example . 図1のスクロール圧縮機に用いる旋回スクロール部材の断面図である。It is sectional drawing of the turning scroll member used for the scroll compressor of FIG. 図2の旋回スクロール部材に滑り軸受を圧入する直前の製作工程を示す断面図である。It is sectional drawing which shows the manufacturing process just before press-fitting a sliding bearing in the turning scroll member of FIG. 図2の旋回スクロール部材及び滑り軸受の寸法を説明するための断面図である。It is sectional drawing for demonstrating the dimension of the turning scroll member of FIG. 2, and a sliding bearing. 図2の旋回スクロール部材のデータ位置を説明するための平面図である。It is a top view for demonstrating the data position of the turning scroll member of FIG. データ位置に対する歯底面の変位を示す図である。It is a figure which shows the displacement of the tooth base with respect to a data position. 旋回スクロール部材の各部を変更した場合におけるデータ位置に対する歯先面及び歯底面の変位を示す図である。It is a figure which shows the displacement of a tooth tip surface and a tooth base with respect to a data position at the time of changing each part of a turning scroll member. 本発明の第実施例のスクロール圧縮機に用いる固定スクロール部材の製作方法を示す図である。It is a figure which shows the manufacturing method of the fixed scroll member used for the scroll compressor of 1st Example of this invention. 本発明の第実施例のスクロール圧縮機に用いる旋回スクロール部材の製作方法を示す図である。It is a figure which shows the manufacturing method of the turning scroll member used for the scroll compressor of 2nd Example of this invention.

符号の説明Explanation of symbols

1…旋回スクロール部材、2…すべり軸受、3…ラップ、3a…歯先面、5…旋回スクロール鏡板、5a…鏡板面、5b…歯底面、6…ボス部、6a…凹部、7…圧入治具、8…円筒部材、9…スクロールラップ巻始め部、10…スクロールラップ巻終り部、11…耐圧力容器、13…回転軸、14…オルダムリング、15…バランスウェイト、16…固定スクロール部材、17…フレーム、18…吸入パイプ、19…吐出パイプ、20…電動機回転子、21…電動機固定子、22…電源端子、23…給油パイプ、24…油溜め、25…吐出空間、26…鏡板、27…ラップ。   DESCRIPTION OF SYMBOLS 1 ... Orbiting scroll member, 2 ... Sliding bearing, 3 ... Lapping, 3a ... Tooth tip surface, 5 ... Orbiting scroll end plate, 5a ... End plate surface, 5b ... Tooth bottom surface, 6 ... Boss part, 6a ... Recessed part, 7 ... Press fit treatment 8 ... Cylindrical member, 9 ... Scroll wrap winding start portion, 10 ... Scroll wrap winding end portion, 11 ... Pressure-resistant container, 13 ... Rotating shaft, 14 ... Oldham ring, 15 ... Balance weight, 16 ... Fixed scroll member, 17 ... Frame, 18 ... Suction pipe, 19 ... Discharge pipe, 20 ... Electric motor rotor, 21 ... Electric motor stator, 22 ... Power supply terminal, 23 ... Oil supply pipe, 24 ... Oil sump, 25 ... Discharge space, 26 ... End plate, 27 ... Lap.

Claims (2)

鏡板とそれに立設するインボリュート曲線あるいはそれに類似した曲線からなるラップを備える固定スクロールと旋回スクロール部材とを互いに組合せ、前記旋回スクロール部材を旋回運動させることにより作動流体の圧縮を行うスクロール圧縮機の製作方法において、
前記固定スクロールまたは前記旋回スクロール部材の中央部を突出するように反ラップ側から加圧し変形させた状態でその歯底面または歯先面を平坦に仕上げ加工した後に、加圧し変形させた状態を解除することにより前記歯底面または前記歯先面を曲線状のすり鉢形状にした
ことを特徴とするスクロール圧縮機の製作方法。
Production of a scroll compressor that compresses a working fluid by combining a fixed scroll having an end plate and an involute curve standing on it or a wrap made of a curve similar to the end plate and a orbiting scroll member, and orbiting the orbiting scroll member. In the method
After pressing and deforming the bottom surface or tip surface of the fixed scroll or the orbiting scroll member so that it protrudes from the center side of the fixed scroll or the orbiting scroll member, release the pressed and deformed state. A manufacturing method of a scroll compressor, wherein the tooth bottom surface or the tooth tip surface is formed into a curved mortar shape .
請求項1に記載されたスクロール圧縮機の製作方法において、前記歯底面または前記歯先面を平坦に仕上げ加工する部分を中央部に限定したことを特徴とするスクロール圧縮機の製作方法。 2. The method for manufacturing a scroll compressor according to claim 1, wherein a portion for finishing the tooth bottom surface or the tooth tip surface flat is limited to a central portion .
JP2004043924A 2004-02-20 2004-02-20 Manufacturing method of scroll compressor Expired - Fee Related JP4360622B2 (en)

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