JPH0444116B2 - - Google Patents
Info
- Publication number
- JPH0444116B2 JPH0444116B2 JP58075314A JP7531483A JPH0444116B2 JP H0444116 B2 JPH0444116 B2 JP H0444116B2 JP 58075314 A JP58075314 A JP 58075314A JP 7531483 A JP7531483 A JP 7531483A JP H0444116 B2 JPH0444116 B2 JP H0444116B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- coating layer
- tetrafluoroethylene
- drive shaft
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011247 coating layer Substances 0.000 claims description 42
- 239000008199 coating composition Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 229920006393 polyether sulfone Polymers 0.000 claims description 10
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 9
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 9
- 229920002312 polyamide-imide Polymers 0.000 claims description 8
- 239000004962 Polyamide-imide Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 229920006015 heat resistant resin Polymers 0.000 claims description 4
- 229920001519 homopolymer Polymers 0.000 claims description 4
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical group FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 13
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 10
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000003973 paint Substances 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010010904 Convulsion Diseases 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 229920006367 Neoflon Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Description
【発明の詳細な説明】
本発明はロータリー圧縮機、詳しくは、軸受筒
をもつシリンダとフロント及びリヤヘツドとを備
え、前記シリンダのボアに、駆動軸の回転により
回転運動するロータを内装して、該ロータの前記
回転運動により気体を圧縮するごとくしたロータ
リー圧縮機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary compressor, in particular, a rotary compressor, which is provided with a cylinder having a bearing sleeve, and front and rear heads, and a rotor that rotates due to the rotation of a drive shaft is installed in the bore of the cylinder. The present invention relates to a rotary compressor that compresses gas by the rotational movement of the rotor.
この種圧縮機は、前記ロータの回転に伴い相対
運動する摺接部−例えば前記ロータの上下面と各
ヘツドとの摺接部、前記ロータ外周面とシリンダ
内周面との摺接部、駆動軸とその軸受筒との摺接
部−を多数もつている。それら摺接部はいずれも
金属面同志が対向しており、特に駆動軸とその軸
受筒との摺接面は、広い面積で金属接触している
ことから、摩擦が生ずるだけでなく、焼付けの問
題も生じていた。 This type of compressor has sliding contact portions that move relative to each other as the rotor rotates, such as sliding contact portions between the upper and lower surfaces of the rotor and each head, sliding contact portions between the outer circumferential surface of the rotor and the inner circumferential surface of the cylinder, and drive parts. It has many sliding contact parts between the shaft and its bearing sleeve. In all of these sliding contact parts, the metal surfaces face each other, and in particular, the sliding contact surface between the drive shaft and its bearing sleeve has a large area of metal contact, which not only causes friction but also the risk of seizure. There were also problems.
一方、本発明とは目的を異にするが、この種圧
縮機において、前記ロータの回転により摺接部と
なる圧縮空間の内壁にフッ素樹脂より成る被覆層
を形成したものが特開昭57−49084号公報に記載
されている。 On the other hand, although the purpose is different from the present invention, there is a compressor of this type in which a coating layer made of fluororesin is formed on the inner wall of the compression space which becomes the sliding contact part when the rotor rotates. It is described in Publication No. 49084.
上記従来の圧縮機を第５図に基づいて説明する
と、シリンダ５１内に偏心軸部５２と該軸部５２
に嵌合するロータ５３とを内装する一方、前記シ
リンダ５１に前記ロータ５３に摺接するベーン５
４を出退自由に内装し、前記ロータ５３が前記シ
リンダ５１内を偏心回転することにより気体の圧
縮作用を行うようにしたものである。 The above-mentioned conventional compressor will be explained based on FIG.
A rotor 53 that fits into the cylinder 51 is installed inside the cylinder 51, and a vane 5 that comes into sliding contact with the rotor 53 is installed inside the cylinder 51.
The rotor 53 rotates eccentrically within the cylinder 51 to compress the gas.
そして、この圧縮機は圧縮空間の内壁、即ちシ
リンダ５１内周面とフロント及びリヤヘツド（図
示せず）のボア５５側面に、４フツ化エチレン樹
脂、６フツ化プロピレン樹脂などのフツ素樹脂よ
り成る被覆層５６を形成し、該樹脂の断熱性を利
用して、前記圧縮空間内のガスが高温の前記シリ
ンダ５１、前記各ヘツドから吸熱する吸熱量を減
少させるようにしたものである。 In this compressor, the inner walls of the compression space, that is, the inner circumferential surface of the cylinder 51 and the sides of the bores 55 of the front and rear heads (not shown) are made of a fluororesin such as tetrafluoroethylene resin or hexafluoropropylene resin. A coating layer 56 is formed and the heat insulating properties of the resin are utilized to reduce the amount of heat absorbed by the gas in the compression space from the high temperature cylinder 51 and each head.
さらに、前記被覆層５６を形成するフツ素樹脂
は、耐魔耗性、接着性が弱いため、このフツ素樹
脂の耐魔耗性、接着性を向上させるために、前記
被覆層５６の形成について、第６図に示すよう
に、摺接面（例えば前記シリンダ５１の内面）
に、まず、セラミツクなどからなる硬化層５６ａ
を形成し、その後、この硬化層５６ａの上にフツ
素樹脂層５６ｂを塗布、焼成して被覆層５６を形
成していた。 Further, since the fluororesin forming the coating layer 56 has weak wear resistance and adhesiveness, in order to improve the wear resistance and adhesiveness of this fluororesin, the formation of the coating layer 56 is conducted. , as shown in FIG. 6, the sliding surface (for example, the inner surface of the cylinder 51)
First, a hardened layer 56a made of ceramic or the like is formed.
After that, a fluororesin layer 56b was applied on the cured layer 56a and fired to form a covering layer 56.
以上のごとく、前記従来のものは、樹脂に、耐
魔耗性、接着性に乏しい４フツ化エチレン樹脂、
６フツ化プロピレン樹脂などの汎用のフツ素樹脂
を用いたので、前記フツ素樹脂の耐魔耗性及び接
着性を向上させるために、わざわざ前記硬化層５
６ａを形成し、その上に前記フツ素樹脂を塗着し
なければならないのであつて、その結果、前記被
覆層５６を形成する作業が２段階になり、作業工
数が多くなる問題があつた。 As mentioned above, the conventional method uses tetrafluoroethylene resin, which has poor wear resistance and adhesive properties, as the resin.
Since a general-purpose fluororesin such as propylene hexafluoride resin was used, the cured layer 5 was intentionally added in order to improve the wear resistance and adhesiveness of the fluororesin.
6a and then the fluororesin must be applied thereon.As a result, the work for forming the covering layer 56 has to be done in two steps, resulting in a problem that the number of work steps increases.
そこで、本発明者らは、前記被覆層の形成にい
て研究を重ねた結果、テトラフルオロエチレン単
独重合体（以下PTFEと略す）とテトラフルオロ
エチレン−ヘキサフルオロプロピレン共重合体
（以下FETPと略す）及びエチレン−テトラフル
オロエチレン共重合体（以下FTEFと略す）より
選ばれた少なくとも一種以上のテトラフルオロエ
チレン共重合体の液体媒体中への分散体に、ポリ
フエニレンサルフアイド（PPS）、ポリエーテル
サルフオン（PES）、ポリアミドイミド（PAI）、
及びポリイミド（PI）より選ばれた少なくとも
一種以上のフイルム形成性耐熱性樹脂を配合した
ことを特徴とする被覆組成物に着目し、この被覆
用組成物をロータリー圧縮機いおけるフロントエ
ツド及びリヤヘツドの軸受筒内周面と該軸受筒内
周面に摺接する駆動軸外周面との一方の摺接面に
用いることにより、ワンコートで、換言すると、
前記摺接部の表面に前記硬化層５６ａを形成する
ことなどの基材処理を行わなくとも、直接前記表
面に塗装できながら、しかも、前記被覆用組成物
は、摩擦係数が低く、硬度、耐魔耗性に優れてい
るでけでなく、耐熱性にも優れていることを見い
出し、塗装後、焼成することにより、接着性にも
優れた被覆層を形成できるようにしたのである。
即ち、本発明は、前記被覆用組成物をロータリー
圧縮機における前記摺接面に適用し、前記被覆用
組成物の特性を有効に利用した被覆層を形成し、
前記ロータリー圧縮機の性能を向上した点に新規
な特徴を有するものである。もちろん耐魔耗性を
さらに改善、あるいは着色などの目的で各種顔
料、補強剤などを被覆用組成物へ添加することも
できる。添加剤としは、ガラスフアイバー、ガラ
スビーズ、繊維、粒状のグラフアイト、カーボン
及び酸化チタン、酸化鉛、酸化鉄、酸化クロムな
どがあげられる。 Therefore, as a result of repeated research into the formation of the coating layer, the present inventors found that tetrafluoroethylene homopolymer (hereinafter abbreviated as PTFE) and tetrafluoroethylene-hexafluoropropylene copolymer (hereinafter abbreviated as FETP) were used. Polyphenylene sulfide (PPS), polyether Sulfon (PES), polyamideimide (PAI),
Focusing on a coating composition characterized by blending at least one kind of film-forming heat-resistant resin selected from By using it on one of the sliding contact surfaces between the inner peripheral surface of the cylinder and the outer peripheral surface of the drive shaft that is in sliding contact with the inner peripheral surface of the bearing cylinder, it can be applied in one coat, in other words,
The coating composition can be directly coated on the surface without performing base material treatment such as forming the hardened layer 56a on the surface of the sliding contact portion, and the coating composition has a low coefficient of friction, hardness, and durability. They discovered that it not only has excellent wear resistance but also heat resistance, and by baking it after painting, they were able to form a coating layer with excellent adhesive properties.
That is, the present invention applies the coating composition to the sliding surface of a rotary compressor to form a coating layer that effectively utilizes the properties of the coating composition,
This rotary compressor has a novel feature in that the performance of the rotary compressor is improved. Of course, various pigments, reinforcing agents, etc. can also be added to the coating composition for the purpose of further improving wear resistance or for coloring. Examples of additives include glass fibers, glass beads, fibers, granular graphite, carbon and titanium oxide, lead oxide, iron oxide, chromium oxide, and the like.
この点を、第４図に基づき説明する。 This point will be explained based on FIG.
前記組成物をロータリー圧縮機における前記摺
接面にエアースプレーなどの方法で塗装し、赤外
線乾燥させた後、焼成して被覆層Ｅを形成する
と、前記PI、PIA、PES、PPSが優先的に沈降し
て、下層E1の主成分となり、基材との間に強力
な接着性を発揮するのである。 When the composition is applied to the sliding contact surface of a rotary compressor by a method such as air spraying, dried by infrared rays, and then fired to form a coating layer E, the PI, PIA, PES, and PPS are preferentially It settles and becomes the main component of the lower layer E1 , which exhibits strong adhesion to the base material.
一方、前記PTFE、PTFE共重合体は表面に優
先的に浮いて、前記被覆層Ｅの表層E2の主成分
を形成するので、前記各フツ素樹脂の優れた特性
（低摩擦係数、撥水、撥油性など）が生かされる。 On the other hand, the PTFE and PTFE copolymer preferentially float on the surface and form the main component of the surface layer E2 of the coating layer E, so the PTFE and PTFE copolymers have excellent properties (low coefficient of friction, water repellency, etc.) of each fluororesin. , oil repellency, etc.).
また、塗膜中のPPS、PES、PAI、PIは、基材
との接着のみならず、塗膜の耐魔耗性、硬度の向
上にも寄与しているのである。 Furthermore, PPS, PES, PAI, and PI in the paint film not only contribute to adhesion to the base material, but also to improve the wear resistance and hardness of the paint film.
本発明は以上の研究成果に基ずくもので、目的
とするところは、低摩擦係数で耐摩耗性に優れ、
しかもワンコートで被覆層を形成できる被覆用組
成物を用いてフロントヘツド及びリヤヘツドの軸
受筒内周面と該軸受筒内周面に摺接する駆動軸外
周面との一方の摺接面に、前記被覆層を形成する
ことにより、前記被覆層を簡単な作業工程で形成
できるだげでなく、前記摺接面での焼付けを有効
に解消でき、圧縮機の性能も向上できるようにす
る点にある。 The present invention is based on the above research results, and aims to achieve low friction coefficient and excellent wear resistance.
In addition, a coating composition that can form a coating layer in one coat is used to coat one of the sliding contact surfaces of the inner peripheral surface of the bearing cylinder of the front head and the rear head and the outer peripheral surface of the drive shaft that is in sliding contact with the inner peripheral surface of the bearing cylinder. By forming the covering layer, the covering layer can not only be formed through a simple work process, but also seizing on the sliding contact surface can be effectively eliminated, and the performance of the compressor can also be improved. .
即ち、本発明は、前記被覆用組成物の特性に着
目し、ロータリー圧縮機における前記摺接面、即
ち、駆動軸の回転時、摺接による摩擦熱が発生
し、摩擦損失により圧縮効率に影響を与える前記
摺接面に前記組成物を塗着、焼成してその被覆層
を形成し、前記組成物の特性を有効に利用してロ
ータリー圧縮機の性能を向上するようにした点に
特徴を有するもので、前記目的を達成するため
に、シリンダと軸受筒をもつフロント及びリヤヘ
ツドとを備え、前記シリンダ内に駆動軸の回転に
より回動運転するロータを内装するロータリー圧
縮機において、前記軸受筒内周面と該軸受筒内周
面に摺接する前記駆動軸外周面との一方の摺接面
に、テトラフルオロエチレン単独重合体とテトラ
フルオロエチレン−ヘキサフルオロプロピレン及
びテトラフルオロエチレン−エチレン共重合体の
なかの一種以上のテトラフルオロエチレン共重合
体の液体媒体中への分散体にポリフエニレンサル
フアイド、ポリエーテルサルフオン、ポリイミド
及びポリアミドイミドより選ばれた少なくとも一
種以上のフイルム形成性耐熱性樹脂を配合したこ
とを特徴とする被覆用組成物を塗着、焼成して成
る被覆層を形成して、前記摺接部での金属接触を
なくし、しかも前記被覆層をワンコートで形成で
きるようにしたものである。 That is, the present invention focuses on the characteristics of the coating composition, and solves the problem that when the sliding surface in a rotary compressor, that is, the drive shaft, is rotated, frictional heat is generated due to the sliding contact, and the compression efficiency is affected by friction loss. The composition is applied to the sliding contact surface and baked to form a coating layer, and the characteristics of the composition are effectively utilized to improve the performance of the rotary compressor. In order to achieve the above-mentioned object, a rotary compressor is provided with a front and rear head having a cylinder and a bearing sleeve, and a rotor that is rotatably driven by rotation of a drive shaft is housed in the cylinder. Tetrafluoroethylene homopolymer, tetrafluoroethylene-hexafluoropropylene, and tetrafluoroethylene-ethylene copolymer are applied to one sliding contact surface between the inner peripheral surface and the outer peripheral surface of the drive shaft that is in sliding contact with the inner peripheral surface of the bearing cylinder. At least one film-forming heat-resistant resin selected from polyphenylene sulfide, polyether sulfon, polyimide, and polyamide-imide is added to the dispersion of one or more tetrafluoroethylene copolymers in a liquid medium. Forming a coating layer by applying and baking a coating composition characterized in that the coating composition contains This is what I did.
以下、本発明の一実施例を図面に基づいて説明
する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図に示すものは、ステーシヨナリーベーン
型のロータリー圧縮機であつて、密閉ケーシング
１の下方に冷媒を圧縮する圧縮要素２を内装する
と共に、その上方に、該圧縮要素２に動力を供給
するモータＭを内装している。 The one shown in FIG. 1 is a stationary vane type rotary compressor, in which a compression element 2 for compressing refrigerant is installed below a hermetic casing 1, and above it, power is supplied to the compression element 2. A supply motor M is installed inside.
前記圧縮要素２は、内部にボア３をもつシリリ
ンダ４の上下部に、フロントヘツド５とリヤヘツ
ド６とを設ける一方、前記シリンダ４のボア３に
ロータ７を内装している。 The compression element 2 is provided with a front head 5 and a rear head 6 at the upper and lower portions of a cylinder 4 having a bore 3 therein, and a rotor 7 is housed in the bore 3 of the cylinder 4.
また、前記シリンダ４に摺動溝（図示せず）を
形成して、該摺動溝内にベーン１０を出退可能に
設け、このベーン１０をばね（図示せず）によ
り、前記ロータ７に常時接触すべく付勢させて、
該ベーン１０により、前記ボア３を吸入口１１を
もつ低圧室３ａと吐出口（図示せず）をもつ高圧
室（図示せず）とに区画している。 Further, a sliding groove (not shown) is formed in the cylinder 4, and a vane 10 is provided in the sliding groove so as to be able to move in and out, and the vane 10 is attached to the rotor 7 by a spring (not shown). energized so that they are in constant contact,
The vane 10 divides the bore 3 into a low pressure chamber 3a having an inlet 11 and a high pressure chamber (not shown) having an outlet (not shown).
また、前記モータＭは、そのステータ８に駆動
軸９を圧入固定している。 Further, the motor M has a drive shaft 9 press-fitted into the stator 8 thereof.
そして、その駆動軸９を、前記各ヘツド５，６
及びシリンダ４に挿通させて、該各ヘツド５，６
の軸受筒５ａ，６ａにより軸受支持させると共
に、前記駆動軸９の偏心軸部９ａを前記ボア３内
のロータ７に挿嵌している。 Then, the drive shaft 9 is connected to each of the heads 5, 6.
and the respective heads 5 and 6 by inserting them into the cylinder 4.
The eccentric shaft portion 9a of the drive shaft 9 is inserted into the rotor 7 within the bore 3.
また、１２は前記吸入口１１と連通し、圧縮要
素２内に低圧冷媒を導く吸入管で、１３は、高圧
冷媒ガスを前記ケーシング１内から機外に吐出す
るための吐出管である。 Further, 12 is a suction pipe that communicates with the suction port 11 and guides low-pressure refrigerant into the compression element 2, and 13 is a discharge pipe for discharging high-pressure refrigerant gas from inside the casing 1 to the outside of the machine.
第２図に示した実施例は、以上のごとく構成す
るロータリー圧縮機において、前記ロータ７の外
周面と軸受筒５ａ，６ａの内周面に摺接する前記
駆動軸９の各軸部９ｂ，９ｃ外周面とに、
PTFE、PTFE共重合体の一種以上を有機液体中
に分散したオルガノゾルに、PPS、PES、PAI、
PIのなかより選ばれた少なくとも一種を配合し
た被覆用組成物を塗着焼成して被覆層１５，１６
を形成したのである。 In the embodiment shown in FIG. 2, in the rotary compressor constructed as described above, each shaft portion 9b, 9c of the drive shaft 9 is in sliding contact with the outer circumferential surface of the rotor 7 and the inner circumferential surface of the bearing sleeves 5a, 6a. On the outer peripheral surface,
PPS, PES, PAI,
A coating composition containing at least one selected from PI is applied and baked to form coating layers 15 and 16.
was formed.
ここで、前記被覆層１５，１６を形成する前記
塗料の一例を説明する。 Here, an example of the paint forming the coating layers 15 and 16 will be explained.
この塗料は、385部のメチルイソプチルケトン
（有機媒体）に平均粒径0.2〜0.5μのPTFE分散体
であるPTFE水性分散体（重合体含有量60重量％
［ダイキン工業製ポリフロンデイスバージヨンＤ
−１］）30部とFEP水性分散体（重合体含有量50
重量％（ダイキン工業製ネオフロンデイスパージ
ヨンND−１）］70部との混合物を分散し、さら
に水分を除去して、PTFE／FEP＝3/7組成の
PTFE−FEP25.0重量％を含む淡黄色半透明状の
オルガノゾル200部を作成する。 The paint consists of a PTFE aqueous dispersion (polymer content 60% by weight), which is a PTFE dispersion with an average particle size of 0.2-0.5μ, in 385 parts of methyl isobutyl ketone (organic medium).
[Daikin Industries Polyfrondis Version D
-1]) 30 parts and FEP aqueous dispersion (polymer content 50 parts)
Weight% (Daikin Industries, Ltd. Neoflon Dispersion ND-1)] 70 parts of the mixture was dispersed, water was further removed, and PTFE/FEP=3/7 composition was obtained.
200 parts of a pale yellow translucent organosol containing 25.0% by weight of PTFE-FEP is prepared.
そしてこの混合オルガノゾル200部とPAI樹脂
AI−100（アモコ社製）100部、PES、100P（Ｉ、
Ｃ、Ｉ製）20部及びＮ−メチル−ピロリドン110
部、並びに顔料としてカーボンネオスペクトラマ
ーク（コロンビアカーボン製）６部及び酸化チ
タンFR−22（チタン工業製）１部を混練、慮過し
て作成するのである。 And 200 parts of this mixed organosol and PAI resin
AI-100 (manufactured by Amoco) 100 copies, PES, 100P (I,
C, I) 20 parts and N-methyl-pyrrolidone 110 parts
and 6 parts of Carbon Neo Spectra Mark (manufactured by Columbia Carbon) and 1 part of titanium oxide FR-22 (manufactured by Titanium Kogyo) as pigments.
尚、PTFE、PTFE共重合体、及びPPS、
PES、PAI、PIなどの樹脂の混合比は上記実施例
に限るものではない。 In addition, PTFE, PTFE copolymer, and PPS,
The mixing ratio of resins such as PES, PAI, PI, etc. is not limited to the above examples.
次に、上記組成物を用いて摺接面に被覆層を形
成する方法を説明する。 Next, a method of forming a coating layer on a sliding surface using the above composition will be explained.
前記ロータ７の外周面、前記軸部９ｂ，９ｃの
外周面を研磨、脱脂した後、サンドブラストし、
その上に、前記塗料をエアースプレーなどにより
塗装する。 After polishing and degreasing the outer circumferential surface of the rotor 7 and the outer circumferential surfaces of the shaft portions 9b and 9c, sandblasting is performed,
The paint is applied thereon by air spraying or the like.
さらに、赤外線乾燥し、次に280℃〜380℃で約
30分間焼成し、空冷して被覆層１５，１６を形成
するのである。 Further, infrared drying, then 280℃~380℃ about
The coating layers 15 and 16 are formed by baking for 30 minutes and cooling in air.
前記被覆層１６，１６の膜厚は20〜70μとし、
好ましくは40±5μとする。 The thickness of the coating layers 16, 16 is 20 to 70μ,
Preferably it is 40±5μ.
以上のごとく構成する本実施例の作用を説明す
る。 The operation of this embodiment configured as above will be explained.
まず、前記圧縮機の圧縮要素を簡単に説明す
る。 First, the compression element of the compressor will be briefly explained.
前記モータＭの駆動に伴う前記ロータ７の偏心
回転により、低圧冷媒を前記吸入管１２、吸入口
１１を介して前記ボア３の低圧室３ａに吸入する
と同時に、前記ボア３における高圧室の冷媒を所
定圧力まで圧縮して吐出口からシリンダ４外に吐
出し、さらにマフラー１４、吐出管１３を介して
機外に吐出するのである。 Due to the eccentric rotation of the rotor 7 as the motor M is driven, the low pressure refrigerant is sucked into the low pressure chamber 3a of the bore 3 through the suction pipe 12 and the suction port 11, and at the same time, the refrigerant in the high pressure chamber of the bore 3 is sucked into the low pressure chamber 3a of the bore 3. It is compressed to a predetermined pressure and discharged from the discharge port to the outside of the cylinder 4, and further discharged to the outside of the machine via the muffler 14 and the discharge pipe 13.
而して、前記各軸受筒５ａ，６ａの内周面に摺
接する前記駆動軸９の各軸部９ｂ，９ｃの外周面
に低摩擦係数で耐摩耗性の良好な被覆層１６を形
成したから、前記軸受筒５ａ，６ａ内周面に軸受
メタルを装着しなくとも、該軸受筒５ａ，６ａ内
周面と前記軸部９ｂ，９ｃ外周面とが摩耗するこ
とがないでけでなく、前記被覆層１６は耐熱性を
有し、また、焼成により接着性も良好にできるか
ら、これらの特性により圧縮効率に影響を与える
前記軸部９ｂ，９ｃが焼付けを生じたりすること
は有効に解消でき、前記圧縮機の性能を向上する
ことができるのである。 Therefore, a coating layer 16 having a low coefficient of friction and good wear resistance is formed on the outer circumferential surface of each shaft portion 9b, 9c of the drive shaft 9 that comes into sliding contact with the inner circumferential surface of each bearing sleeve 5a, 6a. , even if no bearing metal is attached to the inner circumferential surfaces of the bearing tubes 5a, 6a, the inner circumferential surfaces of the bearing tubes 5a, 6a and the outer circumferential surfaces of the shaft portions 9b, 9c will not only be prevented from wearing out; Since the coating layer 16 has heat resistance and also has good adhesion by firing, it is possible to effectively eliminate the occurrence of seizing of the shaft portions 9b and 9c, which affects compression efficiency, due to these characteristics. , the performance of the compressor can be improved.
即ち、前記した被覆用組成物を用い、前記軸部
９ｂ，９ｃに前記被覆層１６を形成するようにし
たから、従来例のように硬化層を形成することな
くワンコートで行え、作業工数を少なくできるだ
けでなく、前記被覆層用組成物の特性を利用して
ロータリー圧縮機の性能を向上することもできる
のである。 That is, since the coating layer 16 is formed on the shaft portions 9b and 9c using the coating composition described above, it can be done in one coat without forming a hardened layer as in the conventional example, and the number of work steps can be reduced. Not only can it be reduced, but the properties of the coating layer composition can also be used to improve the performance of the rotary compressor.
また、前記ロータ７の外周面に前記被覆層１５
を形成したから、前記ロータ７の外周面と前記シ
リンダ４の内周面との摺接部が金属接触すること
をなくせるのである。 Further, the coating layer 15 is provided on the outer peripheral surface of the rotor 7.
, it is possible to eliminate metal contact between the outer circumferential surface of the rotor 7 and the inner circumferential surface of the cylinder 4.
従つて、前記摺接部の隙間を従来のように接触
防止のために各部品の製作公差や組立公差を考慮
して殊更大きく取る必要がなく、つまりきわめて
小さくできながら摩擦による焼付けも防止できる
のである。その結果、該隙間を介して前記高圧室
から低圧室３ａに漏れる圧縮冷媒の量も従来に比
べて減少できるから成績係数も向上できるのであ
る。 Therefore, it is not necessary to take the manufacturing tolerances and assembly tolerances of each part into account and make the gap between the sliding parts particularly large in order to prevent contact as in the past; in other words, it can be made extremely small while also preventing seizure due to friction. be. As a result, the amount of compressed refrigerant leaking from the high-pressure chamber to the low-pressure chamber 3a through the gap can be reduced compared to the conventional case, and the coefficient of performance can also be improved.
尚、前記圧縮機の運転当初に、前記被覆層１５
がシリンダ４内面に接触していてもよく、前記被
覆層１５は前記圧縮機の運転によりわずかに摩耗
し、前記ロータ７の回転を許容する最小隙間から
自ずと形成できるのである。 Incidentally, at the beginning of operation of the compressor, the coating layer 15
The coating layer 15 may be in contact with the inner surface of the cylinder 4, and the coating layer 15 is slightly worn away by the operation of the compressor, and can be formed naturally from the minimum gap that allows the rotation of the rotor 7.
また、前記ロータ７、駆動軸９もしくは両ヘツ
ド５，６を焼結合金で形成する場合には、前記被
覆工程のうち研磨、サンドブラストの作業を省略
できるのであつて、前記作業を一層簡単にするこ
とができるのである。 Furthermore, when the rotor 7, drive shaft 9, or both heads 5, 6 are formed of sintered metal, polishing and sandblasting operations can be omitted in the coating process, making the operations even easier. It is possible.
尚、前記被覆層１５，１６が一般のフツ素樹脂
に比べて耐摩耗性の点でも優れていることは第３
図に示すごとく実験的に確認している。 The third point is that the coating layers 15 and 16 are superior in abrasion resistance compared to general fluororesins.
This has been experimentally confirmed as shown in the figure.
即ち、第３図に示すものは、前記塗料による被
覆層のスラスト摩耗試験（鈴木・松原式摩耗試験
機による。荷重（Ｐ）＝４Kg／cm2、回転速度（Ｖ）
＝１ｍ／sec）の結果を示すもので、本実施例の
被覆層Ａは従来の汎用のフツ素樹脂から成る被覆
層Ｂと比較して、単位摩耗時間当たりの摩耗量が
半分以下である。 That is, what is shown in FIG. 3 is a thrust abrasion test (using a Suzuki-Matsubara type abrasion tester) of the coating layer using the above-mentioned paint. Load (P) = 4 kg/cm 2 , rotation speed (V)
= 1 m/sec), and the amount of wear per unit wear time of the coating layer A of this example is less than half that of the coating layer B made of a conventional general-purpose fluororesin.
上記実施例においては、前記軸部９ｂ，９ｃに
前記被覆層１６を形成したが、前記軸部９ｂ，９
ｃと前記軸受筒５ａ，６ａとで摺接部を構成する
２部材の一方の摺接面に形成すればよく、前記被
覆層を前記２部材の両方の前記摺接面に形成する
と、それら被覆層同志が粘着を生じ、かえつて好
ましくない。 In the above embodiment, the coating layer 16 was formed on the shaft portions 9b, 9c, but
c and the bearing tubes 5a and 6a forming a sliding contact portion.If the coating layer is formed on the sliding surfaces of both of the two members, the coating layer can be formed on the sliding surfaces of both members. The layers tend to stick to each other, which is rather undesirable.
また、前記実施例は、ステーシヨナリーベーン
型のロータリー圧縮機に前記被覆層を形成した
が、スライデイングベーン型のロータリー圧縮機
にも適用できるのはもちろんである。 Further, in the above embodiment, the coating layer is formed on a stationary vane type rotary compressor, but it is of course applicable to a sliding vane type rotary compressor.
以上のごとく本発明は、シリンダ４と軸受筒５
ａ，６ａをもつフロント及びリヤヘツド５，６と
を備え、前記シリンダ４内に駆動軸９の回転によ
り回転運動するロータ７を内装するロータリー圧
縮機において、前記軸受筒５ａ，６ａ内周面と該
軸受筒５ａ，６ａ内周面に摺接する前記駆動軸９
外周面との一方の摺接面に、テトラフルオロエチ
レン単独重合体とテトラフルオロエチレン−ヘキ
サフルオロプロピレン及びテトラフルオロエチレ
ン−エチレン共重合体のなかの一種以上のテトラ
フルオロエチレン共重合体の液体媒体中への分散
体にポリフエニレンサルフアイド、ポリエーテル
サルフオン、ポリイミド及びポリアミドイミドよ
り選ばれた少なくとも一種以上のフイルム形成性
耐熱性樹脂を配合したことを特徴とする被覆用組
成物を塗着、焼成して成る被覆層１６を形成した
から、前記被覆層１６は耐熱性を有し、また、焼
成により接着性も良好にできるから、これらの特
性により圧縮効率に影響を与える前記駆動軸９の
摺接部が焼付けを生じたりすることは有効に解消
でき、前記圧縮機の性能を向上することができる
のである。 As described above, the present invention provides the cylinder 4 and the bearing sleeve 5.
In a rotary compressor, the rotary compressor is equipped with front and rear heads 5, 6 having shafts 5a, 6a, and has a rotor 7 inside the cylinder 4 that rotates due to the rotation of the drive shaft 9. The drive shaft 9 is in sliding contact with the inner peripheral surface of the bearing tubes 5a and 6a.
A liquid medium containing a tetrafluoroethylene homopolymer and one or more tetrafluoroethylene copolymers selected from tetrafluoroethylene-hexafluoropropylene and tetrafluoroethylene-ethylene copolymers is placed on one sliding surface with the outer peripheral surface. applying a coating composition characterized in that at least one film-forming heat-resistant resin selected from polyphenylene sulfide, polyether sulfone, polyimide, and polyamideimide is blended into a dispersion of the coating composition; Since the coating layer 16 is formed by firing, the coating layer 16 has heat resistance, and also has good adhesion by firing, so these characteristics can improve the compression efficiency of the drive shaft 9. Seizing of the sliding contact portion can be effectively eliminated, and the performance of the compressor can be improved.
即ち、前記した被覆用組成物を用い、前記軸受
筒５ａ，６ａの内周面または前記駆動軸９の前記
軸受筒５ａ，６ａの内周面との摺接部のどちらか
一方に前記被覆層１６を形成するようにしたか
ら、従来例のように硬化層を形成することなくワ
ンコートで行え、作業工数を少なくできるだけで
なく、前記被覆用組成物の特性を利用してロータ
リー圧縮機の性能を向上することもできるのであ
る。 That is, using the coating composition described above, the coating layer is applied to either the inner peripheral surface of the bearing sleeves 5a, 6a or the sliding contact portion of the drive shaft 9 with the inner peripheral surface of the bearing sleeves 5a, 6a. 16, it can be done in one coat without forming a hardened layer unlike the conventional example, which not only reduces the number of work steps, but also improves the performance of the rotary compressor by utilizing the characteristics of the coating composition. It is also possible to improve
つまり、前記被覆用組成物が、前記した特性を
備えていることに着目し、この組成物を前記ロー
タリー圧縮機における前記摺接面に適用し、塗着
焼成により前記被覆層を形成した点に特徴を有す
るものであつて、斯く構成したから、前記組成物
の特性を利用して、作業工数を少なくワンコート
で前記被覆層を形成できるでけでなく、前記軸受
筒内周面と駆動軸外周面との摺接面での金属接触
による摩耗はもちろん、耐熱性を利用した焼成に
より接着性が高く、しかも耐熱性をもつ被覆層を
形成できるから、圧縮効率に影響を与える摩擦に
よる焼付けが生ずるのを有効に解消でき、ロータ
リー圧縮機の性能を向上できるのである。 That is, focusing on the fact that the coating composition has the above-described properties, this composition was applied to the sliding surface of the rotary compressor, and the coating layer was formed by applying and baking. With this composition, the coating layer can be formed in one coat with fewer man-hours by utilizing the properties of the composition, and the coating layer can also be formed on the inner circumferential surface of the bearing cylinder and the drive shaft. In addition to abrasion due to metal contact on the sliding surface with the outer circumferential surface, baking using heat resistance can form a coating layer with high adhesiveness and heat resistance, so there is no wear due to friction that affects compression efficiency. It is possible to effectively eliminate this problem and improve the performance of the rotary compressor.
第１図は本発明の一実施例の縦断面図、第２図
は要部の拡大縦断面図、第３図は本発明の試験結
果を示す説明図、第４図は本発明にかかる被覆層
の拡大断面説明図、第５図は従来例を示す説明
図、第６図は同要部の拡大断面図である。
４……シリンダ、５……フロントヘツド、６…
…リヤヘツド、５ａ，６ａ……軸受筒、７……ロ
ータ、９……駆動軸、１６……被覆層。
Fig. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, Fig. 2 is an enlarged longitudinal cross-sectional view of the main parts, Fig. 3 is an explanatory diagram showing test results of the present invention, and Fig. 4 is a coating according to the present invention. FIG. 5 is an explanatory view of a conventional example, and FIG. 6 is an enlarged cross-sectional view of the same essential parts. 4...Cylinder, 5...Front head, 6...
...Rear head, 5a, 6a...Bearing sleeve, 7...Rotor, 9...Drive shaft, 16...Coating layer.
Claims (1)
ツドとを備え、前記シリンダ内に駆動軸の回転に
より回転運動するロータを内装するロータリー圧
縮機において、前記軸受筒内周面と該軸受筒内周
面に摺接する前記駆動軸外周面との一方の摺接面
に、テトラフルオロエチレン単独重合体とテトラ
フルオロエチレン−ヘキサフルオロプロピレン及
びテトラフルオロエチレン−エチレン共重合体の
なかの一種以上のテトラフルオロエチレン共重合
体の液体媒体中への分散体にポリフエニレンサル
フアイド、ポリエーテルサルフオン、ポリイミド
及びポリアミドイミドより選ばれた少なくとも一
種以上のフイルム形成性耐熱性樹脂を配合したこ
とを特徴とする被覆用組成物を塗着、焼成して成
る被覆層を形成したことを特徴とするロータリー
圧縮機。1. In a rotary compressor that is equipped with a front and rear head having a cylinder and a bearing sleeve, and in which a rotor that rotates due to rotation of a drive shaft is housed in the cylinder, a sliding surface is formed on the inner circumferential surface of the bearing tube and the inner circumferential surface of the bearing tube. At least one type of tetrafluoroethylene copolymer selected from a tetrafluoroethylene homopolymer, a tetrafluoroethylene-hexafluoropropylene, and a tetrafluoroethylene-ethylene copolymer, on one sliding surface that contacts the outer peripheral surface of the drive shaft. A coating composition characterized in that at least one film-forming heat-resistant resin selected from polyphenylene sulfide, polyether sulfone, polyimide, and polyamide-imide is blended into a dispersion of the above in a liquid medium. A rotary compressor characterized in that a coating layer is formed by coating and firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7531483A JPS59201992A (en) | 1983-04-28 | 1983-04-28 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7531483A JPS59201992A (en) | 1983-04-28 | 1983-04-28 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59201992A JPS59201992A (en) | 1984-11-15 |
| JPH0444116B2 true JPH0444116B2 (en) | 1992-07-20 |
Family
ID=13572666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7531483A Granted JPS59201992A (en) | 1983-04-28 | 1983-04-28 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59201992A (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083040B2 (en) * | 1984-08-30 | 1996-01-17 | エヌティエヌ株式会社 | Polyamideimide resin molding composition |
| JPH0228238A (en) * | 1988-04-04 | 1990-01-30 | Nitto Denko Corp | Sliding member |
| JPH02153290A (en) * | 1988-08-08 | 1990-06-12 | Nippon Piston Ring Co Ltd | Vacuum pump for priming |
| JPH02176195A (en) * | 1988-12-28 | 1990-07-09 | Matsushita Refrig Co Ltd | Cooling medium pump |
| GB2274844B (en) * | 1993-02-09 | 1996-01-03 | T & N Technology Ltd | Plain bearing material |
| JP3740178B2 (en) * | 1994-10-31 | 2006-02-01 | 株式会社日立製作所 | SCREW ROTOR, SCREW COMPRESSOR, AND METHOD FOR PRODUCING THE SAME |
| JPH0988855A (en) * | 1995-09-28 | 1997-03-31 | Daikin Ind Ltd | Swing compressor |
| JP3777229B2 (en) * | 1996-10-18 | 2006-05-24 | Ｎｔｎ株式会社 | Abrasion-resistant and non-adhesive coating agent and sliding member |
| JP3918814B2 (en) | 2004-01-15 | 2007-05-23 | ダイキン工業株式会社 | Fluid machinery |
| FR2868010B1 (en) * | 2004-03-30 | 2007-09-07 | Solvay Advanced Polymers | METHOD FOR MANUFACTURING COMPOSITE ELEMENT, COMPOSITE ELEMENT AND ARTICLES COMPRISING SAME |
| JP2005325842A (en) * | 2005-06-13 | 2005-11-24 | Daikin Ind Ltd | Fluid machine |
| JP2007224767A (en) * | 2006-02-22 | 2007-09-06 | Daikin Ind Ltd | Rotary fluid machine |
| US20140275651A1 (en) | 2013-03-15 | 2014-09-18 | Honeywell International Inc. | Process for producing 2,3,3,3-tetrafluoropropene |
| KR102021683B1 (en) * | 2015-03-13 | 2019-09-16 | 다이킨 고교 가부시키가이샤 | Paint Compositions and Coated Articles |
| JP6819717B2 (en) * | 2019-04-19 | 2021-01-27 | ダイキン工業株式会社 | Coating composition and coating article |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5374532A (en) * | 1976-12-14 | 1978-07-03 | Daikin Ind Ltd | Fluororesin coating composition |
| JPS5749084A (en) * | 1980-09-08 | 1982-03-20 | Matsushita Electric Ind Co Ltd | Compressor |
-
1983
- 1983-04-28 JP JP7531483A patent/JPS59201992A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5374532A (en) * | 1976-12-14 | 1978-07-03 | Daikin Ind Ltd | Fluororesin coating composition |
| JPS5749084A (en) * | 1980-09-08 | 1982-03-20 | Matsushita Electric Ind Co Ltd | Compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59201992A (en) | 1984-11-15 |
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