JPH01387A - hermetic compressor - Google Patents
hermetic compressorInfo
- Publication number
- JPH01387A JPH01387A JP62-153750A JP15375087A JPH01387A JP H01387 A JPH01387 A JP H01387A JP 15375087 A JP15375087 A JP 15375087A JP H01387 A JPH01387 A JP H01387A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- heat insulating
- bearing part
- sintered
- pressure chamber
- 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.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 14
- 239000011810 insulating material Substances 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000012805 post-processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
この発明は焼結部材で圧縮要素の構成部品を構成した密
閉型圧縮機の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an improvement in a hermetic compressor in which the compressor element is made of a sintered member.
(ロ) 従来の技術
従来の密閉型圧縮機は例えば実開昭53−112809
号公報に示されているように構成されている。ここで、
この公報を参考をこ従来例を説明する。第3図及び第4
図において、50は密閉容器で、この容器内には回転圧
縮要素51が収納されている。回転圧縮要素51はシリ
ンダ52と、回転軸53の偏心部54によってシリンダ
52内を回転するローラ55と、このローラに接してシ
リンダ52内を低圧室56と高圧室57とに区画するベ
ーン5Bと、シリンダ52の開口を封じる上軸受部59
と下軸受部60とにより構成されている。シリンダ52
には低圧室56と高圧室57とを囲むように熱伝導率の
小さい断熱材61が埋め込まれている。上軸受部59と
下軸受部60とのシリンダ52側の端面には熱伝導率の
小さい断熱材62.63が付着されている。(b) Conventional technology A conventional hermetic compressor is, for example, the Utility Model Publication No. 53-112809.
The structure is as shown in the publication. here,
A conventional example will be explained with reference to this publication. Figures 3 and 4
In the figure, 50 is a closed container, and a rotary compression element 51 is housed in this container. The rotary compression element 51 includes a cylinder 52, a roller 55 that rotates inside the cylinder 52 by an eccentric portion 54 of a rotating shaft 53, and a vane 5B that contacts this roller and divides the inside of the cylinder 52 into a low pressure chamber 56 and a high pressure chamber 57. , an upper bearing portion 59 that closes the opening of the cylinder 52;
and a lower bearing portion 60. cylinder 52
A heat insulating material 61 with low thermal conductivity is embedded in the chamber so as to surround the low pressure chamber 56 and the high pressure chamber 57. Insulating materials 62 and 63 having low thermal conductivity are attached to the end surfaces of the upper bearing portion 59 and the lower bearing portion 60 on the cylinder 52 side.
この構造の密閉型圧縮機ではシリンダ52に埋め込まれ
た断熱材61と、上軸受部59と下軸受部60とのシリ
ンダ52側の端面に付着された断熱材62.63とによ
りローラ55とベーン58との協働で断熱圧縮された冷
媒の熱でシリンダ52や上下軸受部59.60の全体が
加熱されないようにし、シリンダ52内の低圧室56に
流入する冷媒の加熱熱量を小さくして温度上昇を抑え、
圧縮効率が向上するようにしている。In the hermetic compressor of this structure, the roller 55 and the vane are protected by a heat insulating material 61 embedded in the cylinder 52 and heat insulating materials 62 and 63 attached to the end faces of the upper bearing part 59 and the lower bearing part 60 on the cylinder 52 side. 58 to prevent the entire cylinder 52 and the upper and lower bearing parts 59, 60 from being heated by the heat of the adiabatically compressed refrigerant, and reduce the amount of heating heat of the refrigerant flowing into the low pressure chamber 56 in the cylinder 52 to lower the temperature. suppress the rise,
Compression efficiency is improved.
(ハ) 発明が解決しようとする問題点しかしながら、
断熱材61.62.63はシリンダ52に埋め込んだり
、上下軸受部59.60の端面に付着させたりしている
ため、その材料の耐久性を考慮して材質を決めなければ
ならなかったり、その材料の取付作業が複雑になったり
する等の問題があった。(c) Problems that the invention seeks to solveHowever,
Since the heat insulating materials 61, 62, and 63 are embedded in the cylinder 52 or attached to the end faces of the upper and lower bearing parts 59, 60, the material must be selected in consideration of the durability of the material. There were problems such as complicated material installation work.
この発明は上記の問題を解決するために、焼結部材で形
成された圧縮要素の構成部品を焼結成形時にプレススピ
ードを早めて内部の焼結密度を外表面の焼結密度よりも
低くして焼結部材の内部に実質的に熱伝導率を小さくす
る空間が作られるようにし、焼結成形時に断熱層が構成
部品に一体に形成されるようにすることを目的としたも
のである。In order to solve the above-mentioned problems, this invention increases the pressing speed during sintering of the components of a compressed element formed from a sintered member, so that the internal sintered density is lower than the sintered density of the outer surface. The object of this invention is to create a space inside the sintered member that substantially reduces thermal conductivity, and to form a heat insulating layer integrally with the component during sintering and forming.
(ニ) 問題点を解決するための手段
この発明は圧縮要素の構成部品の中、焼結部材で形成さ
れた構成部品を、外表面の焼結密度が高められるととも
に、内部の焼結密度が低くなるように焼結成形時のプレ
ススピードを早めて形成したものである。(d) Means for Solving the Problems The present invention provides components of a compression element that are made of sintered materials, so that the sintered density on the outer surface is increased and the sintered density on the inside is increased. The press speed during sintering and forming was increased to reduce the thickness.
゛ (ホ) 作用
この発明は上記のように構成したことにより、焼結部材
で形成された圧縮要素の構成部品を、焼結成形時に内部
の焼結密度を外表面の焼結密度よりも低くして内部に実
質的な断熱層が形成されるようにし、別部材の断熱材を
入れたり、後加工で断熱空間を形成したりしなくても焼
結成形時に同時に断熱層が形成されるようにしたもので
ある。゛ (E) Effect By having the above-described structure, the present invention makes the internal sintered density lower than the outer surface sintered density of the compressed element component made of the sintered member during sintering. This allows a substantial heat insulating layer to be formed inside the material, so that a heat insulating layer can be formed at the same time during sintering and molding without having to insert a separate heat insulating material or create a heat insulating space in post-processing. This is what I did.
(へ) 実施例
以下この発明を第1図及び第2図に示す実施例に基いて
説明する。(f) Example The present invention will be explained below based on the example shown in FIGS. 1 and 2.
1は密閉容器で、この容器内には上側に電動要素2が、
下側にこの電動要素の回転軸3によって駆動される回転
圧縮要素4が夫々収納されている。1 is a closed container, inside this container there is an electric element 2 on the upper side,
Rotary compression elements 4 each driven by the rotation shaft 3 of this electric element are housed on the lower side.
電動要素2は固定子5と、この固定子の内側でエアギャ
ップ6を介して回転軸3に挿着された回転子7とで構成
されている。回転圧縮要素4はシリンダ8と、回転軸3
の偏心部9によってシリンダ8内を回転するローラ10
゛と、このローラに接してシリンダ8内を低圧室11と
高圧室12とに区画するベーン13と、シリンダ8の開
口を封じる上軸受部14と下軸受部15と、この上軸受
部に穿設された吐出ボート16を開閉する吐出弁17と
、この吐出弁を覆うカップマフラー18とにより構成さ
れている。19は密閉容器1の土壁に取付けられた吐出
管である。The electric element 2 is composed of a stator 5 and a rotor 7 inserted into the rotating shaft 3 through an air gap 6 inside the stator. The rotary compression element 4 includes a cylinder 8 and a rotating shaft 3.
A roller 10 rotates within the cylinder 8 by an eccentric portion 9 of
A vane 13 that contacts this roller and divides the inside of the cylinder 8 into a low pressure chamber 11 and a high pressure chamber 12, an upper bearing part 14 and a lower bearing part 15 that close the opening of the cylinder 8, and a perforation in this upper bearing part. It is composed of a discharge valve 17 that opens and closes a discharge boat 16 provided therein, and a cup muffler 18 that covers this discharge valve. 19 is a discharge pipe attached to the earthen wall of the closed container 1.
上軸受部14と下軸受部15とは焼結部材で形成されて
いる。この焼結部材は粉末金属をプレスで圧縮成形した
後、炉で焼き固めて形成されている。そして、焼結部材
は圧縮成形するときのプレススピードを早めて外表面の
焼結密度を高くするとともに、内部の焼結密度を低くし
、内部の熱伝導率を小さくして断熱層21を形成するよ
うにしている。The upper bearing part 14 and the lower bearing part 15 are formed of sintered members. This sintered member is formed by compressing powder metal using a press and then baking and hardening it in a furnace. Then, the sintered member is compression-molded by increasing the press speed to increase the sintered density on the outer surface, lower the sintered density inside, and reduce the internal thermal conductivity to form the heat insulating layer 21. I try to do that.
このように構成された密閉型圧縮機において、シリンダ
8内に流入した冷媒はローラ10とベーン13との協働
により圧縮され、吐出ボート16を通って吐出弁17を
開放してカップマフラー18内に吐出される。このカッ
プマフラー内の冷媒は密閉容器1内に吐出され、電動要
素2のエアギヤツブ6を通り、吐出管19から密閉容器
1外に吐出される。In the hermetic compressor configured as described above, the refrigerant flowing into the cylinder 8 is compressed by the cooperation of the roller 10 and the vane 13, passes through the discharge boat 16, opens the discharge valve 17, and is discharged into the cup muffler 18. is discharged. The refrigerant in this cup muffler is discharged into the closed container 1, passes through the air gear 6 of the electric element 2, and is discharged from the discharge pipe 19 to the outside of the closed container 1.
上軸受部14と下軸受部15とは焼結成形時に内部に焼
結密度を低くして熱伝導率を小さくした断熱層21を形
成することにより、断熱圧縮されたシリンダ8内の冷媒
やこのシリンダ内から密閉容器1内に吐出された冷媒な
どの熱が互に移動しに<<シて温度上昇しないようにし
、シリンダ8内の低圧室11に流入した冷媒が加熱され
て圧縮効率が低下しないようにしている。また、上軸受
部14と下軸受部15とは焼結成形時に内部に実質的な
断熱層21を形成することにより、後加工で断熱材を取
付ける必要がないようにしている。The upper bearing part 14 and the lower bearing part 15 are formed by forming a heat insulating layer 21 with a low sintering density and low thermal conductivity inside the sintering process, so that the refrigerant in the adiabatically compressed cylinder 8 and this The heat of the refrigerant discharged from inside the cylinder into the sealed container 1 is prevented from moving to each other and the temperature rises, and the refrigerant flowing into the low pressure chamber 11 inside the cylinder 8 is heated and the compression efficiency is reduced. I try not to. Moreover, by forming a substantial heat insulating layer 21 inside the upper bearing part 14 and the lower bearing part 15 during sintering, there is no need to attach a heat insulating material in post-processing.
しかも、上軸受部14と下軸受部15とは外表面の焼結
密度を高くしているので、耐久性の問題が生じることも
ない。Moreover, since the outer surfaces of the upper bearing part 14 and the lower bearing part 15 have a high sintering density, no durability problem occurs.
この発明は上軸受部14と下軸受部15とを焼結成形す
るときに、内部に熱伝導率の小さい断熱層21を同時に
形成しており、後加工で断熱材を取付けることなく、熱
移動による圧縮効率の低下を防止できるようにしている
。In this invention, when the upper bearing part 14 and the lower bearing part 15 are sintered and formed, a heat insulating layer 21 with low thermal conductivity is simultaneously formed inside, and heat transfer is possible without installing a heat insulating material in post-processing. This prevents a decrease in compression efficiency due to
尚、上記説明においては、上軸受部14と下軸受部15
とを焼結部材で成形するように説明したが、シリンダ8
やローラ10を焼結部材で成形しても同様な効果を有す
ることは言うまでもない。In addition, in the above description, the upper bearing part 14 and the lower bearing part 15
Although it was explained that the cylinder 8 is molded with a sintered member,
It goes without saying that the same effect can be obtained even if the roller 10 is made of a sintered material.
(ト) 発明の効果
この発明の密閉型圧縮機は圧縮要素の構成部品の中、焼
結部材で形成された構成部品を、外表面の焼結密度が高
められるとともに、内部の焼結密度が低くなるように焼
結成形時のプレススピードを早めて形成したのであるか
ら、焼結部材で形成された圧縮要素の構成部品の内部に
熱伝導率の小さい実質的な断熱層を形成することができ
、熱移動によりシリンダ内に流入した冷媒が加熱されて
圧縮効率が低下するのを防止できる。しかも、焼結成形
時に断熱層が同時に形成されるので、後加工で断熱材を
取付けるものに比べて生産性を向上できる。(G) Effects of the Invention The hermetic compressor of the present invention has a component formed of a sintered member among the components of the compression element, in which the sintered density of the outer surface is increased and the sintered density of the internal part is increased. Since the press speed during sintering was increased to reduce the thermal conductivity, it is possible to form a substantial heat insulating layer with low thermal conductivity inside the compression element component made of the sintered material. This prevents the refrigerant flowing into the cylinder from being heated due to heat transfer and reducing the compression efficiency. Moreover, since the heat insulating layer is formed at the same time as the sintering process, productivity can be improved compared to when the heat insulating material is attached in post-processing.
第1図及び第2図はこの発明を示し、第1図は回転圧縮
機の縦断面図、第2図は回転圧縮要素を模式的に示す断
面図、第3図及び第4図は従来例を示し、第3図は回転
圧縮機の横断面図、第4図は第3図のIV−IV線断面
図である。
3・・・回転軸、 4・・・回転圧縮要素、 8・・・
シリンダ、 9・・・偏心部、 10・・・ローラ、
11・・・低圧室、 12・・・高圧室、 13
・・・ベーン、 14・・・上軸受部、 15・・・
下軸受部、 21・・・断熱層。1 and 2 show the present invention, FIG. 1 is a longitudinal sectional view of a rotary compressor, FIG. 2 is a sectional view schematically showing a rotary compression element, and FIG. 3 and 4 are conventional examples. FIG. 3 is a cross-sectional view of the rotary compressor, and FIG. 4 is a cross-sectional view taken along the line IV--IV in FIG. 3. 3... Rotating shaft, 4... Rotating compression element, 8...
Cylinder, 9... Eccentric part, 10... Roller,
11...Low pressure chamber, 12...High pressure chamber, 13
...Vane, 14...Upper bearing part, 15...
Lower bearing part, 21... heat insulation layer.
Claims (1)
回転するローラと、このローラに接してシリンダ内を低
圧室と高圧室とを区画するベーンと、シリンダの開口を
封じる軸受部とで圧縮要素を構成し、この圧縮要素の構
成部品の中、少なくとも1つを焼結部材で形成した密閉
型圧縮機において、前記焼結部材は焼結成形時のプレス
スピードを早めて外表面の焼結密度を高めるとともに、
内部の焼結密度を低くして形成されていることを特徴と
する密閉型圧縮機。1. A cylinder, a roller that rotates inside the cylinder by an eccentric part of a rotating shaft, a vane that comes into contact with this roller and divides the inside of the cylinder into a low pressure chamber and a high pressure chamber, and a bearing that seals the opening of the cylinder. In a hermetic compressor that constitutes a compression element and in which at least one of the components of the compression element is made of a sintered member, the sintered member increases the press speed during sintering and forms the outer surface by sintering. In addition to increasing the density of cohesion,
A hermetic compressor characterized by being formed with a low internal sintering density.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-153750A JPH01387A (en) | 1987-06-19 | hermetic compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-153750A JPH01387A (en) | 1987-06-19 | hermetic compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64387A JPS64387A (en) | 1989-01-05 |
JPH01387A true JPH01387A (en) | 1989-01-05 |
Family
ID=
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