JP2009299608A - Hermetically-sealed compressor - Google Patents

Hermetically-sealed compressor Download PDF

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Publication number
JP2009299608A
JP2009299608A JP2008156179A JP2008156179A JP2009299608A JP 2009299608 A JP2009299608 A JP 2009299608A JP 2008156179 A JP2008156179 A JP 2008156179A JP 2008156179 A JP2008156179 A JP 2008156179A JP 2009299608 A JP2009299608 A JP 2009299608A
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Japan
Prior art keywords
valve cover
upper bearing
convex portion
hermetic compressor
cylinder
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Pending
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JP2008156179A
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Japanese (ja)
Inventor
Yoshifumi Matsumoto
嘉文 松本
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Panasonic Corp
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Panasonic Corp
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Priority to JP2008156179A priority Critical patent/JP2009299608A/en
Publication of JP2009299608A publication Critical patent/JP2009299608A/en
Pending legal-status Critical Current

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Abstract

【課題】密閉容器内に封入されている圧縮要素を形成するバルブカバーの容積拡大をバルブカバーの高さを変更しないで実施する。また、上軸受けとバルブカバーの隙間をなくし、漏れを防止できる圧縮要素を提供する。
【解決手段】密閉容器内に封入されている圧縮要素を形成する上軸受けに凸部を設け、バルブカバーをその凸部に設置する。凸部の高さを変えることで、バルブカバーの容積が自由に変更可能となる。また、上軸受け凸部にバルブカバーを焼嵌めすることで、上軸受けとバルブカバーの隙間をなくし、圧縮要素からの冷媒の漏れをなくすことで、オイル吐出の少ない圧縮機を構成できるようになる。
【選択図】図1
An object of the present invention is to increase the volume of a valve cover that forms a compression element enclosed in a sealed container without changing the height of the valve cover. Moreover, the compression element which eliminates the clearance gap between an upper bearing and a valve cover, and can prevent a leak is provided.
A convex portion is provided on an upper bearing forming a compression element enclosed in a sealed container, and a valve cover is installed on the convex portion. By changing the height of the convex portion, the volume of the valve cover can be freely changed. Further, by shrink-fitting the valve cover to the upper bearing convex portion, the gap between the upper bearing and the valve cover is eliminated, and the refrigerant leakage from the compression element is eliminated, so that a compressor with less oil discharge can be configured. .
[Selection] Figure 1

Description

本発明は、密閉容器内に電動要素と圧縮要素とを備えてなる、密閉型圧縮機の構造に関するものである。   The present invention relates to a structure of a hermetic compressor including an electric element and a compression element in a hermetic container.

従来、この種の密閉型圧縮機は、圧縮機構部を形成するシリンダにバルブカバー、上軸受け、ピストン、ベーンを配置し、各部品の位置決めを行った後、前記バルブカバーと上軸受けを前記シリンダにボルトにて締結する形態を取っていた。バルブカバーを配置する上軸受けのフランジ部は、バルブカバーと上軸受けからの冷媒の漏れを防止するため平坦に加工する機構を取っていた(例えば、特許文献1参照)。
特開2006−118421号公報
Conventionally, in this type of hermetic compressor, a valve cover, an upper bearing, a piston, and a vane are arranged in a cylinder that forms a compression mechanism portion, and after positioning each component, the valve cover and the upper bearing are connected to the cylinder. It was in the form of fastening with bolts. The flange part of the upper bearing which arrange | positions a valve cover has taken the mechanism processed flatly in order to prevent the leakage of the refrigerant | coolant from a valve cover and an upper bearing (for example, refer patent document 1).
JP 2006-118421 A

しかしながら、従来の構造ではバルブカバーの容積を大きくする必要がある場合、バルブカバーの高さが高くなり、特に絞り部の厚みが薄くなってしまい、液圧縮などが発生した場合の強度が低下するという問題があった。また、上軸受けフランジ部の平坦部、およびバルブカバーの加工精度が悪い場合、上軸受けとバルブカバーの隙間からの冷媒漏れが発生し、周囲のオイルを吹き上げ最終的には圧縮機のオイル吐出量が増えてしまうという問題があった。   However, in the conventional structure, when it is necessary to increase the volume of the valve cover, the height of the valve cover is increased, particularly the thickness of the throttle portion is decreased, and the strength when liquid compression occurs is reduced. There was a problem. In addition, if the processing accuracy of the flat part of the upper bearing flange part and the valve cover is poor, refrigerant leaks from the gap between the upper bearing and the valve cover, and the surrounding oil is blown up. There was a problem that would increase.

前記従来の課題を解決する為に、本発明の密閉型圧縮機は、バルブカバーが配置される上軸受けのフランジ部に凸部を設けることで、バルブカバーの容積拡大ができ、バルブカバーをその凸部に焼嵌めすることで、上軸受けとバルブカバーからの冷媒漏れを防止する。   In order to solve the above-described conventional problems, the hermetic compressor of the present invention can increase the volume of the valve cover by providing a convex portion on the flange portion of the upper bearing on which the valve cover is disposed. Refrigerant leakage from the upper bearing and the valve cover is prevented by shrink fitting to the convex portion.

本発明の密閉型圧縮機は、前記構成を有することで、上軸受けの凸部の高さを変えることで、バルブカバーの高さを変更しなくても、必要とされるバルブカバー容積を確保することが可能となる。また、バルブカバーを上軸受けの凸部に焼嵌めすることにより、上軸受けとバルブカバーの隙間を、従来以上に小さくできるため、冷媒漏れが少なくなり、オイル吐出量の低減も可能となる。   The hermetic compressor of the present invention has the above-described configuration, so that the required valve cover volume can be secured without changing the height of the valve cover by changing the height of the convex portion of the upper bearing. It becomes possible to do. Further, by shrink-fitting the valve cover onto the convex portion of the upper bearing, the gap between the upper bearing and the valve cover can be made smaller than before, so that refrigerant leakage is reduced and the oil discharge amount can be reduced.

以下、本発明の実施の形態について、図面を参照しながら説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(実施の形態1)
図1は、本発明の実施の形態1における密閉型圧縮機の圧縮要素の縦断面図である。図1に示すように、密閉容器1内にシリンダ2、クランク軸3、ピストン4と、ベーン5、上軸受け6、下軸受け7などから形成された圧縮要素が構成されており、圧縮要素内で圧縮された冷媒ガスは、上軸受け6に設けられた吐出口を通って、バルブカバー8内に一旦吐出された後、再度バルブカバーの切欠きより排出される機構となっている。
(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a compression element of a hermetic compressor according to Embodiment 1 of the present invention. As shown in FIG. 1, a compression element formed of a cylinder 2, a crankshaft 3, a piston 4, a vane 5, an upper bearing 6, a lower bearing 7, and the like is configured in a sealed container 1. The compressed refrigerant gas is once discharged into the valve cover 8 through a discharge port provided in the upper bearing 6 and then discharged from the notch of the valve cover again.

圧縮機の排気量が大きくなってくると、吐出ガスを一旦受け止めるためのバルブカバー8の容積も大きくする必要がある。その際、一般的にはバルブカバー8の高さを高くする手法が取られるが、その場合バルブカバーの絞り部分の肉厚が薄くなり、強度低下につな
がってしまう。
As the displacement of the compressor increases, it is necessary to increase the volume of the valve cover 8 for temporarily receiving the discharge gas. At that time, generally, a method of increasing the height of the valve cover 8 is taken, but in that case, the thickness of the throttle portion of the valve cover becomes thin, leading to a decrease in strength.

上軸受け6に凸部6aを設けることにより、従来のバルブカバーでも容積を大きく確保することが可能となる。また、凸部の高さを変化させることで、容積を自由に変化させることも可能となる。   By providing the convex portion 6a on the upper bearing 6, a large volume can be secured even with a conventional valve cover. In addition, the volume can be freely changed by changing the height of the convex portion.

また、上軸受け6の凸部外側に、バルブカバー8を焼嵌め固定することにより、上軸受けの凸部6aとバルブカバー8の隙間が無くなり、冷媒ガスの漏れが減少することで、圧縮機構周辺のオイルを吹き上げることが無くなり、最終的には圧縮機から吐出されるオイル吐出量が減少する。   Further, by tightening and fixing the valve cover 8 on the outer side of the convex portion of the upper bearing 6, there is no gap between the convex portion 6a of the upper bearing and the valve cover 8, and the leakage of the refrigerant gas is reduced. The oil is not blown up, and the amount of oil discharged from the compressor is finally reduced.

以上のように、本発明にかかる密閉型圧縮機は、冷媒漏れが少なく、オイル吐出量も少ない圧縮機を得ることができるので、空気調和装置や乾燥機、給湯機などのヒートポンプを用いた機器に適用することができる。   As described above, since the hermetic compressor according to the present invention can obtain a compressor with less refrigerant leakage and less oil discharge amount, an apparatus using a heat pump such as an air conditioner, a dryer, or a water heater. Can be applied to.

本発明の実施の形態1における密閉型圧縮機の圧縮要素の断面図Sectional drawing of the compression element of the hermetic compressor in Embodiment 1 of this invention 従来の実施の形態における密閉型圧縮機の断面図Sectional drawing of the hermetic compressor in the conventional embodiment

符号の説明Explanation of symbols

1 密閉容器
2 シリンダ
3 クランク軸
4 ピストン
5 ベーン
6 上軸受け
6a 上軸受け凸部
7 下軸受け
8 バルブカバー
DESCRIPTION OF SYMBOLS 1 Airtight container 2 Cylinder 3 Crankshaft 4 Piston 5 Vane 6 Upper bearing 6a Upper bearing convex part 7 Lower bearing 8 Valve cover

Claims (3)

密閉容器と、前記密閉容器の内部に配置され、ベーン溝を有するシリンダと、偏心部を有するクランク軸と、前記クランク軸の前記偏心部に回転自在に嵌合されて、前記シリンダ内部で偏心回転運動するピストンと、前記シリンダの前記ベーン溝に設置されて前記ピストンに先端を接しながら前記ベーン溝を往復運動するベーンと、前記シリンダ、ベーン、ピストンを挟み込むように設置された上下軸受けと、前記上軸受け側に配置されたバルブカバーにて構成された圧縮機構部を備えた密閉型圧縮機において、前記上軸受けフランジ部に円形の凸部を設け、その凸部の上にバルブカバーを設置することを特徴とする密閉型圧縮機。 An airtight container, a cylinder disposed inside the airtight container, having a vane groove, a crankshaft having an eccentric portion, and an eccentric rotation inside the cylinder that is rotatably fitted to the eccentric portion of the crankshaft A piston that moves, a vane that is installed in the vane groove of the cylinder and reciprocates the vane groove while contacting a tip of the piston, and a vertical bearing that is installed so as to sandwich the cylinder, vane, and piston, In a hermetic compressor provided with a compression mechanism composed of a valve cover arranged on the upper bearing side, a circular convex portion is provided on the upper bearing flange portion, and a valve cover is installed on the convex portion. A hermetic compressor characterized by that. バルブカバーをボルトにて固定することを特徴とした請求項1に記載の密閉型圧縮機。 The hermetic compressor according to claim 1, wherein the valve cover is fixed with a bolt. バルブカバーを上軸受けに設けた凸部に焼嵌めにより固定することを特徴とした請求項1に記載の密閉型圧縮機。 2. The hermetic compressor according to claim 1, wherein the valve cover is fixed to a convex portion provided on the upper bearing by shrink fitting.
JP2008156179A 2008-06-16 2008-06-16 Hermetically-sealed compressor Pending JP2009299608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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JP2008156179A JP2009299608A (en) 2008-06-16 2008-06-16 Hermetically-sealed compressor

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JP2009299608A true JP2009299608A (en) 2009-12-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338094A (en) * 2010-07-26 2012-02-01 乐金电子(天津)电器有限公司 Lower cover structure of closed type compressor
CN105402127A (en) * 2014-08-21 2016-03-16 洛阳中方实业有限公司 Refrigeration compressor
CN107476974A (en) * 2017-08-11 2017-12-15 珠海格力节能环保制冷技术研究中心有限公司 Pump housing upper flange, pump assembly and compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338094A (en) * 2010-07-26 2012-02-01 乐金电子(天津)电器有限公司 Lower cover structure of closed type compressor
CN105402127A (en) * 2014-08-21 2016-03-16 洛阳中方实业有限公司 Refrigeration compressor
CN107476974A (en) * 2017-08-11 2017-12-15 珠海格力节能环保制冷技术研究中心有限公司 Pump housing upper flange, pump assembly and compressor

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