JPS61152993A - Rotary compressor - Google Patents

Rotary compressor

Info

Publication number
JPS61152993A
JPS61152993A JP27300984A JP27300984A JPS61152993A JP S61152993 A JPS61152993 A JP S61152993A JP 27300984 A JP27300984 A JP 27300984A JP 27300984 A JP27300984 A JP 27300984A JP S61152993 A JPS61152993 A JP S61152993A
Authority
JP
Japan
Prior art keywords
gas
silencer
cylinder
end plate
heat
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
Application number
JP27300984A
Other languages
Japanese (ja)
Inventor
Hiroshi Iwata
博 岩田
Hirokatsu Kosokabe
弘勝 香曽我部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP27300984A priority Critical patent/JPS61152993A/en
Publication of JPS61152993A publication Critical patent/JPS61152993A/en
Pending legal-status Critical Current

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  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To prevent compression efficiency from worsening due to generation of heat in suction gas through heat generated in delivery gas, by providing a heat insulating material to be arranged in the peripheral surface of a compressing element directly brought into contact with the delivery gas. CONSTITUTION:An enclosed vessel 27, housing in its inside a compressing element, forms in an upper and a bottom surface of the compressing element a silencer 16, 17. A cylinder 1 delivers gas to the both silencers 16, 17, and the delivery gas, after it joins in the upper silencer 16, in introduced to an internal space of the enclosed vessel from a delivery port 19 provided in the upper silencer. A heat insulating material 20, 21, 25, being arranged on the peripheral surface of a side plate 9, 10 and the internal wall of a communication path 18 connecting the both silencers which are directly brought into contact with the delivery gas, prevents heat of the delivery gas from being transmitted to the compressing element.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明はロータリ圧縮機に係り、特にシリンダ内に吸込
まれたガスの吸気加熱に起因する損失の低減を図るもの
である。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rotary compressor, and particularly aims to reduce loss caused by heating of gas sucked into a cylinder.

〔発明の背景〕[Background of the invention]

家庭用空気調和機に使用されているロータリ圧縮機は密
閉されたケース内に電動機と圧縮要素が組込まれ、ケー
ス外から圧縮要素に直接吸込まれたガスは圧縮要素内で
圧縮され、高温高圧のガスになり、ケース内に放出され
、その麦ケースに設けられた吐出管から圧縮機外に吐出
される。従って圧縮要素及びケース内の潤滑油は高温ガ
スにさらされているため、吸込んだガスを加熱し、吸気
加熱損失のため医縮最の性能が低下する。
The rotary compressor used in home air conditioners has an electric motor and a compression element built into a sealed case. Gas is drawn directly into the compression element from outside the case and is compressed within the compression element, producing high-temperature, high-pressure gas. It becomes a gas, is released into the case, and is discharged outside the compressor from a discharge pipe installed in the wheat case. Therefore, since the compression element and the lubricating oil in the case are exposed to high temperature gas, they heat the inhaled gas, and the performance of the compressor deteriorates due to the inlet air heating loss.

そこで吸気加熱損失低減のため、圧縮要素から吐出され
たガスを一度ケース外に導きラジェータで冷却した後ケ
ース内に再度導く方法(実開昭54−2806号)ある
いはケース外のラジェータで冷却し、低温になったガス
をケース内に戻し、潤滑油を冷却する方法(実開昭51
−159909号)などが知られている。これらの方法
は加熱損失低減に効果はあるが、一方ではラジェータを
取付けるために裂品価、格が高くなる、あるいはラジェ
ータ取付スペースを要するため製品の小形化が難しいと
いう問題0”sある・〔発明の目的〕 本発明の目的は上記した従来技術の欠点をなくし、ケー
ス内で、吸気ガスの加熱を軽減する方法を提供すること
にある。
Therefore, in order to reduce intake air heating loss, the gas discharged from the compression element is first guided outside the case, cooled by a radiator, and then guided back into the case (Utility Model Application No. 54-2806), or the gas is cooled by a radiator outside the case. A method of cooling the lubricating oil by returning the low-temperature gas to the case.
-159909) etc. are known. These methods are effective in reducing heating loss, but on the other hand, there are problems such as higher product prices and prices due to the installation of the radiator, or difficulty in downsizing the product because it requires space to install the radiator. OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the drawbacks of the prior art described above and to provide a method for reducing the heating of intake gas within the case.

〔発明の概要〕[Summary of the invention]

現状の圧縮機では圧縮要素のシリンダから吐出されるガ
スは圧5m要素と一体となり圧縮要素を覆うように取付
けられているサイレンサに入ってからケース内に放出さ
れるようになっている。またこのサイレンサの一部は潤
滑油中に位置している。シリンダから吐出されたガスは
最も高温であり、このガスが上記サイレンサに入ること
により、圧縮要素及び潤滑油を加熱する原因になってい
る。
In the current compressor, the gas discharged from the cylinder of the compression element is integrated with the 5 m pressure element, enters a silencer attached to cover the compression element, and then is discharged into the case. A portion of this silencer is also located in lubricating oil. The gas discharged from the cylinder is the hottest and this gas enters the silencer causing heating of the compression element and lubricating oil.

本発明は、サイレンサ内のガスと圧縮要素及びff4滑
油この熱交換を低減させるための断熱層を設けることを
特徴とするものである。
The present invention is characterized by providing a heat insulating layer to reduce heat exchange between the gas in the silencer, the compression element, and the FF4 oil.

〔発明の実権例〕[Examples of actual rights to inventions]

本発明の実施例を第1図、第2図を用いて説明する。第
1図は圧縮機の縦断面図であり、篤2図は第1図のシリ
ンダ部水平断面図である。
Embodiments of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a longitudinal sectional view of the compressor, and FIG. 2 is a horizontal sectional view of the cylinder portion of FIG.

図において、1はロータリ圧縮機Rのシリンダ5はシリ
ンダ1内を回転するローラ、4はローラ5に回転を与え
るクランクであり、クランク442回転軸5と一体にな
っており、駆動装置に係る圧縮機モータ15によって駆
動されるものである。9.10はシリンダ1の上端、下
端にあり毛前記回転軸5の軸受を兼ねた端板に係る上端
板、下端板である。2は、先端がローラ5に当接し、後
方からばね6により押され、ローラ5の回転に従りて往
復運動し、シリンダ1内を圧縮室7と吸込室8とに仕切
るベーンである。14は吐出弁、15はリテーナであり
、圧縮室7内のガスがケース27内の圧力より高くなる
と吐出弁14がたわみガスが吐出される。リテーナ15
はそのときの吐出弁14のストッパの役割を果たす。1
6.17は、上端板9下端板10にはめられた上サイレ
ンサ、下サイレンサであり、吐出弁14から吐出さ7れ
たガスはこれらの中に放出される。18は、下端板10
.シリンダ1.上端板9を貫通し下サイレンサ17と上
サイレンサ16を導通させるガス流路である。19は上
サイレンサ16に設け、その中のガスが流出できる開口
部である。以上の圧縮要素を持ちさらに20,21.2
2 は、それぞれ下端板10、上端板9.下サイレンサ
17に設けられた断熱材A、断熱材B、断熱材Cである
In the figure, 1 is a cylinder 5 of a rotary compressor R, which is a roller that rotates inside the cylinder 1, and 4 is a crank that rotates the roller 5. The crank 442 is integrated with the rotating shaft 5, and is used for compression related to the drive device. It is driven by a machine motor 15. Reference numerals 9 and 10 denote an upper end plate and a lower end plate that are located at the upper and lower ends of the cylinder 1 and also serve as bearings for the rotating shaft 5. Reference numeral 2 denotes a vane whose tip abuts against the roller 5, is pushed from behind by a spring 6, moves reciprocally as the roller 5 rotates, and partitions the inside of the cylinder 1 into a compression chamber 7 and a suction chamber 8. 14 is a discharge valve, and 15 is a retainer. When the gas in the compression chamber 7 becomes higher than the pressure in the case 27, the discharge valve 14 is deflected and the gas is discharged. Retainer 15
serves as a stopper for the discharge valve 14 at that time. 1
Reference numerals 6 and 17 denote an upper silencer and a lower silencer that are fitted into the upper end plate 9 and the lower end plate 10, into which the gas discharged from the discharge valve 14 is released. 18 is the lower end plate 10
.. Cylinder 1. This is a gas flow path that penetrates the upper end plate 9 and connects the lower silencer 17 and the upper silencer 16 to each other. 19 is an opening provided in the upper silencer 16 through which the gas therein can flow out. It has more than 20,21.2 compression elements.
2 are the lower end plate 10 and the upper end plate 9. They are heat insulating material A, heat insulating material B, and heat insulating material C provided in the lower silencer 17.

このように構成したロータリ圧縮機Rは、前記圧縮機上
−夕によって回転軸5が駆動されると、゛クランク4に
【工められたローラ5がシリンダ1内を回転し、ベーン
により仕切られた圧縮室7と吸込室8の容f′jIが変
化する。クランク4が矢印の方向に回転すると、吸込室
8の容積が太き(なり、吸込ボート11から冷媒を吸込
み、一方、圧縮室7の容積は小さくなり、吸込んだ冷媒
ガスは圧縮され、圧縮室7内の圧力がケース27内の圧
力より高くなると吐出弁14を押し上サイレンサ16.
下サイレンサ17内に吐出され、圧縮作用を行う。下サ
イレンサ17に吐出されたガスは矢印A、Bに沿って流
れ、上サイレンサ16に到り、上サイレンサ内16内の
ガスと合流し、矢印CVc沿って開口部19からケース
25内に流出し、矢印り、Eに沿って圧縮機上部に流れ
、吐出パイプ24から圧縮機外に流出する。
In the rotary compressor R configured in this way, when the rotary shaft 5 is driven by the compressor top and bottom, the roller 5 installed in the crank 4 rotates inside the cylinder 1, which is partitioned by vanes. The volumes f'jI of the compression chamber 7 and suction chamber 8 change. When the crank 4 rotates in the direction of the arrow, the volume of the suction chamber 8 increases (becomes) and sucks refrigerant from the suction boat 11, while the volume of the compression chamber 7 decreases and the sucked refrigerant gas is compressed. When the pressure inside the case 27 becomes higher than the pressure inside the case 27, the discharge valve 14 is pushed up and the silencer 16.
It is discharged into the lower silencer 17 and performs a compression action. The gas discharged to the lower silencer 17 flows along arrows A and B, reaches the upper silencer 16, merges with the gas inside the upper silencer 16, and flows out from the opening 19 into the case 25 along the arrow CVc. , and flows to the upper part of the compressor along arrows E, and flows out of the compressor from the discharge pipe 24.

下サイすンサ1フ、上サイレンサ16内に吐出されるガ
ス蚤°工最も高温である。そこで、耐熱、耐冷媒性の低
熱低温率断熱材(例えば樹脂等)で作った断熱材A20
.断熱材B21.断熱材C22をそれぞれ下端板10.
上端板9.下サイレンサ17に設けることKより、上記
ガスによる圧縮要素及び潤滑油の加熱が軽減され、加熱
損失が低減される。
The gas discharged into the lower silencer 1 and upper silencer 16 is at the highest temperature. Therefore, the insulation material A20 made of heat-resistant and refrigerant-resistant low heat and low rate insulation material (e.g. resin, etc.)
.. Insulation material B21. The insulation material C22 is attached to the lower end plate 10.
Upper end plate 9. By providing K in the lower silencer 17, heating of the compression element and lubricating oil by the gas is reduced, and heating loss is reduced.

例えば断熱材として樹脂を利用すると、熱伝導率はλJ
i=Q 、 25 k cal /711A’C程度の
物が利用できる。従って端板の材質を鋳鉄としてその厚
さζIPC= 6mm熱伝導率λPC= 45kcal
/rnh”c、 、端板のシリンダ内壁における熱伝達
率αi= 500kcal/vIIA℃、端板のサイ1
/7す内熱達率αo= 20Qkcal/rlIん℃と
すると断熱材を設けない場合の熱抵抗FLoは R6=:: I Aa* + a F C72F C+
17(111:= 20−5 (”’II:/kcal
 )となる。それに対して上記断熱材を厚さδJ=lx
mで設けるとこの場合の熱抵抗RはR=1/(!&+δ
F(/QFC+、aφB +1e7’l!o==24−
5(m” h”clheal)となり、断熱材を設けな
い場合に比べて約20係熱抵抗が大ぎくなる。すなわち
、シリンダ内のガス加熱量は約20チ軽減される。
For example, when resin is used as a heat insulator, the thermal conductivity is λJ
i=Q, 25 kcal/711A'C can be used. Therefore, assuming that the material of the end plate is cast iron, its thickness ζIPC = 6mm Thermal conductivity λPC = 45kcal
/rnh”c, , Heat transfer coefficient αi at the cylinder inner wall of the end plate = 500 kcal/vIIA℃, Size 1 of the end plate
/7 internal heat transfer rate αo= 20Qkcal/rlI℃, the thermal resistance FLo when no insulation material is provided is R6=:: I Aa* + a F C72F C+
17 (111:= 20-5 (”'II:/kcal
). On the other hand, the thickness of the above insulation material is δJ=lx
m, the thermal resistance R in this case is R=1/(!&+δ
F(/QFC+, aφB +1e7'l!o==24-
5 (m"h"clheal), and the thermal resistance is about 20 larger than that in the case where no heat insulating material is provided. That is, the amount of gas heating in the cylinder is reduced by about 20 inches.

上記例ではδB=1nhngとしたが、  aB−=’
1mmと厚くすればその効果がさらに大きくなることは
言うまでもない。
In the above example, δB=1nhng, but aB-='
Needless to say, if the thickness is increased to 1 mm, the effect will be even greater.

以上の実施例では下端板10.上端板9.下サイレンサ
17のすべてに断熱材を設けたが、必要に応じてそれら
のいずれかを設けてもよく、また、必要であればガス流
路18に断熱材D25を設けてもよい。
In the above embodiment, the lower end plate 10. Upper end plate 9. Although all of the lower silencers 17 are provided with heat insulating materials, any one of them may be provided as needed, and if necessary, a heat insulating material D25 may be provided in the gas flow path 18.

以上の説明では吐出ガスと圧縮要素間の伝熱を主に問題
にしたが、一方、圧縮要素は油中に位置しているため高
温の油から圧縮要素への伝熱も問題になる。第1図の場
合で述べると、断熱材C22を設けると油の加熱が軽減
され、油から圧縮要素への伝熱も軽減される。さらに、
第2図に示すようにシリンダ1の油温より低い温度が保
たれている部分に部分的に断熱材E26を設けてもよい
In the above explanation, the main problem was heat transfer between the discharged gas and the compression element, but on the other hand, since the compression element is located in oil, heat transfer from the high temperature oil to the compression element also becomes a problem. In the case of FIG. 1, providing the insulation material C22 reduces heating of the oil and also reduces heat transfer from the oil to the compression element. moreover,
As shown in FIG. 2, a heat insulating material E26 may be partially provided in a portion where a temperature lower than the oil temperature of the cylinder 1 is maintained.

さらに油から圧縮要素への伝熱の例として第5図に示し
た他の実施例について説明する。
Further, another embodiment shown in FIG. 5 will be described as an example of heat transfer from oil to the compression element.

第5図は吐出弁14を上端板のみに設けた場合でありる
。従って、下サイレンサ17及びガス流路18はな(、
下端板が直接油中に触れている場合であり、その他は第
1図の実施例とまったく同じである。この場合、下端板
17が油により加熱するのを防ぐため、下端板17に断
熱材A20を設けている。
FIG. 5 shows a case where the discharge valve 14 is provided only on the upper end plate. Therefore, the lower silencer 17 and the gas flow path 18 are
This is a case in which the lower end plate is in direct contact with oil, and the rest is exactly the same as the embodiment shown in FIG. In this case, in order to prevent the lower end plate 17 from being heated by oil, the lower end plate 17 is provided with a heat insulating material A20.

なお上記した断熱材は型等で簡単に成形でき、また伏況
忙応じてはコーティング等でも加工できるため、きわめ
て安価に加熱損失低減を図ることができる。
The above-mentioned heat insulating material can be easily molded using a mold or the like, and can also be processed by coating or the like depending on the situation, so it is possible to reduce heating loss at an extremely low cost.

〔発明の効果〕〔Effect of the invention〕

以上に述べたように1吐出ガスと圧縮要素間、1あるい
は油と圧縮要素間に断熱材を設けること。
As described above, a heat insulating material is provided between the discharged gas and the compression element, or between the oil and the compression element.

により、吸込ガスの加熱を軽減し、加熱損失を。This reduces heating of the suction gas and reduces heating losses.

低減でき、従来のラジェータを用いた場合の製品価格ア
ップ及びラジェータ取付スペースなどの不都合なしに圧
縮機性能を向上できる。
The compressor performance can be improved without inconveniences such as increase in product price and radiator installation space when using a conventional radiator.

【図面の簡単な説明】 第1図は本発明の一実施例を示す縦断面図、第2図は同
じくシリンダ部水平断面図、第5楓は本発明の他の実施
例を示す縦断面図である。 81・・・シリンダ、5・・・ローラ、5・・・軸、7
・・・圧縮室、9・・・上端板、11・・・吸込ポート
、15・・・モータ、15・・・リテーナ、17・・・
下サイレン九19・・・開口部、21・・・断熱材B、
25・・・断熱材り。 27・・・ケース。 f l 図 オ 3 図
[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, Fig. 2 is a horizontal cross-sectional view of the cylinder section, and the fifth maple is a longitudinal cross-sectional view showing another embodiment of the present invention. It is. 81...Cylinder, 5...Roller, 5...Shaft, 7
... Compression chamber, 9... Upper end plate, 11... Suction port, 15... Motor, 15... Retainer, 17...
Lower siren 919...opening, 21...insulation material B,
25...Insulation material. 27...Case. f l Figure O 3 Figure

Claims (1)

【特許請求の範囲】[Claims] 1.少なくとも、シリンダと、このシリンダ内を回転す
るローラと、このローラに回転を与えるクランクと、こ
のクランクと一体になっている回転軸と、前記シリンダ
の両端にあって前記回転軸の軸受を兼ねた端板と、端板
の少なくとも一方に吐出弁を有し、吐出弁のある端板設
けたサイレンサと先端が前記ローラに当接し、このロー
ラの回転に従って往復運動し、前記シリンダ内を圧縮室
と吸込室に仕切るベーンを有する圧縮要素により構成さ
れるロータリ圧縮機において、吐出弁から出たガスと圧
縮要素間に断熱材を設けたことを特徴とするロータリ圧
縮機。
1. At least a cylinder, a roller that rotates within the cylinder, a crank that rotates the roller, a rotating shaft that is integrated with the crank, and a rotating shaft located at both ends of the cylinder that also serves as a bearing for the rotating shaft. An end plate has a discharge valve on at least one of the end plates, and a silencer provided on the end plate with the discharge valve and its tip abut against the roller and reciprocate according to the rotation of the roller, thereby forming a compression chamber inside the cylinder. 1. A rotary compressor comprising a compression element having a vane partitioning into a suction chamber, characterized in that a heat insulating material is provided between the gas discharged from a discharge valve and the compression element.
JP27300984A 1984-12-26 1984-12-26 Rotary compressor Pending JPS61152993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27300984A JPS61152993A (en) 1984-12-26 1984-12-26 Rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27300984A JPS61152993A (en) 1984-12-26 1984-12-26 Rotary compressor

Publications (1)

Publication Number Publication Date
JPS61152993A true JPS61152993A (en) 1986-07-11

Family

ID=17521879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27300984A Pending JPS61152993A (en) 1984-12-26 1984-12-26 Rotary compressor

Country Status (1)

Country Link
JP (1) JPS61152993A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240276A (en) * 2015-10-12 2016-01-13 安徽美芝精密制造有限公司 Compressor
JP2020105978A (en) * 2018-12-27 2020-07-09 株式会社富士通ゼネラル Rotary compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240276A (en) * 2015-10-12 2016-01-13 安徽美芝精密制造有限公司 Compressor
JP2020105978A (en) * 2018-12-27 2020-07-09 株式会社富士通ゼネラル Rotary compressor

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