JPH03222883A - Scroll compressor - Google Patents
Scroll compressorInfo
- Publication number
- JPH03222883A JPH03222883A JP1539890A JP1539890A JPH03222883A JP H03222883 A JPH03222883 A JP H03222883A JP 1539890 A JP1539890 A JP 1539890A JP 1539890 A JP1539890 A JP 1539890A JP H03222883 A JPH03222883 A JP H03222883A
- Authority
- JP
- Japan
- Prior art keywords
- space
- valve
- end plate
- valve mechanism
- scroll
- 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 abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、冷凍装置、空調装置等に使用する冷媒用の
スクロール圧縮機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a scroll compressor for refrigerant used in refrigeration equipment, air conditioners, etc.
この種のスクロール圧縮機は冷凍装置や空気調和装置等
に用いられており、従来第４図に示すように構成されて
いる。すなわち、足１上に固定された密閉状のシェル２
の上端部には、円板状の端板３ａとその下面から突出す
る渦巻状のスクロール側板３ｂとで一体形成された固定
スクロール３と、円板状に形成された上部軸受支え４と
が、上下に隣接して固定、収納されている。さらに上部
軸受支え４の下方には、皿状のバランサ室５ａと、垂直
状の軸受部５ｂと、固定部５Ｃとで一体形成された下部
軸受支え５が上下に隣接して固定、収納されている。上
下の軸受支え４．５には上部軸受６と下部軸受７とがそ
れぞれ嵌着されており、これら上下の軸受６，７には、
上端部に偏心軸受８ａを備えた主軸８が回転自在に軸支
されている。この主軸８の偏心軸受８ａには、円板状の
端板９ａと、その上面から突出して前記スクロール側板
３ｂと係合する渦巻状のスクロール側板９ｂと、スクロ
ール軸９Ｃとで一体形成された揺動スクロール９が、上
部軸受支え４との間をオルダム継手１０で係合されて軸
支されており、また主軸８の下部には、下部軸受支え５
側に固定の電動機ステータ１１と嵌合する電動機ロータ
１２が固定されている。１３は主軸８とともに回転する
ことにより油１４を吸入し、給油孔１５を経て各軸受６
．７．８ａへ送るポンプである。This type of scroll compressor is used in refrigeration systems, air conditioners, etc., and has conventionally been constructed as shown in FIG. That is, a closed shell 2 fixed on the foot 1
At the upper end, a fixed scroll 3 integrally formed with a disc-shaped end plate 3a and a spiral scroll side plate 3b protruding from the lower surface thereof, and an upper bearing support 4 formed in a disc-shape are provided. They are fixed and stored adjacent to each other above and below. Further, below the upper bearing support 4, a lower bearing support 5, which is integrally formed with a dish-shaped balancer chamber 5a, a vertical bearing part 5b, and a fixing part 5C, is fixed and stored vertically adjacently. There is. An upper bearing 6 and a lower bearing 7 are fitted into the upper and lower bearing supports 4.5, respectively.
A main shaft 8 having an eccentric bearing 8a at its upper end is rotatably supported. The eccentric bearing 8a of the main shaft 8 has a oscillator integrally formed with a disc-shaped end plate 9a, a spiral scroll side plate 9b that protrudes from the upper surface of the end plate 9a and engages with the scroll side plate 3b, and a scroll shaft 9C. A movable scroll 9 is engaged with and supported by an Oldham joint 10 between the upper bearing support 4 and a lower bearing support 5 at the bottom of the main shaft 8.
A motor rotor 12 is fixed on the side, which fits into a fixed motor stator 11 . 13 sucks oil 14 by rotating together with the main shaft 8, and supplies it to each bearing 6 through an oil supply hole 15.
．． 7.8a.
このように構成されていることにより、圧縮機に通電し
て電動機ステータ１１と電動機ロータ１２とが発生する
駆動力により主Ｍ８が回転すると、揺動スクロール９が
、偏心軸受８ａの偏心作用とオルダム継手１０との協働
によって揺動し、吸入管１６がら吸入された外気は、揺
動する揺動スクロール９のスクロール側板９ｂと、固定
スクロール３のスクロール側板３ｂとの間に形成された
圧縮室１７で圧縮され、吐出管１８から排出される。With this configuration, when the main M8 rotates due to the driving force generated by the electric motor stator 11 and the electric motor rotor 12 when the compressor is energized, the oscillating scroll 9 is rotated due to the eccentric action of the eccentric bearing 8a and the Oldham The outside air is oscillated in cooperation with the joint 10 and sucked in through the suction pipe 16 into a compression chamber formed between the scroll side plate 9b of the oscillating oscillating scroll 9 and the scroll side plate 3b of the fixed scroll 3. It is compressed at 17 and discharged from a discharge pipe 18.
従来のスクロール圧縮機は以上のように構成されている
ので、圧縮機が搭載されている空調装置、冷凍装置が長
期間停止し、圧縮機シェル２内に液冷媒が充満した状態
で起動された時に、圧縮室１７内に発生する液圧縮に起
因する異常高圧により、スクロール側板３ｂ、 ９ｂに
過大な応力が発生し、破損してしまう事があった。Since the conventional scroll compressor is configured as described above, the air conditioner and refrigeration equipment in which the compressor is mounted are stopped for a long period of time, and the compressor shell 2 is started with liquid refrigerant filling the compressor shell 2. At times, excessive stress was generated on the scroll side plates 3b and 9b due to abnormally high pressure caused by liquid compression occurring in the compression chamber 17, resulting in damage.
この問題点を解決すべく一最に第５図に示す如く、固定
スクロール端板３ａ部に、圧縮室１７からシェル２内空
間に圧力リリーフを行う弁機構３０が設けられている。In order to solve this problem, as shown in FIG. 5, a valve mechanism 30 is provided in the fixed scroll end plate 3a to provide pressure relief from the compression chamber 17 to the inner space of the shell 2.
即ち第５図において、３０はこの弁機構で、固定スクロ
ール端板３ａに螺着され、圧縮室１７と固定スクロール
端板３ａ上部空間を連通し、上部にネジ部を有する連通
孔３８に取付けられ、中央部にボール弁３４．バネ３５
．介挿え３６を収納し、ガス通路３３．３２を有する弁
本体よりなっている。なお３７は介挿え３６と弁本体３
１を固定するピンを示す。That is, in FIG. 5, reference numeral 30 denotes this valve mechanism, which is screwed onto the fixed scroll end plate 3a, communicates the compression chamber 17 with the upper space of the fixed scroll end plate 3a, and is attached to a communication hole 38 having a threaded portion at the upper part. , ball valve 34 in the center. spring 35
．． It consists of a valve body that houses the insert 36 and has gas passages 33,32. Note that 37 is the insert 36 and the valve body 3.
1 is shown.
この様な構造とする事により、前述の如く、圧縮機寝込
起動時の液圧縮により圧縮室１７内に異常な高圧圧力が
発生したとき、この弁機構３０が作動して、連通孔３８
．ガス通路３２．３３を介して高圧圧力は固定スクロー
ル端板３ａ上部空間にリリーフされる。With this structure, as mentioned above, when an abnormally high pressure is generated in the compression chamber 17 due to liquid compression when the compressor is started up, the valve mechanism 30 is activated and the communication hole 38 is activated.
．． The high pressure is relieved to the space above the fixed scroll end plate 3a through the gas passages 32,33.
しかし、このような弁機構３０を固定スクロール端板３
ａ上部に設けると、シェル２と固定スクロール端板３ａ
の間のすきまを大きくとらねばならず、圧縮機をより省
スペース化しようとする障壁となるだけでなく、弁機構
の部品点数が多く、組立作業性及び固定スクロール端板
３ａへの取付作業性が悪いという問題点があった。However, such a valve mechanism 30 is not connected to the fixed scroll end plate 3.
If provided on the upper part of a, the shell 2 and the fixed scroll end plate 3a
A large gap must be provided between the valves, which not only becomes a barrier to making the compressor more space-saving, but also has a large number of parts in the valve mechanism, which makes assembly work and installation work to the fixed scroll end plate 3a difficult. The problem was that it was bad.
この発明は上記のような問題点を解決するためになされ
たもので、圧縮機内の必要スペースを減少できるととも
に、部品点数が少なく、組立作業性の良い、スクロール
圧縮機の容量制御機構を得る事を目的とする。This invention was made to solve the above-mentioned problems, and provides a capacity control mechanism for a scroll compressor that can reduce the space required inside the compressor, has a small number of parts, and is easy to assemble. With the goal.
この発明に係るスクロール圧縮機の容量制御機構は、固
定スクロール端板に四部空間を設け、この端板内に弁機
構を内装したものである。The capacity control mechanism for a scroll compressor according to the present invention includes a fixed scroll end plate provided with a four-part space, and a valve mechanism internally provided within the end plate.
この発明におけるスクロール圧縮機の容量制御機構は、
固定スクロール端板そのものに加工を施して、弁主体（
弁機構ハウジング）機能を有する様に形成した事により
、弁機構が上記端板より突出する事無く内装でき、省ス
ペース化が実現できるとともに、弁機構としてのサブア
センブリーが廃止でき、組立作業性が改善できる。The capacity control mechanism of the scroll compressor in this invention is as follows:
The fixed scroll end plate itself is processed to form the valve main body (
By forming the valve mechanism housing to have a function, the valve mechanism can be installed internally without protruding from the end plate, saving space and eliminating the subassembly for the valve mechanism, improving assembly workability. can be improved.
以下この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図〜第３図において、４０は固定スクロール端板３
ａに設けられた円柱形状の凹部空間で、側面上部に同心
円状の溝４０ａが設けられ、また、底面４０ｂは平面に
仕上げられている。４１は上記空間４０に嵌合される円
形平板形状の板弁で、第３図に示す如く、面内に孔４１
ａが配設されている。４２はこの弁４１に予圧を与えて
いるコイルバネ、４３は止め輪である。そしてこれらは
上記空間４０内に、弁４１、コイルバネ４２の順に組込
まれた後、溝４０ａに止め輪４３を施す事により、弁機
構として組立てられる。1 to 3, 40 is the fixed scroll end plate 3
A concentric groove 40a is provided in the upper part of the side surface of the cylindrical recessed space provided in the column a, and the bottom surface 40b is finished flat. Reference numeral 41 denotes a circular plate-shaped plate valve that is fitted into the space 40, and has a hole 41 in the plane as shown in FIG.
a is arranged. 42 is a coil spring that applies preload to this valve 41, and 43 is a retaining ring. After the valve 41 and the coil spring 42 are assembled in this order into the space 40, a retaining ring 43 is attached to the groove 40a, thereby assembling the valve mechanism.
第２図は上記弁機構部の平面図であり、弁４１に設けら
れた孔４１ａは、半径方向において孔３８及びコイルバ
ネ４２内径に干渉しない位置に設けられている。なおそ
の他の構成は上記従来例のものと同様につき説明は省略
する。FIG. 2 is a plan view of the valve mechanism, and the hole 41a provided in the valve 41 is provided at a position that does not interfere with the hole 38 and the inner diameter of the coil spring 42 in the radial direction. Note that the other configurations are the same as those of the above-mentioned conventional example, so explanations will be omitted.
このように構成する事により、圧縮機起動時、液圧縮現
象が発生して圧縮室内の圧力が弁機構の作動圧力を超え
ると、弁４１が浮上し、圧縮室内圧力は、連通孔３８．
弁４１の孔４１ａ、空間４０を介して固定スクロール端
板３ａ上部空間にリリーフされるものである。With this configuration, when a liquid compression phenomenon occurs and the pressure in the compression chamber exceeds the operating pressure of the valve mechanism when the compressor is started, the valve 41 floats up and the pressure in the compression chamber is reduced to the communication hole 38.
It is relieved into the upper space of the fixed scroll end plate 3a through the hole 41a of the valve 41 and the space 40.
以上のようにこの発明によれば、スクロール圧縮機の容
量制御機構としての弁機構を、固定スクロール端板本体
に内装する様に構成したので、装置の組立性の改善及び
コスト低減が図れるとともに、圧縮機のコンパクト化が
できるという効果がある。As described above, according to the present invention, the valve mechanism as the capacity control mechanism of the scroll compressor is configured to be internally installed in the fixed scroll end plate body, so that it is possible to improve the assemblability of the device and reduce costs. This has the effect of making the compressor more compact.
第１図はこの発明の一実施例の要部断面図、第２図はそ
の一部の平面図、第３図は弁形状を示す平面図、第４図
は従来のスクロール圧縮機を示す樅断面図、第５図は従
来の弁ｔＲｔｆ１１部を示す断面図である。
図中、２はシェル、３ａは固定スクロール端板、３ｂは
スクロール側板、１７は圧縮室、４０は凹部空間、４）
は弁、４２はコイルバネ、４３は止め輪である。
なお、図中同一符号は同−又は相当部分を示す。
第１図
２
つ６１シバモ
第５図
０
７Fig. 1 is a sectional view of a main part of an embodiment of the present invention, Fig. 2 is a plan view of a part thereof, Fig. 3 is a plan view showing the shape of the valve, and Fig. 4 is a cross-sectional view of a conventional scroll compressor. 5 is a sectional view showing a portion of a conventional valve tRtf11. In the figure, 2 is a shell, 3a is a fixed scroll end plate, 3b is a scroll side plate, 17 is a compression chamber, 40 is a recessed space, 4)
is a valve, 42 is a coil spring, and 43 is a retaining ring. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 1 2 61 Shivamo Figure 5 0 7
Claims (1)
側板を互いに組合せることにより圧縮室を形成する固定
スクロールと揺動スクロールを備え、上記圧縮室を圧縮
途中において上記固定スクロール端板に付設する弁機構
を介して吸入側に連通させ、容量制御を行うようにした
ものにおいて、上記固定スクロール端板に上記圧縮室と
連通する凹部空間を設け、この凹部空間内に上記弁機構
を内装したことを特徴とするスクロール圧縮機。A fixed scroll and an oscillating scroll are provided, each of which has a spiral side plate protruding from its end plate surface, and which forms a compression chamber by combining the spiral side plates with each other. A valve mechanism attached to the plate communicates with the suction side to perform capacity control, wherein the fixed scroll end plate is provided with a recessed space communicating with the compression chamber, and the valve mechanism is installed in the recessed space. A scroll compressor characterized by having a built-in interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1539890A JPH03222883A (en) | 1990-01-24 | 1990-01-24 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1539890A JPH03222883A (en) | 1990-01-24 | 1990-01-24 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03222883A true JPH03222883A (en) | 1991-10-01 |
Family
ID=11887628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1539890A Pending JPH03222883A (en) | 1990-01-24 | 1990-01-24 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03222883A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597296A (en) * | 1994-11-30 | 1997-01-28 | Matsushita Electric Industrial Co., Ltd. | Scroll compressor having a check valve received in a stationary scroll member recess |
| USRE42371E1 (en) | 2003-09-25 | 2011-05-17 | Emerson Climate Technologies, Inc. | Scroll machine |
| WO2015018268A1 (en) * | 2013-08-07 | 2015-02-12 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
-
1990
- 1990-01-24 JP JP1539890A patent/JPH03222883A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597296A (en) * | 1994-11-30 | 1997-01-28 | Matsushita Electric Industrial Co., Ltd. | Scroll compressor having a check valve received in a stationary scroll member recess |
| USRE42371E1 (en) | 2003-09-25 | 2011-05-17 | Emerson Climate Technologies, Inc. | Scroll machine |
| WO2015018268A1 (en) * | 2013-08-07 | 2015-02-12 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| US10400772B2 (en) | 2013-08-07 | 2019-09-03 | Emerson Climate Technologies (Suzhou) Co., Ltd. | Scroll compressor having valve component arranged in passage of back pressure cavity and providing openings for passage of fluid |
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