JPH0229263Y2 - - Google Patents
Info
- Publication number
- JPH0229263Y2 JPH0229263Y2 JP1984099788U JP9978884U JPH0229263Y2 JP H0229263 Y2 JPH0229263 Y2 JP H0229263Y2 JP 1984099788 U JP1984099788 U JP 1984099788U JP 9978884 U JP9978884 U JP 9978884U JP H0229263 Y2 JPH0229263 Y2 JP H0229263Y2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- compression element
- heat exchanger
- lubricating oil
- rotary
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 39
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 18
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Compressor (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
この考案は回転圧縮機の冷却装置の改良に関す
る。[Detailed description of the invention] (a) Industrial application field This invention relates to improvement of a cooling device for a rotary compressor.
(ロ) 従来の技術
従来一般の回転圧縮機はこの回転圧縮機で圧縮
した冷媒を外部に排出し、中間冷却器で冷却した
後に、密閉容器内に流入させている。そしてこの
中間冷却器で冷却された冷媒で回転圧縮機が冷却
されるようになつている。(b) Prior Art Conventional rotary compressors discharge the compressed refrigerant to the outside, cool it in an intercooler, and then flow it into a closed container. The rotary compressor is then cooled with the refrigerant cooled by the intercooler.
しかしながら、回転圧縮機は密閉容器内の圧力
が一定圧力以上にならないと、この密閉容器内か
ら冷媒が外部冷却回路に流出しないため、回転圧
縮機の起動時にはこの回転圧縮機で圧縮された冷
媒が中間冷却器で冷却されて減圧され、回転圧縮
機の圧力がなかなか上昇しないため、立上り特性
が悪くなる問題があつた（例えば実公昭47−
12763号公報参照）。 However, in a rotary compressor, the refrigerant will not flow out from the sealed container to the external cooling circuit unless the pressure inside the sealed container exceeds a certain pressure. Because the pressure in the rotary compressor did not rise easily after being cooled and depressurized by the intercooler, there was a problem with poor start-up characteristics (for example,
(See Publication No. 12763).
また、立上り特性を向上させるために、圧縮機
の潤滑油中に熱交換器を配置して、この熱交換器
で圧縮機全体を冷却するようにしていたが、この
場合には圧縮機の高さが高くなる問題があつた。 In addition, in order to improve the start-up characteristics, a heat exchanger was placed in the lubricating oil of the compressor, and this heat exchanger cooled the entire compressor. I had a problem with the height becoming high.
（例えば実公昭58−23988号公報参照）。(For example, see Utility Model Publication No. 58-23988).
更に、密閉容器から排出されて冷却された液冷
媒を熱交換器に導入すると共に、この導入された
液冷媒を潤滑油の熱で蒸発させ容器内へ吐出させ
ることにより、回転圧縮要素の冷却を行つたもの
があるが、この場合、冷媒の液化、蒸発による潜
熱を利用した自然対流だけによる冷媒の循環であ
るため、外気温度が高いとき等は意とするような
冷却効果が得られないという問題があつた。（実
開昭58−45990号公報参照）
(ハ) 考案の目的
この考案の目的は、潤滑油を冷却する熱交換器
を回転圧縮機の余剰空間に形成して圧縮機の小型
化を促進すると共に、回転圧縮要素の一部を熱交
換器として該要素を直に冷却し、かつ、冷媒回路
自体を流れる冷媒流を利用した強制循環方式を採
用することにより冷媒の潜熱と顕熱の双方を利用
して回転圧縮要素の冷却を行うことができるよう
にして冷却性能を向上することである。 Furthermore, the cooled liquid refrigerant discharged from the sealed container is introduced into the heat exchanger, and the introduced liquid refrigerant is evaporated by the heat of the lubricating oil and discharged into the container, thereby cooling the rotary compression element. However, in this case, the refrigerant is circulated only by natural convection that utilizes the latent heat from liquefaction and evaporation of the refrigerant, so it is said that the desired cooling effect cannot be obtained when the outside temperature is high. There was a problem. (Refer to Utility Model Application Publication No. 58-45990.) (c) Purpose of the invention The purpose of this invention is to promote downsizing of the rotary compressor by forming a heat exchanger for cooling lubricating oil in the excess space of the rotary compressor. At the same time, by using a part of the rotary compression element as a heat exchanger to directly cool the element, and by adopting a forced circulation method that utilizes the refrigerant flow flowing through the refrigerant circuit itself, both latent heat and sensible heat of the refrigerant can be absorbed. The purpose of the present invention is to improve the cooling performance by making it possible to cool the rotary compression element by utilizing the rotary compression element.
(ニ) 考案の構成
本案は、電動要素と回転圧縮要素とを収納する
密閉容器内の底部に潤滑油を貯溜し、この潤滑油
中に熱交換器を配置した回転圧縮機において、こ
の熱交換器は、回転圧縮要素の軸受部に形成され
てなり、かつ、密閉容器から一旦吐出されて冷却
された冷媒を導入すると共に、熱交換した冷媒を
外部冷媒回路へ導出するように構成したことによ
り、潤滑油を冷却する熱交換器を回転圧縮機の余
剰空間に形成して圧縮機の小型化を促進すると共
に、回転圧縮要素の一部を熱交換器として該要素
を直に冷却し、かつ、冷媒回路自体を流れる冷媒
流を利用した強制循環方式を採用することにより
冷媒の潜熱と顕熱の双方を利用して回転圧縮要素
の冷却を行うことができ、冷却性能を向上するこ
とができるものである。(d) Structure of the invention This invention is a rotary compressor in which lubricating oil is stored at the bottom of a closed container that houses an electric element and a rotary compression element, and a heat exchanger is disposed in this lubricating oil. The refrigerant is formed in the bearing part of the rotary compression element, and is configured to introduce the cooled refrigerant once discharged from the closed container, and to lead out the refrigerant that has undergone heat exchange to the external refrigerant circuit. , a heat exchanger for cooling the lubricating oil is formed in the surplus space of the rotary compressor to promote downsizing of the compressor, and a part of the rotary compression element is used as a heat exchanger to directly cool the element, and By adopting a forced circulation method that utilizes the refrigerant flow flowing through the refrigerant circuit itself, the rotary compression element can be cooled using both the latent heat and sensible heat of the refrigerant, improving cooling performance. It is something.
(ホ) 実施例
以下この考案を第１図乃至第３図に示す実施例
に基づいて説明する。(E) Embodiment This invention will be explained below based on the embodiment shown in FIGS. 1 to 3.
１は回転圧縮機、２は第１凝縮器、３は後述す
る潤滑油４を冷却する熱交換器、５は第２凝縮
器、６はキヤピラリチユーブ等の減圧装置、７は
蒸発器で、これらは順次配管接続されて冷凍回路
８を構成している。回転圧縮機１は密閉容器９
と、この密閉容器内に収納された電動要素１０と
回転圧縮要素１１とにより構成されている。密閉
容器９内の底部には潤滑油４が貯溜されている。
回転圧縮要素１１はシリンダ１２と、回転軸１３
の偏心部１４によりシリンダ１２内を回転するロ
ーラ１５と、シリンダ１２の開口部を閉塞する上
軸受部１６と下軸受部１７とにより構成されてい
る。１８は上軸受部１６に取付けられた吐出弁１
９を覆うように設けられたカツプマフラー体であ
る。２０はシリンダ１２に穿設された液冷媒の流
入孔で、この流入孔には第１凝縮器２の出口側と
接続された接続管２１が接続されている。２２は
シリンダ１２に穿設された液冷媒の流出孔で、こ
の流出孔には第２凝縮器５の入口側と接続された
接続管２３が接続されている。熱交換器３は下軸
受部１７の外周に設けた環状側壁２４と、この側
壁の開口部を閉塞する蓋体２５とで形成されてい
る。２６は環状に形成された熱交換器３内を仕切
る仕切壁である。熱交換器３内の空間２７はシリ
ンダ１２と下軸受部１７とを貫通した連通孔２
８，２９で夫々流入孔２０と流出孔２２とに連通
している。 1 is a rotary compressor, 2 is a first condenser, 3 is a heat exchanger for cooling lubricating oil 4, which will be described later, 5 is a second condenser, 6 is a pressure reducing device such as a capillary tube, 7 is an evaporator, These are sequentially connected via piping to form a refrigeration circuit 8. The rotary compressor 1 is a closed container 9
It is composed of an electric element 10 and a rotary compression element 11 housed in this airtight container. Lubricating oil 4 is stored at the bottom of the closed container 9.
The rotary compression element 11 includes a cylinder 12 and a rotating shaft 13.
It is composed of a roller 15 that rotates inside the cylinder 12 by an eccentric part 14, and an upper bearing part 16 and a lower bearing part 17 that close the opening of the cylinder 12. 18 is a discharge valve 1 attached to the upper bearing part 16
This is a cup muffler body provided to cover 9. Reference numeral 20 denotes an inflow hole for liquid refrigerant formed in the cylinder 12, and a connecting pipe 21 connected to the outlet side of the first condenser 2 is connected to this inflow hole. Reference numeral 22 denotes a liquid refrigerant outlet hole formed in the cylinder 12, and a connecting pipe 23 connected to the inlet side of the second condenser 5 is connected to this outlet hole. The heat exchanger 3 is formed of an annular side wall 24 provided around the outer periphery of the lower bearing portion 17 and a lid 25 that closes an opening in the side wall. 26 is a partition wall that partitions the inside of the heat exchanger 3 formed into an annular shape. A space 27 inside the heat exchanger 3 is a communication hole 2 that passes through the cylinder 12 and the lower bearing part 17.
8 and 29 communicate with the inflow hole 20 and the outflow hole 22, respectively.
このように構成された回転圧縮機の冷却装置に
おいて、シリンダ１２内でローラ１５の回転によ
り圧縮された冷媒は吐出弁１９を開放してカツプ
マフラー体１８内に流出した後、密閉容器９内に
排出される。密閉容器９内に排出された冷媒はこ
の密閉容器内の圧力が一定圧力以上になると、第
１凝縮器２に流出して液化される。この第１凝縮
器で液化された冷媒は熱交換器３内に流入し、気
化熱で潤滑油４を冷却して第２凝縮器５に流入
し、ここで再度凝縮させられる。ここで、熱交換
器３は冷媒回路自体を流れる冷媒を利用した強制
循環による冷却方式であるため、冷媒の潜熱と顕
熱の双方を利用して回転圧縮要素１１の冷却を行
つている。そして、第２凝縮器５にて液化された
冷媒は減圧装置６で減圧され、蒸発器７で蒸発気
化して冷却作用を行う。そして、蒸発気化した冷
媒は回転圧縮機１に帰還する。 In the cooling device for a rotary compressor configured as described above, the refrigerant compressed in the cylinder 12 by the rotation of the roller 15 opens the discharge valve 19 and flows out into the cup muffler body 18, and then flows into the closed container 9. It is discharged. When the pressure inside the closed container 9 exceeds a certain pressure, the refrigerant discharged into the closed container 9 flows into the first condenser 2 and is liquefied. The refrigerant liquefied in the first condenser flows into the heat exchanger 3, cools the lubricating oil 4 with the heat of vaporization, and flows into the second condenser 5, where it is condensed again. Here, since the heat exchanger 3 uses a forced circulation cooling method using the refrigerant flowing through the refrigerant circuit itself, the rotary compression element 11 is cooled using both the latent heat and sensible heat of the refrigerant. Then, the refrigerant liquefied in the second condenser 5 is depressurized in a pressure reducing device 6, and evaporated in an evaporator 7 to perform a cooling effect. The evaporated refrigerant then returns to the rotary compressor 1.
この考案の回転圧縮機１は上記の如く、熱交換
器３は、軸受部１７や蓋体２５を利用して回転圧
縮要素１１に直に形成されており、しかも、冷媒
回路自体を流れる冷媒流を利用した強制循環によ
る冷却方式により冷媒の潜熱と顕熱の双方を利用
して回転圧縮要素１１の冷却を行うものであるた
め、従来構成のように中間冷却器にて冷却された
潤滑油で間接的に回転圧縮要素の冷却を行うもの
や、冷媒の変化、蒸発による潜熱だけを利用した
自然対流によつて回転圧縮要素の冷却を行うもの
に比して、冷却効果を向上できる。 As described above, in the rotary compressor 1 of this invention, the heat exchanger 3 is formed directly on the rotary compression element 11 using the bearing part 17 and the lid 25, and the refrigerant flow through the refrigerant circuit itself. Since the rotary compression element 11 is cooled by a forced circulation cooling method using both latent heat and sensible heat of the refrigerant, unlike the conventional configuration, lubricating oil cooled by an intercooler is not used. The cooling effect can be improved compared to those that cool the rotary compression element indirectly or those that cool the rotary compression element by natural convection using only latent heat due to changes in the refrigerant and evaporation.
熱交換器３は下軸受部１７の環状側壁２４と、
この側壁の開口部を閉塞する蓋体２５とで形成し
ているため、回転圧縮要素１１のシリンダ１２を
直接冷却出きるようになつている。また、熱交換
器３は密閉容器９内の余剰空間に形成しているた
め、この熱交換器を取付けることによつて密閉容
器９の高さが高くならないようになつている。 The heat exchanger 3 includes an annular side wall 24 of the lower bearing portion 17,
Since the side wall is formed with a lid 25 that closes the opening, the cylinder 12 of the rotary compression element 11 can be directly cooled. Moreover, since the heat exchanger 3 is formed in the surplus space within the closed container 9, the height of the closed container 9 is not increased by installing this heat exchanger.
(ヘ) 考案の効果
この考案の回転圧縮機の冷却装置は回転圧縮要
素の軸受部と、この軸受部を閉塞する蓋体とで潤
滑油を冷却する熱交換器を形成したのであるか
ら、熱交換器を密閉容器内の余剰空間に形成でき
ると共に、第１凝縮器で液化された冷媒にて回転
圧縮要素を直接的に冷却できる。加えて、本案に
よれば、冷媒回路自体を流れる冷媒流を利用した
強制循環となるので、冷媒の潜熱と顕熱の双方を
利用して回転圧縮要素の冷却を直接行うことがで
き、従来構成のように中間冷却器にて冷却された
潤滑油で間接的に回転圧縮要素の冷却を行うもの
や、冷媒の液化、蒸発による潜熱だけを利用した
自然対流によつて回転圧縮要素の冷却を行うもの
に比して、冷却効果をより一層向上することがで
きる。(F) Effect of the invention The cooling device for a rotary compressor of this invention forms a heat exchanger for cooling lubricating oil with the bearing of the rotary compression element and the lid that closes this bearing. The exchanger can be formed in the surplus space within the closed container, and the rotary compression element can be directly cooled with the refrigerant liquefied in the first condenser. In addition, according to the present invention, since forced circulation is performed using the refrigerant flow flowing through the refrigerant circuit itself, the rotary compression element can be directly cooled using both the latent heat and sensible heat of the refrigerant, which is different from the conventional configuration. The rotary compression element is cooled indirectly by lubricating oil cooled in an intercooler, and the rotary compression element is cooled by natural convection using only the latent heat from liquefaction and evaporation of the refrigerant. The cooling effect can be further improved compared to the conventional one.
第１図乃至第３図はこの考案を示し、第１図は
冷凍回路図、第２図は回転圧縮機の縦断面図、第
３図は第２図の−′線断面図である。
１……回転圧縮機、３……熱交換器、４……潤
滑油、９……密閉容器、１０……電動要素、１１
……回転圧縮要素、１７……下軸受部、２４……
環状側壁、２５……蓋体。
1 to 3 illustrate this invention, with FIG. 1 being a refrigeration circuit diagram, FIG. 2 being a longitudinal sectional view of the rotary compressor, and FIG. 3 being a sectional view taken along the line -' in FIG. 1... Rotary compressor, 3... Heat exchanger, 4... Lubricating oil, 9... Sealed container, 10... Electric element, 11
... Rotating compression element, 17 ... Lower bearing part, 24 ...
Annular side wall, 25...lid body.
Claims (1)
内の底部に潤滑油を貯溜し、この潤滑油中に熱交
換器を配置した回転圧縮機において、この熱交換
器は、回転圧縮要素の軸受部に形成されてなり、
かつ、密閉容器から一旦吐出されて冷却された冷
媒を導入すると共に、熱交換した冷媒を外部冷媒
回路へ導出するよう構成されていることを特徴と
する回転圧縮機の冷却装置。 In a rotary compressor, lubricating oil is stored at the bottom of a closed container that houses an electric element and a rotary compression element, and a heat exchanger is disposed in this lubricating oil. formed into
A cooling device for a rotary compressor, characterized in that it is configured to introduce the cooled refrigerant once discharged from the airtight container and to lead out the refrigerant with which heat has been exchanged to an external refrigerant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9978884U JPS6114795U (en) | 1984-07-02 | 1984-07-02 | Rotary compressor cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9978884U JPS6114795U (en) | 1984-07-02 | 1984-07-02 | Rotary compressor cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6114795U JPS6114795U (en) | 1986-01-28 |
| JPH0229263Y2 true JPH0229263Y2 (en) | 1990-08-06 |
Family
ID=30659277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9978884U Granted JPS6114795U (en) | 1984-07-02 | 1984-07-02 | Rotary compressor cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114795U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI1100416A2 (en) * | 2011-02-22 | 2013-12-03 | Whilrpool S A | COMPRESSOR COOLING SYSTEM USING PRE-CONDENSER, AND COMPRESSOR PROVIDED OF COOLING SYSTEM |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845990B2 (en) * | 1975-12-09 | 1983-10-13 | ダイセル化学工業株式会社 | Sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845990U (en) * | 1981-09-25 | 1983-03-28 | 三菱重工業株式会社 | rotary compressor |
-
1984
- 1984-07-02 JP JP9978884U patent/JPS6114795U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845990B2 (en) * | 1975-12-09 | 1983-10-13 | ダイセル化学工業株式会社 | Sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114795U (en) | 1986-01-28 |
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