JPS6135457B2 - - Google Patents
Info
- Publication number
- JPS6135457B2 JPS6135457B2 JP10660077A JP10660077A JPS6135457B2 JP S6135457 B2 JPS6135457 B2 JP S6135457B2 JP 10660077 A JP10660077 A JP 10660077A JP 10660077 A JP10660077 A JP 10660077A JP S6135457 B2 JPS6135457 B2 JP S6135457B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- refrigerant
- liquid injection
- injection
- injection nozzle
- 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
- 238000002347 injection Methods 0.000 claims description 59
- 239000007924 injection Substances 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 49
- 239000003507 refrigerant Substances 0.000 claims description 43
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 241000282806 Rhinoceros Species 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Compressor (AREA)
Description
【発明の詳細な説明】
本発明はスクリユー圧縮機、ロータリー圧縮機
などの回転容積形圧縮機をそなえる冷凍装置に使
用される冷媒液噴射装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigerant liquid injection device used in a refrigeration system equipped with a rotary positive displacement compressor such as a screw compressor or a rotary compressor.
従来の回転容積形圧縮機をそなえる冷媒装置で
は、凝縮器で液化した冷媒液の一部またはこれに
潤滑油を混入して圧縮機作動室（以下作動室と称
す）内に噴射させて、圧縮ガスの冷却、ロータの
潤滑および密閉を行うことはすでに公知である。 In a conventional refrigerant system equipped with a rotary positive displacement compressor, a part of the refrigerant liquid liquefied in the condenser or a lubricating oil mixed therein is injected into the compressor working chamber (hereinafter referred to as the working chamber) to achieve compression. It is already known to provide gas cooling, rotor lubrication and sealing.
しかし上記のような従来の噴射装置では冷媒液
または潤滑油を含む冷媒液はある容積を持つた状
態すなわち粒状で作動室内に噴射されるため、冷
媒液による熱交換能力が低下する恐れがある。こ
の場合、潤滑油内に溶解する液冷媒量の増加によ
り油の粘度は低下するため、圧縮ガスの漏洩量は
増加して冷凍装置の性能が低下する。 However, in the conventional injection device as described above, the refrigerant liquid or the refrigerant liquid containing lubricating oil is injected into the working chamber in the form of particles having a certain volume, so there is a risk that the heat exchange ability of the refrigerant liquid may be reduced. In this case, the viscosity of the oil decreases due to the increase in the amount of liquid refrigerant dissolved in the lubricating oil, so the leakage amount of compressed gas increases and the performance of the refrigeration system decreases.
さらに、冷媒液は圧縮機に設けた１個の噴射孔
より作動室内へ噴射されるため、噴射時点では冷
却が完全であつても圧縮が進行するに伴つて再び
ガス温度は上昇する。圧縮完了後までを考慮して
冷媒液を噴射すれば、前記のように熱交換されな
い冷媒液が油滑油中に溶解するから性能の低下を
招く恐れがある。 Furthermore, since the refrigerant liquid is injected into the working chamber from one injection hole provided in the compressor, even if cooling is complete at the time of injection, the gas temperature rises again as compression progresses. If the refrigerant liquid is injected until after the compression is completed, the refrigerant liquid that is not subjected to heat exchange will dissolve in the lubricating oil, which may lead to a decrease in performance.
本発明の目的は、冷媒液噴射による冷却作用を
最大限に発揮できる冷媒液噴射装置を提供するこ
とにある。 An object of the present invention is to provide a refrigerant liquid injection device that can maximize the cooling effect of refrigerant liquid injection.
本発明の特徴は、回転容積形圧縮機の作動室に
液を噴射する液噴射ノズル、少くとも２個の液噴
射孔を有し、これらの液噴射孔は、各液噴射孔か
ら噴射される液体同志が衝突するように各噴射孔
の延長線上で交差しているとともに、前記回転容
積形圧縮機の作動室の液噴射ノズルの近傍に温度
検出器を有し、この温度検出器を凝縮器から前記
液噴射ノズルに冷媒液を導入する冷媒流路に配置
された流量制御弁に接続したものである。 The present invention is characterized by having a liquid injection nozzle that injects liquid into the working chamber of a rotary displacement compressor, and at least two liquid injection holes, in which each liquid injection hole injects liquid. The injection holes intersect on the extension line of each injection hole so that the liquids collide with each other, and a temperature sensor is provided near the liquid injection nozzle in the working chamber of the rotary positive displacement compressor, and this temperature sensor is connected to the condenser. The refrigerant flow path is connected to a flow control valve disposed in a refrigerant flow path that introduces refrigerant liquid from the refrigerant to the liquid injection nozzle.
以下本発明の実施例を図面を参照して説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において、１は、スクリユー圧縮機やロ
ータリ圧縮機などの回転容積形圧縮機、２は圧縮
機１を駆動する電動機、３は油分離器、４は凝縮
器、５は膨脹弁、６は蒸発器で、前記各機器１〜
〓〓〓〓
６は順次に冷媒流路７〜１１によりそれぞれ接続
され閉回路を形成している。１３ａ〜１３ｃは、
圧縮機１に取付けられ、圧縮機１の作動室に冷媒
液を噴射するための噴射ノズル、１４ａ〜１４ｃ
は蒸発器４に接続された冷媒液流路１２と噴射ノ
ズル１３ａ〜１３ｃをそれぞれ接続する冷媒液の
分岐流路、１５ａ〜１５ｃは冷媒液分岐流路１４
ａ〜１４ｃにそれぞれ設けられた流量制御弁であ
る。 In FIG. 1, 1 is a rotary displacement compressor such as a screw compressor or a rotary compressor, 2 is an electric motor that drives the compressor 1, 3 is an oil separator, 4 is a condenser, 5 is an expansion valve, and 6 is an evaporator, and each of the above-mentioned devices 1-
〓〓〓〓
6 are sequentially connected by refrigerant channels 7 to 11 to form a closed circuit. 13a to 13c are
Injection nozzles 14a to 14c attached to the compressor 1 for injecting refrigerant liquid into the working chamber of the compressor 1
15a to 15c are refrigerant liquid branch passages connecting the refrigerant liquid passage 12 connected to the evaporator 4 and the injection nozzles 13a to 13c, respectively, and 15a to 15c are refrigerant liquid branch passages 14.
These are flow control valves provided in each of a to 14c.
上記噴射ノズル１３ａ〜１３ｃには第２図に示
すように、中心線が互に交差するように傾斜して
設けられた一対の噴射孔１７ａ，１７ｂが設けら
れている。このように噴射孔１７ａ，１７ｂを傾
斜して設ける代りに、第３図に示すように噴射孔
１７ｃ，１７ｄを衝突室１８の両側面に相対向す
るようにそれぞれ設けてもよい。また第４図に示
すように衝突室１８の両側面および上面に噴射孔
１７ｃ〜１７ｅをそれぞれ設けるようにしてもよ
い。 As shown in FIG. 2, the injection nozzles 13a to 13c are provided with a pair of injection holes 17a and 17b that are inclined so that their center lines intersect with each other. Instead of providing the injection holes 17a and 17b at an angle as described above, injection holes 17c and 17d may be provided on both sides of the collision chamber 18 so as to face each other, respectively, as shown in FIG. Further, as shown in FIG. 4, injection holes 17c to 17e may be provided on both side surfaces and the top surface of the collision chamber 18, respectively.
次に上記構成からなる本実施例の作用について
説明する。 Next, the operation of this embodiment having the above configuration will be explained.
圧縮機１より吐出された高温高圧の油を含有す
る冷媒ガスは流通路７を経て油分離器３へ流入
し、その含有する油を分離される。この油を分離
された冷媒ガスは流路８を経て凝縮器４に流入し
冷却されて液化する。この冷媒液は流路９を経て
膨脹弁５に至り、こゝで膨脹されて低温低圧の冷
媒液となり、さらに流路１０を経て蒸発器６に流
入する。この蒸発器６で蒸発し冷凍サイクルの熱
負荷に対して冷却作用をした冷媒ガスは流路１１
を経て圧縮機１に吸入される。このようにして冷
凍サイクルが構成される。 Refrigerant gas containing high-temperature, high-pressure oil discharged from the compressor 1 flows into the oil separator 3 through the flow path 7, where the oil it contains is separated. The refrigerant gas from which the oil has been separated flows into the condenser 4 through the flow path 8, where it is cooled and liquefied. This refrigerant liquid passes through the flow path 9 to the expansion valve 5, where it is expanded to become a low-temperature, low-pressure refrigerant liquid, and further flows into the evaporator 6 through the flow path 10. The refrigerant gas that has evaporated in the evaporator 6 and has a cooling effect on the heat load of the refrigeration cycle is passed through the flow path 11.
The air is sucked into the compressor 1 through the In this way, a refrigeration cycle is constructed.
この場合、凝縮器４の冷媒液の一部は流路１
２，１４ａ〜１４ｃおよび流量制御弁１５ａ〜１
５ｃを経て噴射ノズル１３ａ〜１３ｃへ流入し、
その各噴射孔１７ａ〜１７ｅより噴射され互に衝
突して霧状となり、圧縮機１の作動室１ａ内に噴
霧されて冷却作用を行う。 In this case, part of the refrigerant liquid in the condenser 4 is transferred to the flow path 1
2, 14a to 14c and flow control valves 15a to 1
5c and flows into the injection nozzles 13a to 13c,
The liquid is injected from each of the injection holes 17a to 17e, collides with each other, becomes a mist, and is sprayed into the working chamber 1a of the compressor 1 to perform a cooling effect.
また、圧縮機１の圧縮が進行するに伴つて、作
動室１ａ内の温度は第５図に示すように上昇する
ので、作動室１ａ内の噴射ノズル１３ａ〜１３ｃ
近傍位置に設けた温度検出器１６ａ〜１６ｃを介
して流量制御弁１５ａ〜１５ｃをそれぞれ操作
し、噴射ノズル１３ａ〜１３ｃから噴射される冷
媒液の噴射量G1〜G3がG1＜G2＜G3となるように
噴霧される。 Further, as the compression of the compressor 1 progresses, the temperature inside the working chamber 1a increases as shown in FIG.
The flow rate control valves 15a to 15c are operated through the temperature detectors 16a to 16c provided in the vicinity, respectively, and the injection amounts G 1 to G 3 of the refrigerant liquid injected from the injection nozzles 13a to 13c are determined such that G 1 <G 2 < G3 .
第６図および第７図に示す他の実施例は噴射ノ
ズル１３ａに混合室２１を設け、この混合室２１
の上面に冷媒液の噴射孔１９を設けると共に、両
側面に潤滑油の噴射孔２０ａ，２０ｂをそれぞれ
対称的に設け、前記噴射孔１９を分岐流路１４
ａ，流路１２を介して凝縮器４に連通させると共
に、前記噴射孔２０ａ，２０ｂを分岐流路２３
ａ、流路２４を介して油分離器３に連通させ、か
つ前記分岐流路１４ａ，２３ａに温度検出器１６
ａにより操作される流量制御弁２２ａを設けたも
のである。上記説明は噴射ノズル１３ａについて
述べたが、噴射ノズル１３ｂ，１３ｃについても
噴射ノズル１３ａと同様に構成されている。その
他の構造は第１図と同一であるから説明を省略す
る。 In another embodiment shown in FIGS. 6 and 7, a mixing chamber 21 is provided in the injection nozzle 13a, and this mixing chamber 21
A refrigerant liquid injection hole 19 is provided on the top surface, and lubricant oil injection holes 20a and 20b are provided symmetrically on both sides, and the injection hole 19 is connected to the branch flow path 14.
a, the injection holes 20a and 20b are connected to the condenser 4 through the flow path 12, and the injection holes 20a and 20b are connected to the branch flow path 23.
a. A temperature sensor 16 is connected to the oil separator 3 through the flow path 24, and is connected to the branch flow paths 14a and 23a.
A flow control valve 22a operated by a is provided. Although the above description has been made regarding the injection nozzle 13a, the injection nozzles 13b and 13c are also configured in the same manner as the injection nozzle 13a. The rest of the structure is the same as that in FIG. 1, so a description thereof will be omitted.
このように構成すれば、噴射孔１９より噴射さ
れた冷媒液と噴射孔２０ａ，２０ｂより噴射され
た潤滑油は混合室２１内で衝突して混合し、霧状
とされた後に作動室１ａ内に噴射される。したが
つて作動室１ａ内で圧縮中の冷媒ガスおよび作動
室１ａ内へ戻される潤滑油を冷却することができ
る。 With this configuration, the refrigerant liquid injected from the injection hole 19 and the lubricant oil injected from the injection holes 20a and 20b collide and mix in the mixing chamber 21, and are atomized into a mist, which is then released into the working chamber 1a. is injected into. Therefore, the refrigerant gas being compressed within the working chamber 1a and the lubricating oil returned to the working chamber 1a can be cooled.
第８図に示す実施例は二組の冷媒液噴射孔１９
ａ，１９ｂと潤滑油噴射孔２０ａ，２０ｂを、そ
の噴口部の中心線が一点に集中するように噴射ノ
ズル１３a4，１３c4に設けたものである。このよ
うに構成すれば、冷媒液と潤滑油をより強大に衝
突させ、より一層霧状とすることができる利点が
ある。 The embodiment shown in FIG. 8 has two sets of refrigerant liquid injection holes 19.
a, 19b and lubricating oil injection holes 20a, 20b are provided in the injection nozzles 13a 4 , 13c 4 so that the center lines of the injection ports are concentrated at one point. With this configuration, there is an advantage that the refrigerant liquid and the lubricating oil can collide more strongly and can be made into a more atomized state.
以上説明したように本発明によれば、作動室内
の温度上昇に適応して噴霧冷媒流量を制御するの
で、冷媒液の噴射による冷却作用を最大限に発揮
できる冷媒液噴射装置を提供することができる。 As explained above, according to the present invention, since the sprayed refrigerant flow rate is controlled in accordance with the temperature rise in the working chamber, it is possible to provide a refrigerant liquid injection device that can maximize the cooling effect by jetting the refrigerant liquid. can.
第１図は本発明の冷媒液噴射装置の一実施例を
使用した冷凍サイクル図、第２図Ａは本発明に使
用される噴射ノズルの断面図、第２図Ｂは第２図
Ａの２Ｂ矢視図、第３図Ａおよび第４図Ａはそれ
ぞれ噴射ノズルの変形例を示す断面図、第３図Ｂ
は第３図Ａの３Ｂ矢視図、第４図Ｂは第４図Ａの
４Ｂ矢視図、第５図は説明用線図、第６図は本発
明の冷媒液噴射装置の他の実施例を示す冷凍サイ
〓〓〓〓
クル図、第７図は第６図の実施例に使用される噴
射ノズルの断面図、第８図Ａは第７図の噴射ノズ
ルの変形例を示す断面図、第８図Ｂは第８図Ａの
８Ｂ矢視図である。
１……圧縮機、１ａ……作動室、１３ａ〜１３
ｃ……噴射ノズル、１７ａ，１７ｂ，１９……冷
媒液噴射孔、１５ａ〜１５ｃ……流量制御弁、１
６ａ〜１６ｃ……温度検出器、２０ａ，２０ｂ…
…潤滑油噴射孔。
〓〓〓〓
Fig. 1 is a refrigeration cycle diagram using an embodiment of the refrigerant liquid injection device of the present invention, Fig. 2A is a sectional view of the injection nozzle used in the present invention, and Fig. 2B is 2B of Fig. 2A. The arrow view, FIG. 3A, and FIG. 4A are sectional views showing modified examples of the injection nozzle, and FIG. 3B, respectively.
4B is a view taken from the 4B arrow in FIG. 3A, FIG. 5 is an explanatory diagram, and FIG. 6 is a diagram showing another embodiment of the refrigerant liquid injection device of the present invention Frozen rhinoceros showing an example〓〓〓〓
FIG. 7 is a sectional view of the injection nozzle used in the embodiment shown in FIG. 6, FIG. 8A is a sectional view showing a modification of the injection nozzle shown in FIG. It is a 8B arrow view of A. 1...Compressor, 1a...Working chamber, 13a-13
c... Injection nozzle, 17a, 17b, 19... Refrigerant liquid injection hole, 15a to 15c... Flow rate control valve, 1
6a to 16c...Temperature detector, 20a, 20b...
...Lubricating oil injection hole. 〓〓〓〓
Claims (1)
回転容積形圧縮機、油分離器，凝縮器，膨脹弁，
蒸発器，凝縮器で液化した冷媒液を前記液噴射ノ
ズルに導入する冷媒流路に備えた冷凍サイクルに
おいて、前記液噴射ノズルは、少くとも２個の液
噴射孔を有し、これらの液噴射孔は、各液噴射孔
から噴出される液体同志が衝突するように、各噴
射孔の長線上で交差しているとともに、前記回転
容積形圧縮機の作動室の液噴射ノズル近傍に温度
検出器を有し、この温度検出器を前記冷媒流路に
配置した流量制御弁に接続したことを特徴とする
冷媒液噴射装置。1 Rotary positive displacement compressor with a liquid injection nozzle that injects liquid into the working chamber, oil separator, condenser, expansion valve,
In a refrigeration cycle equipped with a refrigerant passage that introduces refrigerant liquid liquefied in an evaporator and a condenser into the liquid injection nozzle, the liquid injection nozzle has at least two liquid injection holes, and the liquid injection nozzle has at least two liquid injection holes. The holes intersect on the long line of each injection hole so that the liquid ejected from each injection hole collides with each other, and a temperature sensor is installed near the liquid injection nozzle in the working chamber of the rotary positive displacement compressor. A refrigerant liquid injection device, characterized in that the temperature sensor is connected to a flow control valve disposed in the refrigerant flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10660077A JPS5440347A (en) | 1977-09-07 | 1977-09-07 | Coolant liquid injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10660077A JPS5440347A (en) | 1977-09-07 | 1977-09-07 | Coolant liquid injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5440347A JPS5440347A (en) | 1979-03-29 |
| JPS6135457B2 true JPS6135457B2 (en) | 1986-08-13 |
Family
ID=14437619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10660077A Granted JPS5440347A (en) | 1977-09-07 | 1977-09-07 | Coolant liquid injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5440347A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0170438U (en) * | 1987-10-28 | 1989-05-10 | ||
| JPH0511560U (en) * | 1991-07-26 | 1993-02-12 | 日立電子株式会社 | wireless device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5786046A (en) * | 1980-11-18 | 1982-05-28 | Yokogawa Hokushin Electric Corp | Correction method for base line in process gas chromatography |
| JPS6271841A (en) * | 1985-09-26 | 1987-04-02 | Toray Ind Inc | Oxygen analyzing method |
| JP2010101613A (en) * | 2008-09-26 | 2010-05-06 | Daikin Ind Ltd | Refrigerating apparatus |
| JP6925247B2 (en) * | 2017-12-08 | 2021-08-25 | 株式会社日立製作所 | air compressor |
-
1977
- 1977-09-07 JP JP10660077A patent/JPS5440347A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0170438U (en) * | 1987-10-28 | 1989-05-10 | ||
| JPH0511560U (en) * | 1991-07-26 | 1993-02-12 | 日立電子株式会社 | wireless device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5440347A (en) | 1979-03-29 |
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