JPS6078255A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS6078255A JPS6078255A JP18300983A JP18300983A JPS6078255A JP S6078255 A JPS6078255 A JP S6078255A JP 18300983 A JP18300983 A JP 18300983A JP 18300983 A JP18300983 A JP 18300983A JP S6078255 A JPS6078255 A JP S6078255A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- gas
- way valve
- liquid separator
- air conditioner
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は気液分離器の冷媒ガスを圧縮機へインジェクシ
ョンさせるインジェクシ冒ン回路を有する空気調和機に
係り、特に圧縮機としてスクロール圧縮機などの回転式
圧縮機を使用する場合に好適な空気調和機に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an air conditioner having an injection circuit for injecting refrigerant gas from a gas-liquid separator into a compressor. The present invention relates to an air conditioner suitable for using a rotary compressor.
従来のガスインジェクション回路を有する空気調和機に
おいて、気液分離器の冷媒ガスを圧縮機へインジェクシ
ョンさせるインジェクション管の途中または減Ｅ６と気
液分離器との間に設けられる二方弁は、一般に冷凍能力
の容量側（財）を行うために使われる。つまシ、冷凍能
力を多く必要とする時には前記二方弁を開き、冷凍能力
をあまり必要としない時あるいは圧縮機に過大な負荷が
かかり該圧縮機が過熱気味になる過負荷時には二方弁を
閉じ製いった開閉制御がなされる。この二方弁の制御は
あくまでも圧縮機が運転されている場合の開閉制御であ
り、温度調節器により圧縮機が停止した際には二方弁は
開いているのが一般的であった。しかるに、圧縮機とし
てスクロール圧縮機などの回転式圧縮機が使用された場
合、回転式圧縮機は高低圧の田カバランスが早いため、
気液分離器内よυも圧縮機内の圧力が早く下がり、運転
時に溜っていた気液分離器内の液冷媒が、インジェクシ
ョン管を通って圧縮機内に流入する。このため、温度調
節器の復帰により圧縮機が再起動した場合、液圧縮を起
し、圧縮機寿命を著しく短かくするという問題があった
。In an air conditioner with a conventional gas injection circuit, a two-way valve installed in the middle of the injection pipe for injecting the refrigerant gas of the gas-liquid separator into the compressor or between the reduction E6 and the gas-liquid separator is generally used for refrigerating. It is used to perform the capacity side (goods) of ability. When a large amount of refrigeration capacity is required, open the two-way valve, and when less refrigeration capacity is required, or when the compressor is overloaded and the compressor tends to overheat, open the two-way valve. Opening/closing control is performed. Control of this two-way valve is strictly an opening/closing control when the compressor is in operation, and the two-way valve is generally open when the compressor is stopped by the temperature regulator. However, when a rotary compressor such as a scroll compressor is used as a compressor, the rotary compressor balances high and low pressure quickly, so
The pressure inside the gas-liquid separator and the compressor drop quickly, and the liquid refrigerant that had accumulated in the gas-liquid separator during operation flows into the compressor through the injection pipe. For this reason, when the compressor is restarted due to the return of the temperature regulator, there is a problem in that liquid compression occurs and the life of the compressor is significantly shortened.
本発明の目的は、圧縮機の停止時に気液分離器内の液冷
媒が圧縮機内に流入しないよう二方弁を制御し、再起動
の際の液圧縮を防止できる空気調和機を提供することに
ある。An object of the present invention is to provide an air conditioner that can control a two-way valve so that liquid refrigerant in a gas-liquid separator does not flow into the compressor when the compressor is stopped, and prevent liquid compression when restarting the compressor. It is in.
この目的を達成するために、本発明の空気調和機は、二
方弁を圧縮機の停止と同時に閉じるように構成したこと
を特徴とする。In order to achieve this object, the air conditioner of the present invention is characterized in that the two-way valve is configured to close at the same time as the compressor stops.
以下、本発明の一実施例を図面により説明する。第１図
は空気調和機の冷凍サイクル系統図、第２図は第１図に
おける圧縮機の運転、停止の動作及び二方弁の開閉動作
を表わす説明図である。第１図において、圧縮機１、凝
縮器２、減圧器３Ａ、気液分離器４、減圧器３Ｂ、蒸発
層５は、その順序に配管６を介して接続された冷凍サイ
クルを形成している。また気液分離器４と圧縮機１とは
、途中に二方弁８を具えたインジェクション管７を介し
て接続され、気液分離器４で分離された冷媒ガスをイン
ジェクション管７及び二方弁８を通して圧縮機１に流し
、冷凍能力を増大させられるようになっている。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a refrigeration cycle system diagram of an air conditioner, and FIG. 2 is an explanatory diagram showing the operating and stopping operations of the compressor and the opening and closing operations of the two-way valve in FIG. 1. In FIG. 1, a compressor 1, a condenser 2, a pressure reducer 3A, a gas-liquid separator 4, a pressure reducer 3B, and an evaporation layer 5 are connected in that order via piping 6 to form a refrigeration cycle. . Further, the gas-liquid separator 4 and the compressor 1 are connected via an injection pipe 7 having a two-way valve 8 in the middle, and the refrigerant gas separated by the gas-liquid separator 4 is transferred to the injection pipe 7 and the two-way valve. 8 to the compressor 1 to increase the refrigerating capacity.
前記三方弁８は、第２図に示す如く、圧縮機１の運転中
は開き、圧縮機１の停止と同時に閉じるように構成され
ている。As shown in FIG. 2, the three-way valve 8 is configured to open when the compressor 1 is in operation and close when the compressor 1 is stopped.
しかるに、本発明による空気調和機において、圧縮機１
が温度調節器（図示せず）の作動により停止すると、同
時に二方弁８が閉じ、気液分離器４内の液冷媒がインジ
ェクション管７を介して圧縮機１内に流入するのを防止
する。その後、温度調節器が復帰して圧縮機１が再起動
すると、同時に二方弁８が開き、通常の運転を開始する
。従って、圧縮機１の停止中は、インジェクション管７
が二方弁８により閉塞され、運転時に溜まった気液分離
器４内の液冷媒が圧縮機１１に流入することがないので
、圧縮機再起動時の液圧縮が防止される。However, in the air conditioner according to the present invention, the compressor 1
When the refrigerant is stopped by the operation of a temperature regulator (not shown), the two-way valve 8 is closed at the same time, preventing the liquid refrigerant in the gas-liquid separator 4 from flowing into the compressor 1 through the injection pipe 7. . Thereafter, when the temperature regulator returns and the compressor 1 is restarted, the two-way valve 8 is simultaneously opened and normal operation begins. Therefore, while the compressor 1 is stopped, the injection pipe 7
is closed by the two-way valve 8, and the liquid refrigerant accumulated in the gas-liquid separator 4 during operation does not flow into the compressor 11, thereby preventing liquid compression when the compressor is restarted.
同、前記の実施例では、二方弁８がインジェク、−３−
ジョン管７の途中に設けられた例を示したが、該二方弁
８を減圧器３Ａと気液分離器４との間に設けるものにつ
いても、前述と同様の効果を達成できる。In the above embodiment, the two-way valve 8 was installed in the middle of the injector and -3- John pipe 7, but the two-way valve 8 was installed between the pressure reducer 3A and the gas-liquid separator 4. The same effects as described above can also be achieved with those provided in between.
以上説明したように、本発明によれば、圧縮機の停止時
は三方弁が閉じてインジェクシ目ン回路を閉塞するので
、気液分離器内の液冷媒の圧縮機への流入がなくなシ、
圧縮機再起動時の液圧縮が防止され、圧縮機の寿命を長
く保てる。As explained above, according to the present invention, when the compressor is stopped, the three-way valve closes and blocks the injector eye circuit, so the liquid refrigerant in the gas-liquid separator does not flow into the compressor, and the system ,
This prevents liquid compression when restarting the compressor, extending the life of the compressor.
第１図は本発明が対象とする空気調和機の冷凍サイクル
を示す系統図、第２図は本発明における圧縮機の運転、
停止の動作及び二方弁の開閉動作を表わす説明図である
。
１・・・圧縮機 ２・・・凝縮器 ３Ａ、３Ｂ・・・減
圧器４・・・気液分離器 ５・・・蒸発器 ６・・・配
管 ７・・・インジェクション管 ８・・・二方弁。
、−４−FIG. 1 is a system diagram showing the refrigeration cycle of an air conditioner targeted by the present invention, and FIG. 2 shows the operation of the compressor in the present invention,
It is an explanatory view showing a stop operation and an opening/closing operation of a two-way valve. 1... Compressor 2... Condenser 3A, 3B... Pressure reducer 4... Gas-liquid separator 5... Evaporator 6... Piping 7... Injection pipe 8... Two Dialect. , -4-
Claims (1)
配管接続して冷凍サイクルを形成すると共に、気液分離
器と圧縮機とをインジェクション管を介して接続し、か
つ該インジェクション管の途中または減圧器と気液分離
器との間に二方弁を設けた空気調和機において、前記二
方弁を圧縮機の停止と同時に閉じるように構成したこと
を特徴とする空気調和機。A compressor, a condenser, a pressure reducer, a gas-liquid separator, an evaporator, etc. are sequentially connected via piping to form a refrigeration cycle, and the gas-liquid separator and the compressor are connected via an injection pipe, and the injection An air conditioner in which a two-way valve is provided in the middle of a pipe or between a pressure reducer and a gas-liquid separator, characterized in that the two-way valve is configured to be closed at the same time as the compressor is stopped. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18300983A JPS6078255A (en) | 1983-10-03 | 1983-10-03 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18300983A JPS6078255A (en) | 1983-10-03 | 1983-10-03 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6078255A true JPS6078255A (en) | 1985-05-02 |
Family
ID=16128140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18300983A Pending JPS6078255A (en) | 1983-10-03 | 1983-10-03 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6078255A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10220677B2 (en) | 2015-02-24 | 2019-03-05 | Denso Corporation | Vehicle air conditioner having a gas injection cycle |
| US10801497B2 (en) | 2015-07-31 | 2020-10-13 | Denso Corporation | Electric compressor controller and refrigeration cycle device |
-
1983
- 1983-10-03 JP JP18300983A patent/JPS6078255A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10220677B2 (en) | 2015-02-24 | 2019-03-05 | Denso Corporation | Vehicle air conditioner having a gas injection cycle |
| US10801497B2 (en) | 2015-07-31 | 2020-10-13 | Denso Corporation | Electric compressor controller and refrigeration cycle device |
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