JP2877412B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2877412B2 JP2877412B2 JP2012921A JP1292190A JP2877412B2 JP 2877412 B2 JP2877412 B2 JP 2877412B2 JP 2012921 A JP2012921 A JP 2012921A JP 1292190 A JP1292190 A JP 1292190A JP 2877412 B2 JP2877412 B2 JP 2877412B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- electronic expansion
- expansion valve
- air conditioner
- capacity
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
Description
【発明の詳細な説明】 （イ）産業上の利用分野 この発明は、空気調和装置に関するものである。The present invention relates to an air conditioner.
（ロ）従来の技術 空気調和装置の従来技術としては、特公昭59−16189
号公報に記載されているようなものがあり、この空気調
和装置は、圧縮機、室外熱交換器、絞り装置、室内熱交
換器を配管接続して構成した冷凍サイクルを備えてお
り、前記絞り装置を制御して冷凍サイクルでの冷媒循環
量を調節しているものである。(B) Conventional technology As a conventional technology of an air conditioner, there is Japanese Patent Publication No. 59-16189.
The air conditioner includes a refrigeration cycle configured by connecting a compressor, an outdoor heat exchanger, a throttling device, and an indoor heat exchanger with piping, The apparatus controls the amount of circulating refrigerant in the refrigeration cycle.
（ハ）発明が解決しようとする課題 前述した空気調和装置において、絞り装置として、冷
媒循環量を制御するために温度により開度が制御される
温度式の膨張弁を使用していた。このような膨張弁の使
用においては、温度による弁開度の制御であるため、制
御に時間的な遅れが大きく、ハンチングが多くなるとい
う欠点があった。また、冷媒流量を連続的に、かつ、任
意に制御できないという欠点があった。(C) Problems to be Solved by the Invention In the above-described air conditioner, a temperature-type expansion valve whose opening degree is controlled by temperature to control the amount of circulating refrigerant is used as the expansion device. In the use of such an expansion valve, since the valve opening is controlled by the temperature, there is a drawback that the control has a large time delay and hunting increases. Further, there is a disadvantage that the flow rate of the refrigerant cannot be continuously and arbitrarily controlled.
前述した空気調和装置において、冷媒流量を連続的
に、かつ、任意に制御できる電子膨張弁を使用すること
も考えられ、モータの駆動により弁の開度が制御される
この電子膨張弁で制御する冷媒流量を大きくしようとし
て、大容量の電子膨張弁を使用すれば、大きなトルクが
必要となり、また、コスト〔例えば、通常使用している
電子膨張弁は数千円程度、大容量の電子膨張弁はその倍
程度、あるいはそれ以上〕等の点で実際に使用するには
困難である。In the above-described air conditioner, it is conceivable to use an electronic expansion valve that can continuously and arbitrarily control the flow rate of the refrigerant, and controls the opening degree of the valve by driving a motor. If a large-capacity electronic expansion valve is used in an attempt to increase the refrigerant flow rate, a large torque is required, and the cost [for example, a normally used electronic expansion valve is several thousands yen, a large-capacity electronic expansion valve is required. Is about twice or more than that], which is difficult to use in practice.
また、このような空気調和装置を高層ビルに配置しよ
うとすると、例えば25階程度のビルの場合100m程度まで
の高低差が必要となるが暖房運転時液柱分の圧損が大き
いと、絞り装置の容量不足が生じ、運転できないことが
あるという欠点があった。最近のビル用のマルチタイプ
の空気調和装置での電子膨張弁の使用は高低差50m程度
が、正常に制御できる限界である。In addition, if such an air conditioner is to be arranged in a high-rise building, for example, in the case of a building having about 25 floors, a height difference of up to about 100 m is required. However, there is a disadvantage that the capacity may be insufficient and the operation may not be performed. The use of electronic expansion valves in recent multi-type air conditioners for buildings has a height difference of about 50 m, which is the limit of normal control.
この発明は、冷媒循環量の大容量制御を安価に実現で
き、かつ、冷媒流量を連続的に制御できる空気調和装置
を提供するものである。An object of the present invention is to provide an air conditioner that can realize large-capacity control of the amount of circulating refrigerant at low cost and that can continuously control the flow rate of refrigerant.
（ニ）課題を解決するための手段 本発明は前述した従来技術の課題を解決するために為
されたものであり、圧縮機、凝縮機、連続的に冷媒循環
量を制御する電子膨張弁、蒸発器を接続して構成した冷
凍サイクルを有している空気調和装置において、前記電
子膨張弁と同容量の開閉弁を前記電子膨張弁に並列に接
続したことを特徴とする。(D) Means for Solving the Problems The present invention has been made to solve the above-mentioned problems of the prior art, and includes a compressor, a condenser, an electronic expansion valve for continuously controlling a refrigerant circulation amount, In an air conditioner having a refrigeration cycle configured by connecting an evaporator, an on-off valve having the same capacity as the electronic expansion valve is connected in parallel to the electronic expansion valve.
（ホ）作用 この発明による空気調和装置においては、冷媒循環量
が電子膨張弁の容量以下の小容量のときには、開閉弁が
閉じられていると共に、電子膨張弁が制御され、また冷
媒循環量が電子膨張弁の容量を越える大容量のときに
は、開閉弁が開かれると共に、電子膨張弁が制御されて
小容量から大容量まで冷媒循環量が連続的に制御され
る。(E) Action In the air conditioner according to the present invention, when the refrigerant circulation amount is small, not more than the capacity of the electronic expansion valve, the on-off valve is closed, the electronic expansion valve is controlled, and the refrigerant circulation amount is reduced. When the capacity is larger than the capacity of the electronic expansion valve, the on-off valve is opened, and the electronic expansion valve is controlled to continuously control the refrigerant circulation amount from the small capacity to the large capacity.
（へ）実施例 この発明の実施例を図面と共に説明する。第１図はこ
の発明による空気調和装置の冷媒回路図で、この発明の
空気調和装置は、室外ユニット（Ａ）と、室内ユニット
（Ｂ）とを備えているものである。(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a refrigerant circuit diagram of an air conditioner according to the present invention. The air conditioner according to the present invention includes an outdoor unit (A) and an indoor unit (B).
（１）は圧縮機、（２）はこの圧縮機の吸入側に設け
られたアキュームレータ、（３）は暖房運転や冷房運転
に応じて冷媒の流路を切換える四方弁、（４）は室外熱
交換器、（５）は減圧装置として働く電子膨張弁〔電動
弁〕、（６）はレシーバタンク、（７）は前記電子膨張
弁（５）部にこの電子膨張弁（５）と並列に設けられた
バイパス管、（８）はこのバイパス管に設けられた開閉
弁〔電磁弁〕で、この開閉弁は容量が前記電子制御弁
（５）の容量と同じものである。(1) is a compressor, (2) is an accumulator provided on the suction side of the compressor, (3) is a four-way valve that switches the flow path of the refrigerant according to heating operation or cooling operation, and (4) is outdoor heat. An exchanger, (5) an electronic expansion valve (electrically operated valve) serving as a pressure reducing device, (6) a receiver tank, and (7) provided in the electronic expansion valve (5) in parallel with the electronic expansion valve (5). The bypass pipe (8) is an on-off valve (solenoid valve) provided in the bypass pipe, and the on-off valve has the same capacity as that of the electronic control valve (5).
（９）（10）はそれぞれ室内ユニット（Ｂ）に設けら
れている室内熱交換器、電動弁である。(9) and (10) are an indoor heat exchanger and an electric valve provided in the indoor unit (B), respectively.
（11）は前記電子膨張弁（５）の開度と、開閉弁
（７）の開閉を制御する制御装置である。(11) is a control device for controlling the opening of the electronic expansion valve (5) and the opening and closing of the on-off valve (7).
このように構成された本発明の空気調和装置において
は、制御装置（11）により、電子膨張弁（５）や開閉弁
（８）が第２図に示すように制御される。即ち、冷媒循
環量が電子膨張弁（５）の容量以下のように小容量のと
きには、開閉弁（１）が閉じられると共に、電子膨張弁
（５）が制御される。In the air conditioner of the present invention thus configured, the control device (11) controls the electronic expansion valve (5) and the on-off valve (8) as shown in FIG. That is, when the refrigerant circulation amount is small such as the capacity of the electronic expansion valve (5) or less, the on-off valve (1) is closed and the electronic expansion valve (5) is controlled.
また、冷媒循環量が電子膨張弁（５）の容量を越える
ときのように大容量のときには、開閉弁（１）が開かれ
ると共に、電子膨張弁（５）が制御される。このよう
に、開閉弁（８）と電子膨張弁（１）とが、制御装置
（11）に制御されて、小容量から大容量まで、冷媒循環
量が連続的に制御される。When the refrigerant circulation amount is large, such as when the amount of refrigerant circulation exceeds the capacity of the electronic expansion valve (5), the on-off valve (1) is opened and the electronic expansion valve (5) is controlled. As described above, the on-off valve (8) and the electronic expansion valve (1) are controlled by the control device (11), and the refrigerant circulation amount is continuously controlled from a small capacity to a large capacity.
更にまた、開閉弁（８）は価格が数百円程度であり、
大容量の電子制御弁〔数千円程度〕を用いる場合に比べ
て非常に安価であり、冷媒循環量を大容量化まで制御す
るために使用し易いものである。Furthermore, the price of the on-off valve (8) is about several hundred yen,
It is very inexpensive as compared with the case of using a large-capacity electronic control valve (about several thousand yen), and is easy to use for controlling the refrigerant circulation amount up to a large capacity.
第３図には、この発明の他の実施例の要部を示し、こ
の実施例で制御される弁と冷媒循環量との関係を第４図
に示す。FIG. 3 shows a main part of another embodiment of the present invention, and FIG. 4 shows a relationship between a valve controlled in this embodiment and a refrigerant circulation amount.
このように、電子膨張弁（５）と並列にこの電子膨張
弁と同一の容量を持つ開閉弁（８）（15）を複数設けて
もよい。この場合には、制御される冷媒循環量が第１図
に示すものより、約1.5倍に大きくなる。Thus, a plurality of on-off valves (8) and (15) having the same capacity as the electronic expansion valve may be provided in parallel with the electronic expansion valve (5). In this case, the controlled refrigerant circulation amount is about 1.5 times larger than that shown in FIG.
（ト）発明の効果 以上説明したように、本発明の空気調和機では、電子
膨張弁にこれと同容量の開閉弁を接続したので、大容量
の冷媒循環量の連続的な制御を安価に実現できる。(G) Effects of the Invention As described above, in the air conditioner of the present invention, the on-off valve having the same capacity as that of the electronic expansion valve is connected to the electronic expansion valve. realizable.
第１図はこの発明による空気調和装置の冷媒回路図、第
２図は制御される弁と冷媒循環量との関係を示す線図、
第３図はこの発明による他の実施例の空気調和装置にお
ける要部説明図、第４図は第３図に示す実施例において
制御される弁と冷媒循環量との関係を示す線図である。 （１）……圧縮機、（４）……室外熱交換器、（５）…
…電子膨張弁、（７）……バイパス管、（８）……開閉
弁、（９）……室内熱交換器、（15）……開閉弁。FIG. 1 is a refrigerant circuit diagram of an air conditioner according to the present invention, FIG. 2 is a diagram showing a relationship between a controlled valve and a refrigerant circulation amount,
FIG. 3 is an explanatory view of a main part of an air conditioner of another embodiment according to the present invention, and FIG. 4 is a diagram showing a relationship between a valve controlled in the embodiment shown in FIG. 3 and a refrigerant circulation amount. . (1) Compressor (4) Outdoor heat exchanger (5)
An electronic expansion valve, (7) a bypass pipe, (8) an on-off valve, (9) an indoor heat exchanger, and (15) an on-off valve.
Claims (1)
御する電子膨張弁、蒸発器を接続して構成した冷凍サイ
クルを有している空気調和装置において、前記電子膨張
弁と同容量の開閉弁を前記電子膨張弁に並列に接続した
ことを特徴とする空気調和機。1. An air conditioner having a refrigeration cycle comprising a compressor, a condenser, an electronic expansion valve for continuously controlling the amount of refrigerant circulated, and an evaporator connected to the electronic expansion valve. An air conditioner wherein an on-off valve having a capacity is connected in parallel to the electronic expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012921A JP2877412B2 (en) | 1990-01-22 | 1990-01-22 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012921A JP2877412B2 (en) | 1990-01-22 | 1990-01-22 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03217771A JPH03217771A (en) | 1991-09-25 |
| JP2877412B2 true JP2877412B2 (en) | 1999-03-31 |
Family
ID=11818800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012921A Expired - Lifetime JP2877412B2 (en) | 1990-01-22 | 1990-01-22 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2877412B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003214729A (en) * | 2002-01-28 | 2003-07-30 | Toshiba Kyaria Kk | Air conditioner |
| DE102004038641A1 (en) | 2004-08-09 | 2006-02-23 | Linde Kältetechnik GmbH & Co. KG | Refrigeration circuit and method for operating a refrigeration cycle |
| JP2010507770A (en) * | 2006-09-18 | 2010-03-11 | キャリア コーポレイション | Refrigeration system with expander bypass |
| JP2010151424A (en) * | 2008-12-26 | 2010-07-08 | Daikin Ind Ltd | Refrigerating device |
| CN102338466A (en) * | 2010-07-23 | 2012-02-01 | 苏州臻源节能科技有限公司 | Pressure rapid balancing device for water heater system of directly-heated type water source heat pump system |
| WO2016194185A1 (en) * | 2015-06-03 | 2016-12-08 | 三菱電機株式会社 | Refrigeration cycle device |
| EP3870910A4 (en) * | 2018-12-21 | 2022-03-23 | Samsung Electronics Co., Ltd. | Air conditioner |
-
1990
- 1990-01-22 JP JP2012921A patent/JP2877412B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03217771A (en) | 1991-09-25 |
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