JPH04139358A - Room cooler/heater - Google Patents
Room cooler/heaterInfo
- Publication number
- JPH04139358A JPH04139358A JP2262701A JP26270190A JPH04139358A JP H04139358 A JPH04139358 A JP H04139358A JP 2262701 A JP2262701 A JP 2262701A JP 26270190 A JP26270190 A JP 26270190A JP H04139358 A JPH04139358 A JP H04139358A
- Authority
- JP
- Japan
- Prior art keywords
- indoor heat
- heat exchangers
- compressor
- refrigerant
- operating
- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は冷暖房装置に関するものである。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) TECHNICAL FIELD The present invention relates to a heating and cooling device.
（従来の技術）
一般に多室型冷暖房装置においては、その冷媒回路中に
コンプレッサ、室外熱交換器、複数の膨張弁、該複数の
膨張弁に夫々対応する複数の室内熱交換器、該複数の室
内熱交換器に夫々対応する複数の制御弁、および、四方
切換弁が配設されている。(Prior Art) Generally, in a multi-room air conditioning system, the refrigerant circuit includes a compressor, an outdoor heat exchanger, a plurality of expansion valves, a plurality of indoor heat exchangers corresponding to the plurality of expansion valves, and a plurality of indoor heat exchangers corresponding to the plurality of expansion valves. A plurality of control valves and a four-way switching valve are provided, each corresponding to an indoor heat exchanger.
複数の室内熱交換器は、複数の部屋を冷暖房するために
各部屋に配置され、その運転状態は各々独立に制御可能
となっている。即ち、冷暖房の要する部屋の室内熱交換
器のみを運転できるようになっている。A plurality of indoor heat exchangers are arranged in each room to cool and heat the plurality of rooms, and their operating states can be independently controlled. That is, only the indoor heat exchangers for rooms that require heating and cooling can be operated.
（発明が解決しようとする課題）
ここで、コンプレッサから吐出される冷媒圧力は、コン
プレッサを駆動するエンジン回転数に依存している。い
ま、室内熱交換器の運転台数の変化が生じる際には、そ
の室内熱交換器に対応する制御弁が開閉され、同時にエ
ンジン回転数を変化させているが、エンジン回転数の変
化は緩やかにしか推移できないので、制御弁を開閉した
際には一時的にコンプレッサ吸入側の冷媒圧力が急上昇
又は急、下降してしまう。この急激な圧力変化はコンプ
レッサに悪影響をおよぼすので、例えば冷媒回路にバイ
パス回路を設け、室内熱交換器の運転台数の変化時には
、このバイパス回路の断続によりコンプレッサ吸入側の
圧力変化を吸収している。(Problems to be Solved by the Invention) Here, the refrigerant pressure discharged from the compressor depends on the engine rotation speed that drives the compressor. Currently, when there is a change in the number of operating indoor heat exchangers, the control valve corresponding to that indoor heat exchanger is opened or closed, and the engine speed changes at the same time, but the change in engine speed is gradual. Therefore, when the control valve is opened or closed, the refrigerant pressure on the suction side of the compressor temporarily drops suddenly or suddenly. This rapid pressure change has a negative effect on the compressor, so for example, a bypass circuit is provided in the refrigerant circuit, and when the number of indoor heat exchangers in operation changes, this bypass circuit is interrupted to absorb pressure changes on the compressor suction side. .
しかしながら、冷媒回路へのバイパス回路の付加は切換
弁等の各種追加機構を必要とし、コスト増大や信顛性の
低下が問題となる。However, adding a bypass circuit to the refrigerant circuit requires various additional mechanisms such as a switching valve, which poses problems of increased cost and decreased reliability.
そこで、本発明では、バイパス回路を付加することなく
、複数の室内熱交換器の作動状態の変化時に発生する冷
媒圧力の急変動を吸収することを、その技術的課題とす
る。Therefore, the technical problem of the present invention is to absorb sudden fluctuations in refrigerant pressure that occur when the operating states of a plurality of indoor heat exchangers change, without adding a bypass circuit.
（課題を解決するための手段）
上述した本発明の技術的課題を解決するために講じた本
発明の技術的手段は、冷媒回路中に挿設されたコンプレ
ッサ、室外熱交換器、複数の電子膨張弁、複数の電子膨
張弁に夫々対応する複数の室内熱交換器、複数の室内熱
交換器に夫々対応する複数の制御弁、及び四方切換弁と
を有する冷暖房装置において、複数の室内熱交換器の作
動台数の変化時には、作動状態の変化する室内熱交換器
に対応する電子膨張弁の開閉速度を緩やかにするように
したことである。(Means for Solving the Problems) The technical means of the present invention taken to solve the above-mentioned technical problems of the present invention are a compressor inserted in a refrigerant circuit, an outdoor heat exchanger, a plurality of electronic In an air conditioning system having an expansion valve, a plurality of indoor heat exchangers respectively corresponding to the plurality of electronic expansion valves, a plurality of control valves respectively corresponding to the plurality of indoor heat exchangers, and a four-way switching valve, the plurality of indoor heat exchangers When the number of operating units changes, the opening/closing speed of electronic expansion valves corresponding to indoor heat exchangers whose operating status changes is slowed down.
（作用）
上述した本発明の技術的手段によれば、電子膨張弁の開
閉速度を緩やかにすることで、冷媒圧力の変化が緩やか
となるため、コンプレッサにＸＳな負荷が加わることが
ない。(Function) According to the technical means of the present invention described above, by slowing down the opening and closing speed of the electronic expansion valve, changes in refrigerant pressure are slowed down, so that no XS load is applied to the compressor.
（実施例）
以下、本発明の技術的手段を具体化した実施例について
添付図面に基づいて説明する。(Example) Hereinafter, an example embodying the technical means of the present invention will be described based on the accompanying drawings.
図面において、冷暖房装置１０の冷媒回路１１中には、
コンプレッサ１２、室外熱交換器１３、複数の電子膨張
弁１４ａ・１４ｂ・１４ｃ・１４ｄ、この複数の電子膨
張弁１４ａ・１４ｂ・１４Ｃ・１４ｄに夫々対応する複
数の室内熱交換器１５ａ１５ｂ−１５ｃ・１５ｄ、この
複数の室内熱交換器１５ａ１５ｂ・１５ｃ・１５ｄに夫
々対応する複数の制御弁１６ａ・１６ｂ・１６ｃ・１６
ｄ、及び四方切換弁１７とが挿設され、付加機構として
リザーバ１８とアキュムレータ１９が同時に挿設されて
いる。In the drawing, in the refrigerant circuit 11 of the air conditioning system 10,
A compressor 12, an outdoor heat exchanger 13, a plurality of electronic expansion valves 14a, 14b, 14c, and 14d, and a plurality of indoor heat exchangers 15a15b-15c and 15d corresponding to the plurality of electronic expansion valves 14a, 14b, 14C, and 14d, respectively. , a plurality of control valves 16a, 16b, 16c, and 16 corresponding to the plurality of indoor heat exchangers 15a, 15b, 15c, and 15d, respectively.
d, and a four-way switching valve 17 are inserted, and a reservoir 18 and an accumulator 19 are inserted simultaneously as additional mechanisms.
また、コンプレッサ１２はエンジン（内燃機関でも外燃
機関でも可）２０により駆動される。Further, the compressor 12 is driven by an engine 20 (which can be either an internal combustion engine or an external combustion engine).
以上の構成を有する冷暖房装置ｌｏの作動について以下
に説明する。The operation of the heating and cooling apparatus lo having the above configuration will be described below.
複数の室内熱交換器１５ａ・１５ｂ・１５ｃ・１５ｄは
、複数の図示しない部屋に配置することができ、夫々運
転状態を可変とすることができる。The plurality of indoor heat exchangers 15a, 15b, 15c, and 15d can be arranged in a plurality of rooms (not shown), and the operating state of each can be made variable.
即ち、冷暖房を必要とする部屋の室内熱交換器のみを運
転できるようになっている。In other words, only the indoor heat exchangers in rooms that require heating and cooling can be operated.
冷媒回路ｌｌ内には一定量の冷媒（例えばフロンガス）
が封入されており、コンプレッサ１２から吐出される冷
媒圧力はエンジン１２の回転数に応じて可変とできる。A certain amount of refrigerant (e.g. chlorofluorocarbon gas) is in the refrigerant circuit ll.
The refrigerant pressure discharged from the compressor 12 can be varied according to the rotation speed of the engine 12.
ここで、例えば、室内熱交換器の運転台数を４台（１５
ａ・１５ｂ１５ｃ１５ｄ）から２台（１５ｃｍ１５ｄ）
へと減らす際には、エンジン２００回転数を落とすが、
その降下速度は急激には落ちない。即ち、コンプレッサ
１２の吸込力を急激に落とすことはできない。しかし、
停止する室内熱交換器１５ａ１５ｂに対応する電子膨張
弁１４ａ・１４ｂを緩やかに閉めていくので、コンプレ
ッサ１２の吸込側に供給される冷媒は急激に減少せず、
吸込側冷媒圧力は徐々に低下していくようになる。そし
て、この後制御弁１６ａ−１６ｂを閉鎖する。Here, for example, the number of operating indoor heat exchangers is 4 (15
a・15b15c15d) to 2 units (15cm15d)
When reducing the engine speed to 200 rpm,
Its rate of descent does not decrease rapidly. That is, the suction force of the compressor 12 cannot be suddenly reduced. but,
Since the electronic expansion valves 14a and 14b corresponding to the indoor heat exchangers 15a and 15b that are to be stopped are gradually closed, the refrigerant supplied to the suction side of the compressor 12 does not decrease rapidly.
The suction side refrigerant pressure gradually decreases. After this, the control valves 16a-16b are closed.
また、例えば、室内熱交換器の運転台数を１台（１５ｂ
）から３台（１５ｂ・１５ｃｍ１５ｄ）へと増やす際に
は、運転する室内熱交換器１５ｃ・１５ｄに対応する制
御弁１６ｃ・１６ｄを開くと同時にエンジン２０の回転
数を上げるが、その上昇速度は急激には上がらない。即
ち、コンプレッサ１２の吸込力を急激に上げることはで
きない。Also, for example, the number of operating indoor heat exchangers may be one (15b).
) to three units (15b, 15cm, 15d), the control valves 16c and 16d corresponding to the indoor heat exchangers 15c and 15d to be operated are opened, and at the same time the rotation speed of the engine 20 is increased, but the speed of increase is It doesn't rise rapidly. That is, the suction force of the compressor 12 cannot be increased rapidly.
しかし、運転する室内熱交換器１５ｃ・１５ｄに対応す
る電子膨張弁１４ｃ・１４ｄを緩やかに開いていくので
、コンプレッサ１２の吸込側に供給される冷媒は急激に
増加せず、吸込側冷媒圧力は徐々に上昇していくように
なる。However, since the electronic expansion valves 14c and 14d corresponding to the operating indoor heat exchangers 15c and 15d are gradually opened, the refrigerant supplied to the suction side of the compressor 12 does not increase rapidly, and the refrigerant pressure on the suction side is It will gradually rise.
本発明によれば、室内熱交換器の運転台数の変化時に、
コンプレッサ前後の急激な冷媒圧力変動がなく、常に安
定した冷暖房装置の運転を可能とする。According to the present invention, when the number of operating indoor heat exchangers changes,
There is no sudden change in refrigerant pressure before and after the compressor, allowing stable operation of the heating and cooling equipment at all times.
図面は、本発明実施例の冷暖房装置１０の構成図を示す
。
１０・・・冷暖房装置、
１１・・・冷媒回路、
１２・・・コンプレッサ、
１３・・・室外熱交換器、
１４ａ、１４ｂ、１４ｃ、１４ｄ ・・−電子膨張弁、
１５ａ、１５ｂ、１５ｃ、１５ｄ・・・室内熱交換器、
１６ａ、１６ｂ、１６ｃ、１６ｄ ・−−制御弁、１７
・・・四方切換弁。The drawings show a configuration diagram of a heating and cooling system 10 according to an embodiment of the present invention. 10... Air conditioning device, 11... Refrigerant circuit, 12... Compressor, 13... Outdoor heat exchanger, 14a, 14b, 14c, 14d... - Electronic expansion valve,
15a, 15b, 15c, 15d...indoor heat exchanger,
16a, 16b, 16c, 16d --control valve, 17
...Four-way switching valve.
Claims (1)
、複数の電子膨張弁、該複数の電子膨張弁に夫々対応す
る複数の室内熱交換器、該複数の室内熱交換器に夫々対
応する複数の制御弁、及び四方切換弁とを有する冷暖房
装置において、 前記複数の室内熱交換器の作動台数の変化時には、作動
状態の変化する室内熱交換器に対応する電子膨張弁の開
閉速度を緩やかにすることを特徴とする冷暖房装置。[Scope of Claims] A compressor inserted in a refrigerant circuit, an outdoor heat exchanger, a plurality of electronic expansion valves, a plurality of indoor heat exchangers corresponding to the plurality of electronic expansion valves, and a plurality of indoor heat exchangers. In an air conditioning system having a plurality of control valves and a four-way switching valve, each of which corresponds to a plurality of indoor heat exchangers, when the number of operating indoor heat exchangers changes, an electronic expansion valve corresponding to the indoor heat exchanger whose operating state changes. A heating and cooling device characterized by slowing down the opening and closing speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2262701A JPH04139358A (en) | 1990-09-28 | 1990-09-28 | Room cooler/heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2262701A JPH04139358A (en) | 1990-09-28 | 1990-09-28 | Room cooler/heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04139358A true JPH04139358A (en) | 1992-05-13 |
Family
ID=17379396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2262701A Pending JPH04139358A (en) | 1990-09-28 | 1990-09-28 | Room cooler/heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04139358A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010113296A1 (en) * | 2009-04-01 | 2010-10-07 | 三菱電機株式会社 | Air-conditioning device |
| US8020394B2 (en) | 2006-02-17 | 2011-09-20 | Lg Electronics Inc. | Air conditioner and control method thereof |
| JP2017062065A (en) * | 2015-09-24 | 2017-03-30 | 株式会社デンソー | Heat exchange system |
| JP2021139512A (en) * | 2020-03-02 | 2021-09-16 | 株式会社富士通ゼネラル | Air conditioner and air conditioning method |
-
1990
- 1990-09-28 JP JP2262701A patent/JPH04139358A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8020394B2 (en) | 2006-02-17 | 2011-09-20 | Lg Electronics Inc. | Air conditioner and control method thereof |
| WO2010113296A1 (en) * | 2009-04-01 | 2010-10-07 | 三菱電機株式会社 | Air-conditioning device |
| JPWO2010113296A1 (en) * | 2009-04-01 | 2012-10-04 | 三菱電機株式会社 | Air conditioner |
| JP5474050B2 (en) * | 2009-04-01 | 2014-04-16 | 三菱電機株式会社 | Air conditioner |
| US9322562B2 (en) | 2009-04-01 | 2016-04-26 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
| JP2017062065A (en) * | 2015-09-24 | 2017-03-30 | 株式会社デンソー | Heat exchange system |
| JP2021139512A (en) * | 2020-03-02 | 2021-09-16 | 株式会社富士通ゼネラル | Air conditioner and air conditioning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4051066B2 (en) | Multistage air conditioner | |
| KR900013259A (en) | Air conditioner | |
| JPH04139358A (en) | Room cooler/heater | |
| KR20050045802A (en) | Multi airconditioner | |
| JP2877412B2 (en) | Air conditioner | |
| JPH04190054A (en) | Multi-chamber type air conditioner | |
| JP4169521B2 (en) | Air conditioner | |
| JP2912696B2 (en) | Air conditioner | |
| JPH03164647A (en) | Air conditioner | |
| JP2720594B2 (en) | Air conditioner | |
| JPH0451319Y2 (en) | ||
| JP2005291555A (en) | Air conditioner | |
| JPS6256429B2 (en) | ||
| JP2719401B2 (en) | Air conditioner | |
| KR900013258A (en) | Air conditioner | |
| JPS6317968Y2 (en) | ||
| JP2503701B2 (en) | Air conditioner | |
| JPH04187973A (en) | Electric refrigerator | |
| JPH04288422A (en) | Duct type air conditioner | |
| KR20050112233A (en) | An air conditioner for multi-step driving | |
| JPS63295879A (en) | Air conditioner | |
| JPH03230059A (en) | Multi-room type air conditioner | |
| JP2755620B2 (en) | Heat pump type air conditioner | |
| JPH04161750A (en) | Air conditioning system | |
| JPH07208823A (en) | Multi-room air conditioner |