JPH10170179A - Air conditioning apparatus - Google Patents
Air conditioning apparatusInfo
- Publication number
- JPH10170179A JPH10170179A JP8324232A JP32423296A JPH10170179A JP H10170179 A JPH10170179 A JP H10170179A JP 8324232 A JP8324232 A JP 8324232A JP 32423296 A JP32423296 A JP 32423296A JP H10170179 A JPH10170179 A JP H10170179A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- outdoor unit
- pump
- indoor
- indoor unit
- 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
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は空調装置に関するも
のであり、特に詳しくは室外機と、全数もしくは過半数
が室外機より下方に設置された複数の室内機との間で、
相変化可能な流体を液体ポンプにより循環させ、各室内
機において冷暖房可能に構成した装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner between an outdoor unit and a plurality of indoor units, all or a majority of which are installed below the outdoor unit.
The present invention relates to an apparatus configured to circulate a phase-changeable fluid by a liquid pump so that each indoor unit can be cooled and heated.
【０００２】[0002]
【従来の技術】この種の装置として、例えば図５に示し
た構成の空調装置が、例えば特開平７−１５１３５９号
公報に開示されている。図中１は冷水または温水が供給
できる室外熱交換器（以下、室外機）、４は室外機１よ
り下層の階に設置された室内機、５は室内機の熱交換
器、８は流量調整弁、１０は電動ポンプ、１１〜１４は
開閉弁であり、これらを液相管６と気相管７とで図のよ
うに配管接続して閉回路３を形成し、閉回路３に封入し
た冷媒が室外機１と室内機４との間で循環して、室内機
４において冷／暖房が行えるようになっている。なお、
２１は室外機１の側面に設置された液レベルセンサであ
り、暖房運転時に室外機１に溜った冷媒液が一定となる
ように電動ポンプ１０を制御する。2. Description of the Related Art As this type of device, for example, an air conditioner having the structure shown in FIG. 5 is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 7-151359. In the figure, 1 is an outdoor heat exchanger capable of supplying cold or hot water (hereinafter referred to as an outdoor unit), 4 is an indoor unit installed on a floor lower than the outdoor unit 1, 5 is a heat exchanger of the indoor unit, and 8 is flow rate adjustment. Valves 10 are electric pumps and 11 to 14 are on-off valves, which are connected by piping with a liquid phase pipe 6 and a gas phase pipe 7 as shown in the figure to form a closed circuit 3 and sealed in the closed circuit 3. The refrigerant circulates between the outdoor unit 1 and the indoor unit 4 so that the indoor unit 4 can perform cooling / heating. In addition,
Reference numeral 21 denotes a liquid level sensor installed on the side surface of the outdoor unit 1, which controls the electric pump 10 so that the refrigerant liquid accumulated in the outdoor unit 1 during heating operation is constant.
【０００３】すなわち、上記構成の空調装置において
は、室内機４が設置されている室内空気の温度が高いと
きに、電動ポンプ１０を停止した状態で、開閉弁１１・
１２を閉じて開閉弁１３・１４を開けると共に、流量調
整弁８も開け、室外機１において発生させる冷熱によっ
て閉回路３に封入した冷媒を冷却して凝縮させると、室
外機１で凝縮した冷媒液は液相管６を自重で流下し、開
閉弁１３・１４および流量調整弁８を介して熱交換器５
に流入する。That is, in the air conditioner having the above structure, when the temperature of the indoor air in which the indoor unit 4 is installed is high, the open / close valve 11 /
When the refrigerant enclosed in the closed circuit 3 is cooled and condensed by the cold generated in the outdoor unit 1, the refrigerant condensed in the outdoor unit 1 is closed. The liquid flows down the liquid phase tube 6 by its own weight, and flows through the heat exchanger 5 through the on-off valves 13 and 14 and the flow control valve 8.
Flows into.
【０００４】そして、熱交換器５に流入した冷媒液は、
熱交換器の管壁を介して室内空気から熱を奪って冷房作
用を行うと共に、冷媒自身は蒸発して気相管７に流入
し、冷媒が凝縮して低圧となっている室外機１に還流す
ると云った自然循環が起こるので、電力消費量が年間を
通じて最大となる夏期に電動ポンプ１０を駆動する電力
が不要であり、ランニングコストが削減できると云った
利点がある。[0004] The refrigerant liquid flowing into the heat exchanger 5 is:
The heat is taken from the indoor air through the pipe wall of the heat exchanger to perform a cooling action, and the refrigerant itself evaporates and flows into the gas phase pipe 7 to condense the refrigerant to the outdoor unit 1 at a low pressure. Since natural circulation such as reflux occurs, there is an advantage that power for driving the electric pump 10 is not required in summer when power consumption is maximum throughout the year, and running costs can be reduced.
【０００５】また、開閉弁１１・１４を閉じて開閉弁１
２・１３を開けると共に、流量調整弁８も開け、電動ポ
ンプ１０を起動して、室外機１において発生させる冷熱
によって閉回路３に封入した冷媒を冷却して凝縮させる
と、室外機１で凝縮した冷媒液は自重と電動ポンプ１０
の吐出力とで液相管６を流下し、流量調整弁８を通って
熱交換器５に入り、冷房作用を行う冷媒の循環が強制的
に行われる。The on-off valves 11 and 14 are closed and the on-off valves 1
2 and 13 are opened, the flow control valve 8 is also opened, and the electric pump 10 is started to cool and condense the refrigerant sealed in the closed circuit 3 by the cold generated in the outdoor unit 1. The refrigerant liquid that has been used is self-weight and the electric pump 10.
With the discharge force, the liquid flows down the liquid phase tube 6, enters the heat exchanger 5 through the flow control valve 8, and forcibly circulates the refrigerant that performs the cooling action.
【０００６】このように、電動ポンプ１０を起動して冷
房を行う場合は、室外機１の直ぐ下に当たる上層階に設
置した熱交換器５にも十分な量の冷媒液が供給できると
云った利点がある。As described above, when the electric pump 10 is started to perform cooling, a sufficient amount of the refrigerant liquid can be supplied to the heat exchanger 5 installed on the upper floor immediately below the outdoor unit 1. There are advantages.
【０００７】一方、室内機４が設置されている室内空気
の温度が低いときに、開閉弁１２・１３を閉じて開閉弁
１１・１４を開けると共に、流量調整弁８も開け、電動
ポンプ１０を起動した状態で、室外機１において発生さ
せる温熱によって閉回路３に封入した冷媒を加熱して蒸
発させると、室外機１で蒸発した冷媒蒸気は気相管７を
介して熱交換器５に流入する。On the other hand, when the temperature of the indoor air in which the indoor unit 4 is installed is low, the on / off valves 12 and 13 are closed and the on / off valves 11 and 14 are opened, and the flow control valve 8 is also opened, so that the electric pump 10 is opened. When the refrigerant sealed in the closed circuit 3 is heated and evaporated by the heat generated in the outdoor unit 1 in the activated state, the refrigerant vapor evaporated in the outdoor unit 1 flows into the heat exchanger 5 through the gas phase pipe 7. I do.
【０００８】そして、熱交換器５に流入した冷媒蒸気
は、熱交換器の管壁を介して室内空気に放熱して暖房作
用を行うと共に、冷媒自身は凝縮して液相管６に流入
し、開閉弁１４・１１を介して電動ポンプ１０により室
外機１に還流すると云った循環が起こり、室内機４にお
ける暖房運転が継続されるようになっている。[0008] The refrigerant vapor flowing into the heat exchanger 5 radiates heat to room air through the pipe wall of the heat exchanger to perform a heating action, and the refrigerant itself condenses and flows into the liquid phase pipe 6. In addition, circulation such as reflux to the outdoor unit 1 by the electric pump 10 via the on-off valves 14 and 11 occurs, and the heating operation in the indoor unit 4 is continued.
【０００９】[0009]
【発明が解決しようとする課題】しかし、特開平７−１
５１３５９号公報に開示された上記構成の空調装置にお
いては、電動ポンプを停止して冷媒を自然循環させて冷
房を行う場合には、電力消費がピークとなる夏期の電力
消費が削減でき、ランニングコストの抑制が実現できる
が、室外機との上下差が小さい上層階の室内機には十分
な量の冷媒が供給され難いため、この部分では冷房作用
が不足すると云った問題点がある。SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open No. 7-1
In the air conditioner having the above-described configuration disclosed in Japanese Patent No. 51359, when the electric pump is stopped to perform cooling by naturally circulating the refrigerant, power consumption in summer when power consumption peaks can be reduced, and running costs can be reduced. However, since it is difficult to supply a sufficient amount of refrigerant to the indoor units on the upper floor where the vertical difference from the outdoor units is small, there is a problem that the cooling operation is insufficient in this part.
【００１０】一方、電動ポンプを起動すれば、上層階に
設置の室内機にも十分な量の冷媒が供給でき、必要な冷
房作用が確保できるが、ポンプを駆動するための電力が
必要となる。しかも、この場合の電動ポンプは暖房運転
時に室内機で凝縮した冷媒液を上方に設置した室外機ま
で搬送することができる能力を備えた大型のポンプであ
るため、電力消費が一層嵩むと云った問題点がある。[0010] On the other hand, when the electric pump is started, a sufficient amount of refrigerant can be supplied to the indoor unit installed on the upper floor, and the necessary cooling action can be ensured. However, electric power for driving the pump is required. . Moreover, since the electric pump in this case is a large-sized pump capable of transporting the refrigerant liquid condensed in the indoor unit to the outdoor unit installed above during the heating operation, power consumption is further increased. There is a problem.
【００１１】したがって、十分な冷暖房作用が発揮で
き、しかも発電量が年間を通じて最大となる盛夏時の電
力消費が抑制できる空調装置にする必要があった。Therefore, there is a need for an air conditioner capable of exerting a sufficient cooling / heating effect and suppressing power consumption during the high summer months when the amount of power generation is maximized throughout the year.
【００１２】[0012]
【課題を解決するための手段】本発明は上記従来技術の
課題を解決するため、室外機と、全数もしくは過半数が
室外機より下方に設置された複数の室内機との間を、気
相管とポンプを備えた液相管とで連結し、室外機で吸熱
して蒸発した気体を室内機に導入して放熱・凝縮させ、
この凝縮した液体を前記ポンプの吐出力によって室外機
に戻し、各室内機において暖房可能に構成すると共に、
液相管の流路切り替えにより、室外機で放熱して凝縮し
た液体を、蒸気との比重差と、前記ポンプの吐出力とを
利用して室内機に搬送し、室内機で吸熱・蒸発させて各
室内機において冷房可能に構成した装置において、前記
ポンプの回転をポンプの極数変換またはポンプに供給す
る電力の周波数を変換して制御する制御手段を備えるよ
うにした空調装置を提供するものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides a gas phase tube between an outdoor unit and a plurality of indoor units, all or a majority of which are installed below the outdoor unit. And a liquid-phase pipe equipped with a pump, which absorbs heat from the outdoor unit and introduces the evaporated gas into the indoor unit to release and condense it.
The condensed liquid is returned to the outdoor unit by the discharge force of the pump, and each indoor unit is configured to be heatable,
By switching the flow path of the liquid phase pipe, the liquid radiated and condensed by the outdoor unit is conveyed to the indoor unit using the specific gravity difference from the vapor and the discharge force of the pump, and is absorbed and evaporated by the indoor unit. Providing an air conditioner comprising a control means for controlling the rotation of the pump by converting the number of poles of the pump or the frequency of electric power supplied to the pump in a device configured to be capable of cooling in each indoor unit. It is.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施形態につい
て、図１〜図４を参照して説明する。なお、理解を容易
にするため、これらの図においても前記図５において説
明した部分と同様の機能を有する部分には、同一の符号
を付した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In addition, in order to facilitate understanding, in these figures, parts having the same functions as the parts described in FIG. 5 are denoted by the same reference numerals.
【００１４】図中１は所望時に冷熱または温熱を発生さ
せることができる、例えば吸収式冷凍機などからなる室
外機であり、建物の例えば屋上にある機械室などに設置
され、例えば蒸発器の内部に配管した熱交換器２を介し
て、閉回路３に封入した相変化が可能な流体、例えば低
温度でも圧力が低下すると容易に蒸発し得る、Ｒ−１３
４ａと熱の授受を行って、相変化を起こさせる。In the figure, reference numeral 1 denotes an outdoor unit which can generate cold or warm heat when desired, such as an absorption refrigerator, which is installed in a machine room, for example, on a rooftop of a building, for example, inside an evaporator. R-13, which can be easily vaporized when the pressure is reduced even at a low temperature, such as a fluid capable of phase change, sealed in the closed circuit 3 through the heat exchanger 2 piped to R-13.
Transfer of heat with 4a causes a phase change.
【００１５】室外機１の熱交換器２と、建物の各部屋に
設置した室内機４の熱交換器５とは、図１のように液相
管６・気相管７・流量調整弁８・レシーバタンク９・電
動ポンプ１０・開閉弁１１〜１４を介して配管・接続さ
れ、閉回路３を形成している。As shown in FIG. 1, the heat exchanger 2 of the outdoor unit 1 and the heat exchanger 5 of the indoor unit 4 installed in each room of the building are composed of a liquid phase pipe 6, a gas phase pipe 7, and a flow control valve 8, as shown in FIG. The receiver tank 9, the electric pump 10, and the piping and connection via the on-off valves 11 to 14 form a closed circuit 3.
【００１６】なお、１５は、電動ポンプ１０を駆動する
ために供給する電力の周波数を変換する周波数変換器、
１６は室内空気を熱交換器５に吹き付けて室内に還流さ
せるための送風機、Ｓ１とＳ２はＲ−１３４ａの温度を
検出するために熱交換器５のＲ−１３４ａの出入口に設
けた温度センサで、空調負荷が大きいほど入口側の温度
センサＳ１と出口側の温度センサＳ２との温度差が大き
くなり、空調負荷が小さいほど前記温度差は小さくな
る。A frequency converter 15 converts the frequency of electric power supplied to drive the electric pump 10;
Reference numeral 16 denotes a blower for blowing indoor air to the heat exchanger 5 to recirculate the indoor air, and S1 and S2 denote temperature sensors provided at the entrance and exit of the R-134a of the heat exchanger 5 to detect the temperature of the R-134a. The temperature difference between the inlet-side temperature sensor S1 and the outlet-side temperature sensor S2 increases as the air-conditioning load increases, and decreases as the air-conditioning load decreases.
【００１７】また、Ｓ３はレシーバタンク９に溜ったＲ
−１３４ａの液面レベルを検出するための液面センサ、
Ｓ４はＲ−１３４ａを凝縮させるために室外機１に投入
する熱量のレベルを検出する熱量センサである。S3 is the value of R accumulated in the receiver tank 9.
A liquid level sensor for detecting the liquid level of -134a,
S4 is a calorie sensor for detecting the level of the calorie input to the outdoor unit 1 to condense R-134a.
【００１８】さらに、この室外機１には室外制御装置１
７を、室内機４には室内制御装置１８を設けてある。そ
して、室内制御装置１８には、流量調整弁８の弁開度お
よび温度センサＳ１・Ｓ２が検出した温度情報を通信信
号に変換可能であると共に、外部から受信した通信信号
を所要の制御信号に変換することのできる信号変換器
（図示せず）を内蔵して、室外制御装置１７と室内制御
装置１８とを通信線１９によって接続し、室外制御装置
１７が出力する制御信号を室内制御装置１８が受けて流
量調整弁８の開度が制御されるように構成してある。Further, the outdoor unit 1 has an outdoor control device 1
The indoor unit 4 is provided with an indoor control device 18. The indoor control device 18 can convert the valve opening of the flow control valve 8 and the temperature information detected by the temperature sensors S1 and S2 into a communication signal, and convert the communication signal received from the outside into a required control signal. A signal converter (not shown) capable of conversion is built in, the outdoor control device 17 and the indoor control device 18 are connected by a communication line 19, and the control signal output from the outdoor control device 17 is transmitted to the indoor control device 18 And the opening degree of the flow control valve 8 is controlled.
【００１９】また、室内制御装置１８と通信可能で、冷
暖房の起動／停止、送風の強弱選択、温度設定などが行
えるリモコン２０を各室内機４に対応して設置してあ
り、室外制御装置１７は液面センサＳ３・熱量センサＳ
４・周波数変換器１５とも図示しない信号線を介して接
続され、それぞれの機器との間で信号の授受ができるよ
うになっている。A remote controller 20 communicable with the indoor controller 18 and capable of starting / stopping cooling / heating, selecting the intensity of air blowing, setting a temperature, and the like is provided for each indoor unit 4. Is the liquid level sensor S3 and the calorific value sensor S
4. The frequency converter 15 is also connected via a signal line (not shown) so that signals can be exchanged with each device.
【００２０】上記構成になる本発明の空調装置において
は、例えば室内温度が高いときに、室外機１において冷
熱を発生させながら、開閉弁１１・１４を閉じ、開閉弁
１２・１３を開いた状態で電動ポンプ１０を運転する
と、室外機１の冷熱によって閉回路３のＲ−１３４ａは
熱交換器２の管壁を介して冷却されるので、Ｒ−１３４
ａは凝縮して下流側の液相管６に流出し、液相管６に溜
っているＲ−１３４ａの重みに助成された電動ポンプ１
０の吐出力によって、室内機４の熱交換器５それぞれに
十分な量のＲ−１３４ａが供給できる。In the air conditioner of the present invention having the above-described configuration, for example, when the indoor temperature is high, the on-off valves 11 and 14 are closed and the on-off valves 12 and 13 are opened while generating cold heat in the outdoor unit 1. When the electric pump 10 is operated at R, the R-134a of the closed circuit 3 is cooled via the tube wall of the heat exchanger 2 by the cold heat of the outdoor unit 1, so that the R-134
a is condensed and flows out to the liquid phase pipe 6 on the downstream side, and the electric pump 1 assisted by the weight of R-134a stored in the liquid phase pipe 6
With a discharge force of 0, a sufficient amount of R-134a can be supplied to each of the heat exchangers 5 of the indoor unit 4.
【００２１】そして、各熱交換器５においては、送風機
１６によって温度の高い室内空気が強制的に供給されて
いるので、Ｒ−１３４ａは室内空気から熱を奪って蒸発
し、冷房作用を行ない、その後、Ｒ−１３４ａが冷却さ
れて凝縮・液化し、低圧になっている室外機１の熱交換
器２に気相管７を通って戻る。In each of the heat exchangers 5, since the high-temperature indoor air is forcibly supplied by the blower 16, the R-134a removes heat from the indoor air and evaporates to perform a cooling operation. Thereafter, the R-134a is cooled and condensed and liquefied, and returns to the low-pressure heat exchanger 2 of the outdoor unit 1 through the gas-phase tube 7.
【００２２】上記冷房運転において、本発明の空調装置
においては電動ポンプ１０の回転数を、例えば液面セン
サＳ３が出力するレシーバタンク９の中のＲ−１３４ａ
の液面レベルに基づいて室外制御装置１７が制御する。In the cooling operation, in the air conditioner of the present invention, the number of revolutions of the electric pump 10 is set to, for example, R-134a in the receiver tank 9 output from the liquid level sensor S3.
Is controlled by the outdoor controller 17 on the basis of the liquid level.
【００２３】すなわち、液面センサＳ３が検出して出力
するＲ−１３４ａの液面レベルＨ（上下２位置間を０〜
１００等分して百分率表示）に基づいて、室外制御装置
１７は電動ポンプ１０に供給する電力の周波数Ｎを、周
波数変換器１５において、例えば図２に示すように周波
数変換して、電動ポンプ１０の回転数を制御する。That is, the liquid level H of the R-134a detected and output by the liquid level sensor S3 (0 between the upper and lower positions is 0 to 0).
The outdoor control device 17 converts the frequency N of the electric power supplied to the electric pump 10 into a frequency converter 15 based on the frequency of the electric pump 10 as shown in FIG. To control the number of revolutions.
【００２４】したがって、本発明の空調装置において
は、Ｒ−１３４ａの液体と気体の比重差に、電動ポンプ
１０による搬送力が加算されてＲ−１３４ａの液体が搬
送されるので、室内機４の一部を室外機１と同じフロア
もしくは室外機１より高い位置に設置しても、冷房運転
のためのＲ−１３４ａの循環が確実に行われ、しかも電
動ポンプ１０の回転数を周波数制御しているので、電力
消費量が抑制できる。Therefore, in the air conditioner of the present invention, the transport force of the electric pump 10 is added to the specific gravity difference between the liquid and the gas of the R-134a to transport the liquid of the R-134a. Even if a part is installed on the same floor as the outdoor unit 1 or on a position higher than the outdoor unit 1, the circulation of the R-134a for the cooling operation is reliably performed, and the frequency of the rotation speed of the electric pump 10 is controlled. Power consumption can be reduced.
【００２５】また、電動ポンプ１０の回転数は、液面セ
ンサＳ３が検出して出力するＲ−１３４ａの液面レベル
Ｈが所定より低い場合には、電動ポンプ１０の全ての電
極を機能させることで低下させ、液面レベルＨが所定よ
り高い場合には、電動ポンプ１０の電極の一部を機能さ
せないように配線を切り替えて増加させる、極数変換制
御によって回転数制御を行うようにすることもできる。If the liquid level H of the R-134a detected and output by the liquid level sensor S3 is lower than a predetermined value, all the electrodes of the electric pump 10 are allowed to function. When the liquid level H is higher than a predetermined value, the wiring is switched to increase so that some of the electrodes of the electric pump 10 do not function, and the rotation speed is controlled by the pole number conversion control. Can also.
【００２６】さらに、電動ポンプ１０の回転数は、温度
センサＳ１・Ｓ２が出力する温度情報に基づいて求めた
空調負荷、あるいは熱量センサＳ４が出力する室外機１
における投入熱量の情報に基づいて制御しても良い。Further, the rotation speed of the electric pump 10 is determined by the air-conditioning load determined based on the temperature information output from the temperature sensors S1 and S2, or the outdoor unit
May be controlled based on the information on the amount of heat input.
【００２７】すなわち、全室内機４の温度センサＳ１・
Ｓ２が検出して出力するＲ−１３４ａの温度情報から演
算算出した全空調負荷Ｗ（百分率表示）に基づいて、室
外制御装置１７が電動ポンプ１０に供給する電力の周波
数Ｎを、周波数変換器１５において、例えば図３に示す
ように周波数変換して、電動ポンプ１０の回転数を制御
したり、前記液面レベルＨの場合と同様に、電動ポンプ
１０の極数変換を行って回転数制御することも可能であ
る。That is, the temperature sensors S 1 ·
Based on the total air-conditioning load W (expressed as a percentage) calculated from the temperature information of R-134a detected and output by S2, the outdoor controller 17 converts the frequency N of the electric power supplied to the electric pump 10 to a frequency converter 15 In FIG. 3, for example, the frequency is converted as shown in FIG. 3 to control the number of rotations of the electric pump 10, or similarly to the case of the liquid level H, the number of poles of the electric pump 10 is converted to control the number of rotations. It is also possible.
【００２８】あるいは、熱量センサＳ４が検出して出力
する室外機１における投入熱量Ｑ（燃料弁の開度などを
百分率表示）に基づいて、室外制御装置１７が電動ポン
プ１０に供給する電力の周波数Ｎを、周波数変換器１５
において、例えば図４に示すように周波数変換して制御
したり、前記液面レベルＨの場合と同様に、電動ポンプ
１０の極数変換を行って回転数制御することもできる。Alternatively, the frequency of the electric power supplied to the electric pump 10 by the outdoor control device 17 based on the input heat amount Q (the opening degree of the fuel valve and the like is displayed as a percentage) in the outdoor unit 1 detected and output by the heat amount sensor S4. N to the frequency converter 15
For example, as shown in FIG. 4, control may be performed by converting the frequency, or similarly to the case of the liquid level H, the number of poles of the electric pump 10 may be converted to control the rotation speed.
【００２９】電動ポンプ１０の回転数を、上記何れの方
法によって制御しても、冷房運転のためのＲ−１３４ａ
の循環が確実に行え、しかも電力消費量の抑制ができ
る。Regardless of whether the number of revolutions of the electric pump 10 is controlled by any of the above methods, the R-134a for cooling operation is controlled.
Circulation can be reliably performed, and the power consumption can be suppressed.
【００３０】なお、温度センサＳ１・Ｓ２は、熱交換器
５に吹き付ける室内空気の温度変化が検出できるように
設置したり、温度センサＳ１・Ｓ２に代えて、熱交換器
５の出入口部におけるＲ−１３４ａの圧力差が検出でき
る圧力センサを設置して、室外制御装置１７に空調負荷
として出力するように構成することもできる。The temperature sensors S1 and S2 are installed so as to detect a change in the temperature of the indoor air blown to the heat exchanger 5, and the temperature sensors S1 and S2 are replaced with the R at the entrance and exit of the heat exchanger 5 instead of the temperature sensors S1 and S2. A pressure sensor capable of detecting a pressure difference of −134a may be provided and output to the outdoor control device 17 as an air conditioning load.
【００３１】そして、その空調負荷に係わる情報、例え
ば流量調整弁８の開度の総和などに基づいて、電動ポン
プ１０の回転数を制御するようにしても良い。Then, the rotation speed of the electric pump 10 may be controlled based on information on the air-conditioning load, for example, a total sum of the opening degrees of the flow control valve 8.
【００３２】この場合、上層階に設置した室内機４の熱
交換器５と、下層階に設置した室内機４の熱交換器５と
では、流量調整弁８の開度が同じであっても、下層階に
設置した室内機４の熱交換器５には多くのＲ−１３４ａ
が流入し、上層階に設置した室内機４の熱交換器５には
Ｒ−１３４ａが流入し難いので、室内機４が設置されて
いる階を考慮した弁開度の補正総和を求めて、例えば電
動ポンプ１０に供給する電力の周波数Ｎを決定するのが
好ましい。In this case, the heat exchanger 5 of the indoor unit 4 installed on the upper floor and the heat exchanger 5 of the indoor unit 4 installed on the lower floor have the same opening degree of the flow control valve 8. The heat exchanger 5 of the indoor unit 4 installed on the lower floor has many R-134a.
Flows, and it is difficult for R-134a to flow into the heat exchanger 5 of the indoor unit 4 installed on the upper floor, so that the correction sum of the valve opening in consideration of the floor on which the indoor unit 4 is installed is obtained, For example, it is preferable to determine the frequency N of the electric power supplied to the electric pump 10.
【００３３】すなわち、温度センサ１０・１１が検出し
た温度情報が同じであっても、流量調整弁８に同じ制御
信号を出力してその開度制御を行ったのでは、設置階が
違えば冷房負荷に応じた適量のＲ−１３４ａが供給でき
ないので、室内機４が設置されている階によって異なっ
た制御信号、すなわち上の階に設置されている室内機４
ほど流量調整弁８の開度を大きく開ける所定の制御プロ
グラム、例えば室内機４を１０の階に分けて設置した空
調装置の場合には、例えば一番低い階に設置した室内機
４の補正係数を１とし、１階上がる毎に１に０．１を加
えた数値をその階の補正係数とし、温度センサ１０・１
１が検出した温度情報に基づいて先ず無補正時の流量調
整弁８の開度を求め、さらにこの開度に所要の補正係数
を乗算して室内機４に実際に出力する流量調整弁８の開
度を求め、このようにして求めた開度に室内機４の流量
調整弁８の開度を調整するための制御信号を室内制御装
置１８に出力する制御プログラムを室外制御装置１７に
記憶しておき、この制御プログラムに基づいて室内機４
それぞれの流量調整弁８の開度を制御する。That is, even if the temperature information detected by the temperature sensors 10 and 11 is the same, if the same control signal is output to the flow regulating valve 8 and the opening degree is controlled, if the installation floor is different, cooling is performed. Since an appropriate amount of R-134a cannot be supplied according to the load, the control signal differs depending on the floor where the indoor unit 4 is installed, that is, the indoor unit 4 installed on the upper floor.
For example, in the case of an air conditioner in which the indoor unit 4 is divided into ten floors and installed, the correction coefficient of the indoor unit 4 installed in the lowest floor is increased. Is set to 1 and a value obtained by adding 0.1 to 1 each time the floor rises is used as a correction coefficient for that floor.
First, the opening of the flow control valve 8 at the time of non-correction is obtained based on the temperature information detected by 1, and the opening is multiplied by a required correction coefficient, and the opening of the flow control valve 8 which is actually output to the indoor unit 4 is obtained. The control program for obtaining the opening degree and outputting a control signal for adjusting the opening degree of the flow control valve 8 of the indoor unit 4 to the opening degree thus obtained to the indoor control device 18 is stored in the outdoor control device 17. In advance, based on this control program, the indoor unit 4
The opening of each flow control valve 8 is controlled.
【００３４】そして、室外制御装置１７には同時に、例
えば一番低い階に設置した室内機４の補正係数を１と
し、１階上がる毎に１に０．１を加えた数値をその階の
補正係数とし、実際に検知した流量調整弁８の開度を所
要の補正係数で除算してその補正開度を求め、このよう
にして求めた全補正開度を基づいて、電動ポンプ１０に
供給する電力の周波数Ｎを決定する制御プログラムを室
外制御装置１７に記憶しておき、この制御プログラムに
基づいて電動ポンプ１０の回転数を制御する。At the same time, the outdoor control unit 17 sets the correction coefficient of the indoor unit 4 installed at the lowest floor to 1, for example, and adds a value obtained by adding 0.1 to 1 every time the floor is raised. The correction opening is obtained by dividing the actually detected opening of the flow control valve 8 by a required correction coefficient, and is supplied to the electric pump 10 based on the total correction opening thus obtained. A control program for determining the power frequency N is stored in the outdoor control device 17, and the rotation speed of the electric pump 10 is controlled based on the control program.
【００３５】なお、上層階を除く室内機４においてのみ
冷房運転を行う場合には、電動ポンプ１０を起動しなく
ても、開閉弁１１・１２を閉じ、開閉弁１３・１４を開
けるだけで、液相管６に溜っているＲ−１３４ａの液の
重みで室内機４の熱交換器５に十分な量のＲ−１３４ａ
が供給できるので、電動ポンプ１０を停止した一層経済
的な冷房運転が行える。When the cooling operation is performed only in the indoor unit 4 excluding the upper floor, the on-off valves 11 and 12 are closed and the on-off valves 13 and 14 are opened without starting the electric pump 10. A sufficient amount of R-134a is supplied to the heat exchanger 5 of the indoor unit 4 by the weight of the R-134a liquid stored in the liquid phase pipe 6.
Can be supplied, so that more economical cooling operation with the electric pump 10 stopped can be performed.
【００３６】また、室内空気が低いときに、開閉弁１２
・１３を閉じ、開閉弁１１・１４を開いた状態で室外機
１で温熱を発生させ、この熱と熱交換器２で熱交換して
蒸発し、気相管７を介して供給された各室内機４の熱交
換器５で送風機１６から供給される温度の低い室内空気
に放熱して暖房作用を行い、凝縮・液化した閉回路３の
Ｒ−１３４ａを室外機１に戻す暖房運転時の電動ポンプ
１０の回転数も、上記冷房運転のときと同様に周波数変
換制御したり、極数変換して制御する。When the room air is low, the on-off valve 12
With the closed unit 13 and the on-off valves 11 and 14 opened, heat is generated in the outdoor unit 1, and heat is exchanged with the heat in the heat exchanger 2 to evaporate, and the heat is supplied through the gas phase pipe 7. At the time of the heating operation, the heat exchanger 5 of the indoor unit 4 radiates heat to the low-temperature indoor air supplied from the blower 16 to perform a heating action and returns the condensed and liquefied R-134a of the closed circuit 3 to the outdoor unit 1. The rotation speed of the electric pump 10 is controlled by frequency conversion control or pole number conversion similarly to the cooling operation.
【００３７】なお、温度センサＳ１・Ｓ２が検出する温
度情報から算出した全空調負荷Ｗ、液面レベルセンサＳ
３が検出するＲ−１３４ａの液面レベルＨ、熱量センサ
Ｓ４が検出する室外機１における投入熱量Ｑに基づく電
動ポンプ１０の周波数変換制御、極数変換制御は冷房運
転のときと全く同様に行うことができるが、流量調整弁
８の開度に基づく場合は、補正方向が逆となるので注意
が必要である。The total air conditioning load W and the liquid level sensor S calculated from the temperature information detected by the temperature sensors S1 and S2.
3, the frequency conversion control and the number of poles conversion control of the electric pump 10 based on the input heat quantity Q in the outdoor unit 1 detected by the heat quantity sensor S4 detected by the liquid level H of the R-134a are performed in exactly the same manner as in the cooling operation. However, when the flow rate adjustment valve 8 is based on the opening degree, the correction direction is reversed, so care must be taken.
【００３８】すなわち、熱交換器５で凝縮したＲ−１３
４ａの液体は、下層階に設置されている熱交換器５ほど
レシーバタンク９との上下差が小さいため、レシーバタ
ンク９の側に排出され難い。また、下層階に設置されて
いる熱交換器５ほど、室外機１の熱交換器２で蒸発した
Ｒ−１３４ａは圧力低下した状態で作用するので、下層
階に設置されている熱交換器５ほど凝縮したＲ−１３４
ａの液体は排出され難い。このため、暖房負荷が同じで
あれば、下層階に設置されている熱交換器５ほど、流量
調整弁８の開度を大きく開いて暖房運転を行う必要があ
る。That is, R-13 condensed in the heat exchanger 5
The liquid 4a is less likely to be discharged to the receiver tank 9 side because the vertical difference between the liquid and the receiver tank 9 is smaller in the heat exchanger 5 installed on the lower floor. In addition, since the R-134a evaporated in the heat exchanger 2 of the outdoor unit 1 acts in a reduced pressure state, the heat exchanger 5 installed on the lower floor operates on the lower floor. R-134
The liquid a is difficult to be discharged. Therefore, if the heating load is the same, the heat exchanger 5 installed on the lower floor needs to perform the heating operation by opening the opening of the flow control valve 8 more widely.
【００３９】したがって、温度センサＳ１・Ｓ２が検出
した温度情報が同じであっても、室外制御装置１７には
室内機４が設置されている階によって異なった制御信
号、すなわち下の階に設置されている室内機４ほど流量
調整弁８の開度を大きく開ける所定の制御プログラム、
例えば室内機４を１０の階に分けて設置した空調装置の
場合には、例えば一番高い階に設置した室内機４の補正
係数を１とし、１階下がる毎に１に０．０５を加えた数
値をその階の補正係数とし、温度センサＳ１・Ｓ２が検
出した温度情報に基づいて先ず無補正時の流量調整弁８
の開度を求め、さらにこの開度に所要の補正係数を乗算
して室内機４に実際に出力する流量調整弁８の開度を求
め、このようにして求めた開度に室内機４の流量調整弁
８の開度を調整するための制御信号を室内制御装置１８
に出力する制御プログラムを記憶しておき、この制御プ
ログラムに基づいて室内機４それぞれの流量調整弁８の
開度は室外制御装置１７によって制御される。Therefore, even if the temperature information detected by the temperature sensors S1 and S2 is the same, the outdoor controller 17 is provided with different control signals depending on the floor on which the indoor unit 4 is installed, that is, installed on the lower floor. A predetermined control program for opening the opening of the flow control valve 8 to a greater extent as the indoor unit 4 is
For example, in the case of an air conditioner in which the indoor units 4 are installed on 10 floors, for example, the correction coefficient of the indoor unit 4 installed on the highest floor is set to 1, and 0.05 is added to 1 every time the floor goes down. The corrected value is used as a correction coefficient for the floor, and based on the temperature information detected by the temperature sensors S1 and S2, first, the flow control valve 8 at the time of no correction
Of the flow control valve 8 that is actually output to the indoor unit 4 by multiplying the opening by a required correction coefficient. A control signal for adjusting the opening of the flow control valve 8 is transmitted to the indoor control device 18.
Is stored, and the opening degree of the flow control valve 8 of each indoor unit 4 is controlled by the outdoor control device 17 based on the control program.
【００４０】このため、この場合は例えば一番高い階に
設置した室内機４の補正係数を１とし、１階下がる毎に
１に０．０５を加えた数値をその階の補正係数とし、実
際に検知した流量調整弁８の開度を所要の補正係数で除
算してその補正開度を求め、このようにして求めた全補
正開度を基づいて、電動ポンプ１０に供給する電力の周
波数Ｎを決定し、電動ポンプ１０の回転数を制御するよ
うにする。For this reason, in this case, for example, the correction coefficient of the indoor unit 4 installed on the highest floor is 1, and a value obtained by adding 0.05 to 1 every time the floor goes down is set as the correction coefficient of that floor. The corrected opening degree is obtained by dividing the detected opening degree of the flow control valve 8 by a required correction coefficient, and the frequency N of the electric power supplied to the electric pump 10 is determined based on the total corrected opening degree thus obtained. Is determined, and the rotation speed of the electric pump 10 is controlled.
【００４１】なお、蒸発器に配管した熱交換器２から冷
熱を供給したり、温熱を供給することができる吸収式冷
凍機としては、例えば特開平７−３１８１８９号公報な
どに開示されたものが使用できる。As an absorption refrigerator capable of supplying cold heat or warm heat from the heat exchanger 2 connected to the evaporator, for example, the one disclosed in Japanese Patent Application Laid-Open No. 7-318189 is disclosed. Can be used.
【００４２】また、閉回路３に封入する相変化可能な流
体としては、Ｒ−１３４ａの他にも、Ｒ−４０７ｃ、Ｒ
−４０４Ａ、Ｒ−４１０ｃなど、潜熱による熱移動が可
能なものであっても良い。The phase-changeable fluid sealed in the closed circuit 3 includes R-407a, R-407c and R-134a in addition to R-134a.
-404A, R-410c, etc., which can transfer heat by latent heat may be used.
【００４３】[0043]
【発明の効果】以上説明したように、本発明の空調装置
によれば、室内機の設置階に関係無く十分な冷暖房能力
が確保でき、しかも発電量が年間を通じて最大となる盛
夏時の電力消費が効果的に削減できる。As described above, according to the air conditioner of the present invention, sufficient cooling and heating capacity can be ensured irrespective of the floor where the indoor units are installed, and the power consumption during the high summer months, when the amount of power generation becomes maximum throughout the year. Can be effectively reduced.
【図１】一実施形態の説明図である。FIG. 1 is an explanatory diagram of one embodiment.
【図２】電動ポンプに供給する電力の周波数を、液面レ
ベルに基づいて変換する際の説明図である。FIG. 2 is an explanatory diagram when a frequency of electric power supplied to an electric pump is converted based on a liquid level.
【図３】電動ポンプに供給する電力の周波数を、空調負
荷に基づいて変換する際の説明図である。FIG. 3 is an explanatory diagram when a frequency of electric power supplied to an electric pump is converted based on an air conditioning load.
【図４】電動ポンプに供給する電力の周波数を、投入熱
量に基づいて変換する際の説明図である。FIG. 4 is an explanatory diagram when a frequency of electric power supplied to the electric pump is converted based on the amount of input heat.
【図５】従来技術の説明図である。FIG. 5 is an explanatory diagram of a conventional technique.
１ 室外機 ２ 熱交換器 ３ 閉回路 ４ 室内機 ５ 熱交換器 ６ 液相管 ６Ａ 液相管共通部 ６Ｂ バイパス管 ６Ｃ バイパス管 ７ 気相管 ８ 流量調整弁 ９ レシーバタンク １０ 電動ポンプ １１ 冷暖切替弁 １２ レシーバタンク １３ 電動ポンプ １４ 冷暖切替弁 １５ 周波数変換器 １６ 送風機 １７ 室外制御装置 １８ 室内制御装置 １９ 通信線 ２０ リモコン Ｓ１・Ｓ２ 温度センサ Ｓ３ 液面センサ Ｓ４ 熱量センサ DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Heat exchanger 3 Closed circuit 4 Indoor unit 5 Heat exchanger 6 Liquid phase pipe 6A Liquid phase pipe common part 6B Bypass pipe 6C Bypass pipe 7 Gas phase pipe 8 Flow control valve 9 Receiver tank 10 Electric pump 11 Cooling / heating switching Valve 12 Receiver tank 13 Electric pump 14 Cooling / heating switching valve 15 Frequency converter 16 Blower 17 Outdoor control device 18 Indoor control device 19 Communication line 20 Remote control S1 ・ S2 Temperature sensor S3 Liquid level sensor S4 Heat quantity sensor
Claims (1)
より下方に設置された複数の室内機との間を、気相管と
ポンプを備えた液相管とで連結し、室外機で吸熱して蒸
発した気体を室内機に導入して放熱・凝縮させ、この凝
縮した液体を前記ポンプの吐出力によって室外機に戻
し、各室内機において暖房可能に構成すると共に、液相
管の流路切り替えにより、室外機で放熱して凝縮した液
体を、蒸気との比重差と、前記ポンプの吐出力とを利用
して室内機に搬送し、室内機で吸熱・蒸発させて各室内
機において冷房可能に構成した装置において、前記ポン
プの回転をポンプの極数変換またはポンプに供給する電
力の周波数を変換して制御する制御手段を備えたことを
特徴とする空調装置。An outdoor unit and a plurality of indoor units, all or a majority of which are installed below the outdoor unit, are connected by a gas phase pipe and a liquid phase pipe having a pump, and the outdoor unit absorbs heat. The vaporized gas is introduced into the indoor unit to radiate and condense the liquid, and the condensed liquid is returned to the outdoor unit by the discharge force of the pump. By switching, the liquid radiated and condensed by the outdoor unit is conveyed to the indoor unit using the specific gravity difference with the steam and the discharge force of the pump, and the indoor unit absorbs heat and evaporates to cool the indoor unit. An air conditioner, comprising: a control unit for controlling the rotation of the pump by converting the number of poles of the pump or the frequency of electric power supplied to the pump.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8324232A JPH10170179A (en) | 1996-12-04 | 1996-12-04 | Air conditioning apparatus |
| US08/984,017 US5966954A (en) | 1996-12-04 | 1997-12-03 | Air conditioning system |
| KR1019970065880A KR100502283B1 (en) | 1996-12-04 | 1997-12-04 | Air conditioning system |
| CNB971208352A CN1149357C (en) | 1996-12-04 | 1997-12-04 | Air-conditioning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8324232A JPH10170179A (en) | 1996-12-04 | 1996-12-04 | Air conditioning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10170179A true JPH10170179A (en) | 1998-06-26 |
Family
ID=18163521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8324232A Pending JPH10170179A (en) | 1996-12-04 | 1996-12-04 | Air conditioning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10170179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004309032A (en) * | 2003-04-08 | 2004-11-04 | Hiroshi Ogawa | Central air conditioning and heating equipment and its operation control method |
| JP2007240062A (en) * | 2006-03-08 | 2007-09-20 | Japan Steel Works Ltd:The | Cold/hot heat output method and device for absorption cooling/heating machine |
| GB2464984A (en) * | 2008-11-03 | 2010-05-05 | Laing O Rourke Plc | Energy efficient zonal climate control system for commercial buildings |
-
1996
- 1996-12-04 JP JP8324232A patent/JPH10170179A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004309032A (en) * | 2003-04-08 | 2004-11-04 | Hiroshi Ogawa | Central air conditioning and heating equipment and its operation control method |
| JP2007240062A (en) * | 2006-03-08 | 2007-09-20 | Japan Steel Works Ltd:The | Cold/hot heat output method and device for absorption cooling/heating machine |
| GB2464984A (en) * | 2008-11-03 | 2010-05-05 | Laing O Rourke Plc | Energy efficient zonal climate control system for commercial buildings |
| GB2464984B (en) * | 2008-11-03 | 2010-09-15 | Laing O Rourke Plc | Environmental climate control for commercial buildings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100502283B1 (en) | Air conditioning system | |
| JPH10170179A (en) | Air conditioning apparatus | |
| JP3630892B2 (en) | Air conditioner | |
| US5924480A (en) | Air conditioning system | |
| JP3318505B2 (en) | Control device for absorption air conditioner | |
| JP3594426B2 (en) | Air conditioner | |
| JP3599980B2 (en) | Operating method of air conditioner | |
| JPH11148694A (en) | Method for controlling operation of air conditioner | |
| JP3663029B2 (en) | Air conditioner | |
| JP3663028B2 (en) | Air conditioner | |
| JPH10132331A (en) | Air conditioner | |
| JP3615353B2 (en) | Operation control method for air conditioner | |
| JP3568380B2 (en) | Operating method of air conditioner | |
| JP3762542B2 (en) | Air conditioner | |
| JP3594453B2 (en) | Operating method of air conditioner | |
| JPH07151359A (en) | Refrigerant circulation type air conditioning system | |
| JPH11148681A (en) | Air conditioner | |
| JPH10132334A (en) | Air conditioner | |
| JPH10132333A (en) | Air conditioner | |
| JPH10132332A (en) | Air conditioner | |
| JPH0638246Y2 (en) | Refrigerant natural circulation type cooling system | |
| JP3604869B2 (en) | Operation control method of air conditioner | |
| JPH11351690A (en) | Air conditioner and method for operating it | |
| JPH11148744A (en) | Air conditioner | |
| JPH11148738A (en) | Air conditioner and air conditioning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20041201 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050405 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050802 |