JP3361458B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3361458B2 JP3361458B2 JP22455798A JP22455798A JP3361458B2 JP 3361458 B2 JP3361458 B2 JP 3361458B2 JP 22455798 A JP22455798 A JP 22455798A JP 22455798 A JP22455798 A JP 22455798A JP 3361458 B2 JP3361458 B2 JP 3361458B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- temperature
- reheater
- capacity
- indoor
- 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
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- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、吹き出し空気温
度の急激な変動を嫌う部屋たとえば電算機室や通信機室
に設置される空気調和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner installed in a room, such as a computer room or a communication room, which is averse to sudden changes in blown air temperature.
【０００２】[0002]
【従来の技術】空気調和機の省エネルギ運転を行う手法
としてインバータによる圧縮機の容量可変運転（インバ
ータの出力周波数制御）が知られているが、圧縮機のイ
ンバータ駆動に際しては圧縮機モータから高調波の逆相
電流が生じてしまう。昨今、この高調波にどのように対
処するかが重要な課題となっている。2. Description of the Related Art Variable capacity operation of a compressor by an inverter (inverter output frequency control) is known as a method for performing energy-saving operation of an air conditioner. An opposite phase current of the wave is generated. Recently, how to deal with this harmonic has become an important issue.
【０００３】一方、除湿時に室内への吹き出し空気温度
が下がり過ぎるのを防ぐため、室内側に再熱器を設けた
空気調和機がある。すなわち、蒸発器で冷却および除湿
された空気を再熱器で温めて温度上昇させた後、室内に
吹出すようにしている。いわゆるレヒート機能である。On the other hand, there is an air conditioner provided with a reheater on the indoor side in order to prevent the temperature of the air blown into the room from dropping too much during dehumidification. That is, the air cooled and dehumidified by the evaporator is warmed by the reheater to raise its temperature and then blown out into the room. This is the so-called reheat function.
【０００４】このレヒート機能を有する空気調和機とし
て、特開昭５４−１５４２２２号公報（特願昭５３−６
２３２７号）に示されるものがある。また、特開昭６０
−５７１４２号公報（特願昭５８−１１５３５６号）に
示される空気調和機は、レヒート機能を保有する冷凍サ
イクルに容量制御可能な圧縮機を備え、省エネルギ性を
考慮した運転および温湿度制御性を考慮した運転を行う
ようにしている。An air conditioner having a reheat function is disclosed in Japanese Patent Application Laid-Open No. 54-154222 (Japanese Patent Application No. 53-6).
2327). In addition, JP-A-60
An air conditioner disclosed in Japanese Patent Application No. 57142 (Japanese Patent Application No. 58-115356) is provided with a compressor capable of controlling a capacity in a refrigerating cycle having a reheat function, and has an operation and temperature / humidity controllability considering energy saving. I am trying to drive in consideration of.
【０００５】[0005]
【発明が解決しようとする課題】ただし、レヒー卜機能
は、温湿度制御性を向上させる点では優れているが、凝
縮器で外気に放出する熱をわざわざ室内機側で放熱する
方式であるため、エネルギー消費量が増大するという点
で省エネルギ性に問題がある。However, the reheat function is excellent in that the temperature and humidity controllability is improved, but since the heat released to the outside in the condenser is purposely radiated in the indoor unit side. However, there is a problem in energy saving in that the energy consumption increases.
【０００６】また、特開昭６０−５７１４２号公報に示
されるものでは、全ての圧縮機をインバータ駆動するた
め、インバータ容量が大きくなり、高調波の逆相電流が
増大するという問題がある。Further, the device disclosed in Japanese Patent Laid-Open No. 60-57142 has a problem that since all the compressors are driven by inverters, the capacity of the inverter becomes large and the reverse phase current of the harmonic wave increases.
【０００７】この発明は上記の事情を考慮したもので、
その目的とするところは、十分な高調波対策を確保しな
がら、省エネルギ性を優先する運転および温湿度制御性
を優先する運転が可能な空気調和機を提供することにあ
る。The present invention takes the above circumstances into consideration,
It is an object of the present invention to provide an air conditioner capable of performing operation that prioritizes energy saving and temperature and humidity controllability while ensuring sufficient measures against harmonics.
【０００８】[0008]
【課題を解決するための手段】請求項１に係る発明は、
容量可変の第１圧縮機、第１凝縮器、第１膨張弁、第１
蒸発器を接続して冷媒を流す第１冷凍サイクルと、容量
固定の第２圧縮機、第２凝縮器、第２膨張弁、第２蒸発
器を接続して冷媒を流すとともに、第２圧縮機から吐出
される冷媒の一部を流量調整弁に通して再熱器に流しそ
の再熱器を経た冷媒を第２膨張弁の冷媒流入側に流す第
２冷凍サイクルと、室内空気を吸い込み、その吸い込み
空気を第１蒸発器、第２蒸発器、再熱器に通して室内に
吹出す室内ファンと、室内空気の温度を検知する室内温
度センサと、この室内温度センサの検知温度と設定値と
の差に応じて各圧縮機の運転・停止および第１圧縮機の
容量を制御する制御手段と、第１圧縮機の容量変化を主
体にした温湿度制御の各種運転を、室内温度センサの検
知温度と設定値との比較、第１圧縮機の容量、第２圧縮
機の運転・停止状態に応じて選択的に実行する第１制御
手段と、流量調整弁の開度に基づく再熱器の放熱量変化
を主体にした温湿度制御の各種運転を、室内温度センサ
の検知温度と設定値との比較、再熱器の放熱量、第１圧
縮機の運転・停止状態に応じて選択的に実行する第２制
御手段と、第１制御手段による運転および第２制御手段
による運転のいずれか一方を選択する選択手段と、を備
える。The invention according to claim 1 is
Variable capacity first compressor, first condenser, first expansion valve, first
The first refrigeration cycle that connects the evaporator and flows the refrigerant, and the capacity
Fixed second compressor, second condenser, second expansion valve, second evaporation
Discharge from the second compressor while connecting the compressor to flow the refrigerant
A part of the refrigerant to be supplied is passed through the flow rate control valve and flowed to the reheater.
The refrigerant which has flowed through the reheater and a second refrigeration cycle flowing through the refrigerant inflow side of the second expansion valve, suction indoor air, suction thereof
Pass the air through the first evaporator, the second evaporator, and the reheater into the room.
Indoor fan that blows out and indoor temperature that detects the temperature of indoor air
Temperature sensor and the detected temperature and set value of this indoor temperature sensor
Depending on the difference between the
It mainly controls the capacity change of the first compressor and the control means for controlling the capacity.
Various indoor temperature / humidity control operations can be monitored using the indoor temperature sensor.
Comparison of known temperature and set value, capacity of the first compressor, second compression
Control that is selectively executed according to the operating / stopped state of the machine
And the amount of heat release of the reheater based on the opening of the flow control valve
Indoor temperature sensor for various temperature and humidity control operations
Comparison of detected temperature and set value, heat dissipation of reheater, first pressure
Second system that is selectively executed according to the operating / stop status of the compressor
Control means, operation by the first control means, and second control means
Selecting means for selecting either one of the driving by
【０００９】請求項２に係る発明は、容量可変の第１圧
縮機、第１凝縮器、第１膨張弁、第１蒸発器を接続して
冷媒を流す第１冷凍サイクルと、容量固定の第２圧縮
機、第２凝縮器、第２膨張弁、第２蒸発器を接続して冷
媒を流すとともに、第２圧縮機から吐出される冷媒の一
部を流量調整弁に通して再熱器に流しその再熱器を経た
冷媒を第２膨張弁の冷媒流入側に流す第２冷凍サイクル
と、室内空気を吸い込み、その吸い込み空気を第１蒸発
器、第２蒸発器、再熱器に通して室内に吹出す室内ファ
ンと、室内空気の温度を検知する室内温度センサと、こ
の室内温度センサの検知温度と設定値との差に応じて各
圧縮機の運転・停止および第１圧縮機の容量を制御する
制御手段と、省エネルギ性を優先する省エネ優先モード
および温湿度制御性を優先する温湿度優先モードを設定
するための操作手段と、この操作手段で省エネ優先モー
ドが設定されると、第１圧縮機の容量変化を主体にした
温湿度制御の各種運転を、室内温度センサの検知温度と
設定値との比較、第１圧縮機の容量、第２圧縮機の運転
・停止状態に応じて選択的に実行する第１制御手段と、
操作手段で温湿度優先モードが設定されると、流量調整
弁の開度に基づく再熱器の放熱量変化を主体にした温湿
度制御の各種運転を、室内温度センサの検知温度と設定
値との比較、再熱器の放熱量、第１圧縮機の運転・停止
状態に応じて選択的に実行する第２制御手段と、を備え
る。The invention according to claim 2 is the first pressure variable capacity
Connect the compressor, the first condenser, the first expansion valve, the first evaporator
The first refrigeration cycle in which the refrigerant flows and the second compression with a fixed capacity
Machine, second condenser, second expansion valve, second evaporator are connected to cool
One of the refrigerant discharged from the second compressor while flowing the medium.
Through the flow control valve and then to the reheater, and passed through the reheater.
A second refrigeration cycle in which the refrigerant flows to the refrigerant inflow side of the second expansion valve, and indoor air is sucked in, and the sucked air is first evaporated
Room fan that blows into the room through the evaporator, second evaporator, and reheater
And an indoor temperature sensor that detects the temperature of the indoor air.
Depending on the difference between the detected temperature of the room temperature sensor and the set value,
Controls the operation / stop of the compressor and the capacity of the first compressor
A control means, an operation means for setting an energy saving priority mode in which energy saving is prioritized and a temperature / humidity priority mode in which temperature / humidity control is prioritized , and an energy saving priority mode is set by this operation means.
When the mode is set, the capacity of the first compressor is mainly changed.
Various operations of temperature and humidity control are performed by detecting the temperature detected by the indoor temperature sensor.
Comparison with set value, capacity of the first compressor, operation of the second compressor
First control means for selectively executing according to the stopped state,
When the temperature / humidity priority mode is set by the operating means, flow rate adjustment
Temperature / humidity mainly based on the change in the amount of heat released by the reheater based on the valve opening
Temperature control operation, set temperature detected by indoor temperature sensor
Comparison with the value, heat dissipation of the reheater, start / stop of the first compressor
Second control means for selectively executing the operation according to the state .
【００１０】[0010]
【発明の実施の形態】以下、この発明の一実施例につい
て図面を参照して説明する。図１に示すように、室内機
１および室外機１０が配管接続されて本発明の空気調和
機が構成される。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the indoor unit 1 and the outdoor unit 10 are connected by piping to form an air conditioner of the present invention.
【００１１】室内機１は、複数台たとえば２台の圧縮機
１１，２１、膨張弁１３，２３、蒸発器（室内熱交換
器）１４，２４、流量調整弁３１、再熱器（補助室内熱
交換器）３２、室内ファン２、インバータ３、および制
御装置４を備える。The indoor unit 1 includes a plurality of, for example, two compressors 11 and 21, expansion valves 13 and 23, evaporators (indoor heat exchangers) 14 and 24, a flow rate adjusting valve 31, a reheater (auxiliary indoor heat). (Exchanger) 32, indoor fan 2, inverter 3, and control device 4.
【００１２】室外機１０は、凝縮器（室外熱交換器）１
２，２２および室外ファン７を備える。圧縮機１１の冷
媒吐出口に凝縮器１２が配管接続され、凝縮器１２に膨
張弁１３を介して蒸発器１４が配管接続される。さら
に、蒸発器１４に圧縮機１１の冷媒吸込口が配管接続さ
れる。これにより、第１冷凍サイクルが構成される。The outdoor unit 10 includes a condenser (outdoor heat exchanger) 1
2, 22 and the outdoor fan 7. A condenser 12 is pipe-connected to the refrigerant discharge port of the compressor 11, and an evaporator 14 is pipe-connected to the condenser 12 via an expansion valve 13. Further, the refrigerant suction port of the compressor 11 is connected to the evaporator 14 by piping. This constitutes the first refrigeration cycle.
【００１３】一方、圧縮機２１の冷媒吐出口に凝縮器２
２が配管接続され、凝縮器２２に膨張弁２３を介して蒸
発器２４が配管接続される。さらに、蒸発器２４に圧縮
機２１の冷媒吸込口が配管接続される。また、圧縮機２
１の冷媒吐出口に流量調整弁３１を介して再熱器３２が
配管接続され、再熱器３２は膨張弁２３の冷媒流入側に
配管接続される。これにより、第２冷凍サイクルが構成
される。On the other hand, the condenser 2 is connected to the refrigerant discharge port of the compressor 21.
2 is pipe-connected, and the evaporator 24 is pipe-connected to the condenser 22 via the expansion valve 23. Further, the refrigerant suction port of the compressor 21 is connected to the evaporator 24 by piping. Also, the compressor 2
The reheater 32 is pipe-connected to the refrigerant discharge port of No. 1 via the flow rate adjusting valve 31, and the reheater 32 is pipe-connected to the refrigerant inflow side of the expansion valve 23. This constitutes the second refrigeration cycle.
【００１４】上記蒸発器１４，２４および再熱器３２
は、互いに相対向する位置に設けられている。室内ファ
ン２は、室内空気を吸い込み、その吸い込み空気を蒸発
器１４，２４および再熱器３２に通して室内に吹き出
す。The evaporators 14 and 24 and the reheater 32
Are provided at positions facing each other. The indoor fan 2 sucks in indoor air, passes the sucked air through the evaporators 14, 24 and the reheater 32, and blows it out into the room.
【００１５】インバータ３は、商用電源（図示しない）
の電圧を整流し、それを制御装置４の指令に応じた周波
数の交流電圧に変換して出力する。この出力が圧縮機１
１に駆動電力として供給される。The inverter 3 is a commercial power source (not shown).
Is rectified, converted into an AC voltage having a frequency according to a command from the control device 4, and output. This output is the compressor 1
1 is supplied as driving power.
【００１６】第１冷凍サイクルでは、圧縮機１１が運転
されると、圧縮機１１から吐出されるガス状の冷媒が室
外機１０の凝縮器１２に供給され、冷媒は外気に熱を放
出して液化する。凝縮器１２で液化した冷媒は膨張弁１
３で減圧されて室内機１の蒸発器１４に流れ、そこで室
内空気から熱を奪って蒸発する。蒸発した冷媒は圧縮機
１１に吸い込まれる。In the first refrigeration cycle, when the compressor 11 is operated, the gaseous refrigerant discharged from the compressor 11 is supplied to the condenser 12 of the outdoor unit 10, and the refrigerant releases heat to the outside air. Liquefy. The refrigerant liquefied in the condenser 12 is the expansion valve 1
It is decompressed in 3 and flows into the evaporator 14 of the indoor unit 1, where heat is taken from the indoor air to evaporate. The evaporated refrigerant is sucked into the compressor 11.
【００１７】第２冷凍サイクルでは、圧縮機２１が運転
されると、圧縮機２１から吐出されるガス状の冷媒が室
外機１０の凝縮器２２に供給され、冷媒は外気に熱を放
出して液化する。凝縮器２２で液化した冷媒は膨張弁２
３で減圧されて室内機１の蒸発器２４に流れ、そこで室
内空気から熱を奪って蒸発する。蒸発した冷媒は圧縮機
２１に吸い込まれる。In the second refrigeration cycle, when the compressor 21 is operated, the gaseous refrigerant discharged from the compressor 21 is supplied to the condenser 22 of the outdoor unit 10, and the refrigerant releases heat to the outside air. Liquefy. The refrigerant liquefied in the condenser 22 is the expansion valve 2
It is decompressed in 3 and flows into the evaporator 24 of the indoor unit 1, where heat is taken from the indoor air to evaporate. The evaporated refrigerant is sucked into the compressor 21.
【００１８】流量調整弁３１が開いていれば、圧縮機２
１の吐出冷媒の一部が流量調整弁３１を通って再熱器３
２に流入し、冷媒は蒸発器１４，２４を経た冷却用空気
に熱を放出して液化する。この放熱により冷却用空気の
温度が上昇する。流量調整弁３１の開度が変わると再熱
器３２への冷媒流入量が変化し、それに伴って冷却用空
気に対する再熱量いわゆるレヒート能力が変化する。再
熱器３２で液化した冷媒は膨張弁２３への冷媒流に合流
する。If the flow rate adjusting valve 31 is open, the compressor 2
A part of the discharge refrigerant of 1 passes through the flow rate adjusting valve 31 and the reheater 3
2, the refrigerant releases heat to the cooling air that has passed through the evaporators 14 and 24 and is liquefied. The heat dissipation raises the temperature of the cooling air. When the opening degree of the flow rate adjusting valve 31 changes, the amount of refrigerant flowing into the reheater 32 changes, and accordingly, the amount of reheat of the cooling air, so-called reheat capacity, changes. The refrigerant liquefied in the reheater 32 joins the refrigerant flow to the expansion valve 23.
【００１９】制御装置４に、室内温度センサ５および操
作器（操作手段）６が接続される。室内温度センサ５
は、被空調室内の空気温度を検知する。操作器６は、運
転モードの設定や室内温度の設定を行うためのもので、
とくに、省エネルギ性を優先する省エネ優先モードの設
定および温湿度制御性を優先する温湿度制御優先モード
の設定が可能となっている。An indoor temperature sensor 5 and an operating device (operating means) 6 are connected to the control device 4. Indoor temperature sensor 5
Detects the air temperature in the air-conditioned room. The operation device 6 is for setting the operation mode and the room temperature,
In particular, it is possible to set an energy saving priority mode that prioritizes energy saving and a temperature and humidity control priority mode that prioritizes temperature and humidity controllability.
【００２０】そして、制御装置４は、主要な機能手段と
して次の［１］〜［３］を備えている。
［１］第１冷凍サイクルにおける圧縮機１１の容量可変
運転（インバータ３の出力周波数制御）を主体にした温
湿度制御を実行する第１制御手段。The control device 4 has the following [1] to [3] as main functional means. [1] First control means for executing temperature / humidity control mainly based on variable capacity operation of the compressor 11 (output frequency control of the inverter 3) in the first refrigeration cycle.
【００２１】［２］第２冷凍サイクルにおける再熱器３
２の運転を主体にした温湿度制御を実行する第２制御手
段。
［３］第１制御手段による温湿度制御の実行および第２
制御手段による温湿度制御の実行のいずれか一方を操作
器６の操作に応じて選択する選択手段。具体的には、操
作器６で省エネ優先モードが設定されると第１制御手段
による温湿度制御の実行を選択し、操作器６で温湿度制
御優先モードが設定されると第２制御手段による温湿度
制御の実行を選択する。[2] Reheater 3 in the second refrigeration cycle
Second control means for executing temperature / humidity control mainly for the operation of 2. [3] Execution of temperature and humidity control by the first control means and second
Selection means for selecting one of execution of temperature and humidity control by the control means according to operation of the operation device 6. Specifically, when the energy saving priority mode is set by the operation device 6, the execution of temperature / humidity control by the first control means is selected, and when the temperature / humidity control priority mode is set by the operation device 6, the second control means is selected. Select execution of temperature and humidity control.
【００２２】つぎに、上記の構成の作用を図２のフロー
チャートを参照して説明する。まず、室内温度センサ５
の検知温度と操作器６での室内温度設定値との差に応じ
て圧縮機１１，２１が運転または停止（中断）される。
このうち、圧縮機１１の運転については、検知温度と設
定値との差に応じて運転周波数（インバータ３の出力周
波数）が制御される。検知温度が設定値より高いほど運
転周波数が高く設定されて圧縮機１１の容量（能力）が
増大する。圧縮機２１については、商用電源駆動による
容量固定運転が行われる。Next, the operation of the above configuration will be described with reference to the flowchart of FIG. First, the indoor temperature sensor 5
The compressors 11 and 21 are operated or stopped (interrupted) in accordance with the difference between the detected temperature of 1 and the room temperature setting value of the operating device 6.
Among these, regarding the operation of the compressor 11, the operating frequency (the output frequency of the inverter 3) is controlled according to the difference between the detected temperature and the set value. As the detected temperature is higher than the set value, the operating frequency is set higher and the capacity (capacity) of the compressor 11 increases. As for the compressor 21, the fixed capacity operation is performed by driving the commercial power source.
【００２３】操作器６で省エネ優先モードが設定される
と、第１冷凍サイクルにおける圧縮機１１の容量可変運
転（インバータ３の出力周波数制御）を主体にした次の
温湿度制御が実行される。When the energy-saving priority mode is set by the operating device 6, the next temperature / humidity control is executed mainly by the capacity variable operation of the compressor 11 (output frequency control of the inverter 3) in the first refrigeration cycle.
【００２４】室内温度センサ５の検知温度が操作器６で
の室内温度設定値より高く、かつ圧縮機１１の運転周波
数が最大の場合、レヒート側の圧縮機２１が運転状態に
あれば、流量調整弁３１が小開度に設定されて再熱器３
２の放熱量が低く設定される（レヒート能力「低」）。When the temperature detected by the room temperature sensor 5 is higher than the room temperature set value by the operating device 6 and the operating frequency of the compressor 11 is maximum, if the compressor 21 on the reheat side is in the operating state, the flow rate is adjusted. Valve 31 is set to a small opening and reheater 3
The heat radiation amount of 2 is set low (reheat capability “low”).
【００２５】検知温度が設定値より高く、かつ圧縮機１
１の運転周波数が最大の場合、圧縮機２１が停止（中
断）していれば、圧縮機２１が運転されるとともに、圧
縮機１１の運転周波数が低く設定される。全体的な冷房
能力を少し高くするような調節となる。The detected temperature is higher than the set value and the compressor 1
When the operating frequency of 1 is the maximum, and the compressor 21 is stopped (interrupted), the operating frequency of the compressor 11 is set low while the compressor 21 is operating. It will be adjusted to slightly increase the overall cooling capacity.
【００２６】検知温度が設定値より高く、かつ圧縮機１
１が停止（中断）している場合、その圧縮機１１が運転
される。必要に応じて、圧縮機１１の運転周波数が高く
設定される。The detected temperature is higher than the set value, and the compressor 1
When 1 is stopped (interrupted), the compressor 11 is operated. The operating frequency of the compressor 11 is set high as necessary.
【００２７】検知温度が設定値と同じまたはそれより低
く、かつ圧縮機１１の運転周波数が最小の場合、圧縮機
２１が運転状態にあれば、圧縮機２１が停止されるとと
もに、圧縮機１１の運転周波数が低く設定される。全体
的な冷房能力を少し低くするような調節となる。When the detected temperature is equal to or lower than the set value and the operating frequency of the compressor 11 is the minimum, and the compressor 21 is in the operating state, the compressor 21 is stopped and the compressor 11 The operating frequency is set low. The adjustment is to lower the overall cooling capacity.
【００２８】検知温度が設定値と同じまたはそれより低
く、かつ圧縮機１１の運転周波数が最小の場合、圧縮機
２１が停止していれば、圧縮機１１も停止される。検知
温度が設定値と同じまたはそれより低く、かつ圧縮機１
１の運転周波数が最小でない場合、圧縮機１１の運転周
波数が低く設定される。When the detected temperature is equal to or lower than the set value and the operating frequency of the compressor 11 is the minimum, if the compressor 21 is stopped, the compressor 11 is also stopped. The detected temperature is equal to or lower than the set value, and the compressor 1
When the operating frequency of 1 is not the minimum, the operating frequency of the compressor 11 is set low.
【００２９】このように、圧縮機１１の容量可変運転を
主体にした温湿度制御を実行することにより、省エネル
ギ性を優先した運転を行うことができる。一方、操作器
６で温湿度制御優先モードが設定されると、第２冷凍サ
イクルにおける再熱器３２の運転を主体にした次の温湿
度制御が実行される。As described above, by performing the temperature and humidity control mainly on the variable capacity operation of the compressor 11, it is possible to perform the operation in which the energy saving is prioritized. On the other hand, when the temperature / humidity control priority mode is set by the operation device 6, the next temperature / humidity control mainly based on the operation of the reheater 32 in the second refrigeration cycle is executed.
【００３０】検知温度が設定値より高く、かつ再熱器３
２の放熱量が最小（レヒート能力最小）の場合、圧縮機
１１が運転状態にあれば、圧縮機１１の運転周波数が高
く設定される。The detected temperature is higher than the set value, and the reheater 3
When the heat radiation amount of 2 is the minimum (the reheat ability is the minimum), if the compressor 11 is in the operating state, the operating frequency of the compressor 11 is set high.
【００３１】検知温度が設定値より高く、かつ再熱器３
２の放熱量が最小（レヒート能力最小）の場合、圧縮機
１１の運転が停止していれば、圧縮機１１が運転される
とともに、再熱器３２の放熱量が増大される。全体的な
冷房能力を少し高くするような調節となる。The detected temperature is higher than the set value, and the reheater 3
When the heat radiation amount of 2 is the minimum (the reheat capability is the minimum), if the operation of the compressor 11 is stopped, the compressor 11 is operated and the heat radiation amount of the reheater 32 is increased. It will be adjusted to slightly increase the overall cooling capacity.
【００３２】検知温度が設定値より高く、かつ再熱器３
２の放熱量が最小（レヒート能力最小）でない場合、圧
縮機１１が運転されるか、または再熱器３２の放熱量が
減少される。The detected temperature is higher than the set value, and the reheater 3
When the heat radiation amount of 2 is not the minimum (reheat capability minimum), the compressor 11 is operated or the heat radiation amount of the reheater 32 is reduced.
【００３３】検知温度が設定値と同じまたはそれより低
く、かつ再熱器３２の放熱量が最大（レヒート能力最
大）の場合、圧縮機１１が運転状態にあれば、圧縮機１
１の運転周波数が低く設定されるか、または圧縮機１１
が停止される。さらに、再熱器３２の放熱量が減少され
る。全体的な冷房能力を少し低くするような調節とな
る。When the detected temperature is equal to or lower than the set value and the amount of heat released by the reheater 32 is maximum (maximum reheat capacity), if the compressor 11 is in operation, the compressor 1
1, the operating frequency is set low, or the compressor 11
Is stopped. Further, the heat radiation amount of the reheater 32 is reduced. The adjustment is to lower the overall cooling capacity.
【００３４】検知温度が設定値と同じまたはそれより低
く、かつ再熱器３２の放熱量が最大（レヒート能力最
大）の場合、圧縮機１１が停止していれば、圧縮機２１
の運転も停止される。When the detected temperature is equal to or lower than the set value and the amount of heat released by the reheater 32 is maximum (the maximum reheat capacity), the compressor 21 is stopped if the compressor 11 is stopped.
Driving is also stopped.
【００３５】検知温度が設定値と同じまたはそれより低
く、かつ再熱器３２の放熱量が最大（レヒート能力最
大）でない場合、再熱器３２の放熱量が増大される。こ
のように、再熱器３２の運転を主体にした温湿度制御を
実行することによって、温湿度制御性を優先した運転つ
まり制度の高い温湿度制御を行うことができる。When the detected temperature is equal to or lower than the set value and the heat radiation amount of the reheater 32 is not the maximum (reheat capability maximum), the heat radiation amount of the reheater 32 is increased. As described above, by executing the temperature / humidity control mainly on the operation of the reheater 32, it is possible to perform the operation in which the temperature / humidity controllability is prioritized, that is, the highly accurate temperature / humidity control.
【００３６】とくに、空調対象である室内の状況などに
応じて、この温湿度制御性を優先した運転を行うか、上
記の省エネルギ性を優先した運転を行うかを自由に選択
できるので、状況に応じた最適な空調を行うことができ
る。In particular, depending on the condition of the room to be air-conditioned, etc., it is possible to freely select whether to perform the operation in which the temperature / humidity controllability is prioritized or the above-mentioned energy saving property is prioritized. Optimal air conditioning can be performed according to
【００３７】しかも、圧縮機１１，２１のうち、インバ
ータ駆動は圧縮機１１だけであるから、インバータ容量
が増大することはなく、ひいては高調波の逆相電流の増
大を回避することができ、高調波対策としても満足でき
る結果が得られる。Moreover, of the compressors 11 and 21, only the compressor 11 drives the inverter, so that the inverter capacity does not increase, and consequently the increase of the reverse phase current of the harmonic can be avoided, and Satisfactory results can be obtained as a wave countermeasure.
【００３８】なお、上記実施例では、圧縮機の台数が２
台の場合を例に説明したが、圧縮機の台数に限定はな
い。そのた、この発明は上記実施例に限定されるもので
はなく、要旨を変えない範囲で種々変形実施可能であ
る。In the above embodiment, the number of compressors is two.
Although the case of a single compressor has been described as an example, the number of compressors is not limited. Moreover, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.
【００３９】[0039]
【発明の効果】以上述べたようにこの発明によれば、十
分な高調波対策を確保しながら、省エネルギ性を優先す
る運転および温湿度制御性を優先する運転を空調対象な
どに応じて選択し得る空気調和機を提供できる。As described above, according to the present invention, while ensuring sufficient measures against harmonics, the operation that prioritizes energy saving and the operation that prioritizes temperature / humidity controllability are selected according to the target of air conditioning. A possible air conditioner can be provided.
【図１】一実施例の構成を示す図。FIG. 1 is a diagram showing a configuration of an embodiment.
【図２】同実施例の作用を説明するためのフローチャー
ト。FIG. 2 is a flowchart for explaining the operation of the embodiment.
１…室内機 ２…室内ファン ３…インバータ ４…制御装置 ５…室内温度センサ ６…操作器 ７…室外ファン １０…室外機 １１，２１…圧縮機 １２，２２…凝縮器 １３，２３…膨張弁 １４，２４…蒸発器 ３１…流量調整弁 ３２…再熱器 1 ... Indoor unit 2 ... Indoor fan 3 ... Inverter 4 ... Control device 5 ... Indoor temperature sensor 6 ... Operation device 7. Outdoor fan 10 ... Outdoor unit 11, 21 ... Compressor 12, 22 ... Condenser 13, 23 ... Expansion valve 14, 24 ... Evaporator 31 ... Flow control valve 32 ... Reheater
フロントページの続き (72)発明者 千葉 和夫 東京都港区芝浦三丁目４番１号 株式会 社エヌ・ティ・ティファシリティーズ内 (72)発明者 佐々木 晃 東京都新宿区西新宿三丁目19番２号 日 本電信電話株式会社内 (56)参考文献 特開 昭60−57142（ＪＰ，Ａ) 特開 平３−217744（ＪＰ，Ａ) 特開 昭53−97734（ＪＰ，Ａ) 特開 平８−313097（ＪＰ，Ａ) 特開 平６−180140（ＪＰ，Ａ) 特開 昭57−92639（ＪＰ，Ａ) 実開 昭57−28272（ＪＰ，Ｕ) 実開 平２−55025（ＪＰ，Ｕ) 実公 昭55−46909（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F24F 11/02 Front page continuation (72) Inventor Kazuo Chiba 3-4-1, Shibaura, Minato-ku, Tokyo Within NTT Facilities Co., Ltd. (72) Inventor Akira Sasaki 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo No. Japan Telegraph and Telephone Corporation (56) Reference JP-A-60-57142 (JP, A) JP-A-3-217744 (JP, A) JP-A-53-97734 (JP, A) JP-A-8 -313097 (JP, A) JP-A-6-180140 (JP, A) JP-A-57-92639 (JP, A) Actually opened 57-28272 (JP, U) Actually opened 2-55025 (JP, U) ) Actual Public Sho 55-46909 (JP, Y1) (58) Fields investigated (Int.Cl. 7 , DB name) F24F 11/02
Claims (2)
１膨張弁、第１蒸発器を接続して冷媒を流す第１冷凍サ
イクルと、容量固定の第２圧縮機、第２凝縮器、第２膨張弁、第２
蒸発器を接続して冷媒を流すとともに、第２圧縮機から
吐出される冷媒の一部を流量調整弁に通して再熱器に流
しその再熱器を経た冷媒を第２膨張弁の冷媒流入側に流
す 第２冷凍サイクルと、室内空気を吸い込み、その吸い込み空気を前記第１蒸発
器、前記第２蒸発器、前記再熱器に通して室内に吹出す
室内ファンと、 室内空気の温度を検知する室内温度センサと、 前記室内温度センサの検知温度と設定値との差に応じて
前記各圧縮機の運転・停止および第１圧縮機の容量を制
御する制御手段と、 前記第１圧縮機の容量変化を主体にした温湿度制御の各
種運転を、前記室内温度センサの検知温度と前記設定値
との比較、前記第１圧縮機の容量、前記第２圧縮機の運
転・停止状態に応じて選択的に実行する第１制御手段
と、 前記流量調整弁の開度に基づく前記再熱器の放熱量変化
を主体にした温湿度制御の各種運転を、前記室内温度セ
ンサの検知温度と前記設定値との比較、前記再熱器の放
熱量、前記第１圧縮機の運転・停止状態に応じて選択的
に実行する第２制御手段と、 前記第１制御手段による運転および前記第２制御手段に
よる運転 のいずれか一方を選択する選択手段と、 を具備したことを特徴とする空気調和機。1. A variable capacity first compressor, a first condenser, and a first variable capacity compressor.
1st expansion valve, 1st evaporator, 1st refrigerating cycle which makes a refrigerant | coolant flow , 2nd compressor of fixed capacity, 2nd condenser, 2nd expansion valve, 2nd
While connecting the evaporator and flowing the refrigerant, the second compressor
A part of the discharged refrigerant is passed through the flow rate control valve to flow to the reheater.
Flow through the reheater to the refrigerant inflow side of the second expansion valve.
And to a second refrigeration cycle, it sucks indoor air, the suction on the first evaporation air
Blow out indoors through the vessel, the second evaporator, and the reheater
An indoor fan, an indoor temperature sensor that detects the temperature of indoor air, and a difference between a detected temperature of the indoor temperature sensor and a set value.
Controls the operation / stop of each compressor and the capacity of the first compressor.
Control means for controlling temperature and humidity mainly based on the capacity change of the first compressor
Seed operation, the temperature detected by the indoor temperature sensor and the set value
The capacity of the first compressor and the operation of the second compressor.
First control means for selectively executing according to the rotation / stop state
And the change in the amount of heat released by the reheater based on the opening of the flow rate adjustment valve
The various indoor temperature and humidity control operations mainly
Compare the temperature detected by the sensor with the set value and discharge the reheater.
Selective according to heat quantity, operating / stop status of the first compressor
To the second control means to be executed by the first control means and the second control means.
An air conditioner comprising: a selection unit that selects either one of the following operations .
１膨張弁、第１蒸発器を接続して冷媒を流す第１冷凍サ
イクルと、容量固定の第２圧縮機、第２凝縮器、第２膨張弁、第２
蒸発器を接続して冷媒を流すとともに、第２圧縮機から
吐出される冷媒の一部を流量調整弁に通して再熱器に流
しその再熱器を経た冷媒を第２膨張弁の冷媒流入側に流
す 第２冷凍サイクルと、室内空気を吸い込み、その吸い込み空気を前記第１蒸発
器、前記第２蒸発器、 前記再熱器に通して室内に吹出す
室内ファンと、 室内空気の温度を検知する室内温度センサと、 前記室内温度センサの検知温度と設定値との差に応じて
前記各圧縮機の運転・停止および第１圧縮機の容量を制
御する制御手段と、 省エネルギ性を優先する省エネ優先モードおよび温湿度
制御性を優先する温湿度優先モードを設定するための操
作手段と、前記操作手段で省エネ優先モードが設定されると、前記
第１圧縮機の容量変化を主体にした温湿度制御の各種運
転を、前記室内温度センサの検知温度と前記設定値との
比較、前記第１圧縮機の容量、前記第２圧縮機の運転・
停止状態に応じて選択的に実行する第１制御手段と、 前記操作手段で温湿度優先モードが設定されると、前記
流量調整弁の開度に基づく前記再熱器の放熱量変化を主
体にした温湿度制御の各種運転を、前記室内温度センサ
の検知温度と前記設定値との比較、前記再熱器の放熱
量、前記第１圧縮機の運転・停止状態に応じて選択的に
実行する第２制御手段と、 を具備したことを特徴とする空気調和機。2. A variable capacity first compressor, a first condenser, and a first variable capacity compressor.
1st expansion valve, 1st evaporator, 1st refrigerating cycle which makes a refrigerant | coolant flow , 2nd compressor of fixed capacity, 2nd condenser, 2nd expansion valve, 2nd
While connecting the evaporator and flowing the refrigerant, the second compressor
A part of the discharged refrigerant is passed through the flow rate control valve to flow to the reheater.
Flow through the reheater to the refrigerant inflow side of the second expansion valve.
And to a second refrigeration cycle, it sucks indoor air, the suction on the first evaporation air
Blow out indoors through the vessel, the second evaporator, and the reheater
An indoor fan, an indoor temperature sensor that detects the temperature of indoor air, and a difference between a detected temperature of the indoor temperature sensor and a set value.
Controls the operation / stop of each compressor and the capacity of the first compressor.
Control means, an operation means for setting an energy saving priority mode giving priority to energy saving and a temperature / humidity priority mode giving priority to temperature / humidity controllability, and an energy saving priority mode being set by the operating means,
Various operations of temperature and humidity control mainly based on the capacity change of the first compressor
Between the detected temperature of the room temperature sensor and the set value.
Comparison, capacity of the first compressor, operation of the second compressor
When the temperature / humidity priority mode is set by the first control means that selectively executes according to the stopped state and the operating means,
Mainly changes the amount of heat released by the reheater based on the opening of the flow rate adjustment valve
Various indoor temperature / humidity control operations can be performed using the indoor temperature sensor.
Comparison of the detected temperature of the above with the set value, heat dissipation of the reheater
Quantity, selectively depending on the operating / stopped state of the first compressor
An air conditioner characterized by comprising: a second control means for executing .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22455798A JP3361458B2 (en) | 1998-08-07 | 1998-08-07 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22455798A JP3361458B2 (en) | 1998-08-07 | 1998-08-07 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000055436A JP2000055436A (en) | 2000-02-25 |
| JP3361458B2 true JP3361458B2 (en) | 2003-01-07 |
Family
ID=16815656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22455798A Expired - Lifetime JP3361458B2 (en) | 1998-08-07 | 1998-08-07 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3361458B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3806862B2 (en) * | 2001-02-19 | 2006-08-09 | ダイキン工業株式会社 | Air conditioner control method, air conditioning system, and program |
| US8418486B2 (en) * | 2005-04-08 | 2013-04-16 | Carrier Corporation | Refrigerant system with variable speed compressor and reheat function |
| JP5240183B2 (en) * | 2009-12-24 | 2013-07-17 | ダイキン工業株式会社 | Air conditioner |
| CN117329640B (en) * | 2023-12-01 | 2024-03-22 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
-
1998
- 1998-08-07 JP JP22455798A patent/JP3361458B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000055436A (en) | 2000-02-25 |
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