JPH11218360A - Multi-type air conditioner - Google Patents
Multi-type air conditionerInfo
- Publication number
- JPH11218360A JPH11218360A JP10020595A JP2059598A JPH11218360A JP H11218360 A JPH11218360 A JP H11218360A JP 10020595 A JP10020595 A JP 10020595A JP 2059598 A JP2059598 A JP 2059598A JP H11218360 A JPH11218360 A JP H11218360A
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- JP
- Japan
- Prior art keywords
- compressor
- pressure
- frequency
- operation amount
- determined
- 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.)
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Links
Landscapes
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、非共沸混合冷媒を
用いた多室型空気調和機に係わり、特に圧縮機の制御に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-room air conditioner using a non-azeotropic refrigerant mixture, and more particularly to control of a compressor.
【０００２】[0002]
【従来の技術】従来、この種の多室型空気調和機とし
て、例えば、特開平４−１８７９３０号公報に掲載され
たものがある。2. Description of the Related Art A multi-room air conditioner of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. 4-187930.
【０００３】以下、図面を参照しながら上述した公報の
従来の多室型空気調和機について説明する。A conventional multi-room air conditioner disclosed in the above publication will be described below with reference to the drawings.
【０００４】図６は従来の多室型空気調和機の冷凍サイ
クル図である。この図において、１は圧縮機、２は四方
弁、３は室外側熱交換器、４は室外側膨張弁であり、室
外機５に備えられている。FIG. 6 is a refrigeration cycle diagram of a conventional multi-room air conditioner. In this figure, 1 is a compressor, 2 is a four-way valve, 3 is an outdoor heat exchanger, and 4 is an outdoor expansion valve, which is provided in the outdoor unit 5.
【０００５】また各室内機６ａ，６ｂは、それぞれ室内
側膨張弁７ａ，７ｂ、室内側熱交換器８ａ，８ｂを備
え、室外機５と液管９、ガス管１０により各室内機６
ａ，６ｂが並列に配管接続され、ガス管１０には圧力検
知器１１を備えている。Each of the indoor units 6a and 6b has indoor expansion valves 7a and 7b and indoor heat exchangers 8a and 8b, respectively.
The gas pipe 10 is provided with a pressure detector 11.
【０００６】そして、室外機５には、外気温検知器１
２、室外側コントローラ１３を備え、室内機６ａ，６ｂ
には、室内側コントローラ１４ａ，１４ｂ、リモコン１
５ａ，１５ｂを備えている。The outdoor unit 5 includes an outside air temperature detector 1
2. Equipped with an outdoor controller 13, the indoor units 6a and 6b
Includes the indoor controllers 14a and 14b, the remote controller 1
5a and 15b are provided.
【０００７】以上のように構成された多室型空気調和機
の動作について説明する。まず、冷房運転について説明
する。この場合の冷媒の流れは実線矢印で表わし、圧縮
機１において圧縮された冷媒は、四方弁２を通って室外
側熱交換器３で凝縮液化され、室外側膨張弁４および液
管９を通って、室内側膨張弁７ａ，７ｂで低圧二相状態
まで減圧され、室内側熱交換器８ａ，８ｂに流入し、蒸
発気化したあと、四方弁２を介し、圧縮機１に戻り、冷
房運転を行う。The operation of the multi-room air conditioner configured as described above will be described. First, the cooling operation will be described. The flow of the refrigerant in this case is indicated by a solid line arrow, and the refrigerant compressed in the compressor 1 is condensed and liquefied in the outdoor heat exchanger 3 through the four-way valve 2 and passes through the outdoor expansion valve 4 and the liquid pipe 9. Then, the pressure is reduced to a low-pressure two-phase state by the indoor expansion valves 7a, 7b, flows into the indoor heat exchangers 8a, 8b, evaporates and returns to the compressor 1 via the four-way valve 2, and performs the cooling operation. Do.
【０００８】次に、暖房運転について説明する。この場
合の冷媒の流れは破線矢印で表わし、圧縮機１において
圧縮された冷媒は、四方弁２およびガス管１０を通り、
各室内側熱交換器８ａ，８ｂに流入し、それぞれ凝縮液
化され、各室内側膨張弁７ａ，７ｂを通って液管９に流
入する。室外側膨張弁４で低圧二相状態まで減圧され、
室外側熱交換器３に流入し、蒸発気化したあと、四方弁
２を介し、圧縮機１に戻り、暖房運転を行う。Next, the heating operation will be described. The flow of the refrigerant in this case is represented by a broken line arrow, and the refrigerant compressed in the compressor 1 passes through the four-way valve 2 and the gas pipe 10,
It flows into each indoor heat exchanger 8a, 8b, is condensed and liquefied, and flows into the liquid pipe 9 through each indoor expansion valve 7a, 7b. The pressure is reduced to a low pressure two-phase state by the outdoor expansion valve 4,
After flowing into the outdoor heat exchanger 3 and evaporating and evaporating, it returns to the compressor 1 via the four-way valve 2 and performs a heating operation.
【０００９】図７は従来の多室型空気調和機の圧縮機の
制御ブロック図であり、暖房運転時の制御について説明
する。外気温を検知する外気温検知器１２と、室外機５
と室内機６ａ，６ｂの接続配管長を検知する配管長検知
器１６と、リモコン１５ａ，１５ｂのＯＮ，ＯＦＦによ
り運転馬力数を検知する運転馬力数検知器１７と、外気
温検知器１２の出力と配管長検知器１６の出力と運転馬
力数検知器１７の出力とから例えば（表１）に示したよ
うに設定圧力を検知する設定圧力検知器１８と、冷媒の
圧力を検知する圧力検知器１１と、圧力検知器１１と設
定圧力検知器１８の差を算出する圧力差算出器１９と、
圧力差算出器１９の出力に応じて操作量を決定する能力
制御決定手段２０とを備え、この能力制御決定手段２０
で決定した操作量で圧縮機１の回転数を操作するもので
ある。FIG. 7 is a control block diagram of a compressor of a conventional multi-room air conditioner. Control during a heating operation will be described. An outside air temperature detector 12 for detecting an outside air temperature, and an outdoor unit 5
A pipe length detector 16 for detecting a connection pipe length between the air conditioner and the indoor units 6a and 6b, an operation horsepower number detector 17 for detecting an operation horsepower number by turning on and off the remote controllers 15a and 15b, and an output of the outside air temperature detector 12 For example, as shown in (Table 1), a set pressure detector 18 for detecting a set pressure and a pressure detector for detecting the pressure of the refrigerant from the output of the pipe length detector 16 and the output of the operating horsepower detector 17 11, a pressure difference calculator 19 for calculating a difference between the pressure detector 11 and the set pressure detector 18,
Capacity control determining means 20 for determining an operation amount in accordance with the output of the pressure difference calculator 19;
The rotation speed of the compressor 1 is operated with the operation amount determined in the step (1).
【００１０】[0010]
【表１】 [Table 1]
【００１１】[0011]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、運転馬力数検知器１７で検知した運転馬力
数が同じ場合、室内負荷の大小に関わらず設定圧力検知
器１８の設定圧力が同じとなる。However, in the above-described conventional configuration, when the operating horsepower detected by the operating horsepower detector 17 is the same, the set pressure of the set pressure detector 18 is the same regardless of the magnitude of the indoor load. Become.
【００１２】そのため、設定圧力検知器１８で設定する
設定圧力を室内負荷が大きい場合を基準として決定した
場合、室内負荷が小さい場合その負荷より大きめの圧縮
機運転周波数で運転され、効率の悪い運転になるという
課題を有していた。Therefore, when the set pressure set by the set pressure detector 18 is determined based on the case where the indoor load is large, when the indoor load is small, the compressor is operated at a higher compressor operating frequency than the load, resulting in inefficient operation. Had the problem of becoming
【００１３】また、設定圧力を負荷が小さい場合を基準
として決定した場合、室内負荷が大きい場合その負荷よ
り小さい圧縮機運転周波数で運転され、能力が小さく所
望の設定温度に達しないという課題を有していた。Further, when the set pressure is determined based on the case where the load is small, when the indoor load is large, the compressor is operated at a compressor operating frequency smaller than the load, and the capacity is small and the desired set temperature is not reached. Was.
【００１４】本発明は上記課題に鑑みなされたもので、
安価な方法で、室内の負荷状態に応じて効率の良く、快
適性の良い運転状態で運転できる多室型空気調和機を提
供するものである。The present invention has been made in view of the above problems,
It is an object of the present invention to provide a multi-room air conditioner that can be operated in an inexpensive manner in an efficient and comfortable operation state according to the indoor load condition.
【００１５】[0015]
【課題を解決するための手段】この目的を達成するため
本発明の多室型空気調和機は、圧縮機，四方弁，室外側
熱交換器，室外側膨張弁から成る室外機と、室内側膨張
弁，室内側熱交換器から成る複数の室内機とをガス管及
び液管を介して環状に接続し、前記圧縮機の吐出側の冷
媒圧力を検知する吐出圧力センサーと、前記圧縮機の吸
入側の冷媒圧力を検知する吸入圧力センサーと、前記圧
縮機の運転周波数を検知する運転周波数検知器と、前記
運転周波数検知器で検知した運転周波数によって設定圧
力を決定する設定圧力決定手段と、前記吸入圧力センサ
ーの検知圧力または前記吐出圧力センサーの検知圧力を
前記設定圧力決定手段で決定した設定圧力に一致させる
ために前記圧縮機の運転周波数の操作量を決定する圧縮
機操作量決定手段と、前記設定圧力決定手段で決定した
各設定圧力における上限周波数または下限周波数を越え
た場合に上限周波数または下限周波数で待機する待機制
御手段と、前記待機手段でない場合前記設定圧力決定手
段で決定した各設定圧力における上限周波数または下限
周波数を限度として前記圧縮機操作量決定手段で決定し
た前記圧縮機の運転周波数に変更する第１の圧縮機制御
手段と、前記待機制御手段において前記圧縮機操作量決
定手段で決定された操作量が予め決めておいた操作量を
越えた場合に前記圧縮機操作量決定手段で決定した前記
圧縮機の運転周波数に変更する第２の圧縮機制御手段を
設け、冷媒として非共沸混合物を用いた構成となってい
る。In order to achieve this object, a multi-room air conditioner according to the present invention comprises an outdoor unit comprising a compressor, a four-way valve, an outdoor heat exchanger, and an outdoor expansion valve; A plurality of indoor units comprising an expansion valve and an indoor heat exchanger connected in a ring via a gas pipe and a liquid pipe, and a discharge pressure sensor for detecting a refrigerant pressure on a discharge side of the compressor; A suction pressure sensor that detects a refrigerant pressure on a suction side, an operation frequency detector that detects an operation frequency of the compressor, and a set pressure determination unit that determines a set pressure based on an operation frequency detected by the operation frequency detector, Compressor operation amount determining means for determining an operation amount of an operating frequency of the compressor so that a detection pressure of the suction pressure sensor or a detection pressure of the discharge pressure sensor coincides with the set pressure determined by the set pressure determination means. A standby control unit that waits at an upper limit frequency or a lower limit frequency when an upper limit frequency or a lower limit frequency at each set pressure determined by the set pressure determining unit is exceeded, and each of the units determined by the set pressure determining unit when not the standby unit. First compressor control means for changing the operation frequency of the compressor determined by the compressor operation amount determination means to a limit of an upper limit frequency or a lower limit frequency at a set pressure, and the compressor control amount determination in the standby control means A second compressor control means for changing the operating frequency of the compressor determined by the compressor operation amount determining means when the operation amount determined by the means exceeds a predetermined operation amount; Is a configuration using a non-azeotropic mixture.
【００１６】これにより、安価な方法で、室内の負荷状
態に応じて、最適な蒸発温度または凝縮温度で運転する
ことができ、最適な圧縮機の回転数で運転できるととも
に、設定圧力における上限または下限周波数で一時待機
させることにより、設定圧力が変更することによるサイ
クルおよび室温のハンチングが防止され、快適性が向上
し、効率の良い運転となる。また、操作量を検知して、
設定圧力変更を行うので、室内負荷変動に対する追従性
がよくなり所望の空調空間を速く実現できる。[0016] According to this, it is possible to operate at an optimum evaporating temperature or condensing temperature in an inexpensive manner according to the load condition in the room, to operate at an optimum compressor speed, and to set an upper limit or a set pressure. By temporarily waiting at the lower limit frequency, cycling due to a change in the set pressure and hunting at room temperature are prevented, comfort is improved, and efficient operation is achieved. Also, by detecting the operation amount,
Since the set pressure is changed, the responsiveness to indoor load fluctuation is improved, and a desired air-conditioned space can be realized quickly.
【００１７】また、圧縮機，四方弁，室外側熱交換器，
室外側膨張弁から成る室外機と、室内側膨張弁，室内側
熱交換器から成る複数の室内機とをガス管及び液管を介
して環状に接続し、前記圧縮機の吐出側の冷媒圧力を検
知する吐出圧力センサーと、前記圧縮機の吸入側の冷媒
圧力を検知する吸入圧力センサーと、前記圧縮機の運転
周波数を検知する運転周波数検知器と、前記運転周波数
検知器で検知した運転周波数によって設定圧力を決定す
る設定圧力決定手段と、前記吸入圧力センサーの検知圧
力または前記吐出圧力センサーの検知圧力を前記設定圧
力決定手段で決定した設定圧力に一致させるために前記
圧縮機の運転周波数の操作量を決定する圧縮機操作量決
定手段と、前記設定圧力決定手段で決定した各設定圧力
における上限周波数または下限周波数を越えた場合に上
限周波数または下限周波数で待機する待機制御手段と、
前記待機制御手段で上限周波数または下限周波数で待機
している時間を検知する継続時間検知器と、前記待機手
段でない場合前記設定圧力決定手段で決定した各設定圧
力における上限周波数または下限周波数を限度として前
記圧縮機操作量決定手段で決定した前記圧縮機の運転周
波数に変更する第１の圧縮機制御手段と、前記待機制御
手段において前記圧縮機操作量決定手段で決定された操
作量が予め決めておいた操作量を越えた場合に前記圧縮
機操作量決定手段で決定した前記圧縮機の運転周波数に
変更する第２の圧縮機制御手段と、前記待機制御手段に
おいて前記圧縮機操作量決定手段で決定された操作量が
予め決めておいた操作量を越えていない場合に前記継続
時間検知器で検知した時間が予め決定しておいた時間継
続した場合に前記圧縮機操作量決定手段で決定した前記
圧縮機の運転周波数に変更する第３の圧縮機制御手段を
設け、冷媒として非共沸混合物を用いた構成となってい
る。Also, a compressor, a four-way valve, an outdoor heat exchanger,
An outdoor unit comprising an outdoor expansion valve and a plurality of indoor units comprising an indoor expansion valve and an indoor heat exchanger are connected in a ring via a gas pipe and a liquid pipe, and a refrigerant pressure on a discharge side of the compressor is provided. , A suction pressure sensor for detecting a refrigerant pressure on the suction side of the compressor, an operation frequency detector for detecting an operation frequency of the compressor, and an operation frequency detected by the operation frequency detector. A set pressure determining means for determining a set pressure by the operating pressure of the compressor in order to match a detected pressure of the suction pressure sensor or a detected pressure of the discharge pressure sensor with the set pressure determined by the set pressure determining means. A compressor operation amount determining means for determining an operation amount, and an upper limit frequency or a lower limit when exceeding an upper limit frequency or a lower limit frequency at each set pressure determined by the set pressure determining means. And standby control means for waiting in frequency,
A duration detector for detecting the time of standby at the upper limit frequency or lower limit frequency in the standby control means, and the upper limit frequency or lower limit frequency at each set pressure determined by the set pressure determination means when not the standby means. First compressor control means for changing to the operating frequency of the compressor determined by the compressor operation amount determination means, and the operation amount determined by the compressor operation amount determination means in the standby control means is determined in advance. A second compressor control means for changing to an operation frequency of the compressor determined by the compressor operation amount determination means when the operation amount exceeds the set operation amount, and the compressor operation amount determination means in the standby control means. If the determined operation amount does not exceed a predetermined operation amount, the time detected by the duration detector continues for a predetermined time. Providing the third compressor control means for changing the operation frequency of the compressor determined by compressor operation amount determining means, it has a configuration using a non-azeotropic mixture as refrigerant.
【００１８】これにより、安価な方法で、室内の負荷状
態に応じて、最適な蒸発温度または凝縮温度で運転する
ことができ、最適な圧縮機の回転数で運転できるととも
に、設定圧力における上限または下限周波数で一時待機
させることにより、設定圧力が変更することによるサイ
クルおよび室温のハンチングが防止され、快適性が向上
し、効率の良い運転となる。また、操作量を検知して、
設定圧力変更を行うので、室内負荷変動に対する追従性
がよくなり所望の空調空間を速く実現できる。[0018] With this, it is possible to operate at an optimum evaporation temperature or condensing temperature in an inexpensive manner in accordance with the load condition in the room, to operate at an optimum compressor speed, and to set an upper limit or a set pressure. By temporarily waiting at the lower limit frequency, cycling due to a change in the set pressure and hunting at room temperature are prevented, comfort is improved, and efficient operation is achieved. Also, by detecting the operation amount,
Since the set pressure is changed, the responsiveness to indoor load fluctuation is improved, and a desired air-conditioned space can be realized quickly.
【００１９】また、待機制御の継続時間を検知して、設
定圧力変更を行うので、室内負荷変動に対する追従性が
さらによくなり所望の空調空間を速く実現できるととも
に、さらに効率の良い運転となる。Further, since the set pressure is changed by detecting the continuation time of the standby control, the follow-up performance with respect to the variation in the indoor load is further improved, and a desired air-conditioned space can be realized quickly, and the operation becomes more efficient.
【００２０】[0020]
【発明の実施の形態】本発明の請求項１に記載の発明
は、圧縮機，四方弁，室外側熱交換器，室外側膨張弁か
ら成る室外機と、室内側膨張弁，室内側熱交換器から成
る複数の室内機とをガス管及び液管を介して環状に接続
し、前記圧縮機の吐出側の冷媒圧力を検知する吐出圧力
センサーと、前記圧縮機の吸入側の冷媒圧力を検知する
吸入圧力センサーと、前記圧縮機の運転周波数を検知す
る運転周波数検知器と、前記運転周波数検知器で検知し
た運転周波数によって設定圧力を決定する設定圧力決定
手段と、前記吸入圧力センサーの検知圧力または前記吐
出圧力センサーの検知圧力を前記設定圧力決定手段で決
定した設定圧力に一致させるために前記圧縮機の運転周
波数の操作量を決定する圧縮機操作量決定手段と、前記
設定圧力決定手段で決定した各設定圧力における上限周
波数または下限周波数を越えた場合に上限周波数または
下限周波数で待機する待機制御手段と、前記待機手段で
ない場合前記設定圧力決定手段で決定した各設定圧力に
おける上限周波数または下限周波数を限度として前記圧
縮機操作量決定手段で決定した前記圧縮機の運転周波数
に変更する第１の圧縮機制御手段と、前記待機制御手段
において前記圧縮機操作量決定手段で決定された操作量
が予め決めておいた操作量を越えた場合に前記圧縮機操
作量決定手段で決定した前記圧縮機の運転周波数に変更
する第２の圧縮機制御手段を設け、冷媒として非共沸混
合物を用いた構成のものであり、室内の負荷状態に応じ
て、最適な蒸発温度または凝縮温度で運転することがで
き、最適な圧縮機の回転数で運転できるとともに、設定
圧力における上限または下限周波数で一時待機させるこ
とにより、設定圧力が変更することによるサイクルおよ
び室温のハンチングが防止され、快適性が向上し、効率
の良い運転となる。また、操作量を検知して、設定圧力
変更を行うので、室内負荷変動に対する追従性がよくな
り所望の空調空間を速く実現できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to a first aspect of the present invention is directed to an outdoor unit including a compressor, a four-way valve, an outdoor heat exchanger, and an outdoor expansion valve, an indoor expansion valve, and an indoor heat exchange. A plurality of indoor units each including a compressor are connected in a ring via a gas pipe and a liquid pipe, and a discharge pressure sensor for detecting a refrigerant pressure on a discharge side of the compressor and a refrigerant pressure on a suction side of the compressor are detected. Suction pressure sensor, an operating frequency detector for detecting an operating frequency of the compressor, a set pressure determining means for determining a set pressure based on an operating frequency detected by the operating frequency detector, and a detected pressure of the suction pressure sensor. Or a compressor operation amount determining means for determining an operation amount of an operating frequency of the compressor so as to match a detection pressure of the discharge pressure sensor with a set pressure determined by the set pressure determination means; and A standby control unit that waits at an upper limit frequency or a lower limit frequency when the upper limit frequency or the lower limit frequency at each set pressure is exceeded, and an upper limit frequency or a lower limit at each set pressure determined by the set pressure determining unit when the unit is not the standby unit. First compressor control means for changing the operating frequency of the compressor determined by the compressor operation amount determination means to a frequency limit, and an operation amount determined by the compressor operation amount determination means in the standby control means A second compressor control means for changing to an operation frequency of the compressor determined by the compressor operation amount determination means when the operation amount exceeds a predetermined operation amount, wherein a non-azeotropic mixture is used as a refrigerant. It can be operated at the optimal evaporating temperature or condensing temperature according to the indoor load condition, and can be operated at the optimal compressor speed. Together, by temporarily waits at the upper or lower limit frequency in the set pressure, it is prevented cycle and room temperature hunting by changing the set pressure, improved comfort, and efficient operation. Further, since the set pressure is changed by detecting the operation amount, the followability to the variation in the indoor load is improved, and a desired air-conditioned space can be realized quickly.
【００２１】また、請求項２に記載の発明は、圧縮機，
四方弁，室外側熱交換器，室外側膨張弁から成る室外機
と、室内側膨張弁，室内側熱交換器から成る複数の室内
機とをガス管及び液管を介して環状に接続し、前記圧縮
機の吐出側の冷媒圧力を検知する吐出圧力センサーと、
前記圧縮機の吸入側の冷媒圧力を検知する吸入圧力セン
サーと、前記圧縮機の運転周波数を検知する運転周波数
検知器と、前記運転周波数検知器で検知した運転周波数
によって設定圧力を決定する設定圧力決定手段と、前記
吸入圧力センサーの検知圧力または前記吐出圧力センサ
ーの検知圧力を前記設定圧力決定手段で決定した設定圧
力に一致させるために前記圧縮機の運転周波数の操作量
を決定する圧縮機操作量決定手段と、前記設定圧力決定
手段で決定した各設定圧力における上限周波数または下
限周波数を越えた場合に上限周波数または下限周波数で
待機する待機制御手段と、前記待機制御手段で上限周波
数または下限周波数で待機している時間を検知する継続
時間検知器と、前記待機手段でない場合前記設定圧力決
定手段で決定した各設定圧力における上限周波数または
下限周波数を限度として前記圧縮機操作量決定手段で決
定した前記圧縮機の運転周波数に変更する第１の圧縮機
制御手段と、前記待機制御手段において前記圧縮機操作
量決定手段で決定された操作量が予め決めておいた操作
量を越えた場合に前記圧縮機操作量決定手段で決定した
前記圧縮機の運転周波数に変更する第２の圧縮機制御手
段と、前記待機制御手段において前記圧縮機操作量決定
手段で決定された操作量が予め決めておいた操作量を越
えていない場合に前記継続時間検知器で検知した時間が
予め決定しておいた時間継続した場合に前記圧縮機操作
量決定手段で決定した前記圧縮機の運転周波数に変更す
る第３の圧縮機制御手段を設け、冷媒として非共沸混合
物を用いた構成のものであり、室内の負荷状態に応じ
て、最適な蒸発温度または凝縮温度で運転することがで
き、最適な圧縮機の回転数で運転できるとともに、設定
圧力における上限または下限周波数で一時待機させるこ
とにより、設定圧力が変更することによるサイクルおよ
び室温のハンチングが防止され、快適性が向上し、効率
の良い運転となる。また、操作量を検知して、設定圧力
変更を行うので、室内負荷変動に対する追従性がよくな
り所望の空調空間を速く実現できる。また、待機制御の
継続時間を検知して、設定圧力変更を行うので、室内負
荷変動に対する追従性がさらによくなり所望の空調空間
を速く実現できるとともに、さらに効率の良い運転とな
る。The invention according to claim 2 is a compressor,
An outdoor unit comprising a four-way valve, an outdoor heat exchanger and an outdoor expansion valve, and a plurality of indoor units comprising an indoor expansion valve and an indoor heat exchanger connected in a ring via a gas pipe and a liquid pipe; A discharge pressure sensor for detecting a refrigerant pressure on a discharge side of the compressor,
A suction pressure sensor that detects a refrigerant pressure on a suction side of the compressor, an operation frequency detector that detects an operation frequency of the compressor, and a set pressure that determines a set pressure based on an operation frequency detected by the operation frequency detector. Determining means, and a compressor operation for determining an operation amount of an operating frequency of the compressor in order to match a detected pressure of the suction pressure sensor or a detected pressure of the discharge pressure sensor with the set pressure determined by the set pressure determining means. Quantity determining means, standby control means for waiting at an upper limit frequency or lower limit frequency when exceeding an upper limit frequency or lower limit frequency at each set pressure determined by the set pressure determining means, and an upper limit frequency or lower limit frequency in the standby control means And a duration detector for detecting the waiting time, and when not the waiting means, determined by the set pressure determining means. First compressor control means for changing the operation frequency of the compressor determined by the compressor operation amount determination means to a limit of an upper limit frequency or a lower limit frequency at a set pressure, and the compressor control amount determination in the standby control means Second compressor control means for changing to the operating frequency of the compressor determined by the compressor operation amount determination means when the operation amount determined by the means exceeds a predetermined operation amount; When the operation amount determined by the compressor operation amount determination means in the control means does not exceed a predetermined operation amount, the time detected by the duration detector continues for a predetermined time. Provided with a third compressor control means for changing the operating frequency of the compressor determined by the compressor operation amount determination means, using a non-azeotropic mixture as a refrigerant, indoors Depending on the load condition, it can be operated at the optimal evaporating temperature or condensing temperature, can be operated at the optimal compressor speed, and can temporarily change to the set pressure at the upper or lower limit frequency to change the set pressure This prevents cycle and room temperature hunting, improves comfort and results in efficient operation. Further, since the set pressure is changed by detecting the operation amount, the followability to the variation in the indoor load is improved, and a desired air-conditioned space can be realized quickly. In addition, since the set pressure is changed by detecting the duration of the standby control, the follow-up performance with respect to the change in the indoor load is further improved, and a desired air-conditioned space can be realized quickly, and the operation is more efficient.
【００２２】[0022]
【実施例】以上のように構成された多室型空気調和機の
実施例について、図１から図９を用いて説明する。尚、
従来と同一構成については同一符号を付し、その詳細な
説明を省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-room air conditioner configured as described above will be described with reference to FIGS. still,
The same components as those in the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.
【００２３】（実施例１）図１は本発明の実施例１にお
ける多室型空気調和機の冷媒サイクル図を示している。
図１において、２１は吐出圧力センサー、２２は吸入圧
力センサーであり、室外機２３に備えられている。従来
と同一の動作のため、詳細な説明を省略する。Embodiment 1 FIG. 1 shows a refrigerant cycle diagram of a multi-room air conditioner according to Embodiment 1 of the present invention.
In FIG. 1, reference numeral 21 denotes a discharge pressure sensor, 22 denotes a suction pressure sensor, which are provided in an outdoor unit 23. Since the operation is the same as the conventional one, a detailed description is omitted.
【００２４】図２は本発明の実施例１における多室型空
気調和機の制御ブロック図である。図２に示すように実
施例の多室型空気調和機は、吐出圧力センサー２１、吸
入圧力センサー２２、運転周波数検知器２４を備えてい
る。FIG. 2 is a control block diagram of the multi-room air conditioner according to the first embodiment of the present invention. As shown in FIG. 2, the multi-room air conditioner of the embodiment includes a discharge pressure sensor 21, a suction pressure sensor 22, and an operating frequency detector 24.
【００２５】この運転周波数検知器２４で検知した運転
周波数によって設定圧力を決定する設定圧力決定手段２
５を有し、吸入圧力センサー２２の検知圧力または吐出
圧力センサー２１の検知圧力を設定圧力決定手段２５で
決定した設定圧力に一致させるために圧縮機１の運転周
波数の操作量を決定する圧縮機操作量決定手段２６を備
えている。Set pressure determining means 2 for determining a set pressure based on the operating frequency detected by operating frequency detector 24.
5 that determines the operation amount of the operating frequency of the compressor 1 so that the detected pressure of the suction pressure sensor 22 or the detected pressure of the discharge pressure sensor 21 matches the set pressure determined by the set pressure determining means 25. An operation amount determining means 26 is provided.
【００２６】そして、設定圧力決定手段２５で決定した
各設定圧力における上限周波数または下限周波数を越え
た場合に待機制御手段２７にて上限周波数または下限周
波数で待機する。When the upper limit frequency or the lower limit frequency at each set pressure determined by the set pressure determining means 25 is exceeded, the standby control means 27 stands by at the upper limit frequency or the lower limit frequency.
【００２７】また、この待機制御手段２７でない場合設
定圧力決定手段２５で決定した各設定圧力における上限
周波数または下限周波数を限度として圧縮機操作量決定
手段２６で決定した圧縮機１の運転周波数に変更する第
１の圧縮機制御手段２８と、待機制御手段２７において
圧縮機操作量決定手段２６で決定された操作量が予め決
めておいた操作量を越えた場合に圧縮機操作量決定手段
２６で決定した圧縮機１の運転周波数に変更する第２の
圧縮機制御手段２９を備えており、設定圧力決定手段２
５と、圧縮機操作量決定手段２６と、待機制御手段２７
と、第１の圧縮機制御手段２８と、第２の圧縮機制御手
段２９は制御装置３０に収納されている。When the standby control means 27 is not used, the operating frequency of the compressor 1 is changed to the operating frequency of the compressor 1 determined by the compressor operation amount determining means 26 with the upper limit frequency or the lower limit frequency at each set pressure determined by the set pressure determining means 25 as a limit. When the operation amount determined by the compressor operation amount determination unit 26 in the first compressor control unit 28 and the standby control unit 27 exceeds a predetermined operation amount, the compressor operation amount determination unit 26 A second compressor control means 29 for changing to the determined operating frequency of the compressor 1 is provided.
5, compressor operation amount determination means 26, standby control means 27
The first compressor control means 28 and the second compressor control means 29 are housed in a control device 30.
【００２８】以上のように構成された多室型空気調和機
について、動作の説明を行うこととする。尚、従来と同
一の動作については、詳細な説明を省略する。The operation of the multi-room air conditioner configured as described above will be described. Note that the detailed description of the same operation as that in the related art is omitted.
【００２９】図３は本発明の実施例１における多室型空
気調和機のフローチャートである。図３より、ＳＴＥＰ
１では、運転周波数検知器２４で運転周波数を、冷房時
吸入圧力センサー２２で吸入圧力を、暖房時吐出圧力セ
ンサー２１で吐出圧力を検知し、ＳＴＥＰ２では、運転
周波数検知器２４で検知した運転周波数によって設定圧
力決定手段２５で冷房時は（表２）、暖房時は（表３）
に示すように設定圧力を決定する。FIG. 3 is a flowchart of the multi-room air conditioner according to the first embodiment of the present invention. From FIG. 3, STEP
1, the operating frequency is detected by the operating frequency detector 24, the suction pressure is detected by the cooling suction pressure sensor 22, and the discharge pressure is detected by the heating discharge pressure sensor 21. In STEP 2, the operating frequency detected by the operation frequency detector 24 is detected. The pressure is determined by the set pressure determining means 25 during cooling (Table 2) and during heating (Table 3).
The set pressure is determined as shown in FIG.
【００３０】[0030]
【表２】 [Table 2]
【００３１】[0031]
【表３】 [Table 3]
【００３２】ＳＴＥＰ３では、冷房時吸入圧力センサー
２２の検知圧力を、暖房時吐出圧力センサー２１の検知
圧力を、圧縮機操作量決定手段２６において、設定圧力
決定手段２５で決定した設定圧力に一致させるために圧
縮機１の運転周波数の操作量を決定する。In STEP 3, the detected pressure of the cooling-time suction pressure sensor 22 and the detected pressure of the heating-time discharge pressure sensor 21 are made to coincide with the set pressure determined by the set pressure determining means 25 in the compressor operation amount determining means 26. For this purpose, the operation amount of the operating frequency of the compressor 1 is determined.
【００３３】ＳＴＥＰ４では、待機制御手段２７におい
て各設定圧力における上限周波数または下限周波数で待
機中か判断し、待機中でない場合ＳＴＥＰ６で第１の圧
縮機制御手段２８により設定圧力決定手段２５で決定し
た各設定圧力における上限周波数または下限周波数を限
度として圧縮機操作量決定手段２６で決定した運転周波
数に変更する。In STEP 4, the standby control means 27 determines whether the apparatus is in standby at the upper limit frequency or the lower limit frequency at each set pressure, and when not in standby, the first compressor control means 28 determines in the set pressure determination means 25 in STEP 6. The operation frequency is changed to the operation frequency determined by the compressor operation amount determination means 26 with the upper limit frequency or the lower limit frequency at each set pressure as a limit.
【００３４】ＳＴＥＰ５では、待機中の場合、圧縮機操
作量決定手段２６で決定された操作量が予め決めておい
た操作量を越えた場合にＳＴＥＰ６で第２の圧縮機制御
手段２９により圧縮機操作量決定手段２６で決定した圧
縮機１の運転周波数に変更する。予め決定しておいた操
作量を越えていない場合、待機制御手段２７において各
設定圧力における上限周波数または下限周波数で待機す
る。In STEP 5, if the operation amount determined by the compressor operation amount determination means 26 exceeds the predetermined operation amount in the standby state, the compressor is controlled by the second compressor control means 29 in STEP 6. The operation frequency is changed to the operating frequency of the compressor 1 determined by the operation amount determining means 26. When the operation amount does not exceed the predetermined operation amount, the standby control unit 27 waits at the upper limit frequency or the lower limit frequency at each set pressure.
【００３５】この実施例１によれば、室内の負荷状態に
応じて、最適な蒸発温度または凝縮温度で運転すること
ができ、最適な圧縮機の回転数で運転できるとともに、
設定圧力における上限または下限周波数で一時待機させ
ることにより、設定圧力が変更することによるサイクル
および室温のハンチングが防止され、快適性が向上し、
効率の良い運転となる。また、操作量を検知して、設定
圧力変更を行うので、室内負荷変動に対する追従性がよ
くなり所望の空調空間を速く実現できる。According to the first embodiment, it is possible to operate at the optimum evaporation temperature or condensation temperature according to the load condition in the room, and to operate at the optimum compressor speed.
By temporarily suspending at the upper or lower frequency at the set pressure, cycling and room temperature hunting due to the change of the set pressure are prevented, and comfort is improved,
It will be an efficient operation. Further, since the set pressure is changed by detecting the operation amount, the followability to the variation in the indoor load is improved, and a desired air-conditioned space can be realized quickly.
【００３６】尚、非共沸混合冷媒として、例えば、ＨＦ
Ｃ系の混合冷媒である。Ｒ３２／１２５／１３４ａ（３
０／１０／６０ｗｔ％）やＲ３２／１２５／１３４ａ
（２３／２５／５２ｗｔ％）を使用できることは言うま
でもない。また、１台の室内機と１台の室外機を有する
空気調和機および複数の室内機と複数の室外機を有する
多室型空気調和機においても適応可能である。As the non-azeotropic refrigerant, for example, HF
It is a C-based mixed refrigerant. R32 / 125 / 134a (3
0/10 / 60wt%) or R32 / 125 / 134a
It goes without saying that (23/25/52 wt%) can be used. The present invention is also applicable to an air conditioner having one indoor unit and one outdoor unit, and a multi-room air conditioner having a plurality of indoor units and a plurality of outdoor units.
【００３７】（実施例２）図４は本発明の実施例２にお
ける多室型空気調和機の制御ブロック図である。図４に
示すように実施例の多室型空気調和機は、吐出圧力セン
サー２１、吸入圧力センサー２２、運転周波数検知器２
４と、運転周波数検知器２４で検知した運転周波数によ
って設定圧力を決定する設定圧力決定手段２５と、吸入
圧力センサー２２の検知圧力または吐出圧力センサー２
１の検知圧力を設定圧力決定手段２５で決定した設定圧
力に一致させるために圧縮機１の運転周波数の操作量を
決定する圧縮機操作量決定手段２６と、設定圧力決定手
段２５で決定した各設定圧力における上限周波数または
下限周波数を越えた場合に上限周波数または下限周波数
で待機する待機制御手段２７と、待機制御手段２７で上
限周波数または下限周波数で待機している時間を検知す
る継続時間検知器３１と、待機制御手段２７でない場合
設定圧力決定手段２５で決定した各設定圧力における上
限周波数または下限周波数を限度として圧縮機操作量決
定手段２６で決定した圧縮機１の運転周波数に変更する
第１の圧縮機制御手段２８と、待機制御手段２７におい
て圧縮機操作量決定手段２６で決定された操作量が予め
決めておいた操作量を越えた場合に圧縮機操作量決定手
段２６で決定した圧縮機１の運転周波数に変更する第２
の圧縮機制御手段２９と、待機制御手段２７において圧
縮機操作量決定手段２６で決定された操作量が予め決め
ておいた操作量を越えていない場合に継続時間検知器２
９で検知した時間が予め決定しておいた時間継続した場
合に圧縮機操作量決定手段２６で決定した圧縮機１の運
転周波数に変更する第３の圧縮機制御手段３２とを備え
ており、設定圧力決定手段２５と、圧縮機操作量決定手
段２６と、待機制御手段２７と、第１の圧縮機制御手段
２８と、第２の圧縮機制御手段２９と、第３の圧縮機制
御手段３２は制御装置３３に収納されている。Embodiment 2 FIG. 4 is a control block diagram of a multi-room air conditioner according to Embodiment 2 of the present invention. As shown in FIG. 4, the multi-chamber air conditioner of the embodiment includes a discharge pressure sensor 21, a suction pressure sensor 22, an operation frequency detector 2
4, a set pressure determining means 25 for determining a set pressure based on the operating frequency detected by the operating frequency detector 24, and a detected pressure of the suction pressure sensor 22 or a discharge pressure sensor 2
1 to determine the operation amount of the operating frequency of the compressor 1 in order to make the detected pressure of the pressure 1 coincide with the set pressure determined by the set pressure determination means 25, and each of the compressor operation amount determined by the set pressure determination means 25. Standby control means 27 that stands by at the upper limit frequency or lower limit frequency when the upper limit frequency or lower limit frequency at the set pressure is exceeded, and a duration detector that detects the time that the standby control means 27 stands by at the upper limit frequency or lower limit frequency. 31 and, when the standby control means 27 is not used, the operating frequency of the compressor 1 is changed to the operating frequency of the compressor 1 determined by the compressor operation amount determining means 26 with the upper limit frequency or the lower limit frequency at each set pressure determined by the set pressure determining means 25 as a limit. The operation amount determined by the compressor operation amount determination unit 26 in the compressor control unit 28 and the standby control unit 27 The change in operation frequency of the compressor 1 determined by the compressor operation amount determination unit 26 when exceeding the 2
If the operation amount determined by the compressor operation amount determination means 26 in the compressor control means 29 and the standby control means 27 does not exceed the predetermined operation amount, the duration detector 2
And third compressor control means 32 for changing the operating frequency of the compressor 1 determined by the compressor operation amount determination means 26 when the time detected at 9 has continued for a predetermined time, Set pressure determination means 25, compressor operation amount determination means 26, standby control means 27, first compressor control means 28, second compressor control means 29, and third compressor control means 32 Are stored in the control device 33.
【００３８】図５は本発明の実施例２における多室型空
気調和機のフローチャートである。図５より、ＳＴＥＰ
１では、運転周波数検知器２４で運転周波数を、冷房時
吸入圧力センサー２２で吸入圧力を、暖房時吐出圧力セ
ンサー２１で吐出圧力を検知し、ＳＴＥＰ２では、運転
周波数検知器２４で検知した運転周波数によって設定圧
力決定手段２５で冷房時は（表２）、暖房時は（表３）
に示すように設定圧力を決定する。FIG. 5 is a flowchart of the multi-room air conditioner according to the second embodiment of the present invention. From FIG. 5, STEP
1, the operating frequency is detected by the operating frequency detector 24, the suction pressure is detected by the cooling suction pressure sensor 22, and the discharge pressure is detected by the heating discharge pressure sensor 21. In STEP 2, the operating frequency detected by the operation frequency detector 24 is detected. The pressure is determined by the set pressure determining means 25 during cooling (Table 2) and during heating (Table 3).
The set pressure is determined as shown in FIG.
【００３９】ＳＴＥＰ３では、冷房時吸入圧力センサー
２２の検知圧力を、暖房時吐出圧力センサー２１の検知
圧力を、圧縮機操作量決定手段２６において、設定圧力
決定手段２５で決定した設定圧力に一致させるために圧
縮機１の運転周波数の操作量を決定する。In STEP 3, the detected pressure of the cooling-time suction pressure sensor 22 and the detected pressure of the heating-time discharge pressure sensor 21 are made to coincide with the set pressure determined by the set pressure determining means 25 in the compressor operation amount determining means 26. For this purpose, the operation amount of the operating frequency of the compressor 1 is determined.
【００４０】ＳＴＥＰ４では、待機制御手段２７におい
て各設定圧力における上限周波数または下限周波数で待
機中か判断し、待機中でない場合ＳＴＥＰ７で第１の圧
縮機制御手段２８により設定圧力決定手段２５で決定し
た各設定圧力における上限周波数または下限周波数を限
度として圧縮機操作量決定手段２６で決定した運転周波
数に変更する。In STEP 4, the standby control means 27 determines whether the apparatus is in standby at the upper limit frequency or the lower limit frequency at each set pressure, and when not in standby, the first compressor control means 28 determines the set pressure in the set pressure determination means 25 in STEP 7. The operation frequency is changed to the operation frequency determined by the compressor operation amount determination means 26 with the upper limit frequency or the lower limit frequency at each set pressure as a limit.
【００４１】ＳＴＥＰ５では、待機中の場合、圧縮機操
作量決定手段２６で決定された操作量が予め決めておい
た操作量を越えた場合にＳＴＥＰ７で第２の圧縮機制御
手段２９により圧縮機操作量決定手段２６で決定した圧
縮機１の運転周波数に変更する。In STEP 5, if the operation amount determined by the compressor operation amount determination means 26 exceeds the predetermined operation amount in the standby state, the compressor is controlled by the second compressor control means 29 in STEP 7 in STEP 7. The operation frequency is changed to the operating frequency of the compressor 1 determined by the operation amount determining means 26.
【００４２】ＳＴＥＰ６では、待機中で、圧縮機操作量
決定手段２６で決定された操作量が予め決めておいた操
作量を越えていない場合、継続時間検知器３１で継続時
間を検出し、予め決定しておいた時間例えば５分間継続
した場合、ＳＴＥＰ７で第３の圧縮機制御手段３２によ
り圧縮機操作量決定手段２６で決定した圧縮機１の運転
周波数に変更する。予め決定しておいた時間例えば５分
間継続していない場合、待機制御手段２７において各設
定圧力における上限周波数または下限周波数で待機す
る。In STEP 6, if the operation amount determined by the compressor operation amount determination means 26 does not exceed the predetermined operation amount during standby, the duration time is detected by the duration detector 31 and If the determined time continues, for example, 5 minutes, the operating frequency of the compressor 1 is changed by the third compressor control means 32 to the operating frequency of the compressor 1 determined by the compressor operation amount determining means 26 in STEP 7. If the predetermined time, for example, five minutes has not elapsed, the standby control means 27 waits at the upper limit frequency or the lower limit frequency at each set pressure.
【００４３】この実施例２によれば、室内の負荷状態に
応じて、最適な蒸発温度または凝縮温度で運転すること
ができ、最適な圧縮機の回転数で運転できるとともに、
設定圧力における上限または下限周波数で一時待機させ
ることにより、設定圧力が変更することによるサイクル
および室温のハンチングが防止され、快適性が向上し、
効率の良い運転となる。また、操作量を検知して、設定
圧力変更を行うので、室内負荷変動に対する追従性がよ
くなり所望の空調空間を速く実現できる。また、待機制
御の継続時間を検知して、設定圧力変更を行うので、室
内負荷状態に対する追従性がさらによくなり所望の空調
空間を速く実現できるとともに、さらに効率の良い運転
となる。According to the second embodiment, the operation can be performed at the optimum evaporation temperature or the condensation temperature according to the load condition in the room, and the operation can be performed at the optimum rotation speed of the compressor.
By temporarily suspending at the upper or lower frequency at the set pressure, cycling and room temperature hunting due to the change of the set pressure are prevented, and comfort is improved,
It will be an efficient operation. Further, since the set pressure is changed by detecting the operation amount, the followability to the variation in the indoor load is improved, and a desired air-conditioned space can be realized quickly. Further, since the set pressure is changed by detecting the continuation time of the standby control, the followability to the indoor load condition is further improved, and a desired air-conditioned space can be quickly realized, and the operation becomes more efficient.
【００４４】尚、非共沸混合冷媒として、例えば、ＨＦ
Ｃ系の混合冷媒である。Ｒ３２／１２５／１３４ａ（３
０／１０／６０ｗｔ％）やＲ３２／１２５／１３４ａ
（２３／２５／５２ｗｔ％）を使用できることは言うま
でもない。また、１台の室内機と１台の室外機を有する
空気調和機および複数の室内機と複数の室外機を有する
多室型空気調和機においても適応可能である。As the non-azeotropic mixed refrigerant, for example, HF
It is a C-based mixed refrigerant. R32 / 125 / 134a (3
0/10 / 60wt%) or R32 / 125 / 134a
It goes without saying that (23/25/52 wt%) can be used. The present invention is also applicable to an air conditioner having one indoor unit and one outdoor unit, and a multi-room air conditioner having a plurality of indoor units and a plurality of outdoor units.
【００４５】[0045]
【発明の効果】以上のように本発明によれば、室内の負
荷状態に応じて、最適な蒸発温度または凝縮温度で運転
することができ、最適な圧縮機の回転数で運転できると
ともに、設定圧力における上限または下限周波数で一時
待機させることにより、設定圧力が変更することによる
サイクルおよび室温のハンチングが防止され、快適性が
向上し、効率の良い運転となる。また、操作量を検知し
て、設定圧力変更を行うので、室内負荷変動に対する追
従性がよくなり所望の空調空間を速く実現できる。As described above, according to the present invention, it is possible to operate at the optimum evaporation temperature or condensation temperature according to the indoor load condition, to operate at the optimum compressor speed, and to set the compressor temperature. By temporarily waiting at the upper or lower frequency limit of the pressure, cycling due to a change in the set pressure and hunting at room temperature are prevented, comfort is improved, and efficient operation is achieved. Further, since the set pressure is changed by detecting the operation amount, the followability to the variation in the indoor load is improved, and a desired air-conditioned space can be realized quickly.
【００４６】また、待機制御の継続時間を検知して、設
定圧力変更を行うので、室内負荷変動に対する追従性が
さらによくなり所望の空調空間を速く実現できるととも
に、さらに効率の良い運転となる。Further, since the set pressure is changed by detecting the duration of the standby control, the follow-up performance with respect to the change in the indoor load is further improved, and a desired air-conditioned space can be realized quickly, and the operation becomes more efficient.
【図１】本発明の実施例１における多室型空気調和機の
冷凍サイクル図FIG. 1 is a refrigeration cycle diagram of a multi-room air conditioner according to a first embodiment of the present invention.
【図２】同実施例の多室型空気調和機のブロック図FIG. 2 is a block diagram of the multi-room air conditioner of the embodiment.
【図３】同実施例の多室型空気調和機の室外側膨張弁の
制御フローチャートFIG. 3 is a control flowchart of an outdoor expansion valve of the multi-room air conditioner of the embodiment.
【図４】本発明の実施例２における多室型空気調和機の
ブロック図FIG. 4 is a block diagram of a multi-room air conditioner according to a second embodiment of the present invention.
【図５】同実施例の多室型空気調和機の室外側膨張弁の
制御フローチャートFIG. 5 is a control flowchart of an outdoor expansion valve of the multi-room air conditioner of the embodiment.
【図６】従来の多室型空気調和機の冷凍サイクル図FIG. 6 is a refrigeration cycle diagram of a conventional multi-room air conditioner.
【図７】従来の多室型空気調和機の圧縮機の制御ブロッ
ク図FIG. 7 is a control block diagram of a compressor of a conventional multi-room air conditioner.
１ 圧縮機 ２ 四方弁 ３ 室外側熱交換器 ４ 室外側膨張弁 ６ 室内機 ７ 室内側膨張弁 ８ 室内側熱交換器 ９ 液管 １０ ガス管 ２１ 吐出圧力センサー ２２ 吸入圧力センサー ２５ 室外機 REFERENCE SIGNS LIST 1 compressor 2 four-way valve 3 outdoor heat exchanger 4 outdoor expansion valve 6 indoor unit 7 indoor expansion valve 8 indoor heat exchanger 9 liquid pipe 10 gas pipe 21 discharge pressure sensor 22 suction pressure sensor 25 outdoor unit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ２５Ｂ 1/00 ３７１ Ｆ２５Ｂ 1/00 ３７１Ｃ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI F25B 1/00 371 F25B 1/00 371C
Claims (2)
側膨張弁から成る室外機と、室内側膨張弁，室内側熱交
換器から成る複数の室内機とをガス管及び液管を介して
環状に接続し、前記圧縮機の吐出側の冷媒圧力を検知す
る吐出圧力センサーと、前記圧縮機の吸入側の冷媒圧力
を検知する吸入圧力センサーと、前記圧縮機の運転周波
数を検知する運転周波数検知器と、前記運転周波数検知
器で検知した運転周波数によって設定圧力を決定する設
定圧力決定手段と、前記吸入圧力センサーの検知圧力ま
たは前記吐出圧力センサーの検知圧力を前記設定圧力決
定手段で決定した設定圧力に一致させるために前記圧縮
機の運転周波数の操作量を決定する圧縮機操作量決定手
段と、前記設定圧力決定手段で決定した各設定圧力にお
ける上限周波数または下限周波数を越えた場合に上限周
波数または下限周波数で待機する待機制御手段と、前記
待機手段でない場合前記設定圧力決定手段で決定した各
設定圧力における上限周波数または下限周波数を限度と
して前記圧縮機操作量決定手段で決定した前記圧縮機の
運転周波数に変更する第１の圧縮機制御手段と、前記待
機制御手段において前記圧縮機操作量決定手段で決定さ
れた操作量が予め決めておいた操作量を越えた場合に前
記圧縮機操作量決定手段で決定した前記圧縮機の運転周
波数に変更する第２の圧縮機制御手段を設け、冷媒とし
て非共沸混合物を用いた多室型空気調和機。An outdoor unit comprising a compressor, a four-way valve, an outdoor heat exchanger and an outdoor expansion valve, and a plurality of indoor units comprising an indoor expansion valve and an indoor heat exchanger are connected to a gas pipe and a liquid pipe. A discharge pressure sensor that detects refrigerant pressure on the discharge side of the compressor, a suction pressure sensor that detects refrigerant pressure on the suction side of the compressor, and detects an operating frequency of the compressor. Operating frequency detector, setting pressure determining means for determining a setting pressure according to the operating frequency detected by the operating frequency detector, and setting pressure determining means for detecting the pressure detected by the suction pressure sensor or the pressure detected by the discharge pressure sensor. Compressor operating amount determining means for determining an operating amount of the operating frequency of the compressor to match the set pressure determined in the above, an upper limit frequency at each set pressure determined by the set pressure determining means or Is a standby control unit that waits at an upper limit frequency or a lower limit frequency when the lower limit frequency is exceeded, and when the compressor is not the standby unit, the compressor operation is performed with the upper limit frequency or the lower limit frequency at each set pressure determined by the set pressure determining unit as a limit. First compressor control means for changing the operating frequency of the compressor determined by the amount determination means, and an operation amount determined by the compressor operation amount determination means in the standby control means being predetermined. A multi-compartment air conditioner using a non-azeotropic mixture as a refrigerant, provided with second compressor control means for changing the operation frequency of the compressor determined by the compressor operation amount determination means when the pressure exceeds the compressor operation amount determination means.
側膨張弁から成る室外機と、室内側膨張弁，室内側熱交
換器から成る複数の室内機とをガス管及び液管を介して
環状に接続し、前記圧縮機の吐出側の冷媒圧力を検知す
る吐出圧力センサーと、前記圧縮機の吸入側の冷媒圧力
を検知する吸入圧力センサーと、前記圧縮機の運転周波
数を検知する運転周波数検知器と、前記運転周波数検知
器で検知した運転周波数によって設定圧力を決定する設
定圧力決定手段と、前記吸入圧力センサーの検知圧力ま
たは前記吐出圧力センサーの検知圧力を前記設定圧力決
定手段で決定した設定圧力に一致させるために前記圧縮
機の運転周波数の操作量を決定する圧縮機操作量決定手
段と、前記設定圧力決定手段で決定した各設定圧力にお
ける上限周波数または下限周波数を越えた場合に上限周
波数または下限周波数で待機する待機制御手段と、前記
待機制御手段で上限周波数または下限周波数で待機して
いる時間を検知する継続時間検知器と、前記待機手段で
ない場合前記設定圧力決定手段で決定した各設定圧力に
おける上限周波数または下限周波数を限度として前記圧
縮機操作量決定手段で決定した前記圧縮機の運転周波数
に変更する第１の圧縮機制御手段と、前記待機制御手段
において前記圧縮機操作量決定手段で決定された操作量
が予め決めておいた操作量を越えた場合に前記圧縮機操
作量決定手段で決定した前記圧縮機の運転周波数に変更
する第２の圧縮機制御手段と、前記待機制御手段におい
て前記圧縮機操作量決定手段で決定された操作量が予め
決めておいた操作量を越えていない場合に前記継続時間
検知器で検知した時間が予め決定しておいた時間継続し
た場合に前記圧縮機操作量決定手段で決定した前記圧縮
機の運転周波数に変更する第３の圧縮機制御手段を設
け、冷媒として非共沸混合物を用いた多室型空気調和
機。2. A gas pipe and a liquid pipe comprising an outdoor unit comprising a compressor, a four-way valve, an outdoor heat exchanger and an outdoor expansion valve, and a plurality of indoor units comprising an indoor expansion valve and an indoor heat exchanger. A discharge pressure sensor that detects refrigerant pressure on the discharge side of the compressor, a suction pressure sensor that detects refrigerant pressure on the suction side of the compressor, and detects an operating frequency of the compressor. Operating frequency detector, setting pressure determining means for determining a setting pressure according to the operating frequency detected by the operating frequency detector, and setting pressure determining means for detecting the pressure detected by the suction pressure sensor or the pressure detected by the discharge pressure sensor. Compressor operating amount determining means for determining an operating amount of the operating frequency of the compressor to match the set pressure determined in the above, an upper limit frequency at each set pressure determined by the set pressure determining means or Is a standby control unit that waits at an upper limit frequency or a lower limit frequency when the lower limit frequency is exceeded, a duration detector that detects a standby time at the upper limit frequency or the lower limit frequency by the standby control unit, and is not the standby unit. In the case, first compressor control means for changing the operating frequency of the compressor determined by the compressor operation amount determining means as a limit of the upper limit frequency or lower limit frequency at each set pressure determined by the set pressure determining means, When the operation amount determined by the compressor operation amount determination unit in the standby control unit exceeds a predetermined operation amount, the operation frequency of the compressor is changed to the operation frequency of the compressor determined by the compressor operation amount determination unit. And if the operation amount determined by the compressor operation amount determining means in the standby control means does not exceed the predetermined operation amount. And third compressor control means for changing the operating frequency of the compressor determined by the compressor operation amount determination means when the time detected by the duration detector continues for a predetermined time. A multi-room air conditioner using a non-azeotropic mixture as a refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10020595A JPH11218360A (en) | 1998-02-02 | 1998-02-02 | Multi-type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10020595A JPH11218360A (en) | 1998-02-02 | 1998-02-02 | Multi-type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11218360A true JPH11218360A (en) | 1999-08-10 |
Family
ID=12031629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10020595A Pending JPH11218360A (en) | 1998-02-02 | 1998-02-02 | Multi-type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11218360A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115923A (en) * | 2000-10-06 | 2002-04-19 | Mitsubishi Electric Corp | Freezing apparatus and control method therefor |
| JP2010210198A (en) * | 2009-03-12 | 2010-09-24 | Panasonic Corp | Method of controlling air conditioning device |
| CN104142007B (en) * | 2013-05-09 | 2017-04-12 | 三菱电机株式会社 | An air conditioner |
| JP2019168116A (en) * | 2018-03-22 | 2019-10-03 | 株式会社富士通ゼネラル | Air conditioner |
| CN112460770A (en) * | 2020-11-20 | 2021-03-09 | 珠海格力电器股份有限公司 | Multi-module unit and control method and device thereof, storage medium and processor |
-
1998
- 1998-02-02 JP JP10020595A patent/JPH11218360A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115923A (en) * | 2000-10-06 | 2002-04-19 | Mitsubishi Electric Corp | Freezing apparatus and control method therefor |
| JP2010210198A (en) * | 2009-03-12 | 2010-09-24 | Panasonic Corp | Method of controlling air conditioning device |
| CN104142007B (en) * | 2013-05-09 | 2017-04-12 | 三菱电机株式会社 | An air conditioner |
| JP2019168116A (en) * | 2018-03-22 | 2019-10-03 | 株式会社富士通ゼネラル | Air conditioner |
| CN112460770A (en) * | 2020-11-20 | 2021-03-09 | 珠海格力电器股份有限公司 | Multi-module unit and control method and device thereof, storage medium and processor |
| CN112460770B (en) * | 2020-11-20 | 2022-07-15 | 珠海格力电器股份有限公司 | Multi-module unit and control method and device thereof, storage medium and processor |
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