JP3304866B2 - Thermal storage type air conditioner - Google Patents
Thermal storage type air conditionerInfo
- Publication number
- JP3304866B2 JP3304866B2 JP03086098A JP3086098A JP3304866B2 JP 3304866 B2 JP3304866 B2 JP 3304866B2 JP 03086098 A JP03086098 A JP 03086098A JP 3086098 A JP3086098 A JP 3086098A JP 3304866 B2 JP3304866 B2 JP 3304866B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- heat storage
- outdoor
- heat exchanger
- heat
- 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 - Fee Related
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Description
【０００１】[0001]
【発明の属する技術分野】 本発明は蓄熱運転と蓄熱利
用空調運転を実施することで昼間の空気調和による電力
消費量の低減を実現する蓄熱式空気調和機およびその制
御方法に関わる。The present invention relates to a regenerative air conditioner that realizes a reduction in power consumption by daytime air conditioning by performing a heat storage operation and a heat storage air conditioning operation, and a control method thereof.
【０００２】[0002]
【従来の技術】 圧縮機、凝縮器、流量調整弁、蒸発器
を順に冷媒配管で接続し、冷媒配管の途中に蓄熱熱交換
器を配設して構成される蓄熱式空気調和機の例として
は、例えば特開平６−１４７６７８号公報に記載されて
いる。2. Description of the Related Art As an example of a regenerative air conditioner, a compressor, a condenser, a flow control valve, and an evaporator are sequentially connected by a refrigerant pipe, and a heat storage heat exchanger is arranged in the refrigerant pipe. Are described, for example, in Japanese Patent Application Laid-Open No. 6-147678.
【０００３】[0003]
【発明が解決しようとする課題】 上記従来の蓄熱式空
気調和機では、蓄熱熱交換器を複数台接続して構成して
おり、室外熱交換器と蓄熱熱交換器を共に凝縮器として
使用して蓄熱利用冷房運転時の凝縮圧力を下げ、圧縮機
の圧力比改善により消費電力の低減を図っているもの
の、さらなる凝縮圧力および消費電力の低減する手段に
は配慮がされていなかった。In the above-mentioned conventional heat storage type air conditioner, a plurality of heat storage heat exchangers are connected, and both the outdoor heat exchanger and the heat storage heat exchanger are used as condensers. Although the condensing pressure during the cooling operation using heat storage is lowered to reduce the power consumption by improving the pressure ratio of the compressor, no consideration has been given to means for further reducing the condensing pressure and the power consumption.
【０００４】本発明の目的は、ピーク時の消費電力の低
減幅をよりその他の時間帯よりも大きくした蓄熱式空気
調和機及びその制御方法を提供することにある。[0004] It is an object of the present invention to provide a regenerative air conditioner in which the reduction in power consumption during peak hours is made larger than in other time zones, and a control method thereof.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明は複数台とされ、室外ユニットと室内ユニッ
トとの間に設けられた蓄熱熱交換器と、圧縮機に接続さ
れる室外熱交換器及び室外流量調整弁と、室外熱交換器
の圧縮機側と室外流量調整弁側に接続された第１の開閉
弁と、複数台の蓄熱熱交換器の反室外流量調整弁側から
圧縮機の吸い込み側へそれぞれ接続された第２の開閉弁
と、第２の開閉弁と蓄熱熱交換器の間から室内膨張弁へ
それぞれ接続された第３の開閉弁と、を備え、蓄熱利用
冷房運転時に、複数の第２の開閉弁を閉弁し、閉弁され
た第２の開閉弁に接続された第３の開閉弁を開弁すると
共に、第１の開閉弁を開弁して圧縮機で吐出された冷媒
の一部をバイパスさせて室外流量調整弁を流れる冷媒の
流量を減少するものである。 Means for Solving the Problems To achieve the above object,
Therefore, the present invention comprises a plurality of heat storage heat exchangers provided between the outdoor unit and the indoor unit, an outdoor heat exchanger and an outdoor flow control valve connected to the compressor, and an outdoor heat exchanger. A first on-off valve connected to the compressor side and the outdoor flow control valve side, and a plurality of heat storage heat exchangers from the opposite outdoor flow control valve side
Second on-off valves respectively connected to the suction side of the compressor
When a third on-off valve connected respectively to the indoor expansion valve from between the second on-off valve and the heat storage heat exchanger, comprising a heat storage utilization
During the cooling operation, the plurality of second on-off valves are closed, and the valves are closed.
Opening the third on-off valve connected to the second on-off valve
In both cases, the first on-off valve is opened and the refrigerant discharged by the compressor
Of the refrigerant flowing through the outdoor flow control valve
It reduces the flow rate.
【０００６】また、本発明は圧縮機、室外熱交換器、室
外流量調整弁を有する室外ユニットと、室内膨張弁、室
内熱交換器を有する室内ユニットとを有する蓄熱式空気
調和機において、室外ユニットと室内ユニットとの間に
複数の蓄熱熱交換器を配設し、圧縮機で吐出された高温
高圧の冷媒の一方は室外熱交換器で凝縮し室外流量調整
弁を経由し、他方は高温高圧のガスのまま室外流量調整
弁を経由した一方と合流し、複数の蓄熱熱交換器に流入
するものである。 The present invention also relates to a compressor, an outdoor heat exchanger,
An outdoor unit having an outdoor flow control valve, an indoor expansion valve, and a chamber
Storage air having an indoor unit having an internal heat exchanger
In the harmonizer, between the outdoor unit and the indoor unit
With multiple heat storage heat exchangers installed, the high temperature discharged by the compressor
One of the high-pressure refrigerant is condensed in the outdoor heat exchanger and the outdoor flow rate is adjusted.
Via a valve, the other is a high-temperature, high-pressure gas while adjusting the outdoor flow rate
Merges with one via a valve and flows into multiple heat storage heat exchangers
Is what you do.
【０００７】[0007]
【０００８】[0008]
【発明の実施の形態】 本発明の実施例を図１〜図５に
示し以下説明する。◆図１は本発明の請求項１に記載の
蓄熱式空気調和機のシステム例を示したものである。全
体は１台の室外ユニット１に２台の蓄熱ユニット２ａ、
２ｂと複数台の室内ユニット３ａ、３ｂを冷媒配管で接
続して構成される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are shown in FIGS. FIG. 1 shows a system example of a regenerative air conditioner according to claim 1 of the present invention. The whole is one outdoor unit 1 and two heat storage units 2a,
2b and a plurality of indoor units 3a, 3b are connected by refrigerant piping.
【０００９】図２は本発明の請求項１および２に記載の
内容を含む蓄熱式空気調和機の一実施例を示したもので
ある。◆圧縮機４、四方弁５、室外熱交換器６、室外流
量調整弁７、室内流量調整弁８ａ、８ｂ、室内熱交換器
９ａ、９ｂ、四方弁５、圧縮機４を順次冷媒配管で接続
し、室外流量調整弁６と室内流量調整弁８ａ、８ｂの間
に冷媒配管を分岐して蓄熱流量調整弁１０ａ、１０ｂと
蓄熱槽１１ａ、１１ｂに内包された蓄熱熱交換器１２
ａ、１２ｂを直列に配設し、圧縮機４と四方弁５の間か
ら分岐して第１の開閉弁１３を室外流量調整弁７と蓄熱
流量調整弁１０ａ、１０ｂの分岐部の間に接続しホット
ガスバイパス回路を構成し、蓄熱熱交換器１２ａ、１２
ｂと室内流量調整弁８ａ、８ｂの間から分岐して第２の
開閉弁１４ａ、１４ｂを介して四方弁５、圧縮機４の吸
込側に接続し、第２の開閉弁１４ａ、１４ｂの分岐部か
ら室内流量制御弁８ａ、８ｂの間に第３の開閉弁１５
ａ、１５ｂを配設し、室外流量調整弁７と蓄熱流量調整
弁１０ａ、１０ｂの間と、室内流量調整弁９ａ、９ｂと
第３の開閉弁１５ａ、１５ｂの間をそれぞれ接続する位
置に第４の開閉弁１６を配設した構成としている。FIG. 2 shows an embodiment of a regenerative air conditioner including the contents described in claims 1 and 2 of the present invention. ◆ The compressor 4, the four-way valve 5, the outdoor heat exchanger 6, the outdoor flow control valve 7, the indoor flow control valves 8a and 8b, the indoor heat exchangers 9a and 9b, the four-way valve 5, and the compressor 4 are sequentially connected by refrigerant piping. Then, a refrigerant pipe is branched between the outdoor flow control valve 6 and the indoor flow control valves 8a and 8b, and the heat storage heat exchanger 12 contained in the heat storage flow control valves 10a and 10b and the heat storage tanks 11a and 11b.
a, 12b are arranged in series, and branched from between the compressor 4 and the four-way valve 5 to connect the first on-off valve 13 between the outdoor flow rate control valve 7 and the branch portion of the heat storage flow rate control valves 10a, 10b. A hot gas bypass circuit, and heat storage heat exchangers 12a and 12a.
b and a branch from between the indoor flow control valves 8a and 8b, and are connected to the four-way valve 5 and the suction side of the compressor 4 via the second on-off valves 14a and 14b, and the second on-off valves 14a and 14b are branched. Between the indoor flow rate control valves 8a and 8b from the third opening / closing valve 15
a and 15b are disposed at positions connecting the outdoor flow control valve 7 and the heat storage flow control valves 10a and 10b and the indoor flow control valves 9a and 9b and the third on-off valves 15a and 15b, respectively. 4 on-off valve 16 is provided.
【００１０】なお蓄熱流量調整弁１０ａ、１０ｂの圧力
損失を低減する目的でバイパス回路として、蓄熱流量調
整弁１０ａ、１０ｂの上流側と下流側に開閉弁を介して
冷媒配管を接続することもできるが図２では示していな
い。また第２の開閉弁１４ａ、１４ｂと第３の開閉弁１
５ａ、１５ｂは三方弁に置き換えることも可能であり、
その場合の切替運転は以下に説明する冷媒の流れと同様
になるように制御されれば良いのでここでは言及しな
い。In order to reduce the pressure loss of the heat storage flow control valves 10a and 10b, a refrigerant pipe may be connected to the upstream and downstream sides of the heat storage flow control valves 10a and 10b via on-off valves as a bypass circuit. However, it is not shown in FIG. The second on-off valves 14a and 14b and the third on-off valve 1
5a, 15b can be replaced with a three-way valve,
The switching operation in that case is not described here because it may be controlled so as to be similar to the flow of the refrigerant described below.
【００１１】図２では示さないが蓄熱槽１１ａ、１１ｂ
内の蓄熱媒体としては水が一般的であり、本発明につい
ても水の場合として説明を記述する。もちろん水以外の
蓄熱媒体であっても本発明の内容はそのまま適用でき
る。Although not shown in FIG. 2, the heat storage tanks 11a and 11b
Water is generally used as a heat storage medium, and the description of the present invention will be made in the case of water. Of course, the contents of the present invention can be applied to heat storage media other than water.
【００１２】図２に示した構成で運転される冷凍サイク
ルの冷媒の流れを次に説明する。◆蓄熱運転時について
説明する。圧縮機４で吐出された高温高圧の冷媒は四方
弁５を経由して室外熱交換器６で凝縮し液化する。液化
した冷媒は最大開度に開弁した室外流量調整弁７を経由
し、開度を減じて流量を絞り減圧機構として作用する蓄
熱流量制御弁１０ａ、１０ｂで減圧される。蓄熱槽１１
ａ、１１ｂに内包される蓄熱熱交換器１２ａ、１２ｂで
蒸発する冷媒は周囲の水を冷却し製氷する。蒸発した冷
媒は開弁した第２の開閉弁１４ａ、１４ｂ、四方弁５を
介して圧縮機４に戻る。この時第１の開閉弁１３、第３
の開閉弁１５ａ、１５ｂ、室内流量制御弁８ａ、８ｂは
閉弁しており室内熱交換器９ａ、９ｂには冷媒が流れな
い。ただし第４の開閉弁１６は通常は閉弁で良いが、運
転状態によっては開弁してもよい。Next, the flow of the refrigerant in the refrigeration cycle operated with the configuration shown in FIG. 2 will be described. The operation during the heat storage operation will be described. The high-temperature and high-pressure refrigerant discharged from the compressor 4 passes through the four-way valve 5 and is condensed and liquefied in the outdoor heat exchanger 6. The liquefied refrigerant passes through the outdoor flow control valve 7 that has been opened to the maximum opening, and is reduced in pressure by the heat storage flow control valves 10a and 10b that reduce the opening and reduce the flow rate and act as a pressure reducing mechanism. Thermal storage tank 11
The refrigerant evaporating in the heat storage heat exchangers 12a and 12b included in the heat storage heat exchangers 12a and 12b cools surrounding water and makes ice. The evaporated refrigerant returns to the compressor 4 through the opened second on-off valves 14a and 14b and the four-way valve 5. At this time, the first on-off valve 13, the third
The on-off valves 15a and 15b and the indoor flow control valves 8a and 8b are closed, and the refrigerant does not flow through the indoor heat exchangers 9a and 9b. However, the fourth on-off valve 16 may be normally closed, but may be opened depending on the operation state.
【００１３】また蓄熱運転中に個別の蓄熱ユニット２
ａ、２ｂについてセンサなどの信号により規定の蓄熱量
に達したと判断した場合には、蓄熱流量調整弁１０ａ、
１０ｂを全閉として冷媒の流れを遮断する。規定の蓄熱
量に達しない蓄熱ユニットはそのまま蓄熱運転を継続す
る。Further, during the heat storage operation, the individual heat storage units 2
When it is determined that the specified amount of heat storage has been reached by a signal from a sensor or the like for a and 2b, the heat storage flow rate adjusting valve 10a,
10b is fully closed to shut off the flow of the refrigerant. The heat storage unit that does not reach the specified heat storage amount continues the heat storage operation.
【００１４】次に蓄熱利用冷房運転時について説明す
る。蓄熱利用冷房運転にはどちらか一方だけ利用する場
合と２台の蓄熱熱交換器１２ａ、１２ｂを両方とも利用
する場合とがある。はじめに一方のみ利用する場合、次
に両方とも利用する場合を説明する。Next, a description will be given of a cooling operation using heat storage. In the cooling operation using heat storage, there is a case where only one of them is used and a case where both heat storage heat exchangers 12a and 12b are used. First, a case where only one is used and a case where both are used will be described.
【００１５】蓄熱熱交換器１２ａのみで蓄熱利用運転す
る場合、圧縮機４で吐出された高温高圧の冷媒は四方弁
５を経由して室外熱交換器６で凝縮し最大開度に開弁し
た室外流量調整弁７を経由し、室外流量調整弁７と最大
開度に開弁した蓄熱流量制御弁１０ａを経由して蓄熱熱
交換器１２ａに流入する。第１の開閉弁１３は閉弁のま
まであり高温高圧の冷媒が直接蓄熱流量開閉弁１０ａ、
１０ｂに流入することはない。In the heat storage operation using only the heat storage heat exchanger 12a, the high-temperature and high-pressure refrigerant discharged from the compressor 4 is condensed in the outdoor heat exchanger 6 via the four-way valve 5 and opened to the maximum opening. It flows into the heat storage heat exchanger 12a via the outdoor flow control valve 7, and via the outdoor flow control valve 7 and the heat storage flow control valve 10a opened to the maximum degree. The first on-off valve 13 remains closed, and the high-temperature and high-pressure refrigerant is directly stored in the heat storage flow rate on-off valve 10a.
It does not flow into 10b.
【００１６】蓄熱熱交換器１２ａでの熱交換により過冷
却されるがこのとき２台の蓄熱熱交換器１２ａ、１２ｂ
を利用した場合に比べ蓄熱熱交換器１２ａ内には液冷媒
が一杯になる。この液冷媒は開弁した第３の開閉弁１５
ａを介して減圧機構として作用する室内流量制御弁８
ａ、８ｂで減圧され、室内熱交換器９ａ、９ｂで蒸発す
ることにより室内の空気を冷却する。蒸発した冷媒は四
方切替弁５を経由して圧縮機４に戻る。このとき蓄熱流
量制御弁１０ｂは全閉であり冷媒が流れ込まないように
なっており、第２の開閉弁１４ｂは開弁しており蓄熱熱
交換器１４ｂは圧縮機４の吸入側に接続されるため蓄熱
熱交換器１２ｂ内に冷媒が溜まることはない。このとき
第４の開閉弁１６も閉弁しており冷媒が蓄熱熱交換器１
２ａ、１２ｂをバイパスしてしまうことはない。Subcooling is performed by heat exchange in the heat storage heat exchanger 12a. At this time, two heat storage heat exchangers 12a and 12b are used.
Is filled with the liquid refrigerant in the heat storage heat exchanger 12a as compared with the case of using the heat exchanger. This liquid refrigerant is supplied to the opened third opening / closing valve 15.
a flow rate control valve 8 acting as a pressure reducing mechanism via a
The indoor air is cooled by being decompressed at a and 8b and evaporated at the indoor heat exchangers 9a and 9b. The evaporated refrigerant returns to the compressor 4 via the four-way switching valve 5. At this time, the heat storage flow control valve 10b is fully closed so that the refrigerant does not flow in, the second on-off valve 14b is open, and the heat storage heat exchanger 14b is connected to the suction side of the compressor 4. Therefore, the refrigerant does not accumulate in the heat storage heat exchanger 12b. At this time, the fourth on-off valve 16 is also closed, and the refrigerant is stored in the heat storage heat exchanger 1.
There is no possibility of bypassing 2a and 12b.
【００１７】次に２台の蓄熱熱交換器１２ａ、１２ｂを
両方利用する場合を説明する。Next, a case where both heat storage heat exchangers 12a and 12b are used will be described.
【００１８】圧縮機４で吐出された高温高圧の冷媒は一
方は四方弁５を経由して室外熱交換器６で凝縮し最大開
度に開弁した室外流量調整弁７を経由し、他方は高温高
圧のガスのまま開弁した第１の開閉弁１３を経由し、室
外流量調整弁７と蓄熱流量調整弁１０ａ、１０ｂの間で
合流し最大開度に開弁した蓄熱流量調整弁１０ａ、１０
ｂを経由して蓄熱熱交換器１２ａ、１２ｂに流入する。
一部の冷媒が第１の開閉弁１３を経由することで室外流
量調整弁７を流れる冷媒の流量は減るので圧力損失は小
さくなる。One of the high-temperature and high-pressure refrigerant discharged from the compressor 4 passes through the four-way valve 5, condenses in the outdoor heat exchanger 6, passes through the outdoor flow control valve 7 opened to the maximum opening degree, and the other passes through. Via the first on-off valve 13 which is opened as a high-temperature and high-pressure gas, the heat storage flow control valve 10a which joins between the outdoor flow control valve 7 and the heat storage flow control valves 10a and 10b and opens to the maximum opening degree; 10
b flows into the heat storage heat exchangers 12a and 12b.
Since a part of the refrigerant passes through the first on-off valve 13, the flow rate of the refrigerant flowing through the outdoor flow control valve 7 is reduced, so that the pressure loss is reduced.
【００１９】このときの各蓄熱熱交換器１２ａ、１２ｂ
内において凝縮した液冷媒量は２台の蓄熱熱交換器を利
用しているので、蓄熱熱交換器１２ａ１台のみを利用す
るときの約０．５倍になる。したがって蓄熱熱交換器１
２ａ、１２ｂでの熱交換による冷媒の状態変化は凝縮お
よび過冷却されることとなる。At this time, each heat storage heat exchanger 12a, 12b
Since the amount of liquid refrigerant condensed in the inside uses two heat storage heat exchangers, it becomes about 0.5 times that when only one heat storage heat exchanger 12a is used. Therefore, the heat storage heat exchanger 1
The state change of the refrigerant due to the heat exchange in 2a and 12b results in condensation and supercooling.
【００２０】凝縮および過冷却された液冷媒は開弁した
第３の開閉弁１５ａ、１５ｂを介して減圧機構として作
用する室内流量制御弁８ａ、８ｂで減圧され、室内熱交
換器９ａ、９ｂで蒸発することにより室内の空気を冷却
する。蒸発した冷媒は四方弁５を経由して圧縮機４に戻
る。このとき第２の開閉弁１４ａ、１４ｂは閉弁してお
り蓄熱熱交換器１４ａ、１４ｂを介して四方弁５、圧縮
機４に冷媒が流れることはない。このとき第４の開閉弁
１６も閉弁しており冷媒が蓄熱熱交換器１２ａ、１２ｂ
をバイパスしてしまうことはない。The condensed and supercooled liquid refrigerant is depressurized by the indoor flow rate control valves 8a and 8b acting as a decompression mechanism via the opened third on-off valves 15a and 15b, and is depressurized by the indoor heat exchangers 9a and 9b. The room air is cooled by evaporation. The evaporated refrigerant returns to the compressor 4 via the four-way valve 5. At this time, the second on-off valves 14a and 14b are closed, and the refrigerant does not flow to the four-way valve 5 and the compressor 4 via the heat storage heat exchangers 14a and 14b. At this time, the fourth on-off valve 16 is also closed, and the refrigerant is stored in the heat storage heat exchangers 12a, 12b.
Will not be bypassed.
【００２１】また蓄熱流量調整弁１０ａ、１０ｂは最大
開度に開弁すべく制御されるが、弁口径など構造上の問
題があり圧力損失が大きくなる場合がある。その場合、
蓄熱流量調整弁１０ａ、１０ｂの上流側と下流側をバイ
パスさせるように冷媒配管を配設し途中に開閉弁を追加
してもよい。The heat storage flow control valves 10a and 10b are controlled so as to open to the maximum opening degree, but there is a structural problem such as a valve diameter, and the pressure loss may increase. In that case,
A refrigerant pipe may be provided so as to bypass the upstream and downstream sides of the heat storage flow control valves 10a and 10b, and an on-off valve may be added in the middle.
【００２２】一方第１の開閉弁１３は２台の蓄熱熱交換
器１２ａ、１２ｂを利用する際に開弁するものとして説
明したが、室外流量調整弁７における圧力損失が小さく
無視できる場合には必要ではなく省略可能である。◆ま
た第１の開閉弁１３を開弁して凝縮圧力を低減して運転
している間は、室外熱交換器６に空気を通過させるべく
配設されるファンを停止してさらに室外ユニット１の消
費電力を下げるべく運転することも可能である。 暖房運転時は、圧縮機４で吐出された高温高圧の冷媒が
流路方向の切り替わった四方弁５を経由して、室内熱交
換器９ａ、９ｂで凝縮することにより室内の空気が加熱
される。最大開度に開弁した室内流量調整弁８ａ、８
ｂ、開弁する第４の開閉弁１６を介して減圧機構として
作用する室外流量制御弁７で減圧され、室外熱交換器６
で蒸発した冷媒は四方弁５を経由して圧縮機４に戻る。
このとき蓄熱流量調整弁１０ａ、１０ｂ、第１の開閉弁
１３、第２の開閉弁１４ａ、１４ｂは閉弁しており蓄熱
熱交換器１２ａ、１２ｂには冷媒が流れない。On the other hand, the first opening / closing valve 13 has been described as being opened when the two heat storage heat exchangers 12a and 12b are used. However, if the pressure loss in the outdoor flow control valve 7 is small and can be ignored. It is not necessary and can be omitted. During the operation in which the first on-off valve 13 is opened to reduce the condensing pressure, the fan disposed to allow the air to pass through the outdoor heat exchanger 6 is stopped, and the outdoor unit 1 is further stopped. It is also possible to operate to reduce the power consumption of the vehicle. During the heating operation, the indoor air is heated by the high-temperature and high-pressure refrigerant discharged from the compressor 4 being condensed in the indoor heat exchangers 9a and 9b via the four-way valve 5 switched in the flow direction. . Indoor flow regulating valves 8a, 8 opened to maximum opening
b, the pressure is reduced by the outdoor flow control valve 7 acting as a pressure reducing mechanism via the fourth opening / closing valve 16 which opens, and the outdoor heat exchanger 6
The refrigerant evaporated in step (1) returns to the compressor 4 via the four-way valve 5.
At this time, the heat storage flow control valves 10a, 10b, the first opening / closing valve 13, and the second opening / closing valves 14a, 14b are closed, and no refrigerant flows through the heat storage heat exchangers 12a, 12b.
【００２３】図３は本発明の請求項１に記載の内容を含
む蓄熱式空気調和機のモリエル線図上での説明図を示
す。◆蓄熱熱交換器１２ａのみを蓄熱利用して冷房運転
している場合を実線で示す。また両方の蓄熱熱交換器１
２ａ、１２ｂを蓄熱利用して冷房運転している場合を波
線で示す。◆蓄熱熱交換器１２ａのみを蓄熱利用して冷
房運転している場合、図３の例では約２．０ＭＰａとな
っている。２台の蓄熱熱交換器１２ａ、１２ｂを使用す
る場合、蓄熱熱交換器１２ａ、１２ｂ内に存在する液冷
媒量は蓄熱熱交換器１２ａのみを蓄熱利用して冷媒運転
している場合の約０．５倍になる。これにより蓄熱熱交
換器１２ａ、１２ｂでの凝縮圧力は蓄熱熱交換器１２ａ
のみを蓄熱利用して冷媒運転している場合より低減でき
図３の例では約１．２ＭＰａである。◆図４は本発明の
請求項２に記載の内容を含む蓄熱式空気調和機の運転パ
ターンと消費電力の時間変化の一実施例を示したもので
ある。FIG. 3 is an explanatory diagram on a Mollier diagram of a regenerative air conditioner including the contents described in claim 1 of the present invention. ◆ The case where the cooling operation is performed using only the heat storage heat exchanger 12a to store heat is shown by a solid line. Also, both heat storage heat exchangers 1
The case where the cooling operation is performed by utilizing the heat storage of 2a and 12b is indicated by a dashed line. When the cooling operation is performed by using only the heat storage heat exchanger 12a for storing heat, the pressure is about 2.0 MPa in the example of FIG. When the two heat storage heat exchangers 12a and 12b are used, the amount of liquid refrigerant present in the heat storage heat exchangers 12a and 12b is about 0 in the case where the refrigerant is operated using only the heat storage heat exchanger 12a. .5 times. As a result, the condensing pressure in the heat storage heat exchangers 12a and 12b increases.
It can be reduced as compared with the case of operating the refrigerant using only the heat storage, and is about 1.2 MPa in the example of FIG. FIG. 4 shows an embodiment of an operation pattern of the regenerative air conditioner including the contents described in claim 2 of the present invention and a temporal change in power consumption.
【００２４】全体の冷凍サイクルは図２と同じ場合とし
て説明する。◆蓄熱利用運転開始時刻（Ｔ１）におい
て、２台の蓄熱熱交換器１２ａ、１２ｂを同時に使用す
る時刻（Ｔ２）までの時間（Ｔ３）を分割し、各分割し
た時間毎に蓄熱熱交換器１２ａ、１２ｂを個別に１台ず
つ利用する。時刻（Ｔ２）以降は蓄熱流量調整弁１０
ａ、１０ｂを全開として２台の蓄熱熱交換器を利用す
る。この時室外流量調整弁７の圧力損失が大きいような
ら同時に第１の開閉弁１３を開弁してホットガスバイパ
スを行う。さらに２台の蓄熱熱交換器１２ａ、１２ｂを
個別に１台ずつ使用する切換時刻（Ｔ４）以降蓄熱運転
開始時刻（Ｔ５）までの時間（Ｔ６）をＴ３時間と同様
に分割して運転する。◆これにより時刻（Ｔ２）から
（Ｔ４）までの間は凝縮圧力の低い運転になる。 Ｔ３時間、Ｔ６時間の分割の方法は単純に２分割する方
法が簡単であるが蓄熱利用可能な熱量の比較や蓄熱運転
に必要とした時間を考慮した重み付けといった方法であ
ってもよい。The entire refrigeration cycle will be described as being the same as in FIG. At the heat storage utilization operation start time (T1), the time (T3) until the time (T2) at which the two heat storage heat exchangers 12a and 12b are used simultaneously is divided, and the heat storage heat exchanger 12a is divided for each of the divided times. , 12b are individually used. After time (T2), the heat storage flow control valve 10
a, 10b are fully opened and two heat storage heat exchangers are used. At this time, if the pressure loss of the outdoor flow control valve 7 is large, the first on-off valve 13 is simultaneously opened to perform hot gas bypass. Further, the operation (T6) from the switching time (T4) after the two heat storage heat exchangers 12a and 12b are individually used to the heat storage operation start time (T5) is divided and operated in the same manner as the T3 time. ◆ Thereby, during the period from time (T2) to (T4), the operation becomes a low condensing pressure. As a method of dividing the time T3 and the time T6, it is easy to simply divide the time into two. However, a method of comparing the amount of heat that can be used for heat storage and a method of weighting in consideration of the time required for the heat storage operation may be used.
【００２５】図５は本発明の請求項３に記載の内容を含
む蓄熱式空気調和機の一実施例を示したものである。◆
２台の蓄熱熱交換器１２ａ、１２ｂが１台の蓄熱槽１１
に入った構成とした部分が図２の場合と異なっている。FIG. 5 shows an embodiment of a regenerative air conditioner including the contents described in claim 3 of the present invention. ◆
Two heat storage heat exchangers 12a and 12b are used as one heat storage tank 11.
The difference between the configuration shown in FIG.
【００２６】[0026]
【発明の効果】本発明によれば、蓄熱利用冷房運転時の
凝縮圧力を下げ、室外流量調整弁の圧力損失を低減する
ので、電力使用量のピーク時の消費電力の低減幅を大き
くできる。According to the present invention, the condensing pressure during the cooling operation using the heat storage is reduced, and the pressure loss of the outdoor flow control valve is reduced, so that the reduction in power consumption at the peak power consumption can be increased.
【００２７】[0027]
【００２８】[0028]
【００２９】[0029]
【図１】 本発明を実施する蓄熱式空気調和機のシステ
ムの一例FIG. 1 shows an example of a regenerative air conditioner system embodying the present invention.
【図２】 本発明を実施する冷凍サイクルの一実施例FIG. 2 shows an embodiment of a refrigeration cycle for implementing the present invention.
【図３】 本発明を実施する冷凍サイクルのモリエル線
図の一例FIG. 3 is an example of a Mollier diagram of a refrigeration cycle for implementing the present invention.
【図４】 本発明を実施する冷凍サイクルの運転パター
ンの一実施例FIG. 4 shows an embodiment of an operation pattern of a refrigeration cycle for implementing the present invention.
【図５】 本発明を実施する冷凍サイクルの他の実施例FIG. 5 shows another embodiment of a refrigeration cycle for implementing the present invention.
１…室外ユニット、２ａ、２ｂ…蓄熱ユニット、３ａ、
３ｂ…室内ユニット、４…圧縮機、５…四方弁、６…室
外熱交換器、７…室外流量調整弁、８ａ、８ｂ…室内流
量調整弁、９ａ、９ｂ…室内熱交換器、１０、１０ａ、
１０ｂ…蓄熱流量調整弁、１１ａ、１１ｂ…蓄熱槽、１
２ａ、１２ｂ…蓄熱熱交換器、１３…第１の開閉弁、１
４ａ、１４ｂ…第２の開閉弁、１５ａ、１５ｂ…第３の
開閉弁、１６…第４の開閉弁。1 outdoor unit, 2a, 2b heat storage unit, 3a,
3b ... indoor unit, 4 ... compressor, 5 ... four-way valve, 6 ... outdoor heat exchanger, 7 ... outdoor flow control valve, 8a, 8b ... indoor flow control valve, 9a, 9b ... indoor heat exchanger, 10, 10a ,
10b: heat storage flow control valve, 11a, 11b: heat storage tank, 1
2a, 12b: heat storage heat exchanger, 13: first on-off valve, 1
4a, 14b: second on-off valve, 15a, 15b: third on-off valve, 16: fourth on-off valve.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−147678（ＪＰ，Ａ) 特開 平７−127944（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 1/00 F25B 13/00 F24F 11/02 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-147678 (JP, A) JP-A-7-127944 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F25B 1/00 F25B 13/00 F24F 11/02
Claims (2)
トと、蓄熱膨張弁、蓄熱熱交換器を有する蓄熱ユニット
と、室内膨張弁、室内熱交換器を有する室内ユニットと
を冷媒配管で接続された蓄熱式空気調和機において、 複数台とされ、前記室外ユニットと前記室内ユニットと
の間に設けられた前記蓄熱熱交換器と、 前記圧縮機に接続される室外熱交換器及び室外流量調整
弁と、 前記室外熱交換器の前記圧縮機側と前記室外流量調整弁
側に接続された第１の開閉弁と、 複数台の前記蓄熱熱交換器の反前記室外流量調整弁側か
ら前記圧縮機の吸い込み側へそれぞれ接続された第２の
開閉弁と、 前記第２の開閉弁と前記蓄熱熱交換器の間から前記室内
膨張弁へそれぞれ接続された第３の開閉弁と、を備え、蓄熱利用冷房運転時に、複数の前記第２の開閉
弁を閉弁し、閉弁された前記第２の開閉弁に接続された
前記第３の開閉弁を開弁すると共に、前記第１の開閉弁
を開弁して前記圧縮機で吐出された冷媒の一部をバイパ
スさせて前記室外流量調整弁を流れる冷媒の流量を減少
する ことを特徴とする蓄熱式空気調和機。An outdoor unit having a compressor and an outdoor heat exchanger, a heat storage unit having a heat storage expansion valve and a heat storage heat exchanger, and an indoor unit having an indoor expansion valve and an indoor heat exchanger are connected by refrigerant piping. In the heat storage type air conditioner, a plurality of heat storage heat exchangers are provided between the outdoor unit and the indoor unit, an outdoor heat exchanger connected to the compressor, and an outdoor flow rate adjustment. A valve, a first on-off valve connected to the compressor side and the outdoor flow rate control valve side of the outdoor heat exchanger, and a plurality of the heat storage heat exchangers opposite the outdoor flow rate control valve side.
Connected to the suction side of the compressor respectively.
An on-off valve, and a third on-off valve respectively connected to the indoor expansion valve from between the second on-off valve and the heat storage heat exchanger, and a plurality of the second Opening and closing
Close the valve and connect to the closed second on-off valve
Opening the third on-off valve and the first on-off valve
And a part of the refrigerant discharged from the compressor is bypassed.
To reduce the flow rate of refrigerant flowing through the outdoor flow control valve.
A regenerative air conditioner characterized in that:
有する室外ユニットと、室内膨張弁、室内熱交換器を有
する室内ユニットとを有する蓄熱式空気調和機におい
て、前記室外ユニットと前記室内ユニットとの間に複数
の蓄熱熱交換器を配設し、前記圧縮機で吐出された高温
高圧の冷媒の一方は前記室外熱交換器で凝縮し前記室外
流量調整弁を経由し、他方は高温高圧のガスのまま前記
室外流量調整弁を経由した一方と合流し、前記複数の蓄
熱熱交換器に流入することを特徴とした蓄熱式空気調和
機。2. A regenerative air conditioner having an outdoor unit having a compressor, an outdoor heat exchanger, and an outdoor flow control valve , and an indoor unit having an indoor expansion valve and an indoor heat exchanger. Arranging a plurality of heat storage heat exchangers between the indoor unit and the high temperature discharged by the compressor
One of the high-pressure refrigerant is condensed in the outdoor heat exchanger and
Via the flow control valve, the other is a high temperature and high pressure gas
Merges with one that has passed through the outdoor flow control valve, and
A regenerative air conditioner characterized by flowing into a heat heat exchanger .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03086098A JP3304866B2 (en) | 1998-02-13 | 1998-02-13 | Thermal storage type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03086098A JP3304866B2 (en) | 1998-02-13 | 1998-02-13 | Thermal storage type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11230630A JPH11230630A (en) | 1999-08-27 |
| JP3304866B2 true JP3304866B2 (en) | 2002-07-22 |
Family
ID=12315489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03086098A Expired - Fee Related JP3304866B2 (en) | 1998-02-13 | 1998-02-13 | Thermal storage type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3304866B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5572579B2 (en) * | 2011-04-14 | 2014-08-13 | 日立アプライアンス株式会社 | Thermal storage air conditioner |
| CN102287966A (en) * | 2011-07-31 | 2011-12-21 | 湖南科技学院 | Refrigeration, heating and water boiling multipurpose air conditioner |
| CN105874282B (en) * | 2013-12-25 | 2019-03-22 | 三菱电机株式会社 | Air-conditioning device |
| JP2016125727A (en) * | 2014-12-26 | 2016-07-11 | ダイキン工業株式会社 | Heat storage type air conditioner |
-
1998
- 1998-02-13 JP JP03086098A patent/JP3304866B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11230630A (en) | 1999-08-27 |
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