JP2001174089A - Multiple-chamber-type air-conditioner - Google Patents
Multiple-chamber-type air-conditionerInfo
- Publication number
- JP2001174089A JP2001174089A JP36076199A JP36076199A JP2001174089A JP 2001174089 A JP2001174089 A JP 2001174089A JP 36076199 A JP36076199 A JP 36076199A JP 36076199 A JP36076199 A JP 36076199A JP 2001174089 A JP2001174089 A JP 2001174089A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- indoor unit
- valve
- indoor
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0232—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
- F25B2313/02344—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements during heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (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、多室形空気調和機
に係わり、より詳細には、一方の室内機を冷房運転する
と同時に、他方の室内機を暖房運転できるようにした冷
媒回路の構成に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-room air conditioner, and more particularly, to a configuration of a refrigerant circuit in which one indoor unit can be operated for cooling while the other indoor unit can be operated for heating. About.
【０００２】[0002]
【従来の技術】従来の多室形空気調和機は、例えば図６
で示すような冷媒回路で構成されている。図において、
21は室外機、22a および22b は第一室内機と、第二室内
機である。23は冷媒を圧縮し高温高圧のガスにする圧縮
機、24は冷媒の流れる方向を変えて冷房運転と暖房運転
の切り換えを行う四方弁、25は冷房運転時に凝縮器、暖
房運転時に蒸発器として機能する室外熱交換器である。
26a および26b は冷房運転時に蒸発器、暖房運転時に凝
縮器として機能し、前記第一室内機22a および第二室内
機22b にそれぞれ搭載された第一室内熱交換器と第一室
内熱交換器である。2. Description of the Related Art A conventional multi-chamber air conditioner is shown in FIG.
And a refrigerant circuit as shown in FIG. In the figure,
21 is an outdoor unit, 22a and 22b are a first indoor unit and a second indoor unit. 23 is a compressor that compresses the refrigerant into a high-temperature and high-pressure gas, 24 is a four-way valve that changes the direction of flow of the refrigerant to switch between cooling operation and heating operation, 25 is a condenser during cooling operation and an evaporator during heating operation It is an outdoor heat exchanger that works.
26a and 26b function as an evaporator during the cooling operation and as a condenser during the heating operation, and include a first indoor heat exchanger and a first indoor heat exchanger mounted on the first indoor unit 22a and the second indoor unit 22b, respectively. is there.
【０００３】前記室外熱交換器25に第一膨張弁27および
前記第一室内機22a の第一室内熱交換器26a と、第二膨
張弁28および前記第二室内機22b の第二室内熱交換器26
b とを、ディストリビュータ29により分岐し、接続配管
により前記四方弁24に並列に接続して冷凍サイクルを形
成した構成となっている。The outdoor heat exchanger 25 has a first expansion valve 27 and a first indoor heat exchanger 26a of the first indoor unit 22a, and a second expansion valve 28 and a second indoor heat exchange of the second indoor unit 22b. Container 26
b is branched by a distributor 29 and connected in parallel to the four-way valve 24 by a connection pipe to form a refrigeration cycle.
【０００４】上記構成において、冷房運転時は、圧縮機
27から吐出された高温高圧の冷媒は破線矢印で示すよう
に前記四方弁24を通り、前記室外熱交換器25に流入し、
室外に熱を放出して凝縮液化し、前記ディストリビュー
タ29により分岐して、前記第一膨張弁27および第二膨張
弁28により減圧膨張し、前記室内機22a の室内熱交換器
26a および前記室内機22b の室内熱交換器26b に流入し
て蒸発気化し、室内の熱を吸収した後、四方弁24を経
て、再び前記圧縮機23に流入する。[0004] In the above configuration, during the cooling operation, the compressor
The high-temperature and high-pressure refrigerant discharged from 27 passes through the four-way valve 24 as shown by a dashed arrow, flows into the outdoor heat exchanger 25,
The heat is released to the outside of the room, condensed and liquefied, branched by the distributor 29, decompressed and expanded by the first expansion valve 27 and the second expansion valve 28, and the indoor heat exchanger of the indoor unit 22a.
After flowing into the indoor heat exchanger 26b of the indoor unit 26b and evaporating and evaporating and absorbing the indoor heat, it flows into the compressor 23 again through the four-way valve 24.
【０００５】暖房運転時は、前記圧縮機23から吐出され
た高温高圧の冷媒は、実線矢印で示すように前記四方弁
24を通り前記室内機22a の室内熱交換器26a および前記
室内機22b の室内熱交換器26b に流入し、室内に熱を放
出して凝縮液化した後、前記第一膨張弁27および第二膨
張弁28により減圧膨張し、前記ディストリビュータ29に
より合流して前記室外熱交換器25に流入する。同室外熱
交換器25にて冷媒は蒸発気化して室外の熱を吸収した
後、前記四方弁24をを経て再び前記圧縮機23に流入す
る。During the heating operation, the high-temperature and high-pressure refrigerant discharged from the compressor 23 is supplied to the four-way valve as indicated by a solid arrow.
After flowing into the indoor heat exchanger 26a of the indoor unit 22a and the indoor heat exchanger 26b of the indoor unit 22b, and releasing heat into the room to condense and liquefy, the first expansion valve 27 and the second expansion valve It is decompressed and expanded by the valve 28, joined by the distributor 29 and flows into the outdoor heat exchanger 25. The refrigerant evaporates and evaporates in the outdoor heat exchanger 25 to absorb outdoor heat, and then flows into the compressor 23 again through the four-way valve 24.
【０００６】しかしながら、上記のような構成では、例
えば前記第一室内機22a を冷房運転すると同時に、前記
第二室内機22b を暖房運転することはできず、常に２台
の室内機を冷房運転あるいは暖房運転の同一運転モード
でしか運転できず、近年のＯＡ機器の普及による室内熱
負荷の増大による、冬季のような低外気温時に、一方の
室内機は暖房運転を行い、他の室内機は冷房運転を行う
というようなニーズには対応できないという問題を有し
ている。However, in the above-described configuration, for example, the cooling operation of the first indoor unit 22a and the heating operation of the second indoor unit 22b cannot be performed at the same time. Only the same operation mode of the heating operation can be operated, and due to the increase in indoor heat load due to the spread of OA equipment in recent years, at a low outside temperature such as winter, one indoor unit performs the heating operation and the other indoor unit performs the heating operation. There is a problem that it is not possible to meet the needs such as performing the cooling operation.
【０００７】[0007]
【発明が解決しようとする課題】本発明においては、上
記問題点に鑑み、冬季のような低外気温時に、一方の室
内機は暖房運転を行い、他方の室内機は冷房運転または
暖房運転を任意に選択できる多室形空気調和機を提供す
ることを目的とする。SUMMARY OF THE INVENTION In view of the above problems, in the present invention, one of the indoor units performs a heating operation and the other indoor unit performs a cooling operation or a heating operation at a low outside temperature such as winter. It is an object to provide a multi-room air conditioner that can be arbitrarily selected.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記課題を解
決するため、圧縮機と、四方弁と、室外熱交換器と、前
記四方弁と室外熱交換器に対して並列に、第一膨張弁お
よび第一室内機を構成する第一室内熱交換器と、第二膨
張弁および第二室内機を構成するの第二室内熱交換器と
を接続して冷凍サイクルを形成してなる多室形空気調和
機において、前記第一室内熱交換器と前記四方弁との接
続配管に開閉弁を設けるとともに、同開閉弁と前記第一
室内熱交換器との接続配管と、前記第二膨張弁と前記第
二室内熱交換器との接続配管を接続する第三膨張弁を備
えたバイパス管を設け、前記第二室内機を暖房運転した
時、前記第一室内機を冷房運転または暖房運転に選択可
能とした構成となっている。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a compressor, a four-way valve, an outdoor heat exchanger, and a four-way valve and an outdoor heat exchanger. A refrigeration cycle is formed by connecting a first indoor heat exchanger forming an expansion valve and a first indoor unit and a second indoor heat exchanger forming a second expansion valve and a second indoor unit. In the room-type air conditioner, an on-off valve is provided in a connection pipe between the first indoor heat exchanger and the four-way valve, and a connection pipe between the on-off valve and the first indoor heat exchanger is provided with the second expansion valve. A bypass pipe provided with a third expansion valve for connecting a valve and a connection pipe between the second indoor heat exchanger is provided, and when the second indoor unit is heated, the first indoor unit is cooled or heated. Is selectable.
【０００９】また、前記第三膨張弁を閉じることによ
り、前記第一室内機と前記第二室内機とを、同一運転モ
ードで運転可能とした構成となっている。Further, by closing the third expansion valve, the first indoor unit and the second indoor unit can be operated in the same operation mode.
【００１０】また、前記第一室内機を暖房運転し、前記
第二室内機を停止した際前記第二膨張弁を、または前記
第二室内機を暖房運転し、前記第一室内機を停止した際
前記第一膨張弁をそれぞれ所定周期で開閉し、冷媒の寝
込みを防止する構成となっている。In addition, when the first indoor unit is heated and the second indoor unit is stopped, the second expansion valve or the second indoor unit is heated and the first indoor unit is stopped. In this case, the first expansion valves are opened and closed at predetermined intervals to prevent refrigerant from stagnation.
【００１１】また、前記開閉弁に電磁弁を用いた構成と
なっている。[0011] Further, a solenoid valve is used as the on-off valve.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を、添
付図面に基づいた実施例として説明する。図１は、本発
明による多室形空気調和機の冷媒回路の構成を示す図で
あり、図２は、各運転モードにおける開閉弁および各膨
張弁の開閉及び絞り制御を示す図である。図において、
１は室外機、2aおよび2bは同時または何れか一方を任意
に運転できる第一室内機と、第二室内機である。３は冷
媒を圧縮し高温高圧のガスにする圧縮機、４は冷媒の流
れる方向を変えて冷房運転と暖房運転等の切り換えを行
う四方弁、５は冷房運転時に凝縮器、暖房運転時に蒸発
器として機能する室外熱交換器である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 is a diagram showing a configuration of a refrigerant circuit of a multi-room air conditioner according to the present invention, and FIG. 2 is a diagram showing opening / closing and throttle control of an on-off valve and each expansion valve in each operation mode. In the figure,
Reference numeral 1 denotes an outdoor unit, and 2a and 2b denote a first indoor unit and a second indoor unit which can simultaneously or arbitrarily operate one of them. Reference numeral 3 denotes a compressor that compresses the refrigerant into a high-temperature and high-pressure gas. 4 denotes a four-way valve that changes the direction of flow of the refrigerant to switch between a cooling operation and a heating operation. 5 denotes a condenser during the cooling operation and an evaporator during the heating operation. An outdoor heat exchanger that functions as
【００１３】6aおよび6bは冷房運転時に蒸発器、暖房運
転時に凝縮器として機能し、前記第一室内機2aおよび第
二室内機2bにそれぞれ搭載された第一室内熱交換器と第
二室内熱交換器である。6a and 6b function as an evaporator during the cooling operation and as a condenser during the heating operation. The first indoor heat exchanger and the second indoor heat exchanger mounted on the first indoor unit 2a and the second indoor unit 2b, respectively. It is an exchanger.
【００１４】前記室外熱交換器５に第一膨張弁７および
前記第一室内機2aの第一室内熱交換器6aと、第二膨張弁
８および前記第二室内機2bの第二室内熱交換器6bとを、
ディストリビュータ９により分岐し、接続配管により前
記四方弁４に並列に接続して冷凍サイクルを形成した構
成となっている。The outdoor heat exchanger 5 includes a first expansion valve 7 and a first indoor heat exchanger 6a of the first indoor unit 2a, and a second expansion valve 8 and a second indoor heat exchange of the second indoor unit 2b. Container 6b,
The refrigerant is branched by a distributor 9 and connected in parallel to the four-way valve 4 by a connection pipe to form a refrigeration cycle.
【００１５】前記第一室内熱交換器6aと前記四方弁４と
の接続配管１０に、電磁弁からなる開閉弁１１を設ける
とともに、同開閉弁１１と前記第一室内熱交換器6aとの
前記１０配管と、前記第二膨張弁８と前記第二室内熱交
換器6bとの接続配管１２を接続する第三膨張弁１３を備
えたバイパス管１４を設けた構成となっている。An on-off valve 11 comprising an electromagnetic valve is provided in a connecting pipe 10 between the first indoor heat exchanger 6a and the four-way valve 4, and the on-off valve 11 and the first indoor heat exchanger 6a are connected to each other. 10 and a bypass pipe 14 having a third expansion valve 13 for connecting a connection pipe 12 between the second expansion valve 8 and the second indoor heat exchanger 6b.
【００１６】上記構成において、冷媒回路の動作につい
て説明する。前記第一室内機2aおよび第二室内機2bと
が、冷房運転または暖房運転により同時に、且つ同一運
転モードで運転される場合、図２の制御図に示すよう
に、前記開閉弁１１開かれ、前記第三膨張弁１３は閉じ
られ、前記第一膨張弁７および前記第二膨張弁８は絞り
制御に設定される。冷房運転及び暖房運転の場合の冷媒
の流れは従来例で示したものと同じである。In the above configuration, the operation of the refrigerant circuit will be described. When the first indoor unit 2a and the second indoor unit 2b are simultaneously operated by the cooling operation or the heating operation and in the same operation mode, as shown in the control diagram of FIG. 2, the on-off valve 11 is opened, The third expansion valve 13 is closed, and the first expansion valve 7 and the second expansion valve 8 are set to throttle control. The flow of the refrigerant in the cooling operation and the heating operation is the same as that shown in the conventional example.
【００１７】次に、第二室内機2bが暖房運転で、第一室
内機2aが冷房運転される場合は、図２の制御図に示すよ
うに、前記開閉弁１１および前記第二膨張弁８は閉じら
れ、前記第三膨張弁１３は絞り制御に設定され、前記第
一膨張弁７が開かれる。前記圧縮機３から吐出された高
温高圧の冷媒は、図３の実線矢印で示すように、前記四
方弁４を通り、前記第二室内機2bの前記第二室内熱交換
器6bに至り、同第二室内熱交換器6bで室内に熱を放出し
て凝縮液化した後、前記バイパス管１４に流入する。同
バイパス管１４に備えられた前記第三膨張弁１３の絞り
制御により減圧膨張された冷媒は、前記第一室内機2aの
前記第一室内熱交換器6aに至り、同第一室内熱交換器6a
で蒸発気化して室内の熱を吸収した後、前記第一膨張弁
７を経て、前記室外熱交換器５に流入し、室外に熱を放
出して凝縮液化した後、前記四方弁４を通り、前記圧縮
機３に戻る。Next, when the second indoor unit 2b is in the heating operation and the first indoor unit 2a is in the cooling operation, as shown in the control diagram of FIG. 2, the on-off valve 11 and the second expansion valve 8 are operated. Is closed, the third expansion valve 13 is set to throttle control, and the first expansion valve 7 is opened. The high-temperature and high-pressure refrigerant discharged from the compressor 3 passes through the four-way valve 4 and reaches the second indoor heat exchanger 6b of the second indoor unit 2b as shown by a solid arrow in FIG. The heat is released into the room by the second indoor heat exchanger 6b to condense and liquefy, and then flows into the bypass pipe 14. The refrigerant decompressed and expanded by the throttle control of the third expansion valve 13 provided in the bypass pipe 14 reaches the first indoor heat exchanger 6a of the first indoor unit 2a, and the first indoor heat exchanger 6a
After evaporating to absorb the heat in the room, it flows into the outdoor heat exchanger 5 through the first expansion valve 7 and discharges the heat to the outside to condense and liquefy, and then passes through the four-way valve 4. , And return to the compressor 3.
【００１８】次に、前記第一室内機2aで冷房運転を行
い、前記第二室内機2bは停止させる場合について説明す
る。この状態においては、前記開閉弁１１が開かれ、前
記第二膨張弁８および前記第三膨張弁１３は閉じられ、
前記第一膨張弁７は絞り制御に設定される。前記圧縮機
３から吐出された高温高圧の冷媒は、図４の破線矢印で
示すように、前記四方弁４を通り前記室外熱交換器５に
至り、同室外熱交換器５で室外に熱を放出して凝縮液化
した後、前記第一膨張弁７の絞り制御により減圧膨張さ
れ、前記第一室内機2aの前記第一室内熱交換器6aに至
り、同第一室内熱交換器6aで蒸発気化して室内の熱を吸
収した後、前記開閉弁１１を通り、前記四方弁４を経て
前記圧縮機３に戻る。Next, a case where the first indoor unit 2a performs a cooling operation and the second indoor unit 2b is stopped will be described. In this state, the on-off valve 11 is opened, the second expansion valve 8 and the third expansion valve 13 are closed,
The first expansion valve 7 is set to throttle control. The high-temperature and high-pressure refrigerant discharged from the compressor 3 passes through the four-way valve 4 and reaches the outdoor heat exchanger 5 as shown by a dashed arrow in FIG. After being released and condensed and liquefied, it is decompressed and expanded by the throttle control of the first expansion valve 7, reaches the first indoor heat exchanger 6a of the first indoor unit 2a, and evaporates in the first indoor heat exchanger 6a. After being vaporized and absorbing indoor heat, it passes through the on-off valve 11 and returns to the compressor 3 via the four-way valve 4.
【００１９】次に、前記第一室内機2aで暖房運転を行
い、前記第二室内機2bは停止させる場合について説明す
る。この状態においては、前記開閉弁１１が開かれ、前
記第二膨張弁８および前記第三膨張弁１３は閉じられ、
前記第一膨張弁７は絞り制御に設定される。前記圧縮機
３から吐出された高温高圧の冷媒は、図５の実線矢印で
示すように、前記四方弁４を通り前記開閉弁１１を経て
前記第一室内機2aの前記第一室内熱交換器6aに至り、同
第一室内熱交換器6aで室外に熱を放出して凝縮液化した
後、前記第一膨張弁７の絞り制御により減圧膨張され、
前記室外熱交換器５に至り、同室外熱交換器５で蒸発気
化して室外の熱を吸収した後、前記四方弁４を通り前記
圧縮機３に戻る。Next, a case where the first indoor unit 2a performs a heating operation and the second indoor unit 2b is stopped will be described. In this state, the on-off valve 11 is opened, the second expansion valve 8 and the third expansion valve 13 are closed,
The first expansion valve 7 is set to throttle control. The high-temperature and high-pressure refrigerant discharged from the compressor 3 passes through the four-way valve 4, passes through the on-off valve 11, and passes through the on-off valve 11, as shown by the solid line arrow in FIG. After reaching 6a, the first indoor heat exchanger 6a releases heat to the outside to condense and liquefy, and is decompressed and expanded by the throttle control of the first expansion valve 7,
After reaching the outdoor heat exchanger 5 and evaporating and absorbing the outdoor heat in the outdoor heat exchanger 5, it returns to the compressor 3 through the four-way valve 4.
【００２０】また、前記第一室内機2aを暖房運転し、前
記第二室内機2bを停止した際、前記第二膨張弁８を、ま
たは前記第二室内機2bを暖房運転し、前記第一室内機2a
を停止した際、前記第一膨張弁７をそれぞれ所定周期で
開閉し、冷媒の寝込みを防止する構成となっている。When the first indoor unit 2a is operated for heating and the second indoor unit 2b is stopped, the second expansion valve 8 or the second indoor unit 2b is operated for heating and the first indoor unit 2b is operated. Indoor unit 2a
Is stopped, the first expansion valve 7 is opened and closed at predetermined intervals to prevent refrigerant from stagnation.
【００２１】以上説明したように、第二室内機2bが暖房
運転で、第一室内機2aが冷房運転または暖房運転ができ
る任意に選択できる構成とすることにより、近年のＯＡ
機器の普及による室内熱負荷の増大による、冬季のよう
な低外気温時に、一方の室内機は暖房運転を行い、他の
室内機は冷房運転を行うというようなニーズには対応で
きる多室形空気調和機となる。As described above, by adopting a configuration in which the second indoor unit 2b can perform the heating operation and the first indoor unit 2a can perform the cooling operation or the heating operation, the OA in recent years can be selected.
A multi-room type that can meet the needs of one indoor unit performing heating operation and the other indoor unit performing cooling operation during low outdoor temperatures such as winter due to an increase in indoor heat load due to the spread of equipment. It becomes an air conditioner.
【００２２】[0022]
【発明の効果】以上のように、本発明によると、第二室
内機が暖房運転で、第一室内機が冷房運転または暖房運
転ができる任意に選択できる構成とすることにより、近
年のＯＡ機器の普及による室内熱負荷の増大による、冬
季のような低外気温時に、一方の室内機は暖房運転を行
い、他の室内機は冷房運転を行うというようなニーズに
は対応できる多室形空気調和機となる。As described above, according to the present invention, the OA equipment in recent years can be arbitrarily selected so that the second indoor unit can perform the heating operation and the first indoor unit can perform the cooling operation or the heating operation. At the time of low outdoor temperature such as winter due to the increase of indoor heat load due to the spread of indoors, one indoor unit performs heating operation and the other indoor unit performs cooling operation. It becomes a harmony machine.
【図１】本発明による多室形空気調和機の冷媒回路図で
ある。FIG. 1 is a refrigerant circuit diagram of a multi-room air conditioner according to the present invention.
【図２】本発明による多室形空気調和機の各運転モード
における開閉弁および各膨張弁の開閉および絞り制御を
示す図である。FIG. 2 is a diagram showing opening / closing and throttle control of an on-off valve and each expansion valve in each operation mode of the multi-room air conditioner according to the present invention.
【図３】本発明による多室形空気調和機の冷暖房同時運
転時の冷媒回路図である。FIG. 3 is a refrigerant circuit diagram of the multi-room air conditioner according to the present invention during simultaneous cooling and heating operations.
【図４】本発明による多室形空気調和機の一台のみ冷房
運転時の冷媒回路図である。FIG. 4 is a refrigerant circuit diagram when only one of the multi-room air conditioners according to the present invention is in a cooling operation.
【図５】本発明による多室形空気調和機の一台のみ暖房
運転時の冷媒回路図である。FIG. 5 is a refrigerant circuit diagram when only one of the multi-room air conditioners according to the present invention is in a heating operation.
【図６】従来例による多室形空気調和機の冷媒回路図で
ある。FIG. 6 is a refrigerant circuit diagram of a conventional multi-room air conditioner.
１ 室外機 2a 第一室内機 2b 第二室内機 ３ 圧縮機 ４ 四方弁 ５ 室外熱交換器 6a 第一室内熱交換器 6b 第二室内熱交換器 ７ 第一膨張弁 ８ 第二膨張弁 ９ デストリビュータ 10,12 接続配管 11 開閉弁（電磁弁） 13 第三膨張弁 14 バイパス管 DESCRIPTION OF SYMBOLS 1 Outdoor unit 2a First indoor unit 2b Second indoor unit 3 Compressor 4 Four-way valve 5 Outdoor heat exchanger 6a First indoor heat exchanger 6b Second indoor heat exchanger 7 First expansion valve 8 Second expansion valve 9 Distri Viewer 10, 12 Connection piping 11 On-off valve (solenoid valve) 13 Third expansion valve 14 Bypass pipe
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２５Ｂ 41/04 Ｆ２５Ｂ 41/04 Ｅ Ｇ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F25B 41/04 F25B 41/04 EG
Claims (4)
前記四方弁と室外熱交換器に対して並列に、第一膨張弁
および第一室内機を構成する第一室内熱交換器と、第二
膨張弁および第二室内機を構成するの第二室内熱交換器
とを接続して冷凍サイクルを形成してなる多室形空気調
和機において、 前記第一室内熱交換器と前記四方弁との接続配管に開閉
弁を設けるとともに、同開閉弁と前記第一室内熱交換器
との接続配管と、前記第二膨張弁と前記第二室内熱交換
器との接続配管を接続する第三膨張弁を備えたバイパス
管を設け、前記第二室内機を暖房運転した時、前記第一
室内機を冷房運転または暖房運転に選択可能としたこと
を特徴とする多室形空気調和機。1. A compressor, a four-way valve, an outdoor heat exchanger,
In parallel with the four-way valve and the outdoor heat exchanger, a first indoor heat exchanger forming a first expansion valve and a first indoor unit, and a second indoor forming a second expansion valve and a second indoor unit. In a multi-room air conditioner formed by connecting a heat exchanger and forming a refrigeration cycle, an on-off valve is provided in a connection pipe between the first indoor heat exchanger and the four-way valve, and the on-off valve and the A connection pipe for the first indoor heat exchanger, and a bypass pipe having a third expansion valve for connecting the connection pipe between the second expansion valve and the second indoor heat exchanger are provided, and the second indoor unit is provided. A multi-room air conditioner wherein the first indoor unit can be selected from a cooling operation and a heating operation when the heating operation is performed.
記第一室内機と前記第二室内機とを、同一運転モードで
運転可能としてなることを特徴とする請求項１に記載の
多室形空気調和機。2. The multi-chamber according to claim 1, wherein by closing the third expansion valve, the first indoor unit and the second indoor unit can be operated in the same operation mode. Type air conditioner.
室内機を停止した際前記第二膨張弁を、または前記第二
室内機を暖房運転し、前記第一室内機を停止した際前記
第一膨張弁をそれぞれ所定周期で開閉し、冷媒の寝込み
を防止してなることを特徴とする請求項１に記載の多室
形空気調和機。3. The heating operation of the first indoor unit and the heating operation of the second expansion valve or the second indoor unit when the second indoor unit is stopped, and the first indoor unit is stopped. 2. The multi-room air conditioner according to claim 1, wherein the first expansion valves are opened and closed at predetermined intervals to prevent refrigerant from stagnation.
特徴とする請求項１に記載の多室形空気調和機。4. The multi-room air conditioner according to claim 1, wherein an electromagnetic valve is used as the on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36076199A JP2001174089A (en) | 1999-12-20 | 1999-12-20 | Multiple-chamber-type air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36076199A JP2001174089A (en) | 1999-12-20 | 1999-12-20 | Multiple-chamber-type air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001174089A true JP2001174089A (en) | 2001-06-29 |
Family
ID=18470810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36076199A Pending JP2001174089A (en) | 1999-12-20 | 1999-12-20 | Multiple-chamber-type air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001174089A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091638A1 (en) * | 2002-04-23 | 2003-11-06 | Vai Holdings, Llc | Variable capacity refrigeration system with a single-frequency compressor |
| CN103591732A (en) * | 2013-10-23 | 2014-02-19 | Tcl空调器(中山)有限公司 | Air-conditioning system |
| US11578898B2 (en) * | 2019-03-27 | 2023-02-14 | Lg Electronics Inc. | Air conditioning apparatus |
| WO2024154323A1 (en) * | 2023-01-20 | 2024-07-25 | 三菱電機株式会社 | Refrigeration cycle device |
-
1999
- 1999-12-20 JP JP36076199A patent/JP2001174089A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091638A1 (en) * | 2002-04-23 | 2003-11-06 | Vai Holdings, Llc | Variable capacity refrigeration system with a single-frequency compressor |
| CN103591732A (en) * | 2013-10-23 | 2014-02-19 | Tcl空调器(中山)有限公司 | Air-conditioning system |
| US11578898B2 (en) * | 2019-03-27 | 2023-02-14 | Lg Electronics Inc. | Air conditioning apparatus |
| WO2024154323A1 (en) * | 2023-01-20 | 2024-07-25 | 三菱電機株式会社 | Refrigeration cycle device |
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