JPWO2016071950A1 - Air conditioning system - Google Patents

Air conditioning system Download PDF

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JPWO2016071950A1
JPWO2016071950A1 JP2016557367A JP2016557367A JPWO2016071950A1 JP WO2016071950 A1 JPWO2016071950 A1 JP WO2016071950A1 JP 2016557367 A JP2016557367 A JP 2016557367A JP 2016557367 A JP2016557367 A JP 2016557367A JP WO2016071950 A1 JPWO2016071950 A1 JP WO2016071950A1
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air
heat exchanger
indoor heat
indoor
refrigerant
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JP6448658B2 (en
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守 濱田
守 濱田
史人 竹内
史人 竹内
草太 小前
草太 小前
有澤　浩一
浩一 有澤
裕次 ▲高▼山
裕次 ▲高▼山
隼一郎 尾屋
隼一郎 尾屋
貴也 下川
貴也 下川
中村　伸
伸 中村
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices

Abstract

空気調和システム１００は、第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４を有する冷凍サイクル回路２０と、第１室内熱交換器１２及び第２室内熱交換器１３が収納された全館空調用室内機１と、第３室内熱交換器１４が収納された個別空調用室内機２と、第２室内熱交換器１３へ冷媒が流れる流路又は第３室内熱交換器１４へ冷媒が流れる流路に冷媒流路を切り替える冷媒流路切替装置１５と、を備える。The air conditioning system 100 includes a refrigeration cycle circuit 20 having a first indoor heat exchanger 12, a second indoor heat exchanger 13, and a third indoor heat exchanger 14, and a first indoor heat exchanger 12 and a second indoor heat exchange. The indoor air conditioning indoor unit 1 in which the cooler 13 is housed, the individual air conditioning indoor unit 2 in which the third indoor heat exchanger 14 is housed, and a flow path or third room in which the refrigerant flows to the second indoor heat exchanger 13 A refrigerant flow switching device 15 that switches the refrigerant flow path to the flow path through which the refrigerant flows to the heat exchanger 14.

Description

本発明は、空気調和システムに関するものである。   The present invention relates to an air conditioning system.

従来、複数の空調空間（部屋等）の空気を一箇所（以下、共用空間という）に集めて冷却又は加熱し、共用空間と各空調空間とを接続するダクト等の通風路を介して冷却又は加熱後の空気を供給することで、各空調空間を空調する全館空調システムが提案されている。   Conventionally, air in a plurality of air-conditioned spaces (rooms, etc.) is collected in one place (hereinafter referred to as a common space), cooled or heated, and cooled or ventilated via a ventilation path such as a duct connecting the common space and each air-conditioned space. A whole-building air conditioning system that air-conditions each air-conditioned space by supplying heated air has been proposed.

また、従来の全館空調システムには、冷凍サイクル回路を備えたものも提案されている。このような冷凍サイクル回路は、圧縮機、四方弁、室外熱交換器、膨張装置及び室内熱交換器で構成されている。そして、冷凍サイクル回路内には、冷媒が充填されている。   Moreover, what was provided with the refrigerating cycle circuit is proposed in the conventional whole building air conditioning system. Such a refrigeration cycle circuit includes a compressor, a four-way valve, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger. The refrigeration cycle circuit is filled with a refrigerant.

冷凍サイクル回路を備えた従来の全館空調システムは、各空調空間を空調する際、以下のように動作する。   A conventional entire building air conditioning system including a refrigeration cycle circuit operates as follows when air-conditioning each air-conditioned space.

各空調空間を冷房する場合、圧縮機で圧縮された冷媒は、高温高圧のガス冷媒となり、室外熱交換器に送り込まれる。室外熱交換器に流れ込んだ冷媒は、空気に熱を放出することで液化する。液化した冷媒は、膨張装置で減圧されて気液二相状態となり、室内熱交換器にて共用空間の空気から熱を吸収することで（空気を冷却することで）ガス化する。ガス化した冷媒は圧縮機に戻る。一方で、室内熱交換器にて冷却された空気は、通風路を介して各空調空間に供給される。これにより、各空調空間を冷房することが可能となる。   When cooling each air-conditioned space, the refrigerant compressed by the compressor becomes a high-temperature and high-pressure gas refrigerant and is sent to the outdoor heat exchanger. The refrigerant flowing into the outdoor heat exchanger is liquefied by releasing heat to the air. The liquefied refrigerant is decompressed by the expansion device to be in a gas-liquid two-phase state, and is gasified by absorbing heat from the air in the common space by the indoor heat exchanger (by cooling the air). The gasified refrigerant returns to the compressor. On the other hand, the air cooled by the indoor heat exchanger is supplied to each air-conditioned space through the ventilation path. Thereby, it becomes possible to cool each air-conditioned space.

各空調空間を暖房する場合、圧縮機で圧縮された冷媒は、高温高圧のガス冷媒となり、室内熱交換器に送り込まれる。室内熱交換器に流れ込んだ冷媒は、共用空間の空気に熱を放出することで（空気を加熱することで）液化する。液化した冷媒は、膨張装置で減圧されて気液二相状態となり、室外熱交換器にて周囲空気から熱を吸収することでガス化する。ガス化した冷媒は圧縮機に戻る。一方で、室内熱交換器にて加熱された空気は、通風路を介して各空調空間に供給される。これにより、各空調空間を暖房することが可能となる。   When heating each air-conditioned space, the refrigerant compressed by the compressor becomes a high-temperature and high-pressure gas refrigerant and is sent to the indoor heat exchanger. The refrigerant flowing into the indoor heat exchanger is liquefied by releasing heat to the air in the common space (by heating the air). The liquefied refrigerant is decompressed by the expansion device to be in a gas-liquid two-phase state, and is gasified by absorbing heat from ambient air in the outdoor heat exchanger. The gasified refrigerant returns to the compressor. On the other hand, the air heated by the indoor heat exchanger is supplied to each air-conditioned space through the ventilation path. Thereby, it becomes possible to heat each air-conditioned space.

また、従来の全館空調システムには、各空調空間において要望に合った空調を実現するため、各空調空間に対応して、共用空間から各空調空間に供給する空気の量を調節する通気手段を設けたものも提案されている（例えば、特許文献１）。   In addition, the conventional whole building air conditioning system has ventilation means for adjusting the amount of air supplied from the common space to each air-conditioned space corresponding to each air-conditioned space in order to realize air conditioning that meets the demand in each air-conditioned space. A provided one has also been proposed (for example, Patent Document 1).

特開平９−０７９６４８号公報JP-A-9-079648

上述のように、従来の全館空調システムは、一カ所（共用空間）で冷却又は加熱した空気を各空調空間に分配する構成となっている。しかしながら、このようなやり方では、例えばリビング及びリビングダイニングキッチン等の負荷変動が大きい空調空間において、空調能力を集中させることが困難であった。このため、従来の全館空調システムは、負荷変動が大きい空調空間において、室内温度が設定温度（室内の目標温度）から離れてしまい、快適性が低下してしまうという課題があった。   As described above, the conventional whole building air conditioning system is configured to distribute the air cooled or heated in one place (shared space) to each air conditioning space. However, with such a method, it is difficult to concentrate the air conditioning capability in an air conditioned space with a large load fluctuation such as a living room and a living dining kitchen. For this reason, the conventional whole-building air conditioning system has a problem that in an air-conditioned space with a large load fluctuation, the indoor temperature is far from the set temperature (the indoor target temperature), and the comfort is lowered.

本発明は、上述のような課題を解決するためになされたものであり、全館空調において負荷変動が大きい空調空間（リビング及びリビングダイニングキッチン等）で空調負荷が大きくなった場合でも、当該空調空間の快適性の低下を抑制することが可能な空気調和システムを提供することを目的とする。   The present invention has been made to solve the above-described problems, and even when the air conditioning load becomes large in an air conditioning space (living room, living dining kitchen, etc.) with large load fluctuation in the entire building air conditioning, the air conditioning space is concerned. An object of the present invention is to provide an air conditioning system capable of suppressing a decrease in comfort.

本発明に係る空気調和システムは、圧縮機、室外熱交換器、膨張装置、第１室内熱交換器、第２室内熱交換器及び第３室内熱交換器を有し、前記第１室内熱交換器、前記第２室内熱交換器及び前記第３室内熱交換器に供給された冷媒で空気を冷却又は加熱する冷凍サイクル回路と、前記第１室内熱交換器及び前記第２室内熱交換器が収納された第１室内機と、前記第３室内熱交換器が収納された第２室内機と、を備え、前記第１室内機は、通風路を介して複数の空調空間と連通する共用空間に設けられるものであり、前記第２室内機は、複数の前記空調空間の少なくとも１つに設けられるものであり、前記冷凍サイクル回路は、さらに、前記第２室内熱交換器へ冷媒が流れる流路又は前記第３室内熱交換器へ冷媒が流れる流路に冷媒流路を切り替える冷媒流路切替装置を有するものである。   An air conditioning system according to the present invention includes a compressor, an outdoor heat exchanger, an expansion device, a first indoor heat exchanger, a second indoor heat exchanger, and a third indoor heat exchanger, and the first indoor heat exchange. A refrigeration cycle circuit that cools or heats air with a refrigerant supplied to the second indoor heat exchanger and the third indoor heat exchanger, the first indoor heat exchanger, and the second indoor heat exchanger A common space that includes a stored first indoor unit and a second indoor unit in which the third indoor heat exchanger is stored, and the first indoor unit communicates with a plurality of air-conditioned spaces through a ventilation path. The second indoor unit is provided in at least one of the plurality of air-conditioned spaces, and the refrigeration cycle circuit further includes a flow of refrigerant to the second indoor heat exchanger. Cut the refrigerant flow path into the flow path or the flow path through which the refrigerant flows to the third indoor heat exchanger. And has a refrigerant flow switching device changing.

本発明に係る空気調和システムにおいては、第１室内機が、共用空間の空気、つまり、各空調空間へ供給される空気を冷却又は加熱する全館空調用室内機となる。また、第２室内機が、当該第２室内機が設置された空調空間の空気を直接冷却又は加熱する個別空調用室内機となる。このため、本発明に係る空気調和システムは、第３室内熱交換器へ冷媒が流れる流路に冷媒流路切替装置を切り替えることにより、第２室内機が設置された空調空間の空気を個別に冷却又は加熱することができる。このため、本発明に係る空気調和システムは、負荷変動が大きい空調空間（リビング及びリビングダイニングキッチン等）に第２室内機を設置することにより、当該空調空間の空調負荷が大きくなった場合でも、当該空調空間を急速冷房又は急速暖房することが可能となる。したがって、本発明に係る空気調和システムは、空調空間で空調負荷が大きくなった場合でも、当該空調空間の快適性の低下を抑制することができる。   In the air conditioning system according to the present invention, the first indoor unit is an indoor air conditioning unit that cools or heats the air in the common space, that is, the air supplied to each air conditioning space. The second indoor unit is an individual air conditioning indoor unit that directly cools or heats the air in the air-conditioned space in which the second indoor unit is installed. For this reason, the air conditioning system according to the present invention individually switches the air in the air-conditioned space in which the second indoor unit is installed by switching the refrigerant flow switching device to the flow path through which the refrigerant flows to the third indoor heat exchanger. It can be cooled or heated. For this reason, even if the air conditioning system according to the present invention installs the second indoor unit in an air conditioned space (living room and living dining kitchen etc.) with a large load fluctuation, It becomes possible to rapidly cool or rapidly heat the air-conditioned space. Therefore, the air conditioning system according to the present invention can suppress a decrease in comfort of the air-conditioned space even when the air-conditioning load increases in the air-conditioned space.

本発明の実施の形態に係る空気調和システムの概略図である。It is the schematic of the air conditioning system which concerns on embodiment of this invention. 本発明の実施の形態に係る空気調和システムの冷凍サイクル回路を示す冷媒回路図である。It is a refrigerant circuit diagram which shows the refrigerating cycle circuit of the air conditioning system which concerns on embodiment of this invention. 本発明の実施の形態に係る空気調和システムが全館空調のみを行っている状態を示す動作図である。It is an operation | movement figure which shows the state in which the air conditioning system which concerns on embodiment of this invention is performing only the whole building air conditioning. 本発明の実施の形態に係る空気調和システムが全館空調及び個別空調を行っている状態を示す動作図である。It is an operation figure showing the state where the air harmony system concerning an embodiment of the invention is performing whole building air conditioning and individual air conditioning. 本発明の実施の形態に係る空気調和システムの冷媒流路切替装置の制御を示すフローチャートである。It is a flowchart which shows control of the refrigerant | coolant flow path switching apparatus of the air conditioning system which concerns on embodiment of this invention. 本発明の実施の形態に係る空気調和システムの冷凍サイクル回路の別の一例を示す冷媒回路図である。It is a refrigerant circuit figure which shows another example of the refrigerating cycle circuit of the air conditioning system which concerns on embodiment of this invention. 本発明の実施の形態に係る空気調和システム動作状態の一例を示す動作図である。It is an operation | movement figure which shows an example of the air conditioning system operation state which concerns on embodiment of this invention. 本発明の実施の形態に係る空気調和システムの別の一例の概略図である。It is the schematic of another example of the air conditioning system which concerns on embodiment of this invention.

実施の形態．
図１は、本発明の実施の形態に係る空気調和システムの概略図である。
ここで、本実施の形態では、図１に示すように、３つの空調空間２０２〜２０４を有する建物に、本実施の形態に係る空気調和システム１００を設置した例を説明する。また、本実施の形態では、図１に示すように、空調空間２０２〜２０４と共用空間２０１とを連通する通風路として、ダクト２０５を用いた例について説明する。しかしながら、本実施の形態に係る空気調和システム１００が設置される建物は、図１に示すものに限定されない。例えば、２つの空調空間を有する建物、及び、４つ以上の空調空間を有する建物に、本実施の形態に係る空気調和システム１００を設置してもよい。また例えば、共用空間２０１と空調空間２０２〜２０４とを隔てる壁又はドアに形成された開口部及びガラリ等を、通風路として用いてもよい。
なお、共用空間２０１は、例えば、建物の床下及び天井裏等の空間である。また、空調空間２０２〜２０４は、例えば、建物に設けられた各部屋である。Embodiment.
FIG. 1 is a schematic diagram of an air conditioning system according to an embodiment of the present invention.
Here, in the present embodiment, as shown in FIG. 1, an example in which the air conditioning system 100 according to the present embodiment is installed in a building having three air-conditioned spaces 202 to 204 will be described. Moreover, in this Embodiment, as shown in FIG. 1, the example which used the duct 205 as a ventilation path which connects the air-conditioning space 202-204 and the shared space 201 is demonstrated. However, the building where the air conditioning system 100 according to the present embodiment is installed is not limited to that shown in FIG. For example, the air conditioning system 100 according to the present embodiment may be installed in a building having two air-conditioned spaces and a building having four or more air-conditioned spaces. Further, for example, an opening formed in a wall or door that separates the common space 201 and the air-conditioned spaces 202 to 204, a louver, or the like may be used as the ventilation path.
The common space 201 is, for example, a space such as a floor under a building or a ceiling. The air-conditioned spaces 202 to 204 are, for example, rooms provided in a building.

本実施の形態に係る空気調和システムは、冷凍サイクル回路２０、全館空調用室内機１及び個別空調用室内機２等を備えている。詳細は後述するが、冷凍サイクル回路２０は、冷媒配管１８で室外機３と接続された第１室内熱交換器１２、第２室内熱交換器１３、第３室内熱交換器１４及び冷媒流路切替装置１５等を備えている。第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４は、供給された冷媒で周囲の空気を冷却又は加熱するものである。冷媒流路切替装置１５は、室外機３から供給される冷媒の流路を、第２室内熱交換器１３へ冷媒が流れる流路又は第３室内熱交換器１４へ冷媒が流れる流路に切り替えるものである。   The air conditioning system according to the present embodiment includes a refrigeration cycle circuit 20, a whole-building air conditioning indoor unit 1, an individual air conditioning indoor unit 2, and the like. Although details will be described later, the refrigeration cycle circuit 20 includes a first indoor heat exchanger 12, a second indoor heat exchanger 13, a third indoor heat exchanger 14, and a refrigerant flow path that are connected to the outdoor unit 3 through a refrigerant pipe 18. A switching device 15 and the like are provided. The 1st indoor heat exchanger 12, the 2nd indoor heat exchanger 13, and the 3rd indoor heat exchanger 14 cool or heat surrounding air with the supplied refrigerant. The refrigerant flow switching device 15 switches the flow path of the refrigerant supplied from the outdoor unit 3 to a flow path through which the refrigerant flows to the second indoor heat exchanger 13 or a flow path through which the refrigerant flows to the third indoor heat exchanger 14. Is.

全館空調用室内機１は、第１室内熱交換器１２及び第２室内熱交換器１３を収納するものである。この全館空調用室内機１は、共用空間２０１に設けられている。つまり、全館空調用室内機１は、第１室内熱交換器１２及び第２室内熱交換器１３で、共用空間２０１の空気、つまり、ダクト２０５を介して共用空間２０１から空調空間２０２〜２０４へ供給される空気を冷却又は加熱するものである。個別空調用室内機２は、第３室内熱交換器１４を収容するものである。この個別空調用室内機２は、リビング及びリビングダイニングキッチン等のような、負荷変動が大きい空調空間２０４に設けられている。つまり、個別空調用室内機２は、空調空間２０４の空気を個別に冷却又は加熱するものである。
ここで、全館空調用室内機１が、本発明の第１室内機に相当する。個別空調用室内機２が、本発明の第２室内機に相当する。また、空調空間２０４が、本発明の個別空調空間に相当する。The entire building air conditioning indoor unit 1 houses a first indoor heat exchanger 12 and a second indoor heat exchanger 13. This whole-building air conditioning indoor unit 1 is provided in the common space 201. That is, the indoor air conditioning indoor unit 1 includes the first indoor heat exchanger 12 and the second indoor heat exchanger 13, and the air in the common space 201, that is, from the common space 201 to the air conditioned spaces 202 to 204 via the duct 205. The supplied air is cooled or heated. The individual indoor unit 2 for air conditioning accommodates the third indoor heat exchanger 14. The individual air conditioning indoor unit 2 is provided in an air conditioned space 204 having a large load fluctuation, such as a living room and a living dining kitchen. That is, the individual air conditioning indoor unit 2 cools or heats the air in the air-conditioned space 204 individually.
Here, the entire building air conditioning indoor unit 1 corresponds to the first indoor unit of the present invention. The individual air conditioning indoor unit 2 corresponds to the second indoor unit of the present invention. The air-conditioned space 204 corresponds to the individual air-conditioned space of the present invention.

また、本実施の形態に係る空気調和システム１００は、冷媒流路切替装置１５を自動的に切り替えられるように、温度検出装置３６及び制御装置５０を備えている。温度検出装置３６は、個別空調用室内機２が設けられた空調空間２０４に設けられ、空調空間２０４の温度を検出するものである。制御装置５０は、例えばマイコン等で構成されて冷媒流路切替装置１５を制御するものであり、記憶部５１及び制御部５２を備えている。記憶部５１は、空調空間２０４の設定温度（室内の目標温度）を記憶するものである。制御部５２は、冷媒流路切替装置１５の切り替えを制御するものである。詳しくは、制御装置５０の制御部５２は、設定温度と温度検出装置３６の検出温度との差である比較値が閾値以下の場合、第２室内熱交換器１３へ冷媒が流れる流路となるように冷媒流路切替装置１５を制御する。また、制御装置５０の制御部５２は、設定温度と温度検出装置３６の検出温度との差である比較値が閾値より大きい場合、第３室内熱交換器１４へ冷媒が流れる流路となるように、冷媒流路切替装置１５を制御する。なお、この閾値は、記憶部５１に記憶されている。   In addition, the air conditioning system 100 according to the present embodiment includes a temperature detection device 36 and a control device 50 so that the refrigerant flow switching device 15 can be automatically switched. The temperature detection device 36 is provided in the conditioned space 204 where the individual air conditioning indoor unit 2 is provided, and detects the temperature of the conditioned space 204. The control device 50 is configured by, for example, a microcomputer and controls the refrigerant flow switching device 15, and includes a storage unit 51 and a control unit 52. The memory | storage part 51 memorize | stores the preset temperature (indoor target temperature) of the air-conditioning space 204. FIG. The controller 52 controls switching of the refrigerant flow switching device 15. Specifically, the control unit 52 of the control device 50 becomes a flow path through which the refrigerant flows to the second indoor heat exchanger 13 when the comparison value that is the difference between the set temperature and the detected temperature of the temperature detection device 36 is equal to or less than the threshold value. Thus, the refrigerant flow switching device 15 is controlled. Moreover, the control part 52 of the control apparatus 50 becomes a flow path through which a refrigerant | coolant flows into the 3rd indoor heat exchanger 14, when the comparison value which is a difference of preset temperature and the detection temperature of the temperature detection apparatus 36 is larger than a threshold value. Next, the refrigerant flow switching device 15 is controlled. This threshold value is stored in the storage unit 51.

さらに、本実施の形態に係る空気調和システム１００は、共用空間２０１から各空調空間２０２〜２０４に供給する空気の量を調整するため、空調空間２０２〜２０４に対応して設けられた風量可変装置３１〜３３を備えている。本実施の形態では、ダクト２０５の一方の端部が分岐して各空調空間２０２〜２０４と接続されており、これら分岐部分に風量可変装置３１〜３３が設けられている。風量可変装置３１〜３３は、例えば、風量可変装置３１〜３３に形成された内部流路を開閉自在に覆う閉塞部材を有しており、当該内部流路の閉塞量を変更することで、各空調空間２０２〜２０４に供給する空気の量を調整できる構成となっている。これにより、全館空調時、各空調空間２０２〜２０４において要望に合った空調を実現することができる。
なお、風量可変装置３１〜３３は、空調空間２０２〜２０４に対応して設けられていれば、その設置位置は任意である。Furthermore, the air conditioning system 100 according to the present embodiment adjusts the amount of air supplied from the common space 201 to each of the air-conditioned spaces 202 to 204, so that the air volume variable device provided corresponding to the air-conditioned spaces 202 to 204 is provided. 31-33. In the present embodiment, one end of the duct 205 is branched and connected to each of the air-conditioned spaces 202 to 204, and the air volume varying devices 31 to 33 are provided at these branched portions. The air volume variable devices 31 to 33 have, for example, a closing member that covers the internal flow path formed in the air volume variable devices 31 to 33 so as to be freely opened and closed. The amount of air supplied to the conditioned spaces 202 to 204 can be adjusted. Thereby, the air conditioning according to a request | requirement is realizable in each air conditioned space 202-204 at the time of whole building air conditioning.
In addition, if the air volume varying devices 31 to 33 are provided corresponding to the air-conditioned spaces 202 to 204, their installation positions are arbitrary.

本実施の形態では、制御装置５０の制御部５２が風量可変装置３１〜３３を制御する。詳しくは、制御部５２は、各空調空間２０２〜２０４の設定温度と室内温度との差に基づいて、風量可変装置３１〜３３を制御する。例えば、各空調空間２０２〜２０４の設定温度と室内温度との差が大きいほど、共用空間２０１から各空調空間２０２〜２０４に供給する空気の量を多くする。このため、本実施の形態に係る空気調和システム１００は、空調空間２０２，２０３の温度を検出する温度検出装置３４，３５を備えている。また、制御装置５０の記憶部５１は、空調空間２０２，２０３の設定温度を記憶できる構成となっている。   In the present embodiment, the control unit 52 of the control device 50 controls the air volume variable devices 31 to 33. Specifically, the control unit 52 controls the air volume variable devices 31 to 33 based on the difference between the set temperature of each of the air-conditioned spaces 202 to 204 and the room temperature. For example, as the difference between the set temperature of each air-conditioned space 202 to 204 and the room temperature is larger, the amount of air supplied from the shared space 201 to each air-conditioned space 202 to 204 is increased. For this reason, the air conditioning system 100 according to the present embodiment includes temperature detection devices 34 and 35 that detect the temperatures of the air-conditioned spaces 202 and 203. In addition, the storage unit 51 of the control device 50 is configured to store the set temperatures of the air-conditioned spaces 202 and 203.

図２は、本発明の実施の形態に係る空気調和システムの冷凍サイクル回路を示す冷媒回路図である。
本実施の形態に係る冷凍サイクル回路２０は、圧縮機１０、室外熱交換器１１、膨張装置１７、第１室内熱交換器１２、第２室内熱交換器１３、第３室内熱交換器１４及び冷媒流路切替装置１５を備えている。また、本実施の形態に係る冷凍サイクル回路２０は、空気調和システム１００において冷房及び暖房の双方を実現するため、四方弁１６も備えている。FIG. 2 is a refrigerant circuit diagram illustrating a refrigeration cycle circuit of the air-conditioning system according to the embodiment of the present invention.
The refrigeration cycle circuit 20 according to the present embodiment includes a compressor 10, an outdoor heat exchanger 11, an expansion device 17, a first indoor heat exchanger 12, a second indoor heat exchanger 13, a third indoor heat exchanger 14, and A refrigerant flow switching device 15 is provided. The refrigeration cycle circuit 20 according to the present embodiment also includes a four-way valve 16 in order to realize both cooling and heating in the air conditioning system 100.

圧縮機１０は、冷媒を吸入し、その冷媒を圧縮して高温高圧の状態にするものである。圧縮機１０の種類は特に限定されるものではなく、例えば、レシプロ、ロータリー、スクロール又はスクリュー等の各種タイプの圧縮機構を用いて圧縮機１０を構成することができる。圧縮機１０は、インバーター等により回転数が可変に制御可能なタイプのもので構成するとよい。この圧縮機１０の吐出口及び吸入口には、四方弁１６が接続されている。   The compressor 10 sucks refrigerant and compresses the refrigerant to a high temperature and high pressure state. The kind of the compressor 10 is not specifically limited, For example, the compressor 10 can be comprised using various types of compression mechanisms, such as a reciprocating, a rotary, a scroll, or a screw. The compressor 10 may be of a type that can be variably controlled by an inverter or the like. A four-way valve 16 is connected to the discharge port and the suction port of the compressor 10.

四方弁１６は、圧縮機１０の吐出口の接続先を室外熱交換器１１又は室内熱交換器（第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４）の一方に切り替え、圧縮機１０の吸入口を室外熱交換器１１又は室内熱交換器（第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４）の他方に切り替えるものである。   The four-way valve 16 connects the discharge port of the compressor 10 to the outdoor heat exchanger 11 or the indoor heat exchanger (the first indoor heat exchanger 12, the second indoor heat exchanger 13, and the third indoor heat exchanger 14). To the other of the outdoor heat exchanger 11 or the indoor heat exchanger (the first indoor heat exchanger 12, the second indoor heat exchanger 13, and the third indoor heat exchanger 14). It is to switch.

室外熱交換器１１は、内部を流れる冷媒と室外空気とを熱交換させる空気式熱交換器である。室外熱交換器１１の周辺に、熱交換対象である室外空気を室外熱交換器１１に供給する室外送風機を設けるとよい。この室外熱交換器１１は、膨張装置１７を介して、第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４と接続されている。   The outdoor heat exchanger 11 is an air heat exchanger that exchanges heat between refrigerant flowing inside and outdoor air. An outdoor fan that supplies outdoor air to be heat exchanged to the outdoor heat exchanger 11 may be provided around the outdoor heat exchanger 11. The outdoor heat exchanger 11 is connected to the first indoor heat exchanger 12, the second indoor heat exchanger 13, and the third indoor heat exchanger 14 via an expansion device 17.

膨張装置１７は、例えば膨張弁であり、冷媒を減圧して膨張させるものである。   The expansion device 17 is an expansion valve, for example, and expands the refrigerant by decompressing it.

第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４は、内部を流れる冷媒と周囲空気とを熱交換させる空気式熱交換器である。第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４の周辺に、熱交換対象である室内空気を第１室内熱交換器１２、第２室内熱交換器１３及び第３室内熱交換器１４に供給する室内送風機を設けるとよい。   The first indoor heat exchanger 12, the second indoor heat exchanger 13, and the third indoor heat exchanger 14 are pneumatic heat exchangers that exchange heat between the refrigerant flowing inside and the ambient air. Around the first indoor heat exchanger 12, the second indoor heat exchanger 13, and the third indoor heat exchanger 14, the indoor air to be heat exchanged is transferred to the first indoor heat exchanger 12 and the second indoor heat exchanger 13. And it is good to provide the indoor air blower supplied to the 3rd indoor heat exchanger 14.

冷媒流路切替装置１５は、上述のように、室外機３から供給される冷媒の流路を、第２室内熱交換器１３へ冷媒が流れる流路又は第３室内熱交換器１４へ冷媒が流れる流路に切り替えるものである。   As described above, the refrigerant flow switching device 15 uses the flow path of the refrigerant supplied from the outdoor unit 3, the flow path of the refrigerant to the second indoor heat exchanger 13, or the refrigerant to the third indoor heat exchanger 14. The flow channel is switched.

圧縮機１０の駆動、停止及び回転数は、制御装置５０の制御部５２で制御される。また、四方弁１６の流路切り替えも、制御装置５０の制御部５２で制御される。   The drive, stop, and rotation speed of the compressor 10 are controlled by the control unit 52 of the control device 50. The flow path switching of the four-way valve 16 is also controlled by the control unit 52 of the control device 50.

上述の冷凍サイクル回路２０の各構成要素は、全館空調用室内機１、個別空調用室内機２及び室外機３に収納されている。詳しくは、全館空調用室内機１には、第１室内熱交換器１２及び第２室内熱交換器１３が収納されている。個別空調用室内機２には、第３室内熱交換器１４が収納されている。また、室外機３には、圧縮機１０、室外熱交換器１１、四方弁１６及び膨張装置１７が収納されている。冷媒流路切替装置１５の設置位置は、任意である。冷媒流路切替装置１５は、例えば、全館空調用室内機１に収納されてもよいし、個別空調用室内機２に収納されてもよいし、室外機３に収納されてもよい。   Each component of the refrigeration cycle circuit 20 described above is housed in the indoor air conditioning indoor unit 1, the individual air conditioning indoor unit 2, and the outdoor unit 3. Specifically, the indoor air conditioning indoor unit 1 houses a first indoor heat exchanger 12 and a second indoor heat exchanger 13. A third indoor heat exchanger 14 is accommodated in the individual air conditioning indoor unit 2. Further, the outdoor unit 3 houses a compressor 10, an outdoor heat exchanger 11, a four-way valve 16, and an expansion device 17. The installation position of the refrigerant flow switching device 15 is arbitrary. For example, the refrigerant flow switching device 15 may be stored in the indoor air conditioning indoor unit 1, may be stored in the individual air conditioning indoor unit 2, or may be stored in the outdoor unit 3.

［動作説明］
次に、空気調和システム１００の動作について説明する。[Description of operation]
Next, the operation of the air conditioning system 100 will be described.

［全館空調のみ］
図３は、本発明の実施の形態に係る空気調和システムが全館空調のみを行っている状態を示す動作図である。
以下、図３及び上述の図２を用いて、空気調和システム１００が全館空調のみを行う場合について説明する。[Entire air conditioning only]
FIG. 3 is an operation diagram showing a state in which the air conditioning system according to the embodiment of the present invention performs only the entire building air conditioning.
Hereinafter, the case where the air conditioning system 100 performs only the entire building air conditioning will be described with reference to FIG. 3 and FIG. 2 described above.

空気調和システム１００は、通常、図３に示すように、全館空調のみで空調空間２０２〜２０４の空調を行う。
この場合、空調空間２０２〜２０４を冷房する際には、空気調和システム１００は以下のように動作する。圧縮機１０で圧縮された冷媒は、高温高圧のガス冷媒となり、室外熱交換器１１に送り込まれる。室外熱交換器１１に流れ込んだ冷媒は、周囲空気に熱を放出することで液化する。液化した冷媒は、膨張装置１７で減圧されて気液二相状態となる。As shown in FIG. 3, the air conditioning system 100 normally air-conditions the air-conditioned spaces 202 to 204 using only the entire building air-conditioning.
In this case, when the air-conditioned spaces 202 to 204 are cooled, the air conditioning system 100 operates as follows. The refrigerant compressed by the compressor 10 becomes a high-temperature and high-pressure gas refrigerant and is sent to the outdoor heat exchanger 11. The refrigerant flowing into the outdoor heat exchanger 11 is liquefied by releasing heat to the ambient air. The liquefied refrigerant is decompressed by the expansion device 17 and becomes a gas-liquid two-phase state.

全館空調のみを行う場合、冷媒流路切替装置１５は、第２室内熱交換器１３へ冷媒が流れる流路に切り替えられる。このため、膨張装置１７で減圧されて気液二相状態となった冷媒は、第１室内熱交換器１２及び第２室内熱交換器１３に流入し、共用空間２０１の空気から熱を吸収することで（空気を冷却することで）ガス化する。ガス化した冷媒は圧縮機１０に戻る。一方で、第１室内熱交換器１２及び第２室内熱交換器１３にて冷却された共用空間２０１の空気は、図３に白抜き矢印で示すように、ダクト２０５を介して各空調空間２０２〜２０４に供給される。これにより、各空調空間２０２〜２０４を冷房することが可能となる。なお、各空調空間２０２〜２０４に供給される空気は、風量可変装置３１〜３３により、各空調空間２０２〜２０４の設定温度と室内温度との差に応じた量に調整される。   When only the entire building air conditioning is performed, the refrigerant flow switching device 15 is switched to the flow path through which the refrigerant flows to the second indoor heat exchanger 13. For this reason, the refrigerant that has been decompressed by the expansion device 17 and is in a gas-liquid two-phase state flows into the first indoor heat exchanger 12 and the second indoor heat exchanger 13 and absorbs heat from the air in the shared space 201. Gasification (by cooling the air). The gasified refrigerant returns to the compressor 10. On the other hand, the air in the common space 201 cooled by the first indoor heat exchanger 12 and the second indoor heat exchanger 13 passes through the duct 205 as shown in FIG. To 204. Thereby, it becomes possible to cool each air-conditioned space 202-204. The air supplied to each of the air-conditioned spaces 202 to 204 is adjusted to an amount corresponding to the difference between the set temperature of each of the air-conditioned spaces 202 to 204 and the room temperature by the air volume variable devices 31 to 33.

また、全館空調のみで空調空間２０２〜２０４を暖房する際には、空気調和システム１００は以下のように動作する。圧縮機１０で圧縮された冷媒は、高温高圧のガス冷媒となる。ここで、上述のように、全館空調のみを行う場合、冷媒流路切替装置１５は、第２室内熱交換器１３へ冷媒が流れる流路に切り替えられる。このため、圧縮機１０で圧縮された高温高圧のガス冷媒は、第１室内熱交換器１２及び第２室内熱交換器１３に送り込まれる。第１室内熱交換器１２及び第２室内熱交換器１３に流れ込んだ冷媒は、共用空間２０１の空気に熱を放出することで（空気を加熱することで）液化する。液化した冷媒は、膨張装置１７で減圧されて気液二相状態となり、室外熱交換器１１にて周囲空気から熱を吸収することでガス化する。ガス化した冷媒は圧縮機１０に戻る。一方で、第１室内熱交換器１２及び第２室内熱交換器１３にて加熱された共用空間２０１の空気は、図３に白抜き矢印で示すように、ダクト２０５を介して各空調空間２０２〜２０４に供給される。これにより、各空調空間２０２〜２０４を暖房することが可能となる。なお、各空調空間２０２〜２０４に供給される空気は、風量可変装置３１〜３３により、各空調空間２０２〜２０４の設定温度と室内温度との差に応じた量に調整される。   In addition, when the air-conditioned spaces 202 to 204 are heated only by the entire building air conditioning, the air conditioning system 100 operates as follows. The refrigerant compressed by the compressor 10 becomes a high-temperature and high-pressure gas refrigerant. Here, as described above, when only the entire building air conditioning is performed, the refrigerant flow switching device 15 is switched to the flow path through which the refrigerant flows to the second indoor heat exchanger 13. For this reason, the high-temperature and high-pressure gas refrigerant compressed by the compressor 10 is sent to the first indoor heat exchanger 12 and the second indoor heat exchanger 13. The refrigerant that has flowed into the first indoor heat exchanger 12 and the second indoor heat exchanger 13 is liquefied by releasing heat to the air in the shared space 201 (by heating the air). The liquefied refrigerant is decompressed by the expansion device 17 to be in a gas-liquid two-phase state, and is gasified by absorbing heat from ambient air in the outdoor heat exchanger 11. The gasified refrigerant returns to the compressor 10. On the other hand, the air in the common space 201 heated by the first indoor heat exchanger 12 and the second indoor heat exchanger 13 passes through each duct 202 as shown by a white arrow in FIG. To 204. Thereby, it becomes possible to heat each air-conditioned space 202-204. The air supplied to each of the air-conditioned spaces 202 to 204 is adjusted to an amount corresponding to the difference between the set temperature of each of the air-conditioned spaces 202 to 204 and the room temperature by the air volume variable devices 31 to 33.

［全館空調＋個別空調］
図４は、本発明の実施の形態に係る空気調和システムが全館空調及び個別空調を行っている状態を示す動作図である。
以下、図４及び上述の図２を用いて、空気調和システム１００が全館空調のみを行う場合について説明する。[Entire air conditioning + Individual air conditioning]
FIG. 4 is an operation diagram showing a state in which the air conditioning system according to the embodiment of the present invention performs whole building air conditioning and individual air conditioning.
Hereinafter, the case where the air conditioning system 100 performs only the entire building air conditioning will be described with reference to FIG. 4 and FIG. 2 described above.

空調空間２０４は、リビング及びリビングダイニングキッチン等のような、負荷変動が大きい空調空間である。このため、人の出入り、調理時の熱等により、空調空間２０４の空調負荷が大きくなる場合がある。この場合、制御装置５０の制御部５２は、冷媒流路切替装置１５を、第３室内熱交換器１４へ冷媒が流れる流路に切り替える。上述のように、本実施の形態に係る制御装置５０の制御部５２は、設定温度と温度検出装置３６の検出温度との差である比較値が閾値より大きい場合、第３室内熱交換器１４へ冷媒が流れる流路となるように、冷媒流路切替装置１５の流路を切り替える。   The air-conditioned space 204 is an air-conditioned space with a large load fluctuation such as a living room and a living-dining kitchen. For this reason, the air-conditioning load of the air-conditioned space 204 may increase due to people coming in and out, heat during cooking, and the like. In this case, the control unit 52 of the control device 50 switches the refrigerant flow switching device 15 to a flow path through which the refrigerant flows to the third indoor heat exchanger 14. As described above, the control unit 52 of the control device 50 according to the present embodiment has the third indoor heat exchanger 14 when the comparison value that is the difference between the set temperature and the detected temperature of the temperature detecting device 36 is larger than the threshold value. The flow path of the refrigerant flow switching device 15 is switched so as to be a flow path through which the refrigerant flows.

全館空調及び個別空調によって空調空間２０２〜２０４を冷房する際には、空気調和システム１００は以下のように動作する。圧縮機１０で圧縮された冷媒は、高温高圧のガス冷媒となり、室外熱交換器１１に送り込まれる。室外熱交換器１１に流れ込んだ冷媒は、周囲空気に熱を放出することで液化する。液化した冷媒は、膨張装置１７で減圧されて気液二相状態となる。全館空調及び個別空調を行う場合、冷媒流路切替装置１５は、第３室内熱交換器１４へ冷媒が流れる流路に切り替えられる。このため、膨張装置１７で減圧されて気液二相状態となった冷媒は、第１室内熱交換器１２及び第３室内熱交換器１４に流入する。   When the air-conditioned spaces 202 to 204 are cooled by the entire building air conditioning and the individual air conditioning, the air conditioning system 100 operates as follows. The refrigerant compressed by the compressor 10 becomes a high-temperature and high-pressure gas refrigerant and is sent to the outdoor heat exchanger 11. The refrigerant flowing into the outdoor heat exchanger 11 is liquefied by releasing heat to the ambient air. The liquefied refrigerant is decompressed by the expansion device 17 and becomes a gas-liquid two-phase state. When performing the entire building air conditioning and the individual air conditioning, the refrigerant flow switching device 15 is switched to the flow path through which the refrigerant flows to the third indoor heat exchanger 14. For this reason, the refrigerant that has been decompressed by the expansion device 17 and is in a gas-liquid two-phase state flows into the first indoor heat exchanger 12 and the third indoor heat exchanger 14.

第１室内熱交換器１２に流入した気液二相状態の冷媒は、共用空間２０１の空気から熱を吸収することで（空気を冷却することで）ガス化する。ガス化した冷媒は圧縮機１０に戻る。また、第１室内熱交換器１２にて冷却された共用空間２０１の空気は、図４に白抜き矢印で示すように、ダクト２０５を介して各空調空間２０２，２０３に供給される。これにより、各空調空間２０２，２０３を冷房することが可能となる。各空調空間２０２，２０３に供給される空気は、風量可変装置３１，３２により、各空調空間２０２，２０３の設定温度と室内温度との差に応じた量に調整される。なお、本実施の形態では、風量可変装置３３を全閉にし、共用空間２０１から個別空調される空調空間２０４への空気の供給を停止している。これにより、全館空調の空調能力が不足することを抑制できる。   The gas-liquid two-phase refrigerant flowing into the first indoor heat exchanger 12 is gasified by absorbing heat from the air in the shared space 201 (by cooling the air). The gasified refrigerant returns to the compressor 10. In addition, the air in the common space 201 cooled by the first indoor heat exchanger 12 is supplied to the air-conditioned spaces 202 and 203 through the duct 205 as shown by white arrows in FIG. As a result, the air-conditioned spaces 202 and 203 can be cooled. The air supplied to the air-conditioned spaces 202 and 203 is adjusted by the air volume variable devices 31 and 32 to an amount corresponding to the difference between the set temperature of the air-conditioned spaces 202 and 203 and the room temperature. In the present embodiment, the air volume varying device 33 is fully closed, and the supply of air from the shared space 201 to the air-conditioned space 204 that is individually air-conditioned is stopped. Thereby, it can suppress that the air conditioning capability of the whole building air conditioning is insufficient.

一方、第３室内熱交換器１４へ流入した気液二相状態の冷媒は、空調空間２０４の空気から熱を吸収することで（空気を冷却することで）ガス化する。ガス化した冷媒は圧縮機１０に戻る。また、第３室内熱交換器１４で冷却された空気は、図４に白抜き矢印で示すように、再び空調空間２０４へ戻る。これにより、空調空間２０４を、各空調空間２０２，２０３とは個別に冷房することが可能となる。   On the other hand, the gas-liquid two-phase refrigerant flowing into the third indoor heat exchanger 14 is gasified by absorbing heat from the air in the air-conditioned space 204 (by cooling the air). The gasified refrigerant returns to the compressor 10. Further, the air cooled by the third indoor heat exchanger 14 returns to the conditioned space 204 again as shown by the white arrow in FIG. Thereby, the air-conditioned space 204 can be cooled separately from the air-conditioned spaces 202 and 203.

全館空調及び個別空調によって空調空間２０２〜２０４を暖房する際には、空気調和システム１００は以下のように動作する。圧縮機１０で圧縮された冷媒は、高温高圧のガス冷媒となる。ここで、上述のように、全館空調及び個別空調を行う場合、冷媒流路切替装置１５は、第３室内熱交換器１４へ冷媒が流れる流路に切り替えられる。このため、圧縮機１０で圧縮された高温高圧のガス冷媒は、第１室内熱交換器１２及び第３室内熱交換器１４に送り込まれる。   When the air-conditioned spaces 202 to 204 are heated by the entire building air conditioning and the individual air conditioning, the air conditioning system 100 operates as follows. The refrigerant compressed by the compressor 10 becomes a high-temperature and high-pressure gas refrigerant. Here, as described above, when the entire building air conditioning and the individual air conditioning are performed, the refrigerant flow switching device 15 is switched to the flow path through which the refrigerant flows to the third indoor heat exchanger 14. For this reason, the high-temperature and high-pressure gas refrigerant compressed by the compressor 10 is sent to the first indoor heat exchanger 12 and the third indoor heat exchanger 14.

第１室内熱交換器１２に流れ込んだ冷媒は、共用空間２０１の空気に熱を放出することで（空気を加熱することで）液化する。液化した冷媒は、膨張装置１７で減圧されて気液二相状態となり、室外熱交換器１１にて周囲空気から熱を吸収することでガス化する。ガス化した冷媒は圧縮機１０に戻る。また、第１室内熱交換器１２にて加熱された共用空間２０１の空気は、図４に白抜き矢印で示すように、ダクト２０５を介して各空調空間２０２，２０３に供給される。これにより、各空調空間２０２，２０３を暖房することが可能となる。各空調空間２０２，２０３に供給される空気は、風量可変装置３１，３２により、各空調空間２０２，２０３の設定温度と室内温度との差に応じた量に調整される。なお、本実施の形態では、風量可変装置３３を全閉にし、共用空間２０１から個別空調される空調空間２０４への空気の供給を停止している。これにより、全館空調の空調能力が不足することを抑制できる。   The refrigerant that has flowed into the first indoor heat exchanger 12 is liquefied by releasing heat to the air in the shared space 201 (by heating the air). The liquefied refrigerant is decompressed by the expansion device 17 to be in a gas-liquid two-phase state, and is gasified by absorbing heat from ambient air in the outdoor heat exchanger 11. The gasified refrigerant returns to the compressor 10. Further, the air in the common space 201 heated by the first indoor heat exchanger 12 is supplied to the air-conditioned spaces 202 and 203 via the duct 205 as shown by white arrows in FIG. Thereby, it becomes possible to heat each air-conditioned space 202,203. The air supplied to the air-conditioned spaces 202 and 203 is adjusted by the air volume variable devices 31 and 32 to an amount corresponding to the difference between the set temperature of the air-conditioned spaces 202 and 203 and the room temperature. In the present embodiment, the air volume varying device 33 is fully closed, and the supply of air from the shared space 201 to the air-conditioned space 204 that is individually air-conditioned is stopped. Thereby, it can suppress that the air conditioning capability of the whole building air conditioning is insufficient.

一方、第３室内熱交換器１４へ流入した冷媒は、空調空間２０４の空気に熱を放出することで（空気を加熱することで）液化する。また、第３室内熱交換器１４で加熱された空気は、図４に白抜き矢印で示すように、再び空調空間２０４へ戻る。これにより、空調空間２０４を、各空調空間２０２，２０３とは個別に暖房することが可能となる。なお、液化した冷媒は、膨張装置１７で減圧されて気液二相状態となり、室外熱交換器１１にて周囲空気から熱を吸収することでガス化する。ガス化した冷媒は圧縮機１０に戻る。   On the other hand, the refrigerant flowing into the third indoor heat exchanger 14 is liquefied by releasing heat to the air in the conditioned space 204 (by heating the air). Moreover, the air heated by the 3rd indoor heat exchanger 14 returns to the air-conditioned space 204 again, as shown by the white arrow in FIG. Thereby, the air-conditioned space 204 can be heated separately from the air-conditioned spaces 202 and 203. The liquefied refrigerant is decompressed by the expansion device 17 to be in a gas-liquid two-phase state, and is gasified by absorbing heat from ambient air in the outdoor heat exchanger 11. The gasified refrigerant returns to the compressor 10.

図５は、本発明の実施の形態に係る空気調和システムの冷媒流路切替装置の制御を示すフローチャートである。   FIG. 5 is a flowchart showing control of the refrigerant flow switching device of the air-conditioning system according to the embodiment of the present invention.

空気調和システム１００において暖房運転又は冷房運転が開始されると（ステップＳ１）、ステップＳ２において、制御装置５０の制御部５２は、「記憶部５１に記憶された空調空間２０４の設定温度と温度検出装置３６の検出温度（つまり、室内温度）との差である比較値」と「記憶部５１に記憶された閾値ｘ」とを比較する。ここで、冷房運転の場合、室内温度−設定温度が比較値となる。また、暖房運転の場合、設定温度−室内温度が比較値となる。すなわち、図５のステップＳ２は、冷房運転時を例示している。なお、閾値ｘは、例えば、１℃〜２℃の値である。   When the heating operation or the cooling operation is started in the air conditioning system 100 (step S1), in step S2, the control unit 52 of the control device 50 reads “the set temperature and temperature detection of the conditioned space 204 stored in the storage unit 51”. The comparison value that is the difference from the detected temperature of the device 36 (that is, the room temperature) is compared with the “threshold value x stored in the storage unit 51”. Here, in the case of the cooling operation, the indoor temperature-set temperature is a comparison value. In the case of heating operation, the set temperature−the room temperature is a comparative value. That is, step S2 in FIG. 5 illustrates the cooling operation. The threshold value x is, for example, a value between 1 ° C. and 2 ° C.

比較値が閾値ｘ以下の場合、制御部５２はステップＳ３に進み、第２室内熱交換器１３へ冷媒が流れる流路となるように冷媒流路切替装置１５を切り替える。その後、制御部５２はステップＳ４へ進み、各空調空間２０２〜２０４に供給される空気の量が各空調空間２０２〜２０４の設定温度と室内温度との差に応じた量となるように、風量可変装置３１〜３３を制御し、各空調空間２０２〜２０４を空調する。   When the comparison value is equal to or less than the threshold value x, the control unit 52 proceeds to step S3 and switches the refrigerant flow switching device 15 so that the flow path of the refrigerant flows to the second indoor heat exchanger 13. Thereafter, the control unit 52 proceeds to step S4, and the air volume is adjusted so that the amount of air supplied to each of the air-conditioned spaces 202 to 204 becomes an amount corresponding to the difference between the set temperature of each of the air-conditioned spaces 202 to 204 and the room temperature. The variable devices 31-33 are controlled and each air-conditioned space 202-204 is air-conditioned.

一方、比較値が閾値ｘよりも大きい場合、制御部５２はステップＳ５に進み、第３室内熱交換器１４へ冷媒が流れる流路となるように冷媒流路切替装置１５を切り替える。その後、制御部５２はステップＳ６へ進み、各空調空間２０２，２０３に供給される空気の量が各空調空間２０２，２０３の設定温度と室内温度との差に応じた量となるように、風量可変装置３１〜３３を制御し、各空調空間２０２，２０３を空調する。また、制御部５２は、風量可変装置３３を閉止し、共用空間２０１から個別空調される空調空間２０４への空気の供給を停止する。   On the other hand, when the comparison value is larger than the threshold value x, the control unit 52 proceeds to step S5 and switches the refrigerant flow switching device 15 so that the refrigerant flows into the third indoor heat exchanger 14. Thereafter, the control unit 52 proceeds to step S6, and the air volume is adjusted so that the amount of air supplied to each air-conditioned space 202, 203 becomes an amount corresponding to the difference between the set temperature of each air-conditioned space 202, 203 and the room temperature. The variable devices 31 to 33 are controlled, and the air-conditioned spaces 202 and 203 are air-conditioned. In addition, the control unit 52 closes the air volume varying device 33 and stops the supply of air from the shared space 201 to the air-conditioned space 204 that is individually air-conditioned.

以上、本実施の形態に係る空気調和システム１００においては、第３室内熱交換器１４へ冷媒が流れる流路に冷媒流路切替装置１５を切り替えることにより、個別空調用室内機２が設置された空調空間２０４の空気を個別に冷却又は加熱することができる。このため、本実施の形態に係る空気調和システム１００は、負荷変動が大きい空調空間２０４の空調負荷が大きくなった場合でも、当該空調空間２０４を急速冷房又は急速暖房することが可能となる。したがって、本実施の形態に係る空気調和システム１００は、空調空間２０４で空調負荷が大きくなった場合でも、当該空調空間２０４の室内温度を設定温度近傍に維持することができ、当該空調空間２０４の快適性の低下を抑制することができる。   As described above, in the air conditioning system 100 according to the present embodiment, the individual air conditioning indoor unit 2 is installed by switching the refrigerant flow switching device 15 to the flow path through which the refrigerant flows to the third indoor heat exchanger 14. The air in the conditioned space 204 can be individually cooled or heated. For this reason, the air-conditioning system 100 according to the present embodiment can rapidly cool or rapidly heat the air-conditioned space 204 even when the air-conditioning load of the air-conditioned space 204 with a large load fluctuation increases. Therefore, the air-conditioning system 100 according to the present embodiment can maintain the room temperature of the air-conditioned space 204 near the set temperature even when the air-conditioning load in the air-conditioned space 204 becomes large. A decrease in comfort can be suppressed.

なお、図２に示した冷凍サイクル回路２０は、あくまでも一例である。例えば、図６のように冷凍サイクル回路２０を構成してもよい。   Note that the refrigeration cycle circuit 20 shown in FIG. 2 is merely an example. For example, the refrigeration cycle circuit 20 may be configured as shown in FIG.

図６は、本発明の実施の形態に係る空気調和システムの冷凍サイクル回路の別の一例を示す冷媒回路図である。
図６に示す冷凍サイクル回路２０では、第１圧縮機１０ａ及び第２圧縮機１０ｂで圧縮機１０が構成されている。また、第１四方弁１６ａ及び第２四方弁１６ｂで四方弁１６が構成されている。また、第１室外熱交換器１１ａ及び第２室外熱交換器１１ｂで室外熱交換器１１が構成されている。また、第１膨張装置１７ａ及び第２膨張装置１７ｂで膨張装置１７が構成されている。そして、冷凍サイクル回路２０は、第１圧縮機１０ａ、第１四方弁１６ａ、第１室外熱交換器１１ａ、第１膨張装置１７ａ及び第１室内熱交換器１２が接続された第１冷凍サイクル回路２０ａと、第２圧縮機１０ｂ、第２四方弁１６ｂ、第２室外熱交換器１１ｂ、第２膨張装置１７ｂ、第２室内熱交換器１３、第３室内熱交換器１４及び冷媒流路切替装置１５が接続される第２冷凍サイクル回路２０ｂと、で構成されている。FIG. 6 is a refrigerant circuit diagram illustrating another example of the refrigeration cycle circuit of the air-conditioning system according to the embodiment of the present invention.
In the refrigeration cycle circuit 20 shown in FIG. 6, the compressor 10 is comprised by the 1st compressor 10a and the 2nd compressor 10b. Further, the four-way valve 16 is constituted by the first four-way valve 16a and the second four-way valve 16b. Moreover, the outdoor heat exchanger 11 is comprised by the 1st outdoor heat exchanger 11a and the 2nd outdoor heat exchanger 11b. Further, the first expansion device 17a and the second expansion device 17b constitute the expansion device 17. The refrigeration cycle circuit 20 includes a first refrigeration cycle circuit to which the first compressor 10a, the first four-way valve 16a, the first outdoor heat exchanger 11a, the first expansion device 17a, and the first indoor heat exchanger 12 are connected. 20a, second compressor 10b, second four-way valve 16b, second outdoor heat exchanger 11b, second expansion device 17b, second indoor heat exchanger 13, third indoor heat exchanger 14, and refrigerant flow switching device 15 is connected to a second refrigeration cycle circuit 20b.

図６に示す冷凍サイクル回路２０の各構成要素は、全館空調用室内機１、個別空調用室内機２、並びに、室外機３を構成する第１室外機３ａ及び第２室外機３ｂに収納されている。詳しくは、全館空調用室内機１には、第１室内熱交換器１２及び第２室内熱交換器１３が収納されている。個別空調用室内機２には、第３室内熱交換器１４が収納されている。第１室外機３ａには、第１圧縮機１０ａ、第１四方弁１６ａ、第１室外熱交換器１１ａ及び第１膨張装置１７ａが収納されている。また、第２室外機３ｂには、第２圧縮機１０ｂ、第２四方弁１６ｂ、第２室外熱交換器１１ｂ及び第２膨張装置１７ｂが収納されている。冷媒流路切替装置１５の設置位置は、任意である。冷媒流路切替装置１５は、例えば、全館空調用室内機１に収納されてもよいし、個別空調用室内機２に収納されてもよいし、第２室外機３ｂに収納されてもよい。   Each component of the refrigeration cycle circuit 20 shown in FIG. 6 is accommodated in the indoor air conditioning indoor unit 1, the individual air conditioning indoor unit 2, and the first outdoor unit 3a and the second outdoor unit 3b that constitute the outdoor unit 3. ing. Specifically, the indoor air conditioning indoor unit 1 houses a first indoor heat exchanger 12 and a second indoor heat exchanger 13. A third indoor heat exchanger 14 is accommodated in the individual air conditioning indoor unit 2. The first outdoor unit 3a accommodates a first compressor 10a, a first four-way valve 16a, a first outdoor heat exchanger 11a, and a first expansion device 17a. The second outdoor unit 3b houses a second compressor 10b, a second four-way valve 16b, a second outdoor heat exchanger 11b, and a second expansion device 17b. The installation position of the refrigerant flow switching device 15 is arbitrary. For example, the refrigerant flow switching device 15 may be stored in the indoor air conditioning indoor unit 1, may be stored in the individual air conditioning indoor unit 2, or may be stored in the second outdoor unit 3 b.

また、個別空調用室内機２が設けられた空調空間２０４に人がいない場合等、空調空間２０４の空調が不要な時間帯がある場合、図７に示すように、空調空間２０４の空調を停止してもよい。つまり、空気調和システム１００を全館空調のみの運転にし、風量可変装置３３を全閉にしてもよい。本実施の形態に係る空気調和システム１００は、個別空調用室内機２によって空調空間２０４を急速冷房又は急速暖房することができる。このため、空調空間２０４に空調負荷が発生した場合には、個別空調によって対応できるので、空調空間２０４の空調が不要な時間帯がある場合、空調空間２０４の空調を停止することができる。このように空調空間２０４の空調を停止することにより、空気調和システム１００の消費電力を削減することができる。なお、空調空間２０４の空調が不要な時間帯は、例えば、記憶部５１に記憶させる。   In addition, when there is a time zone in which the air-conditioning space 204 is not required, such as when there is no person in the air-conditioned space 204 in which the individual air-conditioning indoor unit 2 is provided, as shown in FIG. May be. That is, the air conditioning system 100 may be operated only in the entire building air conditioning, and the air volume varying device 33 may be fully closed. The air conditioning system 100 according to the present embodiment can rapidly cool or rapidly heat the conditioned space 204 by the individual air conditioning indoor unit 2. For this reason, when an air conditioning load is generated in the air conditioned space 204, it can be handled by individual air conditioning. Therefore, when there is a time zone in which the air conditioned space 204 is not required, the air conditioning of the air conditioned space 204 can be stopped. Thus, by stopping the air conditioning of the conditioned space 204, the power consumption of the air conditioning system 100 can be reduced. The time zone in which the air conditioning space 204 does not require air conditioning is stored in the storage unit 51, for example.

また、本実施の形態では個別空調用室内機２を１つのみ有する空気調和システム１００について説明したが、空気調和システム１００に複数の個別空調用室内機２を備えてもよい。そして、複数の空調空間にこれらの個別空調用室内機２を備えてもよい。この場合、例えば図８に示すように、第３室内熱交換器１４を並列接続するとよい。また、この場合、各第３室内熱交換器１４に対応して、これら第３室内熱交換器１４に連通する冷媒流路を開閉する開閉装置１９を設けてもよい。いずれかの個別空調用室内機２が設けられた空調空間の空調負荷が大きくなった場合、空調負荷が大きくなった当該空調空間に設けられた個別空調用室内機２の第３室内熱交換器１４のみに、冷媒を供給することができる。   In the present embodiment, the air conditioning system 100 having only one individual air conditioning indoor unit 2 has been described. However, the air conditioning system 100 may include a plurality of individual air conditioning indoor units 2. Then, these individual air conditioning indoor units 2 may be provided in a plurality of air conditioning spaces. In this case, for example, as shown in FIG. 8, the third indoor heat exchanger 14 may be connected in parallel. In this case, an open / close device 19 that opens and closes the refrigerant flow path communicating with the third indoor heat exchangers 14 may be provided corresponding to each of the third indoor heat exchangers 14. When the air-conditioning load of the air-conditioned space in which any of the individual air-conditioning indoor units 2 is provided increases, the third indoor heat exchanger of the individual air-conditioning indoor unit 2 provided in the air-conditioned space in which the air-conditioning load has increased. Only 14 can be supplied with refrigerant.

１ 全館空調用室内機、２ 個別空調用室内機、３ 室外機、３ａ 第１室外機、３ｂ 第２室外機、１０ 圧縮機、１０ａ 第１圧縮機、１０ｂ 第２圧縮機、１１ 室外熱交換器、１１ａ 第１室外熱交換器、１１ｂ 第２室外熱交換器、１２ 第１室内熱交換器、１３ 第２室内熱交換器、１４ 第３室内熱交換器、１５ 冷媒流路切替装置、１６ 四方弁、１６ａ 第１四方弁、１６ｂ 第２四方弁、１７ 膨張装置、１７ａ 第１膨張装置、１７ｂ 第２膨張装置、１８ 冷媒配管、１９ 開閉装置、２０ 冷凍サイクル回路、２０ａ 第１冷凍サイクル回路、２０ｂ 第２冷凍サイクル回路、３１〜３３ 風量可変装置、３４〜３６ 温度検出装置、５０ 制御装置、５１ 記憶部、５２ 制御部、１００ 空気調和システム、２０１ 共用空間、２０２〜２０４ 空調空間、２０５ ダクト。   DESCRIPTION OF SYMBOLS 1 Indoor air conditioning indoor unit, 2 Individual air conditioning indoor unit, 3 Outdoor unit, 3a 1st outdoor unit, 3b 2nd outdoor unit, 10 compressor, 10a 1st compressor, 10b 2nd compressor, 11 Outdoor heat exchange 11a first outdoor heat exchanger, 11b second outdoor heat exchanger, 12 first indoor heat exchanger, 13 second indoor heat exchanger, 14 third indoor heat exchanger, 15 refrigerant flow switching device, 16 Four-way valve, 16a First four-way valve, 16b Second four-way valve, 17 Expansion device, 17a First expansion device, 17b Second expansion device, 18 Refrigerant piping, 19 Opening / closing device, 20 Refrigeration cycle circuit, 20a First refrigeration cycle circuit 20b Second refrigeration cycle circuit, 31-33 Air volume variable device, 34-36 Temperature detection device, 50 Control device, 51 Storage unit, 52 Control unit, 100 Air conditioning system, 201 Shared space, 20 To 204 air-conditioned space, 205 duct.

本発明に係る空気調和システムは、圧縮機、室外熱交換器、膨張装置、第１室内熱交換器、第２室内熱交換器及び第３室内熱交換器を有し、前記第１室内熱交換器、前記第２室内熱交換器及び前記第３室内熱交換器に供給された冷媒で空気を冷却又は加熱する冷凍サイクル回路と、前記第１室内熱交換器及び前記第２室内熱交換器が収納された第１室内機と、前記第３室内熱交換器が収納された第２室内機と、を備え、前記第１室内機は、通風路を介して複数の空調空間と連通する共用空間に設けられるものであり、前記第２室内機は、複数の前記空調空間の少なくとも１つに設けられるものであり、前記第１室内熱交換器、前記第２室内熱交換器及び前記第３室内熱交換器は、並列に接続されており、前記冷凍サイクル回路は、さらに、冷媒流路を切り替える冷媒流路切替装置を有し、該冷媒流路切替装置は、前記第２室内熱交換器へ冷媒が流れる流路又は前記第３室内熱交換器へ冷媒が流れる流路に切り替えるものである。 An air conditioning system according to the present invention includes a compressor, an outdoor heat exchanger, an expansion device, a first indoor heat exchanger, a second indoor heat exchanger, and a third indoor heat exchanger, and the first indoor heat exchange. A refrigeration cycle circuit that cools or heats air with a refrigerant supplied to the second indoor heat exchanger and the third indoor heat exchanger, the first indoor heat exchanger, and the second indoor heat exchanger A common space that includes a stored first indoor unit and a second indoor unit in which the third indoor heat exchanger is stored, and the first indoor unit communicates with a plurality of air-conditioned spaces through a ventilation path. The second indoor unit is provided in at least one of the plurality of air-conditioned spaces, and the first indoor heat exchanger, the second indoor heat exchanger, and the third room the heat exchanger is connected in parallel, the refrigeration cycle circuit further cold A refrigerant flow switching device for switching the flow path, the refrigerant flow switching device switches the flow path through which the refrigerant flows the the second flow path through which the refrigerant flows into the indoor heat exchanger or the third indoor heat exchanger Is .

Claims (6)

圧縮機、室外熱交換器、膨張装置、第１室内熱交換器、第２室内熱交換器及び第３室内熱交換器を有し、前記第１室内熱交換器、前記第２室内熱交換器及び前記第３室内熱交換器に供給された冷媒で空気を冷却又は加熱する冷凍サイクル回路と、
前記第１室内熱交換器及び前記第２室内熱交換器が収納された第１室内機と、
前記第３室内熱交換器が収納された第２室内機と、
を備え、
前記第１室内機は、通風路を介して複数の空調空間と連通する共用空間に設けられるものであり、
前記第２室内機は、複数の前記空調空間の少なくとも１つに設けられるものであり、
前記冷凍サイクル回路は、さらに、前記第２室内熱交換器へ冷媒が流れる流路又は前記第３室内熱交換器へ冷媒が流れる流路に冷媒流路を切り替える冷媒流路切替装置を有する空気調和システム。A compressor, an outdoor heat exchanger, an expansion device, a first indoor heat exchanger, a second indoor heat exchanger, and a third indoor heat exchanger, the first indoor heat exchanger, the second indoor heat exchanger And a refrigeration cycle circuit for cooling or heating air with the refrigerant supplied to the third indoor heat exchanger,
A first indoor unit in which the first indoor heat exchanger and the second indoor heat exchanger are stored;
A second indoor unit in which the third indoor heat exchanger is stored;
With
The first indoor unit is provided in a common space that communicates with a plurality of air-conditioned spaces through a ventilation path.
The second indoor unit is provided in at least one of the plurality of air-conditioned spaces,
The refrigeration cycle circuit further includes an air conditioner having a refrigerant flow switching device that switches a refrigerant flow path to a flow path through which refrigerant flows to the second indoor heat exchanger or a flow path through which refrigerant flows to the third indoor heat exchanger. system. 前記第２室内機が設けられた前記空調空間である個別空調空間に設けられ、当該個別空調空間の温度を検出する温度検出装置と、
当該個別空調空間の設定温度を記憶する記憶部、及び、前記冷媒流路切替装置の切り替えを制御する制御部を有する制御装置と、
を備え、
前記制御部は、
前記設定温度と前記温度検出装置の検出温度との差である比較値が閾値以下の場合、前記第２室内熱交換器へ冷媒が流れる流路となるように前記冷媒流路切替装置を制御し、
前記比較値が前記閾値より大きい場合、前記比較値が前記閾値より大きくなっている前記個別空調空間に設けられた前記第３室内熱交換器へ冷媒が流れる流路となるように、前記冷媒流路切替装置を制御する構成である請求項１に記載の空気調和システム。A temperature detection device that is provided in an individual air-conditioned space that is the air-conditioned space in which the second indoor unit is provided, and that detects the temperature of the individual air-conditioned space;
A control unit having a storage unit that stores a set temperature of the individual air-conditioned space, and a control unit that controls switching of the refrigerant flow switching device;
With
The controller is
When the comparison value, which is the difference between the set temperature and the temperature detected by the temperature detection device, is equal to or less than a threshold value, the refrigerant flow switching device is controlled so that the refrigerant flows into the second indoor heat exchanger. ,
When the comparison value is larger than the threshold value, the refrigerant flow is such that the refrigerant flows into the third indoor heat exchanger provided in the individual conditioned space where the comparison value is larger than the threshold value. The air conditioning system according to claim 1, which is configured to control the path switching device. 前記圧縮機は、第１圧縮機及び第２圧縮機を備え、
前記室外熱交換器は、第１室外熱交換器及び第２室外熱交換器を備え、
前記膨張装置は、第１膨張装置及び第２膨張装置を備え、
前記冷凍サイクル回路は、
前記第１圧縮機、前記第１室外熱交換器、前記第１膨張装置及び前記第１室内熱交換器が接続される第１冷凍サイクル回路と、
前記第２圧縮機、前記第２室外熱交換器、前記第２膨張装置、前記第２室内熱交換器、前記第３室内熱交換器及び前記冷媒流路切替装置が接続される第２冷凍サイクル回路と、を備えた請求項１又は請求項２に記載の空気調和システム。The compressor includes a first compressor and a second compressor,
The outdoor heat exchanger includes a first outdoor heat exchanger and a second outdoor heat exchanger,
The expansion device includes a first expansion device and a second expansion device,
The refrigeration cycle circuit is:
A first refrigeration cycle circuit to which the first compressor, the first outdoor heat exchanger, the first expansion device, and the first indoor heat exchanger are connected;
A second refrigeration cycle to which the second compressor, the second outdoor heat exchanger, the second expansion device, the second indoor heat exchanger, the third indoor heat exchanger, and the refrigerant flow switching device are connected. An air conditioning system according to claim 1 or 2, comprising a circuit. 複数の前記空調空間のそれぞれに対応して設けられ、前記空調空間に供給する前記共用空間からの空気の量を調整する風量可変装置を備えた請求項１〜請求項３のいずれか一項に記載の空気調和システム。   The air volume variable device which is provided corresponding to each of a plurality of the air-conditioned spaces and adjusts the amount of air from the shared space supplied to the air-conditioned spaces. The air conditioning system described. 前記冷媒流路切替装置が前記第３室内熱交換器へ冷媒が流れる流路に切り替えられている状態において、
当該第３室内熱交換器が設けられた前記空調空間に対応する前記風量可変装置によって、前記共用空間から当該空調空間への空気の供給を停止する構成である請求項４に記載の空気調和システム。In the state where the refrigerant flow switching device is switched to the flow path through which the refrigerant flows to the third indoor heat exchanger,
5. The air conditioning system according to claim 4, wherein supply of air from the shared space to the conditioned space is stopped by the air volume variable device corresponding to the conditioned space provided with the third indoor heat exchanger. . 前記第２室内機が設けられた前記空調空間の空調が不要な時間帯、
前記第２室内熱交換器へ冷媒が流れる流路となるように、前記冷媒流路切替装置が切り替えられ、
当該空調空間に対応する前記風量可変装置を全閉にして、前記共用空間から当該空調空間への空気の供給を停止する構成である請求項４又は請求項５に記載の空気調和システム。A time zone in which the air-conditioned space in which the second indoor unit is provided is not required,
The refrigerant flow switching device is switched so that the refrigerant flows into the second indoor heat exchanger.
The air conditioning system according to claim 4 or 5, wherein the air volume variable device corresponding to the air-conditioned space is fully closed to stop the supply of air from the shared space to the air-conditioned space.
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