JP2899341B2 - Multi-room air conditioner - Google Patents
Multi-room air conditionerInfo
- Publication number
- JP2899341B2 JP2899341B2 JP3207690A JP3207690A JP2899341B2 JP 2899341 B2 JP2899341 B2 JP 2899341B2 JP 3207690 A JP3207690 A JP 3207690A JP 3207690 A JP3207690 A JP 3207690A JP 2899341 B2 JP2899341 B2 JP 2899341B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- refrigerant
- outdoor
- auxiliary heat
- indoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Other Air-Conditioning Systems (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は多室冷暖房装置の冷媒サイクルに関するもの
である。Description: TECHNICAL FIELD The present invention relates to a refrigerant cycle of a multi-room air conditioner.
従来の技術 従来、冷媒サイクルを熱源側と利用側に分離した多室
冷暖房装置は、特開昭62-272040号公報に示されてい
る。第２図は上記従来の多室冷暖房装置の冷媒サイクル
を示すものである。第２図において、11は圧縮機、12は
四方弁、13は熱源側熱交換器、14は冷房用減圧装置、15
は暖房用減圧装置、16は暖房時冷房用減圧装置14を閉成
する逆止弁、17は冷房時暖房用減圧装置15を閉成する逆
止弁、18は第１補助熱交換器でこれらを環状に連接し、
熱源側冷媒サイクルを形成している。19は第２補助熱交
換器で第１補助熱交換器18と熱交換するように一体に形
成されている。20は冷媒量調整タンクで冷房時と暖房時
の冷凍量を調整している。21は冷媒搬送装置で冷房時と
暖房時で冷媒の流出方向が反対となる可逆特性をもって
おり、これらは室外ユニットｆに収納されている。22a,
22bは利用側熱交換器で室内ユニットg,hに収納され接続
配管i,i′,j,j′で室外ユニットｆと接続されている。
前記第２補助熱交換器19と冷媒量調整タンク20,冷媒搬
送装置21,利用側熱交換器22a,22bおよび接続配管i,i′,
j,j′を環状連接し利用側冷媒サイクルを形成してい
る。2. Description of the Related Art Conventionally, a multi-room cooling and heating device in which a refrigerant cycle is separated into a heat source side and a use side is disclosed in Japanese Patent Application Laid-Open No. 62-272040. FIG. 2 shows a refrigerant cycle of the conventional multi-room air conditioner. In FIG. 2, 11 is a compressor, 12 is a four-way valve, 13 is a heat source side heat exchanger, 14 is a decompression device for cooling, 15
Is a check valve for closing the pressure reducing device 14 for heating and cooling, 17 is a check valve for closing the pressure reducing device 15 for cooling and heating, and 18 is a first auxiliary heat exchanger. Are connected in a ring,
A heat source side refrigerant cycle is formed. Reference numeral 19 denotes a second auxiliary heat exchanger which is integrally formed so as to exchange heat with the first auxiliary heat exchanger 18. Reference numeral 20 denotes a refrigerant amount adjusting tank for adjusting the amount of refrigeration during cooling and during heating. Reference numeral 21 denotes a refrigerant transport device having reversible characteristics in which the refrigerant flows in opposite directions during cooling and during heating, and these are housed in the outdoor unit f. 22a,
Reference numeral 22b denotes a use side heat exchanger which is housed in the indoor units g and h and connected to the outdoor unit f by connection pipes i, i ', j and j'.
The second auxiliary heat exchanger 19 and the refrigerant amount adjusting tank 20, the refrigerant transport device 21, the use side heat exchangers 22a and 22b and the connection pipes i and i ',
j and j 'are connected annularly to form a use-side refrigerant cycle.
以上のように構成された多室冷暖房装置について、そ
の動作を説明する。The operation of the multi-room air-conditioning apparatus configured as described above will be described.
冷房運転時は図中実線の冷媒サイクルとなり、熱源側
冷媒サイクルでは、圧縮機11からの高温高圧ガスは四方
弁12を通り熱源側熱交換器13で放熱して凝縮液化し、逆
止弁16を通って冷房用膨脹弁14で減圧され第１補助熱交
換器18で蒸発して四方弁12を通り圧縮機12へ循環する。
この時利用側冷媒サイクルの第２補助熱交換器19と前記
第１補助熱交換器18が熱交換し、利用側冷媒サイクル内
のガス冷媒が冷却されて液化し、冷媒量調整タンク20を
通って冷媒搬送装置21に送られ、この冷媒搬送装置21に
よって接続配管i,jを通って利用側熱交換器22a,22bへ送
られて吸熱蒸発し、ガス化して接続配管ｉ′,j′を通っ
て第２補助熱交換器19に循環することになる。During the cooling operation, the refrigerant cycle is as indicated by the solid line in the figure.In the heat source-side refrigerant cycle, the high-temperature and high-pressure gas from the compressor 11 passes through the four-way valve 12 and radiates heat in the heat source-side heat exchanger 13 to condense and liquefy. The pressure is reduced by the cooling expansion valve 14, evaporated in the first auxiliary heat exchanger 18, and circulated to the compressor 12 through the four-way valve 12.
At this time, the second auxiliary heat exchanger 19 of the use side refrigerant cycle and the first auxiliary heat exchanger 18 exchange heat, and the gas refrigerant in the use side refrigerant cycle is cooled and liquefied, and passes through the refrigerant amount adjusting tank 20. Is sent to the refrigerant transfer device 21 and is sent to the use side heat exchangers 22a and 22b through the connection pipes i and j by the refrigerant transfer device 21 to absorb heat and evaporate, gasify and connect the connection pipes i ′ and j ′. And circulates to the second auxiliary heat exchanger 19.
一方、暖房運転時においては、図中破線の冷媒サイク
ルとなり、熱源側冷媒サイクルでは、圧縮機11からの高
温高圧冷媒は四方弁12から第１補助熱交換器18に送ら
れ、放熱して凝縮液化し、逆止弁17から暖房用減圧装置
15で減圧し、熱源側熱交換器13で吸熱蒸発し、四方弁12
を通って圧縮機11へ循環する。この時利用側冷媒サイク
ルの第２補助熱交換器19と前記第１補助熱交換器18が熱
交換し、利用側冷媒サイクル内の液冷媒が加熱されてガ
ス化し、接続配管ｉ′,j′を通って利用側熱交換器22へ
送られ、暖房して放熱液化し接続配管i,jを通って冷媒
搬送装置21へ送られ、冷媒量調整タンク20から第２補助
熱交換器19へ循環する。On the other hand, during the heating operation, the refrigerant cycle is indicated by a broken line in the drawing, and in the heat source side refrigerant cycle, the high-temperature and high-pressure refrigerant from the compressor 11 is sent from the four-way valve 12 to the first auxiliary heat exchanger 18, and radiates heat and condenses. Liquefaction, decompression device for heating from check valve 17
The pressure is reduced at 15, the heat is absorbed and evaporated at the heat source side heat exchanger 13, and the four-way valve 12
And circulates through the compressor 11. At this time, the second auxiliary heat exchanger 19 of the use side refrigerant cycle and the first auxiliary heat exchanger 18 exchange heat, the liquid refrigerant in the use side refrigerant cycle is heated and gasified, and the connection pipes i ′, j ′ To the use-side heat exchanger 22, is heated and radiated and liquefied, is sent to the refrigerant transfer device 21 through the connection pipes i and j, and circulates from the refrigerant amount adjustment tank 20 to the second auxiliary heat exchanger 19. I do.
発明が解決しようとする課題 しかしながら上記の構成では、各室外ユニット毎に冷
媒搬送装置を設けているため、室外ユニットと室内ユニ
ットの接続配管が長くなったり、室外ユニットに対して
室内ユニットの台数が多くなれば冷媒搬送装置の能力不
足となり、各室内ユニットの能力低下や能力制御が不安
定になる。However, in the above configuration, since the refrigerant transfer device is provided for each outdoor unit, the connection pipe between the outdoor unit and the indoor unit becomes longer, or the number of indoor units for the outdoor unit is reduced. If the number increases, the capacity of the refrigerant transport device becomes insufficient, and the capacity of each indoor unit decreases and the capacity control becomes unstable.
また各室内ユニット及び室外ユニットの台数が多くな
れば、それぞれのユニットへの冷媒の最適分流が困難と
なり、システムの効率が大きく低下したり保護装置が作
動して運転が停止する恐れを有していた。In addition, if the number of indoor units and outdoor units is large, it is difficult to optimally divert the refrigerant to each unit, and there is a risk that the efficiency of the system is greatly reduced or the protection device is activated and the operation is stopped. Was.
本発明は上記課題に鑑み、室外ユニットと室内ユニッ
トの配管長さが長くなったり、室外ユニットと室内ユニ
ットのアンバランス運転になっても冷媒搬送装置の能力
を最適に調整し、かつ各室外ユニットと室内ユニットへ
の冷媒分流を最適化して、システムを常に効率の高い安
定した運転のできる多室冷暖房装置を提供するものであ
る。In view of the above problems, the present invention adjusts the capacity of the refrigerant transfer device optimally even when the piping length between the outdoor unit and the indoor unit is long, or when the outdoor unit and the indoor unit are unbalanced, and The present invention is to provide a multi-room air conditioner that can always operate the system with high efficiency and stable operation by optimizing the refrigerant flow to the indoor unit.
課題を解決するための手段 上記課題を解決するために本発明の多室冷暖房装置
は、圧縮機，熱源側熱交換器，減圧装置および第１補助
熱交換器を環状に連接してなる熱源側冷媒サイクルと、
この第１補助熱交換器と一体に形成し熱交換する第２補
助熱交換器と、この第２補助熱交換器と直列に設けた室
外側流量弁とを有する複数の室外ユニットと、この各室
外ユニツトに設けられた第２補助熱交換器及び室外流量
弁を並列に接続したものと、利用側熱交換器とこの利用
側熱交換器と直列に設けた室内流量弁を備え並列に接続
された複数の室内ユニットと、複数の冷媒搬送装置を並
列に接続した冷媒搬送ユニットを環状に連接してなる利
用側冷媒サイクルとを備えた。Means for Solving the Problems In order to solve the above problems, a multi-room cooling and heating apparatus according to the present invention includes a heat source side in which a compressor, a heat source side heat exchanger, a pressure reducing device, and a first auxiliary heat exchanger are connected in a ring shape. A refrigerant cycle,
A plurality of outdoor units each having a second auxiliary heat exchanger formed integrally with the first auxiliary heat exchanger and exchanging heat, and an outdoor flow valve provided in series with the second auxiliary heat exchanger; A second auxiliary heat exchanger and an outdoor flow valve provided in the outdoor unit are connected in parallel, and a use side heat exchanger and an indoor flow valve provided in series with the use side heat exchanger are connected in parallel. A plurality of indoor units, and a use-side refrigerant cycle in which a plurality of refrigerant transport units are connected in parallel and a refrigerant transport unit is connected in a ring shape.
作用 本発明は上記した構成によって、室外ユニットと室内
ユニットの配管長さや室外ユニットと室内ユニット運転
状況に最適な冷媒搬送能力及び冷媒分流に調整できるこ
ととなる。Operation According to the above-described configuration, the present invention can adjust the piping length of the outdoor unit and the indoor unit and the refrigerant transfer capacity and the refrigerant branch flow that are optimal for the operating conditions of the outdoor unit and the indoor unit.
実施例 以下本発明の一実施例の多室冷暖房装置について、図
面を参照しながら説明する。Embodiment Hereinafter, a multi-room air-conditioning apparatus according to an embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の多室冷暖房装置の冷媒サイク図であ
るが、従来例とほぼ同一でありここではその変わってい
る所だけを説明する。FIG. 1 is a refrigerant cycle diagram of a multi-room air-conditioning apparatus according to the present invention, which is almost the same as the conventional example, and only the different points will be described here.
室外ユニットf,f′には冷媒搬送装置21がなく、多液
管である接続配管ｉの途中に備えた冷媒搬送ユニット23
の中に冷媒搬送装置21が設けられている。The outdoor units f and f ′ do not have the refrigerant transport device 21 and the refrigerant transport unit 23 provided in the middle of the connection pipe i which is a multi-liquid pipe.
Is provided with a refrigerant transport device 21.
また室外ユニットf,f′には第２補助熱交換器19への
冷媒流量を調整する室外流量弁24、室内ユニットｇ、ｈ
には室内側熱交換器22a,22bへの冷媒流量を調整する室
内流量弁25a,25bが設けられている。The outdoor units f and f 'include an outdoor flow valve 24 for adjusting the flow rate of the refrigerant to the second auxiliary heat exchanger 19, and the indoor units g and h.
Are provided with indoor flow valves 25a, 25b for adjusting the flow rate of the refrigerant to the indoor heat exchangers 22a, 22b.
次に動作について説明するが、動作についても基本的
には従来例と同一であり、ここでは変わっている所だけ
を説明する。冷媒搬送装置21の運転台数は室外ユニット
f,f′と室内ユニットg,hの運転台数及び必要冷媒流量に
応じで運転する。また室外流量弁24及び室内流量弁25a
・25bはそれぞれのユニットの必要冷媒量を流通するよ
うに全開から全閉まで開度調整され最適分流を行なって
いる。Next, the operation will be described. The operation is basically the same as that of the conventional example, and only the different points will be described here. The number of operating refrigerant transfer devices 21 is an outdoor unit
The operation is performed according to the operating numbers of f and f 'and the indoor units g and h and the required refrigerant flow rate. The outdoor flow valve 24 and the indoor flow valve 25a
The opening of 25b is adjusted from full open to fully closed so that the required amount of refrigerant of each unit is circulated, and an optimal diversion is performed.
以上のように本実施例によれば、圧縮機11,熱源側熱
交換器13,減圧装置14,15および第１補助熱交換器18を環
状に連接してなる熱源側冷媒サイクルと、この第１補助
熱交換器18と一体に形成し熱交換する第２補助熱交換器
19と、この第２補助熱交換器18と直列に設けた室外側流
量弁24とを有する複数の室外ユニットf,f′と、この各
室外ユニットf,f′に設けられた第２補助熱交換器19及
び室外流量弁24を並列に接続したものと、利用側熱交換
器22a,22bとこの利用側熱交換器22a,22bと直列に設けた
室内流量弁25a,25bを備え並列に接続された複数の室内
ユニットg,hと、複数の冷媒搬送装置21を並列に接続し
た冷媒搬送ユニット23とを環状に連接してなる利用側冷
媒サイクルとを備えたので、室外ユニットの運転台数や
室外ユニットと室内ユニットの配管長さや室内ユニット
の運転台数に最適な冷媒搬送装置の運転容量を選択でき
る。従って冷媒搬送装置の能力不足による室内ユニット
の能力低下がなく、能力制御も安定する。As described above, according to the present embodiment, the heat source side refrigerant cycle in which the compressor 11, the heat source side heat exchanger 13, the pressure reducing devices 14, 15 and the first auxiliary heat exchanger 18 are connected in an annular manner, 1 A second auxiliary heat exchanger formed integrally with the auxiliary heat exchanger 18 and exchanging heat
19, a plurality of outdoor units f, f 'each having an outdoor flow valve 24 provided in series with the second auxiliary heat exchanger 18, and a second auxiliary heat provided in each of the outdoor units f, f'. An exchanger 19 and an outdoor flow valve 24 connected in parallel, and use-side heat exchangers 22a, 22b and indoor flow valves 25a, 25b provided in series with the use-side heat exchangers 22a, 22b are connected in parallel. A plurality of indoor units g, h, and a use side refrigerant cycle in which a plurality of refrigerant transfer units 21 are connected in parallel with a refrigerant transfer unit 23 connected in parallel, so that the number of operating outdoor units and The operation capacity of the refrigerant transfer device that is optimal for the piping length of the outdoor unit and the indoor unit and the number of operating indoor units can be selected. Therefore, the capacity of the indoor unit does not decrease due to insufficient capacity of the refrigerant transfer device, and the capacity control is stabilized.
また室外流量弁と室内流量弁の開度調整により各室外
ユニットと室内ユニットへの最適分流も可能となり、シ
ステムの効率が低下したり保護装置の作動により運転が
停止することもなく安定した運転ができる。In addition, by adjusting the opening of the outdoor flow valve and the indoor flow valve, it is possible to optimize the flow to each outdoor unit and indoor unit, and stable operation without reducing the efficiency of the system or stopping the operation by the protection device. it can.
発明の効果 以上のように本発明の多室冷暖房装置は、圧縮機，熱
源側熱交換器，減圧装置および第１補助熱交換器を環状
に連接してなる熱源側冷媒サイクルと、この第１補助熱
交換器と一体に形成し熱交換する第２補助熱交換器と、
この第２補助熱交換器と直列に設けた室外側流量弁とを
有する複数の室外ユニットと、この各室外ユニツトに設
けられた第２補助熱交換器及び室外流量弁を並列に接続
したものと、利用側熱交換器とこの利用側熱交換器と直
列に設けた室内流量弁を備え並列に接続された複数の室
内ユニットと、複数の冷媒搬送装置を並列に接続した冷
媒搬送ユニットとを環状に連接してなる利用側冷媒サイ
クルとを備えたので、室外ユニットの運転台数や室外ユ
ニットと室内ユニットの配管長さや室内ユニットの運転
台数に最適な冷媒搬送装置の運転容量を選択できる。従
って冷媒搬送装置の能力不足による室内ユニットの能力
低下がなく、能力制御も安定する。Effect of the Invention As described above, the multi-room air conditioner of the present invention includes a heat source side refrigerant cycle in which a compressor, a heat source side heat exchanger, a pressure reducing device, and a first auxiliary heat exchanger are connected in a ring shape. A second auxiliary heat exchanger formed integrally with the auxiliary heat exchanger and exchanging heat;
A plurality of outdoor units having an outdoor flow valve provided in series with the second auxiliary heat exchanger, and a second auxiliary heat exchanger and an outdoor flow valve provided in each of the outdoor units connected in parallel; A plurality of indoor units connected in parallel with a use-side heat exchanger and an indoor flow valve provided in series with the use-side heat exchanger, and a refrigerant transport unit in which a plurality of refrigerant transport devices are connected in parallel; And the use-side refrigerant cycle connected to the air conditioner, it is possible to select the optimum operating capacity of the refrigerant transfer device for the number of operating outdoor units, the length of piping between the outdoor unit and the indoor unit, and the operating number of indoor units. Therefore, the capacity of the indoor unit does not decrease due to insufficient capacity of the refrigerant transfer device, and the capacity control is stabilized.
また室外流量弁と室内流量弁の開度調整により、各室
外ユニットと室内ユニットへの最適分流も可能となり、
システムの効率が低下したり保護装置の作動により運転
が停止することもなく安定した運転ができる。Also, by adjusting the opening of the outdoor flow valve and the indoor flow valve, it is possible to optimize the flow to each outdoor unit and indoor unit.
Stable operation can be performed without reducing the efficiency of the system or stopping the operation due to the operation of the protection device.
第１図は本発明の一実施例における多室冷暖房装置の冷
媒サイクル図、第２図は従来の多室冷暖房装置の冷媒サ
イクル図である。 13……熱源側熱交換器、18……第１補助熱交換器、19…
…第２補助熱交換器、f,f′……室外ユニット、g,g′…
…室内ユニット、21……冷媒搬送装置、22a,22b……利
用側熱交換器、23……冷媒搬送ユニット、24……室外流
量弁、25a,25b……室内流量弁。FIG. 1 is a refrigerant cycle diagram of a multi-room air conditioner in one embodiment of the present invention, and FIG. 2 is a refrigerant cycle diagram of a conventional multi-room air conditioner. 13 ... heat source side heat exchanger, 18 ... first auxiliary heat exchanger, 19 ...
... Second auxiliary heat exchanger, f, f '... Outdoor unit, g, g' ...
... indoor unit, 21 ... refrigerant transfer device, 22a, 22b ... use side heat exchanger, 23 ... refrigerant transfer unit, 24 ... outdoor flow valve, 25a, 25b ... indoor flow valve.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F24F 5/00 102 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 6 , DB name) F24F 5/00 102
Claims (1)
第１補助熱交換器を環状に連接してなる熱源側冷媒サイ
クルと、この第１補助熱交換器と一体に形成し熱交換す
る第２補助熱交換器と、この第２補助熱交換器と直列に
設けた室外側流量弁とを有する複数の室外ユニットと、 この各室外ユニットに設けられた第２補助熱交換器及び
室外流量弁を並列に接続したものと、利用側熱交換器と
この利用側熱交換器と直列に設けた室内流量弁を備え並
列に接続された複数の室内ユニットと、複数の冷媒搬送
装置を並列に接続した冷媒搬送ユニットとを環状に連接
してなる利用側冷媒サイクルとを備えた多室冷暖房装
置。1. A heat source side refrigerant cycle in which a compressor, a heat source side heat exchanger, a pressure reducing device and a first auxiliary heat exchanger are connected in a ring shape, and a heat exchange formed integrally with the first auxiliary heat exchanger. A plurality of outdoor units each having a second auxiliary heat exchanger, and an outdoor flow valve provided in series with the second auxiliary heat exchanger; a second auxiliary heat exchanger provided in each of the outdoor units; A flow valve connected in parallel, a use-side heat exchanger and a plurality of indoor units connected in parallel with an indoor flow valve provided in series with the use-side heat exchanger, and a plurality of refrigerant transfer devices connected in parallel. And a use-side refrigerant cycle in which a refrigerant transfer unit connected to the air conditioner is annularly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3207690A JP2899341B2 (en) | 1990-02-13 | 1990-02-13 | Multi-room air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3207690A JP2899341B2 (en) | 1990-02-13 | 1990-02-13 | Multi-room air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03236536A JPH03236536A (en) | 1991-10-22 |
| JP2899341B2 true JP2899341B2 (en) | 1999-06-02 |
Family
ID=12348789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3207690A Expired - Fee Related JP2899341B2 (en) | 1990-02-13 | 1990-02-13 | Multi-room air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899341B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018003099A1 (en) * | 2016-06-30 | 2018-01-04 | 三菱電機株式会社 | Cooling apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753896B (en) * | 2010-02-26 | 2015-08-05 | 株式会社日立制作所 | Conditioner |
-
1990
- 1990-02-13 JP JP3207690A patent/JP2899341B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018003099A1 (en) * | 2016-06-30 | 2018-01-04 | 三菱電機株式会社 | Cooling apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03236536A (en) | 1991-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |