JPS5928265Y2

JPS5928265Y2 - Separate air conditioner

Info

Publication number: JPS5928265Y2
Application number: JP15150479U
Authority: JP
Inventors: 修平山本
Original assignee: 株式会社日立製作所
Priority date: 1979-11-02
Filing date: 1979-11-02
Publication date: 1984-08-15
Also published as: JPS5670738U

Description

【考案の詳細な説明】本考案は室外ユニットに複数の圧縮機を組込み、該室外
ユニットに複数の室内ユニットを接続してなるいわゆる
マルチセパレート形ルームキアコンに関するものである
。[Detailed Description of the Invention] The present invention relates to a so-called multi-separate room air conditioner in which a plurality of compressors are incorporated in an outdoor unit and a plurality of indoor units are connected to the outdoor unit.

従来の室外ユニットに３個の圧縮機を使用したセパレー
ト形ルームエアコンを第１図、第２図により説明する。A conventional separate room air conditioner using three compressors in an outdoor unit will be explained with reference to FIGS. 1 and 2.

１は室外ユニットで゛、第１乃至第３圧縮機２ａ、２ｂ
、３Ｃ，凝縮器３、室外ファンモータ４・および第１．
第２マグネットリレーコイル５ｂ、ｓｃ等より構成され
ている。1 is an outdoor unit, and the first to third compressors 2a, 2b
, 3C, condenser 3, outdoor fan motor 4, and first.
It is composed of second magnet relay coils 5b, sc, etc.

６ａ、６ｂ、６Ｃは第１乃至第３室内ユニツトで、それ
ぞれに第１乃至第３蒸発器７ａ、７ｂ、７Ｃ１第１乃至
第３キヤピラリチユーブ８ａ、８ｂ、８Ｃ１第１乃至第
３室内フアンモータ９ａ、９ｂ、９Ｃおよび第１乃至第
３操作スイッチ１０ａ、１０ｂ、１０Ｃ等よ
り構成されている。6a, 6b, 6C are first to third indoor units, respectively, first to third evaporators 7a, 7b, 7C1 first to third capillary tubes 8a, 8b, 8C1 first to third indoor fan motors. It is composed of 9a, 9b, 9C, first to third operation switches 10a, 10b, 10C, etc.

室外ユニット１と第１乃至第３室内ユニット６ａ、６ｂ
、６Ｃは第１乃至第６接続配管１１ａ、１１ａ’、１１
ｂ、１１ｂ’、１１Ｃ，１１Ｃ’で接続され、
室外ユニット１と第１乃至第３室内ユニツ）６ａ、６ｂ
。Outdoor unit 1 and first to third indoor units 6a, 6b
, 6C are the first to sixth connection pipes 11a, 11a', 11
b, 11 b', 11 C, 11C' connected,
outdoor unit 1 and first to third indoor units) 6a, 6b
.

６Ｃで３系統の独立した冷凍サイクルを形成している。6C forms three independent refrigeration cycles.

凝縮器３の内部の冷媒配管は、冷凍サイクル毎に独立し
ている。Refrigerant piping inside the condenser 3 is independent for each refrigeration cycle.

第１の室内ユニツ）６ａには第１室内フアンモータ９ａ
、第１操作スイッチ１０ａを有し、冷凍サイクルに対
応させて第１圧縮機２ａを接続し、電源部１２のＮ−Ｒ
相に結線されている。The first indoor fan motor 9a is installed in the first indoor unit) 6a.
, has a first operation switch 10a, connects the first compressor 2a corresponding to the refrigeration cycle, and connects the N-R of the power supply section 12.
wired to the phase.

同様に第２の室内ユニット６ｂには、第２室内フアンモ
ータ９ｂ、第２操作スイッチ１０ｂ、第２圧縮機２ｂが
あり、電源部１２のＮ−５相に、更に第３の室内ユニツ
）６Ｃには、第３室内ファンモータ９Ｃ１第３操作スイ
ッチ１０Ｃ１第３圧縮機２Ｃがあり電源部１２のＮ−Ｔ
相に接続され、且つ、Ｎ相を共通の相とするために接続
コード１３を設けている。Similarly, the second indoor unit 6b includes a second indoor fan motor 9b, a second operation switch 10b, and a second compressor 2b, and a third indoor unit) 6C is connected to the N-5 phase of the power supply section 12. , there is a third indoor fan motor 9C, a third operation switch 10C, and a third compressor 2C, and the N-T of the power supply unit 12 is installed.
A connection cord 13 is provided to be connected to the phases and to make the N phase a common phase.

また、室外ファンモータ４は、第２・第３の圧縮機２ｂ
、２Ｃに並列に接続された第１マグネツトリレーコイル
５ｂの逆接点Ａｆ−Ｂと、第２マグネツトリレーコイル
５Ｃの逆接点Ａ’−Ｂ’を介して第１の操作スイッチ１
０ａに、また第１正接点Ａ−Ｃ１第２正接点Ａ′−Ｃ
′を介して電源部１２に直接接続しである。Further, the outdoor fan motor 4 is connected to the second and third compressors 2b.
, 2C through the reverse contacts Af-B of the first magnetic relay coil 5b and the reverse contacts A'-B' of the second magnetic relay coil 5C.
0a, and the first positive contact point A-C1 and the second positive contact point A'-C
It is directly connected to the power supply unit 12 via '.

このものにあっては第１・第２・第３の操作スイッチ１
０ａ、１０ｂ、ｌＱｃを開閉することにより
第１・第２・第３の室内ファンモータ９ａ、９ｂ、９Ｃ
１第１・第２・第′３の圧縮機２ａ、２ｂ、２Ｃおよび
室外ファンモータを開閉できる。In this product, the first, second, and third operation switches 1
By opening and closing 0a, 10b, lQc, the first, second, and third indoor fan motors 9a, 9b, 9C
1. The first, second and '3rd compressors 2a, 2b, 2C and the outdoor fan motor can be opened and closed.

しかし、Ｎ線が切れていると、接続コード１３を通して
電流が回り込み、異常運転となる。However, if the N wire is cut, current will flow around through the connection cord 13, resulting in abnormal operation.

例えば、第１の操作スイッチ１０ａの第１の室内ファ
ンモータ９ａ用接点が閉じていて、第２の操作スイッチ
１０ｂの第２の圧縮機２ｂ、第２の室内ファンモータ
９ｂ用接点が閉じている場合、電流は室外ファンモータ
４と第１の室内ファンモータ９ａの並列回路を通して第
２の圧縮機２ｂ、第２の室内ファンモータ９ｂの並列回
路に流れ、Ｒ−５相の電圧がかかる。For example, the contact for the first indoor fan motor 9a of the first operation switch 10a is closed, and the contact for the second compressor 2b and second indoor fan motor 9b of the second operation switch 10b is closed. If so, the current flows through the parallel circuit of the outdoor fan motor 4 and the first indoor fan motor 9a to the parallel circuit of the second compressor 2b and the second indoor fan motor 9b, and the voltage of the R-5 phase is applied. .

各電気品の電気抵抗値も違い、異常電圧が印加されるこ
とになる。The electrical resistance values of each electrical item are also different, resulting in abnormal voltage being applied.

本考案は上段欠陥を改良するためになされたものである
。This invention was made to improve the upper stage defect.

即ち、圧縮機３個は星状にＲ，Ｓ、Ｔ線間に結線し、圧
縮機、ファンモータの制御スイッチは全てＮ−Ｒ相間に
並列に接続し、Ｎ相が切れていると圧縮機に直列に接続
した制御スイッチの接点が閉じず、電流の回り込みを防
ぐ回路としたものである。That is, the three compressors are connected in a star pattern between the R, S, and T wires, and the control switches for the compressor and fan motor are all connected in parallel between the N and R phases, and if the N phase is disconnected, the compressor This circuit prevents the contacts of the control switch connected in series from closing, preventing current from flowing around.

以下本考案を第３図に示す一実施例により説明する。The present invention will be explained below with reference to an embodiment shown in FIG.

従来例と同一符号のものは同一物を示すので説明を省略
する。Components with the same reference numerals as those in the conventional example indicate the same components, so explanations will be omitted.

第１・第２・第３の室内ファンモータ９ａ、９ｂ。First, second, and third indoor fan motors 9a, 9b.

９Ｃは接続コード１３．１３’によりＮ−Ｒ相間に互い
に並列に接続されている。9C are connected in parallel between the N and R phases by connection cords 13 and 13'.

１４はマグネットリレーコイル、１５ｂ、１５Ｃは第１
および第２のマグネットスイッチコイルでそれぞれ第１
・第２・第３の室内ファンモータ９ａ、９ｂ、９Ｃに並
列に接続されていて、第１・第２・第３の室内ファンモ
ータ９ａ。14 is a magnetic relay coil, 15b and 15C are the first
and the second magnetic switch coil respectively.
- The first, second, and third indoor fan motors 9a are connected in parallel to the second and third indoor fan motors 9a, 9b, and 9C.

９ｂ、９Ｃとマグネットリレー１４、第１マグネツトス
イツチ１５ｂおよび第２マグネツトスイツチ１５Ｃの間
には連動する接点を有する第１・第２・第３の操作スイ
ッチ１０ａ、１０ｂ、１０Ｃが接続されてお
り、マグネットリレー１４、第１マグネツトスイツチ１
５ｂおよび゛第２マグネットスイッチ１５Ｃの回路を単
独に、あるいは第１・第２・第３の室内ファンモータ９
ａ、９ｂ、９Ｃを同時に開閉する。First, second, and third operation switches 10a, 10b, and 10C having interlocking contacts are connected between the magnetic relays 14, the first magnetic switch 15b, and the second magnetic switch 15C. connected, magnetic relay 14, first magnetic switch 1
5b and the second magnetic switch 15C, or the circuits of the first, second, and third indoor fan motors 9.
Open and close a, 9b, and 9C at the same time.

第１の圧縮機２ａはＮ−Ｒ相に接続され第１の操作スイ
ッチ１０ａにより開閉される。The first compressor 2a is connected to the N-R phase and is opened and closed by a first operation switch 10a.

第２および第３の圧縮機２ｂ、２Ｃは第１マグネツトス
イツチ１５ｂおよび第２マグネツトスイツチ１５Ｃの
接点Ｆ−Ｇ、接点Ｆ’−Ｇ’を介してＮ−８，Ｎ−Ｔ相
に接続されており、第２・第３の操作スイッチ１０ｂ、
ＩＯＣにより第１マグネツトスイツチコイル１５ｂおよ
び第２マグネツトスイツチ１５Ｃの接点Ｆ−Ｇ、接点
Ｆ′−Ｇ’が開閉されることにより開閉される。The second and third compressors 2b and 2C are connected to the N-8 and NT phases through the contacts FG and F'-G' of the first magnetic switch 15b and the second magnetic switch 15C. are connected to the second and third operation switches 10b,
The IOC opens and closes the contacts FG and F'-G' of the first magnet switch coil 15b and the second magnet switch 15C.

室外ファンモータ４はＮ−Ｒ相に接続され、マグネット
ル−１４の接点Ａ−Ｂ、接点Ａ−Ｃ１第１マグネットス
イッチ１５ｂおよび第２マグネツトスイツチ１５Ｃの
接点Ｄ−Ｅ、接点Ｄ’−Ｅ’を介して電源部１２に接続
されている。The outdoor fan motor 4 is connected to the N-R phase, and the contacts A-B, A-C1, and D-E and D'- of the first magnet switch 15b and second magnet switch 15C are connected to the N-R phase. It is connected to the power supply section 12 via E'.

接点Ｆ−Ｇ、接点Ｆ’−Ｇ’は並列に接続されているの
で、第１マグネツトスイツチ１５ｂおよび第２マグネツ
トスイツチ１５Ｃのいずれかあるいは両方に通電され
ると、接点ＦＧおよび接点Ｆ’−Ｇ’のいずれかあるい
は両方が閉じ、マグネットリレー１４に通電されていな
いときはＡ−Ｂ接点が閉状態になるので、室外ファンモ
ータ４はＡ−Ｂ−Ｄ−Ｂ接点またはＡ−ＢＤ’−Ｅ’接
点を通じて電源部１７に接続される。Since the contacts FG and F'-G' are connected in parallel, when either or both of the first magnetic switch 15b and the second magnetic switch 15C is energized, the contacts FG and F' are connected in parallel. When one or both of '-G' is closed and the magnetic relay 14 is not energized, the A-B contact is in the closed state, so the outdoor fan motor 4 is connected to the A-B-D-B contact or the A-BD It is connected to the power supply unit 17 through the '-E' contact.

次に第１マグネツトスイツチ１５ｂ、第２マグネツトス
イツチ１５Ｃのいずれにも通電されない場合、接点Ｄ−
Ｅ、接点Ｄ’−Ｅ’は開し、マグネットリレー１４の通
電により接点Ａ−Ｃが閉じたときだけ室外ファンモータ
４は電源部１２に接続される。Next, if neither the first magnetic switch 15b nor the second magnetic switch 15C is energized, the contact D-
E, contacts D'-E' are opened, and outdoor fan motor 4 is connected to power supply section 12 only when contacts A-C are closed by energization of magnetic relay 14.

本実施例によれば、３個の第１乃至第３圧縮機を星状に
Ｎ−Ｒ，Ｎ−８，Ｎ−Ｔ相に結線し、圧縮機、室外ファ
ンモータ回路を制御するマグネットリレーと、第１およ
び第２マグネツトスイツチをＮ−Ｒ相に対して並列に接
続したので、Ｎ相が切れている場合は第１乃至第３操作
スイッチを閉じてもマグネットリレーと第１および第３
マグネツトスイツチに通電されず、第１乃至第２圧縮機
と、室外ファンモータ４の回路は閉じず異常運転を防止
できる。According to this embodiment, the three first to third compressors are connected in a star pattern in the N-R, N-8, and N-T phases, and a magnetic relay that controls the compressor and outdoor fan motor circuit is connected. , the first and second magnetic switches are connected in parallel to the N-R phase, so if the N phase is turned off, even if the first to third operation switches are closed, the magnetic relay and the first and third
Since the magnetic switch is not energized, the circuits of the first and second compressors and the outdoor fan motor 4 are not closed, thereby preventing abnormal operation.

以上述べた如く、Ｎ相が切れていても接続コードを通し
ての電流の回り込みはなく圧縮機ファンモータの焼損を
防止でき、安全性、信頼性の高いセパレート形空気調和
機の電気回路を提供できる。As described above, even if the N-phase is disconnected, current will not flow around through the connection cord, preventing burnout of the compressor fan motor, and providing a highly safe and reliable electric circuit for a separate air conditioner.

[Brief explanation of drawings]

第１図は従来および本考案の冷媒回路図、第２図は従来
のセパレート形空気調和機の電気回路図、第３図は本考
案の同電気回路図である。１・・・・・・室外ユニツ）、２ａ、２ｂ、２Ｃ・・・
・・・第１・第２・第３圧縮機、４・・・・・・室外フ
ァンモータ、６ａ、６ｂ。６Ｃ・・・・・・第１・第２・第３室内ユニツ）、９ａ
、９ｂ。９Ｃ・・・・・・第１・第２・第３室内フアンモータ、
１０ａ。１０ｂ、ＩＯＣ・・・・・・第１・第２・第３操作スイ
ッチ、１４・・・・・・マグネットリレー、１５ｂ
、１５ｃ・・・・・・第１および第２マグネツトスイ
ツチ。FIG. 1 is a refrigerant circuit diagram of the conventional and the present invention, FIG. 2 is an electric circuit diagram of a conventional separate type air conditioner, and FIG. 3 is an electric circuit diagram of the same according to the present invention. 1...Outdoor unit), 2a, 2b, 2C...
...First, second and third compressors, 4...Outdoor fan motors, 6a, 6b. 6C...1st, 2nd, 3rd indoor unit), 9a
, 9b. 9C...First, second and third indoor fan motors,
10a. 10b, IOC... 1st, 2nd, 3rd operation switch, 14... Magnet relay, 15 b
, 15c...first and second magnetic switches.

Claims

[Scope of utility model registration request]

■In a separate type air conditioner configured by connecting multiple indoor unit units to a single outdoor unit, the multiple compressors arranged in the outdoor unit are connected in a star shape to a 3-phase power supply, and the outdoor fan motor and multiple indoor fan motors are connected in parallel to each other between the N-R wires, and magnetic relay coils or magnetic switch coils are connected in parallel to the circuits of the plurality of indoor fan motors through respective operation switches, and the magnetic switch coils are connected in parallel to each other. A separate air conditioner characterized in that the contacts are connected in series to a compressor and an outdoor fan motor.