JPH0139020B2 - - Google Patents
Info
- Publication number
- JPH0139020B2 JPH0139020B2 JP56129370A JP12937081A JPH0139020B2 JP H0139020 B2 JPH0139020 B2 JP H0139020B2 JP 56129370 A JP56129370 A JP 56129370A JP 12937081 A JP12937081 A JP 12937081A JP H0139020 B2 JPH0139020 B2 JP H0139020B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- compressor
- signal
- control circuit
- power supply
- 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
Links
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 230000005856 abnormality Effects 0.000 description 16
- 230000001143 conditioned effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】
本発明は、能力制御可能な圧縮機を搭載した室
外ユニツトに室内ユニツトを接続して、空調室の
冷房もしくは暖房を行なうようにした分離形空気
調和装置に関するものである。[Detailed Description of the Invention] The present invention relates to a separate air conditioner in which an indoor unit is connected to an outdoor unit equipped with a compressor whose capacity can be controlled to cool or heat an air conditioned room. .
従来、一般に分離形空気調和装置の室外ユニツ
トの運転方法としては、
(i) 室内ユニツトから室外ユニツトに電源を接続
し、その電源をオンまたはオフとする方法、
(ii) 室外ユニツトから室内ユニツトに電源を供給
すると共に、室内ユニツトの信号で圧縮機の運
転を制御する方法、
(iii) 室外ユニツトは専用電源を有し、室内ユニツ
トからの低電圧の運転信号で専用電源のオン、
オフを制御する方法、
などがあつた。 Conventionally, the methods of operating the outdoor unit of a separate air conditioner are (i) connecting the power from the indoor unit to the outdoor unit and turning it on or off; (ii) connecting the power from the outdoor unit to the indoor unit. (iii) The outdoor unit has a dedicated power supply, and the dedicated power supply can be turned on using a low-voltage operation signal from the indoor unit;
There was a method to control off, etc.
これらのうち(i)及び(ii)は、室外ユニツト及び室
内ユニツトの電気配線は、商用電源の配線とな
り、このため配線工事が面倒であると共に、その
配線による他の機器へのノイズ障害を生じたりし
た。また(iii)の方法は、上記(i)、(ii)の問題点は解消
されるが、室内ユニツトからの運転信号のオン、
オフで室外ユニツトの電源が同時にオン、オフと
なる。しかし運転信号がオフとなつた後、所定の
制御動作を行なわせたい場合はこの方法では実現
出来ない。そのため室外ユニツトの制御回路を常
時通電しておく方法が採用されているものがある
が、この場合は、常時通電により機器の寿命やメ
ンテナンス時の安全性、あるいは省エネルギー面
で難点を有するものとなつた。 Of these, (i) and (ii) are that the electrical wiring for the outdoor unit and indoor unit is commercial power wiring, which makes wiring work troublesome and can cause noise interference to other equipment. It was. In addition, method (iii) solves the problems of (i) and (ii) above, but it does not turn on the operation signal from the indoor unit.
When set to OFF, the power to the outdoor unit turns on and off at the same time. However, if it is desired to perform a predetermined control operation after the operation signal is turned off, this method cannot be used. For this reason, some methods have been adopted to keep the control circuit of the outdoor unit energized at all times, but in this case, constant energization poses problems in terms of equipment lifespan, safety during maintenance, and energy conservation. Ta.
そこで本発明は、圧縮機の回転数を無段階また
は多段階に制御して快適性と省エネルギーを図る
と共に、従来の分離形空気調和装置における難
点、欠点を解消し、室内ユニツトと室内ユニツト
の電気配線を低圧のみとし、かつ圧縮機の能力制
御並びに安定した起動、停止動作を行なわせるよ
うにすると共に、また圧縮機の制御動作に異常が
生じ、その後の運転を停止させるべき場合は、室
外ユニツトを安定な通電状態として、機器の安全
性・信頼性を向上させることを目的とするもので
ある。 Therefore, the present invention aims at comfort and energy saving by controlling the rotation speed of the compressor steplessly or in multiple steps, and also solves the difficulties and drawbacks of conventional separate air conditioners, and improves indoor unit and indoor unit electricity consumption. Use only low voltage wiring to control the compressor's capacity and perform stable startup and shutdown operations.In addition, if an abnormality occurs in the compressor control operation and subsequent operation should be stopped, connect the outdoor unit to the The purpose is to improve the safety and reliability of equipment by keeping it in a stable energized state.
次に本発明の分離形空気調和装置を添付図面に
示す実施例に基づいて説明する。 Next, a separate air conditioner according to the present invention will be described based on embodiments shown in the accompanying drawings.
第１図は、空調室を冷房する場合の構成図であ
る。図において１は室外ユニツト、２は室内ユニ
ツトである。３は能力制御可能な圧縮機、４は室
外熱交換器、５は室外フアンである。６は冷媒の
絞り量を調節する膨張弁、７は室内熱交換器、８
は室内フアンであり、以上により冷媒サイクルを
形成する。９は室内ユニツト２の電源、１０は室
内制御回路、１１は室外ユニツト１の電源（ここ
では三相）、１２は室外制御回路である。 FIG. 1 is a configuration diagram when cooling an air conditioned room. In the figure, 1 is an outdoor unit, and 2 is an indoor unit. 3 is a compressor whose capacity can be controlled, 4 is an outdoor heat exchanger, and 5 is an outdoor fan. 6 is an expansion valve that adjusts the amount of throttling of refrigerant; 7 is an indoor heat exchanger; 8
is an indoor fan, and the above forms a refrigerant cycle. 9 is a power supply for the indoor unit 2, 10 is an indoor control circuit, 11 is a power supply (three-phase here) for the outdoor unit 1, and 12 is an outdoor control circuit.
次に第２図には、第１図の構成に伴なう電気回
路図を示す。図において、室内ユニツト２におい
て、１３は運転スイツチ、１４は直流電源回路で
あつて直流電源電圧を発する。１５は温度差信号
回路であり、１６は室温を検出する室温検出器、
１７は室温を設定する室温設定器であり、温度差
信号回路１５は室温と設定温度との差に応じた温
度差信号VTを発する。１８は異常表示回路であ
り、発光ダイオード（表示素子）１９を主体に構
成されている。 Next, FIG. 2 shows an electric circuit diagram associated with the configuration of FIG. 1. In the figure, in the indoor unit 2, 13 is an operation switch, and 14 is a DC power supply circuit, which generates a DC power supply voltage. 15 is a temperature difference signal circuit; 16 is a room temperature detector for detecting room temperature;
Reference numeral 17 denotes a room temperature setting device for setting the room temperature, and the temperature difference signal circuit 15 generates a temperature difference signal V T corresponding to the difference between the room temperature and the set temperature. Reference numeral 18 denotes an abnormality display circuit, which is mainly composed of a light emitting diode (display element) 19.
次に室外ユニツト１において、２０は直流電源
回路で直流電源電圧VCCを発する。２１は演算回
路でシーケンス制御等を行なうものである。２２
は自己保持回路であり、２３は自己保持用のリレ
ー（のコイル）、２４はその接点、２５はダイオ
ード、２６，２７はトランジスタ、２８はダイオ
ードである。更に、２９はリレー（のコイル）で
あり、３０はその接点、３１は接点３０により開
閉する開閉器である。リレー２９は開閉器３１の
補助リレーとして動作するものである。３２はリ
レー（のコイル）であり、３３はその接点であ
る。３４は圧縮機３の能力を無段階に制御する圧
縮機制御回路であり、圧縮機３の駆動用モータ
（図示せず）に給電して可変速駆動し、冷房能力
を変化させるようになしている。 Next, in the outdoor unit 1, a DC power supply circuit 20 generates a DC power supply voltage V CC . 21 is an arithmetic circuit that performs sequence control and the like. 22
is a self-holding circuit, 23 is a self-holding relay (coil thereof), 24 is its contact, 25 is a diode, 26 and 27 are transistors, and 28 is a diode. Furthermore, 29 is a relay (its coil), 30 is a contact thereof, and 31 is a switch which is opened and closed by the contact 30. The relay 29 operates as an auxiliary relay for the switch 31. 32 is a relay (its coil), and 33 is its contact. 34 is a compressor control circuit that continuously controls the capacity of the compressor 3, and supplies power to a drive motor (not shown) of the compressor 3 to drive it at variable speed, thereby changing the cooling capacity. There is.
次に動作を説明する。 Next, the operation will be explained.
まず室内ユニツト２において、運転スイツチ１
３をオンすると、電源９から通電されて、室内フ
アン８が回転し、また直流電源回路１４が直流電
源電圧を運転信号VDとして出力する。また温度
差信号回路１５は、室温と設定温度との差に比例
した温度差信号VTを発する。これら運転信号VD
および温度差信号VTは共に、室外制御回路１２
に入力される。 First, in indoor unit 2, turn on operation switch 1.
3 is turned on, power is supplied from the power supply 9, the indoor fan 8 rotates, and the DC power supply circuit 14 outputs the DC power supply voltage as the operation signal VD . Further, the temperature difference signal circuit 15 generates a temperature difference signal V T proportional to the difference between the room temperature and the set temperature. These driving signals V D
and the temperature difference signal V T are both the outdoor control circuit 12
is input.
そこで、室外制御回路１２において、運転信号
VDは、自己保持回路２２のダイオード２５を介
して、自己保持用のリレー２３に印加される。こ
れによりリレー２３が応動して、その接点２４が
閉となる。接点２４が閉となると、直流電源回路
２０は、通電されて直流電源電圧VCCを出力し、
演算回路２１および自己保持回路２２に印加す
る。演算回路２１は、運転信号VDを入力して、
その値がオン状態（ハイレベル）であるので、自
己保持信号VHをハイレベルで出力する。自己保
持信号VHは、一旦ハイレベルとなると、演算回
路２１の働きにより、運転信号VDがオフ状態と
なつてもすぐにはローレベルとならない。そこで
自己保持信号VHがハイレベルとなると、トラン
ジスタ２６および２７がオンとなり、ダイオード
２８を介して直流電源電圧VCCがリレー２３に印
加され、この結果、リレー２３はその後自己保持
状態となり、オン状態を維持する。そして接点２
４が閉のままであるので、室外制御回路１２は電
源１１からの通電状態が保たれる。 Therefore, in the outdoor control circuit 12, the operation signal
V D is applied to the self-holding relay 23 via the diode 25 of the self-holding circuit 22 . This causes the relay 23 to respond and its contact 24 to close. When the contact 24 is closed, the DC power supply circuit 20 is energized and outputs the DC power supply voltage V CC .
It is applied to the arithmetic circuit 21 and the self-holding circuit 22. The arithmetic circuit 21 inputs the operation signal V D and
Since the value is in the on state (high level), the self-holding signal V H is output at high level. Once the self-holding signal V H becomes a high level, due to the operation of the arithmetic circuit 21, it does not immediately become a low level even when the operation signal V D is turned off. Therefore, when the self-holding signal V H becomes high level, the transistors 26 and 27 are turned on, and the DC power supply voltage V CC is applied to the relay 23 via the diode 28. As a result, the relay 23 becomes the self-holding state and turns on. maintain the condition. and contact 2
4 remains closed, the outdoor control circuit 12 remains energized by the power source 11.
次に演算回路２１はリレー２９をオンとし、そ
の接点３０を閉とし、開閉器３１をオンとし、圧
縮機制御回路３４に通電させる。以上の動作によ
り、圧縮機３を運転する体制を形成することにな
る。 Next, the arithmetic circuit 21 turns on the relay 29, closes its contact 30, turns on the switch 31, and energizes the compressor control circuit 34. The above operations form a system for operating the compressor 3.
一方温度差信号VTは運転信号VD同様、演算回
路２１に入力され、この演算回路２１において、
圧縮機３の可変速駆動に適した信号（回転数設定
信号）VNに変換され、この回転数設定信号VNに
応じて圧縮機制御回路３４が圧縮機３を可変速駆
動する。圧縮機３の可変速駆動方法として、圧縮
機制御回路３４を可変周波数電源の構成をとり、
回転数設定信号VNに対応して出力周波数を制御
するようにしている。 On the other hand, the temperature difference signal V T is input to the arithmetic circuit 21 like the operating signal V D , and in this arithmetic circuit 21,
It is converted into a signal (rotation speed setting signal) VN suitable for variable speed driving of the compressor 3, and the compressor control circuit 34 drives the compressor 3 at variable speed in accordance with this rotation speed setting signal VN . As a variable speed drive method for the compressor 3, the compressor control circuit 34 is configured as a variable frequency power supply,
The output frequency is controlled in response to the rotation speed setting signal VN .
また圧縮機３の発停動作は、いわゆるソフトス
タート・ソフトストツプ即ち起動、停止時ゆるや
かに速度を変化させて、機器の安全性と騒音の低
減化を図つている。 Furthermore, the starting and stopping operations of the compressor 3 are performed in a so-called soft start/soft stop, that is, by gently changing the speed at the time of starting and stopping, in order to improve the safety of the equipment and reduce noise.
この圧縮機３の回転している間は、室外フアン
５を運転するため、演算回路２１は、圧縮機３へ
の回転数設定信号VNに連動して、リレー３２を
オンまたはオフとし、その接点３３を開閉して、
室外フアン５を制御している。 In order to operate the outdoor fan 5 while the compressor 3 is rotating, the arithmetic circuit 21 turns on or off the relay 32 in conjunction with the rotation speed setting signal VN to the compressor 3. Opening and closing the contact 33,
The outdoor fan 5 is controlled.
このような動作により、圧縮機３の回転数を温
度差信号VTに対応するように制御することによ
り、空調室の室温を設定温度に等しく維持するこ
とになる。 By controlling the rotation speed of the compressor 3 in accordance with the temperature difference signal V T by such an operation, the room temperature of the air conditioned room is maintained equal to the set temperature.
なお、演算回路２１は、圧縮機３を運転状態か
ら停止状態とするような回転数設定信号VNを発
した場合は、その後例えば１分間は、温度差信号
VTの値にかかわらず、圧縮機３の停止状態を維
持させるようにしている。これは、冷媒サイクル
がほぼ平衡に達するまでに圧縮機３を再起動しよ
うとしても、必要な起動トルクが過大となり、起
動し得ない状態となり得るためであり、機器の安
全上、このような停止時間を設ける訳である。 Note that when the arithmetic circuit 21 issues a rotation speed setting signal V N that changes the compressor 3 from an operating state to a stopped state, the calculation circuit 21 outputs a temperature difference signal for, for example, one minute thereafter.
Regardless of the value of V T , the compressor 3 is kept in a stopped state. This is because even if an attempt is made to restart the compressor 3 before the refrigerant cycle reaches almost equilibrium, the required starting torque will be excessive and the system may not be able to start. This means setting aside time.
以上の動作を行なつていた後に、空調室の冷房
運転が不要となり、室内ユニツト２における運転
スイツチ１３をオフとすると、運転信号VD及び
温度差信号VTが零となる。そこで演算回路２１
は圧縮機３を停止すべく回転数設定信号VNを圧
縮機制御回路３４に発すると、圧縮機３は徐々に
回転数が低下して、ついに停止する。その後、前
述の冷媒サイクルがほぼ平衡に達する時間例えば
１分間を経過した時、演算回路２１は、リレー２
９をオフとすると共に自己保持信号VHをローレ
ベルとする。これにより、トランジスタ２６及び
２７がオフとなり、リレー２３はもはや通電され
ないため、その接点２４が開となる。この結果、
室外制御回路１２は接点２４及び３０が開である
ため、完全にその電源がしや断されて、全く停止
の状態となる。その後再び室内ユニツト２の運転
スイツチ１３が投入されると前述と同様の動作を
行なうことになる。 After performing the above operations, the cooling operation of the air conditioned room becomes unnecessary, and when the operation switch 13 in the indoor unit 2 is turned off, the operation signal V D and the temperature difference signal V T become zero. Therefore, the arithmetic circuit 21
issues a rotation speed setting signal V N to the compressor control circuit 34 to stop the compressor 3, the rotation speed of the compressor 3 gradually decreases and finally stops. Thereafter, when the time for which the refrigerant cycle described above reaches almost equilibrium has elapsed, for example, one minute, the arithmetic circuit 21 causes the relay 2
9 is turned off and the self-holding signal VH is set to low level. This turns off transistors 26 and 27 and relay 23 is no longer energized, so its contacts 24 are open. As a result,
Since the contacts 24 and 30 of the outdoor control circuit 12 are open, the power supply to the outdoor control circuit 12 is completely cut off and the circuit is completely stopped. Thereafter, when the operation switch 13 of the indoor unit 2 is turned on again, the same operation as described above will be performed.
以上は通常の運転動作であるが、次に、圧縮機
制御回路３４は、圧縮機３の駆動用モータの巻線
の短絡や、機械的ロツクあるいは、圧縮機制御回
路３４の自らの故障等により過電流を検知する過
電流検知回路を具備している。そこでこの過電流
検知回路が過電流を検知した異常時は、圧縮機制
御回路３４自体で瞬時に圧縮機３への給電を停止
し、その構成部品である半導体等への故障の拡大
を防止すると共に、演算回路２１に異常信号VP
を発する。演算回路２１は、この異常信号VPを
入力すると、リレー２９をオフし、その接点３０
を開として、圧縮機制御回路３４への電源を完全
にオフとすると共に、異常表示信号VLを室内ユ
ニツト２へ出力し、かつ自己保持信号VHをその
後運転信号VDが零となつても常にハイレベルの
ままに維持する。この動作により、室内ユニツト
２に設けられた異常表示回路１８における発光ダ
イオード１９が異常表示信号VLに応じて駆動さ
れる。例えば異常表示信号VLを所定の周期でハ
イ、ローとすると、発光ダイオード１９はそれに
従つて点滅し、室外ユニツト１に異常が生じたこ
とを表示する。この表示により、空調室で異常を
認識できると共に、その後運転スイツチ１３をオ
ンまたはオフとしても、室外制御回路１２は常に
通電状態であり、且つ圧縮機３への給電は全く行
なわず安全であると共に運転スイツチ１３投入時
は必ず、この発光ダイオード１９により異常を表
示するため、室外ユニツト１の点検の必要性を訴
えることができる。そこで、この状態に陥つた場
合は、室外ユニツト１の電源１１の手元開閉器等
を開として電源をしや断し、点検を行なうように
するものである。もし一旦電源１１を開とした
後、再度閉じた場合は、電源スイツチ１３の投入
により、室外制御回路１２に通電され、かつ圧縮
機制御回路３４にも再通電されることになるが、
異常の原因がとり除かれていなければ、再び異常
信号VPが発せられて同様の異常状態となる。し
かし、この動作は、室内ユニツト２の運転スイツ
チ１３のオンまたはオフではなく、比較的めんど
うな電源１１のオンまたはオフにより行なわれる
ため、過度にくり返されることはなく、故障の拡
大を最小限に止めるのに極めて効果的である。 The above is a normal operation, but next, the compressor control circuit 34 may be damaged due to a short circuit in the windings of the drive motor of the compressor 3, a mechanical lock, or a failure of the compressor control circuit 34 itself. Equipped with an overcurrent detection circuit that detects overcurrent. Therefore, in the event of an abnormality in which this overcurrent detection circuit detects an overcurrent, the compressor control circuit 34 itself instantly stops power supply to the compressor 3 to prevent the spread of failure to its component parts such as semiconductors. At the same time, an abnormal signal V P is sent to the arithmetic circuit 21.
emits. When the arithmetic circuit 21 receives this abnormal signal VP , it turns off the relay 29 and closes its contact 30.
is opened to completely turn off the power to the compressor control circuit 34, output the abnormality display signal VL to the indoor unit 2, and output the self-hold signal VH to the indoor unit 2, and then output the self-holding signal VH until the operation signal VD becomes zero. is always maintained at a high level. By this operation, the light emitting diode 19 in the abnormality display circuit 18 provided in the indoor unit 2 is driven in accordance with the abnormality display signal VL . For example, when the abnormality display signal VL is set high and low at a predetermined period, the light emitting diode 19 blinks accordingly, indicating that an abnormality has occurred in the outdoor unit 1. With this display, it is possible to recognize an abnormality in the air conditioned room, and even if the operation switch 13 is subsequently turned on or off, the outdoor control circuit 12 is always energized and no power is supplied to the compressor 3, making it safe. Whenever the operation switch 13 is turned on, the light emitting diode 19 indicates an abnormality, so that the need for inspection of the outdoor unit 1 can be appealed to. Therefore, if this situation occurs, the operator should open the hand switch of the power source 11 of the outdoor unit 1 to shut off the power and conduct an inspection. If the power supply 11 is once opened and then closed again, the outdoor control circuit 12 will be energized and the compressor control circuit 34 will also be energized again by turning on the power switch 13.
If the cause of the abnormality is not removed, the abnormality signal V P is issued again and the same abnormal condition occurs. However, since this operation is performed not by turning on or off the operation switch 13 of the indoor unit 2, but by turning on or off the power supply 11, which is relatively troublesome, it is not repeated excessively, and the expansion of the failure can be minimized. It is extremely effective in stopping.
以上本発明の分離形空気調和装置を添付図面に
基づいて説明したが、以下に述べる構成であつて
も同様の効果を奏するものである。 Although the separate air conditioner of the present invention has been described above with reference to the accompanying drawings, similar effects can be achieved with the configurations described below.
(1) 冷房専用のみならず、ヒートポンプ式であつ
ても良い。この場合冷・暖房の切替に応じて、
低圧の信号を室内ユニツト２から室外ユニツト
１に発して、冷媒サイクルにおける四方弁等の
切替の制御を行なえばよい。(1) Not only for cooling, but also for heat pump type. In this case, depending on the switching between cooling and heating,
A low pressure signal may be sent from the indoor unit 2 to the outdoor unit 1 to control switching of the four-way valve, etc. in the refrigerant cycle.
(2) 圧縮機制御回路３４は、可変周波数電源の構
成による他、圧縮機３の駆動用モータを直流モ
ータとして、いわゆるトランジスタモータ等と
呼ばれる構成で連続可変速駆動することが可能
である。また、圧縮機３を連続変速駆動する以
外に、多段階に回転数を変化させて能力を制御
する方法も可能である。(2) In addition to being configured with a variable frequency power source, the compressor control circuit 34 can drive the compressor 3 at a continuously variable speed by using a DC motor as a so-called transistor motor or the like. In addition to driving the compressor 3 at continuously variable speeds, it is also possible to control the capacity by changing the rotation speed in multiple stages.
(3) 本装置は、室外ユニツト１および室内ユニツ
ト２がそれぞれ１台の場合について説明した
が、１台の室外ユニツトに複数台の室内ユニツ
トを接続して成る、いわゆる多室形の場合であ
つても実現しうる。この場合、運転信号VDは、
それぞれの室内ユニツトから出力し、それらの
論理和によつて、自己保持用のリレー２３をオ
ンとさせるようにすると共に、温度差信号VT
は、それらの和または平均値、あるいは最大値
など、使用対象に適した処理をして、回転数設
定信号VNに変換することが望ましい。また異
常表示回路１８は、必らずしもすべての室内ユ
ニツトに設ける必要もないが、すべてに設ける
方がいづれの空調室からも異常を認識し得るも
のとなり、使用上便利となる。(3) This device has been described for the case where there is one outdoor unit 1 and one indoor unit 2, but it also applies to a so-called multi-room type where multiple indoor units are connected to one outdoor unit. However, it can be realized. In this case, the operating signal V D is
The temperature difference signal V
It is desirable to convert them into the rotational speed setting signal V N by processing the sum, average value, maximum value, etc. of them in a manner appropriate for the intended use. Further, although it is not necessary to provide the abnormality display circuit 18 in all indoor units, it is more convenient to use the circuit by providing the abnormality display circuit 18 in all the air conditioned rooms, since the abnormality can be recognized from any air conditioned room.
以上の通りであるから、本発明は次のような優
れた効果を奏する。 As described above, the present invention has the following excellent effects.
(イ) 室外ユニツトと室内ユニツトは、それぞれ互
いに独立した電源を具えているので、室外と室
内とを通ずる商用電源の配線が不用となり、配
線工事を簡単とし、且つ配線による他の機器へ
のノイズを避けることができる。(b) Since the outdoor unit and the indoor unit are each equipped with an independent power supply, there is no need for commercial power wiring between the outdoor and indoor units, which simplifies the wiring work and reduces noise caused by wiring to other equipment. can be avoided.
(ロ) 室外ユニツトと室内ユニツトとを商用電源か
ら絶縁された低電圧の配線により接続されてい
るので、商用電源用の配線による障害を避ける
ことができるとともに、各フアンや圧縮機の停
止後も所定時間自己保持させることが容易にで
きる。(b) Since the outdoor unit and indoor unit are connected by low-voltage wiring insulated from the commercial power supply, it is possible to avoid problems caused by the commercial power supply wiring, and even after each fan or compressor is stopped. It can easily be self-retained for a predetermined period of time.
(ハ) 通常運転時室内側からの運転停止信号があつ
ても室外側の電源は直ちに遮断されず、所定時
間後に遮断されるので、演算回路が所定時間通
電されていて、室内側からの運転停止信号後直
ちに再び運転信号が送られても、圧縮機が直ち
に再起動することがない。(c) During normal operation, even if there is an operation stop signal from the indoor side, the power to the outdoor side is not cut off immediately, but is cut off after a predetermined period of time. Even if the operation signal is sent again immediately after the stop signal, the compressor does not restart immediately.
(ニ) 異常時には圧縮機制御回路自体によつて圧縮
機を停止せしめて演算回路は通電された状態に
あるので、圧縮機は直ちに停止する一方、前記
(ハ)項の場合と同様圧縮機が直ちに再起動するこ
とはない。(d) In the event of an abnormality, the compressor is stopped by the compressor control circuit itself and the arithmetic circuit is energized, so the compressor stops immediately while the
As in the case of (c), the compressor will not restart immediately.
第１図は本発明に基づく分離形空気調和装置の
一実施例を示す構成図、第２図は、第１図の装置
の電気回路図である。
１……室外ユニツト、２……室内ユニツト、３
……圧縮機、４……室外熱交換器、７……室内熱
交換器、９……電源（室内ユニツト側）、１０…
…室内制御回路、１１……電源（室外ユニツト
側）、１２……室外制御回路、１３……運転スイ
ツチ、２１……演算回路、２２……自己保持回
路、２３……リレー（自己保持用）、２９……リ
レー（開閉器３１の補助リレー）、３４……圧縮
機制御回路、VD……運転信号、VT……温度差信
号、VH……自己保持信号、VN……回転数設定信
号、VP……異常信号。
FIG. 1 is a block diagram showing an embodiment of a separate air conditioner according to the present invention, and FIG. 2 is an electrical circuit diagram of the device shown in FIG. 1...Outdoor unit, 2...Indoor unit, 3
...Compressor, 4...Outdoor heat exchanger, 7...Indoor heat exchanger, 9...Power source (indoor unit side), 10...
... Indoor control circuit, 11 ... Power supply (outdoor unit side), 12 ... Outdoor control circuit, 13 ... Operation switch, 21 ... Arithmetic circuit, 22 ... Self-holding circuit, 23 ... Relay (for self-holding) , 29... Relay (auxiliary relay for switch 31), 34... Compressor control circuit, V D ... Operating signal, V T ... Temperature difference signal, V H ... Self-holding signal, V N ... Rotation Number setting signal, V P ...abnormal signal.
Claims (1)
離形空気調和装置において、 室内ユニツト２は、直流電源回路１４と、室温
と設定温度との差に対応する信号を発生する温度
差信号回路１５とを具え、 室外ユニツト１は、直流電源回路２０と、演算
回路２１と、自己保持回路２２と、圧縮機制御回
路３４とを具え、 圧縮機制御回路３４は、圧縮機３を可変速駆動
する手段と異常状態発生時異常信号を演算回路２
１に出力する手段とを具え、 自己保持回路２２は室内ユニツト２の直流電源
回路１４からの運転信号VDに応動して直流電源
回路２０を付勢して自己保持する手段を有し、 演算回路２１は運転信号VDに応じて圧縮機３
を起動および停止させる手段と、運転信号VD遮
断後一定時間経過したとき、自己保持回路２２の
保持動作を解除する手段と、温度差信号回路１５
の出力VTに対応して圧縮機制御回路３４の圧縮
機駆動周波数を制御する手段と、異常状態発生時
に直ちに圧縮機制御回路３４を遮断させ所定時間
その状態を維持させる手段とを具えている ことを特徴とする分離形空気調和装置。[Claims] 1. In a separate air conditioner consisting of an outdoor unit 1 and an indoor unit 2, the indoor unit 2 has a DC power supply circuit 14 and a temperature difference generator that generates a signal corresponding to the difference between the room temperature and the set temperature. The outdoor unit 1 includes a DC power supply circuit 20, an arithmetic circuit 21, a self-holding circuit 22, and a compressor control circuit 34, and the compressor control circuit 34 controls the compressor 3. Means for variable speed driving and a calculation circuit 2 for generating an abnormal signal when an abnormal condition occurs
The self-holding circuit 22 has means for self-holding by energizing the DC power supply circuit 20 in response to the operation signal V D from the DC power supply circuit 14 of the indoor unit 2. The circuit 21 operates the compressor 3 in response to the operation signal VD.
means for starting and stopping the operation signal VD , means for releasing the holding operation of the self-holding circuit 22 when a certain period of time has elapsed after the operation signal VD was cut off, and a temperature difference signal circuit 15.
means for controlling the compressor drive frequency of the compressor control circuit 34 in response to the output V T of the compressor control circuit 34, and means for immediately shutting off the compressor control circuit 34 when an abnormal state occurs and maintaining that state for a predetermined period of time. A separate air conditioner characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56129370A JPS5833039A (en) | 1981-08-20 | 1981-08-20 | Split type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56129370A JPS5833039A (en) | 1981-08-20 | 1981-08-20 | Split type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5833039A JPS5833039A (en) | 1983-02-26 |
| JPH0139020B2 true JPH0139020B2 (en) | 1989-08-17 |
Family
ID=15007896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56129370A Granted JPS5833039A (en) | 1981-08-20 | 1981-08-20 | Split type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833039A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032772A (en) * | 1989-12-04 | 1991-07-16 | Gully Wilfred J | Motor driver circuit for resonant linear cooler |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5255245A (en) * | 1975-10-28 | 1977-05-06 | Carrier Corp | Safety device for electric motor |
| JPS5346150A (en) * | 1976-10-07 | 1978-04-25 | Matsushita Electric Ind Co Ltd | Heat source structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140948U (en) * | 1979-03-28 | 1980-10-08 |
-
1981
- 1981-08-20 JP JP56129370A patent/JPS5833039A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5255245A (en) * | 1975-10-28 | 1977-05-06 | Carrier Corp | Safety device for electric motor |
| JPS5346150A (en) * | 1976-10-07 | 1978-04-25 | Matsushita Electric Ind Co Ltd | Heat source structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5833039A (en) | 1983-02-26 |
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