JPH09210519A - Control device for air-conditioner - Google Patents
Control device for air-conditionerInfo
- Publication number
- JPH09210519A JPH09210519A JP8021056A JP2105696A JPH09210519A JP H09210519 A JPH09210519 A JP H09210519A JP 8021056 A JP8021056 A JP 8021056A JP 2105696 A JP2105696 A JP 2105696A JP H09210519 A JPH09210519 A JP H09210519A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- temperature
- abnormality
- unit
- 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.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、空気調和機の制御装置
に係わり、とくにサーモスタット等の機械的接点を有す
る圧縮機の、同接点動作を制御部に知らせるものに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner, and more particularly to a device for informing a control unit of the contact operation of a compressor having a mechanical contact such as a thermostat.
【0002】[0002]
【従来の技術】従来、図1の冷凍サイクル図に示すよう
に、圧縮機1、四方弁2、室外熱交換器3、減圧器4、
および室内熱交換器5等を順次連通してなるヒートポン
プ式冷凍サイクルを備えた空気調和機の制御装置は、図
7のブロック図に示すように、室内設定温度(Ts)等
を入力する操作部11と、設定温度等を表示する表示部
12と、室内温度(Tr)を検出する室内温度検出器1
3と、前記室内熱交換器5の送風ファン7を駆動する送
風ファン駆動部14と、室内の各部を制御する室内制御
部15と、室外制御部と信号の受渡しを行う通信部16
と、前記室外制御部17と、前記室外熱交換器3の送風
ファンを駆動する送風ファン駆動部18と、前記圧縮機
1の温度を検出する温度検出器19と、同圧縮機1を駆
動する圧縮機駆動部20とで構成しており、前記圧縮機
1には温度により電源を開閉するサーモスタット21を
備えている。通常の運転においては、前記室内温度検出
器13よりの室内温度(Tr)と、操作部11より入力
した室内設定温度(Ts)との差(負荷)に応じて前記
圧縮機1および室外熱交換器3の送風ファン6を断続し
て室内温度(Tr)が設定温度(Ts)に達するように
制御している。2. Description of the Related Art Conventionally, as shown in a refrigeration cycle diagram of FIG. 1, a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a pressure reducer 4,
As shown in the block diagram of FIG. 7, the control device of the air conditioner including the heat pump refrigeration cycle in which the indoor heat exchanger 5 and the like are sequentially connected is an operation unit for inputting the indoor set temperature (Ts) and the like. 11, a display unit 12 that displays a set temperature and the like, and an indoor temperature detector 1 that detects an indoor temperature (Tr)
3, an air blowing fan driving unit 14 that drives the air blowing fan 7 of the indoor heat exchanger 5, an indoor control unit 15 that controls each unit in the room, and a communication unit 16 that exchanges signals with the outdoor control unit.
And the outdoor control unit 17, a blower fan drive unit 18 that drives a blower fan of the outdoor heat exchanger 3, a temperature detector 19 that detects the temperature of the compressor 1, and the compressor 1. The compressor 1 is provided with a thermostat 21 that opens and closes a power source depending on the temperature. In normal operation, the compressor 1 and the outdoor heat exchange are performed according to the difference (load) between the indoor temperature (Tr) from the indoor temperature detector 13 and the indoor set temperature (Ts) input from the operation unit 11. The blower fan 6 of the device 3 is intermittently controlled so that the room temperature (Tr) reaches the set temperature (Ts).
【0003】このとき、何らかの原因で圧縮機1の温度
が上昇し、前記温度検出器19の検出温度(Tc)が所
定の温度(Tcs)を越えると、圧縮機1の破損を防ぐ
ため、異常と判断して表示部に異常を表示するととも
に、前記圧縮機1および室外熱交換機3の送風ファン6
を停止させている。さらに、前記温度検出器19の故障
等で、圧縮機1の温度が所定の温度(Tcs)以上に上
昇しても温度検出器19の検出温度(Tc)が上昇しな
かった場合は、圧縮機1の破損を防ぐため、前記サーモ
スタット21が作動して、圧縮機1の電源を遮断するよ
うにしている。At this time, if the temperature of the compressor 1 rises for some reason and the temperature (Tc) detected by the temperature detector 19 exceeds a predetermined temperature (Tcs), damage to the compressor 1 is prevented, and an abnormality occurs. And the abnormality is displayed on the display unit, and the blower fan 6 of the compressor 1 and the outdoor heat exchanger 3
Has been stopped. Further, if the temperature (Tc) detected by the temperature detector 19 does not rise even if the temperature of the compressor 1 rises above a predetermined temperature (Tcs) due to a failure of the temperature detector 19, the compressor In order to prevent the damage of the compressor 1, the thermostat 21 is operated to shut off the power of the compressor 1.
【0004】しかしながら、上述のように温度検出器1
9の故障等があり、しかもサーモスタット21が作動し
て、圧縮機1が停止した場合、これを知る手段がないた
め、正常と判断され、表示部に異常が表示されず、ま
た、室外送風ファン6も動作したままとなり、室内温度
は冷房時は異常上昇し、暖房時は異常下降してしまうと
いう問題があった。However, as described above, the temperature detector 1
If there is a failure of 9 and the thermostat 21 operates and the compressor 1 stops, there is no means to know this, so it is judged as normal, no abnormality is displayed on the display unit, and the outdoor blower fan 6 also remains in operation, and there is a problem that the room temperature rises abnormally during cooling and falls abnormally during heating.
【0005】[0005]
【発明が解決しようとする課題】本発明は以上述べた問
題点を解決し、圧縮機に備えたサーモスタット等の機械
的接点が作動しても、これを検出する手段を設け、表示
部に異常を表示するとともに、室外送風ファンを停止す
るようにした空気調和機の制御装置を提供することを目
的としている。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and even if a mechanical contact such as a thermostat provided in a compressor is operated, a means for detecting this is provided and an abnormality is displayed on the display section. It is intended to provide a control device for an air conditioner, which displays, and stops the outdoor blower fan.
【0006】[0006]
【課題を解決するための手段】本発明は上述の課題を解
決するため、圧縮機、四方弁、室外熱交換器、減圧器、
および室内熱交換器等を順次連通してなるヒートポンプ
式冷凍サイクルを備え、負荷に応じて前記圧縮機の運転
を断続制御するものであって、室内機には室内設定温度
等を入力する操作部と、設定温度等を表示する表示部
と、室内温度を検出する室内温度検出器と、前記室内熱
交換器の送風ファンを駆動する送風ファン駆動部と、室
内の各部を制御する室内制御部と、同室内制御部と室外
制御部と信号を送受する通信部とを備え、室外機には、
前記室外制御部と、前記室外熱交換器の送風ファンを駆
動する送風ファン駆動部と、前記圧縮機の温度を検出す
る温度検出器と、同圧縮機を駆動する圧縮機駆動部とを
備えており、前記圧縮機には温度により開閉するサーモ
スタット等の機械的接点が設けられるとともに、同圧縮
機の温度を検出する温度検出器を備え、同検出温度が所
定の設定値を越えると前記圧縮機の運転および室外熱交
換器の送風ファンを停止して圧縮機の保護動作を行う空
気調和機において、前記圧縮機の電源線に挿入されたサ
ーモスタット等の機械的接点の動作を検出する異常検出
手段を設け、同異常検出手段がサーモスタット等の機械
的接点の作動を検出すると、室外送風ファンを停止し、
また、異常を表示する異常表示部を設け、前記異常検出
手段がサーモスタット等の機械的接点の作動を検出する
と室外送風ファンを停止するとともに、圧縮機が異常で
あることを前記異常表示部に表示するようにした。In order to solve the above problems, the present invention provides a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducer,
And a heat pump type refrigeration cycle in which an indoor heat exchanger and the like are sequentially communicated with each other to intermittently control the operation of the compressor according to a load, and an operation unit for inputting an indoor set temperature or the like to the indoor unit A display unit that displays a set temperature, an indoor temperature detector that detects an indoor temperature, a blower fan drive unit that drives a blower fan of the indoor heat exchanger, and an indoor control unit that controls each unit in the room. The indoor unit includes an indoor control unit, an outdoor control unit, and a communication unit that transmits and receives signals.
The outdoor control unit, a blower fan drive unit that drives a blower fan of the outdoor heat exchanger, a temperature detector that detects the temperature of the compressor, and a compressor drive unit that drives the compressor. The compressor is provided with a mechanical contact such as a thermostat that opens and closes depending on the temperature, and is equipped with a temperature detector for detecting the temperature of the compressor. When the detected temperature exceeds a predetermined set value, the compressor is Abnormality detection means for detecting the operation of a mechanical contact such as a thermostat inserted in the power supply line of the compressor in an air conditioner that performs the operation of 1) and stops the blower fan of the outdoor heat exchanger to protect the compressor. When the abnormality detection means detects the operation of a mechanical contact such as a thermostat, the outdoor blower fan is stopped,
Further, an abnormality display section for displaying an abnormality is provided, and when the abnormality detection means detects the operation of a mechanical contact such as a thermostat, the outdoor blower fan is stopped and the abnormality display section displays that the compressor is abnormal. I decided to do it.
【0007】また、前記異常検出手段を、前記室内熱交
換器の配管温度を検出する配管温度検出器と、同配管温
度検出器の検出した検出温度の勾配を検出する勾配検出
部と、冷房運転または暖房運転であることを知る冷暖房
信号を入力する冷暖房信号入力部と、前記勾配検出部よ
りの勾配検出信号と冷暖房信号入力部よりの冷暖房信号
から異常を判定する異常判定部とで構成し、冷房運転時
に勾配検出信号が所定の正勾配値以上であると異常、ま
た、暖房運転時に勾配検出信号が所定の負勾配値以下で
あると異常と判定するようにしている。Further, the abnormality detecting means includes a pipe temperature detector for detecting a pipe temperature of the indoor heat exchanger, a gradient detecting unit for detecting a gradient of the detected temperature detected by the pipe temperature detector, and a cooling operation. Alternatively, the cooling and heating signal input section for inputting a cooling and heating signal to know that it is heating operation, and an abnormality determination section for determining an abnormality from the gradient detection signal from the gradient detection section and the cooling and heating signal from the cooling and heating signal input section, An abnormality is determined when the gradient detection signal is equal to or higher than a predetermined positive gradient value during the cooling operation, and an abnormality is determined when the gradient detection signal is equal to or lower than a predetermined negative gradient value during the heating operation.
【0008】また、前記異常検出手段を、前記圧縮機の
オン・オフ信号を入力するオン・オフ信号入力部と、前
記圧縮機の電流を検出する電流検出部と、異常判定部と
で構成し、圧縮機がオン時、圧縮機の電流が流れていな
いと異常と判定するようにしている。The abnormality detecting means is composed of an ON / OFF signal input section for inputting an ON / OFF signal of the compressor, a current detecting section for detecting the current of the compressor, and an abnormality judging section. When the compressor is on, it is determined to be abnormal if the current of the compressor is not flowing.
【0009】また、前記異常判定部を、予め、前記勾配
検出信号と冷暖房信号に対する判定結果を記憶する判定
テーブルで構成している。Further, the abnormality judging section is constituted beforehand by a judgment table for storing the judgment results for the gradient detection signal and the cooling / heating signal.
【0010】また、前記異常表示部を、前記室内熱交換
機の送風ファン等を制御する室内制御部に接続する遠隔
装置に設けている。Further, the abnormality display section is provided in a remote device connected to an indoor control section for controlling a blower fan of the indoor heat exchanger.
【0011】[0011]
【作用】以上のように構成したので、本発明の空気調和
機の制御装置によれば、室内温度(Tr)と設定温度
(Ts)との差(負荷)に応じて前記圧縮機の運転を断
続することにより、室内温度(Tr)を設定温度(T
s)になるように制御し、圧縮機の検出温度が所定の設
定値を越えると同圧縮機および室外熱交換器の送風ファ
ンの運転を停止して圧縮機の保護動作を行うが、圧縮機
の温度検出器等の故障した場合でも、サーモスタット等
の機械的接点が作動すると、異常検出手段が室内熱交換
器の配管温度の勾配検出信号と冷暖房信号から異常を検
出するか、前記圧縮機動作中の電源電流の遮断を検出す
ることにより異常を検出し、異常であることを表示部に
表示するとともに室外送風ファンを停止するようにして
いる。With the above configuration, the control device for an air conditioner according to the present invention operates the compressor according to the difference (load) between the room temperature (Tr) and the set temperature (Ts). By turning on and off, the room temperature (Tr) is changed to the set temperature (T
When the temperature detected by the compressor exceeds a predetermined set value, the blower fans of the compressor and the outdoor heat exchanger are stopped to perform the protective operation of the compressor. If a mechanical contact such as a thermostat is activated even if the temperature detector etc. fails, the abnormality detecting means will detect an abnormality from the pipe temperature gradient detection signal and the cooling / heating signal of the indoor heat exchanger, or the compressor operation An abnormality is detected by detecting interruption of the power supply current inside, and the abnormality is displayed on the display unit, and the outdoor blower fan is stopped.
【0012】[0012]
【実施例】以下、図面に基づいて本発明による空気調和
機の制御装置を詳細に説明する。図1は本発明による空
気調和機の冷凍サイクル図、図2は本発明による空気調
和機の制御装置の一実施例を示すブロック図、図3およ
び図4は本発明による空気調和機の制御装置の部分ブロ
ック図である。図1の冷凍サイクル図に示すように、圧
縮機1、四方弁2、室外熱交換器3、減圧器4、および
室内熱交換器5等を順次連通してなるヒートポンプ式冷
凍サイクルを備えた空気調和機の制御装置は、図2のブ
ロック図に示すように、室内設定温度(Ts)等を入力
する操作部11と、設定温度等を表示する表示部12
と、室内温度(Tr)を検出する室内温度検出器13
と、前記室内熱交換器5の室内送風ファン7を駆動する
室内送風ファン駆動部14と、室内の各部を制御する室
内制御部15と、室外制御部と信号の受渡しを行う通信
部16と、前記室外制御部17と、前記室外熱交換機3
の送風ファンを駆動する室外送風ファン駆動部18と、
前記圧縮機1には温度により開閉するサーモスタット2
1を備え、同圧縮機1の温度を検出する温度検出器19
と、同圧縮機1を駆動する圧縮機駆動部20と、圧縮器
の異常を検出する異常検出手段22とで構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner control apparatus according to the present invention will be described below in detail with reference to the drawings. 1 is a refrigeration cycle diagram of an air conditioner according to the present invention, FIG. 2 is a block diagram showing an embodiment of a control device for an air conditioner according to the present invention, and FIGS. 3 and 4 are control devices for an air conditioner according to the present invention. 3 is a partial block diagram of FIG. As shown in the refrigeration cycle diagram of FIG. 1, air having a heat pump type refrigeration cycle in which a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a pressure reducer 4, an indoor heat exchanger 5 and the like are sequentially connected. As shown in the block diagram of FIG. 2, the control device for the harmony machine includes an operation unit 11 for inputting an indoor set temperature (Ts) and a display unit 12 for displaying the set temperature and the like.
And an indoor temperature detector 13 for detecting the indoor temperature (Tr)
An indoor blower fan drive unit 14 that drives the indoor blower fan 7 of the indoor heat exchanger 5, an indoor control unit 15 that controls each unit in the room, and a communication unit 16 that exchanges signals with the outdoor control unit. The outdoor control unit 17 and the outdoor heat exchanger 3
An outdoor blower fan drive unit 18 for driving the blower fan of
The compressor 1 has a thermostat 2 which opens and closes depending on the temperature.
1, and a temperature detector 19 for detecting the temperature of the compressor 1.
And a compressor drive unit 20 that drives the compressor 1, and an abnormality detection unit 22 that detects an abnormality of the compressor.
【0013】また、前記異常検出手段22は、図3に示
すように、前記室内熱交換器5の配管温度(Tp)を検
出する配管温度検出器24と、同配管温度検出器24の
検出した検出温度(Tp)の勾配(ΔTp)を検出する
勾配検出部22aと、冷房運転または暖房運転であるこ
とを知る冷暖房信号を入力する冷暖房信号入力部22b
と、前記勾配検出部22aよりの勾配検出信号(SΔ)
と冷暖房信号入力部22bよりの冷暖房信号(Sc/
w)から異常を判定する異常判定部22cとで構成し、
冷房運転時に勾配検出信号(SΔ)が所定の正勾配値
(SΔ>+S)以上であると異常、また、暖房運転時に
勾配検出信号(SΔ)が所定の負勾配値(SΔ<−S)
以下であると異常と判定するようにしている。Further, as shown in FIG. 3, the abnormality detecting means 22 detects the pipe temperature detector 24 for detecting the pipe temperature (Tp) of the indoor heat exchanger 5 and the pipe temperature detector 24 for detecting the pipe temperature (Tp). A gradient detection unit 22a that detects the gradient (ΔTp) of the detected temperature (Tp), and a cooling / heating signal input unit 22b that inputs a cooling / heating signal that indicates cooling or heating operation.
And a gradient detection signal (SΔ) from the gradient detector 22a
And the cooling / heating signal (Sc /
w) and an abnormality determination unit 22c for determining an abnormality,
Abnormal if the gradient detection signal (SΔ) is greater than or equal to a predetermined positive gradient value (SΔ> + S) during cooling operation, and the gradient detection signal (SΔ) is a predetermined negative gradient value (SΔ <−S) during heating operation.
If it is below, it is determined to be abnormal.
【0014】また、前記異常検出手段22は、図4に示
すように、前記圧縮機1の電流を検出する電流検出部2
3と、前記圧縮機1のオン・オフ信号を入力するオン・
オフ信号入力部22dと、異常判定部22eとで構成
し、圧縮機1がオン時、同圧縮機1の電流が流れていな
いと異常と判定するようにしている。Further, the abnormality detecting means 22 is, as shown in FIG. 4, a current detecting section 2 for detecting the current of the compressor 1.
3 and an on / off signal for inputting the on / off signal of the compressor 1.
It is composed of an off signal input unit 22d and an abnormality determination unit 22e, and when the compressor 1 is on, it is determined to be abnormal if the current of the compressor 1 is not flowing.
【0015】以上の構成において、つぎにその動作を説
明する。通常の運転においては、前記室内温度検出器1
3よりの室内温度(Tr)と、操作部11より入力した
室内設定温度(Ts)との差(負荷)に応じて前記圧縮
機1および室外熱交換器3の送風ファン6を断続して室
内温度(Tr)が設定温度(Ts)に達するように制御
している。The operation of the above configuration will now be described. In normal operation, the indoor temperature detector 1
3, the blower fan 6 of the compressor 1 and the outdoor heat exchanger 3 is intermittently turned on and off according to the difference (load) between the indoor temperature (Tr) from 3 and the indoor set temperature (Ts) input from the operation unit 11. The temperature (Tr) is controlled so as to reach the set temperature (Ts).
【0016】図6は圧縮機の異常を検出動作を説明する
ための動作フローである。以下、同図を参照して説明す
る。何らかの原因で圧縮機1の温度が上昇し、前記温度
検出部19の検出温度(Tc)が所定の温度(Tcs)
を越える(ST1)と、圧縮機1の破損を防ぐため、異
常と判断して表示部に異常を表示(ST6)すると共
に、前記圧縮機1および室外熱交換機3の送付ファン6
を停止(ST7)させている。さらに、前記温度検出器
19の故障等で、圧縮機1の温度が所定の温度(Tc
s)以上に上昇しても温度検出器19の検出温度(T
c)が上昇しなかった場合は、圧縮機1の破損を防ぐた
め、前記サーモスタット21が作動して、圧縮機1の電
源を遮断するようにしている。FIG. 6 is an operation flow for explaining the operation of detecting an abnormality of the compressor. Hereinafter, description will be made with reference to FIG. The temperature of the compressor 1 rises for some reason, and the temperature (Tc) detected by the temperature detector 19 is a predetermined temperature (Tcs).
When it exceeds (ST1), in order to prevent damage to the compressor 1, it is judged as abnormal and the abnormality is displayed on the display unit (ST6), and the sending fan 6 of the compressor 1 and the outdoor heat exchanger 3 is sent.
Is stopped (ST7). Further, due to a failure of the temperature detector 19 or the like, the temperature of the compressor 1 becomes a predetermined temperature (Tc
s) or more, the temperature detected by the temperature detector 19 (T
When c) does not rise, the thermostat 21 operates to shut off the power source of the compressor 1 in order to prevent the compressor 1 from being damaged.
【0017】以上のようにして、前記サーモスタット2
1が作動し、圧縮機1の電源が遮断されると、図3の実
施例の場合、図5に示すように、室内熱交換器5の配管
温度(Tp)が急に変化するため、この配管温度(T
p)を配管温度検出器24で検出(ST3,ST9)
し、勾配検出部22aで同配管検出温度(Tp)の勾配
(ΔTp)を検出し、冷暖房信号入力部22bより入力
する冷暖房信号(Sc/w)から冷房運転中か(ST
2)または暖房運転中か(ST8)を判断することによ
り、冷房運転時に勾配検出信号(SΔ)が所定の正勾配
値(SΔ>+S)以上(ST4)であると異常、また、
暖房運転時に勾配検出信号(SΔ)が所定の負勾配値
(SΔ<−S)以下(ST10)であると異常と、異常
判定部22cが判定(ST5)している。As described above, the thermostat 2
When the compressor 1 is activated and the power of the compressor 1 is cut off, in the case of the embodiment of FIG. 3, the pipe temperature (Tp) of the indoor heat exchanger 5 suddenly changes as shown in FIG. Pipe temperature (T
p) is detected by the pipe temperature detector 24 (ST3, ST9)
Then, the gradient detection unit 22a detects the gradient (ΔTp) of the pipe detection temperature (Tp), and the cooling / heating signal (Sc / w) input from the cooling / heating signal input unit 22b indicates whether the cooling operation is in progress (ST
2) or during heating operation (ST8), it is abnormal if the gradient detection signal (SΔ) is a predetermined positive gradient value (SΔ> + S) or more (ST4) during cooling operation, and
The abnormality determination unit 22c determines (ST5) that there is an abnormality when the gradient detection signal (SΔ) is less than or equal to a predetermined negative gradient value (SΔ <−S) (ST10) during the heating operation.
【0018】また、図4の実施例の場合は、電流検出部
23よりの前記圧縮機1の電流検出信号(Scur)
と、オン・オフ信号入力部22dよりの圧縮機1のオン
・オフ信号(Son/off)により、異常判定部22
eが圧縮機1がオン時、同圧縮機1の電流が流れていな
いと異常と判定するようにしている。Further, in the case of the embodiment of FIG. 4, the current detection signal (Scur) of the compressor 1 from the current detection unit 23.
And the on / off signal (Son / off) of the compressor 1 from the on / off signal input unit 22d.
When the compressor 1 is turned on, e is determined to be abnormal if the current of the compressor 1 is not flowing.
【0019】以上のようにして、サーモスタット21が
作動して、圧縮機1の電源を遮断したことが判明する
と、表示部12に圧縮機1が異常であることを表示する
とともに室外送風ファン6を停止するようにしている。As described above, when it is found that the thermostat 21 is activated and the power of the compressor 1 is shut off, the display unit 12 displays that the compressor 1 is abnormal and the outdoor blower fan 6 is turned on. I'm trying to stop.
【0020】[0020]
【発明の効果】以上説明したように、本発明による空気
調和機の制御装置によれば、通常は室内温度(Tr)と
設定温度(Ts)との差(負荷)に応じて前記圧縮機の
運転を断続することにより、室内温度(Tr)を設定温
度(Ts)になるように制御し、圧縮機の検出温度が所
定の設定値を越えると同圧縮機および室外熱交換器の送
風ファンの運転を停止して圧縮機の保護動作を行うが、
圧縮機の温度検出器等の故障した場合でも、サーモスタ
ット等の機械的接点が作動すると、異常検出手段が室内
熱交換器の配管温度の勾配検出信号と冷暖房信号から異
常を検出するか、前記圧縮機動作中の電源の遮断を検出
することにより異常を検出し、異常であることを表示部
に表示するとともに室外送風ファンを停止するようにし
ているので、圧縮機に備えたサーモスタット等の機械的
接点が作動しても、これを検出する手段を設け、表示部
に異常を表示するとともに、室外送風ファンを停止する
ようにした空気調和機の制御装置を提供することができ
る。As described above, according to the control device for an air conditioner of the present invention, the compressor of the compressor is normally operated according to the difference (load) between the room temperature (Tr) and the set temperature (Ts). By controlling the indoor temperature (Tr) to reach the set temperature (Ts) by interrupting the operation, and when the detected temperature of the compressor exceeds a predetermined set value, the blower fan of the compressor and the outdoor heat exchanger is controlled. The operation is stopped to protect the compressor,
Even if the temperature detector of the compressor fails, if the mechanical contact such as the thermostat operates, the abnormality detecting means detects an abnormality from the gradient detection signal and the heating / cooling signal of the pipe temperature of the indoor heat exchanger, or An abnormality is detected by detecting the interruption of the power supply while the machine is operating.The abnormality is displayed on the display and the outdoor blower fan is stopped.Therefore, a mechanical device such as a thermostat installed in the compressor is used. It is possible to provide a control device for an air conditioner, which is provided with means for detecting the contact even if the contact operates, displays an abnormality on the display unit, and stops the outdoor blower fan.
【図1】従来または本発明による空気調和機の冷凍サイ
クル図である。FIG. 1 is a refrigeration cycle diagram of an air conditioner according to the related art or the present invention.
【図2】本発明による空気調和機の制御装置の一実施例
を示すブロック図である。FIG. 2 is a block diagram showing one embodiment of a control device for an air conditioner according to the present invention.
【図3】本発明による空気調和機の制御装置の異常検出
手段の一実施例を示す部分ブロック図である。FIG. 3 is a partial block diagram showing an embodiment of abnormality detecting means of the control device for an air conditioner according to the present invention.
【図4】本発明による空気調和機の制御装置の異常検出
手段の別の実施例を示す部分ブロック図である。FIG. 4 is a partial block diagram showing another embodiment of the abnormality detecting means of the control device for an air conditioner according to the present invention.
【図5】圧縮機運転中止時の異常検出手段の動作を説明
するための室内熱交換器の温度変化図である。FIG. 5 is a temperature change diagram of the indoor heat exchanger for explaining the operation of the abnormality detecting means when the compressor is stopped.
【図6】本発明による空気調和機の制御装置の異常検出
手段の動作フローである。FIG. 6 is an operation flow of abnormality detecting means of the control device for an air conditioner according to the present invention.
【図7】従来の空気調和機の制御装置のブロック図であ
る。FIG. 7 is a block diagram of a conventional air conditioner control device.
1 圧縮機 2 四方弁 3 室外熱交換器 4 減圧器 5 室内熱交換器 6 室外送風ファン 7 室内送風ファン 11 操作部 12 表示部 13 室内温度検出器 14 室内送風ファン駆動部 15 室内制御部 16 通信部 17 室外制御部 18 室外送風ファン駆動部 19 温度検出器 20 圧縮機駆動部 21 サーモスタット 22 異常検出手段 22a 勾配検出部 22b 冷暖房信号入力部 22c 異常判定部 22d 圧縮機オン・オフ信号入力部 22e 異常判定部 23 電流検出部 24 配管温度検出器 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Pressure reducer 5 Indoor heat exchanger 6 Outdoor blower fan 7 Indoor blower fan 11 Operation part 12 Display part 13 Indoor temperature detector 14 Indoor blower fan drive part 15 Indoor control part 16 Communication Part 17 Outdoor control part 18 Outdoor blower fan drive part 19 Temperature detector 20 Compressor drive part 21 Thermostat 22 Abnormality detection means 22a Gradient detection part 22b Cooling and heating signal input part 22c Abnormality judgment part 22d Compressor on / off signal input part 22e Abnormality Judgment unit 23 Current detection unit 24 Pipe temperature detector
Claims (6)
器、および室内熱交換器等を順次連通してなるヒートポ
ンプ式冷凍サイクルを備え、負荷に応じて前記圧縮機の
運転を断続制御するものであって、室内機には室内設定
温度等を入力する操作部と、設定温度等を表示する表示
部と、室内温度を検出する室内温度検出器と、前記室内
熱交換器の送風ファンを駆動する送風ファン駆動部と、
室内の各部を制御する室内制御部と、同室内制御部と室
外制御部と信号を送受する通信部とを備え、室外機に
は、前記室外制御部と、前記室外熱交換器の送風ファン
を駆動する送風ファン駆動部と、前記圧縮機の温度を検
出する温度検出器と、同圧縮機を駆動する圧縮機駆動部
とを備えており、前記圧縮機には温度により開閉するサ
ーモスタット等の機械的接点が設けられるとともに、同
圧縮機の温度を検出する温度検出器を備え、同検出温度
が所定の設定値を越えると前記圧縮機の運転および室外
熱交換器の送風ファンを停止して圧縮機の保護動作を行
う空気調和機において、前記圧縮機の電源線に挿入され
たサーモスタット等の機械的接点の動作を検出する異常
検出手段を設け、同異常検出手段がサーモスタット等の
機械的接点の作動を検出すると、室外送風ファンを停止
するようにしてなることを特徴とする空気調和機の制御
装置。1. A heat pump type refrigeration cycle in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducer, an indoor heat exchanger and the like are sequentially connected, and the operation of the compressor is intermittently controlled according to a load. In the indoor unit, an operation unit for inputting an indoor set temperature and the like, a display unit for displaying the set temperature and the like, an indoor temperature detector for detecting the indoor temperature, and a blower fan for the indoor heat exchanger. A blower fan drive unit that drives the
An indoor control unit that controls each unit in the room, a communication unit that transmits and receives signals to and from the indoor control unit, the outdoor control unit, and the outdoor unit includes the outdoor control unit and a blower fan for the outdoor heat exchanger. A blower fan drive unit that drives, a temperature detector that detects the temperature of the compressor, and a compressor drive unit that drives the compressor are provided, and the compressor is a machine such as a thermostat that opens and closes according to the temperature. Equipped with a dynamic contact and a temperature detector that detects the temperature of the compressor, and when the detected temperature exceeds a preset value, the compressor is stopped and the blower fan of the outdoor heat exchanger is stopped. In an air conditioner that performs a protective operation of the machine, an abnormality detection means for detecting the operation of a mechanical contact such as a thermostat inserted in the power line of the compressor is provided, and the abnormality detection means is provided for the mechanical contact such as a thermostat. Actuation When output control device for an air conditioner characterized by comprising so as to stop the outdoor blower fan.
器、および室内熱交換器等を順次連通してなるヒートポ
ンプ式冷凍サイクルを備え、負荷に応じて前記圧縮機の
運転を断続制御するものであって、室内機には室内設定
温度等を入力する操作部と、設定温度等を表示する表示
部と、室内温度を検出する室内温度検出器と、前記室内
熱交換器の送風ファンを駆動する送風ファン駆動部と、
室内の各部を制御する室内制御部と、同室内制御部と室
外制御部と信号を送受する通信部とを備え、室外機に
は、前記室外制御部と、前記室外熱交換器の送風ファン
を駆動する送風ファン駆動部と、前記圧縮機の温度を検
出する温度検出器と、同圧縮機を駆動する圧縮機駆動部
とを備えており、前記圧縮機には温度により開閉するサ
ーモスタット等の機械的接点が設けられるとともに、同
圧縮機の温度を検出する温度検出器を備え、同検出温度
が所定の設定値を越えると前記圧縮機の運転および室外
熱交換器の送風ファンを停止して圧縮機の保護動作を行
う空気調和機において、前記圧縮機の電源線に挿入され
たサーモスタット等の機械的接点の動作を検出する異常
検出手段と、異常を表示する異常表示部を設け、前記異
常検出手段がサーモスタット等の機械的接点の作動を検
出すると室外送風ファンを停止するとともに、圧縮機が
異常であることを前記異常表示部に表示するようにして
なることを特徴とする空気調和機の制御装置。2. A heat pump type refrigeration cycle in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducer, an indoor heat exchanger and the like are sequentially connected, and the operation of the compressor is intermittently controlled according to a load. In the indoor unit, an operation unit for inputting an indoor set temperature and the like, a display unit for displaying the set temperature and the like, an indoor temperature detector for detecting the indoor temperature, and a blower fan for the indoor heat exchanger. A blower fan drive unit that drives the
An indoor control unit that controls each unit in the room, a communication unit that transmits and receives signals to and from the indoor control unit, the outdoor control unit, and the outdoor unit includes the outdoor control unit and a blower fan for the outdoor heat exchanger. A blower fan drive unit that drives, a temperature detector that detects the temperature of the compressor, and a compressor drive unit that drives the compressor are provided, and the compressor is a machine such as a thermostat that opens and closes according to the temperature. Equipped with a dynamic contact and a temperature detector that detects the temperature of the compressor, and when the detected temperature exceeds a preset value, the compressor is stopped and the blower fan of the outdoor heat exchanger is stopped. In an air conditioner that performs a protective operation of a machine, an abnormality detection unit that detects the operation of a mechanical contact such as a thermostat inserted in the power line of the compressor and an abnormality display unit that displays an abnormality are provided to detect the abnormality. The means is thermo Upon detection of the operation of mechanical contacts such as Tat stops the outdoor blower fan, compressor control unit of the air conditioner characterized by comprising as displayed on the abnormality display unit that is abnormal.
の配管温度を検出する配管温度検出器と、同配管温度検
出器の検出した検出温度の勾配を検出する勾配検出部
と、冷房運転または暖房運転であることを知る冷暖房信
号を入力する冷暖房信号入力部と、前記勾配検出部より
の勾配検出信号と冷暖房信号入力部よりの冷暖房信号か
ら異常を判定する異常判定部とで構成し、冷房運転時に
勾配検出信号が所定の正勾配値以上であると異常、ま
た、暖房運転時に勾配検出信号が所定の負勾配値以下で
あると異常と判定するようにしてなることを特徴とする
請求項1または請求項2記載の空気調和機の制御装置。3. The abnormality detecting means, a pipe temperature detector for detecting a pipe temperature of the indoor heat exchanger, a gradient detector for detecting a gradient of the detected temperature detected by the pipe temperature detector, and a cooling operation. Alternatively, the cooling and heating signal input section for inputting a cooling and heating signal to know that it is heating operation, and an abnormality determination section for determining an abnormality from the gradient detection signal from the gradient detection section and the cooling and heating signal from the cooling and heating signal input section, When the gradient detection signal is equal to or higher than a predetermined positive gradient value during the cooling operation, it is determined to be abnormal, and when the gradient detection signal is equal to or lower than the predetermined negative gradient value during the heating operation, it is determined to be abnormal. The control device for an air conditioner according to claim 1 or 2.
・オフ信号を入力するオン・オフ信号入力部と、前記圧
縮機の電流を検出する電流検出部と、異常判定部とで構
成し、圧縮機がオン時、圧縮機の電流が流れていないと
異常と判定するようにしてなることを特徴とする請求項
1または請求項2記載の空気調和機の制御装置。4. The abnormality detecting means comprises an ON / OFF signal input section for inputting an ON / OFF signal of the compressor, a current detecting section for detecting a current of the compressor, and an abnormality determining section. The control device for an air conditioner according to claim 1 or 2, wherein when the compressor is on, it is determined to be abnormal if the current of the compressor is not flowing.
信号と冷暖房信号に対する判定結果を記憶する判定テー
ブルで構成してなることを特徴とする請求項3記載の空
気調和機の制御装置。5. The control device for an air conditioner according to claim 3, wherein the abnormality determination unit is configured by a determination table that stores determination results for the gradient detection signal and the cooling / heating signal in advance.
送風ファン等を制御する室内制御部に接続する遠隔装置
に設けたことを特徴とする請求項2記載の空気調和機の
制御装置。6. The control device for an air conditioner according to claim 2, wherein the abnormality display unit is provided in a remote device that is connected to an indoor control unit that controls a blower fan of the indoor heat exchanger.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8021056A JPH09210519A (en) | 1996-02-07 | 1996-02-07 | Control device for air-conditioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8021056A JPH09210519A (en) | 1996-02-07 | 1996-02-07 | Control device for air-conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09210519A true JPH09210519A (en) | 1997-08-12 |
Family
ID=12044259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8021056A Pending JPH09210519A (en) | 1996-02-07 | 1996-02-07 | Control device for air-conditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09210519A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111174475A (en) * | 2020-01-09 | 2020-05-19 | 珠海格力电器股份有限公司 | Condensing unit dual-system closed-loop control method and device and condensing unit |
-
1996
- 1996-02-07 JP JP8021056A patent/JPH09210519A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111174475A (en) * | 2020-01-09 | 2020-05-19 | 珠海格力电器股份有限公司 | Condensing unit dual-system closed-loop control method and device and condensing unit |
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