JP3202465B2 - Separate type air conditioner - Google Patents
Separate type air conditionerInfo
- Publication number
- JP3202465B2 JP3202465B2 JP34384593A JP34384593A JP3202465B2 JP 3202465 B2 JP3202465 B2 JP 3202465B2 JP 34384593 A JP34384593 A JP 34384593A JP 34384593 A JP34384593 A JP 34384593A JP 3202465 B2 JP3202465 B2 JP 3202465B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- compressor
- air conditioner
- frequency
- refrigerant
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は分離型空気調和機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation type air conditioner.
【０００２】[0002]
【従来の技術】従来の空気調和機の冷媒回路が図４に示
されている。Ｏは室外ユニットで、インバータ17、圧縮
機１、四方弁２、室外熱交換器14、室外フアン15、逆止
弁12、冷房用絞り13、操作弁３、11等を備えている。Ｉ
は室内ユニットで、室内熱交換器６、室内フアン16、暖
房用絞り７、逆止弁８、管接手５、９等を備えている。
そして、室外ユニットＯと室内ユニットＩは接続配管４
及び10を介して互いに接続されている。2. Description of the Related Art A refrigerant circuit of a conventional air conditioner is shown in FIG. O is an outdoor unit, which includes an inverter 17, a compressor 1, a four-way valve 2, an outdoor heat exchanger 14, an outdoor fan 15, a check valve 12, a cooling throttle 13, operating valves 3, 11, and the like. I
Is an indoor unit, which includes an indoor heat exchanger 6, an indoor fan 16, a heating throttle 7, a check valve 8, pipe joints 5, 9 and the like.
The outdoor unit O and the indoor unit I are connected to the connection pipe 4.
And 10 are connected to each other.
【０００３】圧縮機１は商用電源18からインバータ17を
介して供給される電流によって駆動され、インバータ17
によりこの電流の周波数を変更することによって圧縮機
１の回転数、即ち、能力を制御しうるようになってい
る。The compressor 1 is driven by a current supplied from a commercial power supply 18 via an inverter 17.
By changing the frequency of this current, the rotation speed of the compressor 1, that is, the capacity, can be controlled.
【０００４】空気調和機の暖房運転時、圧縮機１から吐
出された高温・高圧のガス冷媒は、実線矢印で示すよう
に、四方弁２、操作弁３、接続配管４、管接手５を経て
室内熱交換器６に入り、ここで室内フアン16により送ら
れる室内空気に放熱することによって凝縮液化して高圧
の液冷媒となる。この液冷媒は暖房用絞り７で絞られる
ことにより断熱膨張して低圧の液ガス二相冷媒となる。
この液ガス二相冷媒は管接手９、接続配管10、操作弁1
1、逆止弁12を経て室外熱交換器14に入り、ここで室外
フアン15により送られる外気から吸熱することによって
蒸発気化して低圧のガス冷媒となる。そして、このガス
冷媒は四方弁２を経て圧縮機１に吸入される。[0004] During the heating operation of the air conditioner, the high-temperature and high-pressure gas refrigerant discharged from the compressor 1 passes through the four-way valve 2, the operation valve 3, the connection pipe 4, and the pipe joint 5 as shown by solid arrows. It enters the indoor heat exchanger 6 and radiates heat to the indoor air sent by the indoor fan 16 to condense and liquefy to become a high-pressure liquid refrigerant. This liquid refrigerant is adiabatically expanded by being throttled by the heating throttle 7 and becomes a low-pressure liquid-gas two-phase refrigerant.
This liquid-gas two-phase refrigerant is connected to a pipe joint 9, a connecting pipe 10, an operating valve 1
1. It enters the outdoor heat exchanger 14 via the check valve 12, where it absorbs heat from the outside air sent by the outdoor fan 15 and evaporates to become a low-pressure gas refrigerant. Then, the gas refrigerant is sucked into the compressor 1 via the four-way valve 2.
【０００５】一方、冷房運転時には、圧縮機１から吐出
されたガス冷媒は、破線矢印で示すように、四方弁２を
経て室外熱交換器14で凝縮して高圧液冷媒となり、冷房
用絞り13で絞られることにより低圧の液ガス二相冷媒と
なる。そして、この液ガス二相冷媒は操作弁11、接続配
管10、管接手９、逆止弁８を経て室内熱交換器６で蒸発
して低圧のガス冷媒となる。このガス冷媒は管接手５、
接続配管４、操作弁３、四方弁２を経て圧縮機１に戻
る。On the other hand, during the cooling operation, the gas refrigerant discharged from the compressor 1 is condensed in the outdoor heat exchanger 14 through the four-way valve 2 to become a high-pressure liquid refrigerant as shown by the dashed arrow, and the cooling throttle 13 And becomes a low-pressure liquid-gas two-phase refrigerant. Then, the liquid-gas two-phase refrigerant passes through the operation valve 11, the connection pipe 10, the pipe joint 9, and the check valve 8, and is evaporated in the indoor heat exchanger 6 to become a low-pressure gas refrigerant. This gas refrigerant is connected to the pipe joint 5,
It returns to the compressor 1 via the connection pipe 4, the operation valve 3, and the four-way valve 2.
【０００６】この分離型空気調和機の室外ユニットＯは
その冷媒回路内に所要の冷媒を封入して操作弁11及び３
を閉じた状態で工場から出荷され、室内ユニットＩはこ
れに接続配管４及び10が接続された状態で工場から出荷
される。[0006] The outdoor unit O of this separation type air conditioner encloses required refrigerant in its refrigerant circuit and operates the operation valves 11 and 3.
Is closed, and the indoor unit I is shipped from the factory with the connection pipes 4 and 10 connected thereto.
【０００７】室外ユニットＯ及び室内ユニットＩを所定
の場所に据付け、しかる後、接続配管10を操作弁11に接
続し、接続配管４を操作弁３に接続する。次いで、接続
配管４を操作弁３に接続するためのフレアナットを若干
弛めた後、操作弁11を開く。[0007] The outdoor unit O and the indoor unit I are installed at predetermined locations. Thereafter, the connection pipe 10 is connected to the operation valve 11, and the connection pipe 4 is connected to the operation valve 3. Next, after slightly loosening the flare nut for connecting the connection pipe 4 to the operation valve 3, the operation valve 11 is opened.
【０００８】すると、室外ユニットＯの冷媒回路内に封
入されていた冷媒が操作弁11、接続配管10を通って室内
ユニットＩの冷媒回路内に流入し、これに伴って接続配
管10及び室内ユニットＩの冷媒回路内の空気が接続配管
４を通って操作弁３の弛めたフレアナットの隙間から外
部に押出される。このフレアナットの隙間から少量の冷
媒が漏れた時点でフレアナットを締め付け、操作弁３を
全開とすることによって分離型空気調和機の据付作業が
完了する。Then, the refrigerant sealed in the refrigerant circuit of the outdoor unit O flows into the refrigerant circuit of the indoor unit I through the operation valve 11 and the connection pipe 10, and accordingly, the connection pipe 10 and the indoor unit Air in the refrigerant circuit I is pushed out through the connection pipe 4 to the outside through the loosened flare nut of the operation valve 3. When a small amount of refrigerant leaks from the gap of the flare nut, the flare nut is tightened and the operation valve 3 is fully opened, thereby completing the installation work of the separation type air conditioner.
【０００９】この空気調和機の運転を開始すると、圧縮
機１の運転周波数が次第に上昇する。そして、室内熱交
換器６の温度は暖房運転時には図５に曲線イで示すよう
に変化し、冷房運転時には室内熱交換器６の温度は曲線
ロで示すように変化する。When the operation of the air conditioner is started, the operation frequency of the compressor 1 gradually increases. Then, the temperature of the indoor heat exchanger 6 changes as shown by the curve A in FIG. 5 during the heating operation, and the temperature of the indoor heat exchanger 6 changes as shown by the curve B during the cooling operation.
【００１０】しかし、据付工事ミス等により操作弁３及
び11の双方又は一方を開け忘れると、室内熱交換器６に
冷媒が循環しないので、室内熱交換器６の温度は殆ど変
化しない。従って、室内熱交換器６の温度は暖房運転時
には曲線ハで示すように変化し、冷房運転時には曲線ニ
で示すように変化する。However, if the operator forgets to open one or both of the operation valves 3 and 11 due to an installation mistake or the like, the refrigerant does not circulate in the indoor heat exchanger 6, and the temperature of the indoor heat exchanger 6 hardly changes. Accordingly, the temperature of the indoor heat exchanger 6 changes as indicated by the curve C during the heating operation, and changes as indicated by the curve D during the cooling operation.
【００１１】[0011]
【発明が解決しようとする課題】上記従来の空気調和機
においては、工事ミス等により操作弁11及び３の双方又
は一方を開け忘れたまま空気調和機を運転すると、圧縮
機１に過大な負荷が掛かってこれが損傷するおそれがあ
った。In the conventional air conditioner described above, if the air conditioner is operated with one or both of the operation valves 11 and 3 forgotten to be opened due to a construction error or the like, an excessive load is applied to the compressor 1. This could damage it.
【００１２】[0012]
【課題を解決するための手段】本発明は上記課題を解決
するために発明されたものであって、第１の発明の要旨
とするところは、少なくとも室外熱交換器と圧縮機とこ
の圧縮機の運転周波数を変更するためのインバータと配
管接続用操作弁を備え、その冷媒回路内に冷媒を封入し
て上記操作弁を閉じた状態で出荷される室外ユニット
と、少なくとも室内熱交換器を備え、その冷媒回路内に
冷媒を封入せずに出荷される室内ユニットとを具備し、
上記室外ユニットと上記室内ユニットとを据え付けた後
これらを接続配管を介して接続して上記操作弁を開とし
てなる分離型空気調和機において、上記室内熱交換器の
温度を検出する熱交温度センサを設けるとともに空気調
和機の運転を開始することによって上記圧縮機の運転周
波数が基準値以上になったときに判定指令を出力する周
波数判断手段と、この周波数判断手段からの判定指令を
受けたときに上記熱交温度センサの検出温度が冷房運転
時所定値以下、暖房運転時所定値以上にならないとき、
上記操作弁が閉じていると判定する判定手段を具備する
保護装置を設けたことを特徴とする分離型空気調和機に
ある。Means for Solving the Problems The present invention was invented to solve the above problems, and has as subject matter of the first invention, the compressor Toko at least the outdoor heat exchanger
An inverter for changing the operating frequency of the compressor and an operation valve for connecting pipes are provided , and refrigerant is sealed in the refrigerant circuit.
An outdoor unit shipped with the operating valve closed , and at least an indoor heat exchanger ,
An indoor unit that is shipped without enclosing the refrigerant ,
After installing the outdoor unit and the indoor unit
In a separation type air conditioner in which these are connected via a connection pipe to open the operation valve, a heat exchange temperature sensor for detecting the temperature of the indoor heat exchanger is provided and air conditioning is performed.
A frequency judging means for outputting a judging command when the operating frequency of the compressor becomes equal to or higher than a reference value by starting the operation of the Japanese machine, and a judging command from the frequency judging means.
When the temperature detected by the heat exchange temperature sensor is not more than a predetermined value during cooling operation and not more than a predetermined value during heating operation when received,
A separation-type air conditioner is provided with a protection device including a determination means for determining that the operation valve is closed.
【００１３】第２の発明の要旨とするところは、少なく
とも室外熱交換器と圧縮機とこの圧縮機の運転周波数を
変更するためのインバータと配管接続用操作弁を備え、
その冷媒回路内に冷媒を封入して上記操作弁を閉じた状
態で出荷される室外ユニットと、少なくとも室内熱交換
器を備え、その冷媒回路内に冷媒を封入せずに出荷され
る室内ユニットとを具備し、上記室外ユニットと上記室
内ユニットとを据え付けた後これらを接続配管を介して
接続して上記操作弁を開としてなる分離型空気調和機に
おいて、上記室内熱交換器の温度を検出する熱交温度セ
ンサと上記室内熱交換器の吸込空気温度を検出する吸込
空気温度センサを設けるとともにこれら熱交温度センサ
の検出値と吸込空気温度センサの検出値との温度差を演
算する演算手段と、空気調和機の運転を開始することに
よって上記圧縮機の運転周波数が基準値以上になったと
きに判定指令を出力する周波数判断手段と、この周波数
判断手段からの判定指令を受けたときに上記演算手段に
よって演算された温度差が基準値以下のとき、上記操作
弁が閉じていると判定する判定手段を具備する保護装置
を設けたことを特徴とする分離型空気調和機にある。The gist of the second invention is that at least the outdoor heat exchanger, the compressor, and the operating frequency of the compressor are adjusted.
Equipped with an inverter for changing and an operating valve for piping connection ,
A state in which the refrigerant is sealed in the refrigerant circuit and the operation valve is closed
An outdoor unit that is shipped in a state, and at least an indoor heat exchanger that is shipped without enclosing refrigerant in its refrigerant circuit.
An indoor unit , the outdoor unit and the room
In the operating valve are connected via a these connection pipe after installation of the inner units to open and then formed by separate type air conditioner, the heat exchanger temperature sensor and said chamber for detecting the temperature of the indoor heat exchanger A suction air temperature sensor for detecting the suction air temperature of the heat exchanger is provided, and these heat exchange temperature sensors are provided.
Starring a temperature difference between the detection value and the suction detection value of the air temperature sensor
Calculating means you calculated, to initiate operation of the air conditioner
Therefore, if the operating frequency of the compressor becomes higher than the reference value ,
And frequency determination means for outputting a determination command to come, this frequency
When receiving a judgment command from the judging means, the calculating means
Therefore, there is provided a separation-type air conditioner including a protection device including a determination unit that determines that the operation valve is closed when the calculated temperature difference is equal to or less than a reference value.
【００１４】上記判定手段によって操作弁が閉じている
と判定されたとき、上記判定手段からの判定結果を受け
てこれを表示する異常表示手段と圧縮機の運転を停止す
る異常停止手段を保護装置に設けることができる。When the judging means judges that the operation valve is closed, the judgment result from the judging means is received.
The protection device can be provided with an abnormality display means for displaying this and an abnormal stop means for stopping the operation of the compressor.
【００１５】[0015]
【作用】第１の発明においては、空気調和機の運転を開
始することによって圧縮機の運転周波数が基準値以上に
なったときに周波数判断手段は判定指令を出力し、判定
手段はこの判定指令を受けたときに熱交温度センサによ
って検出された室内熱交換器の温度が冷房運転時所定値
以下、暖房運転時所定値以上にならない場合には操作弁
が閉じていると判定する。[Action] In the first invention, the frequency determining means to come with the operating frequency of the compressor is equal to or greater than the reference value by initiating the operation of the air conditioner outputs a determination command, the determination
Means the temperature of the indoor heat exchanger detected by the heat exchange temperature sensor is below a predetermined value during the cooling operation when receiving the determination command, the closed Misao Sakuben if does not exceed a predetermined value during the heating operation Is determined.
【００１６】第２の発明においては、空気調和機の運転
を開始することによって圧縮機の運転周波数が基準値以
上になったときに周波数判断手段は判定指令を出力し、
熱交温度センサによって検出された室内熱交換器の温度
と吸込空気温度センサによって検出された室内熱交換器
の吸込空気温度との温度差が演算手段によって演算され
る。そして、判定手段は判定指令を受けたときに演算手
段によって演算された温度差が基準値以下の場合には操
作弁が閉じていると判定する。[0016] In the second invention, the frequency determining means to come with the operating frequency of the compressor is equal to or greater than the reference value by initiating the operation of the air conditioner outputs a determination command,
The temperature difference between the temperature of the indoor heat exchanger detected by the heat exchange temperature sensor and the suction air temperature of the indoor heat exchanger detected by the suction air temperature sensor is calculated by the calculation means.
You. Then, when the determination means receives the determination command, the calculation means
If the temperature difference calculated by the stage is equal to or less than the reference value, it is determined that the operation valve is closed.
【００１７】操作弁が閉じていると判定されたとき、こ
れを異常表示手段によって表示し、かつ、圧縮機を異常
停止手段によって停止することができる。When it is determined that the operation valve is closed, this is displayed by the abnormality display means, and the compressor can be stopped by the abnormality stop means.
【００１８】[0018]
【実施例】本発明の第１の実施例が図１に示されてい
る。室内熱交換器６にはこの温度を検出する熱交温度セ
ンサ19が取り付けられている。20は保護装置で周波数判
断手段21、判定手段22、異常停止手段23、異常表示手段
24、基準値設定手段25、冷房用所定値設定手段26及び暖
房用所定値設定手段27を備えている。他の構成は図４に
示す従来のものと同様であり、対応する部材には同じ符
号が付されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIG. A heat exchange temperature sensor 19 for detecting the temperature is attached to the indoor heat exchanger 6. Reference numeral 20 denotes a protection device, which is a frequency determination unit 21, a determination unit 22, an abnormality stop unit 23, and an abnormality display unit.
24, reference value setting means 25, cooling predetermined value setting means 26, and heating predetermined value setting means 27. Other configurations are the same as those of the conventional one shown in FIG. 4, and corresponding members are denoted by the same reference numerals.
【００１９】しかして、空気調和機の運転を開始する
と、圧縮機１の運転周波数が次第に上昇する。この運転
周波数は周波数判断手段21に入力され、ここで基準値設
定手段25から入力された基準値と比較される。周波数判
断手段21は運転周波数が基準値以上か否かを判断し、以
上のとき判定手段22に判定指令を出力する。一方、熱交
温度センサ19で検出された室内熱交換器６の温度は判定
手段22に入力される。When the operation of the air conditioner is started, the operating frequency of the compressor 1 gradually increases. This operating frequency is input to the frequency determination means 21, where it is compared with the reference value input from the reference value setting means 25. The frequency determining means 21 determines whether the operating frequency is equal to or higher than the reference value, and outputs a determination command to the determining means 22 when the operating frequency is equal to or higher than the reference value. On the other hand, the temperature of the indoor heat exchanger 6 detected by the heat exchange temperature sensor 19 is input to the determination means 22.
【００２０】判定手段22は周波数判断手段21から判定指
令を受けたとき、室内熱交換器６の温度と冷房運転時に
は冷房用所定値設定手段26から入力された冷房用所定値
とを比較し、暖房運転時には暖房用所定値設定手段27か
ら入力された暖房用所定値とを比較する。そして、冷房
運転時には熱交温度センサ19の検出値が冷房用所定値以
下にならないとき、暖房運転時には熱交温度センサ19の
検出値が暖房用所定値以上にならないとき、操作弁３、
11の双方又は一方が閉じていると判定して判定結果を異
常停止手段23及び異常表示手段24に出力する。すると、
異常停止手段23は圧縮機１に出力してこれを停止させ、
異常表示手段24は異常を表示する。The judging means 22, when receiving the judgment command from the frequency judging means 21, compares the temperature of the indoor heat exchanger 6 with the predetermined value for cooling inputted from the predetermined value setting for cooling 26 during the cooling operation, At the time of the heating operation, a comparison is made with the predetermined heating value input from the predetermined heating value setting means 27. During the cooling operation, the value detected by the heat exchange temperature sensor 19 is equal to or less than a predetermined value for cooling.
When the temperature does not drop below , the heat exchange temperature sensor 19
When the detected value does not exceed the predetermined value for heating , the operation valve 3,
It determines that both or one of 11 is closed, and outputs the determination result to the abnormal stopping means 23 and the abnormal displaying means 24. Then
The abnormal stop means 23 outputs to the compressor 1 to stop it,
The abnormality display means 24 displays an abnormality.
【００２１】かくして、操作弁３、11の双方又は一方が
閉のまま空気調和機の運転を継続することによって圧縮
機１に過大な負荷が掛かりこれが損傷するのを未然に防
止できる。Thus, by continuing the operation of the air conditioner while both or one of the operation valves 3 and 11 is closed, it is possible to prevent an excessive load from being applied to the compressor 1 and to prevent the compressor 1 from being damaged.
【００２２】本発明の第２の実施例が図２及び図３に示
されている。この第２の実施例においては、熱交温度セ
ンサ19によって検出された室内熱交換器６の温度及び吸
込空気温度センサ31によって検出された室内熱交換器６
の吸込空気温度、即ち、室温が保護装置30に設けられた
演算手段32に入力され、演算手段32はこれら検出温度の
温度差を演算して判定手段33に入力する。A second embodiment of the present invention is shown in FIGS. In the second embodiment, the temperature of the indoor heat exchanger 6 detected by the heat exchange temperature sensor 19 and the indoor heat exchanger 6 detected by the intake air temperature sensor 31
, That is, the room temperature, is input to the calculating means 32 provided in the protection device 30, and the calculating means 32 calculates the temperature difference between these detected temperatures and inputs the difference to the determining means 33.
【００２３】判定手段33は周波数判断手段21から判定指
令を受けたとき、この温度差を基準値設定手段34から入
力された基準値とを比較し、温度差が基準値以下のとき
操作弁３、11の双方又は一方が閉じていると判定して、
その判定結果を異常停止手段23及び異常表示手段24に出
力する。When the judgment means 33 receives the judgment command from the frequency judgment means 21, it compares this temperature difference with the reference value inputted from the reference value setting means 34, and when the temperature difference is smaller than the reference value , the operation valve 3 , 11 or both are determined to be closed,
The result of the determination is output to the abnormal stopping means 23 and the abnormal displaying means 24.
【００２４】図３には温度差と運転周波数との関係が示
され、操作弁３、11が全開のときは温度差は図３に実線
イで示すように変化するが、操作弁３、11の双方又は一
方が閉のときは温度差は図３に破線ロで示すように変化
する。そこで、図３に一点鎖線ハで示すように基準値を
定め、これを基準値設定手段34に記憶させて置けば、操
作弁３、11が閉じているか否かを確実に判定できる。他
の構成は図4 に示す従来のものと同様であり、対応する
部材には同じ符号が付されている。FIG. 3 shows the relationship between the temperature difference and the operating frequency. When the operation valves 3 and 11 are fully opened, the temperature difference changes as shown by the solid line A in FIG. When both or one of them is closed, the temperature difference changes as shown by the broken line B in FIG. Therefore, if a reference value is determined as shown by a dashed-dotted line c in FIG. 3 and stored in the reference value setting means 34, it can be reliably determined whether or not the operation valves 3 and 11 are closed. Other configurations are the same as those of the conventional one shown in FIG. 4, and corresponding members are denoted by the same reference numerals.
【００２５】この第２の実施例においては、室温の如何
を問わず、操作弁が閉じているか否かを確実に判定でき
る。In the second embodiment, it is possible to reliably determine whether the operation valve is closed regardless of the room temperature.
【００２６】[0026]
【発明の効果】第１の発明においては、空気調和機の運
転を開始することによって圧縮機の運転周波数が基準値
以上になったときに周波数判断手段は判定指令を出力
し、判定手段はこの判定指令を受けたときに熱交温度セ
ンサによって検出された室内熱交換器の温度が冷房運転
時所定値以下、暖房運転時所定値以上にならない場合に
は操作弁が閉じていると判定するので、操作弁が閉じら
れたまま空気調和機の運転を継続することによって圧縮
機が損傷するのを未然に防止できる。また、圧縮機の運
転周波数が基準値以上のとき、操作弁が閉じているか否
かを判定しているので、圧縮機の運転周波数が基準値以
下で圧縮機に過負荷が掛かった場合に判定手段が誤判定
するのを防止できる。[Effect of the Invention] In the first invention, the frequency determining means to come with the operating frequency of the compressor is equal to or greater than the reference value by initiating the operation of the air conditioner outputs a determination command
When the temperature of the indoor heat exchanger detected by the heat exchange temperature sensor at the time of receiving this determination command is not less than the predetermined value during the cooling operation and not more than the predetermined value during the heating operation,
Because determines that steering Sakuben is closed, can be prevented from the compressor is damaged by continuing the operation of the left air conditioner operating valve is closed. When the operating frequency of the compressor is equal to or higher than the reference value, it is determined whether the operating valve is closed.Therefore, when the operating frequency of the compressor is equal to or lower than the reference value and the compressor is overloaded, the determination is made. It is possible to prevent erroneous determination by the means.
【００２７】第２の発明においては、空気調和機の運転
を開始することによって圧縮機の運転周波数が基準値以
上になったとき周波数判断手段は判定指令手段を出力
し、熱交温度センサによって検出された室内熱交換器の
温度と吸込空気温度センサによって検出された室内熱交
換器の吸込空気温度との温度差が演算手段によって演算
され、判定手段は判定指令を受けたときに演算手段によ
って演算された温度差が基準値以下の場合には操作弁が
閉じていると判定する。従って、室内熱交換器の温度と
室内熱交換器の吸込空気温度との温度差と圧縮機の運転
周波数との相対関係に基づいて操作弁が閉じているか否
かを判定しているので、室温に拘らず確実に判定でき
る。[0027] In the second invention, the frequency determining means can the operating frequency of the compressor is equal to or greater than the reference value by initiating the operation of the air conditioner outputs a determination command means
Then, a temperature difference between the temperature of the indoor heat exchanger detected by the heat exchange temperature sensor and the suction air temperature of the indoor heat exchanger detected by the suction air temperature sensor is calculated by the calculation means, and the determination means issues a determination command. When received by the arithmetic means
If the calculated temperature difference is less than the reference value it is determined that steering Sakuben is closed. Therefore, based on the relative relationship between the temperature difference between the temperature of the indoor heat exchanger and the temperature of the intake air of the indoor heat exchanger and the operating frequency of the compressor, whether the operation valve is closed or not is determined.
The so it is determined whether, can be reliably determined regardless of the room temperature.
【００２８】操作弁が閉じていると判定されたとき、こ
れを異常表示手段によって表示し、かつ、圧縮機を異常
停止手段によって停止すれば、圧縮機の損傷を確実に防
止できるとともに操作弁が閉じていることを認識できる
ので操作弁を直ちに開として空気調和機の運転を迅速に
再開することができる。When it is determined that the operation valve is closed, this is displayed by the abnormality display means, and if the compressor is stopped by the abnormality stop means, damage to the compressor can be reliably prevented and the operation valve can be prevented. Since it can be recognized that the air conditioner is closed, the operation valve can be opened immediately and the operation of the air conditioner can be quickly restarted.
【図１】本発明の第１の実施例を示す系統図である。FIG. 1 is a system diagram showing a first embodiment of the present invention.
【図２】本発明の第２の実施例を示す系統図である。FIG. 2 is a system diagram showing a second embodiment of the present invention.
【図３】第２の実施例における基準値を説明するための
線図である。FIG. 3 is a diagram for explaining reference values in a second embodiment.
【図４】従来の分離型空気調和機の冷媒回路図である。FIG. 4 is a refrigerant circuit diagram of a conventional separation type air conditioner.
【図５】運転開始当初における室内熱交換器の温度の時
間的変化を示す線図である。FIG. 5 is a diagram showing a temporal change in the temperature of the indoor heat exchanger at the beginning of operation.
Ｏ 室外ユニット １ インバータ駆動圧縮機 14 室外熱交換器 ３、11 配管接続用操作弁 Ｉ 室内ユニット ６ 室内熱交換器 ４、10 接続配管 20 保護装置 19 熱交温度センサ 21 周波数判断手段 25 基準値設定手段 22 判定手段 26 冷房用所定値設定手段 27 暖房用所定値設定手段 23 異常停止手段 24 異常表示手段 O Outdoor unit 1 Inverter driven compressor 14 Outdoor heat exchanger 3, 11 Piping connection control valve I Indoor unit 6 Indoor heat exchanger 4, 10 Connection piping 20 Protector 19 Heat exchange temperature sensor 21 Frequency judgment means 25 Reference value setting Means 22 Judgment means 26 Predetermined value setting means for cooling 27 Predetermined value setting means for heating 23 Abnormal stop means 24 Abnormal display means
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F24F 11/02 F24F 11/02 102 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) F24F 11/02 F24F 11/02 102
Claims (3)
圧縮機の運転周波数を変更するためのインバータと配管
接続用操作弁を備え、その冷媒回路内に冷媒を封入して
上記操作弁を閉じた状態で出荷される室外ユニットと、
少なくとも室内熱交換器を備え、その冷媒回路内に冷媒
を封入せずに出荷される室内ユニットとを具備し、上記
室外ユニットと上記室内ユニットとを据え付けた後これ
らを接続配管を介して接続して上記操作弁を開としてな
る分離型空気調和機において、上記室内熱交換器の温度
を検出する熱交温度センサを設けるとともに空気調和機
の運転を開始することによって上記圧縮機の運転周波数
が基準値以上になったときに判定指令を出力する周波数
判断手段と、この周波数判断手段からの判定指令を受け
たときに上記熱交温度センサの検出温度が冷房運転時所
定値以下、暖房運転時所定値以上にならないとき、上記
操作弁が閉じていると判定する判定手段を具備する保護
装置を設けたことを特徴とする分離型空気調和機。1. At least an outdoor heat exchanger, a compressor and
Equipped with an inverter for changing the operating frequency of the compressor and an operation valve for connecting pipes , the refrigerant is sealed in the refrigerant circuit
An outdoor unit shipped with the operation valve closed ;
At least an indoor heat exchanger, and refrigerant in the refrigerant circuit
Was equipped with an indoor unit that is shipped without encapsulation, the
After installing the outdoor unit and the indoor unit,
In the operating valve are connected via a connecting piping et open and then formed by separate type air conditioner, the air conditioner provided with a heat exchanger temperature sensor for detecting the temperature of the indoor heat exchanger
Frequency determination means for outputting a determination command when the operation frequency of the compressor becomes equal to or higher than a reference value by starting the operation of the compressor, and receiving a determination command from the frequency determination means.
When the temperature detected by the heat exchange temperature sensor does not become equal to or less than a predetermined value during cooling operation and does not become equal to or more than a predetermined value during heating operation, a protection device including a determination unit that determines that the operation valve is closed is provided. A separation type air conditioner characterized by the following.
圧縮機の運転周波数を変更するためのインバータと配管
接続用操作弁を備え、その冷媒回路内に冷媒を封入して
上記操作弁を閉じた状態で出荷される室外ユニットと、
少なくとも室内熱交換器を備え、その冷媒回路内に冷媒
を封入せずに出荷される室内ユニットとを具備し、上記
室外ユニットと上記室内ユニットとを据え付けた後これ
らを接続配管を介して接続して上記操作弁を開としてな
る分離型空気調和機において、上記室内熱交換器の温度
を検出する熱交温度センサと上記室内熱交換器の吸込空
気温度を検出する吸込空気温度センサを設けるとともに
これら熱交温度センサの検出値と吸込空気温度センサの
検出値との温度差を演算する演算手段と、空気調和機の
運転を開始することによって上記圧縮機の運転周波数が
基準値以上になったときに判定指令を出力する周波数判
断手段と、この周波数判断手段からの判定指令を受けた
ときに上記演算手段によって演算された温度差が基準値
以下のとき、上記操作弁が閉じていると判定する判定手
段を具備する保護装置を設けたことを特徴とする分離型
空気調和機。2. At least an outdoor heat exchanger, a compressor and
Equipped with an inverter for changing the operating frequency of the compressor and an operation valve for connecting pipes , the refrigerant is sealed in the refrigerant circuit
An outdoor unit shipped with the operation valve closed ;
At least an indoor heat exchanger, and refrigerant in the refrigerant circuit
Was equipped with an indoor unit that is shipped without encapsulation, the
After installing the outdoor unit and the indoor unit,
In connected via a connecting piping et separate type air conditioner comprising a open the operating valve, the suction air temperature of the heat exchanger temperature sensor and the indoor heat exchanger for detecting the temperature of the indoor heat exchanger A suction air temperature sensor to detect
Calculating means you calculating the temperature difference between the detection value and the suction detection value of the air temperature sensor of the heat exchanger temperature sensor, the operating frequency of the compressor based by initiating <br/> operation of the air conditioner Frequency judgment means for outputting a judgment command when the value becomes equal to or more than the value, and a judgment command from the frequency judgment means
When the temperature difference calculated by the calculation means is equal to or smaller than a reference value, a protection device including a determination means for determining that the operation valve is closed is provided.
作弁が閉じていると判定されたとき、上記判定手段から
の判定結果を受けてこれを表示する異常表示手段と圧縮
機の運転を停止する異常停止手段を備えていることを特
徴とする請求項１又は２記載の分離型空気調和機。3. The protection device according to claim 1, wherein the determining device determines that the operating valve is closed by the determining device.
The determination result received by abnormal display means and the separation-type air conditioner according to claim 1 or 2, characterized in that it comprises an abnormality stop means for stopping the operation of the compressor to display it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34384593A JP3202465B2 (en) | 1993-12-17 | 1993-12-17 | Separate type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34384593A JP3202465B2 (en) | 1993-12-17 | 1993-12-17 | Separate type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07174386A JPH07174386A (en) | 1995-07-14 |
| JP3202465B2 true JP3202465B2 (en) | 2001-08-27 |
Family
ID=18364685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34384593A Expired - Lifetime JP3202465B2 (en) | 1993-12-17 | 1993-12-17 | Separate type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3202465B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671799A (en) * | 2019-10-12 | 2020-01-10 | 青岛海信日立空调***有限公司 | Air conditioning system and refrigerant flow control method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002243240A (en) * | 2001-02-14 | 2002-08-28 | Daikin Ind Ltd | Refrigerating device |
| JP4710571B2 (en) * | 2005-11-30 | 2011-06-29 | パナソニック株式会社 | Air conditioner |
| JP5283560B2 (en) * | 2009-05-08 | 2013-09-04 | 三菱電機株式会社 | Air conditioner |
| JP2011149622A (en) * | 2010-01-21 | 2011-08-04 | Fujitsu General Ltd | Air conditioner |
-
1993
- 1993-12-17 JP JP34384593A patent/JP3202465B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671799A (en) * | 2019-10-12 | 2020-01-10 | 青岛海信日立空调***有限公司 | Air conditioning system and refrigerant flow control method |
| CN110671799B (en) * | 2019-10-12 | 2021-02-19 | 青岛海信日立空调***有限公司 | Air conditioning system and refrigerant flow control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07174386A (en) | 1995-07-14 |
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