JPH0364781B2 - - Google Patents
Info
- Publication number
- JPH0364781B2 JPH0364781B2 JP59103338A JP10333884A JPH0364781B2 JP H0364781 B2 JPH0364781 B2 JP H0364781B2 JP 59103338 A JP59103338 A JP 59103338A JP 10333884 A JP10333884 A JP 10333884A JP H0364781 B2 JPH0364781 B2 JP H0364781B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- temperature
- air volume
- predetermined
- control device
- 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
- 238000000034 method Methods 0.000 claims description 19
- 238000004378 air conditioning Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005457 optimization Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012360 testing method 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
- F24F11/0001—Control or safety arrangements for ventilation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
Description
【発明の詳細な説明】
(a) 発明の技術分野
本発明は空気調和システムの送風温度最適化方
式に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to an air temperature optimization method for an air conditioning system.
(b) 技術の背景
ビルデイング等の冷暖房システムの一方式とし
て、変風量方式の空気調和システムが多く使用さ
れている。このシステムは室内目標温度付近に調
節された空気を供給するための空気調和器及びそ
の制御装置と、その空気供給を受け、その時の室
温と目標温度との差に応じて風量を調節して室内
に放出する変風量ユニツトとを主な構成要素とす
る。(b) Background of the technology Variable air volume air conditioning systems are often used as a heating and cooling system for buildings, etc. This system includes an air conditioner and its control device that supply air adjusted to around the indoor target temperature, and receives the air supply and adjusts the air volume according to the difference between the room temperature and the target temperature at that time. The main component is a variable air volume unit that discharges air to the ground.
変風量ユニツトは、各室又は各フロアごとにあ
つて、共通の空気調和器から同じ温度の空気の供
給を受けて、それぞれ個別に、分担する室内の温
度に基づいて風量を制御することができる。 Variable air volume units are located in each room or on each floor, receive air at the same temperature from a common air conditioner, and can individually control the air volume based on the temperature in the room to which they are assigned. .
通常このような空気調和システムは、室内の温
度を所定値に維持すると共に、併せて室内の換気
を行う目的を持つ。 Generally, such an air conditioning system has the purpose of maintaining the indoor temperature at a predetermined value and also ventilating the room.
(c) 従来技術と問題点
しかし、従来のこの種システムにおいては、温
度調節すべき室内の温度が目標値に近くなれば、
変風量ユニツトが風量を漸次減少するので、遂に
は室内換気に必要な風量以下になることがあつ
た。このような状態は、特に季節の変わり目等
の、外気と室内目標温度との差の小さい時等、即
ち室内熱負荷の小さい時に起こり易い。このよう
な状態になると、温度調節の目的は達成される
が、室内換気の目的は達せられず、室内炭酸ガス
濃度の上昇等の好ましくない結果を生ずる。(c) Conventional technology and problems However, in this type of conventional system, if the temperature in the room to be adjusted is close to the target value,
Since the variable air volume unit gradually reduces the air volume, the air volume sometimes falls below the level required for indoor ventilation. Such a situation is particularly likely to occur when the difference between the outside air and the indoor target temperature is small, such as at the change of seasons, that is, when the indoor heat load is small. In such a state, the purpose of temperature regulation is achieved, but the purpose of indoor ventilation is not achieved, and undesirable results such as an increase in indoor carbon dioxide concentration occur.
以上のような状態を避けるために、変風量ユニ
ツトにおいて、温度にかかわらず一定の室内放出
風量以下にはならないようにすることが考えられ
るが、このようにすると室内を過度に冷却または
暖房する場合が生ずることは明らかである。 In order to avoid the above situation, it is possible to use a variable air volume unit so that the air volume emitted into the room does not fall below a certain level regardless of the temperature, but this may cause the room to be excessively cooled or heated. It is clear that this occurs.
(d) 発明の目的
従つて本発明は、上記従来の問題点を解決し
て、空気調和を従来と同等の効率で行い、且つ室
内等の換気に必要な最低風量を確保し得る空気調
和システムの送風温度最適化方式を提供すること
を目的とする。(d) Purpose of the Invention Therefore, the present invention provides an air conditioning system that solves the above-mentioned conventional problems, performs air conditioning with the same efficiency as the conventional one, and secures the minimum air volume necessary for ventilation of a room, etc. The purpose of this paper is to provide a method for optimizing the air temperature.
(e) 発明の構成
その目的は、空気調和器と、制御装置と、各室
内毎に設けられた変風量ユニツトとを有し、温度
調整及び換気調整を行う空気調和システムであつ
て、該変風量ユニツトは、該空気調和器から供給
される空気を、室温と所定値との差に基づいて定
まる流量に制御して送出する送出手段と、該送出
する流量が換気するに十分でないことを検出して
所定信号を発生する検出手段とを有し、該空気調
和器は、該制御装置の制御に従う所定温度の空気
を該変風量ユニツトに供給する供給手段を有し、
該制御装置は、該空気調和器の出力する空気の温
度を予め設定されている温度目標値に維持するよ
うに、該空気調和器を制御し、該検出手段の出力
を監視して、何れかの該検出手段が該所定信号を
発生した場合に、所定の暖房指定が設定されてい
る場合には該温度目標値を所定値だけ減少し、所
定の冷房指定が設定されている場合には該温度目
標値を所定値だけ増加して、新たな該温度目標値
とするように構成されていることを特徴とする送
風温度最適化方式により達成される。(e) Structure of the Invention The purpose of the invention is to provide an air conditioning system that has an air conditioner, a control device, and a variable air volume unit installed in each room, and that adjusts temperature and ventilation. The air volume unit includes a sending means that controls and sends the air supplied from the air conditioner at a flow rate determined based on the difference between the room temperature and a predetermined value, and detects that the air flow rate to be sent out is not sufficient for ventilation. and a detection means for generating a predetermined signal, the air conditioner having a supply means for supplying air at a predetermined temperature to the variable air volume unit under the control of the control device,
The control device controls the air conditioner so as to maintain the temperature of the air output from the air conditioner at a preset temperature target value, monitors the output of the detection means, and detects any one of the following: When the detection means generates the predetermined signal, if a predetermined heating designation is set, the temperature target value is decreased by a predetermined value, and if a predetermined cooling designation is set, the temperature target value is decreased by a predetermined value. This is achieved by an air blowing temperature optimization method characterized in that the temperature target value is increased by a predetermined value to obtain a new temperature target value.
(f) 発明の実施例
第１図は本発明を適用した空気調和システムの
ブロツク図である。(f) Embodiments of the Invention FIG. 1 is a block diagram of an air conditioning system to which the present invention is applied.
外気を導く外気ダクト９を介したダクト５によ
り空気調和器１に導かれる空気が、空気調和器１
の冷水コイル１１により冷却されるか、または温
水コイル１２により加熱された後、送風フアン１
３により給気ダクト６へ送出される。給気ダクト
６は空気調和の対象である各室３の各変風量ユニ
ツト３１へ温度調整された空気を供給する。変風
量ユニツト３１は一般に複数台設けられるが、
各々は独立に、室温設定値と実室温とに基づいて
室内へ送出する風量を制御する。 The air that is guided to the air conditioner 1 by the duct 5 via the outside air duct 9 that leads outside air is
After being cooled by the cold water coil 11 or heated by the hot water coil 12, the blower fan 1
3 to the air supply duct 6. The air supply duct 6 supplies temperature-adjusted air to each variable air volume unit 31 of each room 3 to be air conditioned. Generally, a plurality of variable air volume units 31 are provided, but
Each independently controls the amount of air sent into the room based on the room temperature set value and the actual room temperature.
変風量ユニツト３１より室内へ放出された空気
は、次に還気ダクト７へ吸引され、一部は排気ダ
クト８を介して外気中へ放出され、一部はダクト
５へ還流される。 The air discharged into the room from the variable air volume unit 31 is then sucked into the return air duct 7, a portion of which is discharged into the outside air via the exhaust duct 8, and a portion of which is returned to the duct 5.
空気調和器１における送風温度の調節は制御装
置２により制御される。制御装置２は、例えばマ
イクロプロセツサ２５を主体とした、通常の構成
の制御装置である。温度センサ１６により給気ダ
クト６へ送出される送風温度を測定する。制御装
置２は、センサ１６の測定温度を入力回路２２か
ら読み取り、予め記憶装置２６に設定されている
送風目標温度とセンサ１６から読み取つた温度と
に基づいて、送風が目標温度になるように、冷水
バルブ１４又は温水バルブ１５を開閉するための
信号を出力回路２１から送信する。 Adjustment of the air temperature in the air conditioner 1 is controlled by a control device 2. The control device 2 is a control device having a normal configuration, for example, mainly including a microprocessor 25. The temperature of the air sent to the supply air duct 6 is measured by the temperature sensor 16. The control device 2 reads the temperature measured by the sensor 16 from the input circuit 22, and controls the temperature so that the air blowing reaches the target temperature based on the air blowing target temperature set in advance in the storage device 26 and the temperature read from the sensor 16. A signal for opening and closing the cold water valve 14 or the hot water valve 15 is transmitted from the output circuit 21.
以上の説明は、変風量方式の空気調和システム
における、公知の一般的な制御の流れであるの
で、概要を述べるにとどめる。 The above description is a known general flow of control in a variable air volume type air conditioning system, so it will only be summarized.
本発明においては、制御装置２に入力回路２３
を経て第２の制御情報である最小風量信号２４を
入力する。この信号２４は各変風量ユニツト３１
ごとに設けられる風量センサ３２の出力信号の論
理和である。センサ３２は変風量ユニツト３１の
出力風量が所定風量を越えて減少していることを
検出する目的で設けるものであつて、例えば出力
空気の流速を測定し、一定速度より小さい速度の
場合にオン状態の信号を出すようにすればよい。
このようなセンサは公知の技術により容易に構成
することができる。 In the present invention, the input circuit 23 is provided in the control device 2.
The minimum air volume signal 24, which is the second control information, is inputted through the . This signal 24 is transmitted to each variable air volume unit 31.
This is the logical sum of the output signals of the air volume sensors 32 provided in each case. The sensor 32 is provided for the purpose of detecting that the output air volume of the variable air volume unit 31 has decreased beyond a predetermined air volume.For example, the sensor 32 measures the flow velocity of the output air, and turns on when the flow velocity is lower than a constant velocity. All you have to do is send a status signal.
Such a sensor can be easily constructed using known techniques.
従つて、このようなセンサを使用すれば、信号
線２４の信号は、少なくとも１台の変風量ユニツ
ト３１の出力が所定風量より小さいときはオン状
態となる。 Therefore, if such a sensor is used, the signal on the signal line 24 will be in the ON state when the output of at least one variable air volume unit 31 is smaller than the predetermined air volume.
つぎにこの信号に基づく制御装置２の処理を第
２図を参照して述べる。図は、信号２４に基づき
送風目標温度を更新する処理を中心に、制御装置
２の処理を示す流れ図である。 Next, the processing of the control device 2 based on this signal will be described with reference to FIG. The figure is a flowchart showing the processing of the control device 2, centering on the processing of updating the target air temperature based on the signal 24.
制御装置２は、装置内のタイマ割り込み機能等
の手段を使つて一定時間（例えば５分）ごとに第
２図の処理の入口であるブロツク４１に入るもの
とする。次にブロツク４２で最小風量信号２４の
オン／オフによる分岐が行われる。最小風量信号
がオンであると、ブロツク４６において記憶装置
２６に設定されている冷房／暖房の識別情報によ
り分岐し、冷房中の場合ブロツク４７へ、暖房中
はブロツク４８へ進む。ブロツク４７及び４８の
処理は記憶装置上の送風目標温度を更新すること
を目的とし、ブロツク４７では送風目標温度を一
定値（例えば１℃）高くして新目標温度とし、ブ
ロツク４８では一定値（例えば１℃）低くして新
目標温度とする。従つて、新しい送風目標温度は
冷房または暖房に応じて、それぞれ温度調節効果
を緩める方向に更新される。 It is assumed that the control device 2 enters the block 41, which is the entrance to the process shown in FIG. 2, at fixed time intervals (for example, every 5 minutes) using means such as a timer interrupt function within the device. Next, in block 42, branching is performed by turning on/off the minimum air volume signal 24. If the minimum air volume signal is on, the process branches at block 46 based on the cooling/heating identification information set in the storage device 26, and proceeds to block 47 if cooling is in progress, and to block 48 if heating is in progress. The purpose of the processing in blocks 47 and 48 is to update the target air temperature on the storage device. In block 47, the target air temperature is increased by a certain value (for example, 1°C) to become a new target temperature, and in block 48, the target air temperature is increased to a certain value (for example, 1°C). For example, lower the target temperature by 1°C and set it as the new target temperature. Therefore, the new target air temperature is updated in a direction that reduces the temperature adjustment effect depending on cooling or heating.
次ぎにブロツク４９で新たに設定された送風目
標温度が許容範囲内か否かを検査する。暖房時の
送風温度の上限は主として空気調和される建屋の
構造によつて定まり、通常は室内目標温度＋10℃
程度とされる。又、冷房時の送風温度の下限は主
として結露条件から求められ、室内目標温度−10
℃程度の値が用いられる。 Next, in block 49, it is checked whether the newly set target air temperature is within the allowable range. The upper limit of the air temperature during heating is determined mainly by the structure of the building being air-conditioned, and is usually the indoor target temperature + 10°C.
It is considered to be a degree. In addition, the lower limit of the air blowing temperature during cooling is mainly determined from the dew condensation conditions, and the indoor target temperature - 10
A value on the order of degrees Celsius is used.
ブロツク４９の検査で送風目標温度が限界を越
えていた場合には、ブロツク５０において、上限
又は下限の値に戻される。 If the target air temperature exceeds the limit in the test at block 49, it is returned to the upper or lower limit value at block 50.
次にブロツク５２において、送風目標温度と、
温度センサ１６から読み取る送風温度とに基づい
て、冷水または温水バルブの制御を行うが、これ
については既に述べた。ブロツク５２の後、制御
装置２は第２図の処理を出口５３より出て、再び
タイマ割り込みが起こるまで他の処理を行う。 Next, in block 52, the target air temperature is determined.
The cold water or hot water valve is controlled based on the air blowing temperature read from the temperature sensor 16, which has already been described. After block 52, control unit 2 exits the process of FIG. 2 through exit 53 and performs other processes until a timer interrupt occurs again.
ブロツク４２で最小風量信号２４がオフ状態の
場合には、ブロツク４３へ進む。ブロツク４３，
４４，４５は前述の処理で更新された送風目標温
度を復旧する処理で、ブロツク４３で冷房か暖房
かにより分岐し、冷房の場合はブロツク４４によ
り送風目標温度を一定値低下し、暖房の場合はブ
ロツク４５により一定値高める。この場合の増／
減分である一定値は例えば前記の更新で使つた値
と同じ値とする。 If the minimum air volume signal 24 is in the OFF state at block 42, the process proceeds to block 43. Block 43,
44 and 45 are processes for restoring the target air temperature updated in the above-mentioned process, and the process branches at block 43 depending on whether it is cooling or heating; in the case of cooling, the target air temperature is lowered by a certain value in block 44, and in the case of heating. is increased by a certain value by block 45. Increase in this case/
The constant value that is the decrement is, for example, the same value as the value used in the above update.
ブロツク４４または４５の後ブロツク４９へ進
み、以下前記と同様に処理される。従つて、最小
風量信号がオフの状態が続くと、第２図の処理を
繰り返し行うことにより、送風目標温度は次第に
限界値（冷房の場合は下限、暖房の場合は上限）
に近づく。 After block 44 or 45, the process proceeds to block 49, whereupon the process is the same as described above. Therefore, if the minimum air volume signal remains off, the target air temperature gradually changes to the limit value (lower limit for cooling, upper limit for heating) by repeating the process shown in Figure 2.
approach.
次ぎに、例えば暖房の場合において、最小風量
信号オンの状態になつた変風量ユニツト３１の動
作を考える。この場合、送風温度が上記の処理に
より下降するために、変風量ユニツト３１が送出
風量を変えない場合には、室温の低下を検出する
こととなり、送出風量を増加して室温を上昇する
ように動作する。前記の処理による送風温度の下
降は最小風量信号がオンの間、例えば５分ごとに
繰り返されるので、変風量ユニツト３１は送出風
量を増加し続け、遂に最小風量を越えれば、最小
風量信号がオフ状態になる。冷房の場合には、温
度変化の方向が逆である他は、上記と同様に動作
する。 Next, consider the operation of the variable air volume unit 31 when the minimum air volume signal is turned on, for example in the case of heating. In this case, since the air temperature decreases due to the above process, if the variable air volume unit 31 does not change the air volume, it will detect a decrease in the room temperature and increase the air volume to raise the room temperature. Operate. The decrease in the air temperature caused by the above process is repeated every five minutes, for example, while the minimum air volume signal is on, so the variable air volume unit 31 continues to increase the air volume, and when it finally exceeds the minimum air volume, the minimum air volume signal is turned off. become a state. In the case of cooling, the operation is the same as above except that the direction of temperature change is reversed.
以上により、最小風量信号をオンにした変風量
ユニツト３１の室内においても換気が維持される
ことは明らかである。なお、この場合に最小風量
信号がオフである変風量ユニツト３１において
も、送出風量を増加する結果となるが、何れかの
変風量ユニツト３１で最小風量信号がオンになつ
た場合に限られるので、送風動力の無駄な消費は
限定される。 From the above, it is clear that ventilation is maintained even in the room of the variable air volume unit 31 with the minimum air volume signal turned on. In this case, even in the variable air volume unit 31 whose minimum air volume signal is off, the output air volume is increased, but this is limited to when the minimum air volume signal is turned on in any variable air volume unit 31. , wasteful consumption of blowing power is limited.
(g) 発明の効果
本発明を適用した空気調和システムにおいて
は、少なくとも１台の変風量ユニツト３１が最小
風量以下の風量となつたことを検出して、換気に
必要な風量を維持するようにするので、室内熱負
荷が小さくても過冷却／過暖房になることなく室
内の換気が維持され、且つ平常時の所要風量は経
済的な必要量に維持することができる。(g) Effects of the Invention In the air conditioning system to which the present invention is applied, at least one variable air volume unit 31 detects that the air volume is below the minimum air volume and maintains the air volume necessary for ventilation. Therefore, even if the indoor heat load is small, indoor ventilation can be maintained without overcooling/overheating, and the required air volume in normal times can be maintained at an economically necessary amount.
第１図は本発明を適用した空気調和システムの
ブロツク図、第２図は制御装置における送風目標
温度更新処理の流れ図である。
図において、１は空気調和器、２は制御装置、
１６は送風温度センサ、２１は制御装置の出力回
路、２２及び２３は制御装置の入力回路、２５は
制御装置のプロセツサ、２６は制御装置の記憶装
置、３１は変風量ユニツト、３２は風量センサを
示す。
FIG. 1 is a block diagram of an air conditioning system to which the present invention is applied, and FIG. 2 is a flow chart of a target air temperature update process in a control device. In the figure, 1 is an air conditioner, 2 is a control device,
16 is an air temperature sensor, 21 is an output circuit of the control device, 22 and 23 are input circuits of the control device, 25 is a processor of the control device, 26 is a storage device of the control device, 31 is a variable air volume unit, and 32 is an air volume sensor. show.
Claims (1)
られた変風量ユニツトとを有し、温度調整及び換
気調整を行う空気調和システムであつて、 該変風量ユニツトは、該空気調和器から供給さ
れる空気を、室温と所定値との差に基づいて定ま
る流量に制御して送出する送出手段と、該送出す
る流量が換気するに十分でないことを検出して所
定信号を発生する検出手段とを、 該空気調和器は、該制御装置の制御に従う所定
温度の空気を該変風量ユニツトに供給する供給手
段を有し、 該制御装置は、該空気調和器の出力する空気の
温度を予め設定されている温度目標値に維持する
ように、該空気調和器を制御し、該検出手段の出
力を監視して、何れかの該検出手段が該所定信号
を発生した場合に、所定の暖房指定が設定されて
いる場合には該温度目標値を所定値だけ減少し、
所定の冷房指定が設定されている場合には該温度
目標値を所定値だけ増加して、新たな該温度目標
値とするように構成されていることを特徴とする
送風温度最適化方式。[Scope of Claims] 1. An air conditioning system that includes an air conditioner, a control device, and a variable air volume unit installed in each room, and that adjusts temperature and ventilation, the variable air volume unit comprising: , a sending means for controlling and sending out the air supplied from the air conditioner at a flow rate determined based on the difference between the room temperature and a predetermined value; a detection means for generating a signal; the air conditioner has a supply means for supplying air at a predetermined temperature to the variable air volume unit according to the control of the control device; controlling the air conditioner so as to maintain the temperature of the air at a preset temperature target value, monitoring the output of the detecting means, and detecting that any of the detecting means generates the predetermined signal; In this case, if a predetermined heating designation is set, the temperature target value is decreased by a predetermined value,
An air blowing temperature optimization method characterized in that, when a predetermined cooling designation is set, the temperature target value is increased by a predetermined value to become the new temperature target value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59103338A JPS60248938A (en) | 1984-05-22 | 1984-05-22 | Method of optimization of blow air temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59103338A JPS60248938A (en) | 1984-05-22 | 1984-05-22 | Method of optimization of blow air temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60248938A JPS60248938A (en) | 1985-12-09 |
| JPH0364781B2 true JPH0364781B2 (en) | 1991-10-08 |
Family
ID=14351361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59103338A Granted JPS60248938A (en) | 1984-05-22 | 1984-05-22 | Method of optimization of blow air temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60248938A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0244142A (en) * | 1988-08-02 | 1990-02-14 | Daikin Ind Ltd | Ambient air treating device |
| JPH0257851A (en) * | 1988-08-22 | 1990-02-27 | Tokyo Keiki Co Ltd | Air conditioner |
| JP2772011B2 (en) * | 1989-01-24 | 1998-07-02 | 株式会社東芝 | Air conditioner |
| JPH0350440A (en) * | 1989-07-17 | 1991-03-05 | Toshiba Corp | Air conditioner |
| JPH0379945A (en) * | 1989-08-18 | 1991-04-04 | Taikisha Ltd | Air conditioning system |
| CN110345602B (en) * | 2019-07-15 | 2020-10-30 | 珠海格力电器股份有限公司 | Air conditioner maintenance method and device, computer equipment and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932732A (en) * | 1982-08-13 | 1984-02-22 | Takasago Thermal Eng Co Lts | Variable air volume air conditioning and unit thereof |
-
1984
- 1984-05-22 JP JP59103338A patent/JPS60248938A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932732A (en) * | 1982-08-13 | 1984-02-22 | Takasago Thermal Eng Co Lts | Variable air volume air conditioning and unit thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60248938A (en) | 1985-12-09 |
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