JP2880509B2 - Engine driven air conditioner - Google Patents
Engine driven air conditionerInfo
- Publication number
- JP2880509B2 JP2880509B2 JP63075980A JP7598088A JP2880509B2 JP 2880509 B2 JP2880509 B2 JP 2880509B2 JP 63075980 A JP63075980 A JP 63075980A JP 7598088 A JP7598088 A JP 7598088A JP 2880509 B2 JP2880509 B2 JP 2880509B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- pressure
- heat exchanger
- detected
- predetermined value
- 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
Landscapes
- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明はエンジン駆動式空調装置、特に冷暖房負荷に
適確に対応した熱交換を行なって快適な空調を行なうエ
ンジン駆動式空調装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine-driven air conditioner, and more particularly, to an engine-driven air conditioner that performs comfortable air conditioning by performing heat exchange appropriately corresponding to a cooling and heating load.
＜従来の技術＞ 空調装置においては、冷暖房負荷に対応した熱交換を
室外側熱交換器で行なわせることが、快適な空調条件を
設定するために必要である。<Conventional Technology> In an air conditioner, it is necessary to cause a heat exchanger corresponding to a cooling and heating load to be performed by an outdoor heat exchanger in order to set comfortable air conditioning conditions.
従来のエンジン駆動式空調機では、この熱交換条件の
設定のために、外気温を測定し、この外気温度に基づい
て室外側熱交換器に流入する風量を定めるファンの回転
速度を調整し、或はファンの稼動台数の切換えを行なっ
ていた。In a conventional engine-driven air conditioner, for setting the heat exchange conditions, the outside air temperature is measured, and the rotation speed of a fan that determines the amount of air flowing into the outdoor heat exchanger is adjusted based on the outside air temperature, Alternatively, the number of operating fans has been switched.
＜発明が解決しようとする課題＞ 空調機の冷暖房負荷は、外気温のみで設定されるので
はなく、室内温度によっても影響を受けるので、従来の
ように外気温に基づいてファンの風量調整を行なうと、
冷暖房負荷が大きいのに室外側熱交換器の交換熱量が減
少したり或は冷暖房負荷が小さいのに室外側熱交換器の
交換熱量が増大したりする。<Problems to be Solved by the Invention> Since the cooling and heating load of the air conditioner is not set only by the outside air temperature but also affected by the indoor temperature, the air flow of the fan is adjusted based on the outside air temperature as in the conventional case. When you do
The heat exchange capacity of the outdoor heat exchanger is reduced while the cooling / heating load is large, or the heat exchange capacity of the outdoor heat exchanger is increased even though the cooling / heating load is small.
本発明の目的は、冷暖房負荷に対応した適確な熱交換
を室外側熱交換器に行なわせ、快適な空調動作を行なう
エンジン駆動式空調装置を提供することにある。An object of the present invention is to provide an engine-driven air conditioner that performs an appropriate heat exchange corresponding to a cooling and heating load in an outdoor heat exchanger and performs a comfortable air conditioning operation.
＜課題を解決するための手段＞ 前記の目的を達成するために、本発明では室外側熱交
換器の冷媒圧力に基づいて室外側熱交換器を流れる空気
量を制御するような構成となっている。即ち本発明は、
コンプレッサ、冷媒流路切換弁、室内側熱交換器、減圧
素子及び室外側熱交換器よりヒートポンプ回路を形成
し、前記室外側熱交換器を介して外気を流すファンを具
備し、前記コンプレッサをエンジンで駆動する空調装置
であって、前記室外側熱交換器の冷媒圧力を検出するセ
ンサと、前記センサの検出信号に基づいて前記ファンの
風量を制御する制御手段とを有する構成となっている。<Means for Solving the Problems> In order to achieve the above object, the present invention is configured to control the amount of air flowing through the outdoor heat exchanger based on the refrigerant pressure of the outdoor heat exchanger. I have. That is, the present invention
A compressor, a refrigerant flow switching valve, an indoor heat exchanger, a pressure reducing element, and a heat pump circuit formed by an outdoor heat exchanger; and a fan for flowing outside air through the outdoor heat exchanger. The air conditioner is configured to include a sensor for detecting a refrigerant pressure of the outdoor heat exchanger, and control means for controlling an air flow rate of the fan based on a detection signal of the sensor.
＜作用＞ 本発明では、空調機のヒートポンプ回路において室外
側熱交換器の冷媒の圧力をセンサで検出し、その検出値
に基づいて室外側熱交換器に外気を流すファンの風量が
制御される。<Operation> In the present invention, in the heat pump circuit of the air conditioner, the pressure of the refrigerant in the outdoor heat exchanger is detected by a sensor, and the airflow of the fan that flows outside air to the outdoor heat exchanger is controlled based on the detected value. .
例えば、センサの検出値が予め設定された所定圧力
（冷房運転時と暖房運転時で異なる）よりも3kg/cm2gを
越えて高い場合にはファンの風量が最大とされ、検出値
が所定圧力よりも3kg/cm2g以上低い場合にはファン風量
は最小とされ、検出値が所定圧力±3kg/cm2gの範囲にあ
る時にはファンの風量は中位に設定されるように、風量
の３段切換えが行なわれる。For example, if the detected value of the sensor is higher than a predetermined pressure (different between the cooling operation and the heating operation) by more than 3 kg / cm 2 g, the fan airflow is maximized and the detected value is If the pressure is 3 kg / cm 2 g or more lower than the pressure, the fan air volume is minimized, and if the detected value is within the specified pressure ± 3 kg / cm 2 g, the fan air volume is set to a medium value. Is performed.
＜実施例＞ 以下、本発明の実施例を図面を用いて詳細に説明す
る。<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図は本発明の実施例の構成を示す説明図であり、
エンジン１によって二つのコンプレッサ２が駆動され、
それぞれのコンプレッサ２を含む二つのヒートポンプ回
路が形成されているが、これらのヒートポンプ回路は同
一なので以下一方のヒートポンプ回路について説明す
る。FIG. 1 is an explanatory diagram showing a configuration of an embodiment of the present invention,
Two compressors 2 are driven by the engine 1,
Two heat pump circuits including the respective compressors 2 are formed. Since these heat pump circuits are the same, one of the heat pump circuits will be described below.
コンプレッサ２には四方弁５が接続されているが、第
１図に実線で示す状態は四方弁５の切替えで暖房運転が
選択された場合で、同図で点線で示す状態は冷房運転が
選択された場合である。暖房運転の場合を説明すると、
この四方弁５から冷媒は室内側熱交換器６に送られ、室
内側熱交換器６ではコンプレッサ２で圧縮された冷媒が
凝縮熱を放出し、室内側熱交換器６が取り付けられてい
る部屋が暖房されるようになっている。冷媒は、この室
内側熱交換器６から逆止弁７を介してレシーバ９に送出
されるようにヒートポンプ回路が形成され、レシーバ９
において冷媒の液量変化が平滑化されるようになってい
る。A four-way valve 5 is connected to the compressor 2. The state shown by a solid line in FIG. 1 is a case where heating operation is selected by switching the four-way valve 5, and a state shown by a dotted line in FIG. This is the case. Explaining the case of heating operation,
The refrigerant is sent from the four-way valve 5 to the indoor heat exchanger 6, where the refrigerant compressed by the compressor 2 releases heat of condensation, and the room to which the indoor heat exchanger 6 is attached. Is to be heated. A heat pump circuit is formed so that the refrigerant is sent from the indoor side heat exchanger 6 to the receiver 9 via the check valve 7.
, The change in the liquid amount of the refrigerant is smoothed.
次いで冷媒は膨張弁11を介して室外側熱交換器12に送
出され、室外側熱交換器12から気化熱を吸収して蒸発
し、蒸発した冷媒が室外側熱交換器からアキュムレータ
４を介してコンプレッサ２に送られるように、ヒートポ
ンプ回路が形成されている。Next, the refrigerant is sent to the outdoor heat exchanger 12 via the expansion valve 11, absorbs the heat of vaporization from the outdoor heat exchanger 12 and evaporates, and the evaporated refrigerant passes through the accumulator 4 from the outdoor heat exchanger. A heat pump circuit is formed so as to be sent to the compressor 2.
また、エンジン１の廃熱を吸収した冷却水が、第１図
に点線で示すように循環ポンプ30によって、エンジン１
から室外側熱交換器に送られ、冷媒回路を流れる冷媒と
熱交換することによって冷却されるような構成となって
いる。Further, the cooling water having absorbed the waste heat of the engine 1 is supplied to the engine 1 by the circulation pump 30 as shown by a dotted line in FIG.
From the outside to the outdoor heat exchanger, and is cooled by heat exchange with the refrigerant flowing through the refrigerant circuit.
実施例においては、室外側熱交換器12に冷媒の圧力を
検出するセンサ19が取り付けられ、このセンサ19の出力
端子が制御回路20に接続され、制御回路20にファン駆動
回路21が接続されている。In the embodiment, a sensor 19 for detecting the pressure of the refrigerant is attached to the outdoor heat exchanger 12, an output terminal of the sensor 19 is connected to the control circuit 20, and a fan drive circuit 21 is connected to the control circuit 20. I have.
第２図はセンサ19、制御回路20及びファン駆動回路21
の構成を示す回路図であり、センサ19はセンサ本体22、
増幅回路23及びローパスフィルタ24で構成され、このロ
ーパスフィルタ24の出力端子がAD変換器25とマイクロコ
ンピュータ26で構成される制御回路20のAD変換器25の入
力端子に接続され、AD変換器25にはマイクロコンピュー
タ26が接続されている。そして、マイクロコンピュータ
26の出力信号によってファン駆動回路21によって点弧角
制御が行なわれ、室外側熱交換器12の風量を制御するフ
ァン17のモータＭの回転速度が３段階に切換えられるよ
うになっている。なお、ファン駆動回路21のスイッチン
グ素子としてホトトライアック（商標名）が使用されて
いるので、マイクロコンピュータ26の出力信号（直流5
V）と制御回路20の点弧角制御信号（交流200V）間は電
気的に絶縁され、安定な制御が行なわれるようになって
いる。FIG. 2 shows a sensor 19, a control circuit 20, and a fan drive circuit 21.
FIG. 2 is a circuit diagram showing the configuration of
An output terminal of the low-pass filter 24 is connected to an input terminal of an AD converter 25 of a control circuit 20 including an AD converter 25 and a microcomputer 26. Is connected to a microcomputer 26. And a microcomputer
The firing angle control is performed by the fan drive circuit 21 in accordance with the output signal of 26, and the rotation speed of the motor M of the fan 17 for controlling the air volume of the outdoor heat exchanger 12 is switched in three stages. Since a photo triac (trade name) is used as a switching element of the fan drive circuit 21, the output signal of the microcomputer 26 (DC 5
V) and the firing angle control signal (200 V AC) of the control circuit 20 are electrically insulated so that stable control is performed.
このような構成の実施例において、制御回路20とファ
ン駆動回路21とが制御手段を構成している。In the embodiment having such a configuration, the control circuit 20 and the fan drive circuit 21 constitute control means.
次に、本発明の実施例の動作を第３図及び第４図
（Ａ）（Ｂ）を用いて説明する。ここで第３図は実施例
の全体の動作を示すフローチャート、第４図（Ａ）
（Ｂ）は実施例のそれぞれ冷房運転時及び暖房運転時の
演算動作を示すフローチャートである。Next, the operation of the embodiment of the present invention will be described with reference to FIGS. 3 and 4 (A) and (B). Here, FIG. 3 is a flowchart showing the entire operation of the embodiment, and FIG. 4 (A)
(B) is a flowchart showing the arithmetic operation at the time of the cooling operation and the heating operation of the embodiment, respectively.
第３図のステップS1において初期化が行なわれ、この
時Ｌ側及びＲ側のファンの風量は中位に設定され、ステ
ップS2に進んでセンサ19でＬ側の室外側熱交換器12の冷
媒圧力が検出され、検出値Psがメモリに書き込まれる。Initialization is performed in step S1 of FIG. 3, and at this time, the air volumes of the L-side and R-side fans are set to a medium level, and the process proceeds to step S2 where the sensor 19 detects the refrigerant of the L-side outdoor heat exchanger 12 The pressure is detected, and the detected value Ps is written to the memory.
次に、ステップS3においてＬ側ヒートポンプ回路で暖
房運転が行なわれているか否かの判定が行なわれ、暖房
運転が行なわれていればS4に進んで暖房演算が行なわ
れ、冷房運転が行なわれていればS5に進んで冷房演算が
行なわれ、ステップS6に進んでＬ側のファンの風量fLが
メモリに書き込まれる。Next, in step S3, it is determined whether or not the heating operation is being performed in the L-side heat pump circuit. If the heating operation is being performed, the process proceeds to S4 where the heating calculation is performed and the cooling operation is being performed. If so, the flow proceeds to S5 to perform the cooling operation, and proceeds to step S6 to write the air flow fL of the L-side fan into the memory.
ステップS7に進んでＲ側の室外側熱交換器12の冷媒圧
力がセンサ19で検出され、検出値Psがメモリに書き込ま
れる。ステップS8に進んでＲ側ヒートポンプ回路で暖房
運転が行なわれているか否かの判定が行なわれ、暖房運
転の場合にはステップS9に進んで暖房演算が行なわれ、
冷房運転の場合にはステップS10に進んで冷房演算が行
なわれる。Proceeding to step S7, the refrigerant pressure of the R-side outdoor heat exchanger 12 is detected by the sensor 19, and the detected value Ps is written to the memory. Proceeding to step S8, it is determined whether the heating operation is being performed in the R-side heat pump circuit. In the case of the heating operation, the process proceeds to step S9 to perform the heating calculation,
In the case of the cooling operation, the process proceeds to step S10 to perform the cooling calculation.
次いでステップS11においてＲ側のファンの風量fRが
メモリに書き込まれ、ステップS12に進んでＬ側のファ
ン風量fLとＲ側のファン風量fRの大きな方に系のファン
風量ｆが設定され、S13に進んでこのファン風量ｆでの
運転が行なわれる。Next, in step S11, the air flow rate fR of the R-side fan is written into the memory, and the process proceeds to step S12, where the system airflow rate f is set to the larger of the L-side fan airflow fL and the R-side fan airflow fR, Then, the operation is performed at the fan airflow f.
前述のファン風量の演算は、冷房運転時においては、
第４図（Ａ）に示すように行なわれ、ステップSA−１で
メモリに書き込まれた冷媒圧力の検出値Psが、予め設定
された冷房時所定圧力よりも3kg/cm2g以上上廻っている
か否かの判定が行なわれ、検出値Psが冷房時所定圧力よ
りも3kg/cm2g以上高い場合には、ステップSA−２に進ん
でファン風量は大と演算される。The above-described calculation of the fan air volume is performed during the cooling operation.
This is performed as shown in FIG. 4 (A), and the detected value Ps of the refrigerant pressure written in the memory at step SA-1 exceeds the predetermined cooling-time predetermined pressure by 3 kg / cm 2 g or more. If the detected value Ps is higher than the predetermined pressure during cooling by 3 kg / cm 2 g or more, the process proceeds to step SA-2 and the fan airflow is calculated to be large.
ステップSA−１で検出値Psが、冷房時所定圧力よりも
3kg/cm2g以上高い値P1よりも小さいと判定されると、ス
テップSA−３に進んで検出値Psが冷房時所定圧力よりも
3kg/cm2g以上低い値P2よりも小さいか否かの判定が行な
われる。ステップSA−３でPs≦P2と判定されると、ステ
ップSA−４に進んでファン風量は小と演算される。ま
た、ステップSA−３でPs＞P2と判定されると、ステップ
SA−５に進んでファン風量は中位と演算される。In step SA-1, the detected value Ps is lower than the predetermined pressure during cooling.
If it is determined to be smaller than 3 kg / cm 2 g or more high value P 1, than the detected value Ps is cooling during the predetermined pressure the flow proceeds to step SA-3
Small whether a determination is made than 3 kg / cm 2 g or more low value P 2. If it is determined that Ps ≦ P 2 in step SA-3, the fan air flow proceeds to step SA-4 is calculated small. When determined in Step SA-3 Ps> P 2 and, step
Proceeding to SA-5, the fan air volume is calculated as medium.
同様にして暖房運転時におけるファン風量の演算は、
第４図（Ｂ）のステップSB−１においてメモリに書き込
まれた冷媒圧力の検出値Psが、予め設定された暖房時所
定圧力よりも1kg/cm2g以上上廻っているか否かの判定が
行なわれ、検出値Psが暖房時所定圧力よりも1kg/cm2g以
上高い場合には、ステップSB−２に進んでファン風量は
小と演算される。Similarly, the calculation of the fan air volume during the heating operation is as follows.
It is determined whether or not the detected value Ps of the refrigerant pressure written in the memory in step SB-1 of FIG. 4 (B) exceeds the predetermined pressure at the time of heating by 1 kg / cm 2 g or more. When the detected value Ps is higher than the predetermined pressure at the time of heating by 1 kg / cm 2 g or more, the process proceeds to step SB-2 and the fan air volume is calculated to be small.
ステップSB−１で検出値Psか、暖房時所定圧力よりも
1kg/cm2g以上高い値P3よりも小さいと判定されると、ス
テップSB−３に進んで、検出値Psが暖房時所定圧力より
も1kg/cm2g以上低い値P4よりも小さいか否かの判定が行
なわれる。ステップSB−３でPs≦P4と判定されると、ス
テップSB−４に進んでファン風量は大と演算される。ま
た、ステップSB−３でPs＞P4と判定されると、ステップ
SB−５に進んでファン風量は中位と演算される。In step SB-1, the detected value Ps is higher than the predetermined pressure during heating.
If it is determined to be smaller than 1 kg / cm 2 g or more high value P 3, the flow proceeds to step SB-3, the detection value Ps is less than 1 kg / cm 2 g or more lower value P 4 than the heating time of the predetermined pressure Is determined. If it is determined that Ps ≦ P 4 at Step SB-3, the fan air flow proceeds to step SB-4 is calculated large. When determined that Ps> P 4 at Step SB-3, step
Proceeding to SB-5, the fan air volume is calculated as medium.
このようにして第３図及び第４図（Ａ）（Ｂ）によっ
て求められたファン風量に基づいて制御回路20のマイク
ロコンピュータ26から、風量小、中、大に対応してそれ
ぞれ制御信号A1,A2,A3がファン駆動回路21に入力され、
これらの制御信号A1,A2,A3によってモータＭがそれぞれ
低速、中速、高速で回転されファンの風量が制御され
る。In this way, the microcomputer 26 of the control circuit 20 outputs control signals A 1 corresponding to small, medium, and large airflows based on the fan airflows obtained by FIGS. 3 and 4A and 4B, respectively. , A 2 , A 3 are input to the fan drive circuit 21,
The motor M is rotated at low speed, medium speed, and high speed by these control signals A 1 , A 2 , and A 3 to control the air flow of the fan.
このようにして室外側熱交換器12の冷媒の圧力を検出
し、この検出値Psに基づいてファンの風量が制御される
ので、外気温のみならず室内温度にも依存した冷暖房負
荷に適確に対応した熱交換が行なわれ、快適な空調条件
が設定される。In this way, the pressure of the refrigerant in the outdoor heat exchanger 12 is detected, and the airflow of the fan is controlled based on the detected value Ps. Is performed, and comfortable air conditioning conditions are set.
また、過負荷運転時にはファンの回転速度が自動的に
増大するので、ファンの容量及び室外側熱交換器の表面
積を必要以上に大きく設計する必要がなく、装置が小型
化される。さらに、低負荷時にはファンの回転速度が自
動的に減少するので、例えば夜間の冷房運転時に不必要
なファンの騒音が耳ざわりとなることもない。Further, since the rotation speed of the fan automatically increases during the overload operation, it is not necessary to design the capacity of the fan and the surface area of the outdoor heat exchanger unnecessarily large, and the apparatus is downsized. Furthermore, since the rotation speed of the fan is automatically reduced at a low load, unnecessary fan noise is not distracting during a cooling operation at night, for example.
なお、ヒートポンプ回路のコンプレッサ吐出側圧力の
変化が少ないために、効率のよい安定した運転が行なわ
れコンプレッサの寿命も延長する。Since there is little change in the pressure on the compressor discharge side of the heat pump circuit, efficient and stable operation is performed and the life of the compressor is extended.
第５図は発明者の測定したファンの回転速度と騒音と
の関係であり、ファンの回転速度と騒音との間にはほぼ
直線関係が認められ、本発明の実施によってファンの回
転速度を制御することにより不必要なファンの騒音を大
幅に低減することが出来ることは明らかである。FIG. 5 shows the relationship between the fan rotation speed and the noise measured by the inventor, and a substantially linear relationship is recognized between the fan rotation speed and the noise, and the rotation speed of the fan is controlled by implementing the present invention. It is clear that this can greatly reduce unnecessary fan noise.
＜発明の効果＞ 以上詳細に説明したように、本発明によると冷暖房負
荷に対応した適確な熱交換を行なって、快適な空調動作
を行ない、全体も小型化され製造コストも低減させるこ
とが可能なエンジン駆動式空調機を提供することが出来
る。<Effects of the Invention> As described in detail above, according to the present invention, it is possible to perform an accurate heat exchange corresponding to a cooling / heating load, perform a comfortable air-conditioning operation, reduce the overall size and reduce the manufacturing cost. A possible engine-driven air conditioner can be provided.
第１図は本発明の実施例の構成を示す説明図、第２図は
本発明の実施例におけるセンサと制御手段との構成を示
す回路図、第３図及び第４図（Ａ）（Ｂ）は本発明の実
施例の動作を示すフローチャート、第５図はファン回転
速度と騒音との関係を示す特性図である。 １……エンジン、２……コンプレッサ ６……室内側熱交換器、12……室外側熱交換器 17……ファン、19……センサ 20……制御回路、21……ファン駆動回路FIG. 1 is an explanatory view showing a configuration of an embodiment of the present invention, FIG. 2 is a circuit diagram showing a configuration of a sensor and a control means in the embodiment of the present invention, and FIGS. 3 and 4 (A) and (B). 5) is a flowchart showing the operation of the embodiment of the present invention, and FIG. 5 is a characteristic diagram showing the relationship between the fan rotation speed and noise. 1 ... engine 2 ... compressor 6 ... indoor heat exchanger 12 ... outdoor heat exchanger 17 ... fan 19 ... sensor 20 ... control circuit 21 ... fan drive circuit
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F25B 27/00 B Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) F25B 27/00 B
Claims (1)
交換器、減圧素子及び室外側熱交換器よりヒートポンプ
回路を形成し、前記室外側熱交換器を介して外気を流す
ファンを具備し、前記コンプレッサをエンジンで駆動す
る空調装置であって、前記室外側熱交換器の冷媒圧力を
検出するセンサと、冷房時には前記センサにより検出さ
れた冷媒圧力と冷房時所定圧力とを比較演算し、暖房時
には前記センサにより検出された冷媒圧力と暖房時所定
圧力とを比較演算し、比較演算結果に基づいて前記ファ
ンの風量を制御する制御手段とを有し、前記制御手段
は、 冷房時には、検出冷媒圧力が冷房時所定圧力よりも所定
値以上高いときには前記ファンを高速運転とし、検出冷
媒圧力が冷房時所定圧力よりも所定値以上低いときには
前記ファンを低速運転とし、検出冷媒圧力と冷房時所定
圧力との差が所定値以内であるときには前記ファンを中
速運転とするようにファンの風量を制御し、 暖房時には、検出冷媒圧力が暖房時所定圧力よりも所定
値以上高いときには前記ファンを低速運転とし、検出冷
媒圧力が暖房時所定圧力よりも所定値以上低いときには
前記ファンを高速運転とし、検出冷媒圧力と暖房時所定
圧力との差が所定値以内であるときには前記ファンを中
速運転とするようにファンの風量を制御する、 ことを特徴とするエンジン駆動式空調装置。1. A heat pump circuit comprising a compressor, a refrigerant flow switching valve, an indoor heat exchanger, a pressure reducing element and an outdoor heat exchanger, and a fan for flowing outside air through the outdoor heat exchanger. An air conditioner that drives the compressor with an engine, a sensor that detects a refrigerant pressure of the outdoor heat exchanger, and performs a comparison operation between a refrigerant pressure detected by the sensor during cooling and a predetermined pressure during cooling, Control means for comparing the refrigerant pressure detected by the sensor at the time of heating with a predetermined pressure at the time of heating, and controlling the air volume of the fan based on the result of the comparison operation; When the refrigerant pressure is higher than a predetermined value during cooling by a predetermined value or more, the fan is operated at a high speed, and when the detected refrigerant pressure is lower than a predetermined value by a predetermined value during cooling, the fan is set to a low level. When the difference between the detected refrigerant pressure and the predetermined pressure during cooling is within a predetermined value, the air volume of the fan is controlled so that the fan operates at medium speed. When the detected refrigerant pressure is lower than a predetermined pressure during heating by a predetermined value or more, the fan is set to high speed operation when the detected refrigerant pressure is lower than a predetermined pressure during heating, and the difference between the detected refrigerant pressure and the predetermined pressure during heating is a predetermined value. An engine-driven air conditioner, wherein the air flow of the fan is controlled so that the fan operates at a medium speed when the temperature is within the range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63075980A JP2880509B2 (en) | 1988-03-31 | 1988-03-31 | Engine driven air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63075980A JP2880509B2 (en) | 1988-03-31 | 1988-03-31 | Engine driven air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01252876A JPH01252876A (en) | 1989-10-09 |
| JP2880509B2 true JP2880509B2 (en) | 1999-04-12 |
Family
ID=13591915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63075980A Expired - Lifetime JP2880509B2 (en) | 1988-03-31 | 1988-03-31 | Engine driven air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2880509B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5901786A (en) * | 1998-09-21 | 1999-05-11 | Ford Motor Company | Axial fan sandwich cooling module incorporating airflow by-pass features |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5993160A (en) * | 1982-11-17 | 1984-05-29 | 株式会社デンソー | Air conditioner for automobile |
| JPS62233433A (en) * | 1986-03-31 | 1987-10-13 | Aisin Seiki Co Ltd | Engine speed control device for outdoor type air-conditioner |
-
1988
- 1988-03-31 JP JP63075980A patent/JP2880509B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01252876A (en) | 1989-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2902611B2 (en) | Louver drive device for air conditioner and control method therefor | |
| JP3356551B2 (en) | Air conditioner | |
| JPH06307705A (en) | Humidity control method for air conditioner | |
| JPH01181032A (en) | Air conditioner | |
| JPS6159145A (en) | Air conditioner | |
| JPH10197028A (en) | Air conditioner | |
| JP2880509B2 (en) | Engine driven air conditioner | |
| JPH1096545A (en) | Air conditioner and control method thereof | |
| JPH10103739A (en) | Air conditioner | |
| JP4483141B2 (en) | Air conditioner | |
| JPH025310Y2 (en) | ||
| JP2806140B2 (en) | Air conditioner operation control method | |
| JP2933384B2 (en) | Air conditioner | |
| JP3526393B2 (en) | Air conditioner | |
| JPH0436535A (en) | Method of operating indoor fan of air conditioner | |
| JP2901206B2 (en) | Multi-room air conditioner | |
| JP7495625B2 (en) | Air Conditioning Equipment | |
| JP2002257382A (en) | Air conditioner | |
| JPH06337176A (en) | Air-conditioner | |
| JP3109369B2 (en) | Air conditioner | |
| WO2024023916A1 (en) | Air conditioner | |
| JP2001174024A (en) | Air conditioner | |
| JPH06137633A (en) | Air conditioner | |
| JP2850466B2 (en) | Engine-driven air conditioner | |
| JPH0120604Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080129 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090129 Year of fee payment: 10 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090129 Year of fee payment: 10 |