JPS6146351B2 - - Google Patents
Info
- Publication number
- JPS6146351B2 JPS6146351B2 JP56168217A JP16821781A JPS6146351B2 JP S6146351 B2 JPS6146351 B2 JP S6146351B2 JP 56168217 A JP56168217 A JP 56168217A JP 16821781 A JP16821781 A JP 16821781A JP S6146351 B2 JPS6146351 B2 JP S6146351B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- compressor
- level
- electromagnetic clutch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001816 cooling Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009429 electrical wiring Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3225—Cooling devices using compression characterised by safety arrangements, e.g. compressor anti-seizure means or by signalling devices
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は自動車客室の空調を行なう装置におい
て特に空気冷却を行なう部分つまり冷房装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air-cooling part of an apparatus for air-conditioning a passenger compartment of an automobile, that is, a cooling apparatus.
一般に、冷房専用の空調装置あるいは冷却空気
の再加熱部も備えた空調装置においては、自動車
用エンジンから回転駆動力を受けて冷媒コンプレ
ツサを作用させ、それによつて循環される冷媒を
用いて冷却用熱交換器が吸熱作用をなすように構
成されている。 Generally, in an air conditioner dedicated to cooling, or an air conditioner equipped with a reheating section for cooling air, a refrigerant compressor receives rotational driving force from an automobile engine, and the refrigerant circulated by the compressor is used for cooling. The heat exchanger is configured to have an endothermic effect.
しかして、そのコンプレツサにおいて、冷媒ガ
スの不足のため同ガスに混入される潤滑オイルの
効果が弱められたり、あるいは部品の破損などの
ためにコンプレツサがロツクしたまま停止する
と、自動車用エンジンや電磁クラツチなどの連結
部品に多大な負荷が加わり、２次的な故障を生じ
るおそれが生じる。 However, if the effect of the lubricating oil mixed with the refrigerant gas is weakened due to a lack of refrigerant gas in the compressor, or if the compressor locks up and stops due to damage to parts, it may damage the automobile engine or electromagnetic clutch. A large load is applied to the connected parts such as, and there is a risk of secondary failure.
本発明は、上述した２次故障を防止するととも
に例えば車両点火系ノイズ、電源電圧変動などに
よる以上誤判定を防止することを目的とするもの
で、判定に遅延作用を設定し遅延出力で電磁クラ
ツチを遮断しコンプレツサを停止する構成にする
ことにより、外乱に対しての誤動を防止すること
を特徴とする。 The purpose of the present invention is to prevent the above-mentioned secondary failures as well as to prevent erroneous judgments due to vehicle ignition system noise, power supply voltage fluctuations, etc., by setting a delay effect in the judgment and using a delayed output to control the electromagnetic clutch. The compressor is configured to shut off and stop the compressor, thereby preventing erroneous operation due to external disturbances.
図示する本発明の実施例について説明すると、
第１図において、１Ａは自動車エンジンの出力軸
の回転に同期してパルス信号を発生する第１のタ
イミングセンサ、２Ａは上記エンジンの出力軸に
生じる回転トルクを図示しないプーリーおよびＶ
ベルト、さらに電磁クラツチ５を介して伝達され
るコンプレツサの中心軸回転に同期してパルス信
号を発生する第２のタイミングセンサである。こ
れら各センサが生じるパルス信号の周波数は各々
エンジン、コンプレツサの軸回転速度に比例す
る。 To describe the illustrated embodiment of the invention:
In FIG. 1, 1A is a first timing sensor that generates a pulse signal in synchronization with the rotation of the output shaft of the automobile engine, and 2A is a pulley (not shown) and V
This is a second timing sensor that generates a pulse signal in synchronization with the rotation of the center shaft of the compressor, which is transmitted through the belt and further through the electromagnetic clutch 5. The frequency of the pulse signals generated by each of these sensors is proportional to the shaft rotational speed of the engine and compressor, respectively.
１および２は、第１、第２のタイミングセンサ
からのパルス信号を周波数−電圧変換するＦ−Ｖ
変換回路で、各変換回路の出力端に生じる直流電
圧の値は入力パルス信号の周波数、従つてエンジ
ン回転速度またはコンプレツサ回転速度に対応し
たものとなる。 1 and 2 are F-Vs that perform frequency-voltage conversion of pulse signals from the first and second timing sensors.
In the converter circuits, the value of the DC voltage produced at the output of each converter circuit corresponds to the frequency of the input pulse signal and thus to the engine speed or compressor speed.
３は異常判定回路で、上記２つのＦ−Ｖ変換回
路１，２の出力電圧を比較する電圧比較回路から
構成される。コンプレツサ回転速度／エンジン回
転作土の速度比が通常は１程度であるのに対し、
コンプレツサのロツク時には著しく低下する。こ
のため、この比較回路では上記速度比が例えば
0.8以下のときＨレベル信号を生じるように設定
されている。例えばエンジン側変換回路１の出力
電圧を4/5に分圧して比較回路の一方の入力と
し、コンプレツサ側変換回路２の出力電圧をその
まま比較回路の他の入力とすればよい。そして、
判定回路３は前記速度比が0.8以上であるとＬレ
ベル0.8以下になるとＨレベルの出力信号を生じ
る。 Reference numeral 3 denotes an abnormality determination circuit, which is comprised of a voltage comparison circuit that compares the output voltages of the two F-V conversion circuits 1 and 2. While the compressor rotation speed/engine rotation speed ratio is usually about 1,
It drops significantly when the compressor is locked. Therefore, in this comparator circuit, the above speed ratio is, for example,
It is set to generate an H level signal when the value is 0.8 or less. For example, the output voltage of the engine-side conversion circuit 1 may be divided into 4/5 and used as one input of the comparison circuit, and the output voltage of the compressor-side conversion circuit 2 may be used as the other input of the comparison circuit. and,
The determination circuit 3 generates an output signal of H level when the speed ratio is 0.8 or more and the L level becomes 0.8 or less.
３Ａは電源供給開始時に判定回路３の出力を一
定時間だけＬレベルとする遅延回路である。 3A is a delay circuit that keeps the output of the determination circuit 3 at L level for a certain period of time when power supply is started.
３Ｂは遅延回路で、判定回路のＨレベル出力が
所定時間続いたときにＬレベル出力を生じる遅延
回路である。 3B is a delay circuit that produces an L level output when the H level output of the determination circuit continues for a predetermined period of time.
４は遅延回路３Ｂからの出力信号に応答する継
電回路で、接点リレーを用いて構成され、その接
点を電磁クラツチ５の接地側通電路に接続してい
る。 Reference numeral 4 designates a relay circuit that responds to the output signal from the delay circuit 3B, and is constructed using a contact relay, the contact of which is connected to the ground side energizing path of the electromagnetic clutch 5.
６は車載バツテリからの給電路に設けたメイン
スイツチで、エアコンスイツチと呼ばれるスイツ
チである。なお、各回路への電源線は図示を省略
してある。 6 is a main switch installed on the power supply path from the on-board battery, and is a switch called an air conditioner switch. Note that illustration of power supply lines to each circuit is omitted.
上記構成において、スイツチ６が投入される
と、判定回路３の出力は一定時間はＬレベルとな
るので、その間遅延回路はＨレベル出力を生じ、
継電回路４は電磁クラツチ５の一端を接地状態と
し、電磁クラツチ５は通電され付勢状態となつて
コンプレツサを駆動する。コンプレツサの回転速
度は速やかに立ち上がり、判定回路３において速
度比の判定が可能になる。 In the above configuration, when the switch 6 is turned on, the output of the determination circuit 3 is at L level for a certain period of time, so the delay circuit produces an H level output during that time.
The relay circuit 4 grounds one end of the electromagnetic clutch 5, and the electromagnetic clutch 5 is energized and energized to drive the compressor. The rotational speed of the compressor quickly rises, and the determination circuit 3 can determine the speed ratio.
判定回路３は速度比が0.8以上のときＬレベル
出力を生じて、コンプレツサの駆動状態を保つ
が、速度比0.8以下になり、かつその状態が遅延
回路３Ｂに設定された時限を越えると、継電回路
４のリレー接点が開いて電磁クラツチ５の通電を
遮断する。コンプレツサの回転速度は零になるの
で、判定回路３はＨレベル出力を生じつづけ、コ
ンプレツサは停止のままとなる。 The determination circuit 3 generates an L level output when the speed ratio is 0.8 or more to maintain the compressor driving state, but when the speed ratio becomes 0.8 or less and the state exceeds the time limit set in the delay circuit 3B, The relay contact of the electric circuit 4 opens to cut off the energization of the electromagnetic clutch 5. Since the rotational speed of the compressor becomes zero, the determination circuit 3 continues to produce an H level output, and the compressor remains stopped.
ここで、遅延回路３Ｂは判定回路３の出力が正
規の判定によらずにＨレベルとなることが一瞬あ
つても電磁クラツチ５の通電を断としないように
作用する。 Here, the delay circuit 3B functions so that the electromagnetic clutch 5 does not become energized even if the output of the determination circuit 3 momentarily goes to the H level without making a proper determination.
遅延回路３Ｂの詳細例を第２図に示す。７は比
較器であり、抵抗７Ａ，７Ｂにより分圧されたＡ
点の基準電位に対して、判定回路３の出力がＬレ
ベルかＨレベルかにより定まる抵抗８とコンデン
サ９の結合点Ｂの電位が高いか否かを比較して、
電磁クラツケの駆動信号を出すよう構成それてい
る。１１は図示しない定電圧電源の出力端であ
る。 A detailed example of the delay circuit 3B is shown in FIG. 7 is a comparator, and the voltage A divided by resistors 7A and 7B is
Compare whether or not the potential at the connection point B between the resistor 8 and the capacitor 9, which is determined by whether the output of the determination circuit 3 is at L level or H level, is higher than the reference potential at the point.
It is configured to output a driving signal for an electromagnetic crank. 11 is an output end of a constant voltage power supply (not shown).
この回路の作動について説明すると、いま速度
比が正常範囲にあつて判定回路３がＬレベルを出
力していると、Ｂ点の電位は抵抗８，１０の分圧
電位とほぼ等しくなり、この値はＡ点より低くな
るように設定してあるので比較器７の出力はＨレ
ベルである。 To explain the operation of this circuit, if the speed ratio is currently in the normal range and the determination circuit 3 is outputting L level, the potential at point B will be approximately equal to the divided potential of resistors 8 and 10, and this value is set to be lower than point A, so the output of comparator 7 is at H level.
次に速度比が以上範囲になると判定回路３がＨ
レベルの出力を生じる。この場合コンデンサ９は
抵抗８と１０とから充電され、Ｂ点電位はその並
列抵抗とコンデンサ容量とで決まる時定数で上昇
する。やがてＢ点電位がＡ点電位を越えると比較
器７の出力はＬレベルとなる。 Next, when the speed ratio is in the above range, the judgment circuit 3 goes high.
produces a level output. In this case, capacitor 9 is charged by resistors 8 and 10, and the potential at point B rises with a time constant determined by the parallel resistance and capacitance. When the potential at point B eventually exceeds the potential at point A, the output of comparator 7 becomes L level.
しかして、速度比が正常範囲にある場合におい
て、例えば電源電圧の急変動などにより判定回路
３がごく短時間だけＨレベルを出力しても、遅延
回路３Ｂの出力がＬレベルになるには、定められ
た時間を要するので、コンプレツサが誤つて停止
してしまうことがない。 Therefore, when the speed ratio is within the normal range, even if the determination circuit 3 outputs an H level for a very short time due to a sudden change in the power supply voltage, for example, the output of the delay circuit 3B becomes an L level. This prevents the compressor from stopping accidentally.
なお、遅延回路３Ｂと判定回路３の組合せは上
記の実施例に限るものではなく、変形することが
可能で、例えばデジタル処理回路を要いてもよ
い。 Note that the combination of the delay circuit 3B and the determination circuit 3 is not limited to the above embodiment, and may be modified, for example, a digital processing circuit may be required.
以上のように本発明は判定に遅延機能を設けた
ので、外乱等による誤動を起こすことなく異常時
には確実に冷房装置を確実に停止することができ
るという優れた効果がある。 As described above, since the present invention provides a delay function for determination, it has the excellent effect of being able to reliably stop the cooling device in the event of an abnormality without causing malfunctions due to external disturbances or the like.
第１図は本発明の一実施例を示す電気結線図、
第２図は第１図中遅延回路３Ｂの詳細を示す電気
結線図である。
１Ａ……第１のタイミングセンサ（第１の検出
手段）、２Ａ……第２のタイミングセンサ（第２
の検出手段）、１，２……周波数電圧変換回路、
３……判定回路、３Ｂ……遅延回路（変換回路
１，２ならびに判定回路３とで演算手段をな
す）、４……継電回路、５……電磁クラツチ、６
……メインスイツチ。
FIG. 1 is an electrical wiring diagram showing an embodiment of the present invention;
FIG. 2 is an electrical wiring diagram showing details of the delay circuit 3B in FIG. 1. 1A...First timing sensor (first detection means), 2A...Second timing sensor (second detection means)
(detection means), 1, 2... frequency voltage conversion circuit,
3... Judgment circuit, 3B... Delay circuit (conversion circuits 1 and 2 and judgment circuit 3 form a calculation means), 4... Relay circuit, 5... Electromagnetic clutch, 6
...Main switch.
Claims (1)
検出手段と、前記エンジンによつて電磁クラツチ
を介して駆動される冷房用コンプレツサの回転速
度に応答する第２の検出手段と、前記第１、第２
の検出手段からの検出信号により（コンプレツサ
回転速度／エンジン回転速度）の速度比が所定の
比率関係にあるか否かを判定し、所定の比率関係
でない状態が所定の時間を越えると出力信号を生
じる演算手段と、この演算手段の出力信号により
前記電磁クラツチを遮断する継電手段とを包含し
てなる自動車用冷房装置。1 a first detection means responsive to the rotational speed of an automobile engine; a second detection means responsive to the rotational speed of a cooling compressor driven by the engine via an electromagnetic clutch; 2
Based on the detection signal from the detection means, it is determined whether the speed ratio (compressor rotation speed/engine rotation speed) is in a predetermined ratio relationship, and if the condition that the predetermined ratio relationship does not exist exceeds a predetermined time, an output signal is output. 1. A cooling device for an automobile, comprising a calculation means for generating a signal, and a relay means for interrupting the electromagnetic clutch according to an output signal of the calculation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56168217A JPS5871214A (en) | 1981-10-20 | 1981-10-20 | Automobile's cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56168217A JPS5871214A (en) | 1981-10-20 | 1981-10-20 | Automobile's cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5871214A JPS5871214A (en) | 1983-04-27 |
| JPS6146351B2 true JPS6146351B2 (en) | 1986-10-14 |
Family
ID=15863955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56168217A Granted JPS5871214A (en) | 1981-10-20 | 1981-10-20 | Automobile's cooler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5871214A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6116919U (en) * | 1984-07-05 | 1986-01-31 | サンデン株式会社 | Compressor drive control device for automotive air conditioners |
| JPS632607U (en) * | 1986-06-25 | 1988-01-09 | ||
| JPS6319421U (en) * | 1986-07-23 | 1988-02-08 | ||
| JP4183425B2 (en) * | 2002-03-07 | 2008-11-19 | 三洋電機株式会社 | Air conditioner and control method thereof |
| JP2006285337A (en) * | 2005-03-31 | 2006-10-19 | Oki Electric Ind Co Ltd | Reference current generating circuit |
| KR100634192B1 (en) | 2005-09-30 | 2006-10-16 | 씨멘스 오토모티브 주식회사 | Mtheod for controlling air condition of car |
| JP2019010913A (en) * | 2017-06-29 | 2019-01-24 | ダイハツ工業株式会社 | Air conditioner for vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226302A (en) * | 1975-08-25 | 1977-02-26 | Kokan Mining Co Ltd | Method of preeheating pellet |
| JPS55685A (en) * | 1979-04-14 | 1980-01-07 | Toshiba Corp | Filter unit |
| JPS55100430A (en) * | 1979-01-24 | 1980-07-31 | Hitachi Ltd | Protector for compressor driver |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834516Y1 (en) * | 1969-12-28 | 1973-10-18 | ||
| JPS5033632Y1 (en) * | 1970-08-26 | 1975-10-01 | ||
| JPS546204Y2 (en) * | 1973-03-20 | 1979-03-22 | ||
| JPS51115332U (en) * | 1975-03-14 | 1976-09-18 |
-
1981
- 1981-10-20 JP JP56168217A patent/JPS5871214A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226302A (en) * | 1975-08-25 | 1977-02-26 | Kokan Mining Co Ltd | Method of preeheating pellet |
| JPS55100430A (en) * | 1979-01-24 | 1980-07-31 | Hitachi Ltd | Protector for compressor driver |
| JPS55685A (en) * | 1979-04-14 | 1980-01-07 | Toshiba Corp | Filter unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5871214A (en) | 1983-04-27 |
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