JPS6385423U

JPS6385423U -

Info

Publication number: JPS6385423U
Application number: JP18005586U
Authority: JP
Priority date: 1986-11-21
Filing date: 1986-11-21
Publication date: 1988-06-03

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の全体構成図、第２
図は本考案に適用される可変容量型圧縮機の縦断
面図、第３図は制御部のブロツク図、第４図はミ
ツクスドアの開度特性線図、第５図は送風機の送
風量特性線図、第６図は圧縮機の設定吸入圧特性
線図、第７図は制御回路における制御電流の制御
手段の一実施態様としての回路図、第８図はデユ
ーテイ比制御における電圧波形図、第９図は信号
入力回路における入力信号の無効手段の一実施態
様としての回路図、第１０図、第１１図は制御手
順を示すフローチヤート、第１２図は入力信号の
波形図、第１３図は制御電流特性線図、第１４図
は吸入圧特性線図、第１５図は圧縮機の設定吸入
圧と制御電流との関係を示す特性線図、第１６図
は制御電流特性線図、第１７図は吸入圧特性線図
、第１８図は従来における制御電流の波形図、第
１９図は従来における吸入圧特性線図である。１４……可変容量型圧縮機。 Figure 1 is an overall configuration diagram of one embodiment of the present invention, Figure 2
The figure is a longitudinal cross-sectional view of the variable displacement compressor applied to the present invention, Figure 3 is a block diagram of the control section, Figure 4 is the opening characteristic curve of the mix door, and Figure 5 is the air flow characteristic curve of the blower. 6 is a set suction pressure characteristic diagram of the compressor, FIG. 7 is a circuit diagram as an embodiment of control current control means in the control circuit, FIG. 8 is a voltage waveform diagram in duty ratio control, and FIG. FIG. 9 is a circuit diagram of an embodiment of the input signal disabling means in the signal input circuit, FIGS. 10 and 11 are flowcharts showing control procedures, FIG. 12 is a waveform diagram of the input signal, and FIG. Control current characteristic diagram, Figure 14 is a suction pressure characteristic diagram, Figure 15 is a characteristic diagram showing the relationship between compressor setting suction pressure and control current, Figure 16 is a control current characteristic diagram, and Figure 17 is 18 is a conventional control current waveform diagram, and FIG. 19 is a conventional suction pressure characteristic diagram. 14...Variable displacement compressor.

Claims

[Scope of utility model registration request]

For vehicles equipped with a variable displacement compressor configured to automatically control its own discharge capacity based on an internal signal so that the suction pressure becomes a set value, and to be able to control the set value based on an external signal. 1. A control device for a vehicle air conditioner, characterized in that the rate of change of a control signal for a set suction pressure is set to a predetermined value or less.