JPH0285886U - - Google Patents

Description

[Brief explanation of drawings]

The attached drawings 1 to 5 are the first part of the present invention.
Fig. 1 shows the overall configuration, Fig. 2 shows the circuit diagram of the sequential timer, Fig. 3 shows the circuit diagram of the time constant circuit, and Fig. 4 shows the delay of the drain detection signal in the time constant circuit. FIG. 5 is a time chart showing the operation of the entire first embodiment, and FIG. 6 is a circuit diagram of the sequential timer of the second embodiment. In the figure, 1... Time constant circuit, 2... Drain sensor, 3... Interrupt signal insertion circuit, 4... Sequential timer, 5... Variable frequency oscillation circuit,
6...Drain discharge valve, 7...Air compressor, DIV...Frequency divider, _OSC1 , _OSC2 ...Frequency oscillator, _OSC3 ...Variable frequency oscillator, S
W ₁ , SW ₂ ...Switch, ICO...
Gate circuit, R ₀ , R ₁ , R ₂ , R ₃ ...resistance,
VR ₁ , VR ₁ ′, VR ₂ , VR ₂ ′...Variable resistor, arrows a, b, c, d...Each position of the time constant circuit, arrow t1...Frequency f ₁ and frequency division value N Time determined by arrow t ₂ ... frequency f ₂ and frequency division value N
The time determined by the arrow t ₃ ... the opening operation time of the drain discharge valve when the power is connected, the arrow t ₄ ... the delay time due to the time constant circuit, the position H ... the specified value, the position L ... the lower limit value, the position h...Indicates the voltage value at which the gate circuit opens and closes.

Claims (1)

[Scope of Claim for Utility Model Registration] Drainage accumulated inside the air compressor and peripheral equipment of the air compressor, such as the receiver tank, aftercooler, dehumidifier, drain separator, etc. connected to the above air compressor, is removed to the outside. a drain discharge valve for discharging; a variable frequency oscillation means for outputting a different frequency signal to the frequency divider according to a frequency switching signal from the frequency divider; and an input of the frequency signal from the variable frequency oscillation means. and controls and outputs the emission signal in accordance with the time determined by the input frequency and the frequency division value, and also outputs the frequency switching signal to the variable frequency oscillation means, and further includes a time control signal. the frequency divider for resetting the input frequency count in response to a reset signal from the constant means, and a sequential timer for controlling opening and closing of the drain discharge valve by starting and stopping the discharge signal; In addition, there is a drain sensor for detecting that drain exceeding a specified value has accumulated in the air compressor or the air compressor peripheral equipment and outputting a drain detection signal, and a drain sensor for outputting a drain detection signal. A delay is added to the detection signal and outputted as the reset signal to the frequency divider, while the interrupt signal insertion means includes a time constant adding means for outputting as the interrupt discharge signal, and a discharge signal from the frequency divider. and an automatic drain discharge device having interrupt signal insertion means for opening and closing the drain discharge valve in response to input of an interrupt discharge signal from the time constant addition means; the time constant addition means 1 is connected to the drain sensor 2; When inputting the drain detection signal from the drain detection signal, start outputting the reset signal to the frequency divider DIV and the interrupt discharge signal to the interrupt signal insertion means 3 in response to the input of the drain detection signal, The automatic drain is characterized in that a delay is added only when the input of the drain detection signal stops, and the output of the reset signal and the interrupt discharge signal is stopped after a predetermined time from the stop of the input of the drain detection signal. Ejection device. The time constant adding means 1 is configured to control the power supply V when the power supply V is connected to the automatic drain discharge device.
2. The automatic drain draining device according to claim 1, wherein said reset signal and said interrupt draining signal are output for a predetermined period of time after said connection. The sequential timer 4 includes two frequency oscillators OSC ₁ and OSC ₂ that output frequency signals of frequencies f ₁ and f ₂ having different high and low frequencies, and the frequency divider DIV from the two frequency oscillators OSC ₁ and OSC ₂ . variable frequency oscillation means 5 consisting of a switching contact SW ₁ for switching the frequency signal to the switching contact SW 1; and a single frequency divider DIV; In _{step 1} , among the two frequency oscillators OSC ₁ and OSC ₂ , the frequency signal from the frequency oscillator OSC ₂ , which oscillates at a higher frequency when emitting the ejection signal, is output, while the ejection signal is not oscillated. The frequency oscillator OSC ₁ of the lower frequency that sometimes oscillates
Claims 1 and 2, characterized in that the frequency signal is switched to output the frequency signal from the
Automatic drain discharge device as described in section. The sequential timer 4 includes a single variable frequency oscillator OSC ₃ that switches frequencies f ₁ and f ₂ of the output frequency signal in response to the frequency switching signal from the frequency divider DIV;
It has a single frequency divider DIV, and the frequency f ₁ and f ₂ of the frequency signal output from the variable frequency oscillator OSC ₃ are switched by the frequency switching signal from the frequency divider DIV. The automatic drain discharge device according to claim 1 or claim 2, wherein: