JP3084555B2 - Automatic drain discharge method and discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique relating to an automatic drain discharge method and a discharge apparatus.
The present invention relates to a technique for discharging drain accumulated from compressed air from an air compressor or the like so that the drain does not remain, especially when the operation is completed.

[0002]

2. Description of the Related Art As a conventional technique relating to an automatic drain discharge method and a discharge device, as shown in FIG. 3, power is supplied to the entire automatic drain discharge device and, at the same time, a compressor constituting an air compressor is provided. Starts operating, and at the same time, sends a command to the discharge valve drive to open the discharge valve for a predetermined period of time, whereby the drain accumulated in the air tank constituting the air compressor is discharged from the discharge valve to the outside. Had been discharged.

[0003]

However, such conventional automatic drain discharge methods and discharge devices include:
There were the following issues. First, since the drain that discharges the drain only when the compressor that constitutes the air compressor starts to use, the drain generated after discharging the drain constitutes the air compressor until the next drain discharge. It was accumulated in the air tank.

[0004] Secondly, if the use of the compressor constituting the air compressor is used for a long time, there is a problem that a large amount of drain is accumulated. Third, if you stop using the compressor that makes up the air compressor and turn off the power, the drain will remain as it is, and after a number of years, the inside of the air compressor will corrode. There was a problem. An object of the present invention is to solve such a problem.

[0005]

Means for Solving the Problems The present invention provides an automatic drain discharge method for discharging a drain produced from the compressed air, the power unit 11 is an air compressor 1 is stopped Ri Do to OFF
Abolish that when no line discharge drain the rechargeable battery 12 as a power source at the same time, the secondary battery 12 to the power supply unit 11 is ON
It is characterized by charging while the power supply unit 11 is turned on. Further, when the measurement time started at the same time when the power supply unit 11 is turned on reaches the set value, the drain is simultaneously discharged. The above problem is solved by performing zero setting of the measurement time.

In an automatic drain discharger for discharging drain generated from compressed air, a power supply section 11 of the entire automatic drain discharger and a charging circuit connected to the power supply section 11 are provided.
Drain discharge when the power supply unit 11 is turned off
A secondary battery 12 used as a power source for the
Power ON to detect whether is turned ON or OFF
Detecting unit 8 and measuring the time from when the power-on detecting unit 8 detects that the power unit 11 is turned on, or when it reaches a preset value and completes draining; A cycle timer 13 for sending a drain discharge signal when a preset value is reached;
A discharge timer 14 for sending a drain discharge operation control signal for a predetermined time when the detection unit 8 detects that the power supply unit 11 is OFF or when receiving a drain discharge signal from the cycle timer 13; The above problem is solved by comprising a discharge valve drive unit 10 receiving a drain discharge operation control signal from a discharge timer 14 and a discharge unit 5 whose opening and closing are controlled by the discharge valve drive unit 10. Settled.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic drain discharge method and a discharge device according to the present invention will be described in detail with reference to the drawings and embodiments. Here, FIG. 1 is a diagram showing the overall configuration of the present invention, and FIG. 2 is a time chart of the present invention.

In FIG. 1, reference numeral 1 denotes an air compressor, which stores a compressed air generated by a compressor 7 for compressing air and a motor (not specifically shown) connected to the compressor 7. The power supply unit 11 is turned on when the pressure in the air tank and the air tank that constitutes the air compressor 1 decreases, and the power supply unit 11 increases when the pressure increases.
And a pressure switch 4 for turning off.
Therefore, the pressure switch 4 is directly connected to the power supply unit 11, and the compressor 7 is connected to the power supply unit 11 at the motor part.

Here, the compressed air stored in the air tank needs various kinds of compressed air via a pipe 2 as required (not specifically shown) such as an air cylinder and an air motor. Sent to pneumatic equipment. The drain generated in the air tank constituting the air compressor 1 normally remains in the air tank as it is, but can be discharged to the outside via the discharge valve 5.

On the other hand, the opening and closing of the discharge valve 5 for discharging the drain accumulated in the air tank to the outside is controlled by a discharge valve driving unit 10. Further, the discharge valve driving unit 10 receives a drain discharge operation control signal from the discharge timer 14 for a predetermined time for discharging the drain in order to control the opening and closing of the discharge valve 5. Power supply from
The FF signal is received from the cycle timer 13 because the time measurement has reached the set value and the drain discharge signal is received.

The cycle timer 13 is a timer for measuring the time from when the compressor 7 constituting the air compressor 1 starts operating and when the power supply unit 11 is turned on. When the set value is reached, a drain discharge signal is sent to the discharge timer 14.

The drain timer 14 is set when the power is turned off from the power ON detector 8 or when a drain discharge signal is output from the cycle timer 13 when the set value is reached. Drain valve drive 10 during time
To the drain discharge operation control signal.

Further, a cycle timer 13 for measuring the time from when the power is turned on after the air compressor 7 constituting the air compressor 1 starts operating is provided with a signal when the power is turned off. A signal is received from the power-on detecting section 8 together with the discharge timer 14 received.

A secondary battery 12 is provided in parallel with the power supply 11.
Is installed, and the power supply of the entire automatic drain discharger is O
A charging circuit is provided so that the secondary battery 12 can be charged from the power supply unit 11 while the N-compressor 7 is operating.

Accordingly, a secondary battery 12, a pressure switch 4, a compressor 7 via a motor, a power-on detection unit 8, a discharge valve driving unit 10, and the like are connected to a power supply unit 11 of the entire automatic drain discharge device, and the power is supplied to the power supply unit 11. Can be supplied.

The automatic drain discharge method and discharge device according to the present invention are configured as described above.
The operation will be described.

First, the power supply unit 1 of the entire automatic drain discharge device
The power supply 1 is turned on, and the motor connected to the compressor 7 constituting the air compressor 1 is operated.
At the same time, the compressor 7 connected to the motor operates to store the compressed air in the air tank constituting the air compressor 1.

Here, when the pressure of the compressed air stored in the air tank constituting the air compressor 1 becomes high, the power switch 11 connected to the motor is turned off by the action of the pressure switch 4, so that The operation of the compressor 7 is also stopped according to the motor.

On the other hand, when the compressed air stored in the air tank constituting the air compressor 1 is used in various pneumatic devices via the pipe 2, the pressure of the compressed air stored in the air tank decreases. Then, the operation of the pressure switch 4 turns on the power supply unit 11 connected to the motor, and accordingly, the compressor 7 operates according to the motor and stores the compressed air in the air tank.

Therefore, as shown in FIGS. 2B and 2C, while the compressor 7 is in operation, the power supply unit 11 as the whole automatic drain discharge device is ON, The next battery 12 is charged.

At the same time when the power is turned on, FIG.
As seen in (b) and (e), the compressor 7 also starts to operate and turns on, and the cycle timer 13 for counting the measurement time is also set to zero before starting. In this case, as shown in FIG. 2D, since the compressor 7 is operating, drain is generated in the air tank.

In particular, as shown in part (e) of FIG. 2, if the pressure switch is turned off before the cycle timer 13 reaches a predetermined set value, the entire automatic drain discharge device becomes The power supply unit 11 is also turned off, and the compressor 7 is also turned off. Also, this power supply unit 11
When the state becomes F, as shown in FIG. 2C, the automatic drain discharge device operates using the secondary battery 12 as a power source, and in this case, the secondary battery 12 is charged.

Then, A of the drain discharge shown in FIG.
As seen from C and D, when the power supply unit 11 is turned off, the compressor 7 is also turned off, and the drain is immediately discharged for the set time of the discharge timer 14.

On the other hand, as can be seen from drain discharge B in FIGS. 2E and 2F, the measurement time from when the power is turned on by the cycle timer 13 and the compressor 7 starts operating is counted. When the set value is reached, the drainage by the cycle timer 13 is performed. Therefore, the discharge timer 14 outputs a drain discharge operation control signal only for a set time according to the drain discharge signal of the cycle timer 13.

As can be seen from the remaining part of FIG. 2E, when the count of the measurement time of the cycle timer 13 reaches the set value, the drain is discharged and the cycle timer A timer clear signal is sent to 13 to return the counter to the initial value of zero setting.

In the description so far, the drain discharge in the air compressor 1 has been mainly described. However, the present invention is not limited to the air compressor 1 alone. Alternatively, the present invention can be applied to other devices such as a dryer.

In this case, the power supply is commonly used for the power supply unit 11 used for the air compressor 1, and as described above, the 0N and 0FF of the power supply unit 11 used for the air compressor 1 are used. Drain discharge is performed by the operation accompanying. However, a power supply different from the power supply unit 11 used for the air compressor 1 may be installed mainly in a cooler, a dryer, or the like.

[0028]

As is clear from the above description, the following effects can be obtained by the present invention. First, drain can be reliably discharged with a simple circuit configuration.

Secondly, the drain is discharged while the compressor is running or when the compressor is turned off.
The drain is discharged immediately after the pressure switch is turned off, so that clean air can be supplied without leaving the drain in the air compressor, and the drain is discharged immediately after the compressor is stopped. I don't mind the noise associated with the emissions.

Third, the automatic drain discharge device of the present invention
Since the power is turned on only while the compressor is operating, no extra power is consumed during standby, and low power consumption is achieved. Fourth, since the drain is discharged immediately after the stop of the compressor, the drain does not remain even after the operation is completed. Therefore, corrosion in the air compressor can be prevented.

Fifth, since no drain sensor or the like is used in the air compressor, explosion proof can be easily considered. Sixth, since the apparatus is constituted by a cycle timer, a discharge timer, and an electronic circuit, the set time can be easily changed, so that discharge can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a diagram showing the overall configuration of the present invention.

FIG. 2 is a time chart of the present invention.

FIG. 3 is a conventional time chart.

[Explanation of symbols]

 1 ... Air compressor 2 ... Piping 4 ... Pressure switch 5 ... Drain valve 7 ... Compressor 8 ... Power ON detection unit 10 ... ···················································································· Discharge timer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16T 1/00 F04B 49/06

Claims (3)

(57) [Claims] In an automatic drain discharging method for discharging drain generated from compressed air, a power supply section (11) is turned off.
At the same time secondary Do Ri air compressor (1) When you stop to
No line discharge drain batteries (12) as a power supply, wherein
As for the secondary battery (12), the power supply (11) is turned on.
Automatic drain discharge method characterized by charging while in operation . 2. When the power supply section (11) is turned on and the measurement time started at the same time as reaching a set value, the drain is simultaneously discharged, and the measurement time is set to zero in accordance with the discharge of the two drains. 2. The method according to claim 1, wherein
Automatic drain discharge method described in 1. 3. An automatic drain discharger for discharging drain generated from compressed air, comprising: a power supply section (11) for the entire automatic drain discharger; and a power supply section connected to the power supply section (11) for charging.
Circuit when the power supply (11) is turned off.
A rechargeable battery (12) used as a power source for discharging the lens, a power ON detection unit (8) for detecting whether the power unit (11) is turned on or off, and a power ON detection unit (8) Detects that the power supply unit (11) is ON,
Or a cycle timer (13) for measuring the time from when drain discharge is completed by reaching a preset set value, and sending a drain discharge signal when the preset set value is reached. A drain discharge operation for a predetermined time when the power ON detection unit (8) detects that the power supply unit (11) is OFF or when a drain discharge signal is received from the cycle timer (13); A discharge timer (14) for sending a control signal, and a discharge valve drive (10) for receiving a drain discharge operation control signal from the discharge timer (14).
And an exhaust unit (5) whose opening and closing are controlled by the exhaust valve drive unit (10).