JPH01267199A - oil changer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Applications] The present invention is applicable to automobile engine oil, torque converter oil,
Regarding oil changers such as Defoil.

[Prior Art] In these oil changers, the amount of new oil and the amount of waste oil are stored in a storage box, and the weight of the storage box is measured using a measuring device such as a load cell to measure the amount of oil.

[Problem B to be solved by the invention] Therefore, in the conventional oil changer as described above,
A measurement error of several grams may occur in one process of removing waste oil and refilling with new oil. If this slick is used for a long period of time, an error in the remaining amount of new oil and waste oil will occur, resulting in air being sucked in due to an insufficient amount of new oil when refueling, or waste oil overflowing from the amount of waste oil. A problem occurs.

An object of the present invention is to provide an oil changer that automates the management of the amount of new oil and waste oil.

[Scaling means for solving the problem] According to the present invention, the amount of waste oil is automatically set by subtracting the measured value after taking out the new oil amount from the measured value before taking out the new oil amount, and the new amount of new oil is set. A control means is provided for automatically setting the amount of new oil by subtracting the value measured when setting the amount of waste oil from the value measured when the amount of waste oil was set.

Preferably, the control means uses a control device configured with a microcomputer, and measurement is performed by a load cell connected to the control device. - [Function] In the oil changer configured as described above,
The control device automatically sets the waste oil amount by subtracting the measured weight of the new oil amount and waste oil amount before taking out the new oil amount from the measured weight of the new oil amount and waste oil amount. The amount of new oil is automatically set by the weight obtained by subtracting the weight measured at the time of setting the amount of waste oil from the weight measured at the time of filling.

[Example] The present invention will be described in detail below with reference to the drawings.

In FIG. 1, inside a main body case 1, an upper chamber 2 and a lower chamber 3 are defined. A door (not shown) is pivotally attached to the front left edge of the lower chamber 3, and a door switch 5 is provided to the right edge to close the door when it is opened.

At the upper part of the lower chamber 3, support beams 6 are horizontally supported on the left and right sides, and a known funnel self is provided at the upper center of the support beams 6. A box 8 is suspended above the funnel self, and the box 8 is formed in the shape of a rectangular parallelepiped with an open front. Then, box 8 is supported by girder 6
A rectangular long hole 9 is formed in the portion through which the hole 9 passes.

The inside bottom of the box 8 has a rectangular parallelepiped-shaped waste oil volume 11.
A is fixedly installed, and a drum-shaped new oil quantity 11b is placed at a.

A hose 12a is inserted into the waste oil amount 11a, and the port 12a is connected to the port 13a via the pump P1 and the solenoid valve ■1.
A nozzle 14 is connected to the hose 13a. The port 12b inserted into the new oil quantity 11b in the same manner is connected to the nozzle 14 via the solenoid valve 2, the pump P2, and the hose 13b. These pumps P1, P2 and electromagnetic valves V1, V2 are connected to a control device 20, which is a control means composed of a microcomputer, provided in the upper chamber 2 along with a roto-self. A display 15 for displaying the measured oil amount and a keyboard 16 for operation and setting the oil amount are connected. Reference numeral 10 in the figure is a liquid level detector installed at the top of the waste oil amount 11a. When the tank 11a is filled with waste oil, it outputs a signal to deactivate the pump P1 or to activate the full tank alarm 17.

In FIG. 2, the control device 20 is composed of a microcomputer, and is provided with a central processing unit (CPU) 21, and the pumps P1, P
It is connected to each second class device. Therefore, signals from each device are input to the central processing unit 21 via the input/output device 22, and signals from the central processing unit 21 are input to the input/output device 22.
The information is transmitted to each of the above-mentioned devices via the . In addition to the central processing unit 21, the control device 20 also includes a ROM (R
OM>23, a RAM (RAM) 24, and a clock 25 are provided.

For example, when replacing the torque converter oil, nozzle 1
4 into the oil pan of the torque converter that is driving the engine and operate the keyboard 16, rrl
The JglI device 20 opens the solenoid valve V1, operates the pump P1, drains the oil from the oil pan, and receives the waste oil in the amount 11a. The weight of the received waste oil is measured by the rotor self, and the control device 20 converts the S1 measurement value and displays the oil amount on the display 15. Then, when the amount of oil removed reaches a certain value, the control device 20 closes the solenoid valve v1 and stops the pump P1.
Next, the solenoid valve (2) is opened and the pump P2 is operated to supply new oil in the amount of new oil 11b to the oil pan.

When the new oil in the new oil amount 11b runs out and is replaced with a new oil amount, that is, when new oil is refilled, the new oil amount and waste oil amount are set as shown in FIG.

That is, when the door is opened and the door switch 5 is turned on (step S1), the control device 20 stores the measured value at that time, that is, the weight W1 of the waste oil and new oil, in the ram 24 based on the signal from the rotor self. do (step 52) 0
Next, when the new oil amount 11b is taken out, if the value obtained by subtracting the current weight W2 from the mold JIW1 is equal to or greater than a certain weight jlWx (for example, 1 kg), it is determined that the new oil amount 11b has been taken out (step S3). , the amount of waste oil is automatically set to be heavy iW2 and stored in the ram 24. Step 54) 1
Next, when adding a new amount of oil 11b, the current heavy iW3
The value obtained by subtracting the weight W2 from is constant! If the Ti amount Wy (for example, 1 kg> or more, it is determined that the new oil amount 11b has been put in step S5), and the new oil amount is @present (W3-W2
) is automatically set and stored in the ram 24 (step S6), the door is closed and the door switch 5 is turned off.
When this happens (step S7), the control ends.

This is done when the waste oil amount 11a is full and the alarm 17 alerts based on the output of the liquid level detector 10, or when the waste oil is discharged from the waste oil amount through the nozzle 14 after a certain number of cars have been replaced. The amount of waste oil to be used is corrected as shown in FIG.

That is, when the discharge switch of the keyboard 16 is pressed and turned ON (step 510), the control device 20 turns on the solenoid valve ■.
1, drive the pump P1 to discharge waste oil from the nozzle 14, and subtract the amount of waste oil stored in the ram 24 based on the signal from the rotor self (step 311).
Next, it is determined whether there is no change in the weight I, that is, when all the waste oil is discharged (step 512), the solenoid valve V1 is closed and the pump P1 is stopped. Therefore, when the waste oil l is negative (step 513), the amount of waste oil is automatically corrected to zero and stored in the ram 24 (step 514), and when it is positive, the control ends.

[Effects of the Invention] Since the present invention is configured as described above, the amount of new oil and waste oil is automatically managed, and the amount of waste oil sucked in by air due to insufficient amount of new oil during refueling is prevented. It is possible to prevent problems such as overflow of waste oil from the amount of waste oil due to incorrect measurement.

[Brief explanation of the drawing]

Fig. 1 is an internal front view showing an embodiment of the present invention, Fig. 2 is a control block diagram, Fig. 3 is a control flow chart for setting the amount of new oil and waste oil when replenishing new oil, and Fig. 4 is FIG. 3 is a control flowchart for correcting the amount of waste oil when discharging waste oil. Pl, P2 --- Pump vl, ■2... Solenoid valve 7... Load cell lla... Waste oil amount 1
1b...New oil amount 20...Control device Fig. 1 Fig. 2 Fig. 3 Fig. 4 C two

Claims (1)

[Claims] The amount of waste oil is automatically set by subtracting the value measured after taking out the new oil can from the value measured before taking out the new oil can, and the value measured when setting the amount of waste oil is calculated from the value measured when the new amount of oil is added. An oil changer characterized by being provided with a control means for automatically setting a new oil amount by reducing the amount of oil.