JPH0656093B2 - Oil changer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for extracting / filling engine oil, torque converter oil, etc. of an automobile.

[Prior Art and its Problems] Conventionally, as this type of device, a waste oil pipeline having a pump for both suction and discharge and one end of which is connected to a waste oil tank is formed,
Suction operation of the pump to extract old oil from the waste oil tank and discharge operation of the pump to discharge old oil from the waste oil tank are performed. A new oil pipeline connected to the tank was provided, and it was configured to perform the filling work to discharge the pump and discharge new oil from the new oil tank, and the refill work to suck the pump and replenish the new oil tank with new oil. The device is known. Further, there is also known a device that automatically performs a work of filling a new oil in an amount corresponding to the amount of the old oil that is withdrawn after the withdrawal work.

By the way, if the waste oil tank is full during the extraction work or the new oil tank is empty during the filling work, the work is interrupted and the waste oil tank or the new oil tank is replaced, or the discharge work is executed. Therefore, it is necessary to discharge the old oil in the waste oil tank to an external container or replenish the new oil tank with new oil. When the sampling / filling work is interrupted and the discharging work or the refilling work is carried out, the sampling work and the discharging work and the filling work and the refilling work are carried out in the same pipeline, respectively. There was a drawback that the amount would go wrong and it would not be possible to continue automatic operation.

[Means for Solving Problems] The present invention includes first and second oil amount detecting means for detecting the amount of oil in each of a waste oil tank and a new oil tank,
Waste oil measuring means for measuring old oil sucked and discharged in the waste oil pipeline, new oil measuring means for measuring new oil discharged and sucked in new oil pipeline, and means for detecting completion of extraction in the extraction work, A means for presetting the amount of oil to be discharged or sucked in the discharging work, the filling work and the refilling work, a means for storing the value measured by each of the measuring means in the withdrawing work or the filling work, and the withdrawing work being completed. Is detected, the same operation is stopped, and the automatic operation of continuously performing the filling operation by the amount according to the withdrawal amount and the discharging operation, the filling operation and the replenishing operation of the amounts set in advance by the setting means are given. A control means for giving control b is provided to solve the above problems.

a. In the sampling operation, if the waste oil tank reaches a predetermined high level before the completion of sampling is detected, the sampling operation is stopped to enable the discharging work, and accordingly, there is a predetermined restart input after the discharging work is executed. Then, the sampling operation is restarted from the sampling amount stored in the storage means.

b. In the filling work, if the new oil tank reaches a predetermined low level before the filling amount reaches the set amount, the filling work is stopped to enable the replenishment work. When the restart input is input, the end point work is restarted from the filling amount stored in the storage means.

[Examples] Specific examples will be described below with reference to the drawings.

FIG. 1 is an external view of an embodiment of the present invention, FIG. 2 is an enlarged view of a control panel portion of the embodiment, and FIG. 3 is a configuration explanatory view of the embodiment. Reference numeral 1 denotes an oil changer main body, which extends a hose 2 outwardly, and is provided with a nozzle 3 at its tip. The nozzle 3 is formed of a pipe material having a thickness that can be inserted into an oil gauge hole of a crankcase of an automobile engine, a torque converter, or the like, and is normally housed in a nozzle holder 4 provided on one side of the main body 1. ing. Reference numeral 6 is a waste oil tank for storing the old oil that has been drawn out, and 7 is a new oil tank for storing new oil to be filled, both of which are mounted on a shelf 8 below the main body 1 and can be taken out freely from the rear of the main body 1.

Inside the main body 1, there are a pump 10, a float switch 11 and a flow meter.
12. Solenoid valves 13 and 14 are provided and are connected by oil pipe lines 15-1 to 15-3 (see FIG. 3). The pump 10 is driven by an electric motor capable of rotating in the forward and reverse directions, and is composed of a positive displacement pump capable of both suction and discharge operations. The float switch 11 includes a chamber 17 that communicates with the pump 10 via a conduit 15-1, and a float 18 that moves up and down in the chamber 17.
And a reed switch 19 which is opened and closed by a magnet embedded in the float, and is formed so that the float 18 rises when oil flows into the chamber 17 and descends when air flows in. The operation is detected by the reed switch 19 and it is determined whether the fluid in the oil conduit 15-1 is oil or air. Flow meter 12
Is a type that can measure the flow rate in either direction of suction or discharge by the pump 10, and outputs a signal for each unit flow rate.

The solenoid valve 13 opens and closes the pipeline 15-2 that branches from the pipeline 15-1 and reaches the waste oil tank 6. The solenoid valve 14 also opens and closes a pipe 15-3 that branches from the pipe 15-1 to reach the new oil tank 7. Pipeline 15-
1 is connected to the hose 2 and communicates with the nozzle 3.
All the oil intake and discharge performed by this device is performed through this pipe line 15-1. 20 is an oil checker provided in this pipeline 15-1, which consists of a transparent container.
It is for checking the degree of pollution of the oil flowing through 15-1 with equal eyes, and is provided at one corner of a control panel 30 which will be described later.

A control panel 30 is formed above the front surface of the main body 1, and a display unit 31, an operation board 32, an alarm output unit 33, etc. are provided (see FIG. 2). The display 31 is the flow meter 12
The oil flow rate based on the flow rate signal from and the input value on the preset key 36 described later are displayed. Operation board
32 includes operation keys 35-1 to 5 and preset keys 36-1 to 36
・ Reset key 37-1 and 2 and operation indicator lamp 38-1
5 are provided.

The operation keys 35-1 to 35-5 are for individually executing / stopping the work that can be performed by the device 1, and 35-1 is an "automatic" key for continuously extracting and filling oil, 35- 2 is a "drain" key for sucking old oil, 35-3 is a "fill" key for injecting new oil, 35-4 is a "refill" key for refilling the new oil tank 7 with new oil, 35-5 Is a "discharge" key for discharging the waste oil from the waste oil tank 6.

The preset keys 36-1 to 36-3 are the above operation keys 35-1 to 5
Of the work set for each key, except for "automatic", the amount of oil to be sucked or discharged in each work is preset, 36-1 is a liter key for presetting the liter volume, 36-2 is 100cc Cc to preset unit
A key 36-3 is a clear key for clearing the preset amount, and the liter key 36-1 and the cc key 36-2 are pressed a required number of times to set the preset amount. The liter key 36-1 is 0
It can be set up to 201, and it increases by 1 liter each time it is pressed, and returns to 0 when it exceeds 201. cc key 36-2 is 0
It can be set to every 0.1 liter up to 0.9 liter, and it will increase by 0.1 liter each time you press it.
Return to. The reset keys 37-1 and 37-2 are used to initialize the amounts of oil stored in the waste oil tank 6 and the new oil tank 7, respectively, and 37-1 is used to discharge the waste oil or replace the tank to empty the waste oil tank 6. Press when. Again 37-2
Press after performing the "refill" operation when the new oil tank is empty.

The display lamps 38-1 to 38-5 illuminate and indicate that each work performed by the operation keys 35-1 to 35-5 is being executed.

A control unit 40 includes the control panel 30 and the flow meter 12
-In response to the signal from the float switch 11, the pump 10, the solenoid valves 13 and 14, the indicator 31 etc. are operated according to the respective programs. Reference numeral 41 denotes a drive circuit for the pump 10, which drives the pump 10 and switches between suction and discharge. 42 is a drive circuit for the solenoid valves 13 and 14, 44 is a drive circuit for the display 31, and 45 is a drive circuit for outputting an alarm from the alarm output section 33. 46 is a microcomputer, CPU48, ROM
49. RAM 50 is provided, and signals are exchanged with the above-mentioned respective parts through the interface circuit 47.

FIGS. 4 to 8 are flowcharts showing the operation program of the above embodiment, showing each operation given by the operation keys 35-1 to 35. FIG. 4 is “automatic” work and FIG. 5 is “extraction”. The operation, FIG. 6 shows the operation of the “filling” operation, FIG. 7 shows the operation of the “replenishing” operation, and FIG. 8 shows the operation of the “discharging” operation. The specific operation of the embodiment will be described below with reference to this drawing.

Automatic work (Fig. 4); When the nozzle 3 is set in the oil gauge hole and the "automatic" key 35-1 on the control panel 30 is pressed, the automatic work is started. First, after clearing the contents of the counter C that counts the flow rate signal from the flow meter 12 and gives the flow rate,
(1), suction operation of pump 10, open solenoid valve 13, solenoid valve 1
4 is closed, the operation lamps 38-1 and 38-2 are turned on (2), and oil draining is started.

With the operation of the pump 10, the float switch 11
When it is detected that the oil has flowed into 1 (3), the counter C starts counting the flow signal from the flow meter 12, and also counts and integrates the flow signal to determine the amount of oil in the waste oil tank 6. The counting of the given counter TC ₁ is started (4), and the content of the counter C is displayed on the display 31 (5). After that, when the float switch 11 detects that the oil has finished draining and air has flowed into the conduit 15-1.
(6) Stop the counting of the counter C to prevent the error amount due to the counting of the inflowing air, and after storing the contents of the counter C in the memory D ₁ (7), set a fixed time T ₁ (about 5-10
Second) and wait (8) to completely discharge the oil in the pipelines 15-1 and 15-2 into the waste oil tank 6 and stop the pump 10.
(9).

When it is detected that the quantity in the waste oil tank 6 given by the counter TC ₁ reaches a predetermined amount or more during the oil draining operation and there is a risk of the waste oil overflowing (10), the pump 10 is stopped and the alarm output unit 33 is output. A warning is output and the operation lamp 38-1 and 38-5 are blinked at the same time to prompt the discharge of waste oil (11).

Further, 1 is set to the flag F ₁ indicating that the sampling operation is in progress, and the value of the counter C is stored in the memory D _s .
(12). After this, "Eject" on the control panel 30
When the key 35-5 is pressed (13), jump to (See Fig. 8) and perform the "eject" operation.
When 37-1 is pressed (14), it is determined that the waste oil tank 6 has been replaced with an empty tank, the counter TC ₁ is cleared, the saved data D _s is returned to C, and the flag F ₁ is reset to 0. Then, (15) and the operation key 35-1 is re-operated (16) to continue the extraction operation.

When the sampling operation is completed in step (9), the counter C
Clear the contents of (17), then pump 10 discharge operation,
The solenoid valve 13 is closed, the solenoid valve 14 is opened, and the operation lamps 38-1 and 38-3 are switched to be turned on (18) to start oil filling. When it is detected that the oil has flowed into the pipe line 15-1 by the float switch 11 along with the operation of the pump 10 (19), the counter C starts the counting of the flow rate signal, and the flow rate signal is subtracted and counted to obtain a new oil. Start the counting of the counter TC ₂ which gives the remaining amount in the tank 7.
(20), of which the contents of counter C are displayed on the display 31
(twenty one).

In this way, the oil is filled, and when the filled amount C reaches the stored withdrawal amount data D ₁ (22), the pump 10
Stop, counting of the counter C is stopped, the operation display lamp is turned off, the end is notified from the alarm output unit 33 (23), and the operation is ended.

During the oil filling operation, when the remaining amount in the new oil tank 7 given by the counter TC ₂ reaches a predetermined value or less (24), the pump 10 is stopped, an alarm is output from the alarm output unit 33, and the operation is performed. Flashing the lamp 38-1 and the lamp 38-4 at the same time prompts to replenish the new oil (25). Further, 1 is set to the flag F ₂ indicating that the filling operation is in progress, and the content of the counter C is stored in the memory D _c (26). After that, when the "replenishment" key 35-4 is pressed on the control panel 30 (27), the operation jumps to (see FIG. 7) to perform the "replenishment" work, and when the reset key 37-2 is pressed.
(28), it is judged that the new oil tank 7 has been replaced with a tank filled with new fresh oil, and the counter TC ₂ is filled with the predetermined full amount a.
And restore the saved data D _c to C,
The flag F ₂ to 0 return (29) by the re-operation of the driver key 35-1 (30), more filling operation is continued.

Therefore, in this automatic operation, the old oil is taken out while being weighed, the end of the withdrawal is detected by the inflow of air into the pipe line 15-1, and the operation is automatically shifted to the new oil filling operation and taken out. It ends by filling with the same amount of new oil as the oil. Here, if the waste oil tank 6 becomes full during the extracting work or the new oil tank 7 becomes empty during the filling work, the work is temporarily stopped and the waste oil is discharged or the new oil is replenished. Then, the work can be continuously resumed from the point of interruption.

Extraction work (Fig. 5); When the nozzle 3 is set and the "extraction" key 35-2 on the control panel 30 is pressed, the extraction work is started. First, the counter C is cleared (1), and the preset amount P input by the preset keys 36-1 and 36-2 is read into the memory PS ₁ (2). At this time, if the preset amount is not set, PS ₁ is given a constant value according to the capacity of the waste oil tank 6. After this, pump 10 is inhaled,
The solenoid valve 13 is opened, the solenoid valve 14 is closed, and the operation lamp 38-2 is turned on (3) to start oil extraction.

With the operation of the pump 10, the float switch 11
When it is detected that the oil has flowed into 1 (4), the counter C starts counting the flow rate signal from the flow meter 12 and the oil amount counter TC ₁ of the waste oil tank starts counting.
(5), of which the contents of counter C are displayed on the display 31
(6). When the amount of oil, that is, C reaches the preset amount PS ₁ as the oil is withdrawn (7), or the float switch 1
When it is detected that air has flowed into the pipe 15-1 in 1
(8), the count of the counter C is stopped (9), and after waiting for the constant time T ₁ (10), the pump 10 is stopped, the end sound is output from the alarm output unit 33, and the operation lamp 35- Two
Is turned off (11) and the process ends.

When the amount in the waste oil tank 6 given by the counter TC ₁ reaches a predetermined value or more (12) during this extracting operation, the pump 10 is stopped, an alarm is output from the alarm output unit 33, and at the same time as the operation lamp 38-2. Blink 38-5 to prompt draining of waste oil (13). Further, the flag F ₁ is reset to 1 and the value of the counter C is stored in the memory D _s (1
Four). After that, when the "drain" key 35-5 on the control panel 30 is pressed (16), it is determined that the waste oil tank 6 has been replaced with an empty tank, the counter TC ₁ is cleared, and the stored data D _s is returned to C. At the same time, the flag F ₁ is reset to 0 (17), and the operation key 35-1 is re-operated (18) to continue the extracting operation.

Therefore, in this draining work, the old oil is drained,
When the sampling amount reaches the preset value or the sampling from the target part is completed, it automatically stops at any time. To interrupt the sampling operation manually, press the operation key 35-2 again. Further, if the waste oil tank becomes full during the extracting work, the work is interrupted once, and when the waste oil is discharged or the tank is replaced, the work can be restarted from the interruption point.

Filling operation (Fig. 6): When the nozzle 3 is set and the "fill" key 35-3 on the control panel 30 is pressed, the filling operation is performed.
First, the counter C is cleared (1) and the preset amount P is PS
Read to ₂ (2). At this time, if the preset amount P is not set, PS ₂ is given a constant value according to the capacity of the new oil tank 7. After that, the pump 10 is operated to discharge, the solenoid valve 13 is closed, the solenoid valve 14 is opened, the operation lamp 38-3 is turned on (3), and oil filling is started. If the float switch 11 detects that oil has flowed into the pipeline 15-1,
(4) The counter C starts counting the flow rate signal, and at the same time, the new oil tank remaining amount counter TC ₂ starts subtracting (5), and the content of the counter C is displayed on the display 31 (6). When the filling amount given by the counter C reaches the preset amount PS ₂ (7), after stopping the counting of the counter C (8), the pump
10 is stopped, the alarm output unit 33 notifies the end, the operation lamp 38-3 is turned off (9), and the operation is ended.

During the filling operation, the remaining amount of fresh oil given by the counter TC ₂ reaches a predetermined or less (10), the pump 10 is stopped, while the alarm output from the alarm output unit 33, simultaneously with the operation lamp 38-3 38- Flashing 4 prompts you to refill with new oil (11). Further, the flag F ₂ is set to 1 and the value of the counter C is stored in the memory D _c (12). After that, when the "supplement" key 35-4 on the control panel 30 is pressed (1
3), jump to (see Fig. 7) to perform replenishment work, and when the reset key 37-2 is pressed (14), it is judged that the new oil tank has been replaced with another tank filled with new oil. Then, a predetermined full amount a is given to the counter TC ₂ , the stored data D _c is returned to the counter C, the flag F ₂ is reset to 0 (15), and the operation key 35-1 is operated again ( 16), and the filling work continues.

Therefore, in this filling operation, new oil is filled, and when the filling amount reaches the preset amount, it automatically stops. To stop the filling operation manually, press the operation key 35-3 again. Here, if the new oil tank is emptied during the filling operation, the operation is temporarily interrupted, and if replenishment or tank replacement is performed, the operation can be resumed from the interruption point.

Replenishment work (Fig. 7); When the nozzle 3 or the hose 2 from which the nozzle 3 has been removed is inserted into a new oil container storing replenishment oil, and the "replenishment" key 35-4 on the control panel 30 is pressed, replenishment is performed. Work is done. First, clear counter C (1),
The preset amount P is read into the memory PS ₃ (2). At this time, if the preset amount P is not set, the full tank amount a of the new oil tank is substituted into PS ₃ . After that, the pump 10 is suctioned, the solenoid valve 13 is closed, the solenoid valve 14 is opened, the operation lamp 38-4 is turned on (3), and suction of new oil is started. When the float switch 11 detects that oil has flowed into the pipe 15-1 (4), the counter C starts counting the flow rate signal (5), and the content of the counter C is displayed on the display 31. (6). When the suction amount given by the counter C reaches the preset amount PS ₃ (7) or it is detected that the suction oil is exhausted and the air has flown into the conduit 15-1 (8), the counting of the counter C is stopped. After (9), pump 10
The alarm output unit 33 notifies the end of replenishment, the operation lamp 38-4 is turned off (10), and the filling amount C is added and set to the remaining amount counter TC ₂ of the new oil tank 7 (1
1). After this, the flag F ₂ is confirmed (12), and F = 0.
If it is F = 1, it is determined that the automatic work or the filling work is being continued, and the data D _c is returned to the counter C (13). Run key 35-1 or 35-3 (corresponding run lamp 38-
When 1 or 38-3 is blinking), it jumps to either (14), (15), or to resume the interrupted work.

Therefore, in this replenishment work, new oil is replenished to the new oil tank, and automatically stops when the replenishment amount reaches the preset amount or the replenishment oil runs out. Also, by pressing the operation key 35-4 again, it is possible to stop manually.

Discharging work (Fig. 8); When the nozzle 3 or the hose 2 from which the nozzle 3 is removed is inserted into a container for transferring waste oil, and the "discharge" key 35-5 on the control panel 30 is pressed, the discharging work is performed. Do. First, the counter C is cleared (1) and the preset amount P is read into the memory PS ₄ (2). At this time, if the preset amount P is not set, a constant value exceeding the full tank amount of the waste oil tank 6 is given to PS ₄ . Subsequently, the pump 10 is operated to discharge, the solenoid valve 13 is opened, the solenoid valve 14 is closed, and the operation lamp 38-5 is turned on (3) to start discharging the waste oil. When the float switch 11 detects that oil has flowed into the pipe line 15-1 (4), the counter C starts counting the flow rate signal (5).
Display in 1 (6). When the intake amount given by the counter C reaches the preset amount PS ₄ (7), or when it is detected that the air has flown into the flow rate 15-1 after finishing the oil discharge (8), the counting of the counter C is stopped. After that (9), the pump 10 is stopped, the alarm output unit 33 notifies the end of discharge, the operation lamp 38-5 is turned off (10), and the discharge amount C to the oil amount counter TC ₁ of the waste oil tank 6 is discharged. Subtract and set (1
1). Further after this, the flag F ₁ is confirmed (12) and F = 0.
If so, the work is terminated, and if F = 1, it is determined that the automatic work or the sampling work is being continued, and the data D _c is returned to the counter C (13), and the respective ongoing work is performed. When the corresponding operation key 35-1 or 35-2 (the corresponding operation lamp 38-1 or 383 is blinking) is pressed, (14) (1
5) Or jump to and restart the suspended work.

Therefore, in this discharging operation, the waste oil is discharged from the waste oil tank 6 and automatically stops when the discharge amount reaches the preset amount or the waste oil tank becomes empty. Also drive key 35
You can also manually stop by pressing -5 again.

[Effects of the Invention] The present invention is configured as described above, and even if the waste oil tank is full or the new oil tank is empty and the operation is interrupted during the automatic operation, the extraction amount and the filling amount are stored. Since the discharging work can be resumed from the stored amount after the supplementing work, the automatic operation can be completed without any trouble. Also,
Even during draining or replenishing work, the amount of oil to be discharged or sucked in can be set in advance to discharge or replenish only the required amount, and the minimum required amount is easily maintained even if the extraction or filling is interrupted as described above. It can be restored in a limited time.

[Brief description of drawings]

FIG. 1 is an external view of an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of the embodiment. FIG. 3 is a structural explanatory view of the embodiment. 4 to 8 are flowcharts showing the operation of the embodiment. 1 is an oil changer main body, 6 is a waste oil tank, 7 is a new oil tank, 10 is a pump, 11 is a float switch which is a sampling completion detecting means, 12 is a flow meter which is a measuring means, and 13 and 14 are electromagnetic circuits which are flow path switching means. Valves, 15-1 to 3 are oil lines, 36-1 to 3
Is a preset key which is a setting means, 40 is a control section which is a control means, TC ₁ is a counter which is a first oil amount detecting means, TC ₂
Is a counter which is a second oil amount detecting means.

Claims (3)

[Claims] 1. A waste oil pipeline having a suction / discharge pump and one end connected to a waste oil tank, and a new oil pipeline having a suction / discharge pump connected to one end with a new oil tank are provided.
In the waste oil pipeline, a suction operation of the pump is performed to extract old oil into the waste oil tank, and a discharge operation of the pump is performed to discharge old oil from the waste oil tank. In the oil changer configured to perform the filling operation for discharging the new oil from the new oil tank and the refilling operation for sucking the pump to replenish the new oil tank with the new oil, First and second oil amount detecting means for detecting the amount of oil in each oil tank, a waste oil measuring means for measuring old oil sucked and discharged in the waste oil pipeline, and a new oil discharged and sucked in new oil pipeline. A new oil measuring means for measuring oil, a means for detecting the end of extraction during extraction work, and a discharge means for discharging work, filling work and replenishment work. A means for presetting the amount of oil to be sucked in, a means for storing the value measured by each of the measuring means in the withdrawal work or the filling work, and a withdrawal work to detect the end of withdrawal and stop the same work. An automatic operation for performing a filling work in an amount corresponding to the amount to be taken out, and a control device for giving a discharge work, a filling work and a replenishing work of a preset amount by the setting means, and for giving the following a / b control: An oil changer characterized by being provided. a. When the first oil amount detecting means detects that the amount of oil in the waste oil tank has exceeded the predetermined amount before the end of the extraction is detected during the extraction work, the extraction work is stopped to enable the discharge work, and the discharge work After the above, the sampling operation is restarted from the sampling amount stored in the storage means. b. In the filling operation, if the second oil amount detecting means detects that the amount of oil in the new oil tank is below the predetermined value before the filling amount reaches the amount set by the setting means, the filling operation is stopped. Refilling work is made possible, and after the refilling work is completed, the filling work is restarted from the filling amount stored in the storage means. 2. An oil exchanging device according to claim 1, wherein a waste oil pipe line from the waste oil tank to the pump,
An oil exchanging device characterized by merging a new oil pipeline from a new oil tank to a pump, and sharing one pump between the waste oil pipeline and the new oil pipeline. 3. The oil exchanging device according to claim 2, wherein a flow meter is provided in a conduit where the waste oil conduit and the new oil conduit are joined, and the waste oil measuring means and the new oil measuring means are provided by one flow meter. An oil exchanging device, which also serves as an oil measuring means.