JPS609366Y2 - Safety device for electrostatic oil purifiers for automobiles, etc. - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a safety device for an electrostatic oil purifier mounted on an automobile or the like.

The principle of electrostatic oil purification was invented around the 1930s, and conventional electrostatic oil purification devices pass a direct current between positive and negative electrodes installed in a container containing oil. An electrostatic oil purifier (hereinafter also referred to as an electrostatic oil filter) uses an electric field to collect particulate matter contained in oil on one electrode and remove it.

) and a high voltage generator that supplies high voltage direct current electricity to this electrostatic oil purifier.

Most of the conventional electrostatic oil purifiers are used for purifying hydraulic oil, insulating oil, etc., and many of them are of the type installed and used in factories.

For this reason, conventional electrostatic oil purifiers lack consideration when used mounted on an automobile or the like.

That is, when an electrostatic oil purifier is mounted on a car or the like and used, the range of users is extremely wide, and it is not acceptable to target only a limited number of users.

In particular, since electrostatic oil purifiers use high voltage, special consideration must be given to their safety; for example, even in the event of a car crash, electrical leakage must not occur.

In view of the above, this invention aims to provide a safety device for electrostatic oil filters that can ensure the safety of occupants even in the event of an automobile collision, etc. when electrostatic oil filters are used for automobiles. This is the purpose.

First, a conventional electrostatic oil purifier will be explained.

In FIG. 1, an electrostatic oil filter 1 includes a bottomed cylindrical container 2 having a side wall 2a and a bottom portion 2b and serving as an outer electrode.
There is also an oil-tight lid on the top of this container 2,
There is a container lid 3 that is electrically connected to the container 2.

Inside the container 2, a cylindrical inner electrode 4 having a side wall 4a and a bottom portion 4b is provided concentrically with the container 2.

The inner electrode 4 has an appropriate number of small holes 5 formed in its side wall 4a.

This inner electrode 4 is insulated by the container lid 3 and the upper insulator 6, and is also insulated from the bottom part 2b of the container 2 by the lower insulator 7.

A compression spring 8 is provided between the upper surface of the lower insulator 7 and the lower surface 4b of the inner electrode 4, and pushes the inner electrode 4 toward the upper insulator 6.

The lid 3 and the upper insulator 6 have an oil inlet 9 that communicates with the inside of the inner electrode 4, and an oil outlet that communicates with the oil purification chamber A formed between the inner electrode 4 and the container 2. A suitable number of 10 are provided.

A current-carrying rod 11 is provided in the lower insulator 7 so as to penetrate the center of the round bar-shaped boss portion 7a in an oil-tight manner.

In the electrostatic oil filter 1 having the above-mentioned conventional configuration, a current-carrying rod 11 is connected to a high voltage generator 12 through a conductive wire 13, and a container 2
are connected to the high voltage generator 12 by conductive wires 14, respectively.

Further, the high voltage generator 12 is connected to a power source 15 through conductive wires 16 and 16a.

When DC electricity is supplied from the power source 15 to the high voltage generator 12, a high voltage is generated in the device 12, and a high voltage is applied between the inner electrode 4 and the outer electrode 2 of the electrostatic oil filter 1. An electric field is formed within the oil purification chamber A.

Then, automobile engine oil containing fine particles flows into the inner electrode 4 from the oil inlet 9 and flows into each small hole 5.
When the oil flows out into the oil cleaning chamber A, the negatively charged fine particles in the oil are attracted toward the side wall 2a of the container 2 and adhere to the surface of the side wall 2a.

In this way, the oil purified in the oil purification chamber A rises within the oil purification chamber A and is again supplied to the engine side from the oil outlet 10.

Next, this invention will be explained based on embodiments shown in the drawings.

In FIG. 2, the analog speedometer 17 is mounted on an instrument panel (not shown) in the interior of the vehicle.

) is attached to. The speedometer 17 has a dial plate 18 on which characters indicating the vehicle speed are displayed.
A shaft 19 is provided passing through.

A pointer 20 is attached to the end of this shaft 19.

The metal eccentric plate 21 is attached to the shaft 19 on the back side of the dial 18.
It is fixed to the shaft 19 and rotates together with the shaft 19.

A part of the circular outer periphery of the eccentric plate 21 is removed to form a cutout surface 21.
a is formed.

Metal brushes 22 and 23 are provided inside the speedometer 17, and the tips of the brushes 22 are always in contact with the center of the eccentric plate 21, and the brushes 23 are arranged so that the pointer 20 is in contact with the letters on the dial 18. When in the O position, a predetermined gap is provided between the tip 23a and the cutout surface 21a of the eccentric plate 21.

Both brushes 22, 23 are connected to a switching circuit 26 by conductors 24 and 25, respectively.

The switching circuit 26 connects the power supply 15 and the high voltage generator 12
The current between the high voltage generator 12 and the power supply 15 is turned 0N-OFF.
It is supposed to be done.

Next, the operation of this embodiment will be explained.

When the car is running at low speed, axis 1 of the speedometer 17
The rotation angle of the shaft 19 is small, and the rotation angle of the eccentric plate 21 that rotates together with the shaft 19 is also small.

That is, as shown in FIG. 2, the pointer 20 of the speedometer 17
Even if the vehicle speed is approximately 10 m, the tip 2 of the brush 23
3a is in a state apart from the notch surface 21a of the eccentric plate 21.

Therefore, the switching circuit 26 cuts off the current flowing from the power supply 15 to the high voltage generator 12, so that no current flows to the electrostatic oil filter 1, and the electrostatic oil filter 1 does not purify the engine oil.

When the speed of the automobile increases and the pointer 20 of the speedometer 17 rotates to the letter 20m on the dial 18, the eccentric plate 21 also rotates in the same direction as the pointer 20, and its notched surface 21a touches the tip 23a of the brush 23. , the switching circuit 26 is turned on, and the power source 15 and the high voltage generator 12 are connected.

Therefore, electricity flows from the high voltage generator 12 to the electrostatic oil filter 1, and the oil filter 1 starts collecting dust.

As the vehicle speed increases further, the pointer 20 and the eccentric plate 21 continue to rotate in the same direction and keep in contact with the brush 23, so that the electrostatic oil filter 1 continues to collect dust.

When the speed of the automobile slows down for some reason, such as a collision, the pointer 20 changes to 0kWt on the dial 18.
The eccentric plate 21 also rotates in the same direction.

And the vehicle speed is 20kr! When it becomes 1 or less, the eccentric plate 21
Since contact with the brush 23 is eliminated, the switching circuit 26 is turned off, and the high voltage generator 1 is disconnected from the power source 15.
Cut off the flow of electricity to 2.

FIG. 3 shows another embodiment of a safety device for turning the switching circuit 26 ON-OFF.

In this figure, the speedometer 17A has a phototube light emitting section 27 provided outside the dial 18, a light receiving section 28 provided on the back of the dial 18, and connected to a switching circuit 26 by a power source 30.31. ing.

The eccentric plate 29 is fixed to the shaft 19 of the speedometer 17A,
Like the eccentric plate 21 of the first embodiment, it is located on the back side of the dial 18.

This eccentric plate 29 is provided with a protrusion 29a that blocks the light rays emitted from the light emitting section 27 of the phototube in a low vehicle speed range.

Further, a hole 18a is formed in the dial 18 to allow the light beam emitted from the light emitting section 27 to pass therethrough.

When the speed of the automobile is low, the light emitted from the light emitting section 27 is blocked by the protrusion 29a of the eccentric plate 29, so no current flows to the switching circuit 26 and the electrostatic oil filter 1
doesn't work.

When the speed of the car increases and the pointer 20 rotates to 20 km, the protrusion 29a rises and no longer blocks the light emitted from the light emitting part 27, so the light reaches the light receiving plate 28 and is received by the switching circuit 26. Electric current flows and the electrostatic oil filter 1 is activated.

That is, the operation of this embodiment is similar to that of the first embodiment.

In the above example, the set speed of the car is set to 20 hours.
t/H, and explained that the electrostatic oil filter 1 operates when the speed exceeds this speed, but if this set speed is 20b/H
Of course, it is not limited to.

As mentioned above, this invention connects the high voltage generator to the power supply when the speed of the car exceeds a set value for an electrostatic oil purifier for automobiles that has an electrostatic oil purifier and a high voltage generator. However, by installing a speedometer that has a function of disconnecting the high voltage generator from the power source when the speed falls below a set value, the safety device is constructed, and the following effects can be obtained.

(1) Even if the electrical system is damaged in the event of a car collision and a current leakage occurs, the vehicle speed is already below the set value, so power is not supplied from the high-voltage generator and it is safe. .

(2) When the car is stopped for repairs, etc., electric shock accidents can be prevented because electricity from the high voltage generator is not flowing.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a conventional electrostatic oil purifier having an electrostatic oil purifier (vertical section), Figs. 2 and 3 show an embodiment of this invention, and Fig. 2 shows the safety device section. FIG. 3 is an enlarged explanatory diagram of the electrostatic oil purifier, and FIG. 3 is a perspective view showing another embodiment of the safety device section in FIG. 2. 1... Electrostatic oil filter, 2... Container, 4... Inner electrode, 12... High voltage generator, 15... Power supply, 17, 17A...
...Speedometer, 20...Pointer, 21...
・Eccentric plate, 22, 23...Brush, 26...
... Switching circuit, 27 ... Light emitting section, 2
8... Light receiving section, 29... Eccentric plate.

Claims (1)

[Scope of utility model registration request] Electrostatic purifier that creates an electric field in the oil by passing a direct current between positive and negative electrodes installed in a container containing oil, etc., and collects the particulate matter contained in the oil to one electrode and removes it. The electrostatic oil purifier is composed of an oil dispenser and a high voltage generator that supplies high-voltage direct current to the electrostatic oil purifier. A safety device comprising a speedometer that energizes the power source and the high voltage generator when the speed is higher than a set value, and cuts off the current flowing from the power source to the high voltage generator when the speed falls below the set value.