JPH064207Y2 - Refueling device for cartridge tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a refueling device for a cartridge tank that refuels a cartridge tank set in a combustion device such as an oil stove.

(Prior Art) Generally, in a combustion device using oil such as an oil stove, a removable cartridge tank is used as a fuel tank. Furthermore, when supplying oil to this cartridge tank, an automatic oil supply pump device as shown in FIG. 3 may be used.

That is, the refueling pump 3 is attached to the inlet 2 of the oil tank 1, and the refueling device 6 connected to the refueling pump 3 via the refueling hose 4 and the signal line 5 is attached to the refueling port 8 of the cartridge tank 7. To do. Specifically, it is fixed with a clip portion 10 to a tank fitting 9 having a screw portion formed around the fuel filler opening 8.

FIG. 4 is a cross-sectional view showing the structure around the oil supply device 6 and the oil supply port 8 of the cartridge tank 7, and FIG. is there.

In the oil supply device 6 of FIG. 4, 11 is an oil supply pipe, and the upper end 11a of the oil supply pipe 11 is formed to have a large diameter.
The lower end 11b of the fuel supply pipe 11 is closed, and a window is formed in the outer peripheral wall near the lower end 11b.
An oil detector 12 composed of a photo sensor or the like is arranged in this window. The oil detection signal of the oil detector 12 is transmitted to the motor drive circuit of the oil supply pump 3 via the signal line 5. Further, the oil discharge port 1 is provided at an intermediate position of the oil supply pipe 11.
3 is formed. An oil supply hose 4 from the oil supply pump 3 is connected to the upper end 11 a of the oil supply pipe 11. Further, the above-mentioned clip portion 10 is attached to the upper end portion 11a of the oil supply pipe 11. Further, a cylindrical guide body 14 is attached to the upper end portion 11a so that the oil supply pipe 11 can be smoothly inserted into the oil supply port 8.

On the other hand, on the cartridge tank 7 side, the tank 15
A tank base 16 having a threaded portion 9 is fixed by caulking, and a tank base 17 is screwed and fixed to the tank base 16. Further, the fuel filler port 8 is formed in the tank money 17. An upper end of a valve guide cylinder 18 extending into the tank 15 is fixed to the fuel filler port 8. A columnar valve 19 having a diameter smaller than that of the valve guide cylinder 18 is vertically movably inserted into the valve guide cylinder 18, and the valve 19 is attached upward by a coil-shaped spring 21 attached to a spring guide 20. It is energized. An O-ring 23 is attached to the upper part of the valve 19,
When biased upward, the O-ring 23 comes into close contact with the peripheral edge of the opening 8 to maintain the oil tightness in the tank 15. Further, as shown in FIG. 5, the valve guide cylinder 18 has a discharge window 24a and a detection window 24b at positions where the discharge port 13 of the oil supply pipe 11 and the oil detector 12 face each other when the oil supply device 6 is mounted.
Has been drilled. Further, a small hole 24c having a diameter of, for example, 2 to 3 mm is formed in the upper portion of the valve guide cylinder 18.

When the oil supply device 6 is attached to the oil supply port 8 of the cartridge tank 7, the oil supply pipe 11 is inserted into the valve guide cylinder 18 through the oil supply port 8 and the clip portion 10 is attached to the screw portion 9 of the tank mouthpiece 16. 5, the valve 19 is moved downward by the lower end portion 11a of the oil supply pipe 11 as shown in FIG. The discharge port 13 and the oil detector 12 face the discharge window 24a and the detection window 24b, respectively.

When the oil supply pump 3 is started in this state, oil is supplied from the oil tank 1 into the oil supply pipe 1 of the oil supply device 6 via the oil supply hose 4. The oil supplied into the oil supply pipe 18 is discharged from the discharge port 13
And flows into the tank 15 through the discharge window 24a.

When the tank 15 is filled with oil and the oil detector 12 operates, the oil detection signal is input to the motor drive circuit of the oil supply pump 3 via the signal line 5, and the oil supply pump 3 stops.

When the oil supply pump 3 stops, the clip portion 10 is removed from the threaded portion 9 of the tank mouthpiece 16 and the entire oil supply device 6 is pulled out from the oil supply opening 8 of the cartridge tank 7. Then, the valve 19 is urged upward by the spring 21, and the valve 19
The O-ring 23 attached to the front part of the is closely contacted with the peripheral edge of the fuel filler port 8 to close the fuel filler port 8. Next, when the cartridge tank 7 is turned upside down and set on the oil stove, the valve rod having a cylindrical opening pushes the valve 19 upward from below the filler opening 8. Then, the oil flows through the gap between the valve 19 and the valve guide cylinder 18 and flows into the oil pan provided below the tank 15.

However, the cartridge tank refueling device configured as described above still has the following problems. That is, when refueling of the cartridge tank 7 is completed, a large amount of oil remains in the refueling pipe 11 and the refueling hose 4. Further, since the inner diameter of the oil supply pipe 11 is smaller than that of the oil supply hose 4, even if the oil supply device 6 is pulled up, the oil remains in the oil supply pipe 11 due to, for example, surface tension. Therefore, the oil remaining in the oil supply pipe 11 drips from the discharge port 13 during the period until the oil supply device 6 is removed and stored in a predetermined container. Therefore, there is a problem in that oil drips onto the floor on which the cartridge tank 7 is placed and the floor is contaminated.

(Problems to be solved by the invention) As described above, in the conventional cartridge tank refueling device, immediately after the refueling device is removed from the refueling port of the cartridge tank, the residual oil drips from the discharge port of the refueling pipe. There was a problem.

The present invention is a cartridge tank that can prevent the residual oil from dripping outside the cartridge tank by providing an annular shutter that selectively covers the discharge port of the oil supply pipe, thereby closing the discharge port when the cartridge is pulled out. It is an object of the present invention to provide a refueling device.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, in a refueling device for a cartridge tank according to the present invention, a tank mouthpiece formed around a refueling port of the cartridge tank is selectively engaged. The clip part to be stopped, the upper end is fixed to the clip part, and the closed lower end is formed on the outer peripheral wall of the oil supply pipe, which penetrates the oil supply port and is selectively inserted into the cartridge tank. A discharge port, an oil supply hose for supplying oil to the oil supply pipe from the outside, and an annular shutter that is externally attached to the oil supply pipe, selectively covers the discharge port through a minute gap, and has an outer diameter larger than the oil supply port. And a spring whose lower end is attached to the annular shutter and whose upper end is attached to the upper end of the oil supply pipe.The oil supply pipe is inserted into the cartridge tank and the clip part is locked to the tank base. In this state, the annular shutter is located above the refueling pipe against the repulsive force of the spring, and the clip is released from the cartridge tank by releasing the locking of the clip part to the tank mouthpiece. It is positioned at the discharge port by the repulsive force.

(Operation) According to such a cartridge tank oil supply device, an annular shutter externally provided on the oil supply pipe for supplying oil into the cartridge tank is provided, and the discharge port formed in the oil supply pipe is selectively covered by the annular shutter. I am trying. That is, when the refueling device is attached to the refueling port of the cartridge tank, the annular shutter is prevented from moving into the tank at the refueling port position of the cartridge tank.
The discharge port of the oil supply pipe is opened, and the oil supplied through the oil supply hose is supplied into the tank through the discharge port of the oil supply pipe.

On the other hand, when the oil supply device is pulled out from the cartridge tank, the annular shutter moves to the discharge port position due to the repulsive force of the spring. As a result, the discharge port is closed by the annular shutter. Therefore, even if the oil supply device is pulled out from the cartridge tank in this state, it is possible to prevent the residual oil from dropping from the discharge port.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 (a) is a sectional view showing an oil supply device for a cartridge tank of an embodiment, and FIG. 1 (b) is a sectional view showing a state where the oil supply device of the embodiment is attached to an oil supply port of a cartridge. The same parts as those in FIGS. 4 and 5 are designated by the same reference numerals, and the duplicated description will be omitted.

In the oil supply device 6 of this embodiment, an annular shutter 41 having an inner diameter slightly larger than the outer diameter of the oil supply pipe 11 is externally fitted to the oil supply pipe 11 so as to be axially movable. The length of the annular shutter 41 is set to a length that sufficiently covers the discharge port 13 formed in the oil supply pipe 11. The gap between the annular shutter 41 and the outer peripheral surface of the oil supply pipe 11 is small, and the outer diameter of the annular shutter 41 is formed larger than the diameter of the oil supply port 8 of the cartridge tank 7. Further, the lower end of the spring 42 is connected to the upper end of the annular shutter 41,
The upper end of the spring 42 is fixed to the bottom surface of an annular recess 11c formed in the upper end 11a of the oil supply pipe 11. The spring 42 is in a fully extended state in a state where the fuel supply device 6 is not attached to the fuel supply port 8 of the cartridge tank 7. In this state, the annular shutter 41 attached to the lower end of the spring 42 covers the discharge port 13. Thus, the length and spring constant of the spring 42 are set.

When the refueling device 6 configured as described above is attached to the refueling port 8 of the cartridge tank 7, the state shown in FIG. 1B is obtained. That is, when the refueling pipe 11 of the refueling device 6 is inserted into the valve guide cylinder 18 through the refueling port 8, the outer diameter of the annular shutter 41 is larger than the diameter of the refueling port 8 as described above. The shutter 41 is the valve guide cylinder 18.
You can't go inside. As a result, the annular shutter 41
Stops outside the fuel filler port 8 as shown in the drawing, and the spring 42 is housed in the annular recess 11c in a compressed state. In addition, when the fuel pipe 11 is pushed to the final position and the clip portion 10 is locked to the tank mouthpiece 16,
Due to the repulsive force of the spring 42, the oil supply pipe 11 does not move upward.

In this state, when oil is supplied from the oil supply pump 3 into the oil supply pipe 11 through the oil supply hose 4, the oil flows into the tank 15 through the discharge port 13 and the discharge window 2a.

When the tank 15 is filled with oil and the oil detector 12 operates, the oil supply pump 3 stops. Then, when the clip portion 10 is removed from the tank mouthpiece 16 and the oil supply device 6 is extracted from the oil supply port 8 of the cartridge tank 7, in the extraction process,
Due to the restoring force of the spring 42, the annular shutter 41 moves to the position of the discharge port 13 as shown in FIG. As a result, the discharge port 13 is closed by the annular shutter 41.

Therefore, even if the oil remaining in the oil supply pipe 11 or the oil supply hose 4 when the oil supply pump 3 is stopped remains due to the surface tension or the like even after the oil supply device 6 is removed, the residual oil is the remaining oil. Does not droop in a short time. Therefore, it is possible to prevent the oil from dripping before the oil supply device 6 is removed from the cartridge tank 7 and stored in the predetermined container. Then, oil drips on the surrounding floor,
The floor will not be contaminated with oil, and the generation of offensive odor due to the dropped oil will be prevented.

FIG. 2 (a) is a sectional view showing a cartridge tank refueling device according to another embodiment of the present invention, and FIG. 2 (b) shows a state in which the refueling device 6 is attached to the refueling port 8 of the cartridge tank 7. FIG.

The annular shutter 43 that is externally fitted to the oil supply pipe 11 in this embodiment is formed to have a length that simultaneously covers the discharge port 13 and the oil detector 12. Therefore, when the refueling device 6 is attached to the refueling port 8 of the cartridge tank 7, the annular recess 11c for accommodating the annular shutter 43 and the spring 42 attached to the annular shutter 43 is formed deep as shown in the drawing. ing.

When the oil supply device 6 having such a configuration is not attached to the oil supply port 8 of the cartridge tank 7, the spring 42
Of the ring shutter 43 by adjusting the length and spring constant of
Covers the discharge port 13 and the detector 12 at the same time.

When the refueling device 6 is attached to the refueling port 8 of the cartridge tank 7, the annular shutter 43 does not need to be inside the valve guide cylinder 18 as shown in FIG. It is stored in the deep annular recess 11c.

Then, in the process of withdrawing the refueling device 6 from the refueling port 8 of the cartridge tank 7, the annular shutter 43 opens the discharge port 1
Since 3 is covered, oil is prevented from dripping from the discharge port 13 in a short time after the oil is taken out. Therefore, it is possible to obtain the same effect as that of the previous embodiment.

Further, in this embodiment, the annular shutter 43 covers not only the discharge port 13 but also the oil detector 12.
Therefore, when the refueling device 6 is removed from the cartridge tank 7, the oil detector 12 outputs an oil detection signal similar to that when the oil is full, so even if the refueling device 6 is erroneously placed in the cartridge tank 7. Even if the switch of the oil supply pump 3 is turned on with the oil supply pump 3 removed, the oil supply pump 3 does not start, so that the safety of the entire automatic oil supply pump device including the oil supply pump 3 can be improved. In particular, when used in a general household, it is possible to prevent the risk of child mischief.

[Effects of the Invention] As described above, according to the present invention, the annular shutter that selectively covers the discharge port of the oil supply pipe is provided, and the discharge port is covered when the cartridge is pulled out from the cartridge tank and mounted on the cartridge tank. In the state, it is retracted upward.
Therefore, it is possible to prevent the oil from dripping outside the tank by closing the discharge port of the oil supply pipe when the oil is taken out from the cartridge tank.

[Brief description of drawings]

FIG. 1 (a) is a sectional view showing an oil supply device for a cartridge tank according to an embodiment of the present invention, and FIG. 1 (b) is a sectional view showing a state in which the device of the embodiment is mounted on a cartridge tank. (A) is a cross-sectional view showing an oil supply device for a cartridge tank according to another embodiment of the present invention, (b) is a cross-sectional view showing a state in which the device of the same embodiment is attached to the cartridge tank, and FIG. 3 is a general view. FIG. 4 is a view showing a typical automatic oil supply pump device, FIG. 4 is a sectional view showing a conventional oil supply device and an oil supply port of a cartridge tank, and FIG. 5 is a sectional view showing a state in which the same oil supply device is attached to a cartridge tank. 3 ... Refueling pump, 6 ... Refueling device, 7 ... Cartridge tank, 8 ... Refueling port, 10 ... Clip part, 11 ... Refueling pipe, 1
2 ... Oil detector, 13 ... Discharge port, 15 ... Tank, 18 ... Valve guide tube, 19 ... Valve, 41, 43 ... Annular shutter, 42 ... Spring.

Claims (1)

[Scope of utility model registration request] 1. A clip portion which is selectively locked to a tank base formed around a fueling port of a cartridge tank,
An oil supply pipe having an upper end fixed to the clip portion and a closed lower end penetrating the oil supply port and selectively inserted into the cartridge tank; a discharge port formed on an outer peripheral wall of the oil supply pipe; An oil supply hose for supplying oil from the oil supply pipe to the oil supply pipe, and an annular shutter that is externally inserted in the oil supply pipe and selectively covers the discharge port through a minute gap and has an outer diameter larger than the oil supply port. A lower end attached to the annular shutter and an upper end attached to a spring attached to an upper end of the oil supply pipe, the oil supply pipe is inserted into the cartridge tank, and the clip portion is locked to the tank base. In this state, the annular shutter is positioned above the refueling pipe against the repulsive force of the spring, and the clip portion is unlocked from the tank mouthpiece so that the refueling pipe is closed. A refueling device for a cartridge tank, wherein the annular shutter is positioned at the discharge port by the repulsive force of the spring in a state where the annular shutter is removed from the retort tank.