JPH1137452A - Cartridge tank for fuel supply - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cartridge tank which enables an automatic oil supply in safety by supplying oil from above without inverting a cartridge tank and prevents an unlimited oil discharge even when an air leakage occurs. SOLUTION: In a tank 1, an injection passage 6 which extends vertically downwardly from an injection opening portion 5 to a discharge opening portion 4 is provided. A communicating portion 7 which communicates with the tank 1 is provided in the vicinity of the discharge opening portion 4 of this injection passage 6. Above this communicating portion 7, the injection portion 6 is constructed such that it is separated from the tank 1 and therefore is not communicated with the tank 1 and an exhaust passage 8 which makes the upper portion of the inside of the tank 1 and the outside of the tank 1 communicate with each other by ventilation is disposed. Below an inside ventilation communicating portion 9 which is communicated with the upper portion of the inside of the tank 1, the exhaust passage 8 is constructed such it is separated from the tank 1 and therefore is not communicated with the tank 1. The exhaust passage portion 8 is constructed such that an outer ventilation communicating portion 10 which communicates with the tank 1 by ventilation is positioned at a level lower than the vicinity of the bottom of the tank 1 or the bottom of the tank 1 at least.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply cartridge tank for storing kerosene such as an oil heater or an oil fan heater.

[0002]

2. Description of the Related Art In a cartridge tank which is generally used at present, a discharge protruding portion is provided so as to protrude from a bottom portion of the tank, and a discharge protruding portion which is slightly suspended from the entire bottom surface of the tank is provided. An inlet is provided at the bottom, a cap-shaped plug is screwed onto the inlet, and a discharge unit closed via a valve body is provided at the plug, and a foldable handle for the handle is provided at the top of the tank. The handle is provided.

Therefore, the tank is carried by holding the handle, and the tank is installed upside down in a refueling station, and the obstruction plug is turned by hand to remove it. Put kerosene into the tank.

[0004] When the insertion is completed, the obstruction plug is screwed again, turned over again, carried with the handle, and the tank is inserted and fitted into a cartridge insertion fitting portion provided on a heating device main body such as an oil stove or an oil fan heater. .

[0005] By this insertion fitting, the discharge protruding portion at the lower portion of the tank is positioned and set at a predetermined position of the oil receiving portion. For example, a pin provided on the oil receiving portion is provided at the bottom of the discharge protruding portion. And pushes the valve body upward to hold the discharge portion in an open state.

Therefore, if the oil is not stored in the oil receiving portion, the oil is discharged from the discharging portion to the oil receiving portion.

[0007] This oil is not discharged unlimitedly, but a space is formed in the upper part of the tank by the amount of the discharged oil, and since this space is isolated from the outside, a vacuum for lifting the oil in the tank is raised. Since the suction force is applied, the discharge of the oil in the tank is stopped in a state where the oil receiving portion is filled up to a predetermined height (generally, until the discharge portion is submerged).

In this state, when the oil in the oil receiving portion is used by the combustion of the heating device or is pumped up by the pump according to the use and the oil level of the oil receiving portion is lowered, the discharge portion will be exposed. In this case, air enters the tank from the discharge portion, and the oil in the tank is discharged to the oil receiving portion as much as necessary. That is, a so-called automatic replenishment function is exhibited, and the oil is automatically supplied to the oil receiving portion by automatically discharging an amount consumed at any time according to use.

Such a cartridge tank can be removed from the heating device main body and carried, so that it does not directly refuel the heating device main body, but can be refueled away from the heating place. This has various advantages such as storability when not in use and weight reduction of the main body itself.

However, as described above, the current cartridge tank needs to be inverted and refueled, or refueled and then turned over again and inserted into the main body.

[0011] Therefore, for example, if the tank has a capacity of 7 liters, it will be about 8 kg, and reversing this is a very difficult task, especially for a weak woman and the elderly. Refueling work was avoided because of the hard work.

Further, as described above, the plug which is manually removed at the time of refueling is always in contact with the oil in the oil receiving portion and is wet with the oil, so that the oil sticks to the hand during refueling. This was another major factor in avoiding refueling work.

On the other hand, in order to avoid these problems, in order to eliminate the need for an inversion operation, an inlet is easily provided at the top of the tank, and oil is supplied from this inlet. If the cap is forgotten to be tightened or loosened, or if the inside and outside of the tank can be vented due to deterioration of the packing or the like, the above-mentioned automatic replenishment function is fundamentally broken. That is, outside air enters into the upper space, which is supposed to be isolated at the top of the tank, and the above-mentioned vacuum (reduced pressure) suction force is lost, and the oil is discharged from the bottom discharge portion without limitation by its own weight. Therefore, it cannot be put to practical use.

Therefore, under the present circumstances, it is not possible to easily provide an inlet at the upper portion of the tank in this way, and it is inevitable to use the inverted operation method as described above.

[0015] The applicant has studied and overcome the above problems, and the present invention has solved the problems. The present invention can solve the above problems, and can also maintain the automatic replenishment function safely. A tank is provided.

[0016]

The gist of the present invention will be described with reference to the accompanying drawings.

In an oil supply cartridge tank provided with a discharge section 4 at the bottom of the tank 1, an injection port 5 is provided at an upper portion of the tank 1, and an injection path section in which the upper portion communicates with the injection port 5 in the tank 1. 6 is disposed in a hanging state, and an exhaust path section 8 in which the upper part communicates with the upper part in the tank 1 and the lower part communicates with the outside of the tank 1 in the hanging state is arranged in the hanging state. The present invention relates to a refueling cartridge tank which is configured to be able to refuel from an inlet portion 5 at an upper part of the fuel tank.

Further, a discharge unit 4 having a valve mechanism 2 for discharging the oil 3 in the tank 1 until the liquid is submerged at the bottom of the tank 1 is provided, and an inlet 5 is provided at an upper portion of the tank 1. An injection path portion 6 is provided in the inside of the tank 1 so as to hang from the injection port portion 5 toward the discharge port portion 4, and communicates with the inside of the tank 1 at a lower end portion of the injection path portion 6 close to the discharge port portion 4. In addition to providing the communication portion 7, the injection path portion 6 is formed above the communication portion 7 in an isolated state that cannot communicate with the inside of the tank 1, and the upper part inside the tank 1 and the outside of the tank 1 are ventilated. An exhaust path portion that communicates with the upper portion of the tank, and an exhaust path portion below the internal ventilation communication portion that communicates with the upper portion of the tank so that the exhaust path portion cannot communicate with the tank; External ventilation communication that communicates with the outside of tank 1 10 is according to the oil supply cartridge tank according to claim 1, characterized by being configured the exhaust path portion 8 to be located at least near the bottom of the tank 1.

Further, a discharge protruding portion 11 is suspended from the bottom of the tank 1 so as to protrude, and the valve mechanism 2 is mounted on the bottom of the discharge protruding portion 11 which is slightly suspended from the entire bottom surface 1A of the tank 1. An oil receiving portion for storing an oil 3 provided with a discharge portion 4 provided
A discharge projection 11 at the bottom of the tank 1 is arranged on the tank 12 so that the discharge section 4 can be arranged below the oil level 13 of the oil receiving section 12. The communicating portion 7 communicating with the inside of the tank 1 is provided on the entire bottom surface 1 of the tank 1.
A, which is disposed at a position slightly lower than A and slightly higher than the discharge part 4 at the bottom of the discharge protruding part 11, and the external ventilation communication part 10 provided at the lower end of the exhaust path part 8 is at least the entire tank 1. The exhaust path section (8) is configured to be at a height position lower than the bottom surface (1A).
The fuel supply cartridge tank according to any one of the above.

The injection path 6 is formed in a pipe shape, and the upper end of the injection path 6 is connected to the injection port 5 provided in the upper part of the tank 1. The lower end of the injection path 6 is disposed in the vicinity of the discharge section 4 provided at the bottom of the tank 1, and the communication section 7 is connected to the lower end of the injection path section 6.
The fuel supply cartridge tank according to any one of claims 1 to 3, wherein the injection path section 6 is configured to be in an isolated state that cannot communicate with the inside of the tank 1 except for the communication section 7. It is related.

The exhaust path 8 is formed in a pipe shape, and the lower end of the exhaust path 8 is made to penetrate through the entire bottom surface 1A of the tank 1 or is disposed in the discharge projection 11. The exhaust path section 8 is configured such that the external ventilation communication section 10 provided at the lower end of the exhaust path section 8 is at the same height position as the communication section 7 at the lower end of the injection path section 6. A fuel supply cartridge tank according to any one of claims 1 to 4, characterized in that:

Further, a portion having a height difference is provided in the upper portion of the tank 1, the inlet 5 is provided in a lower portion of the upper portion of the tank 1, and the vent path 8 communicates with the upper portion of the tank 1. The internal ventilation communication part 9 is configured to be located below the high part of the upper part of the tank 1, and the internal ventilation communication part 9 is configured to be higher than the injection port 5. The fuel supply cartridge tank according to any one of claims 1 to 5, wherein

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

At the time of filling (at the refueling station), as shown in FIG.
(Kerosene).

The oil 3 flows into the tank 1 from the communication part 7 at the lower end through the injection path part 6.

The air in the tank 1 is exhausted to the outside of the tank 1 from the exhaust path 8 as the oil 3 flows.

The oil 3 can be supplied into the tank 1 by exhausting the air inside the tank 1 from the exhaust passage 8 in this manner.

As shown in FIG. 1, it is possible to insert and set the heater 1 into the heating device main body 15 in the same posture without reversing the fuel and turning over after refueling as in the prior art. , Oil can be supplied from the upper injection port 5. Therefore, the refueling operation is easier than in the conventional example, and since the plug wet with oil is not turned by hand as in the conventional example, the hands are hardly stained, and the refueling operation is hardly avoided.

A valve mechanism 2 is provided at the bottom of the tank 1 as in the prior art.
Is provided, the automatic replenishment function as in the related art is performed.

That is, the oil 3 in the tank 1 is discharged from the discharge part 4 to the oil receiving part 12 until the discharge part 4 is submerged on the oil surface 13 of the oil receiving part 12. When the oil level 13 reaches a predetermined height (generally, when the discharge part 4 is submerged), a vacuum (decompression) suction force is generated because the space formed in the upper part of the tank 1 is isolated from the outside, The discharge of the oil 3 from the discharge unit 4 automatically stops.

When the oil level 13 is lowered due to the burning and consumption of the oil 3 by the heating device main body 15, the discharge section 4 is to be exposed, as shown in FIG. 5, air flows through the discharge section 4 (or the exhaust path section 8). The oil 3 is discharged at the same time as it enters the tank 1), and is automatically replenished.

On the other hand, the injection port 5 is closed by an obturator plug 14 or the like. If the obturator plug 14 is loosened and becomes capable of ventilating, in the present invention, as shown in FIG. The oil 3 in the passage 6 flows out into the tank 1 via the communication part 7 and is further discharged from the discharge part 4 to the oil receiving part 12. Then, as shown in FIG. 7, the oil 3 is discharged from the discharge portion 4 while the external air enters the tank 1 as bubbles 16 via the communication portion 7 of the injection path portion 6.

However, the discharge of the oil 3 in the tank 1 or the discharge of the oil 3 due to the bubbled inflow of the external air into the tank 1 causes the oil level 13 in the oil receiving portion 12 as shown in FIG. At the same height as the communication portion 7 at the lower end of the injection path portion 6, the inflow of external air from the communication portion 7 into bubbles stops, and the discharge of the oil 3 automatically stops.

Further, as in a second embodiment to be described later, an oil receiving portion is provided.
If the oil level 13 of 12 is higher than the communication portion 7, the communication portion 7
No oil 3 is discharged due to the inflow of bubbles from the oil.

Therefore, even if the injection port 5 is opened or the air-tight leak occurs, the oil 3 in the injection path 6 is discharged. If the oil level 13 in the oil receiving portion 12 becomes the same height as the communication portion 7 (or if it is higher than this), the vacuum (reduced pressure) suction force by the upper space in the tank 1 still works, The discharge of the oil 3 is automatically stopped (no discharge occurs), and the oil 3 is unlimited.
Is not ejected. The automatic replenishment function is maintained as it is.

Therefore, it is desirable to reduce the internal capacity of the injection path 6 so that as much oil 3 as possible is not discharged even if the upper inlet 5 is forcibly tightened or leaks tightly. The oil level 13 of the oil receiving section 12 rises to the same height as the communication section 7 when the oil 3 in the passage section 6 is discharged, and the oil 3 other than in the injection path section 6 is designed not to be discharged.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 7, a discharge projection 11 is provided so as to protrude from the bottom of the tank 1 as in the conventional configuration, and is located at a position slightly lower than the entire bottom surface 1A of the tank 1. A discharge unit 4 having a valve mechanism 2 is provided at the bottom of the discharge protrusion 11, and a discharge protrusion 11 at the bottom of the tank 1 is disposed at an oil receiving unit 12 for storing the oil 3. Are arranged below the oil level 13 of the oil receiving portion 12.

That is, when the tank 1 is carried, the discharge section 4 is held in a closed state by the valve mechanism 2,
The oil 3 does not leak from the discharge section 4 at the bottom,
When set in the heating device main body 15, for example, the pin of the oil receiving portion 12
The valve body of the valve mechanism 2 is pushed up against the spring by 17, and the valve mechanism 2 is released and held in an open state.

Although not shown, the discharge section 4 may be provided at the bottom of a conventional stopper plug which is screwed.

In this embodiment, an injection port 5 which is opened and closed by a screw-type stopper 14 is provided above the tank 1.

Further, an injection path 6 is provided in the tank 1 so as to hang from the injection port 5 toward the discharge port 4, and a lower end portion of the injection path 6 adjacent to the discharge port 4. A communication part 7 communicating with the inside of the tank 1
Above the communication part 7, the injection path part 6 is configured in an isolated state that cannot communicate with the inside of the tank 1.

In this embodiment, the injection path 6 is formed in a pipe shape, and the upper end of the injection path 6 is connected to the injection port 5 provided in the upper part of the tank 1. The lower end of the injection path section 6 is disposed close to the discharge section 4 provided at the bottom of the tank 1, and the communication section 7 is provided at the lower end of the injection path section 6, and the injection path section 6 is connected to the communication section. 7
Other than that, it is configured to be in an isolated state that cannot communicate with the inside of the tank 1.

That is, in the present embodiment, the injection path section 6 is disposed within the discharge projection 11 at the bottom, and has a length that does not reach the discharge section 4 at the bottom. The communication portion 7 is configured. In addition, for example, the injection path 6 may have a length reaching the discharge section 4, and a communication hole may be formed at a lower end portion of the injection path 6, and the communication hole may be used as the communication section 7.

As described above, in this embodiment, since the communication portion 7 can be located at a position lower than the entire bottom surface 1A of the tank 1, the height of the oil level can be increased even with the existing oil receiving portion 12. 7 so that the structure which can exhibit the function and effect of the present invention can be easily designed.

Further, in this embodiment, the exhaust path portion 8 which communicates the upper portion inside the tank 1 with the outside of the tank 1 by ventilation is provided.
Below the internal ventilation communication portion 9 that communicates with the upper portion inside the tank 1, the exhaust passage portion 8 is configured in an isolated state that cannot communicate with the inside of the tank 1, and communicates with the outside of the tank 1. The external ventilation communication part 10 constitutes the exhaust path part 8 at a position slightly lower than the entire bottom surface 1A of the tank 1.

Specifically, in the present embodiment, the external ventilation communication portion 10 provided at the lower end of the exhaust passage portion 8 is positioned at a height lower than the communication portion 7 at the lower end of the injection passage portion 6. The exhaust path section 8 is configured as follows.

More specifically, in the present embodiment, the exhaust path 8 is formed in a pipe shape, and the lower end of the exhaust path 8 is disposed in the discharge projection 11 of the tank 1. The external ventilation communication section 10 provided at the lower end of the exhaust path section 8
Is located at a position lower than the communicating portion 7 at the lower end of the injection path portion 6, and the exhaust path portion 8 is configured to be located on the bottom surface of the discharge projecting portion 11 similarly to the discharge portion 4.

Therefore, in the present embodiment, the exhaust path 8
The lower end of the discharge protrusion 11 does not protrude to the outside.
Since it is provided at the same height position as the lowermost discharge section 4 through the inside, it is invisible from the outside and has a good appearance.
Since the external ventilation communication part 10 is also submerged when the discharge part 4 is submerged, even if the external ventilation communication part 10 is provided, there is no problem in the automatic replenishment function.

Further, in this embodiment, the external ventilation communication portion
A mounting leg 18 is provided at the bottom of the discharge projection 11 so that the exhaust function is good at the time of injection shown in FIGS.

In this embodiment, a portion having a height difference is provided at the upper portion of the tank 1, the inlet 5 is provided at a lower portion of the upper portion of the tank 1, and the tank 1 of the exhaust path portion 8 is provided. An internal ventilation communication portion 9 that communicates with the upper portion is configured to be located below a high portion of the upper portion of the tank 1 so that the internal ventilation communication portion 9 is positioned higher than the inlet 5. Make up.

Therefore, as shown in FIG. 4, when the oil is fully filled, the oil 3 may overflow from the injection port 5 but may pass through the exhaust passage 8 through the exhaust passage 8 due to the excessive injection. Is reliably prevented from being discharged.

That is, if the internal ventilation communication portion 9 of the exhaust path portion 8 is located at a position lower than the height of the injection port portion 5, the oil 3 should not be filled in the tank 1 at a height higher than the height of the internal ventilation communication portion 9. Unnecessary display and warning means must be taken, and if it is accidentally inserted too much, it will be discharged from the external ventilation communication part 10 at the bottom, but in this embodiment, it is poured until it is discharged from the internal ventilation communication part 9. As a result, since the water does not overflow from the inlet 5, it is possible to prevent the water from being erroneously inserted and continuously discharged from the lower external ventilation communication part 10 without knowing.

In the second embodiment shown in FIG. 8, the lower end of the exhaust passage 8 penetrates downward from the entire bottom 1A of the tank 1 and is juxtaposed with the discharge projection 11 so that the oil receiving section 12 This is an embodiment in which the oil communication surface 10 reaches the oil surface 13 and the ventilation communication part 10 with the outside air provided at the lower end of the penetrating hanging part is set at a position slightly higher than the communication part 7 of the injection path part 6.

In this case, unlike the above-described embodiment, in the automatic replenishment function, the outside air enters from the discharge part 4 so that the oil is not replenished and discharged, and the reference oil level 13 is not the height of the discharge part 4 but the external oil level. It is the height of the ventilation communication part 10.

That is, since the exhaust passage 8 communicates with the inside of the tank 1, the external passage 10 at the lower end of the exhaust passage 8 is submerged.
From outside, the outside air enters the upper space in the tank 1 and the oil 3 is discharged from the discharge unit 4. Then, the oil receiving section is connected to the external ventilation communication section 10.
When the oil level 13 of 12 has reached, the outside air cannot enter any more and the above-mentioned reduced pressure suction force is generated and the discharge of the oil 3 is stopped. Therefore, when the oil level 13 is lowered, the oil 3 is discharged from the discharge part 4 until the external ventilation communication part 10 is closed.

Therefore, in the second embodiment shown in FIG. 8, the oil level of the oil receiving portion 12 is already in use.
13 is maintained at a position higher than the communication portion 7 at the lower end of the injection path portion 6.

Therefore, in the event that the airtightness leaks and external air is introduced from the injection port 5 in this state, the oil 3 in the injection path 6 is discharged, but as in the first embodiment described above, the oil 3 is discharged. Even after the discharge of the oil 3 in the section 6, the oil 3 in the tank 1 is not discharged due to the further inflow of bubbles. Therefore, in the second embodiment, the content of the injection path 6 is (tank 1
If the injection port 5 is widened so that the oil can be easily supplied to the oil), it can be made thinner and smaller, and the oil 3 can be set so as to be hardly discharged even if such an airtight leak occurs.

As described above, in the case of such a configuration as in the first and second embodiments, the operation is specifically as follows.

At the time of injection (at the refueling station), the plug 14 is removed from the state shown in FIG.
As shown in FIG. 1, oil 3 (kerosene) is supplied from an opening 5 at the top of the tank 1 via a pump or the like.

The oil 3 flows into the tank 1 from the communication portion 7 at the lower end through the injection path 6.

The air in the tank 1 is exhausted to the outside of the tank 1 from the exhaust path 8 as the oil 3 flows. The oil 3 can be supplied into the tank 1 by exhausting the air inside the tank 1 from the exhaust path section 8 in this manner.

Therefore, the tank 1 can be inserted and set into the heating device main body 15 in the same posture as shown in FIG. 1 without reversing the tank 1 by reversing the tank 1 or reversing it after refueling as shown in FIG. Can be refueled as it is.

On the other hand, the injection port 5 is closed by an obturator plug 14 or the like. If the obturator plug 14 is loosened and becomes capable of ventilating, in the first embodiment, as shown in FIG. The oil 3 in the injection path section 6 flows out into the tank 1 through the communication section 7 and is further discharged from the discharge section 4 to the oil receiving section 12. Further, as shown in FIG.
The external air becomes bubbles 16 through the communication portion 7 of the tank 1.
The oil 3 is discharged from the discharge unit 4 while entering the inside.

However, due to the discharge of the oil 3 in the tank 1 or the discharge of the oil 3 due to the bubbling of the external air into the tank 1, the oil level 13 in the oil receiving portion 12 as shown in FIG. At the same height as the communication portion 7 at the lower end of the injection path portion 6, the inflow of external air from the communication portion 7 into bubbles stops, and the discharge of the oil 3 automatically stops.

If the oil level 13 of the oil receiving portion 12 is higher than the communicating portion 7 as in the second embodiment, the oil 3 is not discharged by the inflow of bubbles from the communicating portion 7.

Therefore, even if the injection port 5 is opened or there is an airtight leak, the oil 3 in the injection path 6 is discharged, but before the oil 3 is discharged unlimitedly in a large amount. If the oil level 13 in the oil receiving section 12 is the same as the communication section 7 (or if it is higher than this), the vacuum (reduced pressure) suction force by the upper space in the tank 1 still works, 3
Is automatically stopped (no discharge occurs), and the oil 3 is not discharged indefinitely.

Therefore, it is desirable to reduce the internal capacity of the injection path 6 so that the oil 3 is not discharged as much as possible even if the upper injection port 5 is forcibly tightened or leaks tightly. The oil level 13 of the oil receiving section 12 rises to the same height as the communication section 7 when the oil 3 in the passage section 6 is discharged, and the oil 3 other than in the injection path section 6 is designed not to be discharged.

The present invention is not limited to the present embodiment, and each configuration can be appropriately designed according to various conditions such as the configuration of a heating device and an oil receiving section to which the present invention is applied.

[0070]

Since the present invention is constructed as described above, it is possible to inject and refuel the fuel from the inlet at the upper part of the tank without reversing the operation at the time of refueling. Even if the user forgets to tighten or leaks air tightly, the oil will not be discharged indefinitely, and it will be a revolutionary refueling cartridge tank that can safely maintain the automatic replenishment function as before.

According to the second aspect of the present invention, there is provided a fueling cartridge tank which is excellent in practicality and can easily realize a fueling cartridge tank capable of reliably exhibiting the above effects.

According to the third aspect of the present invention, oil can be almost completely discharged even if the injection port is opened during use as described above. Instead, it is a revolutionary refueling cartridge tank with excellent practicality that can reliably achieve the object of the present invention that can maintain the automatic replenishment function as it is.

According to the fourth and fifth aspects of the present invention, the refueling cartridge tank can exhibit the functions and effects sufficiently and can be easily realized.

According to the sixth aspect of the present invention, a more excellent refueling cartridge tank can be prevented from being erroneously injected at the time of injection and leaking out of the external ventilation communication portion of the exhaust path portion.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view in a use state of being fitted into a heating device main body of a first embodiment.

FIG. 2 is an explanatory sectional view of an empty state of the first embodiment.

FIG. 3 is an explanatory sectional view of the first embodiment at the time of injection (refueling).

FIG. 4 is an explanatory sectional view of the first embodiment when injection is completed (full refueling).

FIG. 5 is an explanatory sectional view showing an automatic replenishing function in a use state in which the heating apparatus main body of the first embodiment is fitted and inserted.

FIG. 6 is an explanatory cross-sectional view of the first embodiment when oil is discharged from the injection path when the injection port is opened.

FIG. 7 shows further oil discharge due to bubbling inflow of external air after completion of oil discharge in the injection path at the time of opening of the injection port in the first embodiment. It is explanatory sectional drawing which shows a stop time.

FIG. 8 is an explanatory cross-sectional view for explaining an operation in the second embodiment in which the external ventilation communication part of the exhaust passage part of the first embodiment is disposed at a position higher than the communication part of the injection path part and the discharge part 4. It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 1A Overall bottom 2 Valve mechanism 3 Oil 4 Discharge part 5 Inlet part 6 Injection path part 7 Communication part 8 Exhaust path part 9 Internal ventilation communication part 10 External ventilation communication part 11 Discharge projection part 12 Oil receiving part 13 Oil surface

Claims (6)

[Claims] 1. An oil supply cartridge tank having a discharge portion provided at a bottom portion of a tank, an injection port portion is provided at an upper portion of the tank, and an injection path portion having an upper portion communicating with the injection port portion in the tank is suspended. Disposed, with the upper part communicating with the upper part inside the tank and the lower part communicating with the outside of the tank, the exhaust path part is arranged in a hanging state, and oil can be supplied from the inlet part on the upper part of the tank. A cartridge tank for refueling, characterized in that: 2. A discharge unit having a valve mechanism for discharging oil in the tank until it is submerged at the bottom of the tank, an injection port is provided at an upper portion of the tank, and the injection port is provided in the tank from the injection port. An injection path portion is provided in a hanging state toward the discharge port portion, and a communication portion communicating with the inside of the tank is provided at a lower end portion of the injection path portion close to the discharge port portion. An internal ventilation passage that forms the injection path portion in an isolated state that is incommunicable with the inside of the tank, provides an exhaust path portion that communicates the upper portion inside the tank with the outside of the tank, and communicates with the upper portion inside the tank. Below the communication portion, the exhaust path portion is configured in an isolated state that cannot communicate with the inside of the tank, and the external ventilation communication portion that communicates with the outside of the tank so as to be located at least near the bottom of the tank. 2. The refueling cartridge tank according to claim 1, wherein an air passage is formed. 3. A discharge protruding portion is suspended from the bottom of the tank so as to protrude, and a discharge portion having the valve mechanism is provided on a bottom of the discharge protruding portion which is slightly suspended from the bottom surface of the entire tank. A discharge protrusion at the bottom of the tank is disposed on an oil receiving portion for storing oil, and the discharge portion can be disposed below the oil level of the oil receiving portion. A communication portion provided at the lower end and communicating with the inside of the tank is disposed at a position lower than the entire bottom surface of the tank and slightly higher than the discharge portion at the bottom of the discharge protrusion, and at the lower end of the exhaust path portion 3. The exhaust path section according to claim 1, wherein the external ventilation communication section is provided at a height lower than at least the entire bottom surface of the tank.
The refilling cartridge tank described in the paragraph. 4. An injection path portion having a pipe shape, an upper end of the injection path portion being in communication with an injection port provided at an upper portion of the tank, and a lower end of the injection path portion being connected to the tank. The communication section is provided at the lower end of the injection path section, which is disposed in proximity to the discharge section provided at the bottom of the tank, and the injection path section is configured to be in an isolated state that cannot communicate with the inside of the tank except for the communication section. The refueling cartridge tank according to any one of claims 1 to 3, wherein: 5. The exhaust path section is formed in a pipe shape, and a lower end of the exhaust path section is made to penetrate from the entire bottom surface of the tank or is disposed in the discharge projection, and a lower end of the exhaust path section is provided. The exhaust path section is configured such that the external ventilation communication section provided in the section is located at the same height position as the communication section at the lower end of the injection path section.
5. The refueling cartridge tank according to any one of items 4 to 4. 6. An internal ventilation communication portion, wherein a portion having a height difference is provided in an upper portion of the tank, the injection port portion is provided in a lower portion of the upper portion of the tank, and an air communication is provided with the upper portion of the tank in the exhaust path portion. Wherein the inner ventilation communication portion is configured to be located at a position higher than the injection port portion. 2. The refueling cartridge tank according to claim 1.