JPH05340527A - Fuel supply mechanism - Google Patents

Abstract

PURPOSE:To prevent the leakage of fuel oil when its drain cock is left open through carelessness by a method wherein a tube member is provided with a base part connected to an outlet opening of a drain cock and an end part freely movable higher or lower than the oil surface maintained at a predetermined level. CONSTITUTION:The base part 15a of a tube member 15 is connected to an outlet opening 14c of a drain cock 14 and, by a retaining member 16 fixed to the upper part of an oil tank 11, an end part 15b of the tube member 15 is detachably retained higher than a level of the oil surface L maintained by an oil leveler 13. To drain the oil in the oil tank 11, the end part 15b of the tube member 15 is detached from the retaining member 16, its end part is positioned lower than a predetermined level of the oil surface L in the oil tank maintained by the oil leveler and the drain cock is opened. Even if one forgets to close the drain cock, therefore, this mechanism allows the oil in the oil tank to rise only to an intermediate point of the tube member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply mechanism,
More specifically, it relates to a fuel supply mechanism most suitable for a forced air supply / exhaust type warm air heater.

[0002]

2. Description of the Related Art A forced air supply / exhaust type hot air heater commonly referred to as an FF type stove uses a wall or a window to expose the air supply and exhaust ports of the air supply / exhaust pipe to the outside. Combustion air is forcibly supplied to the combustion chamber, which is hermetically sealed to the room through the air supply pipe, and the fuel gas blown out from the nozzle of the gasification burner incorporated in the combustion chamber and the above The air-fuel mixture and the combustion air are burned, and the combustion waste gas is discharged to the outside through the exhaust port.

To obtain the fuel gas, a fuel supply mechanism is connected to the combustion chamber of the gasification burner. The fuel supply mechanism includes an oil tank for storing fuel oil, an oil pump housed in the oil tank for pumping the fuel oil, and the like, and vaporizes the fuel oil pumped by the oil pump to the fuel chamber. I am trying to supply. The oil tank is connected to a drain cock for draining the fuel oil stored therein when performing maintenance work, and an oil leveler for keeping the stored fuel oil constant. When performing maintenance work, the drain cock is opened and the oil in the oil tank is drained in advance.

[0004]

As described above, it is often the case that humans forget to close the drain cock after draining the oil in the oil tank during maintenance work, and the fuel oil supplied to the oil tank after the work Had the problem of leaking from the drain cock.

The present invention has been made in view of the above problems, and an object thereof is to provide a fuel supply mechanism capable of preventing leakage of fuel oil due to forgetting to close the drain cock.

[0006]

In order to achieve the above object, the present invention has an oil tank having a drain cock for storing fuel oil, and an oil leveler for maintaining a constant oil level of the stored fuel oil. And a pipe member having a base end portion connected to the drain port of the drain cock, and a tip end portion displaceable above and below a constant oil level. The feature is that it is provided.

Further, the pipe member may have a visual part for visually observing the oil surface inside.

[0008]

According to the fuel supply mechanism having the above structure, when the oil in the oil tank is drained at the time of maintenance, the tip of the pipe member is located below the oil level which is constantly maintained by the oil leveler. By displacing and opening the drain cock, the oil in the oil tank can be drained. Also, if the tip of the pipe member is placed above the oil level of the oil tank, even if you forget to close the drain cock during the above maintenance work,
The oil in the oil tank can be retained in the middle of the pipe member.

Further, when the pipe member has a visual portion capable of visually observing the oil surface inside, when the drain cock is forgotten to be closed during the maintenance work, the pipe member reaches the middle portion of the pipe member. You can see the oil that is present.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing a main part of a fuel supply mechanism in one embodiment of the present invention. Referring to the figure, this fuel supply mechanism includes an oil tank 11 for storing fuel oil. Oil tank 11
An oil pump 12 is disposed inside the oil pump so that the oil pumped up by the oil pump 12 is diffused and supplied to a vaporization section (not shown).

An oil leveler 13 is connected to the oil tank 11 via a pipe P. The oil leveler 13 includes a float mechanism 13a that sets the oil level, a valve mechanism 13b that is opened and closed by the float mechanism 13a, and the like, and maintains the oil level L of the fuel oil stored in the oil tank 11 constant. It is a conventional product for. With the above-described configuration, the oil tank 11 of this embodiment includes the drain cock 14 for draining the oil inside.
Are connected.

Referring to FIG. 2, this drain cock 14
Includes a main body 14a having a substantially hexagonal cross section, a spindle 14b screwed to the main body 14a, and a discharge port 14c opened and closed by the spindle 14b. By projecting the head b1 of the spindle 14b from the main body 14a to the open state, the inside of the oil tank 11 is opened to the outside and the oil in the oil tank 11 is drained.

Here, in this embodiment, the drain port 14c of the drain cock 14 is connected to the base end portion 15a of the pipe member 15 formed of transparent rubber, as shown in FIG. A tip portion 15b of 15 is detachably held by a holding member 16 fixed to the upper portion of the oil tank 11 so as to be located above the oil level L maintained by the oil leveler 13. And the pipe member 1
Since 5 is made of transparent rubber, the entire pipe member 15 constitutes a visual part where the oil surface inside can be visually checked.

In the fuel supply mechanism having the above structure,
When draining the oil in the oil tank 11 at the time of maintenance, first, the tip portion 15b of the pipe member 15 is detached from the holding member 16 and the oil level L in the tank 11 which is constantly maintained by the oil leveler 12 is set. The oil in the oil tank 11 can be drained by displacing it downward and then opening the drain cock 14.

Further, at a normal time other than the drain time, by disposing the tip end portion 15b of the pipe member 15 above the oil level L of the oil tank 11, even if the drain cock 14 is forgotten to be closed during the maintenance work, The oil in the oil tank 11 can be retained in the middle of the pipe member 15. Therefore, according to the present embodiment, the drain cock 1
The remarkable effect that it is possible to prevent the leakage of fuel oil due to forgetting to close 4 is exhibited. Further, since the drain oil can be guided by displacing the tip end portion 15b of the pipe member 15 below the oil level L at the time of draining, the workability can be improved by discharging the drain oil in a predetermined direction. The advantage is that

Moreover, in this embodiment, the pipe member 1 is used.
Since the whole 5 constitutes a visual part capable of visually observing the oil surface inside thereof, the drain cock 1
When the user forgets to close the valve 4, the oil reaching the middle of the pipe member 15 can be visually observed, and the pipe member 15 can also act as a level gauge for detecting the forgetting to close the drain cock 14. There is also an advantage.

The above-described embodiment is only a preferred embodiment of the present invention, and various design changes are possible. For example, the elasticity of the tube member 15 itself may be utilized to normally extend the tube member 15 upward by its elasticity. In that case, the holding member 16 may be omitted.

Further, the visual observation part does not have to be constructed of the entire pipe member, and any constitution may be adopted as long as the oil surface can be visually observed. In addition, it goes without saying that various design changes can be made without departing from the spirit of the present invention.

[0019]

As described above, according to the present invention, when the drain cock is forgotten to be closed during maintenance work,
Since the oil in the oil tank can be retained in the middle of the pipe member, it is possible to prevent leakage of fuel oil due to forgetting to close the drain cock. Further, since the drain oil can be guided by displacing the tip end portion of the pipe member below the oil surface at the time of drain, it is possible to improve workability by discharging the drain oil in a predetermined direction. There are advantages.

Further, in the case where the pipe member has a visual portion capable of visually observing the oil surface inside thereof, the oil reaching the middle portion of the pipe member when the drain cock is forgotten to be closed in the maintenance work. Since it is possible to visually check, there is also an advantage that the pipe member can also act as a level gauge for detecting forgetting to close the drain cock.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a main part of a fuel supply mechanism according to an embodiment of the present invention.

FIG. 2 is a partially omitted enlarged view showing a configuration of a drain cock portion of the above embodiment.

[Explanation of symbols]

 11 Oil Tank 13 Oil Leveler 14 Drain Cock 15 Pipe Member 15a Base End 15b Tip Part L Oil Level

Claims (2)

[Claims] 1. An oil tank (11) having a drain cock (14) for storing fuel oil, and an oil leveler (13) for keeping a constant oil level (L) of the stored fuel oil. In the fuel supply mechanism, the base end (15) connected to the discharge port of the drain cock (14)
a) and a pipe member (15) having a tip (15b) displaceable above and below the oil surface (L) maintained constant.
A fuel supply mechanism characterized by being provided. 2. The fuel supply mechanism according to claim 1, wherein the pipe member (15) has a visual portion capable of visually observing an oil surface inside thereof.