JP3038173U - Air release structure of fuel oil tank - Google Patents

Abstract

(57) [Abstract] [Problem] To remove air from a fuel oil tank that is installed outdoors, such as a fuel oil stove used in homes in cold regions, without removing the cap that covers the outer circumference of the strainer, and the strainer freezes to remove air. (EN) A fuel oil tank that reliably and inexpensively delivers oil by an air bleeding structure that does not fulfill the function of. SOLUTION: A strainer 12 that is inserted into the air bleeder 10 and fixed is provided, and the strainer 12 has a circular filtering surface.
12a and a fastening surface 12b perpendicular to the filtration surface 12a.The strainer 12 is inserted into the air vent 10 from the filtration surface 12a side, and the fastening surface 12b of the strainer 12 is vented to the air vent 10a.
Fastened to the inner surface of.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fuel oil tank such as a fuel oil stove or a boiler used in homes in cold regions, and particularly to an air vent structure for a fuel oil tank installed outdoors.

[0002]

[Prior art]

 Such air bleeding of the fuel oil tank allows the air inside the tank to escape to the outside when the fuel oil is supplied from the oil supply port of the fuel oil tank, or the fuel oil is sent from the oil supply port of the fuel oil tank. This is to let the outside air into the tank when it is opened, but when venting the fuel oil tank installed outdoors, the opening to the outside of the air vent is directed downward to prevent rainwater and the like from entering the tank. The downward opening of the air vent is equipped with a wire mesh strainer to prevent sparks from entering the tank, as required by the Fire Service Act.

As shown in FIG. 8 and FIG. 9, a conventional air bleeding strainer of this type has a size substantially equal to the outer diameter of the pipe of the air bleeding 110 at the end face of the downward opening 111 of the air bleeding 110. There is a strainer 111 that is a circular wire mesh, a cap 112 that covers the outer circumference of the strainer 111 and covers the outer circumference of the pipe of the air vent 110, and a cap 112 and the outer circumference of the pipe of the air vent 110 are fixed. Are known.

[0004]

[Problems to be solved by the device]

 The air vent strainer as described above is provided on the end surface of the downward opening 111 of the air vent 110, so water droplets adhering to the outer periphery of the air vent 110 will hang down and collect near the strainer 111, causing cold weather. On the ground, the water droplets were frozen and blocked, and the fuel oil was not delivered without functioning as an air bleeder.

In addition, as long as the fuel oil tank for home use fulfills its function, it is required to be provided as cheaply as possible, and it is costly to install the cap 112 that covers the outer circumference of the strainer 111 and fix it. It was a factor.

Therefore, the present invention does not use the cap 112 that covers the outer circumference of the strainer 111, and has an air vent structure in which the strainer does not freeze and does not function as an air vent. The purpose is to provide a fuel oil tank.

[0007]

[Means for Solving the Problems]

 The air bleeding structure of the fuel oil tank of the present invention is an air bleeder 10 provided on the upper portion of the tank 1 for storing fuel oil. The air bleeder 10 is a hollow pipe for communicating the inside of the tank 1 with the outside air. The strainer 12 is inserted into the air bleeder 10 and fixed in place with the strainer 12 facing downward.The strainer 12 is formed by a circular filtration surface 12a and a vertical fastening surface 12b on the filtration surface 12a. The strainer 12 is inserted into the inside from the filter surface 12a side, and the fastening surface 12b of the strainer 12 is fastened to the inner surface of the air vent 10.

[0008]

[Embodiment of the invention]

 In the present invention, a strainer 12 which is inserted into the air vent 10 and fixed is provided, and the strainer 12 is formed by a circular filtering surface 12a and a fixing surface 12b perpendicular to the filtering surface 12a. Since the fixing surface 12b is fixed to the inner surface of the air vent 10, the strainer 12 is fixed to the air vent 10 by itself.

In addition, a strainer 12 that is inserted and fixed in the air vent 10 is provided, and the strainer 12 is formed by a circular filtration surface 12a and a vertical fastening surface 12b on the filtration surface 12a. Since the strainer 12 is inserted into the inside of the strainer 12 from the filtering surface 12a side, the filtering surface 12a of the strainer 12 is located above the downward opening 11.

[0010]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The fuel oil tank shown in FIG. 1 is installed outside a home for storing about 500 liters of kerosene. It is a substantially cubic tank 1 for storing fuel oil and is provided at both ends thereof. The four legs 2, the oil supply port 3 with a cap that can be sealed at the upper part, the oil supply port 4 at the lower part, which consists of a valve and a strainer, and the amount of fuel oil provided at the upper part It consists of a gauge 5 to measure and an air vent 10 provided above it.

The lower end of the leg 2 is fixed to the ground installed by a slab, so that the tank 1 does not fall down due to an earthquake or the like.

The oil supply port 4 is connected to a fuel oil stove or the like by an oil supply pipe, and the fuel oil is supplied by its own weight.

The air vent 10 is provided when the fuel oil is supplied from the oil supply port 3 of the tank 1 to release the air inside the tank 1 to the outside or when the fuel oil is supplied from the oil supply port 4 of the tank 1. It is for entering the outside air into the tank 1, and a hollow pipe connects the inside of the tank 1 with the outside air.

The air vent 10 is formed in an inverted U shape to prevent rainwater and the like from entering the inside of the tank, and one end of the air vent 10 is screwed and fixed to the socket 1 a provided on the upper surface of the tank 1. The other end is an opening 11 to the outside of the air vent 10, and the opening 11 faces downward.

A strainer 12 is provided which is inserted into the air vent 10 through the opening 11 and fixed thereto. The strainer 12 is for preventing sparks from entering the inside of the tank 1 through the opening 11, and is provided with a large number of small holes so as not to prevent communication between the inside of the tank 1 and the outside air.

As shown in FIGS. 5 to 7, the strainer 12 is shaped like a circular table, and has a circular filtering surface 12a and a pair of downward fixing surfaces 12b perpendicular to the filtering surface 12a. The strainer 12 is formed, and the outer diameter of the strainer 12 is the same as the inner diameter of the pipe of the air vent 10. The strainer 12 is formed by forming a stainless steel wire mesh into a circular table shape, has elasticity as a whole, and absorbs some dimensional error and is inserted into the air bleeder 10.

As shown in FIG. 4, the strainer 12 is inserted into the air vent 10 from the filtering surface 12 a side of the strainer 12, and the fastening surface 12 b of the strainer 12 is fastened to the inner surface of the air vent 10. The method of fastening is generally spot welding, but it is also possible to use adhesives or screws.

Since the strainer 12 that is inserted and fixed is fixed to the air bleeder 10 by itself, there is no need for a cap to stop it, and the cost can be reduced.

Further, the filtering surface 12a of the strainer 12 is located above the downward opening 11, and even if water droplets adhering to the outer periphery of the air vent 10 hang down and collect near the opening 11, they do not reach the filtering surface 12a of the strainer 12. Even if the water drops freeze, the air vent 10 is not blocked and the oil is reliably sent.

In the above embodiments, the strainer 12 was formed by forming a wire mesh into a circular table shape. However, when the provisions of the Fire Service Act are not applied, a thin iron plate with a large number of small holes or a synthetic steel plate is used. It may be molded of resin.

Further, although an example in which the pair of fastening surfaces 12b is fastened to the strainer 12 is shown, the fastening surfaces 12b may be integrally formed in a ring shape, or a plurality thereof may be provided.

[0023]

[Effect of the invention]

 According to the present invention, a strainer that is inserted into the air vent and fixed is provided, and the strainer is formed by a circular filtering surface and a fixing surface that is perpendicular to the filtering surface. Since the strainer is fixed to the inner surface and is fixed to the air bleeder only by the strainer, there is no need for a cap to stop it, and the cost can be reduced.

Further, a strainer that is inserted into the air vent and fixed is provided, and the strainer is formed by a circular filtration surface and a fastening surface that is perpendicular to the filtration surface, and the strainer is filtered inside the air vent. Inserted from the surface side, the filtration surface of the strainer is above the downward opening, so even if water droplets adhering to the outer periphery of the air vent hang down and collect near the opening, they do not reach the filtration surface of the strainer. Even if it freezes, it does not block the air vent, and the oil is reliably sent.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an air vent structure of a fuel oil tank.

FIG. 2 is a side view thereof.

FIG. 3 is a partially enlarged view showing a main part of FIG. 1;

FIG. 4 is a partially enlarged sectional view of FIG. 3;

FIG. 5 is a sectional view of a strainer.

FIG. 6 is a bottom view of FIG.

FIG. 7 is a perspective view of FIG.

FIG. 8 is a diagram showing a conventional example of FIG.

9 is a partially enlarged sectional view of FIG.

[Description of sign]

 1 Tank 10 Air vent 11 Opening 12 Strainer 12a Filtering surface 12b Fastening surface

Claims (1)

[Utility model registration claims] 1. An air vent provided in an upper portion of a tank for storing fuel oil, wherein the air vent is a hollow pipe that communicates the inside of the tank with the outside air so that its opening faces downward and is inserted into the air vent. Wear a strainer to wear,
The strainer is composed of a circular filtration surface and a retaining surface that is perpendicular to the filtration surface.The strainer is inserted from the filtration surface side of the strainer into the air vent, and the retaining surface of the strainer is attached to the inner surface of the air vent. Air bleeding structure for the tank.