JPS6236035Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to, for example, an open-type hot air heater that uses petroleum as fuel, and particularly relates to a heating device in this hot air heater.

[Technical background of the invention]

Generally, this type of hot air heater that uses petroleum etc. has a filter installed in the carburetor joint of the combustor's carburetor in order to remove impurities such as tar and dust from the fuel. There is. However, since the carburetor joint is installed inside the case body on the front side, there are problems such as that it is troublesome to replace a clogged filter.

As shown in FIG. 1, this kind of hot air heater that has already been proposed has a box-shaped case body 3 on a flat base plate 1, and has a hot air outlet 2 on the front side. An oil pan 4 is provided in this case body 3.
is installed horizontally, and a refueling tank 6 is installed upside down and removably in the oil pan 4.
A refueling pump 6 is provided immersed in the combustion oil 7, and by driving the refueling pump 6, the combustion oil 7 in the oil receiving tray 4 is converted to a vaporized fuel pipe (also referred to as an oil feed pipe) 8 and a filter. The fuel oil 7 is supplied through the combustor joint 9a to the vaporizer 9 that constitutes a part of the combustor, and the fuel oil 7 is vaporized by a heater, such as a sheathed heater, buried in the vaporizer 9, and the vaporized fuel is is injected from an injection nozzle 10 connected to the carburetor 9 into the combustion burner 11 with a flow rate adjusted by a needle valve, where it flows into the combustion burner 11 while being mixed with primary air, and is injected into the combustion burner 11. By igniting with the spark plug 12,
The combustor I is mixed with secondary air and actively combusted within the combustion cylinder body 13 configured to surround the combustor I, and the combustion gas is passed through the air duct 14 to the hot air outlet 2 provided on the front side. The air is forcibly discharged by the blower 15 to heat the room.

In the hot air heater described above, the fuel oil 7 supplied to the vaporizer 9 of the combustor is supplied from the oil pan 4 to the vaporizer 9 of the combustor through the oil supply pipe 8; Some of these fuels contain bad fuels mixed with impurities such as tar and dust, and these bad fuels are removed by a fuel that is attached to the carburetor 9 of the combustor as a means of removing the tar and dust mixed therein. A filter is removably inserted into the carburetor joint 9a, and is designed to filter out impurities in the fuel oil.

[Problems with background technology]

However, since the filter incorporated in the carburetor joint 9a of the above-mentioned hot air heater is located inside the front plate (front) of the case body 3, it may become clogged. When replacing the filter, the front plate (front plate) of the case body 3 must be removed, which is an extremely troublesome task for the user. There are drawbacks such as impurities staining the area around the front side.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and it is possible to replace a clogged used filter by drilling a through hole in the side plate of the case body that also serves as a filter replacement. At the same time, the combustion air in the air supply duct is also passed through another air supply filter to remove dust, thereby preventing dust from entering the carburetor or injection nozzle. To provide a warm air heater whose purpose is to prevent.

[Summary of the idea]

The present invention provides a combustor carburetor with a carburetor joint inside the case body, an air supply duct that communicates with this combustor, and an air supply port of this air supply duct and the above-mentioned carburetor joint. A through hole that also serves as a filter replacement port is provided in the side plate of the case body, which is located close to the hot air outlet and on the side surface of the hot air outlet, and an opening/closing lid is provided in this hole, and the hole is located opposite to the air supply port. It is constructed by attaching an air supply filter to the opening/closing lid.

[Example of idea]

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

The present invention will be described with the same reference numerals assigned to the same constituent members as in the above-described specific example.

In FIGS. 2 to 5, reference numeral 1 denotes a flat base plate, and on this base plate 1, a case body 3 having a hot air outlet 2 on the front is installed.
As shown in FIG. 1, the case body 3 is provided with an oil pan 4 horizontally. In addition, an oil supply tank 5 is installed in the oil pan 4 in an inverted manner and can be attached or detached, and a fuel pump 6 is installed in the oil pan 4 so as to be immersed in fuel oil 7. Furthermore, one end of a fuel pipe 8 is connected to the lower part of the fuel pump 6, and the other end of the fuel pipe 8 is connected to a filter (not shown) connected to a carburetor 9 that forms part of a combustor. It is connected via a carburetor joint 9a containing a built-in carburetor joint.

Therefore, the fuel oil pumped by the oil supply pump 6 is supplied to the carburetor 9 through the oil supply pipe 8 and the carburetor joint 9a containing a filter.

The fuel oil that has already been purified is vaporized by a heater embedded in the vaporizer 9, and the vaporized fuel is sent to an injection nozzle 10 connected to the vaporizer 9.
The air is then injected into the combustion burner 11 by adjusting the flow rate with a needle valve, and then flows into the combustion burner 11 while mixing with primary air supplied from an air supply duct, which will be described later. By igniting the combustor at 12, it is mixed with secondary air and actively combusted in the combustion tube 13 configured to surround the combustor, and the combustion gas is passed through the air duct 14 and sent from the warm air outlet 2 to the blower 15. It is released into the room and heats the room.

On the other hand, at the lower part of the combustion tube 13, as shown in FIG.
The air supply port 16a of the air supply duct 16 is close to the carburetor joint 9a,
Moreover, it is provided close to the side plate 3a of the case body 3 located on the side surface of the hot air outlet 2. Further, in the side plate 3a of the case body 3 adjacent to the air supply port 16a of the air supply duct 16 and the carburetor joint 9a, a substantially rectangular through hole 18 which also serves as a filter exchange port is provided with a hole 18 so as to be closed. A removable opening/closing lid 19 is provided.

Further, an air supply filter 20 is attached to the opening/closing lid 19 where the air supply port 16a is located.
The air supply filter 20 is designed to pass dust contained in the combustion air and supply the filtered air to the air supply duct 16.

Therefore, when the filter in the carburetor joint 9a becomes clogged with tar or dust and is replaced, the side plate 3a of the case body 3
By removing the opening/closing lid 19 provided in the carburetor joint 9a, the filter in the carburetor joint 9a can be replaced.

On the other hand, since the air supply filter 20 attached to the opening/closing lid 19 effectively and appropriately filters out dust contained in the combustion air, the intrusion of dust into the injection nozzle 10 and the like can be significantly reduced.

[Effect of idea]

As described above, according to the present invention, in a hot air heater in which the air duct 14 is provided in the case body 1 provided with the hot air outlet 2, and the air blower 15 is provided at one end of the air duct 14, the air supply A through hole 18 which also serves as a filter exchange port is provided in the side plate 3a of the case body 3 close to the air supply port 16a of the duct 16 and the carburetor joint 9a, and an opening/closing lid 19 is provided in this through hole 18. Since the air supply filter 20 is provided on the opening/closing lid 19 facing the air port 16a,
Not only can the clogged filter in the carburetor joint 9a be replaced easily and easily, but also the combustion air to the supply air duct 16 can be purified, so it is possible to clean the combustion air to the injection nozzle 10, etc. It has excellent effects such as preventing the adhesion of dust and improving combustion efficiency.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a hot air heater that has already been proposed, Fig. 2 is a sectional view showing the main parts of the hot air heater according to the present invention, Fig. 3 is a perspective view of the same, and Fig. 4 5 is a perspective view showing the main parts of the present invention, and FIG. 5 is a perspective view of a combustor incorporated in the present invention. 3... Case body, 8... Fuel supply pipe, 10... Injection nozzle, 11... Combustion burner, 13... Combustion tube, 16... Air supply duct, 17... Ventilation hole, 18
...Through hole, 19... Opening/closing lid, 20... Air supply filter.

Claims (1)

[Scope of utility model registration request] In a hot air heater in which a blower duct is provided in a case body equipped with a hot air outlet, and a blower is provided at one end of the blower duct, a vaporizer of a combustor including a vaporizer joint is provided in the case body, An air supply duct communicating with the combustor is arranged in parallel, and is located on a side plate of the case body that is close to the air supply port of the air supply duct and the carburetor joint, and is located on the side surface of the hot air outlet. A hot air heater characterized in that a through hole that also serves as a filter exchange port is bored, an opening/closing lid is provided in the through hole, and an air supply filter is attached to the opening/closing lid facing the air supply opening.