JPS6022272Y2 - Air nozzle in hot air generator - Google Patents

Description

[Detailed description of the invention] This invention relates to an air jet tube in a hot air generator that has good ignition performance and combustion efficiency.

The inner cylinder and outer cylinder form a double cylinder, and the inner cylinder serves as a combustion chamber. Air is forced into this intermediate layer, and this air is heated to be used for various purposes (for example, for cultivating shiitake mushrooms, greenhouses, etc.). There are hot air generators that can be used for cultivation, etc.

By the way, in recent years, solid fuels such as wood have been increasingly used as fuel in order to save energy.

If waste materials from shiitake mushroom cultivation could be used, the fuel cost would be even lower, but since these materials contain a lot of water, it would be difficult to ignite them with conventional hot air generators. However, there were drawbacks such as not being able to obtain enough fuel.

Therefore, this invention aims to eliminate the above-mentioned drawbacks by installing an air jet tube in the fan system for generating hot air in a hot air generator that burns solid fuel to branch out the air into the combustion chamber. It is something.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

FIG. 1 is a partially sectional side view of a hot air generator according to this invention, and FIG. 2 is a front view of the same.

The hot air generator is formed into a double cylinder in which an outer cylinder 2 surrounds an inner cylinder 1, and a fire port 3 and a rotor 4 are provided at the tip of the inner cylinder 1, and a smoke exhaust port 5 is provided at the rear end. This is used as the combustion chamber 6.

The outer cylinder 2 is provided so as to cover the inner cylinder 1, but the side walls 1a and 2a on the front end side are shared, and the side walls 1b and 2b on the rear end side are provided separately, while the outer cylinder 2 Connect the exhaust lower to the rear end of the

The fire pit 3 is provided with a lid 9 that can be opened and closed with hinges 8, 8', etc., and an air intake 10 that communicates with the combustion chamber 6 is formed in this lid 9, and a valve 1 is provided to open and close this air intake 10.
1 is connected to a bundle 12 or the like.

Note that the lid 9 is opened and closed by a handle 13 or the like.

FIG. 3 is a cross-sectional view taken along line XX' in FIG. The blower tube 14 is connected and a fan 15 is set at the rear end of the blower tube 14 so that air can be forcibly sent into the intermediate layer 16 between the inner tube 1 and the outer tube 2.

On the other hand, an air ejection tube 18 is provided in the blower tube 14 in parallel with the blower tube 14 so that the ejection port 17 at the tip thereof faces into the combustion chamber 6 .

The tip of this air jet tube 18 (the side near the fan 15) is open, and an on-off valve 19 that allows the air sent by the fan 15 to freely enter this portion is connected to a handle 20 exposed to the outside. and set up.

Note that FIG. 4 is an enlarged partial cross-sectional side view of this portion, and FIG. 5 is a plan view of the same.

Next, this hot air generator having the above configuration operates as follows.

Open the lid 9, place the fuel 21 on the Rosdol 4, and then ignite it.

At this time, while appropriately adjusting the valve 11 of the air intake port 10, the fan 15 is turned on and the blower tube 14 is turned on.
While blowing air into the interior, the on-off valve 19 is closed by the handle 20.
is operated to open, and a part of the air in the blower tube 14 is ejected from the outlet 17 of the air blower tube 18 into the combustion chamber 6.

By doing so, air is forcibly fed from both the air intake port 10 and the air jet tube 18, especially from the air jet tube 18, at the time of ignition, so that the ignition performance is improved by the so-called fire-breathing principle.

In addition, according to actual tests carried out by the drafters, it was more effective to form the jet nozzle 17 parallel to the inner cylinder 1 toward the rear end side.

Furthermore, even during combustion, the on-off valve 19 is opened as appropriate to feed air into the combustion chamber 6 while checking the state of combustion.

As described above, this invention forms a double cylinder with an inner cylinder 1 and an outer cylinder 2, and provides a fire port 3 and an air intake port 10 at the tip of the inner cylinder 1, and a smoke exhaust port 5 at the rear end to fuel solid fuel. In addition to forming a combustion chamber 6 for stoking, an air exhaust lower is provided at the rear end of the outer cylinder 2, and air is circulated from the tip side through the blower cylinder 14 by a fan 15 to create an intermediate layer between the inner cylinder 1 and the outer cylinder 2. In the hot air generator that warms the air and discharges the air from the exhaust lower, an air blowing tube 18 is installed inside the blowing tube 14 to allow air to be taken in freely by an on-off valve 19. An air jet tube for a hot air generator, characterized in that the air jet tube 18 is led out from the combustion chamber 6 in a relatively forward end side in a projecting manner, and has an appropriate jet port 17 at the tip of the air jet tube 18. be.

Therefore, first of all, it is necessary to supply air into the combustion chamber 6 not only from the conventional air intake port 10, but also from the air injection tube 18 separately and forcibly. Even fuel with a high moisture content can be ignited using the so-called fire-breathing principle, reducing fuel costs and being versatile for various types of fuel.

In addition, since forced air can be blown as needed even during combustion, combustion efficiency can be increased, and air can also be supplied to narrow gaps between solid fuels where air cannot be supplied by natural ventilation from the air intake port 10. can be pumped, and as a result, a larger amount of heat can be obtained from solid fuel.

Further, the air emitted from the air ejection pipe 18 and the ejection port 17 only makes effective use of a part of the air for generating warm air, which has been indispensable in the past, and does not require any special air blowing mechanism. Therefore, a secondary advantage is that there is no increase in costs.

[Brief explanation of the drawing]

The drawings show a specific example of this invention; Fig. 1 is a partially sectional side view of the hot air generator, Fig. 2 is a front view, and Fig. 3 is a partial cross-sectional side view of the hot air generator.
FIG. 4 is an enlarged sectional side view showing details of the air jet tube, and FIG. 5 is a plan view. Code, 1...Inner cylinder, 2...Outer cylinder, 3.
...Fire outlet, 5...Smoke exhaust port, 6...
...Combustion chamber, 7...Exhaust port, 10...
Air intake, 14...Blower tube, 15...
・Fan, 16...Intermediate layer between inner cylinder and outer cylinder, 17
...Air jet nozzle, 18...Air jet pipe, 19...Opening/closing valve.

Claims (1)

[Claims for Utility Model Registration] 1. The inner cylinder 1 and the outer cylinder 2 form a double cylinder, and the inner cylinder 1 is provided with a fire port 3 and an air intake port 10 at its tip, and a smoke exhaust port 5 at its rear end. A combustion chamber 6 that burns solid fuel is formed, and an air exhaust lower is provided at the rear end of the outer cylinder 2, and air is circulated from the tip side through the blower cylinder 14 by a fan 15 to connect the inner cylinder 1 and the outer cylinder 2. In the hot air generator, the air is sent to the middle layer 16 of the air, warmed, and discharged from the air exhaust lower. is led out from inside the blower tube 14 inward toward the relatively leading end of the combustion chamber 6 in an overhanging manner, and this air blower tube 1
8. An air jet tube for a hot air generator, characterized in that an appropriate jet port 17 is provided at the tip of the air jet tube. 2. Claims for registration of a utility model, characterized in that the ejection port 17 is formed toward the axial direction of the inner cylinder so that air is ejected toward the rear end side of the combustion chamber 6. An air jet tube in the hot air generator according to item 1.