JPS621524Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a hot air generation device that combines a combustion device that burns rice husks, sawdust, etc. and a blower device. This invention relates to an improvement in an indirect type hot air generating device that extracts hot air.

A combustion device that uses rice husks, sawdust, etc. as a combustion source burns volatile gas produced by carbonization of rice husks in a combustion chamber surrounded by a layer of rice husks, as described in Japanese Utility Model Application Publication No. 53-5551. The combustion causes the rice husks around the combustion chamber to be carbonized to continue the combustion operation. By suctioning combustion gas from the combustion chamber to create a negative pressure inside the combustion chamber, and by continuously discharging the rice husk (smoky charcoal) from the rice husks that have been carbonized downward,
It is necessary to ensure that a fresh layer of rice husk is constantly supplied around the combustion chamber.

For this reason, this combustion device is required to have two blowers: one for sucking combustion gas from the combustion chamber and one for blowing off the cinders of the rice husks that are discharged.

By the way, in the case of a hot air generation device using a combustion device such as rice husk, which is a direct hot air type in which the generated combustion gas is directly used as hot air, the blower that sucks the combustion gas from the combustion chamber is equipped with the above-mentioned device. Although it is possible to use a blower that takes out the generated hot air as described in Japanese Patent Publication No. 53-5551,
When the combustion gas is drawn out through a heat exchanger and the hot air is taken out as indirect hot air through the heat exchanger, the blower that takes out the generated hot air can be used as the blower that draws out the combustion gas from the combustion chamber. Since this is not possible, a separate blower must be prepared to draw out the combustion gas, and the cost increases as the number of blowers increases.

The present invention was developed to solve this problem, and is a new method that uses indirect hot air to draw out combustion gas from the combustion chamber without the need for a special blower. The purpose is to provide a means to do so.

In the present invention, as a means to achieve this objective, an exhaust port is provided in the cinder accumulation section installed at the bottom of the furnace body for burning rice husks, sawdust, etc., and the blower discharge is connected to the exhaust port. An ejector for blowing off cinders by wind is connected, and an exhaust port of a heat exchanger whose intake port is connected and communicated with the hot air discharge port of the furnace body is connected and communicated with the inlet port of the blower via a connecting pipe. The present invention proposes an indirect hot air generation device using a combustion device of rice husks, etc., which is characterized by its characteristics.

Next, an example of implementation will be specifically described with reference to the drawings.

In the figure, reference numeral 1 denotes the furnace body of a combustion device A for burning rice husks, sawdust, etc., which is formed into a vertically long cylindrical shape. It is formed in a storage part a for storing. A heating plate 11 formed in an umbrella shape is suspended between the upper and lower parts of the inner vagina of the furnace body 1 to support the rice husks and the like supplied to the storage part in an accumulated state. A cavity W into which rice husks etc. do not flow is formed by the rice husks and the heating plate 11, and a combustion tube 12 communicating with the cavity W is installed horizontally above the umbrella-shaped heating plate 11. Furthermore, a heat insulating tube 13 surrounding the outer periphery of the combustion tube 12 is installed horizontally, and thereby the ignition tube 1 provided in the furnace body 1 is heated.
Insert the ignition rod from step 4 into the empty chamber W mentioned above, and
By igniting the surface layer of the rice husk, etc. exposed inside, the rice husk, etc. burns and heats the rice husk, etc. around the heating plate 11 and around the empty space W, and the volatile gas generated by the heating is heated. The gas is combusted in the combustion tube 12 from the empty chamber W, and then the combustion continues to burn while drying surrounding rice husks etc. by the heating of the combustion. The burned combustion gas is discharged from the widely open end of the combustion tube 12 through the heat insulating tube 13 to the outside of the furnace body 1 as the hot air outlet M in the widely open open end of the heat insulating tube 13. It's summery.

Reference numeral c denotes an accumulation section for accumulating cinders such as rice husks burned in the combustion section b, which is disposed below the slatted shelf board 15 disposed below the empty chamber W and the shelf board 12 thereof. A rotary disk 17 rotates around a pipe 16 for supplying combustion air to the vacant chamber W, a cinder scraping port 18 provided on the rotary disk 17, and cinders falling downward from the cinder hole 18 are collected. A discharge port Y provided at the bottom of the hopper 19 serves as an outlet for removing cinders from the machine.

Reference numeral 2 denotes an ejector connected to the discharge port Y, in which the embossed pipe tip 22 of the blower pipe 21 of the blower 20 enters from one side, and the conveyor pipe 23 enters the other side.
are connected to each other, and a jet stream accelerated and ejected from the pipe tip 22 of the blower 20 sucks cinders such as rice husks from the inside of the hopper 19 and blows them into the transport pipe 23. 23 to convey it to a desired location.

Reference numeral 3 denotes a heat exchanger in which an intake port N is connected to the outer end opening of the heat insulating cylinder 13, which is the hot air discharge port M, and the outer periphery is surrounded by an outer casing 4, and a suction port 50 is connected and communicated with the outer casing 4. When the blower 5 is operated, outside air flows into the heat exchanger 3 through the air intake port 40 provided in the outer casing 4.
By flowing into the air outlet 51 of the blower 5 in contact with the outer peripheral surface of the heat exchanger 3, the heat of the hot air introduced into the internal vagina of the heat exchanger 3 is imparted to the outside air, and is taken out from the air outlet 51 as hot air at a predetermined temperature. It is designed so that

Therefore, the exhaust port L of the heat exchanger 3, through which the hot air that has been guided into the internal vagina of the heat exchanger 3 and has completed the heat exchange is discharged to the outside, is connected to the ejector 2 through the connecting pipe 30. Inlet port 20a of blower 20
By operating this blower 20, the hot air that has undergone the heat exchange described above is discharged to the outside as exhaust air, and at the same time, new hot air is continuously supplied from the intake port N to the internal vagina of the heat exchanger 3. It is expected that it will be introduced.

The embodiment device constructed in this manner operates as follows.

Rice husks are loaded into the furnace body 1 as shown in the figure, and an ignition rod is inserted into the combustion chamber (empty chamber W) formed by the rice husks from the ignition tube 14 to ignite, thereby starting. By the way, blower 20
If you operate the blower 5 at the same time,
The combustion gas burning in the combustion chamber (vacant chamber W) is
The burnt ash (smoky coal) of rice husks that is sucked into the air intake port 20a of the blower 20 through the heat exchanger 3 and accumulated in the hopper 19 at the bottom of the furnace body 1 is sucked out from the air discharge pipe 21 of the blower 20. The air is carried out by the discharged air, and the air heated by heat exchange with the heat exchanger 3 is taken out as indirect hot air by the blower 5.

As explained above, the indirect hot air generation device using the combustion device for rice husks, etc. according to the present invention has an exhaust port Y provided in the cinder accumulation part c installed at the bottom of the furnace body 1 for burning rice husks, sawdust, etc. An ejector 2 that blows off cinders with the discharge air of a blower 20 is connected to the exhaust port Y, and an exhaust port L of a heat exchanger 3 is connected to the hot air discharge port M of the furnace body 1 and an intake port N is connected thereto. Since it is configured to be connected to the intake port 20a of the blower 20 via the connecting pipe 30, the suction operation of the blower 20, which carries out the burnt husks of rice husks with the discharge air, removes the combustion gas from the combustion chamber (vacant chamber W). This makes it possible to generate indirect hot air while drawing out combustion gas from the combustion chamber without the need for a separate blower, thereby reducing the cost increase associated with increasing the number of blowers. become.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an embodiment of the present invention. Explanation of drawing symbols, A... Combustion device, a... Storage section, b... Combustion section, c... Accumulation section, 1... Furnace body,
10... Supply pipe, 11... Heating plate, 12...
Combustion tube, 13...Insulation tube, 14...Ignition tube, 15
... Shelf board, 16 ... Supply pipe, 17 ... Turntable, 18 ... Cutting outlet, 19 ... Hopper, 2
...Ejector, 20...Blower, 20a...
...Intake port, 21...Discharge pipe, 22...Tip tip, 23
...Transport tube, 3...Heat exchanger, 4...Outer casing, 40
...Air intake port, 5...Blower, 50...Suction port, 51...Air discharge port, M...Discharge port, N...Intake port, L...Exhaust port, W...Vacancy, Y... Vent.

Claims (1)

[Scope of utility model registration request] An ejector Y is provided in the cinder accumulation part c installed at the bottom of the furnace body 1 for burning sawdust such as rice husks, and an ejector 2 is connected to the ejector Y to blow off the cinders with the discharge air of a blower 20. The exhaust port L of the heat exchanger 3, which connects the intake port N to the hot air discharge port M of the furnace body 1, is connected to and communicates with the intake port 20a of the blower 20 via a connecting pipe 30. An indirect hot air generation device that uses a combustion device such as rice husk.