JP3209488U - Wood stove with wood dryer - Google Patents

Abstract

A firewood stove equipped with an artificial firewood dryer for drying firewood safely in a short time, with less labor and economically is provided. SOLUTION: A soot dryer 3 having soot to be dried M2 is installed in contact with a duct 4 through which soot combustion gas G2 flows, and the soot M2 to be dried is indirectly heated by using heat of soot combustion gas G2. dry. The internal temperature of the soot dryer 3 is set to 100 ° C. or higher for drying in a short time, and is set to 250 ° C. or less of the ignition temperature of the dry soot M2 so as not to ignite, so that the soot combustion gas G1 and the indoor air A2 A heat exchanger 2 is installed to cool the hot soot combustion gas G1. [Selection] Figure 1

Description

The present invention relates to a device configuration of a wood stove.

Firewood immediately after cutting has a high moisture content (= water weight / wood weight) of 90% to 120%. When burning soot having a high water content, the heat of vaporization when the water contained in the soot becomes water vapor is taken away from the combustion heat, so that the combustion temperature is lowered and a problem of generating smoke is generated.

For this reason, the moisture content of the wood-burning stove is required to be 20% or less. A cocoon having a moisture content of 20% or less is generally made by naturally drying a cocoon harvested for one to two years on a ledge installed outdoors.

However, it is necessary to manage soot that has a moisture content of 20% or less by natural drying so that it does not come into contact with rain for one to two years, which takes a lot of time and cost. There was a problem.

The problem to be solved by the present invention is to provide a wood stove in which a wood dryer is installed that does not require safety and does not require much labor.

The problem of providing a wood-burning stove that has a short drying time and does not require a lot of labor is to provide a wood-burning stove instead of natural drying. This can be solved by installing a cocoon dryer that heats and dries in the atmosphere.

When the atmosphere temperature of the soot is 100 ° C. or higher, the water contained in the soot is released as water vapor, so that the drying speed is high and the drying time can be shortened.

At this time, the soot atmosphere temperature needs to be lower than the soot ignition point so that the soot does not ignite during drying. Various hardwoods and various softwoods are used for the firewood, and the fire point of these firewoods is 250 to 470 ° C. The fire point of firewood varies depending on the firewood used. However, if the atmosphere temperature of firewood does not exceed 250 ° C, firewood fire can be prevented and the firewood can be dried without sacrificing safety. Become.

According to the present invention, it is possible to obtain an effect of providing a wood stove in which a wood dryer is installed in a short time, with little effort, and without impairing safety.

It is the schematic which shows the firewood stove which installed the firewood dryer which becomes one Example of 1st this invention. (Example 1) It is the schematic which shows the firewood stove which installed the firewood dryer which becomes one Example of 2nd this invention. (Example 2) It is the schematic which shows the wood stove which installed the wood dryer which becomes one Example of 3rd this invention. Example 3

As shown in FIG. 1, the wood stove provided with the wood dryer according to the first embodiment of the present invention mainly includes a combustion chamber 1, a heat exchanger 2, a wood dryer 3, and a duct 4. In the combustion chamber 1, the introduced soot M <b> 1 is combusted by the supplied air A <b> 1 and soot combustion gas G <b> 1 is discharged. The temperature of the soot combustion gas G1 when the soot M1 is combusted is generally 500 ° C. to 800 ° C.

In the heat exchanger 2, the soot combustion gas G1 from 500 ° C. to 800 ° C. and the indoor air A2 at about 25 ° C. are heat-exchanged, and the soot combustion gas G1 to be cooled is the soot combustion gas whose temperature is lowered from 150 ° C. to 300 ° C. The indoor air A2 heated to G2 becomes air A3 whose temperature has increased from 50 ° C. to 100 ° C. and is discharged.

The soot drier 3 is installed in contact with the duct 4 through which the soot combustion gas G2 flows, and the soot-dried soot M2 inside is heated by the soot combustion gas G2 at 150 ° C. to 300 ° C. flowing through the duct 4 and contains moisture contained therein. It is discharged as steam and becomes dry soot. The generated water vapor is discharged from the soot dryer 3 into the room. The soot combustion gas G2 having a temperature of 150 ° C. to 300 ° C. introduced into the duct 4 is deprived of heat and becomes a soot combustion gas G3 having a temperature reduced from 100 ° C. to 150 ° C.

By setting the temperature of the soot combustion gas G2 at the inlet from 150 ° C. to 300 ° C. and the temperature of the soot combustion gas G3 at the outlet from 100 ° C. to 150 ° C., the internal temperature of the soot dryer 3 having the soot to be dried M2 is set to 100 It is easily possible to keep the temperature at 250 ° C. or higher.

In a firewood stove equipped with a firewood dryer 3 according to the first embodiment of the present invention, a drywood m2 made of cedar wood having a cross-sectional area of 100 square centimeters, a length of 40 centimeters and a moisture content of 110% is provided. When dried in 3, the moisture content of the dried soot M2 became 20% or less after 4 hours.

At this time, the average temperature in the soot dryer 3 was 130 ° C., and the indoor average temperature during soot drying was 25 ° C.

The soot stove provided with the soot dryer according to the second embodiment of the present invention is mainly composed of a combustion chamber 1, a heat exchanger 2, and a soot dryer 5, as shown in FIG. In the combustion chamber 1, the introduced soot M1 is combusted by the supplied air A1, and soot combustion gas G1 of 500 ° C. to 800 ° C. is discharged.

In the heat exchanger 2, the soot combustion gas G1 from 500 ° C. to 800 ° C. and the indoor air A2 at about 25 ° C. are supplied for heat exchange, and the soot combustion gas G1 to be cooled drops in temperature from 150 ° C. to 300 ° C. The heated air A2 becomes the heated air A3 whose temperature is increased from 50 ° C. to 100 ° C. and is discharged.

In the cocoon dryer 5, a flat or corrugated partition plate 6 is installed inside, and the drying tub M <b> 2 is placed in one space partitioned by the partition plate 6, and the other space has the above-mentioned Combustion gas G2 is introduced. The drying soot M2 in the soot dryer 5 is heated by the soot combustion gas G2 flowing from 150 ° C. to 300 ° C. through the other space via the partition plate 5, and the contained water is discharged as steam. Become dry cocoon. The generated water vapor is discharged from the soot dryer 5 into the room. At this time, the soot combustion gas G2 at 150 ° C. to 300 ° C. introduced into the soot dryer 5 is deprived of heat, and becomes soot combustion gas G4 whose temperature has been lowered from 100 ° C. to 150 ° C.

The temperature of the soot combustion gas G2 at the inlet of the soot dryer 5 is 150 ° C. to 300 ° C., and the temperature of the soot combustion gas G4 at the outlet is 10 ° C. to 150 ° C. It is easily possible to keep the temperature at 250 ° C. or higher.

Even in a wood stove equipped with a wood dryer 5 according to Example 2 of the present invention, immediately after logging, a covering of cedar wood having a cross-sectional area of about 100 square centimeters, a length of about 40 centimeters, and a moisture content of 110%. When the dried straw M2 was dried in the straw dryer 5, after 4 hours, the moisture content of the dried straw M2 of the cedar was 20% or less.

The soot stove provided with the soot dryer according to the third embodiment of the present invention is mainly composed of a combustion chamber 1 and a soot dryer 7 as shown in FIG. In the combustion chamber 1, the introduced soot M1 is combusted by the supplied air A1, and soot combustion gas G5 at 500 ° C. to 800 ° C. is discharged.

In the cocoon dryer 7, a flat or corrugated partition plate 8 is installed therein, and a drying tub M 3 is placed in one space partitioned by the partition plate 8, and a heat transfer tube 9 is installed in the other space. Is installed. Inside the heat transfer tube 9, indoor air A4 of about 25 ° C. flows, and the combustion gas G5 of 500 to 800 ° C. flows outside.

In the space where the heat transfer tube 9 is installed in the soot dryer 7, the soot combustion gas G5 exchanges heat with the air A4 through the surface of the heat transfer tube 9, and is covered through the partition plate 8. Heat exchange is performed with the space where the drying basket M2 is charged. By this heat exchange, the soot combustion gas G5 becomes the soot combustion gas G6 whose temperature is lowered from 100 ° C. to 150 ° C., and the air A4 becomes the air A5 at 50 ° C. to 100 ° C.

The to-be-dried soot M3 in the soot dryer 7 discharges the contained moisture as water vapor by heating from the soot combustion gas through the partition plate 8, and becomes dry soot. The water vapor generated from the drying basket M3 is discharged into the room.

In order to lower the temperature of the soot combustion gas so that the soot to be dried M3 does not ignite in the soot dryer 7, the flow rate of the air A4 is increased compared to the diversion of the air A2 in the first and second embodiments and the heat transfer tube 9 Enough heat transfer area.

In the third embodiment of the present invention, since the heat exchanger is eliminated, there is an advantage that it is possible to provide a wood stove provided with a more compact wood dryer than the first and second embodiments of the present invention.

DESCRIPTION OF SYMBOLS 1 Combustion chamber 2 Heat exchanger 3, 5, 7 薪 Dryer 4 Duct 6, 8 Partition plate 9 Heat transfer pipe A1, A2, A3, A4, A5 Air G1, G2, G3, G4, G6, G6 薪 Combustion gas M1薪 M2, M3 Dried rice cake

Claims (2)

A combustion chamber for burning soot, a heat exchanger for exchanging heat between the soot combustion gas generated in the combustion chamber and room air, and a soot dryer into which the soot to be dried is placed. A soot dryer is installed in contact with a duct through which soot combustion gas exiting the heat exchanger flows, and the soot dryer has an internal temperature of 100 ° C. or more and 250 ° C. or less. Installed wood stove. It has a combustion chamber for burning soot, and a flat or corrugated partition plate is installed inside. One space separated by this partition plate is filled with the soot to be dried, and the other space is filled with air inside the pipe. And a soot dryer provided with a heat transfer tube in which the soot combustion gas flows outside the tube, and the temperature of the space into which the soot to be dried of this soot dryer is charged is 100 ° C. or more and 250 ° C. or less A wood stove equipped with a wood dryer characterized by

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