JPH09152269A - Dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut down costs required for drying by a method wherein a drying chamber to accommodate an object to be dried and a combustion chamber to incinerate an object to be burned are provided, and high-temperature heating medium generated from the combustion chamber is led into the drying chamber to heat up the inside of the drying chamber. SOLUTION: Building waste materials are incinerated in a combustion chamber 4a of an incinerator 4 and hot-water in a hot-water pipeline 3 that is laid in a drying chamber 1a is heated by combustion heat from the combustion chamber 4. The hot water is circulated to heat up the inside of the drying chamber 1a and dry lumbers A. At the same time, a microwave oscillator 5 is brought in operation to promote drying of the lumbers A from inside by induction heating of microwaves. In addition, a far infrared ray heater 6 is brought in operation to heat the lumbers A by far infrared rays and promote drying. Furthermore, a dehumidifier is operated to remove moisture vaporized from the lumbers A and lower the humidity inside the drying chamber 1a to expedite drying, and an air fan is operated to circulate air inside the drying chamber 1a to accelerate drying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article drying apparatus that removes water from, for example, wood and treats it so that it can be used as a building material or the like.

[0002]

2. Description of the Related Art Generally, wood has an in-growth stress that causes deformation such as twisting and warping with the passage of time, but when used as a building material, wood with a low in-growth stress is required. To be done. Therefore, recently, wood, which is hardly deformed over the years by heat treatment of wood to reduce its water content, has been attracting attention as a new material, and it is expected to be used in many fields including construction materials. Has been done. In this case, a drying device that heats wood to evaporate water is used for heat treatment of wood.

[0003]

However, since a huge amount of fuel is required to heat a long or large amount of wood used as a building material, heat treatment of wood requires a great amount of fuel cost. However, there is a problem that the wood becomes expensive.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an article drying apparatus which can reduce the cost required for drying.

[0005]

In order to achieve the above object, the present invention provides, in claim 1, a drying chamber for accommodating a drying object, a combustion chamber for incinerating an arbitrary combustion object, and a combustion chamber. The high temperature heat medium generated by the combustion heat is circulated in the drying chamber to heat the high temperature heat medium to radiate the heat to heat the drying chamber. Thus, by incinerating waste such as construction waste and garbage in the combustion chamber, the exhaust heat is used as a heat source in the drying chamber.

[0006] According to a second aspect of the present invention, a first drying chamber for accommodating an object to be dried, a combustion chamber for incinerating an arbitrary object to be combusted and supplying combustion air to the first drying chamber, and an object to be dried. And a heating means for circulating the high-temperature heat medium generated by the combustion heat of the combustion chamber into the second dry chamber to heat the high-temperature heat medium to heat the second dry chamber. ing. Thus, for example, when drying wood, primary drying is performed in the first drying chamber and secondary drying is performed in the second drying chamber. At that time, since the combustion heat of the combustion chamber, which is the heat source of the first drying chamber, is used as the heat source of the second drying chamber, no additional fuel is required for the heat source of the second drying chamber. Also, when waste such as construction waste and garbage is incinerated in the combustion chamber, the exhaust heat is used as a heat source for each drying chamber.

According to a third aspect of the present invention, in the article drying apparatus according to the second aspect, the second drying chamber is provided adjacent to the first drying chamber via partition means having heat conductivity.
As a result, the heat of the first drying chamber is transferred to the second drying chamber, and the transferred heat also heats the second drying chamber.

According to a fourth aspect of the invention, an auxiliary heating means for radiating an electromagnetic wave for dielectric heating is provided in the drying chamber of the first aspect or the second drying chamber of the second aspect. As a result, the object to be dried is also heated by the dielectric heating of electromagnetic waves, so that the drying of the object to be dried is promoted.

According to a fifth aspect of the present invention, auxiliary heating means for radiating far infrared rays is provided in the drying chamber of the first aspect or the second drying chamber of the second aspect. As a result, the object to be dried is also heated by the far infrared rays, so that the drying of the object to be dried is promoted.

Further, in the sixth aspect, the dehumidifying means for dehumidifying the drying chamber in the first aspect or the second drying chamber in the second aspect is provided. As a result, the moisture that has evaporated from the object to be dried is removed by the dehumidifying means, so that the drying of the object to be dried is promoted.

[0011]

1 to 4 show one embodiment of the present invention. FIG. 1 is an overall perspective view of an article drying apparatus, FIG. 2 is a plan sectional view of a drying apparatus main body, and FIG. A front sectional view, and FIG. 4 is a side sectional view thereof.

This article drying apparatus includes a drying apparatus main body 1 for containing a drying object, a truck 2 for putting the drying object in and out of the drying apparatus main body 1, a hot water pipe 3 for heating the inside of the drying apparatus main body 1, and hot water. Incinerator 4 for generating heat source for pipe 3
A microwave oscillator 5 that radiates microwaves into the drying device main body 1, a far infrared heater 6 that radiates far infrared rays into the drying device main body 1, and a dehumidifier 7 that dehumidifies the inside of the drying device main body 1. It consists of a blower fan 8 that circulates the air inside the dryer main body 1, and the trolley 2 is loaded with lumber A after sawing as an object to be dried.

The drying apparatus main body 1 is composed of a building whose inside is formed as a drying chamber 1a, and is installed, for example, on the premises of a sawmill. The drying apparatus main body 1 has an opening / closing door 1b on the front surface, and a roof has a skylight 1c for taking in sunlight from the outside.

The truck 2 is suspended by a plurality of trucks 2a and runs on a rail 2b which is laid inside and outside the main body 1 of the drying apparatus.

The hot water pipe 3 is piped in the drying chamber 1a and in the incinerator 4, is connected to the hot water tank 3a installed outside the drying apparatus main body 1, and the hot water is supplied by the pump 3b provided in the pipeline. It circulates. The hot water pipe 3 in the main body 1 of the drying device is laid in a meandering shape along the inner surface of the drying chamber 1a, and although not shown, a fin or the like is provided on the peripheral surface of the hot water pipe 3 to enhance the heat radiation effect. .
A water supply pipe 3c for supplying water as a heat medium is connected to the hot water tank 3a.

The incinerator 4 is installed outside the dryer main body 1 and heats the hot water pipe 3 by burning an object to be burned in the internal combustion chamber 4a.

The microwave oscillator 5 comprises a well-known device such as a magnetron, and is installed at a plurality of locations on the inner wall surface of the drying chamber 1a.

The far-infrared heater 6 comprises a well-known device such as an electric heater, and is installed at a plurality of places on the floor of the drying chamber 1a.

The dehumidifier 7 is an air conditioner using a refrigerator, etc.
The well-known device is installed on the ceiling surface of the drying chamber 1a.

The blower fan 8 is composed of well-known devices such as various blowers, and is installed at a plurality of upper portions in the drying chamber 1a.

In the article drying apparatus configured as described above, incinerating construction waste materials or the like in the combustion chamber 4a of the incinerator 4, the hot water in the hot water pipe 3 is heated by the combustion heat of the combustion chamber 4a, By circulating this hot water through the hot water pipe 3, the hot water pipe 3 in the drying apparatus main body 1 generates heat. As a result, the inside of the drying chamber 1a is heated and the wood A in the drying chamber 1a is heated.
Is dried. At that time, when the microwave oscillator 5 is activated, microwaves are radiated into the drying chamber 1a, and the dielectric heating of the microwaves heats the wood A from the inside to accelerate the drying. When the far infrared heater 6 is activated,
Far infrared rays are radiated into the drying chamber 1a, and the wood A is heated by the far infrared rays to accelerate the drying. Furthermore, the drying room 1a
Since sunlight is taken into the interior through the skylight 1c of the drying apparatus main body 1, the temperature in the drying chamber 1a rises due to the incidence of sunlight to accelerate the drying. Further, when the dehumidifier 7 is operated, the moisture evaporated from the wood A is removed, the humidity in the drying chamber 1a is lowered, and the drying is promoted. Further, when the blower fan 8 is operated, the air in the drying chamber 1a is circulated to accelerate the drying.

As described above, according to the article drying apparatus of this embodiment, the hot water generated by the combustion heat of the combustion chamber 4a is circulated to the hot water pipe 3 in the drying chamber 1a, and the heat radiation of the hot water pipe 3 radiates the heat to the drying chamber 1a. Since the wood A in the wood A is dried, by incinerating wastes such as construction waste materials and dust in the incinerator 4, the exhaust heat can be used as a heat source to heat the inside of the drying chamber 1a. The fuel cost required for drying can be significantly reduced. In addition to heating the hot water pipe 3, a microwave oscillator 5, a far infrared heater 6, a dehumidifier 7
Further, since the drying can be promoted by operating the blower fan 8 as necessary, the drying time can be further shortened.

In the above embodiment, the example in which the wood A is used as the object to be dried is shown, but it is also possible to use it for drying other articles with the same configuration. Further, in the above embodiment, hot water is circulated as the high-temperature heat medium of the heating means, but it is also possible to use other heat medium such as brine or the above.

5 to 7 show another embodiment of the present invention. FIG. 5 is a plan sectional view of the drying apparatus main body, FIG. 6 is a side sectional view thereof, and FIG. 7 is a side sectional view thereof. The same components as those in the above embodiment are denoted by the same reference numerals.

The drying apparatus main body 10 shown in the same figure has a first drying chamber 10a for performing a primary drying process on an object to be dried and a second drying chamber 10b for performing a secondary drying process on an object to be dried.
And a combustion chamber 10c that generates a heat source for each of the drying chambers 10a, and each drying chamber 10a is provided with a truck 2 that is the same as that of the above embodiment. The main body 10 of the drying device has a front door 10d and a second drying chamber 10d of the first drying chamber 10a.
b has an opening / closing door 10e, and a second drying chamber 10b
Is provided adjacent to the first drying chamber 10a and the combustion chamber 10c in the width direction via a heat conductive partition wall 10f. The first drying chamber 10a and the combustion chamber 10c are the drying device body 10
Are partitioned in the front-rear direction and communicate with each other by a plurality of vent holes 10g provided in the partition wall. An exhaust port 10h is provided on the front side surface of the first drying chamber 10a, and the exhaust port 10h is connected to an exhaust cylinder 10i whose one end is open to the outside. The second drying chamber 10b includes the microwave oscillator 5, the far-infrared heater 6, the dehumidifier 7, and the blower fan 8 which are the same as those in the above-described embodiment, and these function in the same manner as in the above-described embodiment.

The hot water pipe 11 shown in the figure is the second drying chamber 1
0b and the combustion chamber 10c, and is connected to a hot water tank 11a installed outside the drying apparatus main body 10 as in the above embodiment, and a pump 1 installed in the pipeline.
Hot water is circulated by 1b.

In the article drying apparatus of the present embodiment, the first drying chamber 10a stores the lumber B such as raw wood which has not yet been lumbered, and the second drying chamber 10b stores the lumber after lumbering as in the previous embodiment. A is accommodated. Then, by burning wood for fuel or the like in the combustion chamber 10c, the combustion air generated in the combustion chamber 10c flows into the first drying chamber 10a through the respective vent holes 10g, and the combustion air is dried in the first drying state. It flows through the chamber 10a and flows out from the exhaust port 10h. Thereby, the first
The wood B in the drying chamber 10a is directly heated by the combustion air to dry the wood B. Further, the hot water in the hot water pipe 11 is heated by the combustion heat of the drying chamber 10a, and the hot water circulates in the hot water pipe 11 to generate heat in the hot water pipe 11 in the second drying chamber 10b. Thereby, the second
The interior of the drying chamber 10b is heated, and the wood A in the second drying chamber 10b is dried. At that time, the second drying chamber 10b
The heat of the first drying chamber 10a and the combustion chamber 10c is transmitted through the partition wall 10f, the transfer heat also heats the inside of the second drying chamber 10b, and the wood A in the second drying chamber 10b is dried. Be promoted.

In the article drying apparatus, the wood B is heated in the first drying chamber 10a at 100 ° C to 120 ° C as a primary drying process.
The wood B is heated to about 0 ° C., and most of the water contained in the wood B is removed. Further, the wood B that has undergone the primary drying process is lumbered into a predetermined shape, and is used as wood A in the second drying chamber 10b.
Is subjected to a secondary drying process. In the second drying chamber 10b, the wood A is heated to about 70 ° C. to 100 ° C.
The remaining water contained in is almost completely removed. At that time, since the wood A is heated by the radiant heat of the hot water pipe 11 in the second drying chamber 10b, the wood B is in direct contact with the combustion air as in the first drying chamber 10a and the surface is burnt or burned. The soot of air does not adhere to the lumber A and the lumber A can be dried without being contaminated.

As described above, according to the article drying apparatus of this embodiment, the first drying chamber 10a for heating the object to be dried by the combustion air generated in the combustion chamber 10c and the hot water pipe 11 are provided.
Second drying chamber 1 for heating an object to be dried by radiant heat of
0b and the hot water of the hot water pipe 11 is generated by the combustion heat of the combustion chamber 10c, the second drying chamber 1
No additional heat source of 0a is required, and fuel cost can be significantly reduced. In this case, if construction waste materials, waste materials, or other waste materials are used as fuel, the cost can be significantly reduced. Further, since the second drying chamber 10b is provided adjacent to the first drying chamber 10a and the combustion chamber 10c via the partition wall 10f, the first drying chamber 10a and the combustion chamber 10c are provided.
Heat of the second can be transferred to the second drying chamber 10b,
The inside of the drying chamber 10b can be efficiently heated.

[0030]

As described above, according to the article drying apparatus of the first aspect, the waste heat is utilized as the heat source of the drying chamber by incinerating the waste such as the construction waste and the garbage in the combustion chamber. Therefore, the fuel cost can be significantly reduced. Therefore, for example, when water is removed from wood so that it can be used as a building material or the like, the cost required for the heat treatment of the wood can be reduced, and thus wood with a high utility value as a building material or the like can be provided at low cost.

According to the article drying apparatus of claim 2,
For example, when drying wood, the first
Since the heat source of the second drying chamber that performs secondary drying can be used as the heat source of the second drying chamber, a separate fuel is not required for the heat source of the second drying chamber, and the fuel cost is significantly reduced. be able to. At that time, if waste materials such as construction waste materials and dust are incinerated in the combustion chamber, the exhaust heat can be used as a heat source of each drying chamber, so that the cost can be further reduced.

According to the article drying apparatus of claim 3,
In addition to the effect of the second aspect, the second drying chamber can be heated by the heat transmitted from the first drying chamber, so that the second drying chamber can be efficiently dried.

Further, according to the article drying apparatus of claims 4, 5 and 6, in addition to the effect of claim 1 or 2, the drying of the object to be dried can be promoted, so that the drying time can be shortened. You can

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an article drying apparatus showing an embodiment of the present invention.

FIG. 2 is a plan cross-sectional view of the drying device main body.

FIG. 3 is a front sectional view of the main body of the drying device.

FIG. 4 is a side sectional view of the main body of the drying device.

FIG. 5 is a plan cross-sectional view of a drying apparatus main body showing another embodiment of the present invention.

FIG. 6 is a front sectional view of the main body of the drying device.

FIG. 7 is a side sectional view of the main body of the drying device.

[Explanation of symbols]

1a ... drying chamber, 3 ... hot water pipe, 4a ... combustion chamber, 5 ... microwave oscillator, 6 ... far infrared heater, 7 ... dehumidifier, 10
a ... 1st drying chamber, 10b ... 2nd drying chamber, 10c ... Combustion chamber, 10f ... Partition wall, 11 ... Hot water piping, A, B ... Wood.

Claims (6)

[Claims] 1. A drying chamber for accommodating an object to be dried, a combustion chamber for incinerating an arbitrary object to be combusted, and a high temperature heat medium generated by combustion heat of the combustion chamber is circulated in the drying chamber to radiate the high temperature heat medium And a heating means for heating the inside of the drying chamber according to the above. 2. A first drying chamber for containing an object to be dried, a combustion chamber for incinerating an arbitrary object to be burned to supply combustion air to the first drying chamber, and a second chamber for containing an object to be dried. And a heating means for circulating the high temperature heat medium generated by the combustion heat of the combustion chamber into the second drying chamber to heat the second drying chamber by radiating the high temperature heat medium. Article drying device. 3. The article drying apparatus according to claim 2, wherein the second drying chamber is provided adjacent to the first drying chamber via a partitioning means having heat conductivity. 4. The drying chamber according to claim 1 or claim 2.
2. An article drying apparatus comprising: an auxiliary heating unit for radiating an electromagnetic wave for dielectric heating in the second drying chamber in. 5. The drying chamber according to claim 1 or claim 2.
2. An article drying apparatus, comprising: an auxiliary heating unit for radiating far infrared rays in the second drying chamber in. 6. The drying chamber according to claim 1 or claim 2.
And a dehumidifying means for dehumidifying the inside of the second drying chamber.