JPS625072A - Drier for hollow wood - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an apparatus for drying wood made of natural wood used for floor pillars and decorative pillars, particularly long hollow wood.

(b) Conventional technology Floor pillars and decorative pillars are indispensable decorative pillars in the tokonoma of Japanese-style architecture, and are made of decorative pillars made of precious wood or the like. However, pillar beds and decorative pillars made of natural wood dry and crack over time, requiring a long period of time to finish and resulting in poor yields.

A method to solve these problems was published in Japanese Patent Application Laid-Open No. 60-5
This method is described in Japanese Patent No. 7181, and the method is characterized by forming a long piece of wood into a hollow member having a hollow part inside, and drying the wood by applying hot air to the hollow part and the outer periphery of the hollow member. shall be.

Furthermore, the same method can prevent cracks from forming on the outer periphery of the wood.

(c) Problems to be Solved by the Invention However, such drying methods still have the following problems.

■The whole structure becomes complicated because a unique supply means is required to supply hot air not only to the hollow part but also to the outer circumferential part.

■Since hot air must be sent not only to the hollow area but also to the outer periphery, the total amount of hot air required increases, resulting in poor drying efficiency.

An object of the present invention is to provide a drying device for hollow wood that can solve the problems of the prior art.

(D) Means for Solving the Problems The present invention forms a wood storage chamber in the drying chamber, which is comprised of a front partition wall, a rear partition wall, and an intermediate ceiling wall, and a plurality of hollow wood pieces are stacked in the wood storage chamber. A hot air inflow hole and a hot air outflow hole are provided in the front and rear partition walls of the shaft wood storage room, respectively.
A hollow piece of wood characterized in that a hot air inflow hole is communicated with a front opening of a hollow part provided in the hollow piece of wood, and a hot air outlet hole is connected with an outflow opening of the hollow part and a natural heating atmosphere space formed in a wood storage chamber. This relates to a drying device.

(E) Function With the above configuration, hot air is sent into the hollow wood through the hot air inflow hole, thereby drying the hollow wood from the inside. On the other hand, a part of the hot air that flows out from the hot air outflow hole and accumulates in the drying chamber naturally flows into the wood storage room through the hot air outflow hole again and fills around the outer periphery of the hollow wood, forming a naturally heated atmosphere space. , drying the hollow wood from its outside.

(f) Effects As described above, in the present invention, the outer peripheral part of the hollow wood can be dried at the atmospheric temperature of the wood storage room without using any special means, so the overall structure of the drying device can be simplified and inexpensive. It can be manufactured. It also allows for uniform drying.

(g) Examples Hereinafter, the present invention will be explained in detail based on examples shown in the attached drawings.

Fig. 1 is a front sectional view of a drying device for hollow wood according to the present invention, and Figs. 2 and 3 are Fig. 1 I-work line and
FIG.

In these figures, (1) is a sealed drying room that has a rectangular parallelepiped shape and forms a drying space (A) inside. The intake duct (3) and exhaust duct (4) are installed.

(5) is a wood storage room located in the airtight drying room (1) with front and rear spaces (6) and (7) open at both ends. An intermediate ceiling wall (2) connecting the upper parts of the partial partition wall (8), the rear partition wall (9), and both corner walls (8), (9), and parallel to the ceiling wall (2) of the sealed drying room (1). 10). In addition, hot air inflow holes (
8a) and a hot air outflow hole (9a).

(11) is a plurality of hollow timbers stored in several tiers in the timber storage chamber (5), and each tier of hollow timbers (11) is supported vertically apart from each other by a support shelf (11C). There is. Moreover, each hollow timber (11) consists of a hollow part (11a') bored inside and an outer peripheral part forming the outer periphery of the hollow part (11a').

As shown in Figure 1, the - side end faces of the hollow timbers (11) are located at a certain distance from the front partition wall (8) of the timber storage chamber (5), and cover the end faces of these hollow timbers (11). A flexible heat-resistant film (12) made of synthetic resin or non-combustible woven fabric is disposed in the state.
2) and the front partition wall (8) gate, an air volume adjustment space (13) is formed.

In addition, in FIGS. 3 to 5, (14) is a rectangular film fixing plate, and the fixing plate (14) is a hollow wood (14).
The heat-resistant film (12) can be fixed to the hollow wood (11) by nailing the end face of the heat-resistant film (12) with a fixing nail (15).

(16) is a central opening provided in the center of the film fixing plate (14), and the central opening is connected to the hollow wood ( It communicates with the hollow part (11a) of 11).

With this configuration, the hot air flowing into the air volume adjustment space (13) can be sent only into the hollow part (11a) of the hollow wood (11), and by adjusting the diameter of the inflow opening (17), the hot air can be The amount, ie, dryness, can be adjusted.

Also, the hollow wood (1) supported by the support shelf (11c)
1) have different diameters, and their placement positions also change for each drying operation. Therefore, the position of the hot air blower opening of the hollow wood (11) also changes for each drying operation, but in this example, By using a flexible heat-resistant film (12) and a film fixing plate (14), ff11 can be adjusted easily, quickly and accurately by simply drilling an inlet opening (17) in the heat-resistant film (12). The space (13) can be communicated with the hollow part (11a) of the hollow wood (11), and all the hot air can be sent into the hollow part (11a).

Note that instead of the configuration shown in FIGS. 4 and 5, a sleeve (
19) through the heat-resistant film (12) and insert the hollow wood (
A similar effect can be obtained by inserting it into the hollow part (11a) of 11).

Moreover, in FIG. 1, (20) is a heat source such as an electric heater disposed in the rear space (7) of the sealed drying chamber (1), and hot air can be generated by the heat source.

On the other hand, (21) is an air supply installed in a hot air supply path (22) formed between the ceiling wall (2) of the sealed drying room (1) and the intermediate ceiling wall (10) of the wood storage room (-5). This is a hot air blowing device such as a fan.

Next, the drying operation of hollow wood using the above-mentioned wood drying apparatus will be explained.

First, a large number of hollow timbers (11) are stored in multiple stages in the timber storage chamber (5) of the drying room (1). Next, the previously installed heat-resistant film (12) is fixed by nailing a film fixing plate (14) having a central opening (16) to the inflow opening end of the hollow wood (11) using fixing nails (15). , tightly connected to the hollow wood (11). The heat-resistant film (
An inflow opening (17) is bored in 12) by a necessary drilling means, and the wind adjustment space (13) is communicated with the hollow part (11a) of the hollow wood (11).

The fresh air is then heated by a heat source (20) to generate hot air. At the same time, the hot air supply device (21) is driven to supply hot air to the hot air supply path (22>, the hot air flow opening (8a), and the W
The hollow wood (11) is forcibly fed into the hollow part (11a) of the hollow wood (11) through the A amount adjustment space (13) and the inflow opening (17) provided in the heat-resistant film (12). Dry from the inside. In the above process, the hot air is forced into the hollow wood (11) by the hot air delivery device (21), so the amount of hot air passing through can be increased and the drying time can be shortened. Furthermore, the occurrence of cracks in the outer peripheral portion (1 lb) of the hollow wood (11) can also be prevented.

In addition, an air volume adjustment space (13) is provided in the front part of the hollow wood (11).
), the wind speed can be made uniform over the entire cross section of the wood storage chamber (5), and all hollow wood (11)
It can be dried under a uniform condition.

In addition, an air volume adjustment space (13) is provided in the front part of the hollow wood (11).
), the wind speed can be made uniform over the entire cross section of the wood storage chamber (5), and all hollow wood (11)
It can be dried under a uniform condition.

In addition, the hot air flowing out from the rear part of the hollow timber (11) is removed from the hot air outlet hole (9) provided in the rear partition wall (9) of the timber storage chamber (5).
a) flows out to the outside of the wood storage chamber (5), but a part of it flows back into the wood storage chamber (5) through the hot air outflow hole and fills the outer peripheral layer of the hollow wood (11). to form a natural heating atmosphere space (23), and hollow wood (1
1) can be dried from the outside.

By drying the hollow wood (11) from the inside and outside in this manner, the drying time can be further shortened and the crack prevention effect can be further improved.

Furthermore, the hot air from the drying process flowing out of the wood storage room (5) is reheated by the heat source (20), and the hot air is reheated by the heat source (20).
) can be supplied again to dry the hollow wood (11), so the amount of heat used can be significantly reduced compared to the case where fresh air is heated from the beginning.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional front view of a drying device for hollow wood according to the present invention, Figs. 2 and 3 are arrow views taken along lines I-I and -■ in Fig. 1, and Fig. 4 is a heat-resistant film. FIG. 5 is an enlarged front view of the mounting structure, FIG. 5 is a sectional view taken along the line ■--■ in FIG. 4, and FIG. 6 is an explanatory diagram of another modification of the heat-resistant film mounting structure. In the figure: (1): Closed drying room (2): Ceiling wall (3): Intake duct (4): Exhaust duct (5) Two wood storage rooms (6): Front space (7): Rear space (8 ): Front bulkhead (9): Rear bulkhead (10): Intermediate ceiling wall (11): Hollow wood (12): Heat-resistant film (13): Air volume adjustment space (14): Film fixing plate (15): Fixed Nail - (16): Central opening (17): Inflow opening (18): Inflow opening (19) Nice sleeve (20): Heat source (21): Hot air delivery device (22): Hot air delivery path (23): Natural heating atmosphere space

Claims (1)

[Claims] 1) A wood storage room consisting of a front partition wall, a rear partition wall, and an intermediate ceiling wall is formed in the drying room, and a plurality of hollow wood pieces are stored in a stacked state in the wood storage room, and the front and rear parts of the wood storage room are A hot air inflow hole and a hot air outflow hole are provided in each partition wall, and the hot air inflow hole communicates with the front opening of the hollow part provided in the hollow wood, and the hot air outflow hole is formed in the outflow opening of the hollow part and the wood storage room. A hollow wood drying device characterized by communicating with a heating atmosphere space.