JPS6117026Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a wall structure that improves response to the temperature conditions of a silo.

For example, when storing grain in a silo for a long period of time, it is necessary to prevent the loss of internal nutrients due to grain respiration, and to suppress the growth of mold and bacteria that cause quality deterioration as much as possible. It is necessary to keep the temperature inside the silo as low as possible. By the way, there are two factors that cause the temperature inside the silo to rise: heat transferred from the outside of the silo to the inside due to outside temperature, solar radiation, etc., and heat generated inside the silo due to the respiration of stored grain. be. Therefore, if the walls of the silo are made with good insulation properties, it is possible to reduce the amount of heat transferred from the outside of the silo to the inside when the outside of the silo is hotter than the inside, but the When the inside of the silo is hotter than the outside, it becomes difficult to release the heat generated inside the silo to the outside, and conversely, if the walls of the silo are made to have good heat permeability, the inside of the silo becomes hotter than the outside. However, when the outside of the silo is hotter than the inside, more heat is transferred from the outside to the inside of the silo. There were conflicting conditions, and there were serious problems in the design of the thermal properties of the wall.

This idea was made in view of these points, and in a silo where a heat insulating material is provided on the inner surface of the outer shell plate that becomes the structure, the wall is a heat insulating material provided between the outer plate, the inner plate, and the insulating material between them. By constructing a laminated wall with an air layer sandwiched between the two layers, and by providing a through hole in the insulation material that communicates both air layers, the silo The heat insulating material can prevent the transfer of heat from the outside to the inside of the silo, and on the other hand, if the inside of the silo is hotter than the outside, the heat inside the silo can be effectively dissipated to the outside. The object of the present invention is to provide a silo wall structure that has improved response to temperature conditions.

An embodiment of this invention will be described below with reference to FIGS. 1 to 4.

In the figure, 1 is the wall of the silo, which includes an inner plate 2 made of steel plate facing the inside of the silo, an outer plate 3 made of steel plate facing the outside of the silo, and these inner plates 2 and outer plates 3. and a heat insulating material 4 provided between. The inner panel 2 and the outer panel 3 are parallel to each other and have a self-supporting structure, and have insulating studs (not shown) at appropriate intervals in the continuous direction of the wall, and the distance between the two panels (wall thickness) It also supports a heat insulating material 4 such as a foamed synthetic resin body disposed between the two plates. Air layers 5 and 6 are formed between the heat insulating material 4 and the inner plate 2 and outer plate 3, respectively, and the air layer 5 communicates with the inside of the silo through air holes provided at the bottom of the inner plate 2, and The layer 6 communicates with the atmosphere outside the silo through ventilation holes provided in the upper and lower parts of the outer panel 3, thereby allowing the movement of air inside the silo. thus,
Inner panel 2, air layer 5, insulation material 4, air layer 6 and outer panel 3
constitutes a laminated wall. Further, the heat insulating material 4 is provided with a plurality of through holes (hereinafter referred to as "slits") 7 that slope upward from the inner plate 2 side toward the outer plate 3 side. The slits 7 are pre-drilled in a distributed manner on the surface of the heat insulating material as air passages having a cross section narrower in width than height.

Next, the function of the wall 1 of the silo will be explained. When the temperature inside the silo rises higher than the outside temperature due to the heat of respiration of the grain stored inside the silo, the temperature of the air layer 5 in contact with the inner plate 2 rises as shown in Fig. 2. As a result, an upward air current is generated in the air layer 5 as shown by the broken line arrow.
During this time, the heat carried by the air is blocked by the insulation material 4, but the pressure in the air layer 5 increases, the rising air passes through the slit 7 from above, and the heat flows through the insulation material 4. , flows into the air layer 6.
As a result, the temperature of the air layer 6 rises, and this heat increases the temperature of the outer panel 3, and is dissipated from the outer surface into the atmosphere as shown by the solid arrow, and the rising air is also released from the upper part of the outer panel 3. The internal heat is transferred and exhausted.

Next, when the outside temperature of the silo rises higher than the inside temperature due to outside temperature or sunlight in summer, etc., the air layer 6 in contact with the outer panel 3 as shown in FIG.
The temperature of the air rises, but the heat is blocked by the heat insulating material 4, and even if an upward airflow occurs in the air layer 6 as shown by the broken line arrow, this upward air flow passes through the downwardly sloping slit 7 to the air layer 5. The temperature of the air layer 5 does not rise. That is, it is possible to prevent the inflow of heat due to the temperature difference from the outside to the inside of the silo, and the heat generated inside the silo at this time also continues to be discharged through the slit 7 as in the previous example.

Furthermore, when the temperature outside the silo falls below the temperature inside the silo in winter, etc., the temperature of the air layer 6 in contact with the outer panel 3 falls, as shown in FIG. A downdraft occurs as shown in . At this time, the cold heat is blocked by the heat insulating material 4, but a portion of the downward airflow passes through the slit 7 and flows into the air layer 5. Then, the temperature of the air layer 5 decreases, and the descending air flows down while cooling the inner plate 2, and flows into the silo from the lower part of the air layer 5.
Cold heat is transferred inside (solid arrow), thereby cooling the inside of the silo. At this time, the heat generated within the silo is exhausted from above the silo in the same way as in the example shown in Figure 2, or the upward flow is partially parallel to the downward flow in this example. Heat is discharged or cold is introduced by the action of , or whichever is more dominant.

As explained above, according to the silo wall structure according to this invention, in a silo in which a heat insulating material is provided on the inner surface of the outer shell plate serving as the structure, the wall is provided between the outer plate, the inner plate, and the middle thereof. The silo has a laminated wall structure with an air layer sandwiched between the silo and the insulation material, and a through hole is provided in the insulation material to communicate both air layers, so if the outside of the silo is hotter than the inside. It is possible to prevent the transfer of heat from the outside to the inside of the silo, and on the other hand, if the inside of the silo is hotter than the outside, the heat inside the silo can be effectively released to the outside. have

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the main parts showing an example of the wall structure of the silo according to this invention, and Figs. 2 to 4 are longitudinal cross-sectional views of the main parts shown to explain the function. . 1...Wall body, 2...Inner board, 3...Outer board, 4...
Insulation material, 5, 6... air layer, 7... slit.

Claims (1)

[Scope of utility model registration request] In a silo wall structure consisting of an outer shell plate serving as a structure and a heat insulating material, the plate is composed of an inner plate and an outer plate made of steel plates supported across the thickness of the wall,
The heat insulating material is supported between the inner plate and the outer plate, independently from both, and is supported together with the inner plate and the outer plate by interposing an air layer between the inner plate and the outer plate on both sides. A silo wall structure forming a laminated wall, and further comprising a through hole separately provided in the heat insulating material that slopes upward from the inner plate side to the outer plate side. .