JPH0452491A - Out-door installation grain drying machine utilizing solar heat - Google Patents

Abstract

PURPOSE:To provide an energy saving type grain drying machine by employing a cover structure for covering the front surface of a drying machine body as a light introducing plate, the covering structure being separated over an air flow passage communicated to a combustion part of the drying machine, and opening an air intake communicated with the air flow passage at a higher position. CONSTITUTION:A covering structure 2 is constructed using a weather resistant plate material to have good air tightness and be fast in order to cover the entire surface of a drying machine 1, and captures thermal energy released from the drying machine 1. An air intake 5 is provided at a higher position, and fresh air taken in is supplied over an air flow passage 4 to a combustion part 3 of the drying machine 1 as combustion air, and the whole or part of the covering structure 2 is made transparent to heat the fresh air taken in from the air intake 5 with thermal energy of solar light. When the part is made transparent, a lightening window is constructed with a tightening plate 6, and the drying machine 1 and the covering structure 2 are improved in their thermal energy absorption performance by subjecting the drying machine to black painting.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a dryer for drying grains such as rice and wheat, and particularly relates to an improvement in an all-weather type outdoor grain dryer.

Prior Art and Problems The present inventor has proposed an all-weather type outdoor grain dryer that is an improved version of the indoor grain dryer (see Japanese Utility Model Publication No. 1-153490).

This outdoor grain dryer has a structure in which the material receiving part is covered by an upper cylinder chamber, and the heating part and dry material discharge part are covered by a lower cylinder chamber, so drying work can be carried out without being affected by the weather. This has the advantage of being able to eliminate the disadvantages of the indoor grain dryer.

However, this outdoor grain dryer has a material receiving section,
Since the heating section and drying material discharge section are partially covered, the thermal energy used for drying is wasted from the uncovered exposed section, making this type of dryer an energy-saving type. We found that there is room for improvement.

The present invention was made based on this knowledge, and aims to provide an energy-saving outdoor grain dryer with the aim of recovering heat energy that was wasted and making new use of solar heat. With the goal.

Means for Solving the Problems The means taken by the present invention to achieve the above-mentioned object is to provide a cover that covers the entire surface of the dryer body, separating an air flow passage communicating with the combustion section of the dryer body, and The air intake port that communicates with the air flow path is opened at a high position, and the covering body is constructed from a light-trapping plate.

Thermal energy emitted from the main body of the dryer is prevented from dissipating to the outside by the covering, warms the external air taken in from the air intake port of the covering, and flows through the air flow path to the combustion section. be included. The external air is also heated by the thermal energy of the sunlight reflected by the lighting plate, and is taken into the combustion section through the air flow path.

The dryer main body 1 has a grain drying path and a grain cooling section (not shown) inside, and the material received from the material receiving section 7 in the upper part passes through the grain drying path and the grain cooling part to the dry material discharge in the lower part. This is a well-known configuration in which the material is dried and cooled while falling toward the section 8 (see the above-mentioned published utility model publication). The structure of the grain drying path and the grain cooling section may also be a well-known structure (see, for example, Japanese Patent Publication No. 42-5165). The dryer main body 1 has a material receiving section 7 at the top, and the material receiving section is composed of a charging distributor 9, a charging tube 10 having an internal screw conveyor for loading materials, etc., for carrying up the materials. A charging cylinder 10 is connected to a conveying base 11 in which a packet elevator is installed, and the material is transferred from the packet elevator to the screw conveyor, and the material is transferred to a charging distributor 9.
Configure it so that it is distributed in a distributed manner. Dryer body 1
has a combustion section 3 in the lower part, and the combustion section is composed of a burner 12, a hot air generating furnace 13, etc. that communicates with the burner, and a blower tube 1 that communicates with the grain drying path in the dryer main body 1.
4 is connected to a hot air generating furnace 13 to supply hot air for drying into the grain drying path. The dryer main body 1 is
It has a dry material discharge section 8, which is composed of a discharge hopper 15 and a discharge tube 6 in which a screw conveyor for carrying out the dry material is installed, and the dry material that falls through the grain drying path and the grain cooling section. The material is discharged from the discharge hopper 15 into the carry-out tube 16, and from the discharge tube, the dry material is carried out to the carry-out base 17, which is equipped with a packet conveyor for carrying out the dry material, and the dry material is transported to a predetermined work place at the carry-out base. (e.g., transport vehicle, weighing container, etc.). The covering body 2 is a structure for covering the entire surface of the dryer body 1, and is made of a weather-resistant plate material (for example, a corrugated steel plate with anti-rust coating, a corrugated steel plate with anti-rust coating, a transparent synthetic resin corrugated plate, a synthetic resin corrugated plate, etc.). It is bolted to a base material 18 such as C-section steel or cross-section section steel, and uses caulking material at the joint to ensure airtightness and firmness, and captures the thermal energy released from the dryer main body 1. , the air intake port 5 is opened at a high position. The covering 2 is attached to the dryer main body 1
A bay window type ventilation window 19, which is well known in the above-mentioned Public Utility Model Publication, is configured to be able to be opened and closed at the lower opposing parts (front side and back side in the drawing) corresponding to the combustion section 3 of the The structure is such that drying work can be performed while preventing rain from blowing into the interior by adjusting the amount. The structure of the bay window type ventilation window 19 itself, the structure for opening and closing, etc. may be the same as the ventilation window of the above-mentioned published utility model publication. The covering body 2 has an air intake port 5 at a high position, and the intake port is constructed in the form of an opening/closing window, and can be opened and closed by using the well-known manual or electric opening/closing means from the above-mentioned published utility model publication. And the amount of opening can be adjusted freely. The covering 2 is not closely connected to the dryer main body 1, but has an air flow passage 4 through which external air taken in from the air intake port 5 is taken into the combustion section 3 of the dryer main body 1 as combustion air. During the drying operation, the interior of the covering 2 becomes negative pressure, and external air is taken in from the air intake port 5 and the ventilation window I9, and is supplied to the combustion section 3 as combustion air. do. The covering 2 is
In order to heat the external air taken in from the air intake port 5 with the thermal energy of sunlight, the entire structure may be constructed as a transparent structure, or
Alternatively, a portion thereof may be configured to have a transparent structure. When the entire covering body 2 is transparent, it is constructed using a lighting board made of a transparent synthetic resin corrugated plate as a weather-resistant board material, but when it is partially transparent, it is constructed by using one side of the south side or the south side, Lighting windows are constructed using lighting plates 6 such as transparent plate glass and transparent synthetic resin plates on three sides, the east side and the west side. Therefore, the dryer main body 1 and the covering body 2 are coated with a coating having excellent heat absorption properties (
For example, when the covering body 2 has a partially transparent structure, applying a similar coating to surfaces other than the lighting plate 6 to absorb the thermal energy from sunlight. It is possible to improve performance. Although not shown, an entrance/exit for workers is provided at the top of the cover 2 so that maintenance of the dryer main body 1 can be carried out.

In the figure, reference numeral 20 denotes a window covering for preventing heat energy from dissipating to the outside, which is composed of a freely openable blind or similar curtain provided inside the lighting plate 6 that makes a part of the covering 2 transparent. , close after sunset. The opening/closing means for the window cover 20 may be of the same construction as the manual or electric type known in the above-mentioned published utility model publication (see FIG. 5).

Since the covering body 2 is configured as described above to cover the entire surface of the dryer main body 1, it goes without saying that it becomes an all-weather type grain dryer, but during drying work, grains are released from the dryer main body 1. External dissipation of thermal energy is prevented by the covering 2, and external air taken in from the air intake port 5 flows through the air flow path 4.
While circulating, it is heated by the heat energy released above, and
It is also heated by the thermal energy of the sunlight received from the daylighting plate 6 and taken into the combustion section 3.

In the above embodiment, as is clear from the illustrated example, the transport tower 11
Although this is a configuration in which the unloading tower 17 is exposed, this configuration may be changed to other configurations shown in FIGS. 6 to 10. Another example is the transport tower 11. In addition to exposing the unloading tower 17, the exhaust duct 21 communicating with the grain drying path inside the dryer main body 1 is exposed. The exhaust duct 21 has an exhaust fan (not shown) inside, and when the fan is operated, the inside of the covering 2 becomes negative pressure through the grain drying path in the dryer main body 1, the combustion section 3, etc.

Effects of the Invention Since the present invention is configured as described above, during drying work, the thermal energy emitted from the dryer body is prevented from dissipating to the outside by the covering, and is taken in through the air intake of the covering. While the external air is flowing through the air flow path, it is heated by both the emitted heat energy and the solar heat energy captured by the daylight plate, and is taken into the combustion section.

Therefore, by effectively utilizing the thermal energy and solar thermal energy emitted from the dryer main body to warm the combustion air, fuel consumption can be saved to a considerable extent, resulting in an energy-saving grain dryer.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view showing the south side of the example, FIG. 2 is a partially vertical side view showing the east side, and FIG. 3 is a partial side view showing the north side. Longitudinal rear view, 4th
Figure 5 is a partially cutaway side view showing the west side, Figure 5 is a perspective view showing the lighting panel, Figure 6 is a front view showing the south side of another example, and Figure 7 is a side view showing the east side. 8 is a partially longitudinal rear view showing the north face, Fig. 9 is a partially cutaway side view showing the west face, and Fig. 10 is a perspective view showing the mounting part of the covering. . In the figure, 1...Dryer main body 2...Coating 3...Combustion section 4...Air flow path 5...Air intake port 6...Lighting plate Patent applicant Hokuto Koki Co., Ltd. Diagram

Claims (2)

[Claims] (1) Consisting of a dryer main body and a covering covering the entire surface of the dryer main body, the covering is separated from an air flow passage communicating with the combustion section of the dryer main body, and air is communicated with the air flow passage. An outdoor grain dryer that utilizes solar heat and has an intake in a high position. (2) Consisting of a dryer main body and a covering covering the entire surface of the dryer main body, the covering is separated from an air flow passage communicating with the combustion section of the dryer main body, and air is communicated with the air flow passage. An outdoor grain dryer that utilizes solar heat and is configured with an intake port opened at a high position, and further has a cover that is entirely or partially comprised of a lighting board.