JPS5871817A - Cooling apparatus in silo - 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 The present invention relates to a cooling device for cooling grains etc. stored in a silage. It is desirable to store the grain at a low temperature because it is necessary to prevent the growth of mold and bacteria, and to suppress the growth of mold and bacteria as much as possible. As a cooling device, one is known that discharges cold air processed by an air conditioner or the like into the inside of the silo from an opening at the top or bottom of the silo. Well,
Since the grains are cooled by passing the cold air through minute gaps formed between the grains, the pressure loss of the cold lL is extremely large, and therefore a blower with an extremely large static pressure must be used. The heat of compression increases,
As a result, there was a drawback in that a refrigerator having a relatively large refrigerating capacity was required. Furthermore, since a blower with a large static pressure and a refrigerator with a relatively large cooling capacity are operated, running costs are high.

Furthermore, in order to suppress the increase in refrigeration load due to heat of compression, etc., it is necessary to suppress pressure loss as low as possible, which requires slowing down the air blowing speed, which has the disadvantage of increasing the time required for cooling. Furthermore, when trying to cool multiple silos at once, a single cooling device lacks the air volume and cooling capacity, and it is difficult to cool them uniformly.
For this reason, a cooling device is required for each silo, which has the disadvantage of increasing the scale of the equipment.◎ The present invention was made in view of the above circumstances. can be cooled, and can also shorten the time required for incubation,
Furthermore, it is an object of the present invention to provide an in-wallet cooling device that can cool even a plurality of wallets with small equipment.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a silo, and an input port (not shown) is provided in the upper part of the silo, and a hopper 2 is provided in the lower part of the silo. Above the seal is a circulation duct) (ventilation duct) 8
is provided.

A feeder 47 is provided upstream from the sial of the duct 8. Further, a discharge pipe 8 is provided 1 ml downstream of the duct 8 with respect to the silo l.

Note that the intersection between the suction pipe 7 and the duct 8 and the discharge pipe 8
A damper or the like (not shown) is provided at the intersection of the duct 8 and the duct 8.

At the center of the inside of the silo, a heat pipe 9 has one end projected from the top of the silo and exposed inside the duct 8, and its lower end extended to the vicinity of the bottom of the silo IO, so that it is vertically connected. 0 heat pipe 9 placed
#'i heat dissipation iron 10 is placed in the exposed part of the duct 8 at the outer edge of the
Umbrella-shaped fins 11 of ore cooling guards are provided at a portion located inside the silo I in part I, expanding downward. In addition, this umbrella-shaped fin also serves as a classification prevention device, so it can be classified into other types.

Next, we will explain the operation of the above-mentioned ring cooling device 17). When the outside air temperature is appropriately lower than the temperature inside the silo L1 and the L1 air blower is operated, the outside air is sucked into the duct through the suction pipe 7. ) 8 and is supplied to the upper part of the heat pipe 9 via this inlet air duct 8. Then, the cold heat of the incoming air is transferred to the fin lO and the heat pipe 90.
is transmitted to the upper part of the heat pipe 9 via the upper ta surface,
After being transmitted to the lower part of the heat pipe 9, it is transmitted into the silo l via the fins 11 and the lower surface of the heat pipe 9, and the grain inside the silo l is cooled. On the other hand, after passing through the upper part of the heat Sive 9, the υ air is discharged into the atmosphere through the discharge pipe 8. Incidentally, when cooling the grain as described above, a part of the air after passing through the heat pipe 9 and the upper part may be passed through the duct 8 [11].

Next, when the outside air temperature is extremely lower than the temperature inside silo L, such as in winter, the inside of duct B is The outside air flowing into the heat pipe 9 is appropriately added to the outside air by the heater 6, and after passing through the heat pipe 9v upper S, the -g of the air is circulated through the duct 8.

In other words, the air supplied to the suction 111 of L = 6 is a mixture of outside air and return air (circulated air), and the return air has been heat exchanged with the heat pipe 9. Since it is air, it is appropriately hotter than the outside air. Therefore, the air supplied to the air blower unit 60 is appropriately hotter than the outside air temperature, and energy saving can be achieved by that much. If so,
The air volume 111w1 unit may be operated to prevent outside air from flowing into the duct 8, and only the air existing in the duct B may be circulated. In other words, in this case, the air after passing through the upper part of the heat pipe 9D circulates in the duct B and is cooled by the atmosphere through the duct B itself when returning to the blower unit 6D@containing side, so the return air flows into the silo. The temperature in the silo will never be higher than the temperature in the silo, so the grain in the silo can be cooled only by this return air. Note that, as in the daytime in summer, the outside air temperature is higher than the concentration in the silo. When the feeder ILllI* is operated, no heat exchange takes place in the upper part of the heat pipe 9, and therefore there is no inconvenience such as the grain in the silo I being adversely heated. In the summer, the inside of the altar may be cooled using the outside air at night. Furthermore, if the grain stored in the grain is very susceptible to corrosion and needs to be cooled even during the daytime in summer, it would be a good idea to forcefully cool the supplied air using a refrigerator! stomach.

As mentioned above, the dangerous air that cools the grain in the silo 1 only passes through the duct 3, and therefore the duct 8
The pressure loss when passing through the air is extremely small, so the blower number only needs to be one with extremely low static pressure, and there is no need to take into account the heat of compression, which makes it possible to use a refrigerator even in the summer. Grain inside the silo can be sufficiently cooled simply by using outside air at night.

In addition, since the air for cooling the grains in the duct 8 only passes through the upper part of the heat pipe 9 in the duct 8, the friction loss is extremely small. Therefore, even if the air blowing speed is increased somewhat, the pressure loss is small. It is not very large, therefore air can be blown at a relatively high speed, and the heat vise 9
transfers heat at an extremely high rate, so in the cooling area of Saizono 1, we do not use a refrigerator as mentioned above, and in addition, we use a transmission IL41 with a lower static pressure than before. 1 In addition, since the heat pipe 9 can be used semi-indefinitely without using any special power, running costs can be greatly reduced.In addition, if the duct 8 is installed across the silo l,
A plurality of rhinoceroses v11 can be cooled at once with small equipment.

As explained above, according to the in-mouth cooling device of the present invention, the lower end of the heat pipe is disposed in the inside of the side guard, and the upper end thereof protrudes from the upper part of the side. Send 1lLl to the part
l! 1: Since the air is blown through more ventilation channels, the inside of the silo can be cooled with only a small blower without using a refrigeration wA.1 Also, the cooling time can be shortened, and running costs can be reduced ◎

[Brief explanation of the drawing]

The drawing is a schematic partially longitudinal sectional view Il1 showing an embodiment of the in-mouth cooling device according to the present invention. ■... Circulation duct) (ventilation duct), i... ILIi, 9... heat pipe. Applicant: Shimizu Corporation Kinsha

Claims (1)

[Claims] A cold tomato pipe (9) having one end protruding from the top of the silo (1) and the other end disposed within the silo (1), and a portion of the cold toto pipe (11) protruding from the top of the silo (1). An air blower (4) connected to the ventilator (4) via a ventilation passage (1).