JPH0554946U - Agricultural and livestock ventilation duct - Google Patents

Abstract

(57) [Summary] [Purpose] This is a ventilation duct for uniformly heating and cooling the inside of the house. [Composition] The air duct 10 comprises an inner bag 12 and an outer bag 14. The inner bag 12 has a large diameter hole 12a, and the outer bag 14 has a small diameter hole 14a. The air sent from the fan 20 in the duct 10 is sent from the hole 12a to the gap 18 between the inner bag 12 and the outer bag 14, and a part of the air is blown into the house through the hole 14a. Since a part of the supplied air stays in the gap 18, it is possible to prevent the temperature change of the air sent in the duct 10, for example, the cooling of warm air, and to uniformly heat the inside of the house.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an agricultural and livestock ventilation duct, and more particularly, to an agricultural and livestock ventilation duct that can uniformly blow air of an appropriate temperature from each part of the duct into a house.

[0002]

[Prior Art]

 In farms and livestock farms such as pig houses, chicken houses, and greenhouses, it is required to heat or blow air to keep the room at a specified temperature. Fans and air ducts are used to perform such heating and air blowing. That is, warm air or cold air is fed into the air duct by a fan, and is blown out from a large number of nozzles provided at predetermined intervals in the length direction of the air duct to supply warm air or cold air into the house. In this way, air is blown from the multiple nozzles provided in the air duct to perform heating or air blowing, so that air is evenly supplied to each position in the length direction of the air duct, and heating is performed inside the house. It is possible to prevent it from being biased to a specific part of the.

[0003]

[Problems to be solved by the device]

 However, when heating is performed using such a ventilation duct, for example, warm air passing through the ventilation duct is affected by cold air inside the house and is cooled by the cool air around the ventilation duct. Therefore, the temperature of the air sent in the air duct gradually decreases depending on the distance sent, and the air blown out of the air duct at a position far from the fan can maintain the temperature required for heating. Can not. Therefore, there is a problem that it is impossible to uniformly heat the inside of the house.

On the contrary, in the case of blowing the cool air, since the temperature of the air sent in the blowing duct rises, it is not possible to blow the air uniformly.

An object of the present invention is to solve the above problems and provide a ventilation duct for agricultural and livestock products capable of uniformly supplying air to each part in a house.

[0006]

[Means for Solving the Problems]

 According to the present invention, an inner bag member through which air to be supplied passes and an inner bag member in an agricultural and livestock ventilation duct for blowing air of a desired temperature to a predetermined position in a farm and livestock house. The outer bag member is disposed outside the inner bag member, and the inner bag member is provided with a hole at a portion where the outer bag member is arranged, and the air in the inner bag member passes between the inner bag member and the outer bag member through the hole. Is supplied to the gap.

[0007]

【Example】

 Next, an embodiment of the ventilation duct for agricultural and livestock production according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a schematic cross section of a first embodiment of a ventilation duct for agriculture and livestock according to the present invention. As shown in the figure, the duct 10 is formed by a double structure of an inner bag 12 and an outer bag 14. The inner bag 12 is provided with a large number of holes 12a at predetermined intervals, and the outer bag 14 is provided with holes 14a at positions corresponding to the holes 12a of the inner bag 12. The hole 14a provided in the outer bag 14 is formed smaller than the hole 12a provided in the inner bag 12.

The inner bag 12 and the outer bag 14 are both formed of a flexible material such as a synthetic resin film. Therefore, the duct 10 constituted by the inner bag 12 and the outer bag 14 expands and contracts depending on the presence or absence of air supply from the fan 20.

As shown in FIG. 5, for example, this duct 10 is arranged in a house for agricultural and livestock products along the longitudinal direction of the house, and is supplied with warm air or cold air from one end by a fan 20. When air is sent into the inner bag 12, this causes the inner bag 12 and the outer bag 14 to inflate, and at the same time, air is blown from the hole 12a of the inner bag 12 into the gap 18 between the inner bag 12 and the outer bag 14. Part of the air blown into the gap 18 between the inner bag 12 and the outer bag 14 is blown into the house 30 through the hole 14a of the outer bag 14 as shown in FIG.

However, since the hole 14 a of the outer bag 14 is smaller than the hole 12 a of the inner bag 12, a part of the air blown into the gap 18 between the inner bag 12 and the outer bag 14 will pass through the hole 14 a of the outer bag 14. It stays in the gap 18 without being blown through. Thus, the air passing through the inner bag 12 is sent without contacting the air around the duct 10 by the air remaining in the gap 18 between the inner bag 12 and the outer bag 14. Change can be prevented.

For example, when warm air is sent to heat the inside of a house, the conventional duct does not have the double structure as described above, so the warm air sent in the duct depends on the length of the sent duct. It was cooled by the cold air inside the house that came into contact with the air conditioner, and when it was blown away from the fan, it did not have a sufficient temperature. On the other hand, according to the duct of the present embodiment, the air passing through the inside of the inner bag 12 is prevented by the air remaining in the gap 18 between the inner bag 12 and the outer bag 14 as described above. Since it is possible to prevent contact with the hot air, it is possible to prevent the warm air sent in the duct 10 from being cooled. Similarly, when the cool air is blown, it is possible to prevent the cool air sent in the duct 10 from being heated. Therefore, it is possible to uniformly cool and heat the inside of the house.

Further, according to the duct 10, the inner bag 12 and the outer bag 14 have flexibility, so that the duct 10 can be formed by merely covering the inner bag 12 with the outer bag 14, and therefore the manufacturing is easy.

FIG. 2 shows a schematic cross section of a second embodiment of the agricultural and livestock ventilation duct according to the present invention. In this duct 10, the inner bag 12 is provided with nozzles 12b for blowing air at predetermined intervals, and holes 12a are provided between the nozzles 12b. The outer bag 14 is provided with a hole 14a having the same diameter as the nozzle 12b at a position corresponding to the nozzle 12b of the inner bag 12.

When the duct 10 is used, the outer bag 14 is attached to the inner bag 12 so that the nozzle 12b of the inner bag 12 and the hole 14a of the outer bag 14 are aligned with each other. Then, the inner bag 12 and the outer bag 14 are fixed by the band 16 in the vicinity of the nozzle 12b.

When air is sent from the fan into the duct 10, the air is blown out through the nozzle 12 b and the hole 14 a, and is also sent to the gap 18 between the inner bag 12 and the outer bag 14 through the hole 12 a of the inner bag 12. The air sent to the gap 18 between the inner bag 12 and the outer bag 14 stays in this gap 18 because there is no outlet. By the air remaining in the gap 18 between the inner bag 12 and the outer bag 14 in this way, the air passing through the inner bag 12 is sent without coming into contact with the air around the duct 10. Can be prevented.

Further, in the case of this embodiment, since the air is blown from the nozzle 12b, it is possible to control the blowing of the air in a desired direction.

FIG. 3 shows a schematic cross section of a third embodiment of the agricultural and livestock ventilation duct according to the present invention. This duct 10 has the same structure as that shown in FIG. 2, and the one shown in FIG. 2 fixes the inner bag 12 and the outer bag 14 with the band 16 in the vicinity of the nozzle 12b, whereas In the embodiment, the inner bag 12 and the outer bag 14 are thermally bonded by heat sealing near the nozzle 12b. Therefore, since the inner bag 12 and the outer bag 14 are bonded together in advance so that the nozzle 12b of the inner bag 12 and the hole 14a of the outer bag 14 are aligned with each other, as in the embodiment of FIG. It is not necessary to attach the inner bag 12 and the outer bag 14 at the time of use. The other structure is the same as that shown in FIG.

FIG. 4 shows a schematic cross section of a fourth embodiment of the agricultural and livestock ventilation duct according to the present invention. This duct 10 comprises a long inner bag 12 covered with a number of short outer bags 14 and fixed by a band 16. The inner bag 12 is provided with a nozzle 12b at a position where the outer bag 14 is not covered, and a hole 12a is provided at a position where the outer bag 14 is covered.

Also in this embodiment, the air blown out from the hole 12a of the inner bag 12 stays in the gap 18 between the inner bag 12 and the outer bag 14, so that the air passing through the inner bag 12 is the air around the duct 10. It is possible to prevent the temperature from being changed by being sent without coming into contact with the pipe and passing through the duct 10.

In the above embodiment, a flexible material such as a synthetic resin film is used as the material for the inner bag 12 and the outer bag 14, but the inner bag 12 and the outer bag 14 are The material is not limited to this, and any other material, for example, a material having rigidity, can be used, and the inner bag 12 and the outer bag 14 can be attached by a known attachment means depending on the material. ..

In the above embodiment, the case where the fan is installed at one end of the duct to supply the air has been described. However, the duct of the present invention has fans installed at both ends and blows air by both fans. It can also be used when

Further, the present invention can be applied to the case where CO ₂ gas is supplied as warm air or cold air in a greenhouse, for example.

[0024]

[Effect of the device]

 According to the blower duct of the present invention, the duct has a double structure of an inner bag and an outer bag, and since the hole is formed in the inner bag, a portion of the supplied air is not separated from the inner bag and the outer bag. It is possible to prevent the temperature of the air supplied through the duct from changing. Therefore, it is possible to evenly heat and cool the inside of the house or supply the necessary air.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a first embodiment of a ventilation duct for agricultural and livestock products according to the present invention.

FIG. 2 is a schematic cross-sectional view showing a second embodiment of the agricultural and livestock ventilation duct according to the present invention.

FIG. 3 is a schematic sectional view showing a third embodiment of the agricultural and livestock ventilation duct according to the present invention.

FIG. 4 is a schematic cross-sectional view showing a fourth embodiment of the agricultural and livestock ventilation duct according to the present invention.

FIG. 5 is a view showing a use state of the ventilation duct for agricultural and livestock production according to the present invention.

[Explanation of symbols]

 10 Blower Duct 12 Inner Bag 12a Hole 12b Nozzle 14 Outer Bag 14a Hole 16 Band 18 Gap 20 Fan 30 House

Claims (4)

[Scope of utility model registration request] 1. An inner bag member through which supplied air passes in an agricultural and livestock ventilation duct for blowing air of a desired temperature to a predetermined position in a farm and livestock building, and the inner bag member. An outer bag member disposed outside of the inner bag member, wherein the inner bag member has a hole formed in a portion where the outer bag member is arranged, and the air in the inner bag member passes through the hole. And a ventilation duct for agricultural and livestock products, which is supplied to a gap between the outer bag member and the outer bag member. 2. The duct according to claim 1, wherein the outer bag member is arranged so as to cover substantially the entire inner bag member, and the outer bag member has a hole smaller in diameter than the hole of the inner bag member. A ventilation duct for agricultural and livestock production, characterized in that air is blown into the house through a hole provided in the outer bag member. 3. The duct according to claim 1, wherein the outer bag member is disposed so as to cover substantially the entire inner bag member, and is mounted on the inner bag member at predetermined intervals. A ventilation duct for agricultural and livestock production, characterized in that the air in the inner bag member is blown into the house through a nozzle provided in the section. 4. The duct according to claim 1, wherein the outer bag member is composed of a plurality of members that cover the inner bag member at a predetermined interval, and the inner bag member is covered with the plurality of outer bag members. A ventilation duct for agriculture and livestock, characterized in that a hole is provided in each part and a nozzle is provided in a part that is not covered by the plurality of outer bag members.