JPH08294339A - Air duct for ventilation - Google Patents

Abstract

PURPOSE: To provide an air duct made of a less expensive material and useful for a henhouse. CONSTITUTION: This air duct 1 is made of cloth having a low degree of air permeability or a plastic film and has a round or a roughly round cross section. The lower side of the duct has a number of openings 2 along the longitudinal direction. The air ducts 1 are placed at the upper part of a henhouse in the longitudinal direction parallel to cage lines. The air supplied into the duct by a blower 3 connected to one end or both the ends of the air duct 1 is discharged from the openings 2 downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air duct for blowing air in a poultry house. More specifically, the present invention is
Regarding improvement of a blower air duct arranged above a row of cages stacked in multiple stages or above a passage between cage rows

[0002]

2. Description of the Related Art A large-scale poultry raising facility in which a large number of chickens are stacked in a plurality of stages and are housed in cages partitioned in long rows, and the cage rows are arranged back to back,
To keep chicken's health under good hygiene by keeping the inside of the poultry house clean by removing and removing chicken droppings,
This is a very important issue for poultry farmers. Furthermore, it is necessary to consider reducing the equipment cost for that purpose.

As for the air ducts for ventilation arranged above the rows of cages stacked in a plurality of stages or above the passages between the rows of cages, metal air ducts are often used. As the size of the air duct increases, the manufacturing cost of the air duct also increases, and it has been desired to reduce the cost.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air duct made of less expensive material than conventional air ducts for blast.

[0005]

SUMMARY OF THE INVENTION The purpose is to provide a poultry house with an air duct of circular or nearly circular cross section, which is made of a fabric or plastic film having a low air permeability and has a large number of openings along the longitudinal direction of the lower surface. Is arranged longitudinally above a row of cages or above a passage between cage rows and is fed into the air duct by a blower fan connected to one or both ends of said air duct Air is blown from the multiple openings to the poultry manure below the bottom row of cages through a gap formed between the rear wire nets of the front and rear cage rows, or is supplied into the cage through a passage between cage rows. This can be achieved by an air duct for blowing air according to the invention, characterized in that

In one preferred embodiment of the invention, the multiple openings of the blast air duct each have a similar fabric or plastic film tubular nozzle extending downwards, and in an even more preferred embodiment, these. By attaching a weight in the vicinity of the lower end of the cylindrical nozzle, it is possible to more effectively blow the air from the duct onto the chicken manure directly below the blowing nozzle. When the target is poultry manure, it is possible to effectively blow air to the poultry manure that has been deposited on a belt conveyor that moves in the longitudinal direction or under the floor of a stilt house. .

[0007]

As described above, the air duct for blowing air according to the present invention is made of a cloth or a plastic material having a low air permeability.
Since it is made of a film, it is possible to provide the same operation while being less expensive to manufacture than a conventional metal duct. Further, by connecting a tubular nozzle to each opening of the air duct, it is possible to give directionality to the flow of the air sent out from the multiple openings, in which case a weight is provided near the lower end of the tubular nozzle. By mounting, the action of stabilizing the nozzle in a certain direction is added. Hereinafter, some embodiments of a blower air duct according to the present invention will be described with reference to the accompanying drawings.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In FIG. 1, an air duct 1 of circular cross section made of low air permeability fabric is longitudinally arranged above a long row of cages (not shown), the lower surface of which is at regular intervals. A large number of openings 2 are provided along the longitudinal direction.
A blower fan 3 that takes in outside air and supplies it into the duct 1 at one or both ends (both in FIG. 1) of the air duct 1.
Is connected. If the blower fan 3 is connected to only one end, the other end is closed. The air supplied into the duct 1 by the blower fan 3 is discharged from a large number of openings 2 toward a gap formed between the rear wire nets of the lower front and rear cage rows (not shown), and the air in the lowermost cage row is discharged. It is sprayed on the poultry manure 4 accumulated below, whereby the poultry manure 4 is dried.

However, the duct 1 made of cloth or plastic film is more liable to be deformed than the conventional duct, and the blowing direction of the wind becomes unstable due to the fluctuation of the internal air pressure. 2, a similar thick cloth tubular nozzle 5 is provided in each opening 2.
Is preferably connected. In this case, a weight 6 (an annular weight surrounding the lower end of the tubular nozzle 5 in FIG. 2) is attached near the lower end of the tubular nozzle 5 to fix the direction of the nozzle to further stabilize the wind direction. Can dry chicken manure better.

When the air duct 1 for blowing air according to the present invention is used for drying chicken manure, a part of the air enters the cage due to the air blown out from the opening 2 of the air duct 1, and the air in the cage blows out air. This air flow also promotes proper ventilation in the cage as it is attracted to. Since this effect is enhanced as the air blowing direction becomes more stable, it is more effective to have the tubular nozzle 5 than the opening 2 only and to have the weight 6 than the tubular nozzle 5 only. In a recent poultry house, there is a tendency that the total number of cage rows to be stacked is increased and the overall height becomes higher. One embodiment of a blower air duct suitable for dealing with this is shown in FIG. In this embodiment, short tubular nozzles 5 and long tubular nozzles 5'are alternately attached to each opening 2 of one duct 1, the shorter one for the upper cage row and the longer one for the lower cage row. I am applying for.

[0011]

Since the air duct for blowing air according to the present invention has the structure and operation as described above, it has the following effects peculiar to the present invention. -As a material for the air duct for blowing air, a cloth or a plastic film, which is cheaper than a conventional metal plate or the like, is used, so that the manufacturing cost of the duct can be significantly reduced. -By connecting a similar tubular nozzle made of cloth or plastic film to the opening of the air duct and stabilizing the direction of the air blown out from the opening in a certain direction, the air blowing effect can be further enhanced, and further the cage Venting can also be positively affected because it enters the inside and attracts the air in the cage to create an air flow. This effect is enhanced by attaching a weight near the lower end of the cylindrical nozzle to fix the direction of the nozzle and stabilize the air flow. -In addition to poultry manure drying, an air duct can be used effectively for ventilation inside the cage by placing it above the passageway between the rows of cages.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view and a lateral sectional view of an embodiment of an air duct for blowing according to the present invention.

FIG. 2 is a side view and a cross-sectional view of another embodiment of the air duct for blowing air according to the present invention.

FIG. 3 is a side view of a blast air duct according to the invention suitable for tall cage rows.

[Explanation of symbols]

 1 Air Duct 2 Opening of Air Duct 1 3 Blower Fan 4 Poultry Manure 5 Cylindrical Nozzle of Opening 2 Weight of Nozzle

Claims (5)

[Claims] 1. A circular or nearly circular cross-section air duct (1) made of cloth or plastic film having low air permeability and having a large number of openings (2) along the longitudinal direction of the lower surface is provided above the poultry house. The air supplied into the air duct (1) by a blower fan (3) connected to one or both ends of the air duct (1) in parallel with the longitudinal direction of the cage row. An air duct for blowing air, characterized in that it is discharged downward from the opening (2). 2. A plurality of openings (2) each having a cylindrical nozzle (5) made of a similar cloth or plastic film extending downwards.
The air duct for air blow described. 3. The blower air duct according to claim 3, wherein the cylindrical nozzle (5) has a weight (6) attached near the lower end thereof. 4. The air ducts (1) are arranged longitudinally above a row of cages in which a plurality of layers are stacked, and the air is discharged from a plurality of openings (2) between the rear wire meshes of the front and rear cage rows. The air duct for air blow according to any one of claims 1 to 3, wherein the air duct is directed to a gap formed in the. 5. The air duct (1) is arranged longitudinally above the passages between the cage rows, the exhaust of the air being directed through the passages into the cage rows on both sides. The air duct for ventilation according to claim 4.