FR2731267A1 - Livestock building air flow augmenting system - Google Patents

Abstract

The system, eg. for a poultry-rearing building, consists of a high-output fan (13) (16000 cu m/hr minimum) which oscillates about a vertical axis. The fan is supported by a bracket (15) which can be mounted on a post fixed to the building, or on a free-standing leg (16) to facilitate its movement, while its oscillation about a vertical axis is governed by a box (17) incorporated in the fan. The aim of the fan is to create a horizontal air flow at an ideal height for the livestock, causing the air at the level of the livestock to move solely by induction, and with no direct contact between the livestock and the air flow. The system can also incorporate mist nozzles to humidify the air flow.

Description

DEVICE FOR INCREASING THE MOTION OF AIR IN THE
LIVESTOCK BUILDINGS
The present invention relates to a device for increasing the movement of air in livestock buildings, particularly of the poultry type.

These buildings designed to optimize the growth of animals, are managed in a very precise way, in order to give the best comfort to the animals which best express their growth potential.

During very hot periods, it is advantageous to increase the air speed at the level of the animals, in order to decrease their feeling of heat.

There are three types of livestock buildings, depending on the type of air renewal
Dynamic buildings have fans for
force entry or extraction of air.

Static buildings use the chimney effect
to provide ventilation.

Natural buildings use the force of the wind as
air renewal element.

The invention which is the subject of this document relates primarily to natural buildings, but it can be used in other types of building or the problem of air speed may arise.

Natural buildings have vertical openings in their side walls to let in the outside wind. These openings are provided with blackout curtains, to adapt the surface of the opening to the needs of the animals, according to the temperature, the wind speed, the humidity of the air, the weight of the animals, their number, etc.

In summer, when it is very hot, the air speed at the level of the animals can be insufficient to renew the vital air for their survival, when the wind outside is too weak.

The device according to the invention makes it possible to remedy this drawback, insofar as it makes it possible to force the movement of air inside when the natural functioning becomes insufficient.

Optionally, the device can be equipped with a misting system to lower the temperature felt by the animals.

The accompanying drawings illustrate the invention.

Figure 1 shows a natural building in good operating conditions, that is to say when the outside wind creates sufficient air movement.

Figure 2 shows a natural building when the wind is too weak, highlighting the problem of poor ventilation.

FIG. 3 represents a natural building under the unfavorable conditions described for FIG. 2 but equipped with the invention.

Figure 4 shows the detail of the invention.

FIG. 5 represents the invention in a fixed position, hung on the side of the building.

FIG. 6 shows the invention equipped with the misting option.

FIG. 7 represents a vertical view of the invention, showing the oscillation around a vertical axis.

Referring to Figure 1, natural buildings consist of several openings in the sides (1), through which air enters the buildings according to the wind speed outside.

The opening of the curtains or blackout hatches (2) of the openings (1) on the sides is proportional to the building's regulation parameters. The air current caused inside the building by the outside wind (3) causes the air induction (4) which creates the movement of air at the level of the animals (5).

Referring to Figure 2, the insufficient wind outside (3) causes a lack of ventilation inside the building with a speed too low to cause the induction (4) of Figure 1. The movement air at animal level (5) is then insufficient or zero, with risk of illness or suffocation.

Referring to Figure 3, the building is now equipped with the invention (6), coupled with a temperature control (7), to start operating when the interior temperature becomes too high. The device in operation causes an air current (8) that by induction (4) generates the movement of air at the level of the animals (5). The height (11) between the device (6) and the ground (12) must be carefully chosen so that the air flow (8) does not reach the animals, while causing a sensitive induction (4) until animal level (5).

Referring to Figure 4, the device consists of a ventilation system (13) of high flow (more than 16,000 m3 / h minimum) fixed by a system oscillating around a vertical axis (14) to the arm of holding (15). The holding arm (15) can either be mounted in a stationary position, for example the representation of FIG. 5, or it can be mounted on a stand (16) to facilitate movement.

The oscillation movement around a vertical axis is provided by the housing (17).

Referring to Figure 5, the device can be fixed to the side of the building, using a holding arm (15), while keeping the oscillation system around a vertical axis (14).

Referring to Figure 6, the device described in Figure 4 is equipped with the misting option consisting of a loop formed by a pipe (18) in front of the device on which are mounted misting nozzles (19) variable number. The position of the misting nozzles (19) must be chosen so that they are in the air flow (8) of Figure 3. The misting crown (18) is connected by a flexible connection (20) to the pipe water inlet.

With reference to FIG. 7 representing the invention seen from above, the oscillation movement around a vertical axis, provided by the box shown (17), makes it possible to increase the ventilation angle (21).

Claims (7)

1) Device for improving the movement of air in livestock buildings, characterized in that it includes a ventilation system (13) of high flow rate (16,000 m3 / hour minimum), printed with a movement of oscillation (21) about a vertical axis. 2) Device according to claim 1 characterized in that the holding arm (15) can be mounted either in a fixed position attached to the building, or fixed on a free leg (16) to facilitate movement. 3) Device according to claim 1 or claim 2 characterized in that the oscillation movement (21) around a vertical axis, is generated by an incorporated housing (17). 4) Device according to any one of the preceding claims, characterized in that it is intended to cause a horizontal air current (8) at an ideal height (11) in order to cause the movement of air (5) at the level of the animals. exclusively by induction (4) without direct contact between the animals and the air flow (8). 5) Device according to any one of the preceding claims, characterized in that it can optionally be equipped with a misting ring consisting of a pipe (18) to which misting nozzles (19) are connected. 6) Device according to any one of the preceding claims, characterized in that the position of the optional misting nozzles (19) must be such that they are at the heart of the air flow (8). 7) Device according to any one of the preceding claims, characterized in that the optional misting nozzles (19) project the mist in the direction of the air flow (8).