JPH0328247Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a ventilation system used for indoor ventilation in livestock houses, poultry houses, greenhouses, etc.

(Prior art) Conventionally, for example, a ventilation system for a livestock barn has a structure in which a ventilation tube that opens into the outside of the barn is attached to the ceiling of the livestock barn, and a fan attached to the ventilation tube blows fresh outside air into the barn. Commonly used. However, this conventional device has the disadvantage that it has a negative effect on the health of livestock because it blows cold outside air directly into the barn during the winter season.

(Problems to be solved by the invention) The purpose of the invention is to provide a ventilation device that can ventilate indoor spaces while alleviating the influence of outside air.

(Means for solving the problem) In order to achieve the above object, the ventilation system of the present invention has a blower installed in the upper part of the room, and the above blower has a partition plate installed inside the case so that the inside of the case is The case is divided into a lower chamber, and the upper end of the case is provided with an outside air inlet for communicating the upper chamber with outside air, and the lower end is provided with an inside air inlet for opening the lower chamber indoors, and the side of the case is provided with an outside air inlet for communicating the upper chamber with outside air. , an outside air outlet communicating with the upper chamber and an inside air outlet communicating with the lower chamber are opened vertically adjacent to each other with the partition plate as a boundary, and outside air is introduced into the upper chamber from the outside air inlet. An outside air fan that sucks in air and blows it indoors from an outside air outlet is provided in the lower chamber, and an inside air fan that sucks inside air into the lower chamber from the inside air intake and blows it indoors from an inside air outlet. be. An example of the present invention applied to a ventilation system for a livestock barn will be described below with reference to the drawings.

In Figure 1, a normal ventilation tube 1 is installed on the roof of a livestock barn H in a vertical position with one end of the ventilation port on the roof and the other end of the connection port located inside the barn. A blower device A is connected to the connection port.

The structure of the blower A is as follows. 2nd, 3rd
In the figure, the case 2 consists of a cylindrical case upper part 3 with open upper and lower ends connected to the ventilation tube 1, and a flat cylindrical case lower part 4 connected concentrically to the lower end of the upper part 3 in a communicating state. In the lower part 4 of this case 2, a disc-shaped partition plate 5 having a slightly larger diameter than the upper part 3 of the case is installed horizontally at an intermediate position within the lower part 4. is divided into an upper chamber 6 and a lower chamber 7, and an outside air inlet 9 is opened at the upper end of the opening of one of the upper chambers 6, that is, the upper end of the opening of the case upper part 3, which communicates with outside air through the ventilation pipe 1. Moreover, the above-mentioned partition plate 5 in the case lower part 4
In the outer peripheral part, the outer peripheral surface is opened, and a large number of partition walls 10 having a V-shaped cross section are arranged at equal intervals in the outer peripheral part as shown in the third figure. Matching partition walls 10, 10,...
Square tubular ports 11 are formed between these ports 11.
... A sub-diaphragm 1 extending in the radial direction while being close to the outer peripheral end of the diaphragm 5 and on the same plane.
2... is installed in each vent 11..., and an outside air outlet 13 that communicates with the upper chamber 6 and opens into the building, and an outside air outlet 13 that communicates with the lower chamber 7 and opens into the building, with the sub-diaphragm 12 as a boundary. Inside air blow-off ports 14 that open inward are formed in a vertically adjacent positional relationship. An outside air fan 15 consisting of a motor and blades for sucking outside air into the upper chamber 6 from the outside air blowing inlet 8 is placed at the center of the upper chamber 6 of the case 2 having the above-described structure, and at the center of the lower chamber 7. A fan 1 for inside air consisting of a motor and blades is placed at a position to draw inside air into the lower chamber 7 from the inside air intake port 9.
6 are attached by support frames 17 and 18, respectively.

In this example, the mounting structure of the partition plate 5 is such that four threaded rods 19 are vertically movably passed through the peripheral portion of the partition plate 5, and the upper and lower ends of each threaded rod 19 are attached to the lower part of the case. 4, and the diaphragm 5 is held in place by a pair of nuts 20, 20, .

In addition, in this example, the mounting structure of the sub-diaphragms 12 is such that shafts 21, 21 are protruded from intermediate positions between the right and left ends of the sub-diaphragm 12, and the shafts are connected to the partition walls 10, 10.
The left and right ends of the sub-diaphragm 12 are brought into pressure contact with the surfaces of the partition walls 10, 10, and the shafts 21, 21 are held at a predetermined angle by the pressure friction. The inclination angle can be adjusted by rotating it around the center. Note that the sub-diaphragms 12 are configured to open the passage 11 when rotated to a vertical position.

The effect of the above example will be explained along with a usage example. First, in winter, when the outside air fans 15 and 16 are rotated with the sub-diaphragms 12 horizontally positioned on the same surface as the diaphragm 5 as shown in the second figure, the outside air fans 15 and 16 are rotated. As a result, cold outside air is sucked into the upper chamber 6 from the outside air inlet 8 through the ventilation pipe 1 and is blown out radially horizontally from the outside air outlet 13.
The warm inside air sucked into the lower chamber 7 from the inside air inlet 9 by the inside air fan 16 is blown out radially in the horizontal direction from the inside air outlet 14, and the airflow inside these outlets and outside air flow in two layers, upper and lower, to the upper part of the building. The air flows radially, but as the cold outside air at the top immediately falls, it gradually mixes with the warm inside air at the bottom and becomes less cold. The cooled mixed air flow descends along the inside wall of the building as indicated by the arrow in FIG.

As another usage example of the above example, the outside air fan 1
For example, a frequency converter for increasing or decreasing the number of rotations is connected to each motor of the fan 5 and the indoor air fan 16, and these frequency converters are operated according to changes in the indoor temperature, or changes in the indoor temperature and the outdoor air temperature. It is also possible to adjust the rotational speed of the fans 15 and 16.

FIG. 4 shows loosening the nuts 20, 20... and repositioning the partition plate 5 appropriately downward along the threaded rods 19...
This is an example in which a gap is provided between the peripheral end of the partition plate 5 and the sub-diaphragms 12 for use in winter, etc., and in this example, a part of the outside air sucked into the upper chamber 6 is The warm inside air flows into the inside air outlet 14 through the gap and is mixed with the warm inside air, whereby a lower mixed air flow is horizontally discharged from the inside air outlet 14 at a faster flow rate than when only inside air is used and at a higher temperature than the outside air. On the other hand, cold upper-layer outside airflow with a reduced flow velocity is discharged from the outside air outlet 13, so that even if this upper-layer low-temperature outside airflow tries to descend immediately, the lower-layer high-speed high-temperature airflow blocks it and carries the upper-layer outside airflow far away. ,
During this time, the upper and lower layers will be mixed.

In the usage example shown in Fig. 5, the outer ends of the sub-diaphragms 12 are tilted downward to create a gap between the sub-diaphragms 5 and the sub-diaphragms 12, and are used to ventilate a relatively narrow livestock barn during the winter. In this example, the inside air outlet 1 is similar to the example in Fig. 4.
The lower layer mixed air flow from 4 and the upper layer outside air flow from outside air outlet 13 are respectively discharged with a downward slope.

(Effect of the invention) According to the ventilation system of the present invention, among the outside air and inside air outlets that are adjacent to each other above and below, outside air is blown out from the upper outside air outlet and inside air is blown out from the lower inside air outlet. When the temperature is low, the cold outside air blown out from the upper outside air outlet and the warm inside air blown out from the lower inside air outlet are released in two layers, upper and lower. It mixes with warm internal airflow and is supplied to the entire room while reducing the coldness, thereby eliminating the drawbacks of conventional methods, such as harming the health of livestock.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view of the livestock barn, FIG. 2 is an enlarged vertical cross-sectional view of the blower, FIG.
The figure is a schematic sectional view of each part showing an example of use. H... Livestock shed, A... Air blower, 2... Case,
6...Upper chamber, 7...Lower chamber, 8...Outside air intake port, 9
...Inside air intake port, 13...Outside air outlet, 14...
...Inside air outlet, 15...Outside air fan, 16...
…Fan for shyness.

Claims (1)

[Scope of Claim for Utility Model Registration] A blower device is installed in the upper part of the indoor room, and the blower device is provided with a partition plate inside the case to divide the inside of the case into an upper and a lower chamber, and the above-mentioned blower device is installed at the upper end of the case. An outside air inlet that communicates the room with outside air is provided at the lower end, and an inside air inlet that opens the lower chamber indoors at the lower end, and an outside air outlet that communicates with the upper chamber and an outside air outlet that communicates with the lower chamber are provided on the side of the case. Inside air outlets are opened vertically adjacent to each other with the partition plate as a boundary, and an outside air fan is installed in the upper chamber to draw outside air into the upper chamber from the outside air intake port and blow it indoors from the outside air outlet. A ventilation system, wherein inside air fans are installed in the lower chamber, respectively, sucking inside air into the lower chamber from the inside air intake port and blowing it indoors from the inside air outlet.