JPS602503Y2 - ventilation system - Google Patents

Description

[Detailed explanation of the invention] This invention consists of installing indoor air intake/exhaust boxes on opposite walls of the room that are separated from each other, and using the entire length between them to create a heat exchange system that combines the exhaust air flow from the room with the intake air outside. This invention relates to a ventilation installation suitable for a large room, such as a greenhouse, which allows heat exchange with airflow.

In general, in ventilation systems with heat exchangers, the intake and exhaust ports are located close to each other, so in a large room such as a greenhouse, it is difficult to exchange air from every corner, and the heat exchanger used is Normally, it is necessary to have a large heat exchange area and a small external size, which results in a complicated structure, which has the drawback of increasing wind pressure loss.

This idea takes advantage of the large size of the room to be ventilated and configures the heat exchange passage as long as possible, thereby increasing the heat exchange area and separating the membrane and exhaust port for ventilation far from each other. This is intended to equalize the ventilation effect in various parts of the room.The ventilation of a greenhouse will be described below as an example.

That is, in the figure, 1 is the outer part of the greenhouse including the roof, 2 is the support, 3 is the soil for planting indoors A, 4 is the curtain stretched on the inner wall of the outer part, 5 is the skylight for ventilation, and 6 is the side wall. The ventilation fan 6 and the skylight 5 are operated after the curtain 4 is opened when the temperature in the room A rises too much during the daytime.

7 is an outside air suction fan installed near one wall of the room A, 8 is an indoor air exhaust fan installed directly above this fan, and the discharge end is connected to the discharge lower a of the outside air suction fan 7 through its central opening. An indoor air suction box 9 opened at 9a is provided.

Reference numeral 10 denotes an outside air suction duct provided in the fan 7, and this duct 10 is led out to the outside through, for example, underground under the base layer 11 of the outer shell 1 so as not to interfere with the opening and closing of the curtain 4.

Reference numeral 12 denotes an indoor air exhaust box provided near the wall on the opposite side to the indoor suction box 9, and similarly has a central opening 12a opposite to the central opening 9a of the suction box 9.

13 is an outside air inlet 13a opened in the central opening 12a of the exhaust box 12, and the other end is projected outside the box 12 into an outside air delivery pipe; 14 is the exhaust box 1;
The indoor air exhaust duct provided at 2 is led out to the outside through the underground under the base part 11 of the outer shell 1 so as not to interfere with the opening and closing of the curtain 4 in the same manner as described above.

Reference numeral 16 denotes an indoor air exhaust flow duct consisting of a thin film cylindrical body, such as a vinyl sheet, whose both ends are hermetically connected to the central opening 9a of the indoor air intake box 9 and the central opening 12a of the exhaust box 12. These heat exchange outside air flow ducts 17, 18, and 19 have both ends airtightly connected to the discharge lower a of the outside air suction fan 7 and the suction port 13a of the outside air delivery pipe 13 so as to be concentric with the duct 15. This is a holding link for fixing both ducts 15 and 16 to the support column 2.

In the above configuration, when each fan 7.8 is driven, each cylindrical fan 15, 16 is inflated to a tensioned state, and intake of outside air and exhaustion of indoor air are performed smoothly.At this time, both ducts) 15.
Heat exchange occurs between the outside air flow passing through the exhaust gas flow 16 and the exhaust flow.

Since the ventilation system of this invention is constructed as described above, the entire length of room A can be used to stretch the heat exchange duct,
This not only makes it possible to increase the heat exchange area with a simple structure, but also allows the indoor air intake box and the indoor air exhaust box with the outside air delivery pipe to be installed on opposite walls that are separated from each other in the room. Even if the space is large, uniform ventilation can be expected in all areas.

Other advantages include the ability to ventilate the room as required, even at night when the air is under stress.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the ventilation system of this invention.
FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1. In the figure, 1 is an outer shell, 4 is a curtain stretched in the room A of this outer shell, 7 is an outlet of the outside air suction fan 7a, 9 is an indoor air suction box, 10 is an outside air suction duct, 11
12 is an exhaust box, 14 is an indoor air exhaust duct, 15 is an exhaust flow duct from the room, and 16 is an outside air duct into the room. In other figures, the same reference numerals indicate the same parts.

Claims (2)

[Scope of utility model registration request] (1) An indoor air intake box 9 and an indoor air exhaust box 12 provided oppositely at both ends of the room A, and an exhaust flow duct 15 made of a cylindrical thin film provided between the boxes 9 and 12 so as to communicate with each other. In this exhaust flow duct 15, it straddles between both the boxes 9 and 12,
An outside airflow duct 16 from the thin film to the room A is provided concentrically with this exhaust airflow duct, and both of these ducts 15.16
A ventilation system that exchanges heat between the indoor exhaust air flow passing through the air and the intake outdoor air flow. (2) The outside air suction duct 10 of the outside air suction fan 7 whose discharge lower a is connected to the outside airflow duct 16 to the room A and the indoor air exhaust duct 14 connected to the exhaust flow duct 15 from the room are inside the outer enclosure 1, respectively. The ventilation system according to claim 1, which is a utility model, and is configured to be led out of the room from the base layer 11 of the outer shell 1, avoiding the curtain 4 stretched on the outside.