JPS5929782B2 - Recessed ceiling ventilation system - Google Patents

Description

[Detailed Description of the Invention] This invention installs a ventilation box equipped with a laminated cross-flow type heat exchange element in which the indoor exhaust air flow and the outdoor air flow cross each other into the ceiling opening of the room, and operates the indoor air exhaust fan. At times, the interior element acts to muffle the noise of the exhaust fan, and when the outside air supply layer is additionally operated, the element exchanges heat between the indoor exhaust flow and the farmer's outside air flow.

FIG. 1 shows an embodiment of the ventilation system of the present invention, which is constructed as follows.

In other words, there is a ventilation box A in the intake/exhaust port 2 opened on the ceiling panel 1.
As shown in FIG. 5, a so-called laminated cross-flow heat exchange element 3 made of a sound-absorbing material such as a corrugated Japanese paper board is housed inside.

4 is a cylindrical connection frame attached to an exhaust hole 5 provided in one side wall of the ventilation box A, and an exhaust fan B is connected to this via a connecting vibro.
is connected so that the indoor air is discharged to the outside via the element 3.

7 is an intake hole opened on the wall opposite the exhaust hole 50, and 8 is a removable blind plate that closes this hole. Do not work.

Therefore, when the exhaust fan B is operated in this state, the exhaust flow from the room passing through the element 3 becomes as shown by the arrow 49 in the figure, and all the passages inside the interior element 3 become indoor air exhaust flow paths. The air resistance at the core is that much smaller, and the operating noise from the exhaust fan B is also prevented from entering the room, so it also has a so-called noise-muffling effect.

FIG. 2 shows a case where the interior element 3 is used as an original heat exchanger. In this case, the blind plate 8 shown in FIG. 1 is removed and a cylindrical connecting frame 10 is fixed to the ridge instead. An outside air supply layer C is provided through a connecting pipe 11 to forcibly supply outside air into the room. In this case, the shutter 9 is opened by the wind pressure from the outside air supply layer C, and therefore the interior elements 3, an intake flow C and an exhaust flow II are formed as shown in the figure, and heat exchange is performed between these two in a well-known manner.

Furthermore, FIG. 3 shows that even if the thickness of the ceiling plate 1 happens to be thicker than that of a general case, the back of the grill 12 can absorb air.
This is a case where a gap-preventing gasket 13 made of resin, for example, is attached to the lowermost edge of the indoor side of the element 30 to prevent the exhaust gas from directly mixing with each other.

Further, 14 in the figure indicates a filter provided in the element 3.

The narrow cylinder in Figure 4 is the outside air supply C and exhaust fan B shown in Figure 2.
FIG. 5 shows a laminated cross-flow heat exchange element made of corrugated Japanese paper board installed in a ventilation box in the apparatus of the present invention.

Since the ventilation system of this invention is configured as described above,
Selective use of a ventilation box, exhaust fan, and outside air supply not only allows heat exchange between the indoor exhaust flow and the outdoor air flow, but also reduces the operating noise of the exhaust fan that enters the room from the exhaust fan when used exclusively for exhaust. It also makes it possible to absorb and relax to a large extent.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of an embodiment of the ventilation system of the present invention, and shows the exhaust fan in a silencing state. FIG. 2 shows another embodiment in which heat is exchanged between intake and exhaust flows by operating an exhaust fan and an outside air supply fan. FIG. 3 is a partial sectional view of the grill section showing means for adapting to changes in the thickness of the ceiling plate, FIG. 4 is a wiring circuit diagram, and FIG. 5 is a perspective view of the entire heat exchange element. In the figure, 1 is the ceiling board, 2 is the intake/exhaust port, 3 is the heat exchange element, 5 is the ventilation box, 9 is the outside air intake shutter, B is the exhaust fan for indoor air, C is for outside air supply, and 2 is the room exhaust flow,
Ha indicates the air flow outside of my body. In other figures, the same reference numerals indicate the same parts.

Claims (1)

[Scope of Claims] 1. A ventilation box equipped with a heat exchange element is provided at the intake/exhaust ports opened in the ceiling board of the room, and when the outside air introduction shutter provided in the ventilation box is closed, the indoor air is removed by the element. Ceiling-embedded structure that not only has a silencing effect on the exhaust fan, but also allows the element to perform heat exchange between the indoor exhaust air flow and the adult outdoor air flow when the shutter is opened by the outside air supply layer communicated with the ventilation box. shaped ventilation device. 2. A patent in which the interior heat exchange element of a ventilation box installed at the intake/exhaust vents in the ceiling board of a room is made of a laminate of sound-absorbing heat exchange plates such as Japanese paper, and is configured in a cross-flow type for intake/exhaust flow. A ceiling-embedded ventilation system according to claim 1.