JPH05758Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ball damper intake valve installed in an airtight indoor envelope, ie, a floor, wall, ceiling, etc.

[Conventional technology] Airtightness is said to mean concentrating "gaps" in one place, clarifying ventilation routes, and increasing ventilation.

In recent years, the thermal performance of houses in northern Japan has been significantly improved due to new conventional construction methods such as the ventilation layer construction method.

However, when the kitchen range exhaust fan is turned on, it is currently unclear where the fresh air will be taken in from. In northern countries, stoves with smoke tubes or hot water boilers are installed indoors, and there is concern about carbon monoxide (CO) poisoning due to backflow.

Conventionally, the Swedish-made Durgo, which is used for drainage ventilation pipes, is known as an intake air intake using differential pressure (see Patent No. 1003524). The operating principle of this Dolgo vent valve will be explained as follows with reference to FIGS. 4a, b, and c.

(a) Normally (when no load is applied), the rubber seal 20 is closed to prevent odor from flowing out.

(b) During draining, when the inside of the drain pipe 21 becomes negative pressure, the rubber seal 20 lifts due to the pressure difference, sucks in the air necessary for draining, protects the traps of sanitary appliances, and performs draining smoothly.

(c) If there is positive pressure inside the drain pipe 21, the rubber seal 20
Close to prevent odor from escaping.

[Problems to be Solved by the Invention] However, with the Dolgo ventilation valve, there is a risk that ventilation may be insufficient when the degree of negative pressure is small, such as in an airtight room.

[Means for solving the problem] Therefore, the present inventor proposed that the difference in air pressure between the inside and outside of the building, which occurs when a ventilation fan in a kitchen or the like is turned on, causes the ball damper to float up and create an intake route, so that when the ventilation fan is turned off, They discovered that a ball damper intake valve that has the function of closing the intake hole with its own weight is suitable, and arrived at the present invention.

That is, according to the present invention, the intake valve is installed in the envelope of a building, that is, the floor, wall, ceiling, etc., in order to suck outside air into the room, and is a substantially cylindrical intake valve that houses a lightweight ball inside. A ball damper intake valve is provided, comprising a cylinder, and a ventilating lid removably provided on the upper or lower surface of the cylinder.

The cylinder used in the present invention has an open bottom end surface, a diameter of the bottom end surface is smaller than the diameter of the ball, and a horizontal cross-sectional diameter larger than the diameter of the ball at a position above the bottom. Preferably, the upper part is cylindrical and the lower part is funnel-shaped, or the cylindrical shape is provided with a drop lid having a hole in the center or lower part for receiving the ball.

[Example] Hereinafter, the present invention will be described in more detail based on the illustrated example.

FIG. 1 is a partial sectional view showing an example of a building using the ventilation layer structure in which the ball damper intake valve of the present invention is installed, and FIG. 2 is a partially enlarged view of FIG. 1.

In the figure, 1 is a ball damper intake valve, which consists of a perforated upper cover 2 and a cylinder 4 containing a ball 3 such as a lightweight ping pong ball inside.
It is constructed from the following, and is installed vertically across the floor section 5. Further, 9 is a ventilation fan, and 10 is a stove.

Here, the top cover 2 needs to be able to withstand a considerable load, have sufficient ventilation, and be able to be removed with a single touch.

In addition, the material used for the cylinder 4 is not particularly limited to the model, but vinyl chloride or
A material made of ABS resin is preferably used, and its shape may be, for example, as shown in Fig. 2, with the lower part constricted, or as shown in Fig. 3, the shape of the cylinder 4 is cylindrical, and the central part of the cylinder 4 is cylindrical. Alternatively, a drop lid 8 having a hole 7 for receiving the ball 3 at the bottom
An embodiment in which the following is provided is preferably adopted.

The ball 3 housed in the cylinder 4 may be made of a commonly used material such as a ping pong ball,
Alternatively, a softer and lighter material is preferably used.

In addition, in FIG. 1, 11 is a ventilation layer, 12 is a heat insulation layer, and the heat insulation layer 12 is made of a moisture-proof sealing material.
It must be made of a material that does not easily tear.

In addition, when installing this intake valve on the ceiling, for example, an inverted hook-shaped shape as shown in FIG. 5 can be considered. Note that 13 is a ball stopper pin.

In addition, regarding the cylinder diameter, height, ball dimensions, weight, shape, etc. at the installation position of the ball damper intake valve of the present invention described above, the required ventilation amount, floating differential pressure, floor or ceiling space, intake air It is determined by taking into account diffusion, design sense, etc.

In the intake valve of the present invention shown in FIG. 2, when a 38 mm (φ) and 2.5 g ping pong ball was used as the ball, it was found that it floated with a low differential pressure of about 0.23 Aq.

[Effects of the Invention] As described above, the ball damper intake valve of the present invention has the advantage of sufficiently inhaling outside air even when the indoor negative pressure is low.

[Brief explanation of drawings]

Figure 1 is a partial sectional view showing an example of a building in which the ball damper intake valve of the present invention is installed, Figure 2 is a partially enlarged view of Figure 1, and Figure 3 is the ball damper intake valve of the present invention. FIGS. 4a, b, and c are explanatory diagrams showing the operating principle of a conventionally known Dolgo vent valve. FIG. 5 is an explanatory diagram showing still another embodiment of the present invention. be. 1...Ball damper intake valve, 2...Perforated ventilation top cover, 3...Ball, 4...Cylinder, 5...
...floor, 6...lower part, 7...hole, 8...drop lid,
13...Ball stopper pin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An intake valve installed in the envelope of a building to draw outside air into a room, which includes a substantially cylindrical cylinder containing a lightweight ball inside, and the cylinder. A ball damper intake valve comprising: a ventilating lid removably provided on the upper or lower surface of the ball damper intake valve. (2) The cylinder has an open bottom end face, a diameter of the bottom end face is smaller than the diameter of the ball, and a horizontal cross-sectional diameter larger than the diameter of the ball at a position above the bottom part; The ball damper intake valve according to claim 1, wherein the lower part is cylindrical and the lower part is funnel-shaped. (3) The ball damper intake valve according to claim 1, wherein the cylinder has a cylindrical shape and is provided with a ventilation cover having a hole for receiving a ball in the center or lower part of the cylinder.