ES2649693T3 - Drain - Google Patents

Abstract

Drain (20) for discharge of a liquid, in particular water, to, for example, an outlet pipe (21), said drain (20) comprises an inlet flow opening (4), an outflow flow opening to connect to an outlet pipe (21) and an air trap arranged between the incoming flow opening and the outgoing flow opening, said air trap comprises a tank (2) open on the upper side to collect liquid flowing along the inlet flow opening (4) characterized in that the air trap comprises two overflow channels (8) running on the upper side leaving the tank (2) arranged in top view opposite each other to discharge liquid from the liquid discharge from the tank (2) to the outgoing flow opening, because the incoming flow opening (4) is arranged in top view centrally and the outgoing flow opening is arranged outside the incoming flow opening (4), from so the water flows from the inward flow opening (4) radial out towards the outgoing flow opening; and because a part of the overflow channels (8) is in a higher position than the incoming flow opening (4) of the drain (20).

Description

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DESCRIPTION

Drain

The invention relates to a drain according to the preamble of claim 1.

Such drains are used, for example, for kitchen sinks, shower trays and bathrooms and are known from, for example, European patent EP 1627968.

The air trap of a drain has the purpose of air-tight sealing of the connection to the wastewater system, in particular the outlet pipe, while a flow of liquid can still flow from the drain to the outlet pipe. This prevents unpleasant odors from the sewage system from entering an inhabited area through the drain.

Known drains take up considerable space under, for example, the shower tray, this space is not always available. This space is particularly defined by the air trap. In this air trap there is an amount of water that provides sealing. In terms of legislation the height of this amount of water is important since this water must be able to seal for a fixed period despite the fact that the water will evaporate. For example in the Netherlands a minimum height of 5 cm applies.

Given a height of this type, the height of the drain will easily be approximately 7 cm. In particular cases this is still too much, and therefore the object of the present invention is to provide a drain that can be made even flatter or at least have a smaller total depth.

This object is achieved with a drain according to claim 1.

In a usual drain with a normal air trap of, for example, 5 cm, space is required both on the upper side and on the lower side of the air trap to allow the passage of liquid. Assuming that approximately 1 cm is needed for this purpose, a conventional drain will then easily reach a height of 7 cm. In the drain according to the invention a part of the overflow channel is now in a position higher than the incoming flow opening of the drain. The space on the upper side is hereby placed above the inlet flow opening, whereby the drain still per se has a height of, in this example, 7 cm, but in this case, with the value in the For example, the drain only protrudes 6 cm from the bottom side. Thus, a smaller total depth drain is obtained.

In one embodiment of the invention, the overflow channel comprises an inlet opening disposed in the reservoir and an outlet opening that flows vertically under the upper side of the reservoir. The distance between the inlet opening and the upper side of the tank determines the height of the air trap in the invention.

In another embodiment of the invention, the reservoir comprises an upper edge and the highest part of the overflow channel is disposed in the upper edge. With such an upper edge the drain can easily be installed in, for example, a shower tray, and the overflow channel is also partially integrated in this upper edge.

The upper edge preferably comprises an elevation to accommodate the highest part of the channel.

In even another embodiment of the drain which is not according to the invention, the inlet opening is located below the center of the tank in the vertical direction. The total depth of the drain is hereby kept as small as possible.

Another embodiment that is not in accordance with the invention further comprises a gutter comprising an elongate receptacle of substantially U-shaped cross-section and a drain which is not according to the invention disposed at the bottom of the U-shaped receptacle, wherein the opening Inlet flow is substantially flush with the bottom of the receptacle. A drain that is not according to the invention is particularly advantageous in the case of such an elongated gutter. An elongated gutter of this type can, for example, be placed on a tiled floor. The gutter itself already has a determined total depth and, as the drain is arranged under the U-shaped receptacle, the total depth, at least in the drain position, is hereby further increased. Therefore it is advantageous that the drain according to the invention has a small total depth.

In yet another embodiment that is not according to the invention, the incoming flow opening is elongated, for example oval. This embodiment of the drain is widely preferred, particularly in the case of an elongated gutter. The elongated opening of incoming flow results in a long overflow edge, whereby a large amount of water can be discharged at a limited height. Due to the elongated shape the overflow channel also extends along the length of the drain. The overflow channel hereby is a flat channel that can similarly discharge a large amount. The highest point in the overflow channel is also a long edge, so the overflow height may remain limited. The overflow height is the required space above the long edge

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to carry a certain amount of liquid per unit of fixed time over the highest point. Due to the long edge, the overflow height can thus remain limited, and thus also the total height of the drain. It is even possible here that the height of the overflow channel is only a few millimeters, so the overflow channel does not even have to be above the inlet flow opening of the drain.

In a preferred embodiment of the gutter the elongated receptacle is covered with a grid. The drain according to the invention hereby is also hidden from view.

These and other features of the invention are further clarified with reference to the accompanying drawings.

Figures 1 and 2 show a perspective view of a first embodiment of a drain that is not according to the invention.

Figure 3 shows a cross section of the drain according to Figure 1.

Figures 4 and 5 show a perspective view of an embodiment of a drain according to the invention.

Figure 6 shows a cross section of the drain according to Figure 4.

Figure 7 shows a perspective view of an embodiment of a gutter that is not according to the invention with a drain according to Figures 1-3.

Figures 1-3 show an embodiment of a drain 1 that is not according to the invention. The drain 1 has a reservoir 2 with an upper edge 3. In this upper edge 3 an inlet flow opening 4 is provided along which liquid can enter the reservoir 2. The edge 3 is provided with a groove 5 in the that an O-ring 6 can be placed for the purpose of sealing the drain 1 with respect to an outlet pipe 7.

The drain 1 also has an overflow channel 8, whose inlet opening 9 is arranged on the lower side of the tank 2 and where the outlet opening 10 is at the same height as the edge 11 of the tank 2. In the upper edge 3 a lift 12 is provided so that the highest part of the channel 8 is hereby accommodated. The height H of the air trap is determined by the distance between the inlet opening 9 of the channel 8 and the edge upper 11 of the deposit.

Figures 4-6 show an embodiment 20 of a drain according to the invention. This drain 20 is in fact a double embodiment of the drain according to Figures 1-3. Therefore the same pieces are designated with the same reference numerals.

The water W that must be discharged flows through the upper edge 3 to the incoming flow opening 4. The water W enters here to the tank 2. As soon as the tank 2 is filled with water W, the water will flow through the channel 8 on the edge 11 of the tank and thus enter the outlet pipe 21.

Figure 7 shows a gutter 30 with a receptacle 31 having a U-shaped cross section. At the bottom of this receptacle 31 there is a drain 1 according to figures 1 3. In the receptacle there is also a grid 32 which in This case hides the drain 1 from view.

Claims (4)

5 10 fifteen twenty 25 1. Drain (20) for discharge of a liquid, in particular water, to, for example, an outlet pipe (21), said drain (20) comprises an incoming flow opening (4), an outgoing flow opening for connecting to an outlet pipe (21) and an air trap disposed between the incoming flow opening and the outgoing flow opening, said air trap comprises a reservoir (2) open on the upper side to collect liquid flowing into it. Incoming flow opening length (4) characterized by that The air trap comprises two overflow channels (8) that run on the upper side leaving the tank (2) arranged in a top view opposite each other to discharge liquid from the tank discharge liquid (2) to the opening of outflow, because the incoming flow opening (4) is arranged centrally in top view and the outgoing flow opening is disposed outside the incoming flow opening (4), so that water flows from the incoming flow opening (4) radial out towards the outflow opening; and because a part of the overflow channels (8) is in a position higher than the inlet flow opening (4) of the drain (20). 2. Drain (20) according to claim 1, characterized in that The overflow channel comprises an inlet opening disposed in the tank (2) and an outlet opening that flows vertically under the upper side of the tank. 3. Drain (20) according to claim 1 or 2, characterized in that the tank (2) comprises an upper edge (3) and where the highest part of the overflow channel (8) is arranged in the upper edge (3). 4. Drain (20) according to claim 3, wherein the upper edge (3) comprises an elevation (12) to accommodate the highest part of the channel (8).