Patent Description:
According to a second aspect, the present disclosure relates to a construction element comprising a one-way valve according to the first aspect of the present disclosure.

According to a third aspect, the present disclosure relates to method of realising a construction element according to the second aspect of the present disclosure.

The one-way valve according to the first aspect of the present disclosure comprises:.

Preferably, said first movable elements and said second movable elements are movable between first positions, defining an open state of said one-way valve for allowing said hollow filling element to pass through said one-way valve and second positions, defining a closed state of said one-way valve for blocking said insulation material wherein, in the second positions, said first movable elements and said second movable elements contact each other thereby closing said first opening and said second opening.

Preferably, said second opening is provided at a side of said first opening facing said second side, wherein said second opening is aligned with said first opening for allowing said hollow filling element to pass through said first opening and said second opening.

By providing a first body with first movable element and a second body with second movable elements a one-way valve is realised wherein the first movable elements and the second movable elements cooperate for realising a relative fast and reliable closure of the one-way valve upon removal of the hollow filling element from the one-way valve.

The present disclosure relies at least on the insight that for allowing an individual construction element to be filled in a highly automated production facility a relative fast, reliable and cost effective solution is beneficial for avoiding that the insulation material escapes the construction element via a filling opening that was used for filling the construction element with the insulation material. In this regard it is pointed out that an insulation material such as polyurethane, or the liquid components combined to form polyurethane, is inserted into the construction element, via the hollow filling element, when still being in a liquid state, or at least flowable state. The one-way valve is arranged for avoiding that the polyurethane escapes the construction element via the filling opening not only when solidified, but also when still in the flowable state.

Preferably, each of said first and second movable elements extend in a direction away from said first side.

By providing each of said first and second movable elements such that these elements extend in a direction away from said first side, a force of the polyurethane acting on the first and second movable elements is forcing the first and second movable elements to the second positions. This is beneficial for realising a relative reliable closure of the one-way valve.

Preferably, each of said first and second movable elements extend in a direction away from said first side such that each of said first movable elements extends through the second opening and at least partly between neighbouring second movable elements.

By providing each of said first movable elements such that these extend through the second opening and at least partly between neighbouring second movable elements an opening that may be present between neighbouring second movable elements is closed in the second positions of the first and second movable elements for realising a relative reliable closure of the one-way valve.

Preferably, each of said first movable elements extends at least partly along a side of neighbouring second movable elements facing said first side of said one-way valve for said blocking of said insulation material. This is beneficial for realising an overlap between a respective first movable element of the first movable elements with neighbouring second movable elements for realising a relative reliable closure of the one-way valve.

In an embodiment of the one-way valve, said one-way valve comprises an equal number of first movable elements and second movable elements. This is beneficial for realising a relative fast and reliable closure of the one-way valve while allowing the hollow filling element to pass through the one-way valve when the first and second movable elements are in the first positions.

Preferably, said one-way valve comprises <NUM> to <NUM> first movable elements, preferably <NUM> first movable elements. The present disclosure relies at least partly on the insight that with <NUM> to <NUM>, preferably <NUM>, first movable elements are relative reliable closure of the one-way valve may be achieved.

It is advantageous if said one-way valve comprises an urging element arranged for urging said second movable elements to said second positions. This is beneficial for realising a relative fast and reliable closure of the one-way valve.

In this regard, it is beneficial if at least a subset of said second movable elements comprise a connection arrangement for connecting said urging element to said subset of said second movable elements.

Preferably, each of said first movable elements comprises a rib extending between neighbouring second movable elements. This is beneficial for realising a relative reliable closure of the one-way valve.

It is beneficial if each of said second movable elements comprises a first protrusion extending at least partly between neighbouring first movable elements. This is beneficial for realising a relative reliable closure of the one-way valve.

Preferably, said first body comprises second protrusions arranged for preventing said first movable element to move beyond said first positions. This is advantageous for realising a one-way valve wherein a space between the hollow filling element and the first movable elements, during use, is predetermined when using the one-way valve in combination with a hollow filling element having a predetermined diameter. This is beneficial for avoiding, or at least significantly reducing the risk of insulation material flowing from the second side of the one-way valve to the first side of the one-way valve when said first movable elements are in the second positions and the hollow filling element is provided through the one-way valve.

Preferably, said second body comprises a receiving space for receiving said first body. This is beneficial for realising a relative compact one-way valve.

It is advantageous if said first movable elements and said second movable elements have a triangular shape. This is beneficial for realising a relative reliable closure of the one-way valve.

Preferably, said one-way valve comprises or consists of a polymer chosen from the group of polyolefins, preferably polypropylenes.

In this regard, it is beneficial if said first movable elements and said second movable elements are movable between said first positions and said second positions by elastic deformation of said polymer.

In an embodiment of the one-way valve, said first movable elements and said second movable elements are configured such that when said first movable elements and said second movable elements are in said second positions a maximum dimension of a gap between neighbouring elements of said first movable elements and said second movable elements is in the range of <NUM> to <NUM>, preferably <NUM>. The present disclosure relies at least partly on the insight that polyurethane in either the flowable state or the solidified state does not pass an opening in the range of <NUM> to <NUM>.

According to the second aspect, the present disclosure relates to a construction element, such as a floor element or a wall element, provided or still to be provided with an insulation material, such as polyurethane, in a receiving space of said construction element, wherein said construction element is provided with at least one filling opening in a side wall of said receiving space and a one-way valve according to any one of the preceding claims, wherein said one-way valve is aligned with said filling opening and connected with said first side to said side wall at a side facing said receiving space for blocking said insulation material.

Embodiments of the one-way valve according to the first aspect of the present disclosure presented previously correspond to or are similar to embodiments of the one-way valve comprised by the construction element according to the second aspect of the present disclosure.

Effects of the one-way valve according to the first aspect of the present disclosure presented previously correspond to or are similar to effects of the construction element according to the second aspect of the present disclosure.

Preferably, said construction element comprises a venting arrangement configured to allow gas to exit said receiving space via said venting arrangement and block said insulation material from exiting, via said venting arrangement, said receiving space.

In this regard, it is advantageous if a venting opening in said venting arrangement is in the range of <NUM> to <NUM>, preferably <NUM>. A venting opening in this range is beneficial for allowing air to escape the receiving space while maintaining the insulation material inside the receiving space. The present disclosure relies at least partly on the insight that polyurethane in either the flowable state or the solidified state does not pass an opening in the range of <NUM> to <NUM>.

According to a third aspect, the present disclosure relates to a method of realising a construction element according to the second aspect of the present disclosure, said method comprising the steps of:.

Embodiments of the one-way valve according to the first aspect of the present disclosure presented previously and embodiments of the construction element according to the second aspect of the present disclosure correspond to or are similar to embodiments of the one-way valve and the construction element used during the method according to the third aspect of the present disclosure.

Effects of the one-way valve according to the first aspect of the present disclosure presented previously and embodiments of the construction element according to the second aspect of the present disclosure correspond to or are similar to effects of the method according to the third aspect of the present disclosure.

In this regard, it is beneficial if during said method a manipulation device such as robot or a linear drive is used, wherein said manipulation device is connected to said hollow filling element and moving said hollow filling element during said step of providing in said receiving space and/or moving said hollow filling element during said step of withdrawing. This is beneficial for realising a relative highly automated production facility without the need of a human operator, or at least a significant reduction of the required human labour.

The present disclosure will now be explained by means of a description of an embodiment of a one-way valve in accordance to the first aspect, a construction element in accordance to the second aspect, and a method in accordance to the third aspect, in which reference is made to the following figures, in which:.

<FIG> disclose a one-way valve <NUM> according to the first aspect of the present disclosure. The one-way valve <NUM>, comprised of a polymer, is configured to allow a hollow filling element <NUM>, such as a tube or a hose, to pass through the one-way valve <NUM> from a first side <NUM> of the one-way valve <NUM> to an opposite, second side <NUM> of said one-way valve <NUM>. By means of the hollow filling element <NUM>, an insulation material <NUM>, such as polyurethane, is provided in a receiving space <NUM> located at a side facing the second side <NUM> of the one-way valve <NUM>. The one-way valve <NUM> is configured for blocking the insulation material <NUM> from the second side <NUM> to the first side <NUM> of the one-way valve <NUM>. This enables the insulation material <NUM> to be locked up in the receiving space <NUM>, after the insulation material <NUM> is provided by the hollow filling element <NUM> via the one-way valve <NUM> and after the hollow filling element <NUM> is drawn back from the one-way valve <NUM>.

The one-way valve <NUM> comprises a first body <NUM> and a second body <NUM>, wherein the second body <NUM> comprises a receiving space <NUM> for receiving the first body <NUM>. The first body <NUM> is provided with a first opening <NUM> and first movable elements <NUM> that are spaced apart along a circumference of the first opening <NUM>. The second body <NUM> is provided with a second opening <NUM> and second movable elements <NUM> that are spaced apart along a circumference of the second opening <NUM>.

The second opening <NUM> is provided at a side of the first opening <NUM> facing the second side <NUM>. The first opening <NUM> and the second opening <NUM> are aligned for allowing the hollow filling element <NUM> to pass through the first opening <NUM> and the second opening <NUM>.

The one-way valve <NUM> comprises an equal number of ten first movable elements <NUM> and ten second movable elements <NUM>, each of them extending in a direction away from the first side <NUM> and such that each of the first movable elements <NUM> extend through the second opening <NUM> and at least partly between neighbouring second movable elements <NUM>.

The first movable elements <NUM> and the second movable elements <NUM> are movable between first positions and second positions, by elastic deformation of the polymer. In the first positions, the first and second movable elements <NUM>, <NUM> define an open state of the one-way valve <NUM>. In the open state of the one-way valve <NUM>, the hollow filling element <NUM> is allowed to pass through the one-way valve <NUM> via the first opening <NUM> and the second opening <NUM>. In the second positions, the first movable elements <NUM> and the second movable elements <NUM> contact each other and defining a closed state of the one-way valve <NUM>. In the closed state of the one-way valve <NUM>, the insulation material <NUM> is blocked for exiting the receiving space <NUM> via the first opening <NUM> and the second opening <NUM>.

The first movable elements <NUM> and the second movable elements <NUM> are triangular shaped. The second movable elements <NUM> are positioned with an offset of <NUM> degrees relative to the first elements <NUM> along the circumference of the respective first and second openings <NUM>,<NUM>, such that each triangle shaped plane of the first movable elements <NUM> overlaps the free space between two neighbouring second movable elements <NUM> and vice versa.

Each of the second movable elements <NUM> comprises a first protrusion <NUM> extending on a side facing the first side <NUM>. The first protrusions <NUM> extend, at least partly, between neighbouring first movable elements <NUM>. Each of the first movable elements <NUM> comprises a rib <NUM> extending over the length of the triangle shaped plane of each first movable element <NUM> on a side facing the second side <NUM>. The ribs <NUM> extend between neighbouring second movable elements <NUM>. The first protrusions <NUM> and the ribs <NUM> contribute to realizing a reliable closure of the one-way valve <NUM> in the closed state.

The first body <NUM> is provided with ten second protrusions <NUM>. Each second protrusions <NUM> is positioned in line with one of the ribs <NUM>, such that the second protrusions <NUM> are positioned against the respective ribs <NUM> when the first movable elements <NUM> are in the first positions, thereby preventing the first movable element <NUM> to move beyond the first positions.

The one-way valve <NUM> comprises an urging element <NUM>, for example a circular shaped elastic band, arranged for urging the second movable elements <NUM> to the second positions and thereby urging the one-way valve <NUM> to the closed state. The urging element <NUM> is connected to a subset of the second movable elements <NUM>, by means of connection arrangements <NUM> provided on five of the second movable elements <NUM>.

Due to the provision and hardening of the insulation material <NUM> to the receiving space <NUM> at a side facing the second side <NUM> of the one-way valve <NUM>, additional forces are applied to the second moving elements <NUM> thereby forcing the one-way valve <NUM> to the close state. In particular, the insulation material <NUM> provided between the second moving elements <NUM> and third protrusions <NUM>, provided on the second body <NUM>, realize an additional reliable closure of the one-way valve <NUM> in the closed state. Moreover, the protrusions <NUM> are arranged for anchoring the one-way valve <NUM>, via the second body <NUM> to the insulation material <NUM>. Recesses <NUM> in the second body <NUM> are provided for allowing the second body <NUM> to be manufactured in a cost effective manner while being provided with the protrusions <NUM>. These recesses <NUM> are enclosed by complementary fourth protrusions <NUM>, provided in the first body <NUM>, thereby blocking the insulation material <NUM> for exiting the receiving space <NUM> via the recesses <NUM> in a space that may be present between the first body <NUM> and the second body <NUM>.

<FIG> and <FIG> disclose a construction element <NUM> according to the second aspect of the present disclosure. The construction element <NUM> can be for example a floor element or a wall element, comprising a receiving space <NUM> bounded by two side walls <NUM>, <NUM> that needs to be provided with insulation material <NUM> in the receiving space <NUM>.

The construction element <NUM> is provided with a filling opening <NUM> in a first side wall <NUM> and a one-way valve <NUM> as described above. The one-way valve <NUM> is aligned with the filling opening <NUM> in such a way that the hollow filling element <NUM> can penetrate through the filling opening <NUM> and the first and second opening <NUM>, <NUM> of the one-way valve <NUM>. This allows the hollow filling element <NUM> to pass through the one-way valve <NUM>, and enables an outer end of the hollow filling element <NUM> to be received in the receiving space <NUM> of the construction element <NUM>. The one-way valve <NUM> is connected with the first side <NUM> to the first side wall <NUM>, at a side facing the receiving space <NUM> inside the construction element <NUM>. The one-way valve <NUM> can for example be connected by means of dedicated screws (not shown) that are connected to the first side wall <NUM>, via the first and second through holes <NUM>, <NUM> provided in the one-way valve <NUM>.

As the hollow filling element <NUM> penetrates through the first and second opening <NUM>, <NUM> of the one-way <NUM>, the first movable elements <NUM> and the second movable elements <NUM> of the one-way valve <NUM> are urged by the hollow filling element <NUM> from the second positions, defining the closed state of the one-way valve <NUM>, to the of the first positions, defining the open state of the one-way valve <NUM>. When the outer end of the hollow filling element <NUM> is received in the receiving space <NUM> of the construction element <NUM>, as shown in <FIG>, the receiving space <NUM> can be provided with the insulation material <NUM> via the hollow filling element <NUM>.

When the receiving space <NUM> of the construction element <NUM> is provided with a predetermined amount of insulation material <NUM>, the hollow filling element <NUM> is drawn back from the construction element <NUM>. While drawing back the hollow filling element <NUM>, the first movable elements <NUM> and the second movable elements <NUM> of the one-way valve <NUM> are urged back towards the second positions due to the elastic deformation of the polymer and due to the force provided by the circular shaped elastic band <NUM> connected to the second movable elements <NUM>. When the first movable elements <NUM> and the second movable elements <NUM> are in the second positions, the first movable elements <NUM> and the second movable elements <NUM> contact each other thereby closing the first opening <NUM> and the second opening <NUM>. This results in the closed state of the one-way valve <NUM>, as shown in <FIG>, thereby blocking the insulation material <NUM> for exiting the construction element <NUM>. Due to the denseness of the insulation material provided in the receiving space <NUM>, an additional locking force is provided onto the first movable elements <NUM> and the second movable elements <NUM>, thereby forcing the one-way valve <NUM> to maintain the closed state thereof.

The construction element <NUM> furthermore comprises a venting arrangement <NUM>, which is shown in more detail in <FIG>. The venting arrangement <NUM> is connected to the second side wall <NUM>, opposite to the first side wall <NUM>, by means of screws (not shown), via third through holes <NUM>. Alternatively it is conceivable that the venting arrangement is connected to the first side wall and/or a further side wall. The venting arrangement <NUM> is provided with twelve venting openings <NUM> for allowing gas to exit the receiving space <NUM> via the venting arrangement <NUM> and complementary openings in the second side wall <NUM>. The venting openings have a diameter of <NUM> for blocking the insulation material <NUM> from exiting the receiving space <NUM>, via the venting arrangement <NUM>.

<FIG> discloses a method <NUM> of realising the construction element <NUM> as described above, according to the third aspect of the present disclosure. In a first step <NUM>, the hollow filling <NUM> element is provided from the first side <NUM> of the one-way valve <NUM>, via the first opening <NUM> and the second opening <NUM>, in the receiving space <NUM>. In a subsequent step <NUM>, the insulation material <NUM> and/or liquid components for forming the insulation material <NUM> is provided, via the hollow filling element <NUM>, into the receiving space <NUM> of the construction element <NUM>. In a final step <NUM>, the hollow filling element <NUM> is withdrawn from the construction element <NUM> and the insulation material <NUM> is blocked at the second side <NUM> of the one-way valve <NUM>.

Claim 1:
A one-way valve (<NUM>) configured to allow a hollow filling element (<NUM>), such as a tube or a hose, to pass through the one-way valve (<NUM>) from a first side (<NUM>) of said one-way valve (<NUM>) to an opposite, second side (<NUM>) of said one-way valve (<NUM>), and blocking an insulation material (<NUM>), such as polyurethane, from said second side (<NUM>) to said first side (<NUM>) of said one-way valve (<NUM>), said one-way valve (<NUM>) comprising:
- a first body (<NUM>) provided with a first opening (<NUM>) and first movable elements (<NUM>) that are spaced apart along a circumference of said first opening (<NUM>);
- a second body (<NUM>) provided with a second opening (<NUM>) and second movable elements (<NUM>) that are spaced apart along a circumference of said second opening (<NUM>);
wherein said first movable elements (<NUM>) and said second movable elements (<NUM>) are movable between first positions, defining an open state of said one-way valve (<NUM>) for allowing said hollow filling element (<NUM>) to pass through said one-way valve (<NUM>) and second positions, defining a closed state of said one-way valve (<NUM>) for blocking said insulation material (<NUM>) wherein, in the second positions, said first movable elements (<NUM>) and said second movable elements (<NUM>) contact each other thereby closing said first opening (<NUM>) and said second opening (<NUM>);
wherein said second opening (<NUM>) is provided at a side of said first opening (<NUM>) facing said second side (<NUM>), wherein said second opening (<NUM>) is aligned with said first opening (<NUM>) for allowing said hollow filling element (<NUM>) to pass through said first opening (<NUM>) and said second opening (<NUM>); and
wherein each of said first and second movable elements (<NUM>, <NUM>) extend in a direction away from said first side (<NUM>) and such that each of said first movable elements (<NUM>) extends through the second opening (<NUM>) and at least partly between neighbouring second movable elements (<NUM>).