WO2024110572A2

WO2024110572A2 - Sanitary installation part

Info

Publication number: WO2024110572A2
Application number: PCT/EP2023/082818
Authority: WO
Inventors: Wladimir Weiß; David Birmelin
Original assignee: Neoperl Gmbh
Priority date: 2022-11-25
Filing date: 2023-11-23
Publication date: 2024-05-30
Also published as: CN220318668U; CN118087658A; DE202022106621U1; WO2024110572A3

Abstract

The invention relates to a sanitary installation part (1) which comprises a disc-shaped main body (2), on which at least one through-flow opening (3) is formed, which through-flow opening can be at least partially closed by means of a control body (4) when the sanitary installation part (1) is used as intended, wherein a sealing ring (5) is arranged on the main body (2) in an axially secured manner, wherein the sanitary installation part (1) comprises a screen element (6) which at least partially engages in the main body (2), wherein the sealing ring (5) at least partially surrounds the screen element (6) on the outer circumference.

Description

Sanitary fitting

The invention relates to a sanitary fitting with a disk-shaped base body on which at least one flow opening is formed, which can be at least partially closed by at least one control body when the sanitary fitting is used as intended, wherein a sealing ring is axially secured on the base body or, in particular, is arranged so as to be axially securable when the fitting is used as intended.

Sanitary fittings of the type mentioned are already known for limiting a flow rate between two pipes, for example. Such fittings can be inserted into a screw sleeve of a shower hose, for example.

When installing previously known sanitary fittings, it can happen that they are accidentally inserted the wrong way round. Due to the incorrect orientation of the fitting within a pipe, the control body can be washed out by a fluid flowing through it and thus lost.

There are also sanitary fittings that have a sieve element that is arranged as an attachment sieve in front of the base body in the direction of flow in order to prevent particles from clogging the flow opening and impairing the function of the fitting. Here, too, there is the problem that such sieve elements can be washed away when a previously known fitting is inserted in the wrong orientation and thus get lost or, in the worst case, even block the pipe downstream.

The object underlying the invention is therefore to provide a sanitary fitting which has improved performance characteristics.

The solution to this problem is provided according to the invention by means of the subject matter according to claim 1.

In particular, to achieve the object, the invention proposes a sanitary fitting of the type mentioned at the outset, which is characterized in that it has a sieve element which at least partially engages in the base body, wherein the sealing ring at least partially encloses and/or surrounds the sieve element on the outer circumference. The sealing ring can thus contact the sieve element on its outer circumference, at least in the position of use. It is therefore possible to set up an improved loss protection for the sieve element using the sealing ring. The design of the sanitary fitting according to the invention makes it possible for the sealing ring to take on the additional function of loss protection in addition to its actual function of sealing two pipe sections to be connected. It is therefore not necessary to use additional parts to prevent loss.

The invention is applicable, for example, when the base body has a flow opening with a control body, or in the case of base bodies with more than one flow opening. In this case, one of the flow openings can be provided with a control body in order to form a flow rate regulator. A further flow opening can, for example, be equipped without a control body in order to form an unregulated throttle. Alternatively or additionally, a further flow opening can be equipped with a control body in order to form a further flow rate regulator. In this case, the control body can be identical to the control body of the first flow opening or can be designed as a separate control body. The sealing ring can contact the sealing element without pre-tension or apply a pre-tension. Alternatively, the sealing ring can at least partially enclose the sealing element, for example with a clearance. The clearance can, for example, be dimensioned such that at least in the position of use in which the sealing ring is squeezed, a violent release of the connection, for example a snap connection, is prevented.

According to an advantageous development, the sieve element can engage in the base body at least in sections in the radial direction. In particular, the sieve element can overlap the base body at least in sections in the radial direction inwards. In this way, an even better axial securing of the sieve element on the base body can be achieved.

In order to further improve the aforementioned loss protection, the sealing ring can at least partially enclose the sieve element and the base body on the outer circumference. The sealing ring can contact the sieve element and the base body on the outer circumference at least in the position of use of the installation part.

In order to create a particularly good and yet material-saving design of an advantageous sanitary installation part, the sealing ring can enclose the sieve element and/or the base body at least approximately at the level of the engagement of the sieve element in the base body on the outer circumference.

According to a particularly advantageous embodiment, the sealing ring can be made of a flexible material. When the component is used as intended, it is thus possible to compress the (preferably incompressible) sealing ring, which creates a radially acting fixing force. in particular a radially inward-acting fixing force is created on the sieve element and/or on the base body. The sealing ring can thus be deformed, in particular squeezed, for example between two pipe sections to be connected, in particular squeezed by an axially acting squeezing force. As a result of the squeezing of the sealing ring, it bulges out in the radial direction and leads to a better fixation of the sieve element on the base body. In addition, the squeezing also improves the sealing effect of the sealing ring.

According to a particularly advantageous embodiment, the sealing ring can axially secure the sieve element to the base body when the built-in part is used as intended. Even if the built-in part is incorrectly oriented when installed, this can prevent the sieve element from being washed off the base body.

In order to ensure a particularly good and preferably reversible securing of the sieve element to the base body, the sieve element can engage in the base body by means of at least one snap device. The snap device can engage in a recess formed on the base body. The sieve element can preferably have several snap devices, preferably arranged at equal distances from one another.

According to a particularly advantageous embodiment, the control body can be secured to the base body by the sieve element. This means that the control body can be protected from being washed away even if the built-in part is incorrectly aligned during assembly. In particular, the control body can be axially secured to the base body by the sieve element.

According to a further advantageous embodiment, the The control body is ring-shaped and can be displaced in the axial direction and is mounted on a guide dome.

In order to better prevent the control body from being washed away even if the installation part is incorrectly oriented in the installation position, a distance, in particular a gap, between the sieve element and a free end of the guide dome can be smaller than the material thickness of the control body. Alternatively, the guide dome can contact the sieve element with its free end. This can prevent the control body from being washed away by the installation part past the sieve element, as it is guaranteed that the control body is secured by the sieve element even if the installation position is incorrect.

In order to be able to set up a particularly good seal between the sealing ring and the base body, the sealing ring can have at least one axially acting sealing surface and/or at least one radially acting sealing surface which rests/rests on the base body and/or the sieve element. Pressure can thus be applied to a material of the sealing ring via the sealing surface. An internal pressure can thus build up in the sealing ring, in particular when an axially acting sealing surface is applied against an abutment of the sealing ring, which causes the radially acting sealing surface to be applied. A pull-out protection can thus be set up, for example for a snap connection of a snap device, in particular as described in more detail below.

According to a further particularly advantageous embodiment, the sealing ring can have projections arranged on the inner circumference, via which a contact between the sealing ring and the base body and/or between the sealing ring and the sieve element can be established or is established, in particular is established continuously. In particular, the projections can be designed as radially inwardly projecting scraper ribs The projections can thus be used to fix the individual parts of the installation part in a pre-assembly manner, which means that they are held together securely without the sealing ring being crushed.

Furthermore, it can be provided that the sanitary fitting has at least two control bodies, which are preferably assigned to different through-flow openings and thus each form different flow regulators.

In an advantageous embodiment, it can be provided that the sealing ring extends axially at least into an inlet area of the sieve element. This makes it possible to avoid a collision of the, for example, conical front sieve with a receiving part in the wrong installation orientation and/or a blockage of the screw thread before a sealing effect is achieved on the sealing ring.

In an advantageous embodiment, it can be provided that the sealing ring forms a contact surface on its upper side and/or on its lower side. The contact surfaces can be used, for example, for sealing and/or for the already described squeezing of the sealing ring.

In an advantageous embodiment, it can be provided that the sealing ring and the control body are made of the same material, in particular the same material. For example, the sealing ring and the control body can be made of an elastomer or a thermoplastic elastomer. The sealing ring and control body can, for example, be made of the same material but with different parameters such as a different degree of hardness (e.g. Shore hardness). The use of a uniform material can be advantageous, for example, when requirements in the food industry have to be met. Using the same material can simplify manufacturing efforts.

Alternatively or additionally, it can be provided that the sealing ring and the control body are made of a softer material than the base body and/or the sieve element. This makes it easier to achieve a sealing function and/or a control function using correspondingly soft parts, and a housing-forming and/or a stabilizing function using stiffer and/or harder parts.

Alternatively or additionally, it can be provided that the base body and the sieve element are made of the same material, in particular the same material. For example, thermoplastics can be used advantageously in this case.

An advantageous application of the invention of possibly independent inventive quality provides for the use of a sanitary fitting, in particular a fitting according to the invention as described above or claimed below, with a first flow behavior, in particular as a flow rate regulator, in a first installation orientation and with a second flow behavior, in particular as a throttle, in a second installation orientation. Thus, when the installation orientation is changed, which results in a change in the direction of flow, a qualitative change in the flow behavior, for example from an (unregulated) throttle to a flow rate regulator, or a quantitative change between different control values of a flow rate regulation can be achieved. The invention will now be described in more detail using exemplary embodiments, but is not limited to these exemplary embodiments. Further exemplary embodiments arise by combining the features of individual or multiple claims with one another and/or with individual or multiple features of the exemplary embodiments.

It shows:

Fig. 1 is a perspective view of a first embodiment of a sanitary fitting according to the invention,

Fig. 2 the design variant of the sanitary fitting from Fig. 1 in a longitudinal section,

Fig. 3 the sanitary fitting according to Figs. 1 and 2 in a correctly aligned installation position, with the inflow side at the top and the outflow side at the bottom,

Fig. 4 is a longitudinal sectional view of a second embodiment of a sanitary fitting according to the invention,

Fig. 5 shows a sealing ring belonging to the second embodiment of the sanitary fitting from Fig. 4, wherein the radially inwardly acting sealing surface of the sealing ring has a plurality of projections,

Fig. 6 is a further, partly perspective sectional view of the sanitary fitting according to Figs. 4 and 5,

Fig. 7 is a longitudinal sectional view of a third embodiment of a sanitary installation part,

Fig. 8 is a longitudinal sectional view of a fourth embodiment of a sanitary fitting according to the invention

Fig. 9 is a longitudinal sectional view analogous to Fig. 3 with the hose mounted in a first installation orientation and

Fig. 10 is a longitudinal sectional view as in Fig. 9 with the installation orientation reversed.

In Fig. 1-8, several embodiments of a sanitary fitting according to the invention are shown, each of which is designated as a whole as 1.

The sanitary fittings 1 are each designed as flow rate regulators in order to be able to adjust a flow rate of a fluid per unit of time, in particular to limit it to a desired flow rate.

As shown in Fig. 2, 3, 4, 6, 7 and 8, the sanitary fitting 1 has a flat base body 2 which has at least one flow opening 3 which can be closed and opened by a control body 4 depending on the fluid pressure. If the fluid pressure exceeds a certain threshold value, the control body 4 is displaced relative to the base body 2 in such a way that the at least one flow opening 3 is at least partially closed by the control body 4.

On the outer circumference, the base body 2 is at least partially surrounded by a sealing ring 5. At least in the installed position, the sealing ring 5 is held axially secured on the base body. In the flow direction upstream of the at least one flow opening 3, i.e. on the inflow side of the built-in part 1, a sieve element 6 is arranged, which can, for example, have a sieve surface arranged obliquely to the flow direction.

The sieve element 6 engages at least partially in the radial direction in the base body 2. In order to prevent the sieve element 6 from being washed away, for example if the sanitary fitting 1 is incorrectly oriented in the installation position, the sealing ring 5 contacts the sieve element 6 on its outside at least partially and thus prevents the sieve element 6 from becoming detached from the base body 2 due to exposure to fluid. The sieve element 6 can have a collar running around the circumference or several collar sections that can be contacted by the sealing ring 5.

As shown in Fig. 2, 4, 7 and 8, it is particularly advantageous if the sealing ring 5 acts on the sieve element 6 and/or the base body 2 radially inwards at least approximately at the level 7 of the engagement in the base body 2 on the outer circumference.

The sealing ring 5 is made at least partially from a flexible material, such as rubber. It is thus possible to squeeze the sealing ring 5 in its assembly position by an axially acting force. For example, the axial force mentioned can be generated by a screw connection between the two line sections to be connected. This axial force can be introduced via contact surfaces 16, 17 on the top side 14 and the bottom side 15 of the sealing ring 5.

The axial force causes a deformation of the sealing ring 5 , whereby it expands in the radial direction, in particular by an essentially incompressible material of the sealing ring 5 . This develops a fixing force 8 acting in a radially inward direction, which presses the sieve element 6 more strongly against the base body 2 . Thus, when used as intended, the sieve element 6 is even better fixed to the base body 2 . In particular, the axial securing of the sieve element 6 to the base body 2 can be strengthened in this way.

In order to be able to set up the connection between the sieve element 6 and the base body 2 as stably and/or reversibly as possible, the embodiments shown have a snap device 9 formed on the sieve element 6. The snap device 9 comprises at least one snap hook which engages in a corresponding recess on the base body and is pressed into the recess when the sealing ring 5 is squeezed. However, it is also conceivable that the operating principle is reversed, i.e. that the snap device 9 is formed on the base body 2 and the recess on the sieve element 6.

The control body 4 is also protected against being washed away by the sieve element 6 covering it on the upstream side when it is installed correctly and on the downstream side when it is installed incorrectly. This also provides an additional protection against loss of the control body 4.

The control body 4 is displaceable relative to the base body 2. In the embodiments shown in the figures, the base body has a guide dome 10 through which the ring-shaped control body 4 is axially guided.

In order to prevent the control body 4 from being washed away, it has a material thickness that is greater than a gap between the sieve element 5 and the free end of the Guide dome 10 .

In order to achieve optimal sealing of the area between the base body 2 and the sealing ring 5, the sealing ring 5 has at least one axially acting sealing surface 11 and at least one radially acting sealing surface 12, which rest on the base body 2 and the sieve element 6.

Fig. 5 shows an embodiment of a sealing ring 5 with radially projecting projections 13 arranged on the inner circumference. The projections 13 can be designed as scraper ribs, for example, in order to generate a certain frictional force between the sealing ring 5 and the base body 2, preferably in a pre-assembly position, in particular in an uncrushed state, so that the two parts are held together. Accordingly, it can be provided that the recessed sections between the projections 13 on the inner circumference of the sealing ring 5 do not rest against the base body 2 in the pre-assembly position. This can also facilitate the manufacture of the sanitary fitting 1, since the base body 2 can be connected to the sealing ring 5 with less effort.

Fig. 7 shows another embodiment in which the sealing ring 5 has only one axially acting sealing surface 11 aligned in the intended flow direction. The sealing ring 5 is therefore constructed in the form of a sleeve, with the axially acting sealing surface 11 being formed by a step.

Fig. 8 shows a further embodiment with at least two control bodies 4, wherein the control bodies 4 are assigned to different flow openings 3 in order to form a flow control function stage in interaction with these. In the embodiment shown, the control bodies 4 are each ring-shaped, wherein these are concentrically arranged on the Base body 2 are arranged.

Fig. 9 and 10 show an advantageous use of an installation part 1 according to the invention in installation orientations that are flipped against each other. In the first installation orientation (Fig. 9), the control body is activated when the flow is from top to bottom and a flow rate regulator is implemented. In the second installation orientation (Fig. 10), the control body 4 detaches from its associated control profile, which is formed on the flow opening 3, when the flow is from top to bottom. The flow opening 3 thus acts as an uncontrolled throttle.

In all other respects, the comments on the other figures apply accordingly.

List of reference symbols Sanitary fitting Base body Flow opening Control body Sealing ring Sieve element Height of the engagement Fixing force Snap device Guide dome Axially acting sealing surface Radially acting sealing surface Projection Top side Bottom side Contact surface Contact surface

Claims

Claims Sanitary fitting (1) , with a disc-shaped base body

(2) , on which at least one flow opening

(3) which can be at least partially closed by at least one regulating body (4) when the sanitary fitting (1) is used as intended, wherein a sealing ring (5) is arranged on the base body (2) in an axially secured or axially securable manner, characterized in that the sanitary fitting (1) has a sieve element (6) which at least partially engages in the base body (2), wherein the sealing ring (5) at least partially encloses and/or encompasses the sieve element (6) on the outer circumference. Sanitary fitting (1) according to claim 1, characterized in that the sieve element (6) engages in the base body (2) at least in sections in the radial direction. Sanitary fitting (1) according to claim 1 or 2, characterized in that the sealing ring (5) at least partially encloses the sieve element (6) and the base body (2) on the outer circumference. Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) surrounds and/or encompasses the sieve element (6) and/or the base body (2) at least approximately at the level (7) of the engagement of the sieve element (6) in the base body (2) on the outer circumference. Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) consists of a flexible material, and that when the sanitary fitting (1) is used as intended a pressing of the sealing ring (5) is possible or takes place, through which a radially acting fixing force (8) is created on the sieve element (6) and/or on the base body (2). Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) axially secures the sieve element (6) to the base body (2) when the sanitary fitting (1) is used as intended. Sanitary fitting (1) according to one of the preceding claims, characterized in that the sieve element (6) engages in the base body (2) by means of at least one snap device (9). Sanitary fitting (1) according to one of the preceding claims, characterized in that the regulating body (4) is secured against being washed away by the sieve element (6) on the base body (2), in particular that the regulating body (4) is axially secured by the sieve element (6) on the base body (2). Sanitary fitting (1) according to one of the preceding claims, characterized in that the control body (4) is ring-shaped and is placed on a guide dome (10) so as to be displaceable in the axial direction. Sanitary fitting (1) according to claim 9, characterized in that a distance, in particular a gap, between the sieve element (6) and a free end of the guide dome (10) is smaller than a material thickness of the control body

(4) and/or that the guide dome (10) contacts the sieve element (6) with its free end. Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) has at least one axially acting sealing surface (11) and/or at least one radially acting sealing surface (12) which rests on the base body (2) and/or on the sieve element (6). Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) has projections (13) arranged on the inner circumference, via which a contact between the sealing ring (5) and the base body (2) and/or between the sealing ring (5) and the sieve element (6) can be set up or is set up. Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring

(5) extends axially at least into an inlet region (18) of the sieve element (6). Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) forms a contact surface (16, 17) on its upper side (14) and/or on its lower side (15). Sanitary fitting (1) according to one of the preceding claims, characterized in that the sealing ring (5) and the regulating body (4) are made of the same material, in particular the same material, and/or of a softer material than the base body and/or the sieve element and/or that the base body and the sieve element are made of the same material, in particular the same material. Use of a sanitary fitting (1), in particular according to one of the preceding claims, with a first flow behavior, in particular as a flow rate regulator, in a first installation orientation and with a second flow behavior, in particular as a throttle, in a second installation orientation.