BEARING COMPONENT FOR FLOW SENSOR, FLOW MEASURING UNIT, AND DOMESTIC APPLIANCE

Abstract

A bearing component of a flow sensor of a domestic appliance has a rotary axle which, in the installed state, is oriented so as to be substantially perpendicular to a flow direction of a fluid channel of the domestic appliance. The flow sensor has a first bearing at each of the opposing ends of the rotary axle, two opposing second bearings being contained in the bearing component. The two second bearings are spaced apart from one another in such a way that, in one state of the bearing component, they are engaged with the first bearings of the flow sensor, at least one arm of the bearing component being elastic, so that a distance between the second bearings can be increased in order to insert the flow sensor between the second bearings.

Claims

1. A bearing component of a flow sensor of a domestic appliance, the flow sensor having a rotary axle which, in the installed state, is oriented so as to be substantially perpendicular to a flow direction of a fluid channel of the domestic appliance, the flow sensor having a first bearing at each of the opposing ends of the rotary axle, the bearing component comprising: at least one arm; and two opposing second bearings are mounted to the at least one arm; wherein the two second bearings are spaced apart from one another in such a way that, in one state of the bearing component, they are engaged with the first bearings of the flow sensor, and the at least one arm is elastic, so that a distance between the second bearings can be increased in order to insert the flow sensor between the second bearings.

2. The bearing component of claim 1 further comprising a second arm joined to the first arm, wherein one of the second bearings is formed on the first arm and the other of the second bearings is formed opposite thereto on the second arm, wherein the arms correspond to an extension of the rotary axle of the flow sensor when the bearing component is in a relaxed state.

3. The bearing component of claim 2, wherein the first and second arms are connected at a first end and at an opposing second end, the second bearings being disposed substantially centrally between the first end and the second end such that the distance between the second bearings is increased when a compressive force is applied between the first end and the second end.

4. The bearing component of claim 1, wherein the bearing component is symmetrical around the axle connecting the second bearings.

5. A flow assembly for a domestic appliance, comprising: a bearing component including at least one arm and two opposing second bearings mounted to the at least one arm; and a flow sensor having a rotary axle with a first bearing at each of the opposing ends of the rotary axle, the rotary axle being received between the second bearings of the bearing component, wherein the two second bearings are spaced apart from one another in such a way that, in one state of the bearing component, they are engaged with the first bearings of the flow sensor, and the at least one arm is elastic, so that a distance between the second bearings can be increased in order to insert the flow sensor between the second bearings.

6. The flow assembly of claim 5, wherein a material of the flow sensor and of a material of the bearing component are the same.

7. The flow assembly of claim 5, wherein at least one of the components of the flow assembly contains a polyketone.

8. A domestic appliance comprising: a housing including a base body, a lid, and a channel; and a flow assembly including: a bearing component having at least one arm and two opposing bearings mounted to the at least one arm, and a flow sensor having a rotary axle that is received between the bearings of the bearing component; wherein the two bearings are spaced apart from one another in such a way that, in one state of the bearing component, they are engaged with the rotary axle of the flow sensor, and the at least one arm is elastic, so that a distance between the bearings can be increased in order to insert the flow sensor between the second bearings, and the base body or the lid has a receiving space configured to receive the bearing component such that the flow sensor is received in the bearing component and extends at least partially into the channel when the bearing component is received in the receiving space.

9. The domestic appliance of claim 8, wherein the lid is configured to fix the bearing component received in the receiving space.

10. The domestic appliance of claim 8, wherein the housing contains fiber-reinforced polyamide.

11. The domestic appliance of claim 8 further comprising a second arm joined to the first arm, wherein one of the bearings is formed on the first arm and the other of the second bearings is formed opposite thereto on the second arm, wherein the arms correspond to an extension of the rotary axle of the flow sensor when the bearing component is in a relaxed state.

12. The domestic appliance of claim 11, wherein the first and second arms are connected at a first end and at an opposing second end, the bearings being disposed substantially centrally between the first end and the second end such that the distance between the second bearings is increased when a compressive force is applied between the first end and the second end.

13. The domestic appliance of claim 8, wherein the bearing component is symmetrical around the axle connecting the bearings.

14. The domestic appliance of claim 8, wherein a material of the flow sensor and of a material of the bearing component are the same.

15. The domestic appliance of claim 14, wherein at least one of the components of the flow assembly contains a polyketone.

16. The domestic appliance of claim 15, wherein the at least one of the components of the flow assembly consists entirely of a polyketone.

17. The domestic appliance of claim 8, wherein the flow sensor includes an impeller.

18. The domestic appliance of claim 8 further comprising additional bearings at each end of the axle and configured to engage with the bearings, respectively.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG. 1 shows a schematic and exemplary view of a flow sensor;

[0039] FIG. 2 shows a schematic and exemplary view of a bearing component according to the invention;

[0040] FIG. 3 shows a schematic and exemplary view of the bearing component with inserted flow sensor;

[0041] FIG. 4 shows a schematic and exemplary view of the bearing component according to the invention inserted into a housing of a domestic appliance;

[0042] FIG. 5 shows a schematic view of an embodiment of the bearing component;

[0043] FIG. 6 shows a schematic view of another embodiment of the bearing component;

[0044] FIG. 7 shows a schematic view of another embodiment of the bearing component;

[0045] FIG. 8 shows a schematic view of another embodiment of the bearing component;

[0046] FIG. 9 shows a schematic view of another embodiment of the bearing component;

[0047] FIG. 10 shows a schematic view of another embodiment of the bearing component; and

[0048] FIG. 11 shows a base body with receptacle for a bearing component.

DETAILED DESCRIPTION

[0049] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0050] FIGS. 1A and 1B show schematic and exemplary views of a flow sensor 200 in the exemplary form of an impeller as it is used for determining the flow in an instantaneous water heater, for example. In this example, the flow sensor 200 has blade elements 210 and a magnetic element 220. By means of the blade elements 210, the flow sensor 200 rotates about a rotary axle 230. On both sides of the rotary axle 230, the flow sensor 200 has first bearings 232 that are designed to receive second bearings. FIG. 2 shows a schematic and exemplary view of a bearing component 300 for mounting a flow sensor 200 as shown in FIG. 1. FIG. 3 shows a schematic and exemplary view of the flow sensor 200 supported in the bearing component 300. The bearing component 300 has two arms 310 and 320, at each end of which is disposed a second bearing 312, 322.

[0051] The second bearings 312, 322 are designed to engage in the first bearings 232 of the flow sensor 200 or vice versa. In order to mount the flow sensor 200 in the bearing component 300, the arms 310,320 are spread apart, thereby increasing the distance between the second bearings 312 and 322. The flow sensor 200 can then be inserted between the second bearings 312, 322. Once released, the bearing component 300 returns to its original position, so that the flow sensor 200 is securely received within the bearing component 300.

[0052] In this example, in order to achieve secure fixation within the housing of the domestic appliance, the bearing component 300 further comprises two optional fixing collars 316, 326 that are adapted to the housing and may or may not differ from one another in other embodiments of the housing.

[0053] In this embodiment, the bearing component 300 is integrally made of a polyketone. Similarly, the flow sensor 200 is made of a polyketone. By virtue of the fact that the material of the flow sensor 200 and the bearing component 300 are the same, durable sliding properties of the axle mount and flow sensor 200 are ensured. In particular, the materials are preferably not fiber-reinforced in order to reduce abrasion in chlorinated waters.

[0054] In this example, the bearing component 300 has four arms 310, 320, 330, 340. The second bearings 312, 322 are each attached to two arms for the purpose of supporting the flow sensor 200. This results in a kind of closed ring of connected arms 310, 320, 330, 340 on which the optional fixing collars 316, 326 are formed. In other embodiments, a design with only two arms 310, 320 or 330, 340 is also conceivable, in which case, instead of a closed ring, only a semicircle is formed whose shape resembles a pair of headphones.

[0055] The arms 310, 320, 330, 340 are designed to be elastic or flexible so that the bearing component 300 can be pressed apart in an assembly process, particularly at the second bearings 312, 322, so that the flow sensor 200 fits between them and can be inserted into the bearing component 300. When the flow sensor 200 is inserted with its first bearings 232 into the second bearings 312, 322, the arms 310, 320, 330, 340 spring back again, and the flow sensor 200 is rotatably supported by the second bearings 312, 322. Thereafter, the bearing component 300 with the installed flow sensor 200 can be inserted into a receptacle 111 of the base body 100 of the instantaneous water heater (See FIG. 4). With the lid, the bearing component 300 is held in the base body 100 and the opening 112 is sealed in a watertight manner, so that the flow sensor 200 is at least partially mounted in the water channel of the domestic appliance, e.g., an instantaneous water heater. FIG. 3A shows the flow sensor 200 inserted into the bearing component 300 in a perspective view, FIG. 3B in plan view, and FIG. 3C in cross section, so that the second bearings 312, 322 as well as the first bearings 232 are clearly visible.

[0056] FIG. 4 shows a schematic and exemplary view of the flow assembly composed of bearing component 300 and flow sensor 200 inserted into a domestic appliance 1.

[0057] The domestic appliance 1 has a housing 100 with a base body 120. An opening 112 provides a path into a fluid channel for insertion of the flow assembly therein. The opening 112 is sealed by a lid (not shown). In order to improve the clarity of the illustration, only the rotary axle 230 of the flow sensor 200 is shown, which extends between the second bearings of the bearing component 300.

[0058] It can be seen that only the bearing component 300, which does not rotate, is in contact with the housing 100. The rotary axle 230, on the other hand, is supported exclusively within the bearing component 300 and, accordingly, is able to rotate with low friction. In this embodiment, the arms 310, 320 are inserted into the opening 112 downwardly into the drawing plane. In other embodiments, the bearing component 300 may also have a horizontal design, i.e., in the plane of the drawing.

[0059] The final position of the bearing component 300 is fixed by applying the lid. Alternatively, it is also possible to mount the flow assembly in the lid before the latter is put in place in order to seal the opening 112.

[0060] The contact surfaces of the bearing component 300 and of the flow sensor 200 may be made of the same material. This is uncommon in such bearing arrangements and is made possible by the polyketone design. Alternative materials for the bearing component 300 include POM.

[0061] The brackets or arms of the bearing component 300 and flow sensor 200 may not made of a fiber-reinforced material. In any case, if the second bearings 312, 322 are made of metal, particularly stainless steel or a higher-grade alloy, a fiber-reinforced flow sensor 200 is also advantageous.

[0062] FIGS. 5A and 5B show schematic and exemplary views of another embodiment of a bearing component 500 for supporting a flow sensor 200. A bearing rod 510 having two arms is mounted vertically in the flow sensor 200. The assembly of bearing rod 510 and flow sensor 200 is then mounted into the housing 100 and clamped in place with a lid (not shown).

[0063] FIG. 6 shows a schematic and exemplary view of another embodiment of a bearing component 600 of a flow sensor 200. A bearing rod 610 is inserted into the flow sensor 200. A latching hook 620 of the bearing rod 610 prevents the bearing rod 610 from falling out during assembly. The assembly is then mounted into the housing 100 and clamped in place with a lid (not shown.

[0064] FIGS. 7A-7C shows various schematic and exemplary views of another embodiment of a bearing assembly of a flow sensor 200. In this embodiment, two arms 710, 720 of a bearing component 700 are completed with the flow sensor 200 and clamped into a lid 150. The lid 150 is then connected, particularly screwed using screws 160, to the housing.

[0065] FIGS. 8A-8B show another embodiment of a bearing component 800 embodied as a bearing rod 810 that is prepared for pre-assembly in the lid 150. The bearing component 800 may have a bayonet joint 820 for anchoring in the lid 150. The bearing rod 810 is completed with the flow sensor 200 and then mounted, e.g., screwed with screws 160, onto the housing 100.

[0066] FIGS. 9A-9D show another embodiment of a bearing component 900 embodied as a bearing pin 910. Here, the bearing pin 910 has a rectangular cross section, which enables it to be securely clamped between the housing 100 and the lid 150. The bearing pin 910 is inserted into the flow sensor 200 and, together, inserted into the housing 100 before being clamped using a lid 150.

[0067] FIGS. 10A-10C show another embodiment of a bearing component 1000 having three flexible arms 1010, 1020, 1030. The arms 1010, 1020 each have a second bearing or, alternatively, a bushing in their center for coupling with a bushing or corresponding second bearing of the flow sensor 200. The respective ends of the arms 1010, 1020, 1030 are connected to one another. By applying force to the ends of the arms 1010, 1020, 1030, the second bearings or first bearings are spread apart at the center of the arms 1010, 1020 in order to allow insertion of the flow sensor 200. When relaxed, the flow sensor 200 is then securely received between the arms. The arm 1030 enables the bearing component 1000 to be clamped in the lid 150. Once clamped in the lid 150, the assembly can then be securely mounted in the housing 100.

[0068] A receptacle 111 for the bearing component 300 is shown in FIG. 11. A receptacle 111 is disposed around opening 112 and has a space 113, 114 for the fixing collars 316, 326. Fastening devices 115, 117 are used to fasten the lid (not shown) to the base body 120. Additional openings 116, for example for mounting additional sensors, may be provided in the base body 120.

[0069] While exemplary embodiments are described above, it is not intended that these embodiments describe all possible forms of the invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the invention. Additionally, the features of various implementing embodiments may be combined to form further embodiments of the invention