Continuous-flow heater

Abstract

The invention relates to a continuous-flow heater comprising a body (1) and a channel (2) extending in the body (1) and carrying water, wherein an opening (4) forming an access to the channel (2) and closed by a closure element (3) is provided on the body (1), wherein the closure element (3) has a heat transfer region (3.1) arranged in the region of the opening (4) and being in contact with the water. According to the invention it is provided that the closure element (3) is formed to be plate-shaped and, particularly preferably, to be provided with a stamping forming the heat transfer region (3.1).

Description

[0001] The invention relates to continuous-flow heater according to the preamble of patent claim 1.

[0002] A continuous-flow heater of a similar (but not identical) type to the type mentioned at the beginning is known from the document EP 2 489 956 B1. There, a continuous-flow heater is shown which has a body and a channel extending in the body and carrying water. An opening forming an access to the channel and closed by a closure element is provided on the body, wherein the closure element has a heat transfer region arranged in the region of the opening and being in contact with the water. Furthermore reference is made to the document DE 10 2013 021 286 A1 which shows the same features as the aforementioned document in addition to a closure element that is formed to be plate-shaped.

[0003] It is the object of the invention to improve a continuous-flow heater of the type mentioned above. In particular, a continuous-flow heater constructed in a particularly simple manner is to be created.

[0004] This object is achieved with a continuous-flow heater of the type mentioned above by the features listed in the characterizing part of patent claim 1.

[0005] According to the invention, it is thus provided that the plate-shaped closure element is formed to be provided with a stamping forming the heat transfer region.

[0006] In other words, the continuous-flow heater according to the invention is thus characterized in that the closure element and the heat transfer region are formed in one piece by stamping. As a result, the continuous-flow heater can be manufactured in a particularly simple and cost-effective manner while still maintaining high energy efficiency.

[0007] Again in other words, it is thus particularly preferably provided that the closure element has a projection extending into the opening and comprising the heat transfer region. It is thus provided that the closure element is bulged into the opening, which has the additional advantage that, on the one hand, a large heat transfer region is created, and, on the other hand, the bulge also provides for stiffening of the closure element.

[0008] Other advantageous refinements of the continuous-flow heater according to the invention arise from the dependent patent claims.

[0009] For the sake of completeness, reference is also made to the documents US 6,892, 96 B1, DE 10 2012 207305 A1 and WO 2014 / 005708 A1.

[0010] The continuous-flow heater according to the invention, including its advantageous refinements according to the dependent patent claims, is explained in more detail below by means of the graphic representation of preferred exemplary embodiments.

[0011] In the figures Figure 1shows a cross-section of a first embodiment of the continuous-flow heater according to the invention with its body and the closure element; Figure 2shows a perspective view of the continuous-flow heater shown in Figure 1 with a total of four electronic components; Figure 3shows a top view of the continuous-flow heater according to Figure 1 with the closure element 3 removed, looking into the channel 2; Figure 4shows a perspective view of the closure element according to Figure 1 (without the electronic components); Figure 5shows a cross-section of the closure element according to Figure 4; Figure 6shows a cross-section of a second, particularly simple continuous-flow heater without the stamping; and Figure 7shows a perspective view of the closure element according to Figure 6 (again without the electronic components).

[0012] The continuous-flow heater shown in the figures initially consists in a known manner of, among other things, a body 1 and a water-carrying channel 2 extending in the body 1. In this connection, an opening 4 forming an access to the channel 2 and closed by a closure element 3 is provided on the body 1, wherein the closure element 3 has a heat transfer region 3.1 arranged in the region of the opening 4 and being in contact with the water. In addition the closure-element 3 is formed to be plate-shaped.

[0013] It is essential for the continuous-flow heater according to the invention that the plate-shaped closure element 3 is formed to be (compare Figures 1 to 5) provided with a stamping forming the heat transfer region 3.1. Figures 6 and 7 show a continuous flow heater without the mentioned stamping and therefore not being part of the invention.

[0014] As can be seen from Figures 1 and 2, it is provided in a particularly preferred manner that the heat transfer region 3.1, on the one hand, and an arrangement region 3.2 for an electronic component 5, on the other hand, are provided on the closure element 3. In more concrete terms, it is thus preferably provided that at least one heat-emitting electronic component 5 is arranged on the closure element 3. Fixing the component 5 to the closure element 3 is preferably carried out by means of a spring-loaded clamping strip (not shown separately). In the solution according to Figures 6 and 7, the electronic component 5 is arranged directly on the heat transfer region 3.1.

[0015] As is readily apparent in particular from Figures 1 and 6, heat released by the electronic component 5 can thus be dissipated via the closure element 3 directly to the water flowing through the channel 2.

[0016] It is further particularly preferred here that the water-carrying channel 2 is arranged between a cold water connection and an electrical heating device (the cold water connection and the heating device are not shown separately). This measure ensures that the electronic component 5 comes into contact with the coldest water available in the continuous-flow heater and in this way can dissipate as much heat as possible or be cooled as well as possible.

[0017] As can be seen in particular from Figure 3 (but can ultimately also be derived from Figure 7), it is preferably provided that for a particularly intensive heat transfer, the opening 4 is formed to be elongated and to extend along the channel 2. More precisely, it is provided in a particularly preferred manner that a length of the opening 4 extending along the channel 2 corresponds to at least three times a width of the channel 2.

[0018] Furthermore, in order to improve the heat transfer, but also to increase the pressure stability of the closure element 3 in the solution according to Figures 1 to 5, it is preferably provided that the stamping forming the heat transfer region 3.1 is formed extending over the entire opening 4. In addition, it is preferred that the channel 2 is formed to be unobstructed by the heat transfer region 3.1.

[0019] Furthermore, it is preferably provided that the closure element 3 is formed from metal.

[0020] A further particularity is that the body 1 is preferably formed from plastics. Furthermore, it is preferably provided that a sealing element 6, which preferably completely encloses the opening 4, is arranged between the body 1 and the closure element 3.

[0021] To implement a simple assembly, it is further preferably provided that the body 1 and the closure element 3, in particular a fastening region 3.3 of the closure element 3, are formed to be screwed together (preferably with self-tapping screws). In this case, the heat transfer region 3.1 is preferably located completely within the fastening region 3.3.

[0022] Furthermore, with reference in particular to Figures 4 and 5, it is preferably provided that the arrangement region 3.2 is formed with a flat surface. Finally, it is also preferably provided that the arrangement region 3.2 in the solution according to Figures 1 to 5 is formed at an angle to the fastening region 3.3 of the closure element 3. As already stated above, in the solution according to Figures 6 and 7, the heat transfer region 3.1 and the arrangement region 3.2 practically coincide.REFERENCE LIST

[0023] 1body 2channel 3closure element 3.1heat transfer region 3.2arrangement region 3.3fastening region 4opening 5electronic component 6sealing element

Claims

1. A continuous-flow heater comprising a body (1) and a channel (2) extending in the body (1) and carrying water, wherein an opening (4) forming an access to the channel (2) and closed by a closure element (3) is provided on the body (1), wherein the closure element (3) has a heat transfer region (3.1) arranged in the region of the opening (4) and being in contact with the water, wherein the closure element (3) is formed to be plate-shaped, characterized in that the plate-shaped closure element (3) is formed to be provided with a stamping forming the heat transfer region (3.1).

2. The continuous-flow heater according to claim 1, characterized in that the opening (4) is formed elongated and extending along the channel (2).

3. The continuous-flow heater according to any one of claims 1 or 2, characterized in that a length of the opening (4) extending along the channel (2) corresponds to at least three times a width of the channel (2).

4. The continuous-flow heater according to any one of claims 1 to 3, characterized in that the stamping forming the heat transfer region (3.1) is formed extending over the entire opening (4).

5. The continuous-flow heater according to any one of claims 1 to 4, characterized in that the closure element (3) has an arrangement region (3.2) for an electronic component (5), wherein the heat transfer region (3.1), on the one hand, and the arrangement region (3.2) for an electronic component (5), on the other hand, are provided on the closure element (3).

6. The continuous-flow heater according to any one of claims 1 to 5, characterized in that a heat-emitting electronic component (5) is arranged on the closure element (3).

7. The continuous-flow heater according to any one of claims 1 to 6, characterized in that it comprises a cold water connection and an electric heating device, the water-carrying channel (2) being arranged between said cold water connection and said electric heating device.

8. The continuous-flow heater according to any one of claims 1 to 7, characterized in that the closure element (3) is formed from metal.

9. The continuous-flow heater according to any one of claims 1 to 8, characterized in that a sealing element (6) preferably completely enclosing the opening (4) is arranged between the body (1) and the closure element (3).

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