Fluid vaporizer for a steam cooking device with a specific filter tube for filtering calcareous particles and steam cooking device

Abstract

One aspect of the invention relates to a fluid evaporator (8) for a steam cooking device (1), the fluid evaporator having a holding basin (10) for a fluid (3), a heating device (9) for evaporating the fluid (3) in liquid state in the holding basin (10), a filter (19) arranged in the holding basin (10), characterized in that the filter (10) is a calcareous particle filter which is configured as a filter tube (20), wherein the filter tube (20) has a filter opening (29) such that calcareous particles can be filtered in the event of a flow of the fluid (3) in liquid state through the filter tube (20). One aspect relates to a steam cooking device (1).

Description

Technical Field

[0001] One aspect of the invention relates to a fluid evaporator for a steam cooking apparatus. The fluid evaporator has a receiving basin for a liquid fluid. The fluid evaporator further includes a heating device for evaporating the liquid fluid in the receiving basin. Additionally, the fluid evaporator has a filter arranged in the receiving basin. Another aspect of the invention relates to a steam cooking apparatus having a fluid evaporator. Background Technology

[0002] Steam cooking appliances are known in a variety of designs. Steam cooking appliances typically have a preparation space or cooking space where food can be introduced and prepared. Steam is introduced into, or generated within, this cooking space, and the steam acts on the food to cook it. For this purpose, the steam cooking appliance has an evaporator or a fluid evaporator. A liquid fluid, such as water, can be provided in a water reservoir. The water reservoir can be a tank. This tank is fluidly connected to the evaporator. A pump can be connected between them. Thus, water is transported from the tank to the evaporator. The water reservoir can also be a domestic water network, which uses a line connected to the evaporator. A valve can be used to release or stop water from entering the inlet of the container.

[0003] Such steam cooking apparatus is known, for example, from EP 1 702 542 A2. To filter calcium particles, a filter is arranged within the transport pump itself. This filter is constructed as an annular element and is arranged in a relatively inaccessible location within the transport pump. Only two small filter windows with mesh are constructed there. The filtration efficiency, accessibility, and operation of the filter are all problematic.

[0004] Furthermore, an evaporator for a steam cooking apparatus is known from CN 208832428 U. There, a heating element is constructed at the bottom of the evaporator's container to evaporate a liquid fluid arranged within the container. The bottom of the container has an opening through which the fluid enters. Additionally, a filter is arranged inside the container. The filter is constructed as a plate-like element. This plate-like element is arranged approximately at a mid-height within the container, extending over the entire net width of the container's internal space. Specifically, it is arranged spaced apart from the opening in the bottom. The filter is configured to filter out larger water droplets remaining after evaporation. The reduced steam should thus be able to escape from the container through the opening. This filter is neither suitable nor conventionally intended for filtering out calcium particles used to form a liquid fluid. Summary of the Invention

[0005] The object of the present invention is to provide a fluid evaporator for a steam cooking apparatus, which, in an improved manner, prevents the inflow and outflow of contaminants in a liquid fluid.

[0006] This task is solved by the fluid evaporator and steam cooking apparatus according to the present invention.

[0007] One aspect of the invention relates to a fluid evaporator for a steam cooking apparatus. The fluid evaporator or evaporator has a receiving basin for a liquid fluid. Furthermore, the fluid evaporator also particularly has a heating device. The liquid fluid in the receiving basin is evaporated using the heating device. In addition, the fluid evaporator has a filter. The filter is arranged in the receiving basin. The filter of the fluid evaporator is conventionally constructed as a calcium particle filter. This filter is a filter tube. The filter tube has filter openings, so that calcium particles are filterable when the liquid fluid flows through the filter tube. This also means that the filter tube is conventionally constructed to filter calcium particles from the liquid fluid. Therefore, it is possible with the fluid evaporator, especially when the liquid fluid flows into the receiving basin, for calcium particles to be filtered out and thus not enter the receiving basin. In other words, it is particularly possible to filter out calcium particles formed when the liquid fluid in the receiving basin is evaporated, even when the liquid fluid flows out of the receiving basin. The calcium particles are then retained in the receiving basin or on the filter tube. This is particularly advantageous because when the liquid fluid is emptied or discharged, the calcium particles formed in this way cannot escape from the container. Therefore, it also avoids the circuit system coupled to the container being loaded with calcium particles from the container. This prevents clogging of such circuit system and / or damage to the function of other components connected in the circuit system by flow technology. Therefore, it is possible to achieve particularly effective filtration of calcium particles using a fluid evaporator with a specific filter arranged within the container itself. The specific geometry of the filter allows for a compact structure, which also enables effective filtration.

[0008] In this embodiment, the filter tube is constructed in a rod shape. This means that the height or length of the tube is greater than its diameter. In particular, the length of the filter tube is four times greater than its diameter. In particular, the length is five times, and especially at least ten times, greater than the diameter of the filter tube. Thus, to a certain extent, a thin, slender body is formed as the filter tube. This filter tube can be arranged and installed in a container in a very space-saving manner.

[0009] In this embodiment, the receiving basin has a bottom. At least one inlet and / or outlet for liquid fluid into or from the receiving basin is constructed in this bottom. A filter tube is arranged on the bottom, particularly in the area of ​​the inlet and / or outlet. Thus, the liquid fluid can flow directly through the filter tube when flowing into the receiving basin. Consequently, unwanted calcium particles are filtered out through the filter tube at the inlet and / or outlet and do not enter the actual receiving basin. Specifically, the area of ​​liquid fluid that should be evaporated does not enter the receiving basin. Particularly advantageously, filtration can be achieved through the filter tube as the liquid fluid is discharged or flows out of the receiving basin, as explained above. Therefore, larger calcium particles generated during evaporation in the fluid evaporator (which subsequently accumulate in the receiving basin) can be filtered out accordingly. The calcium particles are thus blocked and cannot enter the circuit system from the receiving basin through the inlet and / or outlet.

[0010] In this embodiment, the filter tube has at least one slit as a filter opening. More specifically, the filter tube has multiple individual slits. These slits are particularly effective at filtering calcium particles because they are relatively narrow on the one hand, and relatively elongated in terms of their geometry as slits, and constructed with a greater height than their width. Therefore, effective filtration can be achieved even with varying water levels. Because such slits extend at a specific height within the container, the inflow and outflow of liquid fluid can be unrestricted, and effective filtration of calcium particles can still be achieved even with varying water levels within the container.

[0011] In one embodiment, multiple slits are axially oriented relative to the longitudinal axis of the filter tube. This means that they are oriented along the height direction and therefore extend parallel to the longitudinal axis. The slits can be constructed equidistant from each other in the direction of rotation about the longitudinal axis of the filter tube. There can be at least two, especially at least three, especially at least four slits. The slits can have the same axial length. In one embodiment, they can all be constructed at the same axial position. This means that the lower end and / or the upper end of the slit are constructed at the same axial height position for all slits. In another embodiment, at least two slits can be constructed with different lengths and / or at different height positions. Thus, filtration can be performed well even in cases of highly variable water levels.

[0012] In particular, in this embodiment, at least one slit extends downward along its longitudinal axis to the bottom of the receiving basin. Therefore, inflow can be achieved even when the water level is very low, or when the liquid fluid in the receiving basin is at a very low level, and outflow is also possible. This also allows for the filtration of calcium particles.

[0013] In this embodiment, the filter tube is constructed to be open at its upper end. This is another advantageous embodiment because, especially during the filling process or when liquid fluid flows into the receiving basin, the liquid fluid can enter the receiving basin not only through the slits but also through the opening on the upper edge side of the filter tube. In this embodiment, the upper opening is sized such that the filtration of calcium particles is also achieved. In particular, the size of the opening can therefore be designed such that it corresponds to the width of the slits. Under this relationship, several smaller openings can also be constructed at this upper end of the filter tube. It is also possible that the opening at this end side of the filter tube is larger.

[0014] In the embodiment, at least one slit has a width between 1.7 mm and 2.2 mm. This is a particularly advantageous value range because larger calcium particles (which may form and remain in the containment basin, especially during the evaporation of liquid fluids) can thus be effectively filtered out before flowing out of the containment basin. These larger calcium particles can cause undesirable damage to the wiring system and the functional components connected within it. Therefore, blockage of the wiring and damage to valves in the wiring system can be particularly avoided.

[0015] Furthermore, the design of the slit width allows for the efficient filling of the container with liquid fluid and the efficient outflow of the liquid fluid from the container. Therefore, sufficiently rapid filling and sufficiently rapid discharge of the liquid fluid are also possible.

[0016] In advantageous embodiments, it is possible that at least two slits have different widths. With this design of different widths, calcium particles of different sizes can be filtered out using a single filter tube. Thus, it is possible, for example, that at least one slit has a width between 0.3 mm and 0.7 mm. At least one other slit may, for example, have a width between greater than 0.7 mm and less than 1.7 mm. At least one other slit may have a width between 1.7 mm and 2.2 mm. It is possible, in embodiments, that at least two slits with different widths are constructed on the filter tube. However, more than two slits (each having a width different from the other) may also be constructed on the filter tube. Therefore, a more efficient filtration process can be performed for calcium particles of different sizes.

[0017] The slits are specifically constructed on the wall or peripheral wall of the filter tube. The peripheral wall can be smooth. However, the peripheral wall can also have at least one recess. For example, the peripheral wall can have an axial groove further located radially inward. The slits can be constructed in the bottom of the groove. Thus, the slits are arranged recessedly or radially inwardly offset in the peripheral wall.

[0018] Typically, in addition to slits, other filter openings can also be constructed on the peripheral sidewalls. These can be, for example, circular, elliptical, or polygonal holes.

[0019] In this embodiment, the length of the filter tube is greater than the height between the inner side of the bottom of the receiving basin and the maximum filling horizontal edge above the receiving basin. Even when the water level in the receiving basin is very high, this embodiment provides a slit across almost the entire height of that water level. Thus, even at high water levels, it is possible to achieve highly advantageous filtration of calcium particles on the one hand, and to allow fluid to flow out of or into the receiving basin in a time-efficient manner on the other. This embodiment is also advantageous when the filter tube has a larger filter opening at its upper end (especially larger than the width of the slit). This prevents calcium particles, especially larger ones, from undesirably moving through the upper end via the filter tube into the circuit system. By extending the upper end, with its potentially larger end opening, just beyond the filling horizontal edge above the receiving basin, liquid fluid, and therefore especially water, cannot in any case enter the interior of the filter tube through this upper opening and subsequently flow out of the receiving basin from there. For example, when manufacturing a filter tube as an injection molded part, a design with a large opening at the upper end of the filter tube may occur. This corresponding length dimension design of the filter tube also prevents large calcium particles from flowing out of the receiving basin. Such a filter tube can be particularly inexpensive when manufactured as an injection molded part, especially when it has a simple end geometry at the upper end.

[0020] In an embodiment, the filter tube has a first tube section. This first tube section extends upward from the bottom of the receiving basin when arranged on it. In particular, in an embodiment, the first tube section extends outward beyond the upper horizontal filling edge of the receiving basin and thus protrudes upward beyond the receiving basin. Therefore, the first tube section extends outward from the receiving basin. This is especially true when the filter tube is constructed as described in the preceding paragraph.

[0021] In one embodiment, the filter tube has a second tube section extending into the inlet and / or outlet openings of the tubular structure. This allows the filter tube to be mechanically and reliably secured to the inlet and / or outlet openings. It also enables relatively simple fastening. In particular, the second tube section extends over the entire length or height of the inlet and / or outlet openings. This results in a particularly stable fastening of the filter tube, which is especially vertically upright.

[0022] This is particularly advantageous when the inlet and / or outlet openings are constructed as sleeves or similarly tubular structures. The inlet and / or outlet openings then extend downwards from the bottom of the receiving basin. The sleeve is particularly integrally constructed with the bottom of the receiving basin. Such a sleeve allows for a more stable and secure fastening of the individual filter tubes. In the embodiment, the receiving basin is integrally constructed. It can be made of plastic or metal. It can also be made of ceramic or glass.

[0023] In this embodiment, the filter tube is secured to a base that is independent of the filter tube itself in a non-destructive, releasable manner. In such an embodiment, the filter tube is thus a separate component relative to the receiving basin. This allows for a better individualized discussion of the individual components in terms of manufacturing and materials technology. Not only the manufacturability required, but also the functionality of these individual components can be better designed individually. Through the non-destructive, releasable mechanical connection, the filter tube can also be reversibly removed and reinstalled if necessary. Therefore, in the event of filter tube wear, for example, the filter tube can be replaced at any time without having to replace the entire module consisting of the filter tube and the receiving basin.

[0024] In this embodiment, the filter tube is secured to the inlet and / or outlet openings via a snap-fit ​​connection. This is also a very advantageous example, as it allows for simple and quick installation. Disassembly is also easily accomplished. Furthermore, the snap-fit ​​connection is also a very stable and robust mechanical connection. This allows for a very precise and secure placement of the filter tube at the bottom.

[0025] In this embodiment, the snap-fit ​​element is constructed on the filter tube. Specifically, the snap-fit ​​element is integrally constructed with it. Multiple snap-fit ​​elements may be constructed on the filter tube. For example, this type of snap-fit ​​element may be constructed on the lower end of the filter tube. They may be constructed as radially protruding elements. They may be constructed as rigid elements. They may also be constructed as radially deformable and / or radially spring-loaded snap-fit ​​elements.

[0026] In another embodiment, the filter tube may have additional snap-fit ​​elements. These additional snap-fit ​​elements may be constructed spaced apart from the upper and lower ends along the longitudinal axis of the filter tube. These additional snap-fit ​​elements may also be constructed on the peripheral sidewall of the filter tube. These additional snap-fit ​​elements may thus be oriented to protrude radially outwards. In particular, these snap-fit ​​elements may be constructed to be elastically deformable in the radial direction and / or capable of radially springing back. This design also allows for axially stable placement of the filter tube at the bottom. This also simplifies the installation of the filter tube, especially on a sleeve. In this embodiment (where the snap-fit ​​elements are constructed not only at the lower end of the filter tube, but also correspondingly offset upwards in the axial direction), a precise fit is achieved for the filter tube at the inlet and / or outlet openings. On one hand, the filter tube can thus snap onto the lower edge or lower corner of the inlet and / or outlet openings, and also onto the upper end of the inlet and / or outlet openings formed simultaneously through the inner side of the bottom. This enables axially fixed placement of the filter tube. Due to the radial deformability and / or the radially elastic spring-loaded arrangement of the snap-fit ​​elements, it is easy to introduce the filter tube into the inlet and / or outlet openings, and also to allow for movement through it. This is because the snap-fit ​​elements, at least those guided through, are radially pressed together and / or radially inward, and radially deformed and / or radially spring-loaded when exiting the inlet and / or outlet openings, thus enabling automatic snap-fitting.

[0027] Under this relationship, it is also possible that the peripheral wall of the filter tube has wall flaps that are formed into notches to a certain extent along the rotational direction of the longitudinal axis. In the embodiment, slits can be constructed along the rotational direction at the opposite ends of the flaps. Furthermore, a small free space relative to the remaining wall area of ​​the peripheral wall can also be formed at the lower end of the flaps. Thus, to a certain extent, radially spring-loaded and freely protruding flaps are integrally formed in the peripheral wall. At least one snap-fit ​​element of the filter tube can be integrally constructed on the flap. Thus, an example of how such radially spring-loaded snap-fit ​​elements can be constructed is realized. Under this relationship, multiple such flap strips can also be constructed in the peripheral wall of the filter tube.

[0028] In this embodiment, the second tube section of the upper snap-fit ​​element is disposed only abuttingly on the bottom. Viewed along the height direction or along the longitudinal axis of the filter tube, the second tube section snaps with the lower edge or lower rim of the tubular inlet and / or outlet opening. Specifically, these lower snap-fit ​​elements snap behind the lower edge of the tubular inlet and / or outlet opening.

[0029] In this embodiment, the filter tube and the receiving basin are inseparably connected. For example, a welded or adhesive connection can be used. In such an embodiment, the filter tube and the receiving basin can also be constructed from the same material. However, this is also possible when the filter tube and the separate receiving basin are coupled by a non-destructive, releasable connection. In this embodiment, the filter tube is constructed integrally. Thus, it can be simply implemented as a plastic component, for example. In this relationship, it can be implemented particularly as an injection-molded component. However, in this embodiment, the filter tube can also be made of metal. For example, it can be made of stainless steel. In such an embodiment, a corresponding metal sheet can be provided first. Then, corresponding slots can be added to the metal sheet. Additionally or alternatively, in such an embodiment, other geometries can also be implemented as filter openings. For example, circular or elliptical openings can be constructed on the peripheral sidewalls of the filter tube. In this embodiment, such a sheet can then be formed or rolled into a rod-shaped tube.

[0030] With the fluid evaporator according to the above aspects or its advantageous embodiments, less calcium residue remains in the container. This reduces or slows down complete calcification and prolongs the autonomy of the steam cooking appliance between the two decalcification processes. In embodiments, the filter tube can be constructed of a non-stick material. For example, this can be a specific plastic. In this case, the plastic can be, for example, PTFE (polytetrafluoroethylene). Furthermore, by using such a specific filter within the container itself, filling and evacuating can always be done in a relatively uniform manner, independent of the calcification state. Furthermore, crevice corrosion can be avoided, especially when the filter tube is made of plastic.

[0031] In this embodiment, the gap has an axial height or axial length between 30 mm and 40 mm. In particular, the gap has a related length between 34 mm and 36 mm.

[0032] In an embodiment, the filter tube, particularly the first upper tube section, is sized such that the portion of the filter tube protruding beyond the upper filling horizontal edge of the receiving basin has a protrusion between 8 mm and 15 mm, particularly between 8 mm and 12 mm.

[0033] Another aspect of the invention relates to a steam cooking apparatus. This steam cooking apparatus has a fluid evaporator according to the foregoing aspects or advantageous embodiments thereof.

[0034] The advantageous embodiments described above should be considered as advantageous embodiments of another independent aspect.

[0035] The terms "above", "below", "in front", "behind", "horizontal", "vertical", "depth direction", "width direction", and "height direction" are used to describe the position and orientation given during the routine use and positioning of a fluid evaporator or device.

[0036] Further features of the invention are described by the claims, drawings, and accompanying drawings. Features and combinations of features mentioned above in the specification, and features and combinations of features mentioned below in the description of the drawings and / or shown separately in the drawings, may be used not only in the separately described combinations, but also in other combinations or individually, without departing from the scope of the invention. Therefore, embodiments of the invention not explicitly shown and illustrated in the drawings, but which can be derived from the illustrated embodiments by individual combinations of features, are also considered included and disclosed. Therefore, embodiments and combinations of features that do not possess all the features of the originally drafted independent claims are also considered disclosed. Attached Figure Description

[0037] Embodiments of the present invention will then be described in detail with reference to the illustrative accompanying drawings. Wherein:

[0038] Figure 1 A schematic diagram of an embodiment of the steam cooking device in the sub-component is shown;

[0039] Figure 2 A schematic diagram of a sub-component of an embodiment of a fluid evaporator is shown;

[0040] Figure 3 It shows Figure 2 A perspective view of a partial area of ​​a component, the component having an additionally installed filter tube as a calcium particle filter;

[0041] Figure 4 With different Figure 3 The perspective shows that, according to Figure 3 The illustration; and

[0042] Figure 5 A side view of an embodiment of the filter tube of a fluid evaporator is shown;

[0043] In the accompanying drawings, identical or functionally identical elements are given the same reference numerals. Detailed Implementation

[0044] Figure 1An embodiment of a steam cooking apparatus 1 is illustrated in a very schematic diagram. Some of the components of the steam cooking apparatus 1 are shown here. The steam cooking apparatus 1 has a water reservoir 2. The water reservoir 2 can be its own tank or container. The tank or container can be arranged in the housing of the steam cooking apparatus 1. However, the water reservoir 2 can also be a domestic water supply network, etc. Liquid fluid 3, especially water, is located in the water reservoir 2. In addition, the steam cooking apparatus 1 has a wiring system 4. The wiring system 4 is connected to the water reservoir 2 by flow technology. The wiring system 4 may have at least one line 5. In this embodiment, the wiring system also has at least one valve 6 and a pump 7. In addition, the steam cooking apparatus 1 has an evaporator or fluid evaporator 8. The fluid evaporator 8 is connected to the wiring system 4 by flow technology. The fluid evaporator 8 is a separate component relative to the water reservoir 2. The liquid fluid 3 in the water reservoir 2 can be transported to the fluid evaporator 8 via the wiring system 4. On the other hand, the liquid fluid located in the fluid evaporator 8 can be transported back to the water reservoir 2 via the wiring system 4.

[0045] The fluid evaporator 8 has a heating device 9. The heating device allows liquid fluid to be evaporated in the receiving basin 10 of the fluid evaporator 8. The receiving basin 10 is a component of the fluid evaporator 8. Thus, externally... Figure 1 As can be seen, the steam cooking apparatus 1 has a preparation space or cooking space 11. Food can be routinely introduced into the preparation space or cooking space for preparation therein. Accordingly, steam generated by the fluid evaporator 8 can be introduced into the cooking space 11.

[0046] Figure 2 A three-dimensional schematic diagram illustrates an embodiment of the receiving basin 10 of the fluid evaporator 8. The receiving basin 10 is constructed as a shell. The receiving basin has side walls 10a and a bottom 12. This forms a receiving volume 13 for the liquid fluid 3. Connecting elements 14, particularly snap-fit ​​elements, are also schematically shown in the embodiment. The connecting elements are used for connection with the fluid evaporator 8. Figure 2 The lid or the upper cover, not shown, is connected in a non-destructive, releasable manner. The individual lid, in particular, is fastened to the receiving basin 10.

[0047] The bottom 12 of the receiving basin 10 has inlet and / or outlet openings 15. Liquid fluid 3 can flow from the line system 4 into the volume 13 through the inlet and / or outlet openings. On the other hand, liquid fluid 3 from the volume 13 can also flow out of the receiving basin 10 into the line system 4 through the inlet and / or outlet openings 15.

[0048] In this embodiment, the inflow and / or outflow opening 15 is configured as a tubular opening. The opening may therefore also be formed as, or accordingly referred to as, a sleeve 16. The sleeve 16 extends downward from the bottom 12.

[0049] Figure 3 A partial area of ​​the receiving basin 10 is shown in a perspective view. The receiving basin 10 has an upper maximum filling level edge 17 on its side wall 10a. The upper filling level edge 17 also represents the maximum filling level achievable for the liquid fluid 3 in the receiving basin 10. The upper filling level edge 17 is lower than the upper edge 18 of the side wall 10a. The upper edge 18 is the actual upper mechanical end or contour end of the side wall 10a.

[0050] In this embodiment, the fluid evaporator 8 has a filter 19. The filter 19 is an integral part of the fluid evaporator 8. The filter 19 is arranged in the receiving basin 10. The filter thus also extends within the volume 13. The filter 19 is here configured as a calcium particle filter. Therefore, calcium particles formed in the fluid evaporator 8 itself are conventionally filtered out. Calcium particles guided to the fluid evaporator 8 via the line system 4 can also be filtered out. Thus, calcium particles do not enter the volume 13. It is particularly advantageous that the filter 19 prevents larger calcium particles formed in the fluid evaporator 8 during the evaporation of the liquid fluid from escaping from the volume 13 and from entering the line system 4.

[0051] Filter 19 is constructed as filter tube 20. The filter tube is here constructed as a thin, rod-shaped filter. Filter tube 20 has a longitudinal axis A. (As in...) Figure 3 As can be seen, the filter tube 20 is arranged directly on the bottom 12, especially in the area of ​​the inflow and / or outflow opening 15. The filter tube protrudes vertically upward from the bottom 12.

[0052] In this embodiment, the filter tube 20 is an integral component. The component is specifically constructed as a separate part relative to the receiving basin 10. In this embodiment, the filter tube 20 is preferably secured to the bottom 12, particularly to the inlet and / or outlet opening 15, and thus to the sleeve 16, by a non-destructive, releasable mechanical connection. For example, a snap-fit ​​connection may be provided here. In this embodiment, the snap-fit ​​connection can be formed by a snap-fit ​​element 21, as it is located in… Figure 3 As can be seen in the image. A snap-fit ​​connection 21 is constructed on the lower end 22 of the filter tube 20. The snap-fit ​​connection is located radially away from the peripheral sidewall 23 of the filter tube 20. These snap-fit ​​elements 22 enable a snap-fit ​​connection with the lower edge 24 of the sleeve 16. In an embodiment, the filter tube 20 may have additional snap-fit ​​elements 25 (…). Figure 4 These additional snap-fit ​​elements are also constructed on the peripheral sidewall 23 of the filter tube 20. They also protrude radially outward. (As shown in...) Figure 4As can be seen in the perspective view (which shows the interior of the volume 13 of the receiving basin 10), in this embodiment, the axially upward snap-fit ​​elements 25 snap onto the inner side 12a of the bottom 12. These snap-fit ​​elements thus snap onto the upper end or upper edge 26 of the sleeve 16. This embodiment also allows for an axially fixed position of the filter tube 20. It can be configured such that the snap-fit ​​elements 21 and / or 25 are arranged perpendicular to the longitudinal axis A and therefore radially elastically deformable and / or radially spring-loaded. This also allows for the easy guidance of the filter tube 20 through or through the inflow and / or outflow opening 15 or the sleeve 16. For example, in such an embodiment, the filter tube 20 can be introduced into the sleeve 16 via the lower end 27 using the upper end 27 and moved upwards until reaching... Figure 3 and Figure 4 The end state or end position is shown. In the end position, a snap-fit ​​state is subsequently constructed as well.

[0053] Such an external Figure 3 As can be seen, in this embodiment, the filter tube 20 is configured to protrude upwards beyond the upper edge 17 by a length or height. In particular, as in... Figure 3 As can be seen, this is achieved using a protrusion a between 8 mm and 12 mm. This is especially true when a filter opening 28 is constructed at the upper end 27 of the filter tube 20, with a correspondingly larger azimuth width compared to the slit width used for filtering calcium particles in the peripheral wall 23. Figure 4 As can be seen in the image. Through this larger filter opening 28, liquid fluid 3 can also enter the container volume 13 via the filter opening 28 when filling the container basin 10.

[0054] exist Figure 3 and Figure 4 In addition, a seal 29 can be seen. A cover (not shown) of the fluid evaporator 8 is located on this seal 29. Thus, an interface is formed in a sealed manner between the cover and the receiving basin 10.

[0055] In the embodiment (where the size of the larger filter opening 28 at the upper end 27 of the filter tube 20 is also smaller than or equal to the width of the conventionally provided slits for filtering calcium particles in the peripheral sidewall 23), the protrusion a cannot be constructed. The filter tube 20 can also be made shorter and terminate, for example, at or below the upper filling horizontal edge 17.

[0056] In one embodiment, the filter tube 20 has a first tube section 20a, such as in Figure 3 and Figure 4As can be seen in the image. The first tube section 20a is a tube section extending within the volume 13. Therefore, this is a tube section that bulges upward from the bottom 12. In an embodiment, the filter tube 20 further has a second tube section 20b ( Figure 3 This is a pipe section that connects directly downwards to the first pipe section 20a and extends within the sleeve 16. In particular, snap-fit ​​elements 21 and / or 25 are constructed on this second pipe section 20b.

[0057] Generally, the filter tube 20 is introduced into the sleeve 16. As a result, the filter tube can remain very stable.

[0058] Particularly advantageous is the filter tube 20 (as in...) Figure 5 (As shown in the view) The peripheral sidewall 23 has at least one, and more particularly a plurality of, slits 29. The slits 29 are conventionally constructed and provided for filtering calcium particles. The slits 29 (as shown in the view) Figure 5 As can be seen, the slits 29 have an azimuth width b, which in this embodiment is between 1.7 mm and 2.2 mm. It is possible that multiple individual slits 29 have the same width b. However, it is also possible that at least one of the multiple slits 29 has a different width b. It is also possible that the slits 29 have a width b between 0.3 mm and 0.7 mm. Alternatively or additionally, other slits 29 may have a width b between greater than 0.7 mm and less than 1.7 mm. Alternatively or additionally, other slits 29 may exist with a width b between 1.7 mm and 2.2 mm. As can be seen, the slits 29 are oriented axially. It is possible that multiple slits 29 have the same axial length. Multiple slits 29 may all be arranged in the same axial position in this embodiment. However, multiple slits may also be arranged in different axial positions and / or have different axial lengths. Accordingly, this may be the case in the case of multiple slits 29, and correspondingly in the case of at least one slit 29, compared to the other slits 29. As can be seen from the outside, the slit 29 preferably has an axial length or axial height between 30 mm and 40 mm. Preferably, the slit extends only in the upper pipe section 20a. Thus, the slit preferably terminates at the axial position of the preferably present upper snap-fit ​​element 25.

[0059] As in Figure 4 As can be seen in the illustration, the cross-sectional geometry of the filter tube 20, particularly in the first tube section 20a, is constructed with multiple, specifically three, hollow radial segments. These three radial segments are connected to recesses 30 located therebetween, which are further radially inward. Slits 29 are constructed in the recesses 30, which are further radially inward, within the peripheral sidewall 23. In particular, the slits 29 are constructed at the bottom of the innermost radial recesses of the recesses 30.

[0060] Such an external Figure 5 As can also be seen, particularly in this embodiment, the upper latching element 25 is configured to be radially spring-back and / or radially elastically deformable. For this purpose, a flap strip 31 is constructed in the peripheral sidewall 23. The flap strip is radially spring-back. The latching element 25 is constructed on the axially lower end of the spring tongue or flap strip 31.

[0061] Alternatively, in another embodiment, the geometry of the peripheral sidewall 23 of the filter tube 20 may be implemented differently, and three radial segments with recesses 30 located therebetween may not be constructed. It is also possible that two continuous slits 29 along the circumferential direction of the longitudinal axis A constitute the bounding free space of this leaf strip 31. These slits 29 may then be connected at the lower end of the leaf strip 31 by additional gaps in the peripheral sidewall 23, thereby exposing the associated leaf (which is angularly opposed and bounded by the two slits 29) at the lower end and thus allowing it to spring radially upwards.

[0062] List of reference numerals

[0063] 1 Steam cooking device

[0064] 2 water storage tanks

[0065] 3 fluids

[0066] 4-line system

[0067] 5 lines

[0068] 6 valves

[0069] 7 pumps

[0070] 8 Evaporators

[0071] 9 Heating devices

[0072] 10 containers

[0073] 10a sidewall

[0074] 11 Cooking Spaces

[0075] 12 bottom

[0076] 12a inner side

[0077] 13 Capacity

[0078] 14 Connecting elements

[0079] 15 outflow opening

[0080] 16 sleeves

[0081] 17 top edge

[0082] 18 upper edge

[0083] 19 filters

[0084] 20 filter tubes

[0085] 20a First Pipe Section

[0086] 20b Second Pipe Section

[0087] 21 snap-fit ​​components

[0088] 22 lower end

[0089] 23-week lateral wall

[0090] 24 lower edge

[0091] 25 snap-fit ​​components

[0092] 26 upper edge

[0093] 27 Upper end

[0094] 28 filter openings

[0095] 29 gaps

[0096] 30 grooves

[0097] 31 pages

[0098] a protruding part

[0099] b width

[0100] A. Vertical axis.

Claims

1. A fluid evaporator (8) for a steam cooking apparatus (1), the fluid evaporator having a receiving basin (10) for a fluid (3), a heating device (9) for evaporating the liquid fluid (3) in the receiving basin (10), and a filter (19) arranged in the receiving basin (10), characterized in that, The filter (19) is a calcium particle filter constructed as a filter tube (20), wherein the filter tube (20) has a filter opening so as to filter calcium particles when a liquid fluid (3) flows through the filter tube (20), the filter tube (20) has a length greater than the height between the bottom (12) of the receiving basin (10) and the maximum filling horizontal edge (17) above the receiving basin (10), wherein the peripheral sidewall (23) of the filter tube (20) has at least one radially inwardly recessed axially extending groove (30), and wherein the filter opening is constructed as a slit arranged at the bottom of the groove (30).

2. The fluid evaporator (8) according to claim 1, characterized in that, The container (10) has a bottom (12) in which an inflow and / or outflow opening (15) for a liquid fluid (3) is constructed, wherein a filter tube (20) is arranged on the bottom (12) in the region of the inflow and / or outflow opening (15), such that the liquid fluid (3) flows through the filter tube (20) when it flows in through the inflow and / or outflow opening (15), and / or flows through the filter tube (20) when the liquid fluid (3) flows out of the container (10).

3. The fluid evaporator (8) according to claim 1 or 2, characterized in that, The filter tube (20) has a slit (29) as a filter opening.

4. The fluid evaporator (8) according to claim 3, characterized in that, The slit (29) is axially oriented relative to the longitudinal axis (A) of the filter tube (20).

5. The fluid evaporator (8) according to claim 3, characterized in that, At least one gap (29) has a width (b) between 1.7 mm and 2.2 mm.

6. The fluid evaporator (8) according to claim 1, characterized in that, The filter tube (20) has a first tube section (20a) that extends upward from the bottom (12) of the receiving basin (10), wherein the first tube section (20a) extends beyond the maximum filling horizontal edge (17) above the receiving basin (10).

7. The fluid evaporator (8) according to claim 1 or 6, characterized in that, The filter tube (20) has a second tube section (20b) that extends into the inflow and / or outflow opening (15) of the tubular structure.

8. The fluid evaporator (8) according to claim 7, characterized in that, The filter tube (20) is nondestructively and releasably secured to a separate bottom (12) relative to the filter tube.

9. The fluid evaporator (8) according to claim 8, characterized in that, The filter tube (20) is fastened to the inlet and / or outlet opening (15) by a snap-fit ​​connection.

10. The fluid evaporator (8) according to claim 9, characterized in that, The second pipe section (20b) is attached to the bottom (12) by means of the upper snap-fit ​​element (25) of the snap-fit ​​connection, and is snapped behind the lower edge (24) of the tubular inlet and / or outlet opening (15) by means of the lower snap-fit ​​element (21) of the snap-fit ​​connection.

11. The fluid evaporator (8) according to claim 1 or 2, characterized in that, The filter tube (20) and the container (10) are inseparably connected.

12. The fluid evaporator (8) according to claim 1 or 2, characterized in that, The filter tube (20) is constructed as a single unit.

13. The fluid evaporator (8) according to claim 1 or 2, characterized in that, The filter tube (20) is made of plastic or metal.

14. The fluid evaporator (8) according to claim 7, characterized in that, The second pipe section extends over the entire length of the inlet and / or outlet opening (15) configured as a sleeve (16).

15. The fluid evaporator (8) according to claim 11, characterized in that, The filter tube (20) and the container (10) are welded or bonded together.

16. A steam cooking apparatus (1) having a fluid evaporator (8) according to any one of claims 1 to 15.

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