Household cooking utensils

Abstract

The present invention relates to a household cooking appliance (1), particularly a household oven, having a cooking chamber (2) for receiving food to be cooked, a cooking chamber divider (19) removable from the cooking chamber (2) for dividing the cooking chamber (2) into different cooking chamber sections (20, 21), and an identification device (22) for identifying the cooking chamber divider (19) received in the cooking chamber (2), wherein the identification device (22) is configured to adapt the operating state of the household cooking appliance (1) to the identified cooking chamber divider (19).

Description

Technical Field

[0001] This invention relates to a household cooking appliance. Background Technology

[0002] Household cooking appliances, such as ovens, include a cooking chamber surrounded by a muffle oven or oven muffler, with a door movably stopped in the cooking chamber. The cooking chamber can be horizontally divided into at least two spaced-apart sections by means of a so-called cooking chamber divider, which can be used independently of each other.

[0003] DE 4217545A1 describes an electric baking and grilling oven having a cooking chamber that can be closed by a door, the cooking chamber being divisible into two separate cooking chamber areas by a plate that can be inserted into the cooking chamber. The plate, which can be connected to a power source, is equipped with a heating element for bottom heating of the upper cooking chamber area, wherein this cooking chamber area has a heating element on the top side for top heating. Summary of the Invention

[0004] Against this background, the objective of the present invention is to provide an improved household cooking appliance.

[0005] Therefore, a household appliance, particularly a household oven, is proposed, having a cooking chamber for receiving food to be cooked, a cooking chamber divider removable from the cooking chamber for dividing the cooking chamber into different cooking chamber sections, and an identification device for identifying the cooking chamber divider received in the cooking chamber, wherein the identification device is configured to adapt the operating state of the household cooking appliance to the identified cooking chamber divider.

[0006] Because a recognition device is provided and the operating state of the household cooking appliance can be adapted to the recognized cooking compartment partition, manual adjustment of the operating state can be eliminated. This can be achieved, for example, by ensuring that if the cooking compartment partition is in the cooking chamber, only certain cooking processes or programs suitable for operation with the cooking compartment partition can be performed.

[0007] The household cooking appliance can be, for example, a stove, oven, microwave oven, double oven, or similar appliance. Preferably, the door is pivotally stopped at the cooking chamber. For this purpose, hinges can be provided. Alternatively, the door can also be mounted on a baking rack or similar object that can be pulled out from the cooking chamber. In this case, the door is not pivotally stopped at the cooking chamber, but can move linearly relative to the cooking chamber. The cooking chamber is preferably cubic or cuboid in shape and includes a bottom, a top opposite the bottom, a rear wall opposite the closed door, and two side walls opposite each other.

[0008] The cooking chamber partition is specifically designed to horizontally divide the cooking chamber into a first cooking chamber section or an upper cooking chamber section and a second cooking chamber section or a lower cooking chamber section. The cooking chamber sections can be used independently of each other. The cooking chamber partition is particularly an active cooking chamber partition. "Active" here is particularly understood to mean that the cooking chamber partition itself has a function, such as a heating function. "Active" particularly means having electrical and / or electronic components.

[0009] The identification device can be part of the control system of a household cooking appliance. Specifically, the identification device is at least effectively connected or coupled to the control system. The identification device is particularly configured to identify or detect whether the cooking compartment partition is in the cooking compartment. The operating status is adjusted accordingly based on whether the cooking compartment partition is in the cooking compartment.

[0010] For example, if the identification device detects that no cooking chamber partition is present in the cooking chamber, the household cooking appliance operates in normal mode. Conversely, if the identification device detects a cooking chamber partition, it can, for example, perform a cooking process or program that heats different sections of the cooking chamber differently.

[0011] The identification device, with the aid of a control device, is particularly suitable for adapting to or influencing the operating status of household cooking appliances. The "adaptation" of the operating status of the household cooking appliance to the identified cooking compartment partition here specifically means that the appliance operates differently or outputs different display options depending on whether the cooking compartment partition is in the cooking compartment.

[0012] In one embodiment, the identification device is configured to identify the cooking compartment partition in a mechanical and / or electronic manner.

[0013] Mechanical identification can be achieved, for example, by means of one or more switches. These switches can be actuated by different push rods or push rod lengths. The number of switches is arbitrary. Electronic identification can be achieved, for example, by resistance measurement at electrical and / or electronic components of the cooking compartment partition. Electronic identification can also be achieved by means of sensors.

[0014] In another implementation, the operating status of a household cooking appliance includes the cooking process and / or display options.

[0015] For example, the cooking process or cooking procedure can be adapted so that temperature control is performed differently when the cooking chamber partition is present compared to when it is not. Display options can be shown, for example, on the display screen of the household cooking appliance. The display screen can, for example, show whether the cooking chamber partition is in the cooking chamber. If necessary, the identification device can also identify different accessory units of the cooking chamber partition and distinguish them from each other, accordingly changing or adapting their operating states.

[0016] In another embodiment, the cooking chamber partition has a base unit that is movably guided on a guide rail in the cooking chamber.

[0017] The guide rails are preferably arranged laterally on the side wall of the cooking chamber. The guide rails can be removed from the cooking chamber. Each side wall is equipped with such a guide rail. The base unit has a frame-shaped base support that is guided on the guide rails. The base support preferably has a central through-hole in which electrical and / or electronic components, such as heating elements, are received.

[0018] In another embodiment, the base unit has electrical and / or electronic components, particularly heating elements, wherein the identification device is configured to identify the electrical and / or electronic components.

[0019] As mentioned above, electrical and / or electronic components can be heating elements. However, electrical and / or electronic components can also be sensors or similar components. The identification device is specifically designed for detecting or identifying electrical and / or electronic components in a non-contact manner.

[0020] In another embodiment, the identification device is configured to perform electrical resistance measurements at electrical and / or electronic components for the purpose of identifying the electrical and / or electronic components.

[0021] For example, the electrical and / or electronic components have plugs that connect with corresponding mating plugs when the cooking chamber partition is pushed into the cooking chamber. Different electrical and / or electronic components can be identified by means of electrical resistance measurement. For example, multiple basic units with different electrical and / or electronic components can be provided, differing from each other, for example, in their heating power. The identification device is then provided to distinguish the different basic units from one another.

[0022] In another embodiment, the cooking chamber partition has accessory units, particularly an isolation unit, a grilling unit, and / or a pizza baking unit, which are detachably connected to the base unit.

[0023] Multiple different accessory units can be provided. The accessory units are preferably plate-shaped. For example, the accessory units can be mounted on the base unit. Alternatively, multiple accessory units can be mounted on the base unit simultaneously.

[0024] In another embodiment, the base unit has connecting elements, particularly guide rails, by means of which the accessory unit is detachably connected to the base unit.

[0025] Preferably, two such guide rails are provided, which are laterally mounted on the aforementioned base support of the base unit. The guide rails may be C-shaped or U-shaped in cross-section. Depending on requirements, one of the accessory units can be pushed into the connecting element of the base unit in a drawer-like manner, thereby connecting the corresponding accessory unit to the base unit. The connection between the corresponding accessory unit and the base unit is form-locked. The form-locked connection is created by the mutual engagement or rear engagement of at least two connecting mating parts. The form-locked connection can be detached at will.

[0026] In another embodiment, the identification device is configured to identify the basic unit and / or accessory unit.

[0027] The identification device is particularly capable of identifying whether the base unit is pushed into the cooking chamber with or without the accessory unit. Therefore, it can, for example, identify and prevent the cooking chamber partition from operating without the accessory unit.

[0028] In another embodiment, the identification device is configured to identify the construction form of the accessory unit and adapt the operating state of the household cooking appliance to the identified construction form.

[0029] The term "construction form" or "type" of the accessory unit is understood here in particular to mean that each accessory unit is capable of having the function associated with it, such as the function of an isolation unit, a grilling unit, and / or a pizza baking unit. Therefore, different construction forms have different functions.

[0030] Other possible implementations of the household cooking appliance include combinations of features or implementations not explicitly mentioned but described above or below in relation to the embodiments. Here, those skilled in the art may also add individual aspects as improvements or supplements to the corresponding basic form of the household cooking appliance. Attached Figure Description

[0031] Other advantageous constructions and aspects of this household appliance are the subject of the dependent claims and the embodiments of the household cooking appliance described below. The household cooking appliance will now be described in detail with reference to the accompanying drawings and preferred embodiments.

[0032] Figure 1 A schematic perspective view showing one embodiment of a household cooking appliance;

[0033] Figure 2 It shows according to Figure 1 Another schematic perspective view of household cooking appliances;

[0034] Figure 3 It shows according to Figure 1 A schematic front view of a household cooking appliance;

[0035] Figure 4 It shows the method for following Figure 1 A schematic perspective view of one embodiment of a cooking compartment partition for a household cooking appliance;

[0036] Figure 5 It shows the method for following Figure 4 A schematic perspective view of one embodiment of the basic unit of the cooking room partition;

[0037] Figure 6 It shows the method for following Figure 4 A schematic perspective view of one embodiment of the accessory unit of the cooking compartment partition; and

[0038] Figure 7 It shows the method for following Figure 4 A schematic perspective view of another embodiment of the accessory unit of the cooking compartment partition.

[0039] Unless otherwise specified, identical elements or elements with the same function are given the same reference numerals in the accompanying drawings. Detailed Implementation

[0040] Figure 1 A schematic perspective view of one embodiment of a household cooking appliance 1 is shown. The household cooking appliance 1 can be a stove, oven, microwave oven combination oven, double oven, or similar appliance. The household cooking appliance 1 has a cooking chamber 2, which can be closed by means of a door 3. The cooking chamber 2 can also be referred to as a muffle oven or oven muffler. The cooking chamber 2 can be arranged inside the housing of the household cooking appliance 1.

[0041] The gate 3 is in Figure 1The door is shown in the closed position. The door 3 can be closed or opened by pivoting about a pivot axis located at the lower end of the door 3 or at the lower edge 4 of the door 3. Alternatively, the door 3 can be laterally stopped at the cooking chamber 2. Furthermore, the door 3 can be mounted on a baking rack that can be pulled out of the cooking chamber 2. However, the movement of the door 3 when it is open can be arbitrarily selected. This means that, in principle, the door 3 can perform any movement when it is opened.

[0042] A handle 6 may be provided on the upper section or upper edge 5 of the door 3. However, the door 3 may also be without a handle. The cooking chamber 2 has a bottom 7, a top 8 opposite the bottom 7, a rear wall 9 opposite the closed door 3, and two side walls 10 and 11 opposite each other. The cooking chamber 2 is preferably cuboid or cubic. The cooking chamber 2 can be made of metal, especially steel plate.

[0043] Furthermore, the household cooking appliance 1 includes operating knobs 13 and 14 disposed on a switch panel or control panel 12. The operating knobs 13 and 14 may, for example, be rotatable. A control device 15, shown only schematically, may be disposed on the back side of the control panel 12 for controlling the household cooking appliance 1. The control device 15 may be an adjustment device and / or a control device. Additionally, a display screen 16 may be disposed on the control panel 12. The operating status of the household cooking appliance 1 can be displayed by means of the display screen 16. For example, the temperature set by means of the operating knobs 13 and 14 can be displayed by means of the display screen 16.

[0044] The household cooking appliance 1 or cooking room 2 is assigned a coordinate system with a width direction (x), a height direction (y), and a depth direction (z). The x, y, and z directions are oriented perpendicularly to each other. The x direction is oriented from side wall 10 towards side wall 11. The y direction is oriented from bottom 7 towards top 8. The z direction is oriented from rear wall 9 towards the closed door 3.

[0045] Figure 2 Another schematic perspective view of the household cooking appliance 1 is shown. Figure 3 A schematic front view of the household cooking appliance 1 is shown. See also the following... Figure 2 and Figure 3 .

[0046] Guide rails 17 and 18 are provided at the two side walls 10 and 11, by means of which the cooking chamber partition 19 is held in the cooking chamber 2. A first guide rail 17 and a second guide rail 18 are provided. The guide rails 17 and 18 are also suitable for carrying, for example, a baking pan. The cooking chamber partition 19 can be removed from the cooking chamber 2.

[0047] The cooking chamber partition 19 divides the cooking chamber 2 into an upper cooking chamber section or a first cooking chamber section 20 and a lower cooking chamber section or a second cooking chamber section 21. Therefore, the cooking chamber partition 19 horizontally divides the cooking chamber 2 into a first cooking chamber section 20 and a second cooking chamber section 21. Here, "horizontally" means a plane unfolded by the x-direction (x) and the z-direction (z).

[0048] Furthermore, the household cooking appliance 1 includes an identification device 22 for identifying the cooking compartment partition 19. This specifically means that the identification device 22 is configured to identify whether the cooking compartment partition 19 is located within the cooking compartment 2. This identification can be achieved, for example, mechanically and / or electronically. "Mechanical" identification can be achieved, for example, by means of a switch and / or a lever. This can be achieved, for example, by using appropriate sensors or by using resistance measurements.

[0049] The identification device 22 can be part of the control device 15. The identification device 22 is at least effectively connected to the control device 15, such that the identification device 22 is configured to adapt the operating state of the household cooking appliance 1 to the identified cooking compartment partition 19. This specifically means that adjustment of the operating state of the household cooking appliance 1 is only necessary when the cooking compartment partition 19 is in the cooking chamber 2 and is identified by the identification device 22.

[0050] Currently, "adjusting" the operating state is specifically understood to mean, for example, that by correspondingly manipulating the heating element, the cooking process or cooking procedure can be affected in such a way that only the first cooking chamber section 20 is actively heated while the second cooking chamber section 21 is not heated. It is also possible to adapt the temperature control to the identified cooking chamber partition 19 during the cooking process.

[0051] However, the operating status can also include display options. This means, for example, that the display screen 16 can show whether the cooking chamber partition 19 is in the cooking chamber 2. Currently, "operating status" can also be understood accordingly as indicating at which point in the baking process or baking program the household cooking appliance 1 is in.

[0052] Figure 4 A schematic perspective view of one embodiment of the cooking compartment partition 19, as mentioned above, is shown. Figure 5 A schematic perspective view of one embodiment of the base unit 23 for the cooking compartment partition 19 is shown. Figure 6 A schematic perspective view of one embodiment of the first accessory unit 24 for the cooking compartment partition 19 is shown. Figure 7A schematic perspective view of one embodiment of the second accessory unit 25 for the cooking compartment partition 19 is shown. Reference is also made to... Figures 4 to 7 .

[0053] The cooking chamber partition 19 includes a base unit 23 and at least one accessory unit from accessory units 24 and 25. At least one accessory unit 24 or 25 is provided. The base unit 23 is guided by guide rails 17 and 18 in the cooking chamber 2. The corresponding accessory unit 24 or 25 is connected to the base unit 23 in a form-locking manner. The form-locking connection is created by the mutual engagement of at least two connecting mating parts—currently one of the accessory units of the base unit 23 and accessory units 24 or 25—or by a rear engagement. The form-locking connection can be disassembled and re-established any number of times.

[0054] The base unit 23 includes connecting elements 26 and 27, particularly guide rails, by means of which the corresponding accessory units 24 and 25 are detachably connected to the base unit 23. A first connecting element 26 and a second connecting element 27 are provided. Specifically, the corresponding accessory units 24 and 25 can be pulled out of the base unit 23 along the extraction direction A. Correspondingly, the corresponding accessory units 24 and 25 can be pushed into the base unit 23 along the insertion direction E. The extraction direction A and the insertion direction E are oriented parallel to the z-direction z.

[0055] The base unit 23 includes a frame-shaped support element 28, which is guided on the guide rails 17 and 18 of the cooking chamber 2. Two connecting elements 26 and 27 are laterally arranged on the support element 28. The connecting elements 26 and 27 are preferably C-shaped or U-shaped in cross-section. The support element 28 carries electrical and / or electronic components 29. These components 29 are placed in the through-hole portion 30 of the frame-shaped support element 28.

[0056] Currently, the component 29 is a heating element bent into a tortuous shape, particularly a tubular heating element. The component 29 includes a plug 31 for energizing the component 29. The plug 31 can be inserted into a corresponding mating plug, which can be disposed on the rear wall 9 of the cooking chamber 2. The identification device 22 is coupled to the component 29, particularly to the plug 31. Therefore, the identification device 22 can identify the component 29, for example, by means of resistance measurement.

[0057] The first accessory unit 24 is preferably a plate-shaped barrier or insulating element. The first accessory unit 24 covers the component 29 upwards toward the first cooking chamber section 20. Therefore, heat from the component 29 is preferably introduced substantially downwards into the second cooking chamber section 21. The first accessory unit 24 may have a central recess 32. Liquid can accumulate in the recess 32. Furthermore, a cooking container or the like can be placed in the recess 32.

[0058] The second accessory unit 25 is preferably a barbecue grill plate. The second accessory unit 25 can also be pushed into the connecting elements 26, 27 of the base unit 23. The second accessory unit 25 is preferably made of coated aluminum alloy. The second accessory unit 25 is also plate-shaped and can have ribs 33 extending along the z-direction. Alternatively, the accessory units 24, 25 can also be provided in the form of a pizza plate or pizza stone.

[0059] Furthermore, at the support element 28 of the base unit 23, not only is it possible (as in...) Figure 5 As shown, connecting elements 26 and 27 are provided on the upper side, and such connecting elements 26 and 27 can also be placed on the lower side of the support element 28. In this case, the component 29 is then placed between two accessory units 24 and 25 that are located on the upper and lower sides of the base unit 23.

[0060] The identification device 22 is configured to identify the construction form or type of the corresponding accessory units 24, 25. For example, if the second accessory unit 25 is identified as a barbecue plate, a barbecue procedure can be executed accordingly. For example, the aforementioned insulating unit, barbecue plate, or pizza stone can be used as different construction forms or types of accessory units 24, 25.

[0061] Therefore, the cooking chamber partition 19 can be identified, for example, by resistance measurement. This is especially possible when the cooking chamber partition 19 has a component 29, for example, in the form of a heating element. As a supplementary or alternative, the cooking chamber partition 19 can be identified by a switch, which is operated by pushing the cooking chamber partition 19 into the cooking chamber 2, particularly by means of a push rod.

[0062] In the case where the cooking compartment partition 19 is constructed in a modular manner and includes a base unit 23 and accessory units 24, 25, the base unit 23 and / or accessory units 24, 25 can be identified as separate modules by operating additional or attached switches as a supplement to existing resistance measurements. Different push rods and / or switches can be set.

[0063] Furthermore, it is also possible to identify the position of the first accessory unit 24, which is constructed as an isolation unit. This should be understood as the identification device 22 being configured to identify whether the first accessory unit 24 is pointing upwards toward the first cooking chamber section 20 or downwards toward the second cooking chamber section 21. By identifying the cooking chamber partition 19 or the base unit 23, the heating mode or display options can be adapted to the functions of the cooking chamber partition 19 or the base unit 23 and the accessory units 24, 25 via the control device 15 of the household cooking appliance 1.

[0064] For example, by identifying the cooking chamber divider 19 that separates the cooking chamber sections 20 and 21, and optionally one of the accessory units 24 and 25, the heating mode of the household cooking appliance 1 and / or the display on the display screen 16 can be adapted to the operation of the two different cooking chamber sections 20 and 21. With the cooking chamber divider 19 removed, the mode can then be changed or switched to normal oven operation.

[0065] In the case where the cooking chamber partition 19 is modular or flip-up, it is possible to switch to another heating mode or display option by recognizing the first accessory unit 24 (which is the isolation unit). For example, if the second accessory unit 25 is a pizza stone or a barbecue plate, the heating mode and the display on the display screen 16 are adjusted for this operating mode.

[0066] If different accessory units 24, 25 are used in the household cooking appliance 1, they can be distinguished from each other by a separate switch (e.g., a switch operated by a separate push rod or a two-stage push rod). Therefore, in the case where accessory units 24, 25 are pizza stones, for example, the maximum power of component 29 can be used, while in grill mode or when using a contact plate as accessory unit 24, 25, reduced power is provided. Furthermore, it can be ensured that operation of the household cooking appliance 1 without the corresponding accessory units 24, 25 can be identified and optionally prevented by evaluation using the identification device 22.

[0067] By identifying the cooking compartment partition 19 and its accessory units 24, 25, the heating mode and / or display and operation options of the household cooking appliance 1 can be adjusted. This prevents possible erroneous operation by the user. Furthermore, since only the possible options in a specific configuration of the cooking compartment partition 19 and its accessory units 24, 25 are displayed, operation becomes easier for the user. By identifying each accessory unit 24, 25, damage to the components of the cooking compartment partition 19 can be prevented, as component 29 can only operate within its set power range. If all accessory units 24, 25 are removed and only the base unit 23 is accommodated in the cooking chamber 2, operation of the cooking compartment partition 19 without accessory units 24, 25 can be prevented by establishing a detection feasibility scheme.

[0068] The cooking chamber partition 19 divides the cooking chamber 2 into two separate cooking chamber sections 20 and 21 that can operate in parallel. The second cooking chamber section 21 can operate, for example, with top heating, bottom heating, grilling heating, grilling and bottom heating, and dense bottom heating, and therefore has advantages over a passive cooking chamber partition. Furthermore, the household cooking appliance 1 can be used as usual with the cooking chamber partition 19 removed. By removing and / or repositioning the base unit 23 and by pushing in the corresponding accessory units 24 and 25, the user is provided with another feasible application scheme to further enhance the flexibility of the household cooking appliance 1.

[0069] Although the invention has been described with reference to embodiments, the invention can be modified in many ways.

[0070] List of reference numerals in the attached diagram:

[0071] 1. Household cooking utensils

[0072] 2. Cooking Room

[0073] 3 doors

[0074] 4. Lower edge

[0075] 5. Upper edge

[0076] 6 handles

[0077] 7. Bottom

[0078] 8 Top

[0079] 9. Rear wall

[0080] 10 sidewalls

[0081] 11 sidewalls

[0082] 12 operation panels

[0083] 13 Operation knobs

[0084] 14 Operation knobs

[0085] 15 Control Devices

[0086] 16-screen display

[0087] 17 guide rails

[0088] 18 guide rails

[0089] 19 Cooking Room Dividers

[0090] 20 cooking room sections

[0091] 21 Cooking Room Section

[0092] 22 Identification Devices

[0093] 23 Basic Units

[0094] 24 Annex Units

[0095] 25 Annex Unit

[0096] 26 connecting elements

[0097] 27 Connecting elements

[0098] 28 support elements

[0099] 29 parts

[0100] 30 Opening Department

[0101] 31 plug

[0102] 32. Depression

[0103] 33. Convex Ribs

[0104] A. Pulling direction

[0105] E. Push direction

[0106] xx direction

[0107] yy direction

[0108] zz direction

Claims

1. Household cooking appliance (1) having a cooking chamber (2) for receiving a cooking object, a cooking chamber partition (19) which can be removed from the cooking chamber (2) for dividing the cooking chamber (2) into different cooking chamber sections (20, 21) and an identification device (22) for identifying a cooking chamber partition (19) received in the cooking chamber (2), wherein the identification device (22) is designed for automatically adapting an operating state of the household cooking appliance (1) to the identified cooking chamber partition (19), wherein the cooking chamber partition (19) has a base unit (23) which is movably guided on a guide rail of the cooking chamber (2), wherein the cooking chamber partition (19) has an accessory unit (24, 25) which is detachably connected to the base unit (23), wherein the base unit (23) has a guide rail by means of which the accessory unit (24, 25) is detachably connected to the base unit (23).

2. The domestic cooking appliance according to claim 1, characterized in that, The identification device (22) is designed for mechanically and / or electronically identifying the cooking chamber partition (19).

3. The domestic cooking appliance according to claim 1 or 2, characterized in that, The operating state of the household cooking appliance (1) comprises a cooking process and / or a display option.

4. The domestic cooking appliance according to claim 1 or 2, characterized in that, The base unit (23) has electrical and / or electronic components (29), wherein the identification device (22) is designed for identifying the electrical and / or electronic components (29).

5. The domestic cooking appliance according to claim 4, characterized in that, The identification device (22) is designed for performing an electrical resistance measurement on the electrical and / or electronic components (29) for identifying the electrical and / or electronic components (29).

6. The domestic cooking appliance according to claim 1 or 2, characterized in that, The accessory unit (24, 25) is an insulation unit, a grill unit and / or a pizza baking unit.

7. The domestic cooking appliance according to claim 6, characterized in that, The identification device (22) is designed for identifying the base unit (23) and / or the accessory unit (24, 25).

8. The domestic cooking appliance according to claim 1 or 2, characterized in that, The identification device (22) is designed for identifying a configuration of the accessory unit (24, 25) and for adapting the operating state of the household cooking appliance (1) to the identified configuration.

9. The domestic cooking appliance according to claim 1, characterized in that, The household cooking appliance (1) is a household oven.

10. The domestic cooking appliance according to claim 4, characterized in that, The electrical and / or electronic components (29) are heating elements.

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