Descaling device of steam generator and steam oven
By setting up electrode holders and electrodes in the steam generator, the electrolysis of water generates micro-nano bubbles to clean the steam generator, solving the problem of scale buildup in traditional steam ovens and achieving efficient cleaning and stable performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG MACRO GAS APPLIANCE
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional steam ovens are prone to scale buildup in their steam generators during long-term use. Existing passive cleaning mechanisms are not timely or thorough, leading to performance degradation and shortened lifespan.
The descaling device, which employs an electrode holder and electrode design, generates a mixture of micro-nano bubbles through water electrolysis. It utilizes the strong dissolving power and high-pressure shock waves to clean the inside of the steam generator, preventing the accumulation of stubborn dirt.
It achieves efficient cleaning of steam generators, prevents scale buildup, significantly improves performance stability and extends service life, and avoids the use of chemical cleaning agents.
Smart Images

Figure CN224215312U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steam and oven equipment technology, specifically to a descaling device for a steam generator and a steam oven. Background Technology
[0002] During long-term use, the steam generator of a traditional steam oven is prone to limescale buildup due to the high hardness of the water. Current cleaning solutions generally use weak acids such as citric acid and acetic acid to chemically react with the limescale, softening and dissolving some of it through acid-base neutralization, thereby maintaining the performance of the steam generator and extending its lifespan.
[0003] The above-mentioned cleaning methods have several drawbacks. First, they require the manual and periodic application of acidic cleaning agents, which relies on the user's initiative. If the user forgets or fails to apply the cleaning agent on time, there is a risk of incomplete cleaning. Second, the weak acid solution has limited ability to penetrate and soften stubborn scale, especially dense scale layers that have accumulated over a long period of time, leading to incomplete cleaning. Furthermore, passive cleaning mechanisms cannot effectively prevent the continuous deposition of scale. As the usage cycle extends, the scale that has not been completely removed will gradually form a complex crystalline structure, eventually exceeding the removal threshold of conventional chemical cleaning, causing irreparable damage to the performance and lifespan of the steam generator.
[0004] There is an urgent need to develop a scale treatment solution for steam generators with self-maintenance capabilities. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide a descaling device for a steam generator and a steam oven, so as to solve the problem of untimely and incomplete cleaning of the steam generator of the existing steam oven using the above-mentioned passive cleaning mechanism.
[0006] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:
[0007] The present invention provides a descaling device for a steam generator, comprising an electrode holder, an electrode cover, a first electrode, and a second electrode.
[0008] The electrode cover is provided with a water flow chamber, which has an inlet, an outlet and an installation port between the inlet and the outlet. The inlet is used to connect to a water supply source and the outlet is used to connect to the steam generator.
[0009] The first electrode and the second electrode are respectively fixed to the electrode holder. Both the first electrode and the second electrode are electrically connected to lead wires. The electrode holder is fixed or detachably connected to the electrode cover at the mounting port. The first electrode and the second electrode are located in the water flow chamber. The lead wires extend out of the water flow chamber to connect to the power supply.
[0010] When the lead wire is energized, the first electrode and the second electrode can electrolyze the flowing water.
[0011] Preferably, the first electrode is provided with a plurality of first teeth extending from one end to the other end, and the plurality of first teeth are arranged in a comb-like pattern; the second electrode is provided with a plurality of second teeth extending from one end to the other end, and the plurality of second teeth are arranged in a comb-like pattern.
[0012] The first rack may be located between two adjacent second racks and is spaced apart from the adjacent second racks.
[0013] Preferably, the electrode holder includes a base plate, the first electrode and the second electrode are fixed to a first side of the base plate, and ear plates are spaced apart on the periphery of the base plate. The electrode holder is connected to the electrode cover screw through the ear plates.
[0014] More preferably, the electrode holder further includes a wall plate surrounding the periphery of the seat plate, the ear plate is disposed on the outer periphery of the wall plate, and a sealing ring is provided on the outer side of the wall plate at the connection between the electrode holder and the electrode cover.
[0015] More preferably, the descaling device further includes a sensor, which is fixed to the electrode base or the electrode cover, and the sensor can monitor the water temperature of the water flow chamber;
[0016] And / or, the inner side of the wall panel is provided with a first rib extending axially along the wall panel towards the ear plate.
[0017] Preferably, a first bolt is provided on the first side of the seat plate, and a first connecting post is provided on the second side of the seat plate; one end of the first connecting post is provided with an internal thread and is embedded in the seat plate, and the other end protrudes from the second side of the seat plate and is threadedly connected with a first nut, and the lead wire end is clamped to the first connecting post by the first nut;
[0018] After the first bolt passes through the first electrode or the second electrode, it connects to the first side of the base plate by matching the internal thread.
[0019] More preferably, the second side of the seat plate is provided with a raised second rib, which extends radially along the wall plate and connects to the outer side of the first connecting column.
[0020] Preferably, the electrode holder includes a base plate, and ear plates are spaced apart on the periphery of the base plate. The electrode holder is connected to the electrode cover screw via the ear plates.
[0021] A first bolt is provided on the first side of the base plate, and a first connecting post is provided on the second side of the base plate; one end of the first connecting post is provided with an internal thread and is embedded in the base plate, and the other end protrudes from the second side of the base plate and is threadedly connected with a first nut, and the lead wire end is clamped to the first connecting post by the first nut;
[0022] After the first bolt passes through the first electrode or the second electrode, it connects to the first electrode or the second electrode by matching the internal thread to attach the first electrode or the second electrode to the first side of the base plate, and the first rack and the second rack are arranged alternately.
[0023] More preferably, the first side of the seat plate is provided with a groove corresponding to the first rack and the second rack, and when the first rack is located between two adjacent second racks, the ends of the first rack and the second rack are inserted into the corresponding groove.
[0024] Another objective of this utility model is to provide a steam oven, including a main body and a control panel, a water tank and a steam generator disposed on the main body, and also including a descaling device for the steam generator as described above, wherein the water inlet of the electrode cover in the descaling device is connected to the water tank and the water outlet of the electrode cover is connected to the water inlet of the steam generator.
[0025] The lead wires in the descaling device are electrically connected to the control board.
[0026] Compared with the prior art, the beneficial effects of the descaling device for a steam generator described in this utility model are mainly reflected in:
[0027] This invention involves setting the first electrode and the second electrode in the water flow chamber and electrically connecting the first electrode and the second electrode to the lead wire. After the lead wire is connected to a power source, the flowing water can be electrolyzed to generate oxygen, hydrogen, negatively charged oxygen ions, and hydrogen ions, which are then mixed into a micro-nano bubble mixture. The micro-nano bubble mixture enters the steam generator with the water flow. The micro-nano bubbles have a strong dissolving ability and can efficiently adsorb oil stains, particulate pollutants, or microorganisms. Through the gas-liquid interfacial tension, dirt can be peeled off from the physical surface. At the same time, the micro-nano bubbles can penetrate into crevices, adsorb stubborn oil stains, and loosen and remove them, thereby achieving the purpose of cleaning dirt.
[0028] Furthermore, the high-pressure shock waves generated when the micro-nano bubbles burst have a strong ability to peel off oil stains, which can prevent the accumulation of stubborn dirt. Moreover, they do not contain harmful chemical components, which can significantly improve the cleaning effect, ensure the stable performance of the steam generator, and extend its life. Therefore, it can solve the problem of untimely and incomplete cleaning in the existing steam ovens that use the above-mentioned passive cleaning mechanism. Attached Figure Description
[0029] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.
[0030] Figure 1 A three-dimensional structure of a descaling device for a steam generator provided in an embodiment of this utility model. Figure 1 ;
[0031] Figure 2 for Figure 1 A sectional view;
[0032] Figure 3 The three-dimensional assembly structure of the electrode holder and the first electrode and the second electrode provided in the embodiment of this utility model Figure 1 ;
[0033] Figure 4 The three-dimensional assembly structure of the electrode holder and the first electrode and the second electrode provided in the embodiment of this utility model Figure 2 ;
[0034] Figure 5 for Figure 4 A sectional view;
[0035] Figure 6 A three-dimensional structural diagram of the electrode holder provided in an embodiment of this utility model;
[0036] Figure 7 A three-dimensional structural diagram of the first electrode and the second electrode provided in an embodiment of this utility model;
[0037] Figure 8 A three-dimensional structural diagram of a steam oven provided for an embodiment of this utility model;
[0038] Reference numerals: Main body 100, control panel 200, water tank 300, steam generator 400, descaling device 500, solenoid valve 600;
[0039] Electrode holder 1, base plate 110, wall plate 120, ear plate 130, first rib 140, second rib 150, electrode cover 2, first electrode 3, first rack 310, second electrode 4, second rack 410, water flow chamber 5, water inlet 6, water outlet 7, mounting port 8, lead wire 9, sealing ring 10, sensor 11, first bolt 12, first connecting post 13, internal thread 14, first nut 15, groove 16. Detailed Implementation
[0040] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this utility model.
[0041] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.
[0042] This embodiment provides a descaling device for a steam generator, such as... Figures 1 to 8 As shown, it includes an electrode holder 1, an electrode cover 2, a first electrode 3, and a second electrode 4;
[0043] The electrode cover 2 is provided with a water flow chamber 5. The water flow chamber 5 has a water inlet 6, a water outlet 7, and an installation port 8 disposed between the water inlet 6 and the water outlet 7. The water inlet 6 is used to connect to the water supply source, and the water outlet 7 is used to connect to the steam generator.
[0044] The first electrode 3 and the second electrode 4 are respectively fixed to the electrode base 1. The first electrode 3 and the second electrode 4 are electrically connected to the lead wire 9. The electrode base 1 is fixed or detachably connected to the electrode cover 2 at the mounting port 8. The first electrode 3 and the second electrode 4 are located in the water flow chamber 5. The lead wire 9 extends out of the water flow chamber 5 to connect to the power supply.
[0045] When the lead wire 9 is energized, the first electrode 3 and the second electrode 4 can electrolyze the flowing water.
[0046] This invention sets a first electrode 3 and a second electrode 4 in the water flow chamber 5 and electrically connects the first electrode 3 and the second electrode 4 to the lead wire 9. After the lead wire 9 is connected to the power supply, the flowing water can be electrolyzed to generate oxygen, hydrogen, negatively charged oxygen ions, and hydrogen ions, which are then mixed into a micro-nano bubble mixture. The micro-nano bubble mixture enters the steam generator with the water flow. The micro-nano bubbles have a strong dissolving ability and can efficiently adsorb oil stains, particulate pollutants, or microorganisms. Through the gas-liquid interfacial tension, dirt can be peeled off from the physical surface. At the same time, the micro-nano bubbles can penetrate into the crevices, adsorb stubborn oil stains, and loosen and fall off, thereby achieving the purpose of cleaning dirt.
[0047] Furthermore, the high-pressure shock waves generated when the micro-nano bubbles burst have a strong ability to peel off oil stains, which can prevent the accumulation of stubborn dirt. They do not contain harmful chemical components, which can significantly improve the cleaning effect, ensure the stable performance of the steam generator, and extend its life. Therefore, it can solve the problem of untimely and incomplete cleaning in the existing steam ovens that use the above-mentioned passive cleaning mechanism.
[0048] It should be noted that the electrode base 1 and electrode cover 2 can be fixedly connected by welding or other methods, and can be detached by snaps, threads, and screws. The steam generator has heating capabilities. As its internal temperature rises, the micro-nano bubbles in the water gradually shrink and eventually collapse, instantly generating localized high temperatures, reaching approximately 800°C. The shock wave speed during collapse can reach approximately 500 meters per second, while simultaneously generating a high-pressure shock wave. This energy can destroy the structure of pollutants, such as carbonized food residue, grease, and other organic matter, thus playing an effective cleaning role during the explosion.
[0049] In a preferred embodiment, such as Figure 3 and Figure 7 As shown, the first electrode 3 is provided with a plurality of first racks 310 extending from one end to the other end, and the plurality of first racks 310 are arranged in a comb-like pattern.
[0050] The second electrode 4 is provided with a plurality of second racks 410 extending from one end to the other end, and the plurality of second racks 410 are arranged in a comb-like pattern.
[0051] The first rack 310 may be located between two adjacent second racks 410 and is spaced apart from the adjacent second racks 410. It should be noted that the purpose of the spacing is to avoid the first rack 310 from contacting the second rack 410, and to prevent the first electrode 3 and the second electrode 4 from contacting each other.
[0052] In this embodiment, the structural design of multiple first racks 310 and multiple second racks 410 can increase the electrolysis area, thereby increasing the number of micro-nano bubbles and improving the cleaning effect. In a specific embodiment, the first electrode 3 and the second electrode 4 are both sheet-shaped, which can be manufactured by plate stamping, simplifying the production process and reducing the processing difficulty.
[0053] In another preferred embodiment, such as Figure 4 and Figure 5 As shown, the electrode holder 1 includes a base plate 110, the first electrode 3 and the second electrode 4 are fixed to the first side of the base plate 110, and ear plates 130 are spaced apart around the base plate 110. The electrode holder 1 is connected to the electrode cover 2 by screws through the ear plates 130.
[0054] Further preferably, the electrode holder 1 also includes a wall plate 120 surrounding the seat plate 110, and an ear plate 130 disposed on the outer periphery of the wall plate 120. A sealing ring 10 is provided on the outer side of the wall plate 120 at the connection between the electrode holder 1 and the electrode cover 2. When the water temperature rises, thermal expansion will occur, which will improve the waterproof sealing effect of the sealing ring 10. Specifically, the sealing ring 10 can be an integral rubber ring. It should be noted that the electrode holder 1 is made of non-metallic material.
[0055] In a further preferred embodiment, such as Figure 1 and Figure 2 As shown, the descaling device also includes a sensor 11, which is fixed to the electrode base 1 or the electrode cover 2. The sensor 11 can monitor the water temperature in the water flow chamber 5. In this embodiment, the sensor 11 is fixed to the electrode cover 2, and its probe extends into the water flow chamber 5. The sensor 11 is also connected to the control board 200 of the steam oven, sending the monitored temperature to the control board 200 to control the water temperature in the steam generator, preventing the sealing ring 10 from being damaged due to excessive temperature, and ensuring that the sealing ring 10 does not age with the increase of usage time, thus extending its lifespan. Specifically, a temperature threshold can be set, preferably below 50°C.
[0056] In a further preferred embodiment, such as Figure 4 As shown, a first rib 140 extending axially along the wall panel 120 is provided on the inner side of the wall panel 120 facing the ear plate 130.
[0057] In another preferred embodiment, such as Figure 2 and Figure 5 As shown, a first bolt 12 is provided on the first side of the base plate 110, and a first connecting post 13 is provided on the second side of the base plate 110; one end of the first connecting post 13 is provided with an internal thread 14 and is embedded in the base plate 110, and the other end protrudes from the second side of the base plate 110 and is threadedly connected with a first nut 15, and the end of the lead wire 9 is clamped to the first connecting post 13 by the first nut 15;
[0058] After the first bolt 12 passes through the first electrode 3 or the second electrode 4, it connects with the internal thread 14 to attach the first electrode 3 or the second electrode 4 to the first side of the base plate 110.
[0059] In this embodiment, the lead wire 9 and the electrode can be fixed and detached on both sides of the base plate 110 by the cooperation of the first connecting column 13, the first nut 15 and the first bolt 12. The lead wire 9 is located outside the water flow chamber 5, which not only ensures the reliability of the lead wire 9, but also makes the electrolysis-related components a detachable whole, which is convenient for installation and also facilitates the replacement of parts.
[0060] In a further preferred embodiment, such as Figure 4 As shown, a raised second rib 150 is provided on the second side of the seat plate 110. The second rib 150 extends radially along the wall plate 120 and is connected to the outer side of the first connecting column 13.
[0061] In another preferred embodiment, such as Figures 2 to 5 As shown, the electrode holder 1 includes a base plate 110, and ear plates 130 are spaced apart around the base plate 110. The electrode holder 1 is connected to the electrode cover 2 by screws through the ear plates 130.
[0062] A first bolt 12 is provided on the first side of the base plate 110, and a first connecting post 13 is provided on the second side of the base plate 110. One end of the first connecting post 13 is provided with an internal thread 14 and is embedded in the base plate 110, and the other end protrudes from the second side of the base plate 110 and is threadedly connected with a first nut 15. The end of the lead wire 9 is clamped to the first connecting post 13 by the first nut 15.
[0063] After the first bolt 12 passes through the first electrode 3 or the second electrode 4, it connects with the internal thread 14 to attach the first electrode 3 or the second electrode 4 to the first side of the base plate 110, and the first rack 310 and the second rack 410 are arranged alternately.
[0064] As mentioned above, this embodiment also uses the first connecting post 13, the first nut 15, and the first bolt 12 to connect and fix the lead wire 9 and the electrode to both sides of the base plate 110 respectively, making them detachable. This allows the electrolysis-related components to form a detachable whole, facilitating installation and replacement of parts. In addition, the staggered arrangement of the first rack 310 and the second rack 410 increases the electrolysis area while significantly reducing the volume occupied by the first electrode 3 and the second electrode 4, enabling a compact design for the electrode base 1.
[0065] In a further preferred embodiment, such as Figure 3 , 6As shown in Figure 7, the first side of the base plate 110 is provided with a groove 16 corresponding to the first rack 310 and the second rack 410. When the first rack 310 is located between two adjacent second racks 410, the ends of the first rack 310 and the second rack 410 are inserted into the corresponding groove 16. In this embodiment, the groove 16 can play a guiding and positioning role when installing the electrode, which is convenient for installation. On the other hand, the groove 16 is set in the gap between the first rack 310 and the second rack 410 to play a limiting role, which can prevent the first electrode 3 from contacting the second electrode 4 and ensure the reliability of electrolysis.
[0066] In addition, such as Figure 8 As shown, an embodiment of a steam oven is also provided, including a main body 100 and a control board 200, a water tank 300 and a steam generator 400 disposed on the main body 100. It also includes a descaling device 500 for the steam generator, wherein the water inlet 6 of the electrode cover 2 in the descaling device 500 is connected to the water tank 300, and the water outlet 7 of the electrode cover 2 is connected to the water inlet 6 of the steam generator 400; the lead wire 9 in the descaling device 500 is electrically connected to the control board 200.
[0067] In this embodiment, the steam oven can achieve autonomous cleaning of the steam generator 400 by setting the above-mentioned descaling device, and can achieve excellent cleaning effect through micro-nano bubbles.
[0068] It should be noted that a solenoid valve 600 is usually installed between the water tank 300 and the steam generator 400 to control the flow of water between them. The solenoid valve 600 is connected to the control board 200. In this embodiment, the solenoid valve 600 is installed between the water tank 300 and the descaling device 500, and the flow of water into the descaling device 500 can be controlled by the control board 200.
[0069] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0070] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0071] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A descaling device for a steam generator, characterized in that: Includes electrode holder, electrode cover, first electrode, and second electrode; The electrode cover is provided with a water flow chamber, which has an inlet, an outlet and an installation port between the inlet and the outlet. The inlet is used to connect to a water supply source and the outlet is used to connect to the steam generator. The first electrode and the second electrode are respectively fixed to the electrode holder. Both the first electrode and the second electrode are electrically connected to lead wires. The electrode holder is fixed or detachably connected to the electrode cover at the mounting port. The first electrode and the second electrode are located in the water flow chamber. The lead wires extend out of the water flow chamber to connect to the power supply. When the lead wire is energized, the first electrode and the second electrode can electrolyze the flowing water.
2. The descaling device according to claim 1, characterized in that: The first electrode is provided with a plurality of first teeth extending from one end to the other end, and the plurality of first teeth are arranged in a comb-like pattern; the second electrode is provided with a plurality of second teeth extending from one end to the other end, and the plurality of second teeth are arranged in a comb-like pattern. The first rack may be located between two adjacent second racks and is spaced apart from the adjacent second racks.
3. The descaling device according to claim 1, characterized in that: The electrode holder includes a base plate, the first electrode and the second electrode are fixed to a first side of the base plate, and ear plates are spaced apart on the periphery of the base plate. The electrode holder is connected to the electrode cover screw through the ear plates.
4. The descaling device according to claim 3, characterized in that: The electrode holder also includes a wall panel surrounding the periphery of the base plate, the ear plate is disposed on the outer periphery of the wall panel, and a sealing ring is provided on the outer side of the wall panel at the connection between the electrode holder and the electrode cover.
5. The descaling device according to claim 4, characterized in that: The descaling device also includes a sensor, which is fixed to the electrode base or the electrode cover, and the sensor can monitor the water temperature of the water flow chamber; And / or, the inner side of the wall panel is provided with a first rib extending axially along the wall panel towards the ear plate.
6. The descaling device according to claim 4, characterized in that: A first bolt is provided on the first side of the base plate, and a first connecting post is provided on the second side of the base plate; one end of the first connecting post is provided with an internal thread and is embedded in the base plate, and the other end protrudes from the second side of the base plate and is threadedly connected with a first nut, and the lead wire end is clamped to the first connecting post by the first nut; After the first bolt passes through the first electrode or the second electrode, it connects to the first side of the base plate by matching the internal thread.
7. The descaling device according to claim 6, characterized in that: The second side of the seat plate is provided with a raised second rib, which extends radially along the wall plate and connects to the outer side of the first connecting column.
8. The descaling device according to claim 2, characterized in that: The electrode holder includes a base plate, and ear plates are spaced apart on the periphery of the base plate. The electrode holder is connected to the electrode cover screw via the ear plates. A first bolt is provided on the first side of the base plate, and a first connecting post is provided on the second side of the base plate; one end of the first connecting post is provided with an internal thread and is embedded in the base plate, and the other end protrudes from the second side of the base plate and is threadedly connected with a first nut, and the lead wire end is clamped to the first connecting post by the first nut; After the first bolt passes through the first electrode or the second electrode, it connects to the first electrode or the second electrode by matching the internal thread to attach the first electrode or the second electrode to the first side of the base plate, and the first rack and the second rack are arranged alternately.
9. The descaling device according to claim 8, characterized in that: The first side of the seat plate is provided with a groove corresponding to the first rack and the second rack. When the first rack is located between two adjacent second racks, the ends of the first rack and the second rack are inserted into the corresponding groove.
10. A steam oven, comprising a main body and a control panel, a water tank, and a steam generator disposed on the main body, characterized in that: It also includes a descaling device for a steam generator as described in any one of claims 1 to 9, wherein the inlet of the electrode cover is connected to the water tank, and the outlet of the electrode cover is connected to the inlet of the steam generator; The lead wires in the descaling device are electrically connected to the control board.