Steam oven

Abstract

This application provides a steam oven, belonging to the field of cooking appliance technology. The steam oven includes: a cabinet with a cooking cavity; a steam generator installed in the cabinet, comprising: a cavity, a first partition, and a heating element; the cavity has a water inlet and an exhaust outlet, the exhaust outlet communicating with the cooking cavity; the first partition is disposed within the cavity, dividing the cavity into a steam generation zone and a steam exhaust zone; the bottom wall of the steam generation zone is at least partially lower than the bottom wall of the steam exhaust zone; the water inlet is located in the steam generation zone, and the exhaust outlet is located in the steam exhaust zone; the first partition has a through hole for allowing steam to enter the steam exhaust zone from the steam generation zone; the heating element is disposed in the steam generation zone for heating liquid to generate steam; a clean water box is installed in the cabinet, and the water inlet communicates with the clean water box. The bottom wall of the steam generation zone is lower than the bottom wall of the steam exhaust zone, providing sufficient settling space for the steam; the exhaust steam collides with the first partition to achieve gas-liquid separation, reducing the water content.

Description

Technical Field

[0001] This application belongs to the field of cooking appliance technology, and more specifically, relates to a steam oven. Background Technology

[0002] In the field of food processing and cooking, steam ovens can perform steaming and high-temperature baking. The steam generator is the core component of a steam oven, and its performance directly affects the steaming and baking results and the quality of the food. Traditional steam generators heat water to produce steam through heating elements. However, due to a lack of proper zone division, the high-temperature steam generated in the heating zone mixes chaotically with insufficiently heated cold water or condensate in a cooling state within the generator. This chaotic mixing means that the steam carries a large amount of incompletely vaporized condensate during generation and transport. When this steam carrying a large amount of condensate enters the cooking chamber, the condensate drips continuously onto the food surface during steaming, resulting in a lack of dryness and shine, a soft and mushy texture, and a loss of elasticity and chewiness. This significantly reduces the taste and quality of the food, failing to meet consumers' demands for high-quality steamed food. Utility Model Content

[0003] The purpose of this application is to provide a steam oven to solve the technical problem in the prior art where steam generated by a steam generator carries a large amount of condensate into the steam oven, affecting the taste of food.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a steam oven, comprising:

[0005] The container has a cooking cavity;

[0006] A steam generator is installed in the housing; the steam generator includes a cavity, a first partition, and a heating element. The cavity has a water inlet and an exhaust outlet, and the exhaust outlet communicates with the cooking cavity. The first partition is disposed in the cavity, dividing the cavity into a steam generation zone and a steam exhaust zone. The bottom wall of the steam generation zone is at least partially lower than the bottom wall of the steam exhaust zone. The water inlet is located in the steam generation zone, and the exhaust outlet is located in the steam exhaust zone. The first partition has a through hole for allowing steam to enter the steam exhaust zone from the steam generation zone. The heating element is disposed in the steam generation zone and is used to heat the liquid to generate steam.

[0007] A clean water box is installed in the housing, and the water inlet is connected to the clean water box.

[0008] Optionally, the bottom wall of the steam generating zone has a step, which divides the steam generating zone into a water inlet zone and a heating zone. The water inlet is located in the water inlet zone, and the heating element is arranged in the heating zone. The bottom wall of the water inlet zone is higher than the bottom wall of the heating zone, and at least the bottom wall of the heating zone is lower than the bottom wall of the steam exhaust zone.

[0009] Optionally, the water inlet area and the steam exhaust area are located on the same side of the heating area, and the bottom wall height of the water inlet area is flush with the bottom wall height of the steam exhaust area.

[0010] Optionally, the heating zone and the water inlet zone are separated by a second partition, and the second partition has a water passage gap with the bottom wall of the steam generation zone.

[0011] Optionally, the through hole is a strip-shaped hole that extends along a direction parallel to the bottom wall of the cavity.

[0012] Optionally, the steam generator further includes a water-vapor separator, which is disposed in the steam exhaust area.

[0013] Optionally, the cavity has a drain outlet located on the bottom wall of the steam generation zone, and the steam oven further includes a wastewater box connected to the drain outlet via a return water pipe.

[0014] Optionally, the clean water box is located outside the cooking cavity, and the wastewater box is located inside the cooking cavity.

[0015] Optionally, it also includes a water guide plate, through which the outlet of the return water pipe is connected to the wastewater box.

[0016] Optionally, a control valve is installed on the return water pipeline, and the wastewater box is lower than the steam generator.

[0017] The beneficial effects of the steam oven provided in this application are as follows: Compared with the prior art, the heating element in this application heats the liquid in the steam generation zone to generate high-temperature steam. The bottom wall of the steam generation zone is lower than the bottom wall of the steam exhaust zone, so that the steam has sufficient settling space in the steam generation zone. The first partition divides the cavity into the steam generation zone and the steam exhaust zone, avoiding disordered movement of steam. Moreover, the steam collides with the first partition during the exhaust process, realizing gas-liquid separation, thereby reducing the water content of the steam discharged from the exhaust port, and thus improving the taste of food. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A partial structural diagram of the steam oven provided in the embodiments of this application. Figure 1 ;

[0020] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the steam oven from another perspective;

[0021] Figure 3 A partial structural diagram of the steam oven provided in the embodiments of this application. Figure 2 ;

[0022] Figure 4 This is a partially enlarged structural diagram of the steam oven provided in the embodiments of this application;

[0023] Figure 5 A partial structural diagram of the steam oven provided in the embodiments of this application. Figure 3 ;

[0024] Figure 6 This is a three-dimensional structural diagram of the steam generator used in the embodiments of this application;

[0025] Figure 7 for Figure 6 The diagram shown is a schematic diagram of the exploded structure of the steam generator;

[0026] Figure 8 This is a three-dimensional structural diagram of the cover used in the embodiments of this application;

[0027] Figure 9 A schematic diagram illustrating the fit between the cover and the water vapor separator provided in an embodiment of this application;

[0028] Figure 10 This is a three-dimensional structural diagram of the disk body used in the embodiments of this application.

[0029] The following are the labeling elements in the figure:

[0030] 100. Steam generator;

[0031] 10. Cavity; 11. Water inlet; 12. Exhaust outlet; 13. Steam generation zone; 131. Water inlet zone; 132. Heating zone; 14. Steam exhaust zone; 15. Drain outlet; 21. First partition; 211. Through hole; 22. Step; 23. Second partition; 30. Water-vapor separator; 41. Cover; 42. Disc; 43. Support leg;

[0032] 110. Box body; 111. Cooking cavity;

[0033] 120. Clean water box; 130. Waste water box; 140. Return water pipe; 150. Water guide plate; 160. Control valve; 170. Inlet water pipe; 171. Inlet water pump; 180. Fan; 190. Control board. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "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 application and simplifying the description, 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 limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] This application provides a steam oven, see the attached embodiment. Figure 1 It includes a steam generator 100, a housing 110, and a clean water box 120. The steam generator 100 includes a cavity 10, a first partition 21, and a heating element. See also Figure 6 and Figure 7 The cavity 10 has a water inlet 11 and an exhaust outlet 12. (See attached image) Figure 8 A first partition 21 is disposed within the cavity 10, dividing the cavity 10 into a steam generation zone 13 and a steam exhaust zone 14. When the steam generator 100 is installed in the steam oven and in use, the bottom wall 13a of the steam generation zone 13 is at least partially lower than the bottom wall 14a of the steam exhaust zone 14. A water inlet 11 is located in the steam generation zone 13, and an exhaust port 12 is located in the steam exhaust zone 14. A through hole 211 is provided on the first partition 21 for allowing steam to enter the steam exhaust zone 14 from the steam generation zone 13. A heating element is disposed in the steam generation zone 13 for heating liquid to generate steam. The housing 110 has a cooking cavity 111, and the exhaust port 12 communicates with the cooking cavity 111. A clean water tank 120 is installed in the housing 110, and the water inlet 11 is connected to the clean water tank 120 via a water inlet pipe 170.

[0039] The clean water tank 120 contains clean liquid, and a water inlet pump 171 is installed on the water inlet pipe 170. The liquid in the clean water tank 120 is pumped into the cavity 10 of the steam generator 100 by the water inlet pump 171, and heated by the heating element to form high-temperature steam. The high-temperature steam enters the cooking cavity 111 through the exhaust port 12 to cook the food.

[0040] See Figure 1 and Figure 2 The water tank 120 is located on one side of the top wall of the housing 110 for easy water addition. The steam generator 100 is located on the top wall of the housing 110, opposite the water tank 120. High-temperature steam generated by the steam generator 100 enters the cooking chamber 111 from the middle of its rear wall. The steam generator 100's proximity to the rear wall of the housing 110 reduces heat loss and increases heating speed by controlling the steam path length. The steam inlet of the cooking chamber 111 is located in the middle of the rear wall, ensuring a relatively consistent path length for steam diffusion throughout the chamber, thus preventing uneven temperature distribution within the cooking chamber.

[0041] In some alternative embodiments, a heat insulation element is provided between the steam generator 100 and the outer wall of the housing 110, which can prevent equipment damage and safety hazards caused by high temperature conduction.

[0042] The steam exhaust zone 14 and the steam generation zone 13 are two independent spaces separated by a first partition 21. High-temperature steam enters the steam exhaust zone 14 through the through-hole 211 on the first partition 21 and then exits from the exhaust port 12. In some embodiments, the first partition 21 is a vertically arranged flat plate that divides the cavity 10 into two independent spaces, one of which serves as the steam exhaust zone 14 and the other as the steam generation zone 13. In still other embodiments, the first partition 21 is an L-shaped plate that separates an independent space at the corner of the cavity 10 as the steam exhaust zone 14, and the steam generation zone 13 is L-shaped. Alternatively, the first partition 21 can be arc-shaped or other shapes, as long as it can divide the interior of the cavity 10 into two independent spaces.

[0043] The bottom wall 13a of the steam generation zone 13 is at least partially lower than the bottom wall 14a of the steam discharge zone 14. For example, all the bottom walls 13a of the steam generation zone 13 are lower than the bottom wall 14a of the steam discharge zone 14. Alternatively, the steam generation zone 13 is divided into a water inlet zone 131 and a heating zone 132, with only the bottom wall 132a of the heating zone 132 being lower than the bottom wall 14a of the steam discharge zone 14, while the bottom wall 131a of the water inlet zone 131 is flush with the bottom wall 14a of the steam discharge zone. Specifically, the bottom wall of the cavity 10 is of uniform thickness, and the bottom wall heights of the steam generation zone 13 and the steam discharge zone 14 are different by setting the step 22 surface. When the liquid in the steam generation zone 13 boils and generates steam, compared to the steam generation zone 13 and the steam discharge zone 14 with uniform bottom wall heights, the lower height of the steam generation zone 13 allows the steam to have more residence space and time in this area, and the liquid water in the steam settles more easily. Meanwhile, when the liquid in the steam generation zone 13 boils, the liquid surface is prone to splashing. The bottom wall 13a of the steam generation zone 13 is lower than the bottom wall 14a of the steam discharge zone 14, which can prevent the splashed liquid from entering the steam discharge zone 14.

[0044] The first partition 21 has a through hole 211, through which steam generated in the steam generation zone 13 enters the steam exhaust zone 14. In some embodiments, only one through hole 211 is provided, and to ensure smooth steam passage, the through hole 211 is strip-shaped. In other embodiments, there are multiple through holes 211, arranged in a single row or multiple rows and columns. Optionally, the through hole 211 can be a circular hole or an oblong hole. Steam passes through the through hole 211 and its moisture content is reduced by the action of the partition.

[0045] In use, the steam generator 100 is installed on the top wall of the steam oven's housing 110. Liquid entering the steam generation zone 13 through the water inlet 11 is heated by the heating element to form high-temperature steam. The high-temperature steam passes through the through-hole 211 on the first partition 21 into the steam exhaust zone 14 and is discharged into the cooking cavity 111 of the steam oven through the exhaust port 12 for cooking. During the steam exhaust process, liquid first settles in the ample space of the steam generation zone 13, and then, after being filtered by the first partition 21 with the through-hole 211 and discharged from the exhaust port 12, it further settles in the steam exhaust zone 14.

[0046] The steam oven provided in this application embodiment heats the liquid in the steam generation zone 13 to generate high-temperature steam. The bottom wall 13a of the steam generation zone 13 is at least partially lower than the bottom wall 14a of the steam exhaust zone 14, so that the steam has sufficient settling space in the steam generation zone 13. The first partition 21 divides the cavity 10 into the steam generation zone 13 and the steam exhaust zone 14, avoiding disordered steam transmission. During the exhaust process, the steam can collide with the first partition 21 to achieve gas-liquid separation, thereby reducing the water content of the steam discharged from the exhaust port 12 and improving the taste of the food.

[0047] In some alternative embodiments, see Figure 7 The bottom wall of the cavity 10 has a step 22, which divides the steam generation zone 13 into a water inlet zone 131 and a heating zone 132. The water inlet 11 is located in the water inlet zone 131, and the heating element is arranged in the heating zone 132. The bottom wall 131a of the water inlet zone 131 is higher than the bottom wall 132a of the heating zone 132, and at least the bottom wall 132a of the heating zone 132 is lower than the bottom wall 14a of the steam exhaust zone 14. For example, the bottom wall heights of both the heating zone 132 and the water inlet zone 131 are lower than the bottom wall 14a of the steam exhaust zone 14. Alternatively, only the bottom wall height of the heating zone 132 may be lower than the bottom wall of the steam exhaust zone 14, while the bottom wall height of the water inlet zone 131 may be level with or higher than the bottom wall of the steam exhaust zone 14.

[0048] The heating element in the steam generation zone 13 typically operates at a high temperature. If a heating element is installed in the water inlet zone 131, the water temperature will change drastically after the liquid enters from the inlet 11, affecting the stability of the steam production process. Furthermore, long-term operation may lead to deformation or even cracking of the cavity wall of the chamber 10. Therefore, this application separates the heating zone 132 and the water inlet zone 131 by a step 22. The heat generated during the heating process by the heating element is transferred to the water inlet zone 131 along the cavity wall. Thus, the liquid enters the chamber 10, is preheated in the water inlet zone 131, and then flows into the heating zone 132 for further heating, thereby reducing energy consumption.

[0049] See Figure 7Step 22 is sloping, with its two ends smoothly transitioning to the water inlet area 131 and the heating area 132, respectively, reducing stress at step 22. In some optional embodiments, see [reference needed]. Figure 8 The water inlet area 131 and the steam exhaust area 14 are located on the same side of the heating area 132, and the bottom wall 131a of the water inlet area 131 is flush with the bottom wall 14a of the steam exhaust area 14, thus making the water inlet area 131 and the steam exhaust area 14 arranged side by side. Specifically, the step 22 divides the bottom wall of the cavity 10 into two areas, one area corresponding to the heating area 132, and the other area corresponding to the water inlet area 131 and the steam exhaust area 14. In some alternative embodiments, the water inlet area 131 and the steam exhaust area 14 are located on different sides of the heating area 132, so that the water inlet area 131 and the steam exhaust area 14 are arranged separately.

[0050] It should be noted that heating zone 132 is a centralized heating area, which can employ constant temperature heating or stepped temperature increase. For example, the heating temperature is uniform throughout heating zone 132, and the liquid flowing into heating zone 132 from water inlet 131 reaches a preset temperature and generates steam under the heating element. Alternatively, heating zone 132 is divided into multiple sub-regions, and the heating temperature of each sub-region increases in a stepped manner along the direction of liquid flow, thereby improving thermal efficiency and reducing energy consumption.

[0051] The steam oven provided in this embodiment divides the steam generation zone 13 into a water inlet zone 131 and a heating zone 132 by setting a step 22. The heating element is only installed in the heating zone 132, and no heating element is required in the water inlet zone 131, reducing the installation cost of the heating element. After the liquid enters the water inlet zone 131 from the water inlet 11, it is preheated by the heat transferred to the water inlet zone 131 by the heating element, reducing energy consumption. In addition, the water inlet zone 131 and the heating zone 132 form a hot and cold zone, which can avoid pressure fluctuations caused by the mixing of hot and cold liquids, extend the service life of the equipment, and prevent cold water from directly entering the heating zone 132, which would cause a sudden drop in temperature, improve the stability of the steam generation process, and reduce the water content in the steam.

[0052] In some alternative embodiments, see Figure 8 The heating zone 132 and the water inlet zone 131 are separated by a second partition 23. The second partition 23 has a water passage gap with the bottom wall of the steam generation zone 13.

[0053] Liquid discharged from inlet 11 into water inlet zone 131 enters heating zone 132 through water passage gap. The second baffle 23 physically separates heating zone 132 and water inlet zone 131, preventing high-temperature steam generated in heating zone 132 from entering water inlet zone 131 and wasting heat. This prevents the disordered transfer of heat from heating zone 132 to water inlet zone 131, creating a relatively independent temperature field. This makes the steam generated in heating zone 132 more concentrated and stable, reducing steam moisture content and ensuring steam dryness.

[0054] Understandably, the first partition 21 and the second partition 23 can be installed as a single unit or separately. (See reference...) Figure 8 The first partition 21 and the second partition 23 are connected in a T-shape, dividing the cavity 10 into a steam exhaust zone 14, a heating zone 132, and a water inlet zone 131. Alternatively, the first partition 21 and the second partition 23 can be set separately, as long as the cavity 10 can be divided into three areas. This application does not make specific limitations in this regard.

[0055] In some alternative embodiments, see Figure 8 The through-hole 211 is a strip-shaped hole that extends along a direction parallel to the bottom wall of the cavity 10. This ensures that all points of the through-hole 211 have the same height difference from the liquid surface in the steam generation zone 13. After the steam evaporates on the boiling liquid surface and rises to the same height, it enters the steam discharge zone 14, thus avoiding significant differences in the water content of the steam entering from different positions of the through-hole 211.

[0056] See Figure 7 and Figure 8 The steam generator 100 includes a disc body 42 and a cover body 41, which are sealed together to form a cavity 10. A first partition 21 is integrally formed with the cover body 41, a heating element is installed on the disc body 42, and a second partition 23 is integrally formed with the cover body 41.

[0057] In some embodiments, a gap exists between the first partition 21 and the pan body 42, allowing condensate settling in the steam exhaust zone 14 to flow back to the heating zone 132 through the gap. Thus, the condensate collected in the steam exhaust zone 14 returns to the heating zone 132 for heating and is discharged from the drain outlet 15 after cooking. In some embodiments, the first partition 21 is fitted and sealed to the pan body 42, allowing steam in the heating zone 132 to enter the steam exhaust zone 14 only through the through hole 211.

[0058] See Figure 8 The first partition 21 and the second partition 23 are connected in a T-shape, and the step 22 extends from one side of the disc 42 to the other along the width direction of the disc 42. After the cover 41 is sealed to the disc 42, a cavity 10 is formed. The step 22 divides the cavity 10 into a heating zone 132 with heating elements and a cold zone without heating elements. The horizontal plate formed by the connection of the first partition 21 and the second partition 23 physically separates the cold zone and the heating zone 132. The vertical plate formed by the connection of the first partition 21 and the second partition 23 divides the cold zone into a water inlet zone 131 and a steam exhaust zone 14. Of course, the first partition 21 and the second partition 23 can also be set separately, as long as the cavity 10 can be divided into three sections.

[0059] like Figure 7As shown, the exhaust port 12 and the water inlet 11 are arranged on the cover 41, and the drain port 15 is located on the plate 42 and in the heating zone 132. After heating in the heating zone 132, the wastewater remaining is discharged from the drain port 15.

[0060] The cover 41 has legs 43 on both opposite sides, which are used to connect to the outer wall of the oven body 110. Specifically, the legs 43 are L-shaped, with their vertical plates maintaining a certain distance between the steam generator 100 and the outer wall of the oven body 110, and their horizontal plates fitting snugly against the outer wall of the oven body 110. There are multiple legs 43, which are distributed on opposite sides of the cover 41. (See reference...) Figure 8 There are four legs 43, and two legs 43 are respectively provided on the opposite side of the cover 41.

[0061] See Figure 9 The steam generator 100 also includes a water-steam separator 30, which is located in the steam exhaust area 14.

[0062] Understandably, the water-vapor separator 30 is located on the flow path of steam from the through hole 211 to the exhaust hole, so that after the steam enters the steam exhaust zone 14 from the through hole 211, it must pass through the water-vapor separator 30 before it can be discharged from the exhaust hole.

[0063] Optionally, the water vapor separator 30 is mesh-shaped and set parallel to the disc 42. The mesh size can be adjusted according to the liquid. Alternatively, the water vapor separator 30 can be a baffle type or a corrugated plate type. By means of the collision between steam and the water vapor separator 30, the liquid adheres to the water vapor separator 30, thereby achieving water vapor separation.

[0064] See Figure 7 The cavity 10 has a drain outlet 15, which is located on the bottom wall of the steam generation zone 13. The steam oven also includes a wastewater box 130, which is connected to the drain outlet 15 via a return water pipe 140.

[0065] Wastewater box 130 is used to collect residual water in steam generator 100 after cooking or water discharged during descaling.

[0066] See Figure 7 and Figure 10 The drain outlet 15 is located on the tray 42 and on the bottom wall of the heating zone 132. To facilitate wastewater drainage, the bottom of the cavity 10 is sloped, with the drain outlet 15 located at the lowest point of the cavity 10. For example, the drain outlet 15 is positioned away from the water inlet 11, and the bottom wall of the heating zone 132 gradually slopes downwards along the water inlet direction. The slope angle does not exceed 10° to avoid requiring a larger installation size due to excessive slope, which would hinder the miniaturization of the entire steam oven. For example, the bottom wall of the heating zone 132 is sloped at 4° relative to the horizontal plane.

[0067] With the bottom wall of the heating zone 132 inclined, the bottom walls of the steam generation zone 13 and the water inlet zone 131 are higher than the highest point of the heating zone 132 to ensure that there is a height difference between the two zones and the heating zone 132.

[0068] The steam oven provided in this embodiment has two boxes: a clean water box 120 and a wastewater box 130, to prevent wastewater from returning to the clean water box 120 and causing secondary pollution. By using the steam generator 100 as described above, the water content of the steam entering the cooking cavity 111 is reduced, preventing excessive condensation from remaining on the surface of the food after cooking, which would affect its appearance and taste.

[0069] In some alternative embodiments, see Figure 2 and Figure 3 The clean water box 120 is located outside the cooking cavity 111, and the wastewater box 130 is located inside the cooking cavity 111.

[0070] Optionally, the wastewater box 130 is drawer-shaped and can be pulled out and installed on the top wall of the cooking cavity 111. See also Figure 3 and Figure 4 Wastewater box 130 is installed on the left side of cooking cavity 111. It is long and extends outward from the inside of cooking cavity 111.

[0071] The wastewater box 130 is installed inside the cooking chamber 111. The high-temperature steam inside the cooking chamber 111 sterilizes the wastewater and reduces bacterial growth. At the same time, the wastewater box 130 is hidden inside the cooking chamber 111. After cooking, the cooking chamber 111 can be opened to remove the wastewater box 130 and empty the wastewater, making cleaning convenient.

[0072] In some optional embodiments, one end of the return water pipe 140 is directly connected to the wastewater box 130, and the other end is directly connected to the drain outlet 15. In still other optional embodiments, the steam oven further includes a water guide plate 150, through which the outlet of the return water pipe 140 is connected to the wastewater box 130. See also Figure 5 The water guide plate 150 is U-shaped, and the outlet of the return water pipe 140 is connected to one end of the water guide plate 150. The other end of the water guide plate 150 is connected to the wastewater box 130 from one side. The water guide plate 150 is inclined, with its higher end connected to the return water pipe 140 and its lower end connected to the wastewater box 130.

[0073] Optional, see below Figure 1 and Figure 5 A control valve 160 is installed on the return water pipe 140, and the wastewater box 130 is lower than the steam generator 100.

[0074] Control valve 160 is used to control the on / off state of return water pipe 140. (See also...) Figure 1 and Figure 2The control valve 160 is located outside the cooking chamber 111, near the drain outlet 15. After cooking or during descaling, the control valve 160 opens. Because the wastewater box 130 is lower than the steam generator 100, wastewater in the heating zone 132 enters the wastewater box 130 through the return water pipe 140 under gravity. Since the channel size of the control valve 160 is wider than the return water pump, scale from the heating zone 132 can relatively easily enter the wastewater box 130 after entering the return water pipe 140 without causing blockage.

[0075] During the use of the steam oven, high-temperature steam in the cooking cavity 111 is transferred to the cabinet 110 through heat conduction and radiation. If heat accumulates, it can cause electronic components to overheat and malfunction, or even pose a safety hazard. Therefore, please refer to... Figure 1 and Figure 2 The steam oven also includes a fan 180, which is located between the water tank 120 and the steam generator 100. The control panel 190 is located on the top wall of the housing 110. The fan 180 is used to dissipate heat from the steam generator 100 and the control panel 190 to prevent heat damage and extend their service life.

[0076] Optionally, the fan 180 is a centrifugal fan 180. By setting the fan 180, the external temperature of the cooking cavity 111 is stabilized, internal heat loss is reduced, and the uniformity of the internal temperature is indirectly maintained. In steam-bake mode, if the external temperature of the cooking cavity 111 is too low, internal steam may condense on the cavity wall. The fan 180 dissipates the heat, preventing localized overheating, ensuring a relatively uniform external temperature, and reducing condensation.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steam oven, characterized in that: include: The housing (110) has a cooking cavity (111); A steam generator (100) is installed in the housing (110). The steam generator (100) includes a cavity (10), a first partition (21), and a heating element. The cavity (10) has a water inlet (11) and an exhaust port (12), and the exhaust port (12) communicates with the cooking cavity (111). The first partition (21) is disposed in the cavity (10) and divides the cavity (10) into a steam generation area (13) and a steam exhaust area (14). The bottom wall of zone (13) is at least partially lower than the bottom wall of the steam exhaust zone (14). The water inlet (11) is located in the steam generation zone (13), and the exhaust port (12) is located in the steam exhaust zone (14). The first partition (21) is provided with a through hole (211) for allowing steam to enter the steam exhaust zone (14) from the steam generation zone (13). The heating element is disposed in the steam generation zone (13) for heating the liquid to generate steam. A clean water box (120) is installed in the housing (110), and the water inlet (11) is connected to the clean water box (120).

2. The steam oven according to claim 1, characterized in that: The bottom wall of the cavity (10) has a step (22), which divides the steam generation zone (13) into a water inlet zone (131) and a heating zone (132). The water inlet (11) is located in the water inlet zone (131), and the heating element is arranged in the heating zone (132). The bottom wall of the water inlet zone (131) is higher than the bottom wall of the heating zone (132), and at least the bottom wall of the heating zone (132) is lower than the bottom wall of the steam exhaust zone (14).

3. The steam oven according to claim 2, characterized in that: The water inlet area (131) and the steam exhaust area (14) are located on the same side of the heating area (132), and the bottom wall height of the water inlet area (131) is flush with the bottom wall height of the steam exhaust area (14).

4. The steam oven according to claim 2, wherein: The heating zone (132) and the water inlet zone (131) are separated by a second partition (23), and there is a water passage gap between the second partition (23) and the bottom wall of the steam generation zone (13).

5. The steam oven of claim 1, wherein: The through hole (211) is a strip-shaped hole that extends along a direction parallel to the bottom wall of the cavity (10).

6. The steam oven of claim 1, wherein: The steam generator (100) also includes a water vapor separator (30), which is located in the steam exhaust area (14).

7. The steam oven of claim 1, wherein: The cavity (10) has a drain outlet (15) located on the bottom wall of the steam generation zone (13). The steam oven also includes a wastewater box (130) connected to the drain outlet (15) via a return water pipe (140).

8. The steam oven according to claim 7, characterized in that: The clean water box (120) is located outside the cooking cavity (111), and the wastewater box (130) is located inside the cooking cavity (111).

9. The steam oven as described in claim 7, characterized in that: It also includes a water guide plate (150), and the outlet of the return water pipe (140) is connected to the wastewater box (130) through the water guide plate (150).

10. The steam oven according to claim 9, characterized in that: A control valve (160) is installed on the return water pipe (140), and the wastewater box (130) is lower than the steam generator.

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