A steam oven with automatic cleaning function
The steam oven, which uses a heating pump and a steam generator working in tandem, utilizes high-temperature steam and hot water for cleaning, solving the problem of incomplete cleaning in traditional steam ovens and achieving automated and efficient cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG WANJIA YUEFENG FOOD MASCH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional steam oven cleaning methods are ineffective at completely removing grease stains, especially in small corners, which can lead to long-term accumulation and affect food safety.
The system employs a combination of a heating pump and a steam generator. High-temperature steam melts oil stains, while the heating pump sprays high-temperature cleaning water. Combined with a fan for rapid cooling and a pressure relief valve for control, it achieves automatic cleaning.
It enables quick and thorough cleaning of the inner walls of the steam oven, avoiding oil residue and odor, and improving food safety.
Smart Images

Figure CN224539944U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of catering equipment technology, and specifically relates to a steam oven with an automatic cleaning function. Background Technology
[0002] A steam oven is an appliance that uses steam to heat food for steaming and baking, offering advantages such as convenience and speed. However, during the steaming and baking process, oil stains from the food adhere to the inner walls of the oven, requiring regular cleaning to maintain hygiene.
[0003] Traditional cleaning methods rely on manual labor, which is not only cumbersome but also difficult to thoroughly clean. Some steam ovens now include a cleaning function that sprays hot water to clean the interior (similar to a dishwasher). However, food grease can accumulate in various corners of the oven during steaming and baking, making it difficult to clean thoroughly with just hot water, especially in small, hard-to-reach areas. This results in incomplete cleaning, and over time, residual grease can accumulate inside the oven, producing unpleasant odors during the continuous steaming and baking process, potentially affecting food safety. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, this utility model provides a steam oven with an automatic cleaning function, which can quickly and thoroughly clean the internal cavity of the oven.
[0005] The technical solution of this utility model is as follows: a steam oven with an automatic cleaning function, the steam oven including a box with a hollow cavity, a heating pump and a steam generator are provided outside the box, the water inlet of the heating pump is connected to an external water source, and the water outlet of the heating pump is connected to a cleaning port set at the top of the cavity through a cleaning water pipe; the water inlet of the steam generator is connected to an external pure water tank, and the steam outlet of the steam generator is connected to the steam inlet inside the cavity; a drain pipe is provided at the bottom of the box, and the heating pump and the steam generator work together to clean the cavity of the steam oven.
[0006] Furthermore, the steam inlet of the cavity is also provided with an annular heating pipe, and the steam inlet is connected to the hot air fan at the back of the box.
[0007] Furthermore, the cleaning port at the top of the cavity is equipped with a nozzle for spraying water to automatically clean the cavity.
[0008] Furthermore, a fan is also provided on the back of the housing, and the air outlet of the fan is connected to the inside of the cavity for rapid cooling inside the cavity.
[0009] Furthermore, the top of the housing is also equipped with a pressure relief valve, which automatically opens to relieve pressure when the pressure inside the cavity exceeds a preset value.
[0010] Furthermore, the inner walls on both sides of the cavity are provided with several racks for placing baking trays.
[0011] Furthermore, the front of the box is provided with a door, and the door is provided with a viewing window.
[0012] The steam oven described in this embodiment is equipped with a heating pump and a steam generator, which work together to clean the oven's interior cavity. Specifically, the steam generator heats water to form steam, which is then introduced into the cavity. The high temperature of the steam melts the grease on the inner wall of the cavity. The heating pump then heats the cleaning water, which is sprayed into the cavity through a cleaning nozzle for automatic cleaning of the grease. This embodiment of the steam oven achieves automatic cleaning of the oven cavity's inner wall through the combined action of high-temperature steam and hot water, offering advantages such as convenient cleaning and a high degree of cleanliness. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the steam oven described in this embodiment of the utility model.
[0014] Figure 2 This is a top view of the steam oven described in this embodiment of the utility model.
[0015] Figure 3 This is a side view of the steam oven described in this embodiment of the utility model.
[0016] Figure 4 This is a front structural diagram of the steam oven described in this embodiment of the utility model.
[0017] In the diagram: 10-Steam oven, 11-Cabinet, 12-Heating pump, 13-Cleaning water pipe, 14-Steam generator, 15-Pure water tank, 16-Base, 17-Pressure relief valve, 18-Door, 19-Drain pipe; 20-Cavity, 21-Cleaning port, 22-Steam inlet, 23-Grill rack, 24-Fan, 25-Transparent window, 26-Hot air fan. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Other embodiments obtained by those skilled in the art based on the following embodiments without creative effort are all within the protection scope of the present utility model.
[0019] If the embodiments of this utility model involve descriptions such as "first" and "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a technical feature defined with "first" and "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of various embodiments can be combined with each other, but must be based on the ability of those skilled in the art to implement them.
[0020] like Figures 1 to 4 As shown, this embodiment provides a steam oven with an automatic cleaning function. The steam oven 10 includes a cabinet 11 with a hollow cavity 20, which is placed on a base 16. The cavity 20 inside the cabinet is a food steaming and baking processing space. Multiple baking racks 23 are provided on the inner walls of both sides of the cavity 20 for placing baking trays. The front of the cabinet 11 has a door 18 with a viewing window 25 for observing the food processing inside the cavity.
[0021] Specifically, the exterior of the housing 11 is equipped with a heating pump 12 and a steam generator 14. The inlet of the heating pump 12 is connected to an external water source (such as tap water) (not shown in the figure), and the outlet of the heating pump 12 is connected to a cleaning port 21 located at the top of the cavity 20 via a cleaning water pipe 13. The inlet of the steam generator 14 is connected to an external pure water tank 15, and the steam outlet of the steam generator 14 is connected to a steam inlet 22 inside the cavity 20. High-temperature steam is generated by the steam generator 14 and forced into the cavity through the steam inlet 22 under high pressure. When the temperature inside the cavity exceeds a preset threshold, air is introduced into the cavity using a fan 24 at the back of the housing, which allows for rapid cooling of the cavity. In addition, a drain pipe 19 is provided at the bottom of the housing 11, which is connected to the bottom of the cavity 20 and is used to drain condensate or cleaning water from the cavity.
[0022] In addition, an annular heating tube (not shown in the figure) is provided around the steam inlet 22 of the cavity 20. The steam inlet is connected to the hot air fan 26 at the back of the oven. When the steam oven is working, the air and steam blown into the cavity 20 by the hot air fan 26 are heated by the annular heating tube, which forms a circulating hot air in the cavity 20, and the food is steamed by the hot air effect.
[0023] Specifically, the cleaning process of the steam oven described in this embodiment is as follows: First, the steam generator 14 is started to generate high-temperature steam, which is then introduced into the cavity 20 through the steam inlet 22. When the temperature inside the cavity reaches a preset value (e.g., 80-100℃, which can be set by the user), the heating pump 12 is started to heat the cleaning water to a preset temperature (e.g., 60-80℃, which can be set by the user). Then, the water is introduced into the cleaning port 21 at the top of the cavity through the cleaning pipe 13, and the high-temperature cleaning water is sprayed onto the inner wall of the cavity 20 through the nozzle at the cleaning port, thus achieving automatic cleaning of the cavity. It should be noted that since the transparent window 25 of the oven door is usually made of glass, in order to prevent the glass window from cracking when exposed to water at high temperatures, the temperature inside the cavity needs to be controlled within a reasonable temperature range (e.g., 80℃) during the cleaning process. In this embodiment, the temperature inside the cavity is raised by the introduced steam. When the temperature exceeds the preset threshold, air is introduced into the cavity using the fan 24 at the back of the oven to achieve rapid cooling.
[0024] During the cleaning process described above, the heating pump 12 and the steam generator 14 work together. The high-temperature steam generated by the steam generator 14 can quickly melt the oil stains adhering to the inner wall of the cavity 20, and the high-temperature steam can reach every corner of the cavity (avoiding cleaning dead spots). Then, the high-temperature cleaning water generated by the heating pump 12 washes away the oil stains in the cavity 20. The wastewater after cleaning is discharged through the drain pipe 19 at the bottom of the cavity, thus achieving a thorough cleaning of the steam oven. In addition, during the food steaming, baking and cleaning process, when the air pressure in the cavity 20 is higher than the set value, the pressure relief valve 17 set on the top of the oven can automatically open to release pressure, thereby ensuring the air pressure in the cavity is stable. The steam oven described in this embodiment achieves the function of automatically cleaning the inner wall of the cavity through the synergistic effect of high-temperature steam and hot water cleaning, and has the advantages of convenient cleaning and high degree of cleanliness.
[0025] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A steam oven with an automatic cleaning function, characterized in that: The steam oven includes a hollow cavity, a heating pump and a steam generator installed outside the cavity. The water inlet of the heating pump is connected to an external water source, and the water outlet of the heating pump is connected to a cleaning port located at the top of the cavity via a cleaning water pipe. The water inlet of the steam generator is connected to an external purified water tank, and the steam outlet of the steam generator is connected to a steam inlet inside the cavity. A drain pipe is provided at the bottom of the cavity. The heating pump and the steam generator work together to clean the cavity of the steam oven.
2. The steam oven with automatic cleaning function according to claim 1, characterized in that: The cavity is also equipped with an annular heating pipe at the steam inlet, and the steam inlet is connected to the hot air fan at the back of the box.
3. The steam oven with automatic cleaning function according to claim 1 or 2, characterized in that: The cleaning port at the top of the cavity is equipped with a nozzle.
4. The steam oven with automatic cleaning function according to claim 1 or 2, characterized in that: The back of the housing is also equipped with a fan, and the air outlet of the fan is connected to the inside of the cavity.
5. The steam oven with automatic cleaning function according to claim 1 or 2, characterized in that: The top of the enclosure is also equipped with a pressure relief valve.
6. The steam oven with automatic cleaning function according to claim 5, characterized in that: When the pressure inside the cavity exceeds a preset value, the pressure relief valve automatically opens to release pressure.
7. The steam oven with automatic cleaning function according to claim 1 or 2, characterized in that: Several grill racks are provided on the inner walls of both sides of the cavity.
8. The steam oven with automatic cleaning function according to claim 1 or 2, characterized in that: The box body has a door on the front, and the door has a viewing window.