CN115804532A

CN115804532A - Accumulated water treatment method and steaming and baking device

Info

Publication number: CN115804532A
Application number: CN202111073786.6A
Authority: CN
Inventors: 宿晓峰; 王涛; 韩龙先; 王清春; 葛兆亮; 权秀芳
Original assignee: Qingdao Haier Intelligent Cooking Appliances Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Intelligent Cooking Appliances Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2023-03-17

Abstract

The invention belongs to the technical field of electric appliances, and particularly discloses a method for treating accumulated water and a steaming and baking device. The accumulated water treatment method is started after the food is cooked, and comprises the following steps: after food cooking is finished, heating the inner container, and detecting the oxygen content in the inner container in real time by using an oxygen sensor; acquiring the oxygen change rate of the oxygen content at the current detection moment; and adjusting the heating power and/or the heating duty ratio of the inner container according to the oxygen change rate. The steaming and baking device adopts the accumulated water treatment method to treat the accumulated water remained in the inner container. The accumulated water treatment method and the steaming and baking device provided by the invention can improve the accumulated water treatment efficiency and reduce the energy consumption of accumulated water treatment.

Description

Accumulated water treatment method and steaming and baking device

Technical Field

The invention relates to the technical field of electric appliances, in particular to a method for treating accumulated water and a steaming and baking device.

Background

The steaming and baking device is a common household appliance device which steals, bakes or cooks food in an inner cavity of the steaming and baking device through electric heating, can meet diversified demands on the food, and improves the life quality of users.

In order to make the baked food fresh and tender, many steaming and baking devices have a steam auxiliary function, that is, in the process of baking the food, steam is injected into the inner container of the steaming and baking device to ensure the humidity in the inner container. Therefore, when the baking is finished, water remains in the inner container of the steaming and baking device. In the prior art, the accumulated water in the inner container is usually evaporated by adopting a direct heating mode, and when the temperature in the inner container reaches a set temperature or the humidity in the inner container is less than a set humidity, the accumulated water is judged to be clearly finished and the heating is stopped.

In the accumulated water treatment method provided by the prior art, it is difficult to reasonably set the accumulated water treatment procedure according to the residual situation of the accumulated water, so that when the accumulated water amount is large, the accumulated water treatment speed is slow, and when the accumulated water amount is small, the heating temperature is too high and the heat loss is large, and therefore, an accumulated water treatment method and a steaming and baking device are urgently needed to solve the problems.

Disclosure of Invention

The invention aims to provide a method for treating accumulated water, which aims to improve the accumulated water treatment efficiency and reduce the energy consumption of accumulated water treatment.

The invention also aims to provide the steaming and baking device, so that the accumulated water treatment efficiency is improved, the accumulated water treatment energy consumption is reduced, and the use experience of the steaming and baking device is improved.

In order to realize the purpose, the invention adopts the following technical scheme:

a method of treating standing water, the method comprising the steps of:

after food cooking is finished, heating the inner container, and detecting the oxygen content in the inner container in real time by using an oxygen sensor;

acquiring the oxygen change rate of the oxygen content at the current detection moment;

and adjusting the heating power and/or the heating duty ratio of the inner container according to the oxygen change rate.

As an optional technical scheme of the accumulated water treatment method, the obtaining of the oxygen change rate of the oxygen content at the current detection time specifically means:

drawing an oxygen content-time relation curve from the beginning of heating to the current detection time according to the oxygen content detected at each detection time; calculating and obtaining the oxygen change rate of the oxygen content at the current detection moment according to the oxygen content-time relation curve;

or acquiring a difference value between the oxygen content at the current detection moment and the oxygen content at a previous preset interval moment, and acquiring the oxygen change rate at the current detection moment according to a ratio of the difference value to the preset interval moment.

As an optional technical scheme of the accumulated water treatment method, according to the oxygen change rate, the adjustment of the heating power of the inner container specifically means that:

when the oxygen change rate is smaller than a first preset value, heating by adopting a bottom heating pipe and an evaporation disc;

and when the oxygen change rate is greater than or equal to a first preset value and less than a second preset value, heating by adopting an evaporation disc, wherein the first preset value is less than the second preset value.

As an optional technical scheme of the accumulated water treatment method, adjusting the heating power of the inner container according to the oxygen change rate further comprises:

when the oxygen change rate is greater than or equal to a second preset value and the temperature in the liner is higher than a first temperature value, stopping heating;

and when the oxygen change rate is greater than or equal to a second preset value and the temperature in the inner container is lower than or equal to the first temperature value, heating by adopting an evaporation disc.

As an optional technical scheme of the accumulated water treatment method, the first preset value is smaller than minus 1.5, and the second preset value is larger than or equal to minus 0.2.

As an optional technical solution of the accumulated water treatment method, adjusting the heating duty ratio of the inner container according to the oxygen change rate specifically includes:

when the oxygen change rate is smaller than a third preset value, the evaporation disc is heated according to a first duty ratio;

when the oxygen change rate is greater than or equal to a third preset value and less than a fourth preset value, the evaporation disc is heated according to a second duty ratio;

when the oxygen change rate is greater than or equal to a fourth preset value and less than a second preset value, the evaporation disc is heated according to a third duty ratio;

the first duty cycle > the second duty cycle > the third duty cycle.

As an optional technical scheme of the accumulated water treatment method, the third preset value is-1.2 to-0.8, and the fourth preset value is-0.7 to-0.4; and/or the first duty ratio is 1, the second duty ratio is 0.7-0.9, and the third duty ratio is 0.4-0.6.

when the oxygen change rate is smaller than a third preset value or the temperature in the inner container is smaller than a second preset temperature, the evaporation disc is heated according to a heating mode with the duty ratio of 1;

and when the oxygen change rate is greater than or equal to a third preset value and the temperature in the inner container is less than or equal to a second preset temperature, heating the evaporation disc according to a heating mode with the duty ratio less than 1.

As an optional technical scheme of the accumulated water treatment method, when the oxygen change rate is greater than or equal to a third preset value and less than a fourth preset value, the evaporation disc is heated according to a second duty ratio, and the second duty ratio is 0.7-0.9;

and when the oxygen change rate is greater than or equal to a fourth preset value and less than a second preset value, heating the evaporation disc according to a third duty ratio, wherein the third duty ratio is 0.4-0.6.

As an optional technical scheme of the accumulated water treatment method, after the inner container is heated by the initial heating power for a preset time, and/or when the temperature in the inner container is higher than a third preset temperature, the oxygen sensor starts to detect the oxygen content.

A steaming and baking device comprises a bottom heating pipe, an evaporation tray and an oxygen sensor, wherein the oxygen sensor is used for detecting the oxygen content in an inner container, and accumulated water in the steaming and baking device is treated by adopting the accumulated water treatment method.

The invention has the beneficial effects that:

the accumulated water treatment method provided by the invention can judge the accumulated water amount in the liner by detecting the change of the oxygen content, and generally indicates that the humidity change in the liner is larger, namely more accumulated water is in the liner when the absolute value of the oxygen change rate is larger. The heating power and/or the heating duty ratio of the inner container are adjusted according to the oxygen change rate, so that the heating power and/or the heating duty ratio can be changed according to the accumulated water in the inner container, the accumulated water can be evaporated, the energy consumption is reduced, and the accumulated water treatment efficiency is improved.

According to the steaming and baking device, the accumulated water treatment efficiency can be improved by adopting the accumulated water treatment method, the accumulated water treatment energy consumption is reduced, and the use experience of the steaming and baking device is improved.

Drawings

FIG. 1 is a flow chart of a method for treating standing water according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method for treating accumulated water according to a second embodiment of the present invention;

fig. 3 is a flowchart of a method for treating accumulated water according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used based on the orientations or positional relationships shown in the drawings for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

The embodiment provides a method for treating accumulated water, as shown in fig. 1, which is used for treating accumulated water in an inner container of a steaming and baking device after food baking is finished so as to ensure the dryness of the inner container after the steaming and baking device is used, so as to facilitate the next use of the steaming and baking device.

The steaming and baking device provided by the present embodiment may be, but is not limited to, an oven, a steam box, or other devices capable of steaming and/or baking food. The steaming and baking device comprises a machine body, an inner container, a steam assembly and a heating assembly, wherein the machine body forms the integral appearance of the steaming and baking device, and the inner container is arranged in the machine body and is provided with an inner cavity for cooking food; the steam assembly is used for supplying high-temperature steam into the inner container so as to enable the inner cavity of the inner container to form a high-temperature and high-pressure environment, and thus food in the inner container is heated; the heating component is used for increasing the ambient temperature in the inner container so as to realize the baking of food.

The inner bag includes inner bag lateral wall and inner bag bottom, and the center of inner bag bottom is seted up flutedly, and the recess is used for collecing the comdenstion water. In the use of the steaming and baking device, especially after food cooking is finished, steam in the inner container is condensed with the lower-temperature side wall of the inner container and the bottom of the inner container to form condensed water, and the generated condensed water is gathered in the groove, so that the condensed water is prevented from flowing to the outside of the steaming and baking device.

The heating assembly comprises an evaporation tray arranged in the groove, and accumulated water in the groove can be evaporated by heating the evaporation tray. The heating component also comprises a heating pipe arranged in the inner container, the heating pipe is generally a bottom heating pipe arranged at the bottom of the inner container, and the heating pipe also can comprise a top heating pipe arranged at the top of the inner container and/or a side heating pipe arranged at the side part of the inner container, so that the uniformity of heating food is improved.

It is understood that the structure of the steaming and baking device is an exemplary structure, and the main structure of the steaming and baking device may refer to the prior art, which is not a point of improvement of the present invention, and the present invention is not described in detail.

In this embodiment, the steaming and baking device further includes an oxygen sensor for detecting the oxygen content in the inner container.

The accumulated water treatment method provided by the embodiment specifically comprises the following steps:

s1, after food is cooked, heating an inner cavity of the inner container, and detecting the oxygen content in the inner container in real time;

specifically, the heating assembly is adopted to heat the inner container, and the bottom heating pipe and/or the evaporation tray can be adopted to heat the inner container.

In this embodiment, an oxygen sensor is used to detect the oxygen content in the liner.

S2, acquiring the oxygen change rate of the oxygen content at the current detection moment;

obtaining the oxygen change rate of the oxygen content at the current time specifically means: according to the oxygen content detected at each detection moment, drawing an oxygen content-time relation curve from the beginning of heating to the current detection moment; and calculating to obtain the oxygen change rate of the oxygen content at the current detection moment according to the oxygen content-time relation curve.

In other embodiments, the oxygen change rate at the current detection time may also be acquired in the following manner: and acquiring a difference value between the oxygen content at the current detection moment and the oxygen content at the previous preset interval moment, and acquiring the oxygen change rate at the current detection moment according to the ratio of the difference value to the preset interval moment. That is, if the oxygen content at the current detection time is Q1, the preset interval time is Δ t, and the oxygen content at the previous preset interval time is Q2, the oxygen change rate is (Q1-Q2)/Δ t.

Because the process of heating and evaporating accumulated water is the process of reducing the oxygen content, Q1 is less than Q2, namely, the effective oxygen change rate is a negative value at any detection time.

And S3, adjusting the heating power and/or the heating duty ratio of the inner container according to the oxygen change rate.

That is, the accumulated water processing method according to the present embodiment can determine the accumulated water amount in the liner by detecting the change in the oxygen content, and in general, when the absolute value of the oxygen change rate is large, it indicates that the humidity change in the liner is large, that is, the accumulated water amount in the liner is large. The heating power and/or the heating duty ratio of the inner container are adjusted according to the oxygen change rate, so that the heating power and/or the heating duty ratio can be changed according to the accumulated water in the inner container, the accumulated water can be evaporated, the energy consumption is reduced, and the accumulated water treatment efficiency is improved.

Example two

The embodiment provides a water accumulation processing method and a steaming and baking device, and the water accumulation processing method provided by the embodiment refines the steps S1 and S3 of the water accumulation processing method provided by the embodiment one, and the steps same as those in the embodiment one are not described again.

Specifically, as shown in fig. 2, in step S1, the inner container is preferably heated by using the evaporation pan and the bottom heating pipe at the time of initial heating of the inner container. After the food is cooked, the accumulated water in the inner container is likely to be more, the evaporating disc and the bottom heating pipe can improve the accumulated water treatment rate, the inner container can be rapidly heated, the accumulated water evaporation rate is improved, and meanwhile, the accuracy of oxygen content detection is improved; moreover, because the bottom heating pipe and the evaporation tray are both arranged at the bottom of the inner container, the bottom heating pipe and the evaporation tray can directly act on accumulated water, and the evaporation rate of the accumulated water is further improved.

It will be appreciated that when not only the bottom heating tube but also the top heating tube and/or the side heating tubes are present in the inner container, it is also possible to heat the inner container in such a way that one or more heating tubes cooperate with the evaporation pan.

In this embodiment, the heating mode in the process of treating the accumulated water is adjusted by adjusting the heating power, that is, in step S3, adjusting the heating power of the inner container according to the oxygen change rate specifically includes: when the oxygen change rate is smaller than a first preset value, heating by adopting a bottom heating pipe and an evaporation disc; and when the oxygen change rate is greater than or the first preset value and less than the second preset value, heating by adopting the evaporation disc.

That is, in this embodiment, during the ponding treatment process, the ponding can be heated by adopting the heating power of two different gears.

When the oxygen change rate is smaller than the first preset value, the oxygen content change is fast, so that the accumulated water at the bottom of the liner is more, the accumulated water overflows from the groove to the bottom surface of the liner, and at the moment, the evaporation disc and the bottom heating pipe are adopted for heating, the accumulated water evaporation rate can be increased, and the accumulated water treatment rate is increased. When the oxygen change rate is larger than or equal to the first preset value and smaller than the second preset value, the water accumulation is shown to exist in the groove, but the water accumulation amount is not too much, at the moment, the evaporation disc is independently adopted for heating, the effectiveness of accumulated water treatment can be guaranteed, and meanwhile, the heat loss is reduced.

When the oxygen change rate is larger than or equal to the second preset value, the change of the oxygen content is small, namely, accumulated water in the groove is small, at the moment, the accumulated water can be evaporated through waste heat in the liner, heating is not needed, and heat loss can be effectively reduced.

That is, in this embodiment, if the oxygen change rate is greater than or equal to the second preset value, the heating is stopped, at this time, the second preset value is set to a value close to 0, which indicates that the oxygen content of the liner does not change basically or the change range is small, that is, indicates that the accumulated water is completely treated, even if the accumulated water exists at this time, the accumulated water is evaporated under the action of the residual heat of the evaporation tray, so that the energy consumption is further saved, the evaporation tray is effectively prevented from being burned dry, and the use safety of the steaming and baking device is improved.

In this embodiment, the first predetermined value is less than-1.5, preferably-1.8 to-1.7. The second preset value is greater than-0.2, preferably greater than-0.08. It is understood that the first preset value and the second preset value can be set according to the type of the steaming and baking device.

EXAMPLE III

The embodiment provides a water accumulation processing method and a steaming and baking device, and the water accumulation processing method provided by the embodiment is a further improvement of the step S3 in the water accumulation processing method in the second embodiment.

In this embodiment, a temperature sensor is further disposed in the steaming device, and the temperature sensor is used for detecting the temperature in the inner container.

In step S3 of this embodiment, when the oxygen change rate is greater than or equal to the second preset value and less than 0, it is first determined whether the current temperature is greater than the first temperature value, if so, the heating is stopped, and if not, the evaporation pan is used for heating.

This kind of setting can guarantee better when the inner bag stop heating, ponding in the inner bag can be evaporated under the effect of inner bag waste heat, avoids because initial remaining ponding is less in the inner bag, and the inner bag has not been heated the uniform temperature and is promptly by the problem of stop heating, guarantees the effect that ponding was handled.

In this embodiment, the first preset value is less than-1.5, preferably-1.8 to-1.7; the second preset value is greater than-0.2, preferably greater than-0.08; the first temperature value is greater than 40 ℃. And it can be understood that the second preset value in this embodiment may be slightly smaller than that in the second embodiment.

Example four

The present embodiment provides a water accumulation processing method and a steaming and baking apparatus, and the water accumulation processing method provided in the present embodiment is a further improvement performed on step S3 in the water accumulation processing method provided in the first embodiment, the second embodiment, or the third embodiment, and the same contents as those in the foregoing embodiments are not described again in this embodiment.

As shown in fig. 3, in step S3 of this embodiment, when the oxygen change rate is greater than the first preset value and less than the second preset value, if the oxygen change rate is less than the third preset value, the evaporation pan is heated according to the first duty ratio; if the oxygen change rate is greater than or equal to a third preset value and less than a fourth preset value, heating the evaporation disc according to a second duty ratio; if the oxygen change rate is greater than or equal to a fourth preset value and less than a second preset value, heating the evaporation disc according to a third duty ratio; first duty cycle > second duty cycle > third duty cycle.

This kind of setting can realize the intermittent type formula heating of evaporating pan through the form of adjusting duty cycle to make in the stage of pause heating, can utilize the waste heat that previous heating produced to evaporate ponding, can save the energy consumption more from this.

In the present embodiment, the first duty ratio is 1, and the second duty ratio is 0.7 to 0.9, preferably 0.8; the third duty cycle is 0.4 to 0.6, preferably 0.5.

Preferably, the first preset value is less than-1.5, preferably-1.8 to-1.7; the second preset value is greater than-0.2, preferably greater than-0.08; the third preset value is preferably-1.2 to-0.8, and optimally-1.05 to-0.95; the fourth preset value is preferably-0.7 to-0.4, and most preferably-0.6 to-0.5.

Further, when the heating duty ratio of the evaporation pan is less than 1, the single heating time of the evaporation pan is 5 s-20 s.

It can be understood that the adjustment of the duty ratio in this embodiment may be combined with the adjustment of the heating power in the second embodiment or the third embodiment, or may be used alone, that is, during the water accumulation treatment, the heating duty ratio may be adjusted only according to the oxygen change rate, at this time, in both the initial heating process and the subsequent adjustment process, only the evaporation pan is heated, and the bottom heating tube does not need to be heated, and when the oxygen change rate is smaller than the third preset value, the evaporation pan is heated by the heating mode with the duty ratio of 1.

EXAMPLE five

The embodiment provides a water accumulation treatment method and a steaming and baking device, and the water accumulation treatment method provided by the embodiment is a further improvement of the water accumulation treatment method provided by the fourth embodiment.

In this embodiment, a temperature sensor is further disposed in the steaming and baking device, and the temperature sensor is used for detecting the temperature in the inner container.

In step S3 of this embodiment, when the oxygen change rate is smaller than a third preset value or the temperature in the inner container is smaller than a second preset temperature, the evaporation pan is heated according to a heating mode with a duty ratio of 1; and when the oxygen change rate is greater than or equal to a third preset value and the temperature in the inner container is less than or equal to a second preset temperature, heating the evaporation disc according to a heating mode with the duty ratio less than 1.

This kind of setting can avoid when the temperature is lower in the inner bag, adopts the problem that the inner bag temperature that intermittent type formula heating leads to is difficult to effectively rise, improves ponding evaporation efficiency. In this embodiment, the second predetermined temperature is preferably 60 ℃ to 80 ℃.

Further, when the temperature in the inner container is higher than a second preset temperature and the oxygen change rate is higher than or equal to a third preset value and lower than a fourth preset value, the evaporation disc is heated according to a second duty ratio, wherein the second duty ratio is 0.7-0.9; and when the oxygen change rate is greater than or equal to a fourth preset value and less than a second preset value, heating the evaporation disc according to a third duty ratio, wherein the third duty ratio is 0.4-0.6.

EXAMPLE six

The embodiment provides a water accumulation treatment method and a steaming and baking device, and the water accumulation treatment method provided by the embodiment is a further improvement of the water accumulation treatment method provided by the embodiment.

In this embodiment, the oxygen sensor starts to detect the oxygen content in the inner container only after the inner container is heated for a preset time by the initial heating power. This kind of setting is favorable to avoiding because the temperature rise in the inner bag is not enough in the initial stage of ponding processing, and the ponding is not the less improper problem of regulation that causes of oxygen change rate that leads to of evaporation yet, guarantees the regulation accuracy to ponding processing procedure.

Preferably, the preset time is 20s to 60s, but it is understood that the preset time can be reasonably set according to the initial heating power, and when the initial heating power is larger, the preset time can be shorter; when the initial heating power is small, the preset time may be increased accordingly.

Further, when the temperature sensor detects that the temperature in the inner container is higher than a third preset temperature, the oxygen sensor starts to detect the oxygen content in the inner container. The temperature is detected by the temperature sensor, so that the inner container can be more favorably ensured to have enough temperature rise, and the accumulated water is in the heating and evaporating stage. Preferably, the third preset temperature is 60 ℃ to 80 ℃.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.

Claims

1. A method for treating standing water, comprising the steps of:

after the food is cooked, heating the inner container, and detecting the oxygen content in the inner container in real time by an oxygen sensor;

acquiring the oxygen change rate of the oxygen content at the current detection time;

2. The accumulated water treatment method according to claim 1, wherein obtaining the oxygen change rate of the oxygen content at the current detection time specifically means:

3. The accumulated water treatment method according to claim 1, wherein adjusting the heating power of the inner container according to the oxygen change rate specifically means:

4. The accumulated water treatment method according to claim 3, wherein adjusting the heating power of the inner container according to the oxygen change rate further comprises:

and when the oxygen change rate is greater than or equal to a second preset value and less than 0 and the temperature in the inner container is lower than or equal to the first temperature value, heating by adopting an evaporation disc.

5. The accumulated water treatment method according to any one of claims 1 to 4, wherein adjusting the heating duty cycle of the inner container according to the oxygen change rate specifically comprises:

the first duty cycle > the second duty cycle > the third duty cycle.

6. The accumulated water treatment method according to claim 5, characterized in that said third preset value is comprised between-1.2 and-0.8 and said fourth preset value is comprised between-0.7 and-0.4; and/or the first duty ratio is 1, the second duty ratio is 0.7-0.9, and the third duty ratio is 0.4-0.6.

7. The accumulated water treatment method according to any one of claims 1 to 4, wherein adjusting the heating duty cycle of the inner container according to the oxygen change rate specifically comprises:

8. The accumulated water treatment method according to claim 7, wherein when the temperature in the inner container is higher than a second preset temperature, if the oxygen change rate is higher than or equal to a third preset value and lower than a fourth preset value, the evaporation pan is heated according to a second duty ratio, wherein the second duty ratio is 0.7-0.9; and if the oxygen change rate is greater than or equal to a fourth preset value and less than a second preset value, heating the evaporation disc according to a third duty ratio, wherein the third duty ratio is 0.4-0.6.

9. The accumulated water treatment method according to any one of claims 1 to 4, wherein the oxygen sensor starts to detect the oxygen content after the inner container is heated for a preset time with an initial heating power and/or when the temperature in the inner container is higher than a third preset temperature.

10. A steaming and baking device comprises a bottom heating pipe and an evaporation tray, and is characterized by further comprising an oxygen sensor, wherein the oxygen sensor is used for detecting the oxygen content in an inner container, and accumulated water in the steaming and baking device is treated by the accumulated water treatment method according to any one of claims 1 to 9.