CN-121970989-A - Humidity control method of steaming oven and steaming oven

CN121970989ACN 121970989 ACN121970989 ACN 121970989ACN-121970989-A

Abstract

The application belongs to the technical field of intelligent household appliances, and particularly relates to a humidity control method of a steaming oven and the steaming oven, wherein the target humidity of a cavity of the steaming oven is determined according to the target temperature of the cavity of the steaming oven corresponding to a current started function, a first humidifying duration is determined according to the target humidity, a steam generator of the steaming oven is controlled to heat so as to humidify the cavity, timing is started until the timing duration reaches the first humidifying duration under the condition that the temperature of the steam generator reaches the first temperature, after the timing duration reaches the first humidifying duration, the humidity of the cavity is controlled by adopting a proportional-integral-derivative control method according to the difference value between the current humidity of the cavity and the target humidity, and if the current humidity is larger than the target humidity and the difference value between the current humidity and the target humidity is larger than a first preset threshold value, an air inlet valve of the steaming oven is controlled to be opened so that dry and cold air enters the cavity. The method effectively improves the precision of humidity control.

Inventors

YANG LIN
FANG LICHENG
QI HONGTAO
SUN DONGGUANG
LIU CHIJUN
NIU YIHAO
HAN LONGXIAN
YANG ZHENNING

Assignees

青岛海尔智慧厨房电器有限公司

Dates

Publication Date: 20260505
Application Date: 20260409

Claims (10)

1. A humidity control method of a steaming oven, comprising: determining the target humidity of the cavity according to the target temperature of the cavity of the steaming and baking box corresponding to the current starting function; determining a first humidifying duration according to the target humidity, controlling a steam generator of the steaming oven to heat so as to humidify the cavity, and starting timing when the temperature of the steam generator reaches a first temperature until the timing duration reaches the first humidifying duration; And after the timing duration reaches the first humidification duration, controlling the humidity of the cavity by adopting a proportional-integral-derivative control method according to the difference value between the current humidity of the cavity and the target humidity, and controlling an air inlet valve of the steam oven to open so as to enable dry and cold air to enter the cavity if the current humidity is larger than the target humidity and the difference value between the current humidity and the target humidity is larger than a first preset threshold in the process of controlling the humidity of the cavity by adopting the proportional-integral-derivative control method.
2. The method of claim 1, wherein the determining the target humidity of the cavity according to the target temperature of the cavity of the steaming oven corresponding to the currently activated function comprises: Determining whether humidification is started or not according to the current started function; and under the condition that the starting humidification is determined, determining the target humidity of the cavity according to the target temperature of the cavity of the steaming and baking box.
3. The method of claim 2, wherein prior to determining the target humidity for the cavity based on the target temperature for the cavity of the steam oven, the method further comprises: starting a heat radiation fan of the steaming oven and starting preheating; Responding to the preheating completion or a user instruction, and collecting the dew point temperature of the current cavity; and controlling the humidity of the cavity of the steaming and baking oven by adopting a proportional-integral-derivative control method according to the difference value between the current humidity and the target humidity, wherein the method comprises the following steps: and if the dew point temperature of the cavity is smaller than the alarm temperature, controlling the humidity of the cavity of the steaming and baking oven by adopting a proportional-integral-derivative control method according to the difference value between the current humidity and the target humidity.
4. A method according to claim 3, characterized in that the method further comprises: If the dew point temperature of the cavity is greater than or equal to the alarm temperature, determining a humidifying interval duration and a second humidifying duration according to the target humidity, and controlling the steam generator to work for the second humidifying duration according to the humidifying interval duration.
5. The method of claim 2, wherein prior to determining the target humidity for the cavity based on the target temperature for the cavity of the steam oven, the method further comprises: and controlling the water quantity of the water fed into the steam generator to reach a second preset threshold value.
6. The method according to any one of claims 1-5, further comprising: controlling the steam generator to feed water for a first preset time period under the condition that the temperature of the steam generator reaches a first temperature; and controlling the steam generator to feed water for a first preset time period when the working time period of the steam generator reaches a second preset time period in the working process of the steam generator.
7. The method of any one of claims 1-5, wherein the controlling the steam oven's intake valve to open to allow dry, cool air to enter the cavity is preceded by: Controlling the steam generator to stop heating and controlling the exhaust port of the steam oven to be opened; After the controlling the intake valve of the steam oven to open to allow dry and cool air to enter the cavity, the method further comprises: and if the difference value between the current humidity and the target humidity is smaller than or equal to the first preset threshold value, controlling the exhaust port to be closed, and controlling the air inlet valve to be closed.
8. The steaming and baking oven is characterized by comprising a main body, an air inlet valve and a controller; The air inlet valve comprises an electromagnetic valve and an air inlet piston, wherein the air inlet piston is opened to enable dry and cold air to enter the main body under the condition that the electromagnetic valve is electrified; the controller is configured to perform the method of any of claims 1-7.
9. A humidity control apparatus for a steaming oven, comprising: The determining module is used for determining the target humidity of the cavity according to the target temperature of the cavity of the steaming oven corresponding to the current started function; The determining module is further configured to determine a first humidification duration according to the target humidity, control a steam generator of the steaming oven to heat to humidify the cavity, and start timing when the temperature of the steam generator reaches a first temperature until the timing duration reaches the first humidification duration; And the control module is used for controlling the humidity of the cavity by adopting a proportional-integral-derivative control method according to the difference value between the current humidity of the cavity and the target humidity after the timing duration reaches the first humidification duration, and controlling the air inlet valve of the steam oven to be opened to enable cold air to enter the cavity if the current humidity is larger than the target humidity and the difference value between the current humidity and the target humidity is larger than a first preset threshold in the process of controlling the humidity of the cavity by adopting the proportional-integral-derivative control method.
10. A humidity control apparatus of a steaming oven, comprising: A memory; A processor; Wherein the memory stores computer-executable instructions; The processor executes computer-executable instructions stored in the memory to implement the method of controlling humidity in a steam oven as claimed in any one of claims 1to 7.

Description

Humidity control method of steaming oven and steaming oven Technical Field The application belongs to the technical field of intelligent household appliances, and particularly relates to a humidity control method of a steaming oven and the steaming oven. Background The steaming and baking oven integrates various cooking functions such as steaming, baking and steam baking, can meet various cooking requirements such as Chinese steaming, western baking, air frying, high-temperature sterilization and the like, is suitable for various scenes such as families and businesses, and is increasingly widely applied to the field of kitchen appliances. Currently, in a humidity control method of an oven, a target temperature is generally determined according to a working mode selected by a user, or a target temperature manually set by the user is used to determine a corresponding target humidity. Then, detecting the actual humidity value of the cavity of the steaming and baking box through a humidity sensor, and controlling the steam generator to heat when the detected actual humidity is lower than the target humidity, so that steam enters the cavity to improve the humidity of the cavity; when the actual humidity is higher than the target humidity, the dry and cold air is controlled to enter or start the air exhaust device so as to reduce the humidity of the cavity of the steaming oven. However, the humidity control method of the steaming and baking oven only controls the humidity of the cavity of the steaming and baking oven according to the target humidity, so that larger humidity control errors are easily generated, and the control precision is lower. Disclosure of Invention The application provides a humidity control method of a steaming oven and the steaming oven, which are used for solving the problems of large humidity control error and low control precision caused by controlling the humidity of a cavity of the steaming oven only according to target humidity in the prior art. In a first aspect, an embodiment of the present application provides a humidity control method of an oven, including: determining the target humidity of the cavity according to the target temperature of the cavity of the steaming and baking box corresponding to the current starting function; determining a first humidifying duration according to the target humidity, controlling a steam generator of the steaming oven to heat so as to humidify the cavity, and starting timing when the temperature of the steam generator reaches a first temperature until the timing duration reaches the first humidifying duration; And after the timing duration reaches the first humidification duration, controlling the humidity of the cavity by adopting a proportional-integral-derivative control method according to the difference value between the current humidity of the cavity and the target humidity, and controlling an air inlet valve of the steam oven to open so as to enable dry and cold air to enter the cavity if the current humidity is larger than the target humidity and the difference value between the current humidity and the target humidity is larger than a first preset threshold in the process of controlling the humidity of the cavity by adopting the proportional-integral-derivative control method. Optionally, the determining the target humidity of the cavity according to the target temperature of the cavity of the steaming and baking box corresponding to the currently started function includes: Determining whether humidification is started or not according to the current started function; and under the condition that the starting humidification is determined, determining the target humidity of the cavity according to the target temperature of the cavity of the steaming and baking box. Optionally, before the determining the target humidity of the cavity according to the target temperature of the cavity of the steaming and baking box, the method further includes: starting a heat radiation fan of the steaming oven and starting preheating; Responding to the preheating completion or a user instruction, and collecting the dew point temperature of the current cavity; and controlling the humidity of the cavity of the steaming and baking oven by adopting a proportional-integral-derivative control method according to the difference value between the current humidity and the target humidity, wherein the method comprises the following steps: and if the dew point temperature of the cavity is smaller than the alarm temperature, controlling the humidity of the cavity of the steaming and baking oven by adopting a proportional-integral-derivative control method according to the difference value between the current humidity and the target humidity. Optionally, the method further comprises: If the dew point temperature of the cavity is greater than or equal to the alarm temperature, determining a humidifying interval duration and a second humidifying duration according to the