CN115736608A

CN115736608A - Steaming and baking oven and control method thereof

Info

Publication number: CN115736608A
Application number: CN202211400961.2A
Authority: CN
Inventors: 刘娟; 张雪飞; 于祥
Original assignee: Hisense Shandong Kitchen and Bathroom Co Ltd
Current assignee: Hisense Shandong Kitchen and Bathroom Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-07

Abstract

The application provides a steaming and baking box and a control method thereof, and particularly relates to the technical field of kitchen appliances. This steaming and baking oven includes: a box body; a water storage tank; the steam generator is communicated with the water storage tank through a water inlet pipeline, and a water inlet pump and a flow meter are arranged on the water inlet pipeline; the water-vapor separator is communicated with the steam generator and the cavity; a controller configured to: starting a cooking program set by a user, wherein the cooking program comprises a target cooking temperature; according to the preset corresponding relation, obtaining a circulating water quantity, a first time length and a second time length corresponding to the target cooking temperature; controlling the steam generator and the water inlet pump to work periodically under the condition that the steam generator has an initial water amount of water; and after the steam generator is paused for the second time, the water inlet pump is controlled to pump the circulating water into the steam generator according to the water inlet quantity of the steam generator detected by the flow meter.

Description

Steaming and baking oven and control method thereof

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a steaming and baking oven and a control method thereof.

Background

At present, with the improvement of living standard of people, the functions of the kitchen household appliances are continuously upgraded. Traditional ovens and microwave ovens can cause water in food to run off, affecting the taste of food, and steam ovens not only can bake but also have the function of tender baking, so that water in food materials can be well preserved.

However, in the existing steaming and baking oven, the water inflow in the steam generator cannot be accurately controlled, and excessive water can wet food and affect the steaming and cooking effect; the water inflow is too little, the generated steam quantity is insufficient, the cooking efficiency is influenced, even the steam generator can be dried, and certain potential safety hazards exist.

Disclosure of Invention

The embodiment of the application provides a steaming and baking box and a control method thereof, which are used for realizing the accurate control of the water inflow of a steam generator.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, there is provided a steam oven comprising:

the food box comprises a box body, a box body and a box body, wherein a cavity for placing food materials is formed inside the box body;

the water storage tank is arranged outside the box body and used for storing water;

the steam generator is communicated with the water storage tank through a water inlet pipeline, a water inlet pump and a flow meter are arranged on the water inlet pipeline, the water inlet pump is used for pumping water in the water storage tank into the steam generator, and the flow meter is used for detecting the water inlet amount of the steam generator; the steam generator is used for heating the water from the water storage tank to boil;

the water-steam separator is communicated with the steam generator through a first steam pipeline and is communicated with the cavity through a second steam pipeline and is used for carrying out gas-liquid separation on water steam from the steam generator, and the separated water steam is conveyed into the cavity through the second steam pipeline;

the controller is electrically connected with the steam generator, the water inlet pump and the flow meter; the controller is configured to:

starting a cooking program set by a user, wherein the cooking program comprises a target cooking temperature; according to the preset corresponding relation, obtaining a circulating water quantity corresponding to the target cooking temperature and a first time length and a second time length corresponding to the circulating water quantity;

controlling the steam generator and the water inlet pump to periodically operate in case of an initial amount of water in the steam generator during the cooking process;

and after the steam generator is temporarily stopped for the second time, the water inlet pump is controlled to pump the circulating water into the steam generator according to the water inlet quantity of the steam generator detected by the flow meter.

Steam generator can turn into vapor with its inside water at the working process, and the liquefaction is exothermic after vapor reaches the cavity for the edible material in the cavity is ripe. Because the amount of the steam generated by the steam generator can influence the ripening speed of the food materials and also influence the taste of the food materials, the cooking effect can be effectively ensured by controlling the generation amount of the steam in the steam generator.

The technical scheme provided by the embodiment of the application at least has the following beneficial effects:

through set up the flowmeter on water inlet pipe, the inflow that detects steam generator that can be accurate to the inflow in every heating cycle of control is the circulation water yield. Under the condition that the steam generator has the initial water quantity, the steam generator can be directly controlled to heat the initial water quantity, and dry burning is avoided. And the steam generator is controlled, and the actions of heating, heating suspension and water inlet are completed in each heating period, so that the steam quantity generated by the steam generator is accurately controlled. The circulating water amount pumped by the steam generator in each heating period corresponds to the target cooking temperature in the cooking program, and the water vapor generated by heating the circulating water amount in each heating period can meet the heating requirement of the target cooking temperature. Meanwhile, the first duration (namely heating duration) of the continuous operation of the steam generator and the second duration (namely heating pause duration) of the pause operation of the steam generator correspond to the circulating water volume, so that the circulating water volume can be completely heated and converted into the steam in the first duration, and the accurate control of the steam in the cavity can be realized, and the cooking effect can be ensured.

In some embodiments, the steam oven further comprises: the drainage pump is arranged on a drainage pipeline, one end of the drainage pipeline is connected with the water storage tank, the other end of the drainage pipeline is communicated with the steam generator and the water-vapor separator, and the drainage pump is used for pumping water in the steam generator and the water-vapor separator into the water storage tank; a controller is electrically connected to the drain pump, the controller of the steaming oven further configured to: and when the time for executing the cooking program reaches the target cooking time, controlling the cooking program to be finished, and controlling the drainage pump to pump the water in the steam generator and the water-steam separator back to the water storage tank.

According to the embodiment, when the cooking procedure is finished, the water pump is controlled to pump residual water in the steam generator and the water-vapor separator back to the water storage tank, and therefore it can be ensured that the water in the steam generator, the water-vapor separator and the water inlet pipeline is in an anhydrous state after the cooking procedure is finished, on one hand, the generation of water scales can be reduced, the blockage of the steam generator, the water-vapor separator and the water inlet pipeline is avoided, on the other hand, the phenomenon that the residual water is deteriorated and influences the effect of next cooking is avoided.

In some embodiments, the steam separator of the steaming oven is further in communication with the water storage tank via a water inlet line, the controller of the steaming oven further configured to: before the steam generator and the water inlet pump are controlled to work periodically, the water inlet pump is controlled to pump initial water quantity into the steam generator and the water separator, wherein the initial water quantity is larger than a first preset water quantity and smaller than or equal to a second preset water quantity; the first preset water amount is the sum of the water amount when the steam generator is in dry burning and the water amount consumed by the steam generator in the first heating in the first time, and the second preset water amount is half of the sum of the volumes of the steam generator and the water-steam separator.

According to the embodiment, the water-steam separator can be communicated with the steam generator through the water inlet pipeline, so that the water pumped in the water-steam separator can keep the water quantity in the steam generator stable, and the stable steam quantity is conveyed into the cavity. Because when starting the culinary art procedure, be in anhydrous state in the steam generator, if heating this moment can take place dry combustion method, have certain potential safety hazard. Therefore, an initial amount of water needs to be stored in the steam generator before the steam generator and the water inlet pump are controlled to operate periodically, so as to prevent a dry-fire situation from occurring. To prevent dry-heating from occurring, the initial amount of water is not less than a first preset amount of water, i.e., the sum of the dry-heated water level and the water consumed by the steam generator during a first time period in the first heating cycle. In order to avoid that the time required for heating the water to boiling is longer because the larger the amount of water, the initial amount of water is less than half the second preset amount, i.e. the sum of the volumes of the steam generator and the water-steam separator. Therefore, the quick generation of water vapor can be ensured, and the cooking efficiency is improved while the cooking safety is ensured.

In some embodiments, the steam oven further comprises a first temperature sensor disposed in the steam generator for detecting a temperature of the steam generator;

a controller is electrically connected to the first temperature sensor, the controller further configured to:

acquiring a temperature value of the steam generator detected by a first temperature sensor;

and when the temperature value is greater than the water supplementing temperature value, controlling the water inlet pump to pump the initial water amount into the steam generator and the water separator, wherein the water supplementing temperature value represents the temperature value of the steam generator during dry burning.

It can be known from the above embodiments that, since the temperature of the steam generator is higher when dry burning occurs than when the steam generator is in normal operation, when the temperature of the first temperature sensor is detected to be higher than the water replenishing temperature value, it indicates that all the water in the steam generator has evaporated, and there is a possibility of dry burning occurring. At this time, the water inlet pump needs to be controlled to pump a certain amount of water into the steam generator. After the water in the steam generator is completely evaporated, the steam generator is in a water-free state as when the steam oven is opened, so that the initial amount of water can be pumped into the steam generator, the occurrence of dry burning can be prevented, and the cooking efficiency can be improved.

In some embodiments, the steaming oven further comprises a water hardness detector disposed within the water storage tank for detecting the hardness of water within the water storage tank, different ranges of water hardness corresponding to different amounts of descaled water; a controller is electrically connected to the water hardness detector, the controller of the steaming oven further configured to: determining a descaling water amount for triggering a descaling procedure according to the water hardness detected by the water hardness detector; determining the accumulated water inflow of the steam generator after the descaling program is executed on the controller for the last time according to the water inflow detected by the flowmeter; and when the accumulated water inflow is greater than the descaling water amount, sending first prompt information, wherein the first prompt information is used for prompting a user to trigger a descaling program.

The steam generator can generate scale in the process of heating water, and the scale can not only block the steam generator, the water-vapor separator, the water inlet pipeline and the water drainage pipeline, but also influence the service life of the steaming and baking oven. Because water of different hardness produces different amounts of scale, the frequency with which descaling is required varies. As can be seen from the above embodiments, the hardness of the water in the water storage tank can be detected by the water hardness detector, with different ranges of water hardness corresponding to different amounts of scale-removing water. When the flowmeter detects that the accumulated water inflow is greater than the descaling water amount, the content of the scale in the steam oven reaches the standard of descaling, and at the moment, prompt information can be sent to a user to prompt the user to start a descaling procedure in time, so that the cooking efficiency of the steam oven is prevented from being influenced.

In some embodiments, the controller of the steaming oven is further configured to: determining an average temperature value of the steam generator according to the temperature value of the steam generator in the working process, which is detected by the first temperature sensor; and when the difference between the average temperature value and the reference temperature value is greater than a preset difference value, sending first prompt information, wherein the first prompt information is used for prompting a user to trigger a descaling program, and the reference temperature value is determined according to temperature data of the steam generator when the controller executes the cooking program for the first time.

It can be seen from the above embodiments that when the cooking program is executed for the first time by the steaming oven, no scale is generated in the steam generator, and the temperature data at this time can be used as the reference temperature. Because the temperature of the steam generator with the scale is higher than the temperature of the steam generator without the scale in the working process, when the difference between the average temperature value of the steam generator and the reference temperature value is larger than a preset difference value, the content of the scale in the steam oven reaches the standard of scale removal, and at the moment, prompt information can be sent to a user to prompt the user to start a descaling program in time and avoid influencing the cooking efficiency of the steam oven.

In some embodiments, the steaming oven further comprises a water storage tank detection switch, which is arranged on the water storage tank and is used for detecting the opening and closing state of the water storage tank; the controller of the steaming oven is electrically connected with the water storage tank detection switch, and the controller is also configured to: controlling the operation of the drainage pump to drain water in the steam generator and the water-steam separator in response to the descaling command; after the drainage of the drainage pump is finished, sending second prompt information, wherein the second prompt information comprises information for prompting a user to clean the water storage tank, put in clean water and put in a descaling agent; acquiring the opening and closing state of the water storage tank through a water storage tank detection switch; after the water storage tank is detected to be switched from the open state to the closed state, controlling a water inlet pump to pump third preset water into a steam generator and a water-steam separator, wherein the third preset water is the sum of water contained in the steam generator and the water-steam separator; after the preset descaling duration, controlling a drainage pump to drain water; and after the drainage of the drainage pump is finished, executing the preset times of cleaning operation, wherein the cleaning operation is an operation for cleaning the steam generator and the water-steam separator by controlling the water inlet pump and the drainage pump to work alternately.

In the above embodiments, the descaling is performed by chemical reaction of the descaling agent with the scale in the steam generator, the steam separator and the pipeline, so as to remove the scale. Therefore, when the descaling program is executed, the water in the steaming oven is completely discharged, then the water with the descaling agent is pumped, and after the reaction of the descaling agent and the scale is finished, the steam generator, the water-steam separator and the pipeline are washed. The water amount with the descaling agent can be the sum of the water amounts contained in the steam generator and the water-vapor separator, so that the scale in the steam generator and the water-vapor separator can be contacted with the descaling agent, and a chemical reaction can be generated. And because the reaction of the scale remover and the scale takes time, the steam generator, the steam separator and the pipeline can be washed after the preset scale removing time is up, so that the full reaction of the scale and the scale remover is ensured, and the scale removing effect is ensured.

In some embodiments, the steam oven further comprises: the second temperature sensor is arranged in the cavity and used for detecting the temperature in the cavity; the back heating pipe is arranged at the back of the cavity and used for heating food materials in the cavity; the bottom heating pipe is arranged at the bottom of the cavity and used for heating food materials in the cavity; a controller is electrically connected to the second temperature sensor, the back heating tube, and the bottom heating tube, the controller of the steamer further configured to: after the cooking program is started to be executed, controlling the back heating pipe to start heating; when the steam generator stops working, controlling the bottom heating pipe to start heating; and when the temperature value detected by the second temperature sensor is greater than the target cooking temperature, controlling the back heating pipe and the bottom heating pipe to stop heating.

According to the embodiment, the steam generator heats water to boiling for a certain time, and the temperature in the cavity of the steaming oven cannot rise rapidly at the moment, so that the temperature in the cavity can reach the target cooking temperature rapidly by opening the back heating pipe and the bottom heating pipe. When steam generator suspended operation, control bottom heating pipe begins to heat, can be so that the intracavity eat material be heated more evenly on the one hand, and on the other hand avoids back heating pipe and the long-time concurrent heating of bottom heating pipe, causes the high temperature of intracavity, is unfavorable for the control to the temperature in the cavity.

In a second aspect, an embodiment of the present application provides a control method applied to the steaming oven in the first aspect, where the method includes:

In a third aspect, an embodiment of the present application provides a controller, including: one or more processors; one or more memories; wherein the one or more memories are configured to store computer program code comprising computer instructions which, when executed by the one or more processors, cause the controller to perform the control method provided by the second aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium including computer instructions, which, when controlled on a computer, cause the computer to perform the method provided in the second aspect and possible implementation manners.

In a fifth aspect, embodiments of the present invention provide a computer program product, which is directly loadable into a memory and contains software code, and which, when loaded and executed by a computer, is able to carry out the method as provided in the second aspect and possible implementations.

It should be noted that the computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer readable storage medium may be packaged with or separately from a processor of the controller, which is not limited in this application.

The beneficial effects described in the second aspect to the fifth aspect in the present application may refer to the beneficial effect analysis of the first aspect, and are not described herein again.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of a steaming oven provided in an embodiment of the present application;

fig. 2 is a schematic hardware structure diagram of a controller according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of another steaming and baking oven provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another steaming and baking oven provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another steaming oven provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another steaming oven provided in the embodiments of the present application;

FIG. 7 is a schematic structural diagram of another steaming oven provided in the embodiments of the present application;

FIG. 8 is a schematic structural diagram of another steaming oven provided in an embodiment of the present application;

fig. 9 is a schematic flowchart of a control method of a steaming oven according to an embodiment of the present disclosure;

fig. 10 is a schematic hardware structure diagram of another controller according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present application, "a plurality" means two or more unless otherwise specified.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. In addition, when a pipeline is described, the terms "connected" and "connected" are used in this application to have a meaning of conducting. The specific meaning is to be understood in conjunction with the context.

The terms "comprising" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Furthermore, in the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

As described in the background art, a steaming and baking oven is increasingly popular with users as a kitchen appliance that can both bake and tenderly bake. However, in the existing steaming and baking oven, the water inflow in the steam generator cannot be accurately controlled, and excessive water inflow can wet food and affect the steaming and cooking effect; the water inflow is too little, the generated steam quantity is insufficient, the cooking efficiency is influenced, even the steam generator can be dried, and certain potential safety hazards exist.

In view of this, the embodiment of the present application provides a steam oven capable of accurately controlling a water inflow, in which a water pump is controlled to continuously pump a circulating water amount into a steam generator under the condition that an initial water amount is ensured in the steam generator, and the steam generator is suspended after operating for a first time period, so as to serve as a heating period. In a heating period, the water in the circulating water quantity can be completely converted into water vapor by the steam generator, so that the accurate control of the water inflow is realized.

To further describe the technical solution of the embodiment of the present application, fig. 1 is a structural diagram of a steaming oven provided in the embodiment of the present application.

Referring to fig. 1, the steaming and baking box 1 includes: a tank 101, a water storage tank 102, a water inlet line 103, a water inlet pump 104, a flow meter 105, a steam generator 106, a first steam line 107, a water-steam separator 108, a second steam line 109, and a controller 110 (110 not shown).

In some embodiments, the box 101 is used to protect electrical components inside the steaming oven 1, and a cavity for placing food therein is formed inside the box. For example, the casing 101 may be a rectangular parallelepiped as shown in fig. 1, or may have another shape.

In some embodiments, the storage tank 102 is horizontally disposed at the top of the outside of the cavity for storing water.

In some embodiments, the first port of the water inlet 103 is connected to the water storage tank 102, and the second port is connected to an opening at the bottom of the steam generator 106, so that the water in the water storage tank 102 can enter the steam generator 106 through the water inlet 103.

In some embodiments, the third port of the water inlet pipe 103 is communicated with the opening at the bottom of the water-vapor separator 108, and the water in the water storage tank 102 can enter the water-vapor separator 108 through the water inlet pipe 103. Also, since the third and third ports of the water inlet pipe 103 are ports of different straight pipes of the water inlet pipe 103, i.e., the third and third ports communicate, the steam generator 106 and the water vapor separator 108 form a communicator. In this way, the water drawn in the water-steam separator 108 may stabilize the amount of water in the steam generator 106, thereby delivering a steady amount of steam into the chamber.

In some embodiments, a water inlet pump 104 is provided on the water inlet line 103 for pumping water from the water storage tank 102 into the steam generator 106 and the water-vapor separator 108.

In some embodiments, a flow meter 105 is provided on the water inlet line 103 for detecting the amount of inlet water in the steam generator 106 and the water-vapor separator 108.

In some embodiments, a steam generator 106 is used to heat water from the storage tank 102 to boiling to generate steam.

Alternatively, the steam generator 106 may be vertically disposed at the back of the outside of the cavity.

In some embodiments, a first steam line 107 communicates the steam generator 106 with the water-steam separator 108 for conveying steam generated in the steam generator 106 into the water-steam separator 108.

In some embodiments, the water vapor separator 108 is in communication with the chamber via a second steam line 109 for separating water vapor from the steam generator 106 into gas and liquid, such that the separated water vapor is delivered to the chamber via the second steam line 109.

In some embodiments, the water vapor separator 108 is connected to the second steam line 109 at a higher interface than the water vapor separator 108 is connected to the first steam line 107, which may allow for easier ingress of water vapor into the cavity.

Alternatively, the water vapor separator 108 may be vertically disposed at the back of the outside of the chamber, and the top end of the water vapor separator 108 may be higher than the top end of the steam generator 106.

In some embodiments, as shown in fig. 2, the controller 110 is electrically connected to the water inlet pump 104, the flow meter 105, the steam generator 106 and the water-steam separator 108, and is used for generating operation control signals according to the instruction operation codes and the timing signals, and instructing the steaming oven 1 to execute the control instructions.

Illustratively, the controller 110 may be a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The controller 110 may also be other devices with processing functions, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application.

In some embodiments, as shown in fig. 3, the steaming oven 1 further comprises: a drain line 111, and a drain pump 112, wherein, as shown in fig. 2, the drain pump 112 is electrically connected to the controller 110.

In some embodiments, the drain line 111 is in communication with the storage tank 102 at a first end and the steam generator 106 at a second end, and the water vapor separator 108 is in communication with the drain line 111 through the first steam line 107 and the steam generator 106.

In some embodiments, a drain pump 112 is disposed on the drain line 111 for pumping the water in the steam generator 106 and the water-vapor separator 108 into the water storage tank 102.

In some embodiments, as shown in fig. 4, the steaming oven 1 further comprises: a first temperature sensor 113 is disposed in the steam generator 106 for detecting a temperature of the steam generator 106. Continuing with FIG. 2, the first temperature sensor 113 is electrically connected to the controller 110.

In some embodiments, as shown in fig. 5, the steaming oven 1 further comprises: a water hardness detector 114 disposed within the tank 102 for detecting the hardness of water in the tank 102. Continuing with FIG. 2, the water hardness detector 114 is electrically connected to the controller 110.

In some embodiments, as shown in fig. 6, the steaming oven 1 further comprises: a second temperature sensor 115, a back-heating pipe 116 and a bottom-heating pipe 117.

As further shown in fig. 2, the second temperature sensor 115, the back-heating pipe 116 and the bottom-heating pipe 117 are electrically connected to the controller 110.

In some embodiments, a second temperature sensor 115 is disposed within the cavity for sensing a temperature within the cavity.

In some embodiments, the back heating tube 116 is disposed at the bottom of the inner side of the cavity for heating the food material inside the cavity.

In some embodiments, the bottom heating tube 117 is disposed at the back of the inner side of the cavity for heating the food material inside the cavity.

In some embodiments, as shown in fig. 7, the steaming oven 1 further comprises: a display panel 118, an operation panel 119, a voice device 120, and a communicator 121 (121 not shown in the figure).

As shown in fig. 2, the display panel 118, the operation panel 119, the speech device 120, and the communicator 121 are electrically connected.

In some embodiments, the display panel 118 may be a liquid crystal display panel, an organic light-emitting diode (OLED) display panel. The specific type, size, resolution, etc. of the display panel are not limited. The display panel may be used to display a control panel of the steaming and baking oven 1, and the steaming and baking oven 1 may feed back the current operating state of the steaming and baking oven 1 through the display panel 118. For example, the steaming and baking oven 1 is in a preheating state, a baking state, a soft baking state, or the like.

Alternatively, as shown in fig. 8, one or more of the cooking program (including the target cooking temperature, the circulating water amount, the first time period, the second time period, and the like) selected by the user, the on/off state of the door of the toaster, the on/off state of the water storage tank detected by the water storage tank detection switch x, the temperature inside the cavity, and the water amount of the water storage tank 102 are displayed on the display panel 118.

In some embodiments, the operation panel 119 has function keys thereon. Illustratively, the function keys include an on-off key, a mode selection key, a temperature selection key, + (up key), - (down key), and the like. In this way, the user can interact with the steaming and baking oven 1 through the operation panel 119 to adjust the mode, temperature, and the like of the steaming and baking oven 1.

In some embodiments, the speech device 120 is used to send out a prompt message. Illustratively, when the accumulated water inflow is larger than the descaling water amount, a prompt message for prompting the user to trigger the descaling program is sent through the voice device 120. For another example, in the descaling procedure, after the drainage by the drainage pump 112 is finished, information for prompting the user to clean the water storage tank, put clean water and put a descaling agent is sent.

In some embodiments, the communicator is a component for communicating with external devices or external servers according to various communication protocol types. For example: the cooker communicator can comprise at least one of a Wi-Fi chip, a Bluetooth communication protocol chip, a wired Ethernet communication protocol chip and other network communication protocol chips or near field communication protocol chips, and an infrared receiver.

In some embodiments, the communicator 121 is electrically connected to each temperature sensor, and is capable of receiving a temperature value detected by each temperature sensor and transmitting the temperature value to an external device, for example, a terminal device of a user.

It is to be understood that the illustrated construction of the embodiments of the invention does not constitute a specific limitation of the steam oven. In other embodiments of the present application, the steamer may include more or fewer components than shown, or some components may be combined, some components may be separated, or a different arrangement of components may be used. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The following detailed description of the embodiments of the present application is made with reference to the accompanying drawings. It should be understood that the main body of the control method of the steaming oven provided hereinafter may be the steaming oven, and may also be a controller in the steaming oven.

As shown in fig. 9, the present application provides a control method of a steaming and baking oven, which may include the steps of:

s101, starting a cooking program set by a user, and obtaining a circulating water quantity corresponding to a target cooking temperature and a first time length and a second time length corresponding to the circulating water quantity according to a preset corresponding relation.

Wherein the cooking program includes a target cooking temperature.

In some embodiments, the amount of circulating water is different for different target cooking temperatures, which may allow the steam generator to generate an amount of steam that meets the target cooking temperature. The first time length and the second time length corresponding to different circulating water quantities are different, and the values of the first time length and the second time length are fixed values, so that the steam quantity meeting the target cooking temperature can be generated in each heating period, and the heating time length also meets the target cooking time length.

Illustratively, when the set range of the target cooking temperature is [ T1, T2], the first time period is A1 and the second time period is B1; when the set range of the target cooking temperature is [ T2, T3], the first time period is A2 and the second time period is B2. Wherein, A1+ B1= A2+ B2.

S102, in the process of executing the cooking program, under the condition that the steam generator has the initial water quantity, controlling the steam generator and the water inlet pump to work periodically.

Illustratively, when the target temperature in the cooking program is in the range of [ T1, T2] and the initial water amount is in the steam generator, the steam generator is controlled to pump in C1 water according to the heating A1 time period and the heating B1 pause time period, and pump in C1 water according to the heating A1 time period and the heating B1 pause time period, so that the steam generator and the water inlet pump are controlled to work periodically.

The embodiment shown in fig. 9 brings at least the following advantages: through set up the flowmeter on water inlet pipe, the inflow that detects steam generator that can be accurate to the inflow in every heating cycle of control is the circulation water yield. Under the condition that the steam generator has the initial water quantity, the steam generator can be directly controlled to heat the initial water quantity, and dry burning is avoided. And the steam generator is controlled, and the actions of heating, heating suspension and water inlet are completed in each heating period, so that the steam quantity generated by the steam generator is accurately controlled. The circulating water amount pumped by the steam generator in each heating period corresponds to the target cooking temperature in the cooking program, and the steam generated by heating the circulating water amount in each heating period can meet the heating requirement of the target cooking temperature. Meanwhile, the first duration (namely heating duration) of the continuous operation of the steam generator and the second duration (namely heating pause duration) of the pause operation of the steam generator correspond to the circulating water volume, so that the circulating water volume can be completely heated and converted into the steam in the first duration, and the accurate control of the steam in the cavity can be realized, and the cooking effect can be ensured.

In some embodiments, continuing as shown in fig. 9, the method provided in the embodiments of the present application further includes:

and S103, when the time for executing the cooking program reaches the target cooking time, controlling the cooking program to be ended, and controlling the drainage pump to pump the water in the steam generator and the water-steam separator back to the water storage tank.

According to the embodiment, when the cooking procedure is finished, the water pump is controlled to pump the residual water in the steam generator and the water-vapor separator back into the water storage tank, and the water in the steam generator, the water-vapor separator and the water inlet pipeline can be ensured to be in a water-free state after the cooking procedure is finished.

In some embodiments, the method provided in the embodiments of the present application further includes:

and S100, before the steam generator and the water inlet pump are controlled to work periodically, the water inlet pump is controlled to pump initial water quantity into the steam generator and the water separator.

Wherein the initial water amount is greater than a first preset water amount and less than or equal to a second preset water amount; the first preset water amount is the sum of the water amount of the steam generator during dry burning and the water amount consumed by the steam generator during the first heating in the first time, and the second preset water amount is half of the sum of the volumes of the steam generator and the water-steam separator.

According to the embodiment, the water-steam separator can be communicated with the steam generator through the water inlet pipeline, so that the water pumped into the water-steam separator can keep the water quantity in the steam generator stable, and the stable steam quantity is conveyed into the cavity. Because when starting the culinary art procedure, be in anhydrous state in the steam generator, if heating this moment can take place dry combustion method, have certain potential safety hazard. Therefore, it is necessary to store an initial amount of water in the steam generator before controlling the steam generator and the water feed pump to operate periodically, in order to prevent a dry-fire situation from occurring. To prevent dry-heating from occurring, the initial amount of water is not less than a first preset amount of water, i.e., the sum of the water at the dry-heating level and the water consumed by the steam generator at the first time during the first heating cycle. In order to avoid that the time required for heating the water to boiling is longer because the larger the amount of water, the initial amount of water is less than half the second preset amount, i.e. the sum of the volumes of the steam generator and the water-steam separator. Therefore, the quick generation of water vapor can be ensured, and the cooking efficiency is improved while the cooking safety is ensured.

In some embodiments, the present application also provides a control method of a steaming oven, which may include:

s201, acquiring a temperature value of the steam generator detected by the first temperature sensor.

S202, when the temperature value is larger than the water replenishing temperature value, controlling a water inlet pump to pump initial water amount into the steam generator and the water separator.

And the water supplementing temperature value represents the temperature value of the steam generator during dry burning.

It can be known from the above embodiments that, since the temperature of the steam generator is higher when dry burning occurs than when the steam generator is in normal operation, when the temperature of the first temperature sensor is detected to be higher than the water replenishing temperature value, it indicates that all the water in the steam generator has evaporated, and there is a possibility of dry burning occurring. At this time, the water inlet pump needs to be controlled to pump a certain amount of water into the steam generator. And after the water in the steam generator is completely evaporated, the steam generator is in a water-free state as when the steaming oven is opened, so that the water with the initial water quantity can be pumped into the steam generator, the occurrence of dry burning can be prevented, and the cooking efficiency can be improved.

s301, determining the descaling water amount for triggering a descaling program according to the water hardness detected by the water hardness detector.

Illustratively, when the water hardness ranges from 60 to 120ppm, the amount of scale removal water is X; when the water hardness is 120-180ppm, the descaling water amount is Y; when the water hardness is 181ppm or more, the amount of the scale removing water is Z.

And S302, determining the accumulated water inflow of the steam generator after the descaling program is executed on the controller for the last time according to the water inflow detected by the flow meter.

S303, when the accumulated water inflow is larger than the descaling water amount, sending out a first prompt message.

The first prompt message is used for prompting a user to trigger a descaling program.

For example, when the water hardness is 60-120ppm, the steam generator sends a message to the user prompting the user to trigger the descaling procedure when the accumulated water inflow after the controller last executed the descaling procedure is greater than X.

Because the steam generator can produce the incrustation scale at the in-process that heats water, the incrustation scale not only can cause the jam to steam generator, vapor separator, inlet channel and drain line, can influence the life of steaming oven moreover. Furthermore, water with different hardness generates different amount of scale, so the frequency of scale removal is different. It can be seen from the above embodiments that when different users use the steaming oven, the hardness of the water stored in the water storage tank is different, and therefore, the frequency of executing the descaling program is also different. The hardness of the water placed in the water reservoir by the user can be detected by a water hardness detector, different water hardness ranges corresponding to different amounts of descaling water. When the flowmeter detects that the accumulated water inflow is greater than the descaling water amount, the content of the scale in the steam oven reaches the standard of descaling, and at the moment, prompt information can be sent to a user to prompt the user to start a descaling procedure in time, so that the cooking efficiency of the steam oven is prevented from being influenced.

s401, determining an average temperature value of the steam generator according to the temperature value of the steam generator in the working process, which is detected by the first temperature sensor.

S402, when the difference between the average temperature value and the reference temperature value is larger than a preset difference value, first prompt information is sent out.

The first prompt message is used for prompting a user to trigger a descaling program, and the reference temperature value is determined according to temperature data of the steam generator when the controller executes the cooking program for the first time.

In some embodiments, because the detected temperature of the steam generator after reaching the water supplement temperature value is higher and does not belong to the temperature data of the steam generator at the normal water level, the temperature value after reaching the water supplement temperature value is removed and is not used as the determination data of the reference temperature.

In some embodiments, the present application further provides a control method of a steaming oven, which may include:

and S501, responding to the descaling command, controlling the work of the drainage pump to drain the water in the steam generator and the water-steam separator.

And S502, sending a second prompt message after the drainage of the drainage pump is finished.

The second prompt message comprises information for prompting a user to clean the water storage tank, put in clean water and put in a descaling agent.

S503, acquiring the opening and closing state of the water storage tank through the water storage tank detection switch.

S504, after the water storage tank is detected to be switched from the open state to the closed state, the water inlet pump is controlled to pump water with a third preset water quantity into the steam generator and the water-steam separator.

Wherein the third preset water amount is the sum of the water amounts which can be contained in the steam generator and the water-steam separator.

In this way, scale in both the steam generator and the steam separator may be brought into contact with the descaling agent and thereby chemically reacted.

And S505, after the preset descaling time, controlling the drainage pump to drain water.

Therefore, the full reaction of the water scale and the descaling agent can be ensured, and the descaling effect is ensured.

And S506, after the drainage of the drainage pump is finished, executing the cleaning operation for preset times.

Wherein the washing operation is an operation for washing the steam generator and the water-vapor separator by controlling the water inlet pump and the water discharge pump to work alternately.

In the above embodiments, the descaling procedure is performed by the descaling agent reacting with the scale in the steam generator, the steam separator and the pipeline sufficiently to remove the scale. Therefore, when the descaling procedure is executed, all the water in the steam oven needs to be discharged, then the water with the descaling agent needs to be pumped, and after the reaction of the descaling agent and the scale is completed, the steam generator, the water-steam separator and the pipeline are washed. The water amount with the descaling agent can be the sum of the water amounts contained in the steam generator and the water-vapor separator, so that the scale in the steam generator and the water-vapor separator can be contacted with the descaling agent, and a chemical reaction can be generated. And because the reaction of the scale remover and the scale takes time, the steam generator, the steam separator and the pipeline can be washed after the preset scale removing time is up, so that the full reaction of the scale and the scale remover is ensured, and the scale removing effect is ensured.

s601, after the cooking program is started to be executed, controlling the back heating pipe to start heating.

And S602, controlling the bottom heating pipe to start heating when the steam generator stops working.

S603, when the temperature value detected by the second temperature sensor is larger than the target cooking temperature, controlling the back heating pipe and the bottom heating pipe to stop heating.

It can be seen that the foregoing describes the solution provided by the embodiments of the present application primarily from a methodological perspective. In order to implement the above functions, the embodiments of the present application provide a hardware structure and/or a software module corresponding to each function. Those of skill in the art will readily appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present application, the controller may be divided into function modules according to the method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and another division manner may be provided in actual implementation.

An embodiment of the present application further provides a schematic diagram of a hardware structure of a controller, as shown in fig. 10, the controller 110 further includes a processor 1101, and optionally, a memory 1102 and a communication interface 1103, which are connected to the processor 1101. The processor 1101, memory 1102 and communication interface 1103 are connected by a bus 1104.

The processor 1101 may be a Central Processing Unit (CPU), a general purpose processor Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor 1101 may also be any other means having a processing function such as a circuit, device or software module. The processor 1101 may also include a plurality of CPUs, and the processor 1101 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

The memory 1102 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, which are not limited in this embodiment. The memory 1102 may be separate or integrated with the processor 1101. Memory 1102 may include computer program code embodied therein. The processor 1101 is configured to execute the computer program code stored in the memory 1102, so as to implement the control method provided by the embodiment of the present application.

Communication interface 1103 may be used for communicating with other devices or communication networks (e.g., an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.).

The bus 1104 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 1104 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.

The embodiment of the present application further provides a computer-readable storage medium, which includes computer-executable instructions, and when the computer-readable storage medium runs on a computer, the computer is enabled to execute any one of the control methods of the steaming oven provided in the foregoing embodiments.

The embodiment of the present application further provides a computer program product containing computer executable instructions, which when run on a computer, causes the computer to execute any one of the control methods of the steaming oven provided in the foregoing embodiments.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer-executable instructions. The processes or functions according to the embodiments of the present application are generated in whole or in part when the computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer executable instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer executable instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

While the present application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations may be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A steaming oven, comprising:

the box body is internally provided with a cavity for placing food materials;

a water storage tank installed outside the tank body for storing water;

the water-steam separator is communicated with the steam generator through a first steam pipeline and the cavity through a second steam pipeline and is used for carrying out gas-liquid separation on water steam from the steam generator, and the separated water steam is conveyed into the cavity through the second steam pipeline;

a controller electrically connected to the steam generator, the water inlet pump and the flow meter; the controller is configured to:

starting a cooking program set by a user, wherein the cooking program comprises a target cooking temperature; according to a preset corresponding relation, obtaining a circulating water quantity corresponding to the target cooking temperature and a first time length and a second time length corresponding to the circulating water quantity;

controlling the steam generator and the water inlet pump to periodically operate with an initial amount of water in the steam generator during the cooking process;

and after the steam generator stops working for the second time, controlling the water inlet pump to pump the circulating water into the steam generator according to the water inlet quantity of the steam generator detected by the flow meter.

2. The steaming oven as claimed in claim 1, further comprising:

the drainage pump is arranged on a drainage pipeline, one end of the drainage pipeline is connected with the water storage tank, the other end of the drainage pipeline is communicated with the steam generator and the water-vapor separator, and the drainage pump is used for pumping water in the steam generator and the water-vapor separator into the water storage tank;

the controller is electrically connected with the drain pump, the controller further configured to:

when the time for executing the cooking program reaches the target cooking time, controlling the cooking program to end, and controlling the drain pump to pump the water in the steam generator and the water-vapor separator back into the water storage tank.

3. The steaming oven as claimed in claim 1 or 2, wherein the water-vapour separator is further in communication with the water storage tank via the water inlet line, the controller being further configured to:

before the steam generator and the water inlet pump are controlled to work periodically, the water inlet pump is controlled to pump the initial water amount into the steam generator and the water separator, wherein the initial water amount is larger than a first preset water amount and smaller than or equal to a second preset water amount;

the first preset water amount is the sum of the water amount of the steam generator during dry burning and the water amount consumed by the steam generator during first heating in a first time period; the second preset water amount is half of the sum of the volumes of the steam generator and the water-steam separator.

4. The steaming oven of claim 3, further comprising a first temperature sensor disposed in the steam generator for detecting a temperature of the steam generator;

the controller is electrically connected with the first temperature sensor, the controller further configured to:

acquiring a temperature value of the steam generator detected by the first temperature sensor;

when the temperature value is larger than the water supplementing temperature value, the water inlet pump is controlled to pump water of the initial water amount into the steam generator and the water separator, and the water supplementing temperature value represents the temperature value of the steam generator when dry burning occurs.

5. The steaming oven as claimed in claim 2, further comprising a water hardness detector disposed within the water storage tank for detecting the hardness of the water within the water storage tank, different ranges of water hardness corresponding to different amounts of descaled water;

the controller is electrically connected to the water hardness detector, the controller further configured to:

determining a descaling-water amount that triggers a descaling procedure according to the water hardness detected by the water hardness detector;

determining the accumulated water inflow of the steam generator after the descaling program is executed on the controller last time according to the water inflow detected by the flowmeter;

and when the accumulated water inflow is larger than the descaling water amount, sending first prompt information, wherein the first prompt information is used for prompting a user to trigger the descaling program.

6. The steaming oven of claim 2, further comprising a first temperature sensor disposed in the steam generator for detecting a temperature of the steam generator;

determining an average temperature value of the steam generator according to the temperature value of the steam generator in the working process, which is detected by the first temperature sensor;

and when the difference between the average temperature value and the reference temperature value is larger than a preset difference value, sending a first prompt message, wherein the first prompt message is used for prompting a user to trigger a descaling program, and the reference temperature value is determined according to the temperature data of the steam generator when the controller executes the cooking program for the first time.

7. The steaming oven of claim 3, further comprising a water storage tank detection switch disposed on the water storage tank for detecting an open/close state of the water storage tank;

the controller is electrically connected with the water storage tank detection switch, and the controller is further configured to:

controlling the drain pump to operate to drain water from the steam generator and the water-vapor separator in response to a descaling command;

sending a second prompt message after the drainage of the drainage pump is finished, wherein the second prompt message comprises information for prompting a user to clean the water storage tank, put in clean water and put in a descaling agent;

acquiring the opening and closing state of the water storage tank through the water storage tank detection switch;

after the water storage tank is detected to be switched from the open state to the closed state, controlling the water inlet pump to pump a third preset amount of water into the steam generator and the water-steam separator, wherein the third preset amount of water is the sum of the amounts of water which can be contained in the steam generator and the water-steam separator;

after the preset descaling time is passed, controlling the drainage pump to drain water;

and after the drainage of the drainage pump is finished, performing cleaning operation for a preset number of times, wherein the cleaning operation is an operation for cleaning the steam generator and the water-steam separator by controlling the water inlet pump and the drainage pump to work alternately.

8. The steaming oven of claim 1, further comprising:

the second temperature sensor is arranged in the cavity and used for detecting the temperature in the cavity;

the back heating pipe is arranged at the back of the cavity and used for heating food materials in the cavity;

the bottom heating pipe is arranged at the bottom of the cavity and used for heating food materials in the cavity;

the controller is in electrical connection with the second temperature sensor, the back heating tube, and the bottom heating tube, the controller further configured to:

controlling the back heating pipe to start heating after the cooking program is started to be executed;

controlling the bottom heating pipe to start heating when the steam generator stops working;

and when the temperature value detected by the second temperature sensor is greater than the target cooking temperature, controlling the back heating pipe and the bottom heating pipe to stop heating.

9. A control method of a steaming oven applied to the steaming oven of any one of claims 1 to 8, comprising:

controlling the steam generator and the water intake pump to be periodically operated with an initial amount of water in the steam generator during the cooking process;

and after the steam generator is controlled to work for the second time period, controlling the water inlet pump to pump the circulating water into the steam generator according to the water inlet quantity of the steam generator detected by the flow meter.