Cooking cavity inner wind field filtering assembly and cooking utensil

Abstract

The embodiment of the utility model discloses a wind field filtering assembly in a cooking cavity and a cooking utensil. The air field filtering assembly in the cooking cavity comprises a filtering block and a telescopic structure. The telescopic structure is arranged outside the cooking cavity, the telescopic structure drives the telescopic end to drive the filter block to enter the cooking cavity or exit from the cooking cavity, and the filter block entering the cooking cavity is located in a flowing path of air in the cooking cavity. According to the technical scheme, the telescopic structure is utilized, the filtering block is arranged to be in a telescopic mode, so that the flowing path of air in the cooking cavity is filtered to different degrees, compared with the mode that an air channel is completely blocked in the prior art, the filtering block in the embodiment can be in the state of different stretching degrees, the influence on the air volume is smaller, and the filtering effect is better. The influence on cooking performance can be reduced, and the cooking effect in a filtering state is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of oil smoke and odor filtering in cooking utensils, and in particular to an air field filtering component in a cooking cavity and a cooking utensil. Background Art

[0002] As people continue to pursue efficient and convenient life, cooking methods are also constantly developing towards efficient cooking, resulting in the emergence of many types of cooking utensils. Among them, cooking utensils based on the principle of hot air heating, such as ovens, steam-bake machines or air fryers, are favored by the majority of users due to their high efficiency.

[0003] These hot air-heating appliances typically feature a cooking chamber, where a heating tube and fan create a circulating hot air field to cook the food within. To enhance the user experience, filters are often installed in the air duct to filter out fumes and odors generated during cooking.

[0004] However, setting a filter block on the air duct will inevitably affect the air volume on the air duct, thereby affecting the cooking performance and resulting in poor cooking effect. Utility Model Content

[0005] The embodiments of the present application provide a cooking cavity air field filter assembly and a cooking utensil to reduce the impact of the filter block on the air volume in the air duct, reduce the impact on cooking performance, and improve the cooking effect in the filtering state.

[0006] In a first aspect, an embodiment of the present application provides an air field filter assembly in a cooking cavity, the air field filter assembly in the cooking cavity comprising: a filter block, a telescopic structure;

[0007] The telescopic structure is arranged outside the cooking cavity. The telescopic structure drives the telescopic end to drive the filter block into or out of the cooking cavity. The filter block entering the cooking cavity is located in the flow path of the air in the cooking cavity.

[0008] In a second aspect, an embodiment of the present application provides a cooking utensil, comprising the cooking cavity air field filter assembly provided by any embodiment of the present application.

[0009] In the technical solution of an embodiment of the present application, a cooking cavity air filter assembly includes a filter block and a telescopic structure. The telescopic structure is disposed outside the cooking cavity, and the telescopic structure drives the filter block to enter or exit the cooking cavity. When the filter block enters the cooking cavity, it is located in the air flow path within the cooking cavity. In the technical solution of this embodiment, the telescopic structure is used to configure the filter block to be retractable, thereby filtering the air flow path within the cooking cavity to varying degrees. Compared to the prior art method of completely blocking the air duct, the filter block in this embodiment can be extended to different degrees, which has a smaller impact on air volume, reduces the impact on cooking performance, and improves the cooking effect in the filtered state. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of an air field filter assembly in a cooking cavity provided in Example 1 of the present application;

[0011] Figure 2 A schematic structural diagram of a filter block provided in Example 1 of the present application;

[0012] Figure 3 A schematic diagram of the filter block and telescopic structure provided in Example 1 of the present application;

[0013] Figure 4 This is a schematic diagram of the filter block provided in Example 1 of the present application when it is fully extended;

[0014] Figure 5 A schematic structural diagram of a layered filter block provided in Example 2 of the present application;

[0015] Figure 6 Schematic diagram of different extension combinations of filter blocks provided in Example 2 of the present application;

[0016] Figure 7 A schematic structural diagram of a cooking utensil provided in Example 3 of the present application;

[0017] Figure 8 A schematic flow chart of a cooking cavity air field filtering method provided in Example 4 of the present application.

[0018] Figure numerals: 100, wind field filter assembly; 101, filter block; 1011, filter frame; 1012, filter net; 1013, activated carbon; 1014, heating element; 102, telescopic structure; 103, wind field data detector; 104, cooking cavity; 105, fan; 106, heating tube. DETAILED DESCRIPTION

[0019] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present application and are not intended to limit the present application. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions of the present application, not all of the structures.

[0020] Example 1

[0021] Figure 1 This is a schematic diagram of an air field filter assembly in a cooking cavity provided in Example 1 of the present application, as shown in FIG. Figure 1 As shown, the cooking cavity air field filter assembly provided in this embodiment includes: a filter block 101, a telescopic structure 102;

[0022] The telescopic structure is arranged outside the cooking cavity. The telescopic structure drives the telescopic end to drive the filter block into or out of the cooking cavity. The filter block entering the cooking cavity is located in the flow path of the air in the cooking cavity.

[0023] In addition, in order to achieve more precise control, the wind field filtering component in the cooking cavity of this embodiment can also include a wind field data detector 103, and the wind field data detector 103 and the telescopic structure 102 are both connected to the controller; the controller controls the telescopic end movement of the telescopic structure 102 according to the wind field data detected by the wind field data detector 103.

[0024] The filter block 101 is used to filter out large particles in the air to achieve air purification, and can be made of filter cotton, activated carbon, ultrafiltration mesh and other materials. In an optional embodiment of this embodiment, the specific structure of the filter block 101 can be referred to Figure 2 , Figure 2 This is a structural diagram of a filter block provided in Example 1 of the present application.

[0025] like Figure 2 As shown, the filter block 101 of this embodiment may include two filter screens 1012 and a filter air duct.

[0026] Multiple filter channels are arranged side by side, and two filter screens are connected to the ends of the multiple filter channels respectively; activated carbon 1013 is distributed in the filter channels. To provide support, the filter block 101 may also include a filter frame 1011, which surrounds the filter screen 1012 and the outside of the filter channels.

[0027] In such Figure 2 In the optional structure of the filter block 101 shown, the filter block 101 further includes a heating element 1014, which is embedded in the filter air channel to heat the gas passing through the filter air channel.

[0028] The heating element 1014 may be a plurality of heating wires inserted into the filter block 101 . In order to prevent the heating element 1014 from shifting in the filter block 101 , one end of the heating element 1014 may be fixed to the filter frame 1011 .

[0029] Therefore, the aforementioned filter frame 1011 is mainly used to fix the outer shape of the filter block 101 and provide support for the installation of the internal heating element 1014.

[0030] In addition, the filter 1012 can be used to filter large impurities. As the airflow blows towards the filter 1012, large impurities are usually attached to the filter 1012. The activated carbon 1013 is stacked in multiple layers and forms a metal airway as the airflow passes through. This multi-layer stacking method can increase gas flow, more effectively utilize the gaps in the activated carbon 1013, and improve the efficiency of impurity adsorption.

[0031] like Figure 2 In the filter block 101 shown, there are two heating elements 1014, which are arranged according to the arrangement shown in the figure. This can increase the heating rate inside the filter block 101, improve the melting efficiency of impurities adsorbed in the filter block 101, and thereby improve the cleaning effect of the filter block 101.

[0032] In addition, the wind field data detector 103 may include a gas sensor, an odor sensor, and a temperature sensor, and the types of sensors included therein may be adjusted according to specific needs. In various embodiments of the present application, particle sensors, olfactory sensors, and temperature sensors are used as examples for description.

[0033] Correspondingly, in this embodiment, the wind field data detected by wind field data detector 103 may include concentration data of particles of various sizes in the wind field, odor data contained in the wind field, and cavity temperature data. It should be noted that since the aforementioned concentration data and odor data are both gas-related parameters, in the embodiments of this application, the concentration data and odor data may be collectively referred to as gas data.

[0034] In addition, in this embodiment, since the filter block 101 is used to filter the odorous substances in the air duct, its setting position can be on a certain air duct formed in the wind field. Usually, the wind direction of the air duct at the air outlet is relatively clear, so it can be set at the air outlet. For details, please refer to Figure 3 , Figure 3 This is a schematic diagram of the setting of the filter block and telescopic structure provided in Example 1 of the present application.

[0035] like Figure 3 As shown, the direction indicated by the arrow is the wind direction in the wind field. Figure 3At a position close to the air outlet, a filter block 101 and a telescopic structure 102 are arranged along the direction perpendicular to the wind direction, for filtering the air before it flows out of the air outlet. Figure 3 The state shown is a state in which the filter block 101 is completely retracted, that is, the air duct of the air outlet is not blocked by the filter block 101 .

[0036] The controller can control the movement of the telescopic end of telescopic structure 102 based on wind field data, thereby pushing filter block 101 into the air duct in a direction perpendicular to the wind direction. Telescopic structure 102 can include a motor, a drive shaft, and an elastic member. The drive shaft has multiple strokes, and the volume of the filter block entering the cooking cavity increases as the drive shaft stroke increases.

[0037] See also Figure 4 , Figure 4 This is a schematic diagram of the filter block provided in Example 1 of the present application when it is fully extended.

[0038] like Figure 4 As shown, the filter block 101 is pushed out and completely blocks the air duct of the air outlet, and the wind is filtered by the filter block 101 before escaping from the air outlet.

[0039] It should be noted that the controller in this embodiment may be a controller included in the cooking appliance to which the cooking cavity belongs, or may be a controller provided separately for the filter assembly.

[0040] The controller will control the extent to which the filter block 101 extends into the air duct according to the wind field data. Figure 3 and Figure 4 In addition to the two extreme states, the extension degree of the filter block 101 can also be one-fifth, two-fifths, half, etc. The specific extension degree can be quantified based on specific wind field data. The quantification method can refer to the subsequent embodiments and will not be repeated here.

[0041] It should be noted that, in the above structure, the telescopic structure 102 may include a motor, a drive shaft and an elastic member;

[0042] The motor is fixed outside the cooking cavity, connected to the driving shaft, and drives the driving shaft to move;

[0043] One end of the elastic member is connected to the motor, and the other end is connected to the filter block;

[0044] An end of the driving shaft away from the motor and an end of the elastic member connected to the filter block form a telescopic end to drive the filter block into or out of the cooking cavity.

[0045] Among them, the telescopic end is mainly used to transmit the rotational motion of the motor output shaft into linear motion. The telescopic structure can also be provided with a guide groove, which is mainly used to further limit the movement direction of the filter block 101. The setting position of the guide groove can be referred to Figure 4 As shown in FIG, the filter block 101 can be completely retracted into the guide groove, and under the restriction of the guide groove, the filter block 101 extends and retracts along the direction of the guide groove.

[0046] In this embodiment, the cooking cavity air filter assembly includes a filter block and a telescopic structure. The telescopic structure is disposed outside the cooking cavity. The telescopic structure drives the filter block to enter or exit the cooking cavity. When the filter block enters the cooking cavity, it is positioned in the air flow path within the cooking cavity. In this embodiment, the telescopic structure allows the filter block to be retracted, thereby filtering the air flow path within the cooking cavity to varying degrees. Compared to the prior art method of completely blocking the air duct, the filter block in this embodiment can be extended to varying degrees, which minimizes the impact on air volume, reduces the impact on cooking performance, and improves the cooking effect when in the filtered state.

[0047] Example 2

[0048] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of a layered filter block provided in Example 2 of the present application. In this embodiment, the filter blocks and the telescopic structures are provided in plurality; each telescopic structure drives a filter block to enter or exit the cooking cavity.

[0049] Specifically, such as Figure 5 As shown, among the multiple filter blocks 101, each filter block 101 is driven by a telescopic end, and different numbers of filter blocks 101 can be controlled to enter the cooking cavity to achieve different degrees of filtration.

[0050] Among them, different numbers of filter blocks 101 can have different extension combinations, which can be referred to Figure 6 , Figure 6 This is a schematic diagram of different extension combinations of filter blocks provided in Example 2 of the present application.

[0051] like Figure 6 As shown on the left, three filter blocks can be set, one of which is set as combination 1, and the other two are combination 2. If the filtering demand is low at this time, combination 1 can be extended, and if the filtering demand is high at this time, combination 2 can be extended. Figure 6 The right side shows that two filter blocks 101 are set.

[0052] Of course, in this embodiment, the thickness of each filter block 101 is different, and filtering of different thicknesses can be achieved by controlling the extension of different layers of filter blocks 101. It should be noted that the thicker the filter block 101, the stronger the filtering effect.

[0053] Of course, the above is just an example. Development and production personnel can adjust the quantity and combination based on relevant laboratory data to adapt to more filtration requirements.

[0054] It should be noted that the number of extended filter blocks can be combined with the extension length in the above embodiment, and the combination can meet more diverse needs. In other words, based on the above extension length, the number of extended filter blocks can be further controlled.

[0055] Example 3

[0056] See also Figure 7 , Figure 7 This is a schematic diagram of the structure of a cooking utensil provided in Example 3 of this application. Figure 7 As shown, the cooking appliance provided in this embodiment may include the cooking cavity air field filter assembly 100 provided in the above embodiment.

[0057] In addition, the cooking appliance is provided with a cooking cavity 104, and the cooking cavity 104 includes a convection cavity and a heating cavity that are connected;

[0058] The heating cavity is used to accommodate food;

[0059] A heating tube 106 and a fan 105 are provided in the convection chamber. The heating tube 106 is used to heat the air in the convection chamber, and the fan 105 is used to drive the air to flow between the convection chamber and the heating chamber.

[0060] A through hole communicating with the convection cavity is provided in the convection cavity, and the filter block enters and exits the convection cavity through the through hole.

[0061] The filter block entering the cooking cavity is located on the flow path of the air which flows from the convection cavity to the heating cavity after being driven by the fan.

[0062] Example 4

[0063] See also Figure 8 , Figure 8 This is a flow chart of a cooking cavity air field filtering method provided in the fourth embodiment of the present application. This method can be applied to the cooking appliance in the aforementioned embodiment, and can be specifically executed by a controller included in the cooking appliance.

[0064] like Figure 8 As shown, the cooking cavity air field filtering method provided in this embodiment may include:

[0065] Step 801: When the cooking appliance is in a target cooking mode, obtain wind field data detected by a wind field data detector.

[0066] In this step, the target cooking mode refers to any cooking mode supported by the cooking utensil. For an air fryer, the cooking modes it supports may include: chicken wings cooking, French fries cooking, etc. The target cooking utensil in this step can be any cooking mode of chicken wings cooking or French fries cooking.

[0067] Based on the description of the aforementioned embodiment, the wind farm data detector may include a gas sensor and a temperature sensor. The gas sensor may include a particle sensor and an olfactory sensor, or may include only a particle sensor. Accordingly, the particle sensor detects the concentration of particulate matter in the wind farm gas, the olfactory sensor detects odor data, and the temperature sensor detects the temperature inside the chamber.

[0068] Step 802: Control the movement of the telescopic end of the telescopic structure according to the wind field data to control the extent to which the filter block extends into any air duct in the wind field.

[0069] In this step, the extension degree can encompass multiple categories, such as the length of extension or the amount of extension, both of which can be referred to as the extension degree. Taking the extension length as an example, if the gas sensor only includes a particle sensor, the first target filtration level currently required for the air in the cooking chamber can be determined based on the wind field data. It should be noted that the filtration level corresponds to multiple preset intervals of the wind field data.

[0070] In a specific example, the control of the extension degree here only utilizes the gas data contained in the wind field data. Taking the example where the gas data only contains the concentration data detected by the particle sensor, usually, the particle size mainly to be filtered can be determined through experiments, and then the corresponding particle sensor is selected to detect the concentration of the particle size.

[0071] Multiple concentration intervals are pre-set, such as [50, 60), [60, 70), [70, 80), and so on. The corresponding filtration levels are then ranked as primary, secondary, tertiary, and so on. If the detected concentration is 55 (the unit of concentration data can be micrograms per cubic meter, but for ease of explanation, the unit is omitted after the value), since it falls within the interval [50, 60), the corresponding first target filtration level is primary.

[0072] Furthermore, each level can be mapped to the degree of extension, for example, level one corresponds to one-fifth of the extension length, level two corresponds to half the extension length, level three corresponds to four-fifths of the extension length, and so on. In this embodiment, after determining the first target filtering level, the target extension length corresponding to the first target filtering level can be determined based on the predetermined mapping relationship between the filtering level and the extension degree.

[0073] Taking the above example as an example, since the first target filtration level is determined to be level 1, the corresponding target extension length is one-fifth. Once the target extension length is determined, the telescopic end of the telescopic structure can be controlled to extend according to the target extension length, thereby driving the filter block to extend into the air duct by the target extension length. In other words, the telescopic end is controlled to push the filter block out one-fifth of the length into the air duct.

[0074] In addition, taking the extension number as an example, when the gas data only contains concentration data, the second target filtration level currently required for the air in the cooking cavity is first determined based on the wind field data; then, based on the predetermined mapping relationship between the filtration level and the extension number, the target extension number corresponding to the second target filtration level is determined; finally, the target extension number of telescopic substructures is controlled to extend according to the target extension degree, so as to drive the target extension number of filter layers to extend into the air duct.

[0075] The process of determining the second target filtering level is the same as the process of determining the first target filtering level, and will not be repeated here.

[0076] The mapping relationship between filtration level and extension amount can be predetermined based on experimental data. In a specific example, level 1 corresponds to one layer, level 2 corresponds to two layers, level 3 corresponds to three layers, and so on. Still using the aforementioned concentration data of 55 as an example, the second target filtration level is level 1, and the corresponding target extension amount is one layer.

[0077] In addition, when the gas data also includes odor data, if the odor data is a pre-set odor, such as a burnt smell, the telescopic end can be directly controlled to completely push the filter block out, and the heating tube can be stopped to stop further heating of the food.

[0078] To further maintain cooking performance, in this step, air volume and temperature compensation can be performed after the filter block is pushed out. In this embodiment, the wind field data also includes the cavity temperature, and the hot air circulation component in the cooking appliance includes a heating tube and a fan. Specifically, the air volume compensation value can be determined based on the degree to which the filter block extends into the air duct, and the fan speed can be adjusted based on the air volume compensation value. Then, the temperature compensation value can be determined based on the cavity temperature and the target cooking mode of the cooking appliance, and the heating power of the heating tube can be adjusted based on the temperature compensation value.

[0079] Since the extension of the filter block has different effects on the air volume, the aforementioned filtration levels can be further mapped to air volume compensation values. The air volume compensation values corresponding to different filtration levels can be obtained by laboratory measurements.

[0080] Furthermore, since the target cooking mode includes the desired temperature within the cavity, i.e., the target temperature, the target temperature can be determined based on the target cooking mode. The difference between the target temperature and the cavity temperature can then be used as a temperature compensation value, and the heating power of the heating tube can be adjusted based on this difference. The heating power of the heating tube adjusted based on this difference can be determined using a formula for the relationship between heating power and temperature.

[0081] It should be noted that, in addition to being in a specific cooking mode, this embodiment also allows for periodic automatic or manual cleaning of the cooking chamber air field filter. During periodic automatic cleaning, the filter block is fully pushed out, the fan speed is maximized, and the heating tube temperature is maximized. Concentration data is then monitored in real time until it falls below a preset threshold.

[0082] Manual cleaning is to push the filter block out completely, the fan speed is the maximum, the heating tube temperature is the highest, and then the working time reaches the preset time and stops.

[0083] Note that the above are only preferred embodiments of the present application and the technical principles employed. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present application. The scope of the present application is determined by the scope of the appended claims.

Claims

1. A cooking cavity air field filter assembly, characterized in that: The cooking cavity air field filter assembly comprises: a filter block (101) and a telescopic structure (102); The telescopic structure is arranged outside the cooking cavity. The telescopic structure drives the telescopic end to drive the filter block into or out of the cooking cavity. The filter block entering the cooking cavity is located in the flow path of the air in the cooking cavity.

2. The cooking cavity air field filter assembly according to claim 1, characterized in that: The telescopic structure includes a motor, a drive shaft and an elastic member; The motor is fixed outside the cooking cavity, connected to the driving shaft, and drives the driving shaft to move; One end of the elastic member is connected to the motor, and the other end is connected to the filter block; An end of the driving shaft away from the motor and an end of the elastic member connected to the filter block form a telescopic end to drive the filter block into or out of the cooking cavity.

3. The cooking cavity air field filter assembly according to claim 2, characterized in that: The driving shaft has a plurality of strokes, and the volume of the filter block entering the cooking cavity increases as the stroke of the driving shaft increases.

4. The cooking cavity air field filter assembly according to claim 1, characterized in that: The filter blocks and the telescopic structures are provided in plurality; Each telescopic structure drives a corresponding filter block to enter or exit the cooking cavity.

5. The cooking cavity air field filter assembly according to any one of claims 1 to 4, characterized in that: The filter block includes two filter screens and multiple filter airways; The plurality of filter air passages are arranged side by side, and the two filter screens are respectively connected to two ends of the plurality of filter air passages; Activated carbon is distributed in the filter air passage.

6. The cooking cavity air field filter assembly according to claim 5, characterized in that: The filter block further includes a filter frame, which surrounds the filter mesh and the filter air duct.

7. The cooking cavity air field filter assembly according to claim 6, characterized in that: The filter block further comprises a heating element; The heating element is embedded in the filter air passage to heat the gas passing through the filter air passage.

8. A cooking utensil, characterized in that: It comprises the cooking cavity air field filter assembly as described in any one of claims 1-7.

9. The cooking appliance according to claim 8, characterized in that The cooking cavity comprises a convection cavity and a heating cavity which are connected to each other; The heating cavity is used to accommodate food; A heating tube and a fan are provided in the convection chamber, the heating tube is used to heat the air in the convection chamber, and the fan is used to drive the air to flow between the convection chamber and the heating chamber; A through hole communicating with the convection cavity is provided in the convection cavity, and the filter block enters and exits the convection cavity through the through hole.

10. The cooking appliance according to claim 9, characterized in that The filter block entering the cooking cavity is located on the flow path of the air which flows from the convection cavity to the heating cavity after being driven by the fan.

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