An oven and its baking control method

Abstract

The present invention discloses an oven and its baking control method, which obtains the actual temperature T2 of the tray at every set time; calculates the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, changes the height of the tray to make it away from the heating tube to prevent the food from being overcooked by high temperature; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, changes the height of the tray to make it close to the heating tube to avoid the food from being undercooked; therefore, the present invention improves the baking effect of the food and prevents the food from being undercooked outside and overcooked inside through the automatic adjustment of the tray height.

Description

Technical Field

[0001] The present invention belongs to the technical field of ovens, and specifically relates to an oven and a baking control method thereof. Background Art

[0002] When a user uses an oven to bake foods such as cakes and breads, the recipes provided in the oven can be used to guide the baking. The recipes include the types of raw materials, dosages, preparation methods, oven temperature settings, the layer in the oven where the baking tray is placed, etc. In addition to the material preparation process, the control of the baking temperature plays a key role in the final baking effect.

[0003] Currently, the temperature control of ovens is not very ideal, and the temperature uniformity effect is not good. The temperature inside the oven fluctuates above and below the set temperature, and the fluctuation range is relatively large. Therefore, the temperature difference between different layers (different heights) in the oven is relatively large. If the user cannot accurately place the baking tray at the required layer, it may cause the baked food to be undercooked or burnt. The temperature of a certain layer will change during the entire baking process, showing a situation of rising and falling, which to a certain extent affects the final baking effect.

[0004] Currently, for recipes such as roasting chickens and roasting meats, the oven is equipped with a rotating grill and a roasting fork, which rotate during baking to prevent the part of the food close to the heat source from being burnt due to long-term static baking, or to prevent the baked food from having a poor taste due to uneven heating. Using the rotation method for baking can, to a certain extent, avoid situations such as burning and undercooking caused by poor oven temperature control. However, there are still some problems that cannot be solved.

[0005] Problem 1: Although the rotating baking solves the problem of food burning or uneven cooking to a certain extent, there will still be a high-temperature area during the rotation process, which will cause the surface of the baked food to lose water severely and become too dry, resulting in a poor taste.

[0006] Problem 2: The grill and the roasting fork can only be used for roasting meats, and cannot be used for baking pastries such as cakes, cookies, and breads. Summary of the Invention

[0007] The present invention provides a baking control method for an oven, which solves the problem of poor baking effect in the prior art.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0009] A baking control method for an oven, comprising:

[0010] Obtaining the set height H1 of the tray and the set temperature T1 of the oven inner cavity;

[0011] Control the tray to rise to the set height H1; control the heating tube to work so that the temperature inside the oven cavity reaches the set temperature T1;

[0012] Every set time, perform the following steps:

[0013] Obtain the actual temperature T2 of the tray;

[0014] Calculate the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1;

[0015] Judge whether the absolute value of △T is greater than the set threshold;

[0016] If so, judge whether the actual temperature T2 is greater than the set temperature T1;

[0017] If so, change the height of the tray to move it away from the heating tube; if not, change the height of the tray to move it closer to the heating tube.

[0018] Furthermore, the heating tube is located in the upper part of the oven cavity;

[0019] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, lower the height of the tray to move it away from the heating tube;

[0020] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, raise the height of the tray to move it closer to the heating tube.

[0021] Still further, the heating tube is located in the lower part of the oven cavity;

[0022] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, raise the height of the tray to move it away from the heating tube;

[0023] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, lower the height of the tray to move it closer to the heating tube.

[0024] Even further, the heating tubes are respectively arranged in the upper and lower parts of the oven cavity;

[0025] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, lower or raise the height of the tray to make the tray close to the central position between the upper and lower heating tubes in the oven cavity so that the tray is away from the upper and lower heating tubes in the oven cavity;

[0026] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, raise or lower the height of the tray to make the tray close to the upper or lower heating tube in the oven cavity.

[0027] Further, changing the height of the tray specifically includes: changing the height of the tray in a set height adjustment step.

[0028] Further, set the threshold = K * T1, where 0 < K < 1.

[0029] Still further, obtain the actual temperature T2 of the tray through a temperature sensor provided on the tray.

[0030] Even further, obtaining the set height H1 of the tray and the set temperature T1 of the oven inner cavity specifically includes: the oven controller receives the recipe selected by the user and queries the preset database to obtain the set height H1 of the tray and the set temperature T1 of the oven inner cavity corresponding to the recipe.

[0031] Still further, obtaining the set height H1 of the tray and the set temperature T1 of the oven inner cavity specifically includes: there are knobs and / or buttons provided on the operation panel of the oven for receiving the operation information applied thereto and sending it to the oven controller; the oven controller obtains the set height H1 of the tray and the set temperature T1 of the oven inner cavity according to the received operation information.

[0032] An oven, comprising:

[0033] An oven inner cavity having an accommodation space;

[0034] A heating tube located in the accommodation space;

[0035] A tray located in the accommodation space;

[0036] A lifting drive mechanism for driving the tray to move up and down to change the height of the tray;

[0037] A temperature acquisition unit for acquiring the actual temperature T2 of the tray;

[0038] An oven controller for obtaining the set height H1 of the tray and the set temperature T1 of the oven inner cavity; controlling the tray to rise to the set height H1; controlling the heating tube to work so that the temperature of the oven inner cavity reaches the set temperature T1; and calculating the temperature difference △T = T2 - T1 between the actual temperature T2 of the tray and the set temperature T1 every set time; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, changing the height of the tray to make the tray away from the heating tube; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, changing the height of the tray to make the tray close to the heating tube.

[0039] Compared with the prior art, the advantages and positive effects of the present invention are as follows: For the oven and its baking control method of the present invention, the actual temperature T2 of the tray is obtained every set time; the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1 is calculated; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, the height of the tray is changed to make it away from the heating tube to prevent the food from being overcooked by high temperature; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, the height of the tray is changed to make it close to the heating tube to avoid the food from being undercooked; therefore, through the automatic adjustment of the tray height, the present invention improves the baking effect of the food and prevents the food from being undercooked on the inside and overcooked on the outside.

[0040] After reading the detailed description of the embodiments of the present invention in conjunction with the drawings, other features and advantages of the present invention will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a flowchart of an embodiment of the baking control method of the oven proposed by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0043] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0044] In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The oven and its baking control method of this embodiment solve the problems of the user's trouble in placing the baking tray at a fixed point and the poor temperature control and temperature uniformity of the oven, realizing the user's unrestricted placement of the tray and accurately controlling the temperature during the baking process. Below, the oven and its baking control method will be described in detail.

[0046] The oven includes an oven controller, an oven inner cavity, heating tubes, a tray, a lifting drive mechanism, etc.; the oven controller controls the heating tubes to heat so that the temperature of the oven inner cavity reaches the required temperature; the lifting drive mechanism drives the tray to move up and down to change the height of the tray.

[0047] The oven baking control method of this embodiment mainly includes the following steps, see Figure 1 as shown.

[0048] Step S1: Obtain the set height H1 of the tray and the set temperature T1 of the oven inner cavity.

[0049] The user selects the required recipe through the mobile phone APP and then sends it to the oven controller; or the user selects the required recipe through the operation panel of the oven and then sends it to the oven controller. The oven controller receives the recipe selected by the user and queries the preset database to obtain the set height H1 of the tray corresponding to the recipe and the set temperature T1 of the oven inner cavity. Since the user directly selects the recipe, the oven can automatically obtain the set height H1 of the tray and the set temperature T1 of the oven inner cavity, which is convenient to use.

[0050] As another preferred design, a knob or / and button is provided on the operation panel of the oven, which is used to receive the operation information applied thereto and send it to the oven controller. The oven controller obtains the set height H1 of the tray and the set temperature T1 of the oven inner cavity according to the received operation information. That is, the user directly sets the set height H1 of the tray and the set temperature T1 of the oven inner cavity through the knob or / and button, which is simple, direct and convenient to operate.

[0051] For a multi-layer oven, the number of layers of the oven corresponds to the height of the tray. For example, for the first layer of the oven, the corresponding tray height is 100 mm; for the second layer of the oven, the corresponding tray height is 200 mm; for the third layer of the oven, the corresponding tray height is 300 mm. The set number of layers of the oven corresponds to the set height H1 of the tray. When the user selects the number of layers, the tray height is also selected.

[0052] Step S2: Control the tray to rise to the set height H1; control the heating tubes to work so that the temperature of the oven inner cavity reaches the set temperature T1.

[0053] The oven controller sends a control signal to the lifting drive mechanism, and drives the tray to rise to the set height H1 through the lifting drive mechanism. In this embodiment, the lifting drive mechanism includes a drive motor and a telescopic tray bracket. The oven controller controls the drive motor to rotate, and the drive motor drives the tray bracket to expand and contract, and the tray bracket drives the tray to lift.

[0054] The oven controller controls the heating tube to work so that the temperature of the oven inner cavity reaches the set temperature T1. A temperature sensor is also installed on the oven inner cavity to detect the temperature of the oven inner cavity and send it to the oven controller. Finally, the temperature of the oven inner cavity reaches the set temperature T1. After the temperature of the oven inner cavity reaches the set temperature T1, the preheating is completed. Place the food on the tray and start baking.

[0055] During the baking process, every set time (such as 5 minutes), the following steps are executed:

[0056] Step S3: Obtain the actual temperature T2 of the tray.

[0057] A temperature sensor is installed on the tray. By using the temperature sensor set on the tray to obtain the actual temperature T2 of the tray, it is simple and convenient, and a relatively accurate temperature can be obtained. The actual temperature T2 of the tray represents the temperature around the food. By monitoring the actual temperature T2 of the tray in real time, the purpose of precisely controlling the temperature around the food is achieved.

[0058] Step S4: Calculate the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1.

[0059] Step S5: Determine whether the absolute value of △T is greater than the set threshold.

[0060] In this embodiment, the set threshold = K * T1, where 0 < K < 1. That is, the set threshold is positively correlated with the set temperature T1 of the oven inner cavity. The larger the set temperature T1 of the oven inner cavity, the larger the set threshold. Thus, the set threshold is reasonably selected, and then the absolute value of △T is reasonably judged, which is convenient for subsequently adjusting the height of the tray reasonably.

[0061] If not, it means that the absolute value of △T is small and the tray height is appropriate, then execute Step S6: Maintain the current height of the tray.

[0062] If so, it means that the absolute value of △T is large and the tray height is inappropriate and needs to be adjusted, then execute Step S7.

[0063] Step S7: Determine whether the actual temperature T2 is greater than the set temperature T1.

[0064] If so, it means that the actual temperature T2 of the tray is high, then execute Step S8: Change the height of the tray to make the tray away from the heating tube to avoid overcooking the food on the tray.

[0065] If not, it means that the actual temperature T2 of the tray is low, then execute Step S9: Change the height of the tray to make the tray close to the heating tube to avoid undercooking the food on the tray.

[0066] The oven control method of this embodiment obtains the actual temperature T2 of the tray at every set time; calculates the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, changes the height of the tray to make it away from the heating tube to prevent the food from being burnt by high temperature; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, changes the height of the tray to make it close to the heating tube to avoid the food from being undercooked; therefore, the oven baking control method of this embodiment improves the baking effect of the food and prevents the food from being undercooked on the inside and burnt on the outside through the automatic adjustment of the tray height; realizes intelligent baking by monitoring the temperature around the baked food (i.e., the actual temperature T2 of the tray).

[0067] The baking control method of this embodiment solves the trouble of manually selecting the baking layer (i.e., the set height of the tray) when the user bakes food, or the adverse effect on the baking effect of the food when the layer selection is incorrect; solves the problems of poor baking effect, undercooked on the inside and burnt on the outside caused by the temperature fluctuation of the oven and the poor temperature uniformity inside the oven through temperature tracking.

[0068] The heating tube may be located in the upper part of the oven inner cavity, may also be located in the lower part of the oven inner cavity, or may be located in both the upper and lower parts of the oven inner cavity. When the position of the heating tube is different, the moving direction of the tray is different when the tray approaches or moves away from the heating tube.

[0069] I. As a preferred design scheme of this embodiment, the heating tube is located in the upper part of the oven inner cavity:

[0070] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, it indicates that the actual temperature T2 of the tray is relatively high, so the height of the tray is reduced to make the tray away from the heating tube; to avoid the food on the tray from being burnt by high temperature.

[0071] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, it indicates that the actual temperature T2 of the tray is relatively low, so the height of the tray is increased to make the tray close to the heating tube; to avoid the food on the tray from being undercooked.

[0072] II. As another preferred design scheme of this embodiment, the heating tube is located in the lower part of the oven inner cavity:

[0073] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, it indicates that the actual temperature T2 of the tray is relatively high, so the height of the tray is increased to make the tray away from the heating tube; to avoid the food on the tray from being burnt by high temperature.

[0074] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, it indicates that the actual temperature T2 of the tray is relatively low. Then, lower the height of the tray to make the tray closer to the heating tube; avoid the food on the tray from being undercooked.

[0075] Thirdly, as another preferred design solution of this embodiment, heating tubes are respectively arranged at the upper and lower parts of the inner cavity of the oven:

[0076] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, it indicates that the actual temperature T2 of the tray is relatively high. Then, lower or raise the height of the tray to make the tray closer to the central position between the heating tube at the upper part and the heating tube at the lower part of the inner cavity of the oven, so that the tray is far away from the heating tubes at the upper and lower parts of the inner cavity of the oven; avoid the food on the tray from being burnt due to high temperature.

[0077] When the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, it indicates that the actual temperature T2 of the tray is relatively low. Then, raise or lower the height of the tray to make the tray closer to the heating tube at the upper part or the heating tube at the lower part of the inner cavity of the oven; avoid the food on the tray from being undercooked.

[0078] In this embodiment, changing the height of the tray specifically includes: changing the height of the tray with a set height adjustment step △H. That is, the height of the tray changes by △H each time, that is, the tray rises or falls by △H each time, to avoid too large a change in the height of the tray and affect the baking effect. For example, △H = 50mm, and the tray rises or falls by 50mm each time.

[0079] Based on the design of the above oven baking control method, this embodiment also proposes an oven, which mainly includes an inner cavity of the oven, heating tubes, a tray, a lifting drive mechanism, a temperature acquisition unit, an oven controller, etc.

[0080] The inner cavity of the oven has an accommodation space.

[0081] The heating tubes are located in the accommodation space.

[0082] The tray is located in the accommodation space.

[0083] The lifting drive mechanism is used to drive the tray to move up and down to change the height of the tray; in this embodiment, the lifting drive mechanism includes a drive motor and a telescopic tray bracket. The oven controller controls the rotation of the drive motor, the drive motor drives the telescopic tray bracket to expand and contract, and the tray bracket drives the tray to lift and lower.

[0084] The temperature acquisition unit is used to acquire the actual temperature T2 of the tray; in this embodiment, the temperature acquisition unit is a temperature sensor.

[0085] An oven controller is used to obtain the set height H1 of the tray and the set temperature T1 of the oven inner cavity; control the tray to rise to the set height H1; control the heating tube to work so that the temperature of the oven inner cavity reaches the set temperature T1; and calculate the temperature difference △T = T2 - T1 between the actual temperature T2 of the tray and the set temperature T1 every set time; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, change the height of the tray to make the tray away from the heating tube; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, change the height of the tray to make the tray close to the heating tube.

[0086] The specific working process of the oven has been described in detail in the above baking control method of the oven, and will not be elaborated here.

[0087] The oven of this embodiment obtains the actual temperature T2 of the tray every set time; calculates the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, change the height of the tray to make it away from the heating tube to prevent the food from being overcooked; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, change the height of the tray to make it close to the heating tube to avoid the food from being undercooked; therefore, the baking control method of the oven of this embodiment improves the baking effect of the food and prevents the food from being undercooked on the inside and overcooked on the outside through the automatic adjustment of the tray height; by monitoring the temperature around the baked food (i.e., the actual temperature T2 of the tray), intelligent baking is achieved.

[0088] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oven baking control method, characterized in that, it includes: obtaining the set height H1 of the tray and the set temperature T1 of the oven inner cavity; controlling the tray to rise to the set height H1; controlling the heating tube to work so that the temperature of the oven inner cavity reaches the set temperature T1; every set time, execute the following steps: obtaining the actual temperature T2 of the tray; calculating the temperature difference △T = T2 - T1 between the actual temperature T2 and the set temperature T1; judging whether the absolute value of △T is greater than the set threshold; if so, judging whether the actual temperature T2 is greater than the set temperature T1; if so, changing the height of the tray to make it away from the heating tube; if not, changing the height of the tray to make it close to the heating tube.

2. The baking control method according to claim 1, characterized in that: the heating tube is located in the upper part of the oven inner cavity; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, then reduce the height of the tray to make it away from the heating tube; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, then increase the height of the tray to make it close to the heating tube.

3. The baking control method according to claim 1, characterized in that: the heating tube is located in the lower part of the oven inner cavity; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, then increase the height of the tray to make it away from the heating tube; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, then reduce the height of the tray to make it close to the heating tube.

4. The baking control method according to claim 1, characterized in that: the heating tubes are respectively arranged in the upper and lower parts of the oven inner cavity; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, then reduce or increase the height of the tray to make the tray close to the central position of the upper and lower heating tubes in the oven inner cavity so that the tray is away from the upper and lower heating tubes in the oven inner cavity; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, then increase or reduce the height of the tray to make the tray close to the upper or lower heating tube in the oven inner cavity.

5. The baking control method according to claim 1, characterized in that: changing the height of the tray specifically includes: changing the height of the tray with a set height adjustment step.

6. The baking control method according to claim 1, characterized in that: the set threshold = K * T1, where 0 < K < 1.

7. The baking control method according to claim 1, characterized in that: obtaining the actual temperature T2 of the tray through a temperature sensor arranged on the tray.

8. The baking control method according to claim 1, characterized in that: obtaining the set height H1 of the tray and the set temperature T1 of the oven inner cavity; specifically includes: the oven controller receives the recipe selected by the user and queries the preset database to obtain the set height H1 of the tray corresponding to the recipe and the set temperature T1 of the oven inner cavity.

9. The baking control method according to claim 1, characterized in that: Obtain the set height H1 of the tray and the set temperature T1 of the oven inner cavity; specifically including: A knob and / or a button are provided on the operation panel of the oven, which is used to receive the operation information applied thereto and send it to the oven controller; the oven controller obtains the set height H1 of the tray and the set temperature T1 of the oven inner cavity according to the received operation information.

10. An oven Characterized in that It includes: An oven inner cavity, which has an accommodation space; A heating tube, which is located in the accommodation space; A tray, which is located in the accommodation space; A lifting drive mechanism, which is used to drive the tray to move up and down to change the height of the tray; A temperature acquisition unit, which is used to acquire the actual temperature T2 of the tray; An oven controller, which is used to obtain the set height H1 of the tray and the set temperature T1 of the oven inner cavity; control the tray to rise to the set height H1; control the heating tube to work so that the temperature of the oven inner cavity reaches the set temperature T1; and calculate the temperature difference △T = T2 - T1 between the actual temperature T2 of the tray and the set temperature T1 every set time; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is greater than the set temperature T1, change the height of the tray to make the tray away from the heating tube; when the absolute value of △T is greater than the set threshold and the actual temperature T2 is less than the set temperature T1, change the height of the tray to make the tray close to the heating tube.

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