Temperature control method applied to air fryer with three heating bins
By using a fixed-cycle control of the on/off operation of the heating chambers and dynamic adjustment of the temperature control mode in a three-heating-chamber air fryer, the problems of low heating power utilization and small temperature control range when the three-heating-chamber air fryer is turned on at the same time are solved. This achieves higher heating power and a smaller temperature control range, and no hardware modification is required, saving costs.
Patent Information
- Application Number
- CN202512027112.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-27
AI Technical Summary
In existing technologies, when three heating chamber air fryers are turned on simultaneously, they suffer from low heating power utilization and small temperature control range, making it difficult to achieve both high heating power and small temperature control range at the same time.
The heating chamber is switched on and off using a fixed time period control, and the temperature control mode is dynamically adjusted based on the opening sequence of the heating chamber and the temperature detection results. This includes a heating up mode and a constant temperature mode. By setting initial values and shielding the heating function, the heating sequence of the heating chamber is ensured to be stable.
It achieves higher heating power utilization and smaller temperature control range, while maintaining temperature control stability, and requires no hardware modification, thus saving costs.
Smart Images
Figure CN121570053A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of air fryer technology, and specifically relates to a temperature control method for an air fryer with three heating chambers. Background Technology
[0002] Currently, there are very few consumer air fryers with more than two heating chambers. The main problem is the limitation of output power. Even if the power of all three heating chambers is reduced to meet the power limit, there will still be problems such as insufficient power leading to long heating time and small heating chamber capacity. When not all three chambers are fully open, the heating effect will be significantly worse than that of single-chamber and double-chamber air fryers of the same power.
[0003] Currently, the temperature control methods of air fryers with three heating chambers can be roughly divided into three types:
[0004] 1) such as Figure 1 The three heating chambers A, B, and C shown are completely independently temperature-controlled. The power required for all three chambers to be fully operational is less than a power limit. In this method, each heating chamber appears as an independent air fryer, without affecting the others. The advantage of this method is its simplicity and the fact that the heating on / off time is unlimited, allowing for very small temperature fluctuations. The disadvantages are that the low heating power of each chamber results in a longer heating time, and the small capacity of the heating chambers means that, when not all three chambers are fully operational, the heating effect will be significantly worse than that of a single-chamber or dual-chamber air fryer of the same power.
[0005] 2) such as Figure 2 The diagram shows two heating chambers, A and B, heating alternately, while another heating chamber, C, has its temperature independently controlled. The requirement is that the sum of the heating power of either A or B and the heating power of C cannot exceed a power limit. This method is commonly used when there are two small chambers, A and B, and one large chamber, C. This method ensures that the large chamber C receives sufficient power, and because the allowable heating time for all three chambers is fixed, the temperature range can be very small. However, the disadvantage is that the average power of the two smaller chambers, A and B, is only half, and the heating time is relatively long.
[0006] 3) such as Figure 3 The three heating chambers A, B, and C shown are heated in rotation by any two, with the sum of the heating power of any two chambers not exceeding the power limit. This method ensures that each chamber receives as much power as possible, with an average power of two-thirds of the power when fully open. The advantage of this method is that it minimizes the average time for each heating chamber to reach the target temperature from a cold state. However, the disadvantage is that because the heating time needs to be fully utilized, the allowable heating time for the three chambers is not fixed. When one heating chamber reaches the target temperature or its heating time expires, it immediately switches to another heating chamber that needs heating, making it impossible to achieve a very small temperature range.
[0007] In view of the above situation, the prior art has the following main defects: due to the power limitation, if the temperature control range is small, the average heating power is low, and the heating time is long; if the power is fully utilized, the heating time is difficult to estimate, and the temperature control range is large. SUMMARY
[0008] The purpose of the present application is to provide a temperature control method for an air fryer with three heating compartments, and the technical problem to be solved by the present application is that when the three heating compartments are simultaneously turned on, the utilization rate of heating power is high and the temperature control range is small.
[0009] To solve the above technical problems, the present application provides a temperature control method for an air fryer with three heating compartments, comprising:
[0010] By setting a fixed time period T as the temperature control period of each heating compartment, and in a temperature control period, each heating compartment can only perform one heating operation and one heating operation;
[0011] By setting all heating compartments in the initial state to be in the closed state, and sequentially turning on the three heating compartments, assigning a ranking number to each opened heating compartment, and setting the initial value of the temperature control period according to the opening order;
[0012] When the number of opened heating compartments reaches three, the shielding heating function is turned on, and when the temperature control period of all heating compartments exceeds two-thirds of the period T, the heating output of all heating compartments is forced to be turned off;
[0013] At the beginning of each period, according to the comparison result of the detected temperature in the compartment and the cold state temperature threshold, it is determined whether the heating compartment enters the temperature rising mode or the constant temperature mode in the current period, and the heating output state of the heating compartment in the current period is controlled based on the determined mode.
[0014] Preferably, the three heating compartments are sequentially opened, and each opened heating compartment is assigned a ranking number, and the initial value of the temperature control period is set according to the opening order, and the steps specifically include:
[0015] When the first heating compartment is turned on, it is ranked as No. 1 heating compartment, and the initial value of its temperature control period is set to T0;
[0016] When the second heating compartment is turned on, it is ranked as No. 2 heating compartment, and the initial value of its temperature control period is set to Where "%" is the modulo operation;
[0017] When the third heating compartment is turned on, it is ranked as No. 3 heating compartment, and the initial value of its temperature control period is set to And at the same time, the shielding heating function is activated.
[0018] Preferably, the cold temperature threshold is set to be 30℃ less than the target temperature.
[0019] Preferably, the comparison between the detected temperature and the cold temperature threshold is used to determine whether the heating chamber enters the heating-up mode or the constant temperature mode in the current cycle, and the steps specifically include:
[0020] When the detected temperature is lower than the cold temperature threshold, the current cycle enters the heating-up mode.
[0021] When the detected temperature is greater than or equal to the cold temperature threshold, the current cycle enters the constant temperature mode.
[0022] Preferably, when in the heating-up mode, the temperature in the chamber is detected in real time by the heating chamber, and as long as the temperature in the chamber is lower than the sum of the cold temperature threshold and 10℃, the heating output is kept in the on state.
[0023] Preferably, when in the constant temperature mode, the heating chamber adjusts the heating output on time of the current cycle at the beginning of each cycle according to the comparison between the average temperature change difference ΔTreal of the previous two cycles and the expected temperature change value ΔTtarget of the last cycle, that is:
[0024] When ΔT real <(ΔT target -allowed deviation), the heating output on time of the current cycle is increased;
[0025] When ΔT real >(ΔT target +allowed deviation), the heating output on time of the current cycle is decreased.
[0026] Preferably, when any heating chamber is turned off, the following steps are performed:
[0027] The shield heating function is turned off;
[0028] All heating chambers that are still in the on state are reordered to maintain the stability of the heating timing.
[0029] Preferably, the reordering specifically includes the following steps:
[0030] When the number of heating chambers in the on state is two, the phase difference between the two heating chambers is calculated, the heating chamber with the phase advanced by T / 3 cycles is reordered as the No. 1 heating chamber, and the other is reordered as the No. 2 heating chamber.
[0031] When the number of heating chambers in the on state is one, the heating chamber is reordered as the No. 1 heating chamber.
[0032] Compared with the prior art, the present application has the following advantages:
[0033] The present application fixes the heating switch period, and dynamically adjusts the temperature control period phase of each heating bin according to the opening number of the heating bin, i.e. the heating switch time phase between the heating bins, so as to achieve the effect of higher average heating power, stable temperature control and smaller temperature control amplitude; moreover, the hardware part is consistent with the prior art without any modification, and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS
[0034] Figure 1 is a schematic diagram of completely independent temperature control of three heating bins A, B and C provided by the prior art.
[0035] Figure 2 is a schematic diagram of alternating heating of two heating bins A and B and independent temperature control of another heating bin C provided by the prior art.
[0036] Figure 3 is a schematic diagram of rotating heating of any two of three heating bins A, B and C provided by the prior art.
[0037] Figure 4 is a schematic diagram of heating timing of opening of only one heating bin provided by the present application.
[0038] Figure 5 is a schematic diagram of heating timing of opening of two heating bins provided by the present application.
[0039] Figure 6 is a schematic diagram of heating timing of opening of three heating bins provided by the present application.
[0040] Figure 7 is a logic flow chart of processing of initial values of periods of the bins when the three heating bins are opened in sequence provided by the present application.
[0041] Figure 8 is a logic flow chart of processing of initial values of periods of the bins when the three heating bins are closed in sequence provided by the present application.
[0042] Figure 9 is a logic flow chart of processing of the temperature control mode of a single heating bin provided by the present application.
[0043] Figure 10 is a logic flow chart of processing of the temperature control mode of a single heating bin provided by the present application.
[0044] Figure 11 is a logic flow chart of processing of the temperature control mode of a single heating bin provided by the present application. DETAILED DESCRIPTION
[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0046] like Figures 4-11 As shown, this embodiment of the invention specifically provides a temperature control method for an air fryer with three heating chambers, which specifically includes:
[0047] (1) First, a fixed cycle time T is set as the temperature control cycle for each heating chamber. Within one temperature control cycle, the heating chamber can only perform one heating start-up and one heating stop-down operation.
[0048] (2) Initially, all heating chambers are in the off state. Then, three heating chambers are turned on sequentially. When turning on the first heating chamber, it is assigned number 1, and its initial temperature control cycle is set to T0 = 0. When turning on the second heating chamber, it is assigned number 2, and its initial temperature control cycle is set to... When activating the third heating chamber, assign it the number 3 in the sequence and set the initial value of its temperature control cycle to [value missing]. And activate the shielded heating function.
[0049] (3) When the shielded heating function is turned on, the heating output will be forcibly turned off when the temperature control cycle count of all heating chambers is greater than two-thirds of the cycle.
[0050] (4) After the heating chamber is turned on, at the beginning of each cycle, different temperature control modes are entered according to the detected temperature inside the chamber. When the temperature inside the chamber is less than the cold temperature threshold (target temperature control temperature -30℃), the cycle enters the heating mode; when the temperature inside the chamber is greater than or equal to the cold temperature threshold (target temperature control temperature -30℃), the cycle enters the constant temperature mode.
[0051] (5) The heating chamber in heating mode monitors the temperature inside the chamber in real time. As long as the temperature is lower than (cold temperature threshold + 10℃), the heating output will remain on.
[0052] (6) In the constant temperature mode, at the beginning of the cycle, the heating output start time for this cycle is adjusted based on the average temperature change difference ΔTreal of the previous two cycles and the expected temperature change value ΔTtarget of the previous cycle. real <(ΔT) target When the allowable deviation is reached, increase the heating output start-up time;
[0053] When ΔT real >(ΔT) targetWhen the heating output is turned on, the heating output is turned off after the preset time (or the preset time plus the allowable deviation) elapses.
[0054] (7) When the heating chamber is turned off during the period, the heating function is turned off. To ensure the stability of the heating timing when the heating chamber is turned on again, all the opened heating chambers need to be reordered. When the number of opened heating chambers is two, the phase difference of the two heating chambers is calculated. The heating chamber with a phase ahead of one-third of the cycle is reordered as No. 1 heating chamber, and the other is reordered as No. 2 heating chamber. When the number of opened heating chambers is one, the opened heating chamber is reordered as No. 1 heating chamber.
[0055] The above description is only a description of the preferred embodiments of the present application, and is not any limitation on the scope of the present application. Any modification or change made by a person of ordinary skill in the art according to the above disclosure is within the protection scope of the claims.
Claims
1. A temperature control method for an air fryer with three heating chambers, characterized in that, include: A fixed time period T is set as the temperature control period for each heating chamber, and within one temperature control period, each heating chamber can only perform one heating start operation and one heating stop operation. The initial state is set so that all heating chambers are in the off state, and three heating chambers are turned on in sequence. Each turned heating chamber is assigned a sequence number, and the initial value of its temperature control cycle is set according to its opening order. When three heating chambers are activated, the heating shielding function is activated. When the temperature control cycle count of all heating chambers exceeds two-thirds of its cycle T, the heating output of all heating chambers is forcibly shut down. At the beginning of each cycle, the heating chamber is compared with the cold temperature threshold to determine whether it enters heating mode or constant temperature mode in the current cycle, and the heating output status of the heating chamber is controlled based on the determined mode.
2. The temperature control method for an air fryer with three heating chambers as described in claim 1, characterized in that, The steps of sequentially activating the three heating chambers, assigning a sequence number to each activated chamber, and setting the initial value of its temperature control cycle according to its activation order include: When the first heating chamber is turned on, it is assigned the number 1 heating chamber and its initial temperature control cycle value is set to T0. When the second heating chamber is activated, it is designated as heating chamber number 2, and its initial temperature control cycle value is set to... When the third heating chamber is activated, it is designated as heating chamber number 3, and its initial temperature control cycle value is set to... And at the same time, the shielding heating function is activated.
3. The temperature control method for an air fryer with three heating chambers as described in claim 1, characterized in that, The cold temperature threshold is set to be 30°C less than the target temperature control temperature.
4. The temperature control method for an air fryer with three heating chambers as described in claim 3, characterized in that, The step of determining whether the heating chamber enters heating mode or constant temperature mode in the current cycle based on the comparison result of the detected internal temperature and the cold temperature threshold includes the following steps: When the detected temperature inside the chamber is lower than the cold temperature threshold, the current cycle enters the heating mode. When the detected temperature inside the chamber is greater than or equal to the cold temperature threshold, the current cycle enters constant temperature mode.
5. The temperature control method for an air fryer with three heating chambers as described in claim 3, characterized in that, When in heating mode, the temperature inside the heating chamber is monitored in real time. As long as the temperature inside the chamber is lower than the sum of the cold temperature threshold and 10°C, the heating output will remain on.
6. The temperature control method for an air fryer with three heating chambers as described in claim 1, characterized in that, When in constant temperature mode, at the beginning of each cycle, the heating chamber adjusts the heating output start time of the current cycle based on a comparison between the average temperature change difference ΔTreal of the previous two cycles and the expected temperature change value ΔTtarget of the previous cycle. When ΔT real <(ΔT) target When the allowable deviation is reached, the heating output start time of the current cycle is increased; When ΔT real >(ΔT) target If the allowable deviation is exceeded, the heating output start time for the current cycle will be reduced.
7. The temperature control method for an air fryer with three heating chambers as described in claim 1, characterized in that, When shutting down any heating chamber, perform the following steps: Turn off the shielded heating function; All currently active heating chambers are reordered to maintain a stable heating sequence.
8. The temperature control method for an air fryer with three heating chambers as described in claim 7, characterized in that, The reordering process specifically includes the following steps: When two heating chambers are activated, the phase difference between the two heating chambers is calculated, and the heating chamber with a phase advance of T / 3 cycles is reordered as heating chamber 1, and the other is reordered as heating chamber 2. When only one heating chamber is activated, that heating chamber is designated as heating chamber number 1.