OPERATION METHOD OF A GAS COOKING APPLIANCE
Patent Information
- Authority / Receiving Office
- TR · TR
- Patent Type
- Applications
- Current Assignee / Owner
- MAMUR TEKNOLOJI SISTEMLERI SANAYI ANONIM SIRKETI
- Filing Date
- 2026-01-23
- Publication Date
- 2026-06-22
Abstract
Description
1 TARIFF OPERATION METHOD OF A GAS COOKING APPLIANCE TECHNICAL AREA 5 The present invention is a cooking appliance, in particular a gas oven or gas stove equipped with a convection fan. in cooking chambers, an operating method relating to the operation of the fan and gas valve It is related. STATE OF THE ART Gas cooking appliances, especially gas ovens, operate primarily through a burner. The principle is that the heat supplied is transferred into the cooking volume and circulated by a fan when necessary. It withstands. Fuel is supplied to the burner via a gas valve. The gas-air mixture is 15 Ignition is achieved with a lighter; the continuity and safety of the combustion is ensured by a flame. It is monitored by a sensor. These components are driven by a controller, and the controller typically... It manages the firing cycle. In convection ovens, the temperature in the cooking volume. A convection fan is used to improve heat distribution and increase heat transfer. Although the presence of a convection fan provides an advantage in terms of cooking performance, gas combustion... In these systems, the flow field created by the fan is the flame root and mixing zone around the burner. It has a direct effect on the fan, especially in low load regimes with low throttle flow. The momentum generated by the flow can weaken the flame. This is called flame lifting from the burner ports. or instabilities such as the flame breaking off from the mixing zone (blow-off) occur 25 It is possible to achieve this. However, the fan is insufficient at high gas flow rates and high load regimes. Its operation increases temperature gradients in the cooking volume, and the combustion products This makes transportation more difficult and accelerates the formation of local hotspots. In common practice, the fan is kept off until ignition and flame confirmation are received. Flame 30 Once verified, the fan operates at a single constant speed or in a predetermined limited number of stages. It is operated in one of them. When flame loss is detected, the gas is shut off; the fan is stopped or set to the lowest level. It is put into a stage; purge and re-fire tests are performed. This approach The advantage is its structural simplicity and low calibration requirement. However, the fan speed can be adjusted using gas. Not related to flow rate, excessive blowing at low gas flow rate, flame 35 risk of weakening / extinguishing, and at high gas flow rates, risk of insufficient circulation. It increases. 2 JPS6069421 allows the burner to be reignited even if the flame is blown out. In order to make this possible and ensure safety, the burner is temporarily switched off when the load is reduced. A method based on driving the ignition circuit is described. In this context, the load The output from an operational amplifier that senses its magnitude is then passed through a differential circuit 5 and is applied to the reset terminal of a timer circuit via a comparator. The load In the temporary state where the timer decreases, the low-level output generated by the comparator is triggered by the timer. The circuit is reset and the timer circuit produces a low-level output for a specific period of time. The ignition circuit is activated. Thus, although the amount of combustion by the burner is reduced... The excess 10 is caused by the delay in the decrease in the combustion fan's rotational speed due to inertia. Even if the flame is blown out under air pressure, the burner can be reignited, ensuring safety. is provided. A BRIEF DESCRIPTION OF THE INVENTION The purpose of the invention is to stabilize and ramp the fan with a controller in a gas cooking appliance. By coordinating essential speed control, it prevents sudden changes in airflow from extinguishing the flame. The goal is to prevent fires while maintaining safe ignition and stable combustion. To achieve the aforementioned purposes, the invention includes a burner and at least one gas supplying fuel to the burner. a valve, a lighter to ignite the burner, a flame sensor that monitors the burner flame, cooking a fan and a gas valve to provide air circulation within the volume, and a controller to control the fan. This relates to the operating method of a gas cooking appliance containing a controller. The method involves the controller. To be executed by, receiving a start command signal, opening the gas valve. and ignition by switching on the lighter, the flame sensor signal is 25 assessment and verification of the presence of flame and determination of flame approval, flame approval Upon this, the fan is switched off or off for a predetermined stabilization period. Maintaining at a minimum speed, after the stabilization period, the throttle flow or gas Determining a target fan speed value based on the valve's opening state and the fan the speed of the fan speed to the target fan speed value, the rate of change in fan speed is predetermined at 30 the process of raising the ramp in stages, limited by a maximum rate of change. It includes these steps. This suppresses sudden pressure changes in the cooking volume and reduces the flame. by reducing shear stresses that lead to extinguishing and by the user in the cooking appliance Potential thermal fluctuations are reduced. 35 In a preferred application, the fan is used during stepped ramping and during steady operation. Flame weakening is checked, and if any signs of flame weakening are detected, the fan speed is reduced. 3 The fan speed is reduced for a predetermined waiting period, and Subsequently, the fan speed is gradually increased back towards the target fan speed to prevent anti-quench. The process is applied. This temporarily reduces the excessive air entrainment that weakens the flame. Time is given for the flame to regain strength, and cooking continues by turning off the gas. It is protected without application. 5 In a preferred application, the fan speed is reduced to 5 seconds as part of the anti-quench process. The flame sensor is activated within 20 seconds, preferably with a delay of around 10 seconds. A thermochemical recovery period consistent with the notification is provided, avoiding unnecessary repetition. The number of trials is reduced and total energy consumption decreases. 10 In a preferred application, the fan speed during anti-quench should be at the minimum safe fan threshold. It should not be reduced below this level, and the minimum safe fan threshold is 10% to 20% of the maximum fan speed. It has been selected within this range. In this way, the transport of residual gases and temperature within the enclosure are ensured. This ensures homogenization of the distribution and reduces the risk of overheating and local hotspots. is being reduced. In a preferred application, the fan speed within the anti-quench scope is 5% of the current fan speed. by up to 20%, and preferably around 10%. This way, the excess that could extinguish the flame is reduced. While air momentum is reduced, the ventilation function is preserved and a steady state is reached quickly. A response is provided. In a preferred application, a flame attenuation signal is briefly present in the flame sensor signal. interruptions and / or a rapid decrease in flame intensity within a predetermined time window It is produced based on detection. Thus, 25 before flame extinction occurs. By detecting the warning early, the delay in intervention is shortened. In a preferred application, after the fan reaches the target fan speed, the gas flow or gas The target fan speed is updated depending on the valve opening status, ensuring stable fan operation. It is operated in this way. In this way, the air flow is simultaneously adjusted to counteract changes in fuel flow rate. The settings are adjusted, and combustion stability and heating performance are maintained throughout operation. In a preferred application, the target fan speed is updated during stable operation. A predetermined hysteresis is applied and / or a small difference is made in the target fan speed. The variations are ignored. In this way, unwanted back-and-forth oscillations of the fan speed 35 by preventing the formation of flames and the periodic aerodynamic stresses they create on the flame. Noise is being reduced. 4 In a preferred practice, if flame confirmation cannot be obtained, the gas valve is closed to shut off the gas supply. The process is carried out and the ignition step is attempted again. In this case, unburned gas accumulates. is being prevented, initial conditions for safe re-ignition are being reset, and incorrect The risk is reduced in ignition situations. 5 In a preferred application, flame confirmation occurs when the flame sensor signal lasts for at least 0.6 to 0.8 seconds. It is given subject to the condition that it continuously demonstrates the presence of flame. In this way Temporary flame flares are distinguished from continuous combustion. This reduces the possibility of false confirmation. Security is increasing. 10 In a preferred application, interference in the flame sensor signal during ignition. A blanking time of 0.1 to 0.15 seconds is applied to suppress the flame. This way, the lighter... Electromagnetic ionization interference from the source is filtered out, making sensor readings reliable. This prevents the controller from making a wrong decision. 15 In a preferred application, the stabilization time is between 5 and 15 seconds, and preferably around... s has been chosen. In this way, sufficient time is given for the flame to settle on the burner geometry. This ensures that when the fan is activated, the risk of flame ignition is completely eliminated. It has been observed. 20 In a preferred application, the target fan speed depends on the gas flow or gas valve opening condition. This is determined via a matching function defined accordingly. Thus, the controller, It provides a repeatable air-fuel mixture throughout the burner's operating range, It improves calibration accuracy. 25 In a preferred implementation, the mapping function is stored as a table in the controller's memory. The data is stored and intermediate values are calculated via interpolation. The computational load is low. By maintaining this, transitions to the target fan speed are smoothed and controlled through detailed calculations. The delay is being reduced. 30 In a preferred application, the maximum rate of change in fan speed is at most ±2% to ±10% / 0.5 s. The range is selected, preferably with a maximum of ±5% / 0.5 s. Flow acceleration within this range. By restricting the flame, the aerodynamic stress on the flame is reduced. Thus, it approaches the extinction threshold. Crossings are being made safer. 35 In a preferred application, the target fan speed is a minimum fan limit and / or a maximum fan speed. It is limited by its boundary. In this way, both heat accumulation due to inadequate ventilation is prevented. Also, the risk of fire extinguishing due to excessive ventilation has been reduced. In a preferred application, the open / closed status of the lid is considered within the scope of disruptive effect detection. It is detected by a switch, and the target fan speed is temporarily reduced when the cover is opened. and / or a stepped ramp is suspended. Sudden flow regime created by gate movement. The flame is prevented from breaking during the changeover, and user-induced malfunctions are tolerated. It has been made possible. In a preferred application, the flame sensor signal is used as part of flame continuity monitoring. if it shows no flame for longer than a predetermined safety window As a precaution against flame loss, the gas valve is closed and ignition is attempted again. This provides a rapid safety response to actual flame extinction, preventing gas accumulation. is prevented. 15 In a preferred application, from a predetermined number of failed firing attempts Then the controller activates the safe lockout mode. This allows the faulty component to be identified or locked out. Repeated trials are limited due to gas supply issues or abnormal environmental conditions. In a preferred application, an enclosure, a cover associated with the enclosure, at least inside the enclosure a burner, a gas valve for the burner, a lighter, a flame sensor, a fan, and functional components. The cooking appliance, which includes a connected controller, will be operated according to the steps above. It is operated in this type of cooking device while increasing flame stability and combustion safety. and cooking performance is improved. 25 BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows the operation of a representative application of a gas cooking appliance, which is the subject of the invention. This is a block diagram relating to the method. 30 Figure 2 shows the controller interaction and basic elements of a gas cooking appliance, which is the subject of the invention. This is a representative schematic representation. DETAILED DESCRIPTION OF THE INVENTION 35 In this detailed description, the subject matter of the invention may be developed without any restrictions and The explanation is given with references to examples simply to better illustrate the topic. 6 Figure 1 shows the block diagram, and Figure 2 shows an example of a container (3) inside a housing. A gas oven with a burner (5) is shown. The burner (5) is supplied with natural gas via a gas valve (4). It is supplied with gas and / or LPG. Spark electrode or hot for ignition near the burner (5). It includes a lighter (6) as a surface igniter and a flame sensor (7) for flame monitoring. 5 The enclosure (3) is closed with a hinged lid (2). The open / closed position of the lid (2) is a It can be detected by the switch (8). To ensure air circulation in the cooking volume. At least one fan (1) is located inside the muffle, which is limited by the housing (3). Functional The components are controlled by a controller (10) with an electrical signal connection. The controller (10) sends a signal to a driver to open the gas valve (4) and 10 It can be switched off and / or controlled by modulation. Again by the controller (10) It is possible to operate the lighter (6) in ignition cycles. Also, from the flame sensor (7) Feedback regarding the presence of flame is transmitted to the controller (10), and the speed of the fan (1) is controlled by a drive. adjusting via inputs such as the cover switch (8) within the scope of disturbing effect detection (113). monitoring, flame weakening control (114) and flame continuity control (122) of flame 15 can evaluate the signal and anti-quench (116), flame loss prevention (124) and safe It operates the locking (126) functions. The controller (10) is located on an electronic circuit board. The controller (10) The primary signals processed are flame sensor feedback (flame present / absent and preferably flame intensity). (a related magnitude), gas valve (4) opening ratio, PWM function, step information or a flow rate 20 Gas flow / valve status, cover (2) open information, draft change, measured by the flow rate from the sensor, Indicators of disruptive effects such as shock (113), and from user or higher level control It is the initialization command from the layer (102). The basic commands generated by the controller (10) are gas valve control and gas when necessary. Fan speed command including cutoff command (109), stepped ramp (112) and anti-quench (116), 25 Secure locking and an error signal with a display (not shown) or audible sound. The indicator (126) is production. Within the scope of the invention, the term 'fan speed' means the speed, PWM / voltage ratio, step or of the fan (1). It refers to any equivalent control applied to a fan driver. The method shown in Figure 1 is performed by the controller (10) with a state machine logic 30 It is being implemented. Each block is described below with its corresponding reference number. The method involves the user selecting a cooking program, entering a temperature set value, or... It starts with the issuance of the start command. When the controller (10) receives this command (102) It switches to the ignition cycle (104). At this stage, for safety reasons, the fan (1) is preferably switched on. It is kept closed; this prevents the flame from being extinguished by a possible air pulse during ignition. 35 is prevented. In the ignition step (104) the controller (10) opens the gas valve (4) and the lighter (6) 7 It operates. Ignition involves spark generation, heating of the hot surface igniter, or This can be achieved with an equivalent ignition mechanism. Optionally, ignition A brief pre-venting (purge) can be applied before or during ignition. However To maintain flame stability in the preferred application of the invention given in the Figures, the fan (1) It is low or off at the moment of ignition. 5 Within the scope of flame verification (106), the presence of a flame is assessed by evaluating the flame sensor (7) signal. It is detected. As part of the flame confirmation control (108), flame detection is carried out to prevent false detections. its existence uninterrupted or specific throughout a predetermined confirmation window It is requested that the process continue in a way that satisfies the verification criteria. For example, the flame signal. It must show a continuous 'flame present' for at least 0.6-0.8 seconds, or the ionization current must be within a certain range of 10 seconds. Criteria such as staying above the threshold can be applied. Optionally, ignition can be activated. A blanking period of 0.1-0.15 seconds is required to suppress electromagnetic interference caused by sparks. available. If flame approval (108) cannot be provided within the specified time, the controller (10) will gas for safety reasons. He performs the gas shut-off procedure (109) by closing the valve (4). Following this, 15 of the unburned gas A short purge can be applied to remove it and the ignition (104) can be restarted. It can be tried. The number of retry attempts can be limited to a maximum number until a flame is not formed. In fault scenarios, the safety lockout (126) is triggered. When flame confirmation (108) is provided, the controller (10) proceeds to the stabilization step (110). The fan (1) is switched off during the stabilization period of approximately 10 seconds; preferably between 5-15 seconds. It is kept at a level that is either controlled or too low to affect the flame. This period, the flame the core is located on the burner (5) and the flow / heat balance of the fuel-air mixture It is critical for proper seating. Premature fan activation can cause lifting / blow-off problems. This reduces the flame. Flame is monitored throughout the stabilization process, and if flame loss occurs, flame loss control measures are taken. (124) is being put into operation. 25 After stabilization (110), the controller (10) sets a target fan speed depending on the gas flow and The fan (1) is gradually increased towards this target (112). The target fan speed is the gas flow or a mapping (feedforward table) which is a function of the gas valve (4) opening condition It can be calculated via the controller (10) memory with the gas flow rate and target fan speed. The mapping table is stored and intermediate values are determined by interpolation. 30-level scale. On the ramp, the fan speed does not suddenly jump to the target. The speed change is controlled by a speed limiter. It is restricted by a rate limit. For example, the fan command can be a maximum of ±5% in every 0.5 second control cycle. It is being modified. In this way, the air pulse effect is reduced, causing the flame to weaken and break off. is being prevented. Within the scope of disturbing effect detection (113), the controller (10) detects events such as the opening of the cover (2) by switching 35 (8) detects through lid opening, sudden cold air intake and draft change. 8 Because it can create a problem, the controller (10) temporarily reduces the target fan speed in this case, suspending the stepped ramp or with a more protective fan together with anti-quench (116) It can switch to its profile. Similarly; traction / draft change, shock or network For other disturbing effects such as voltage fluctuation, disturbing effect detection (113) The defined signal is generated. 5 Flame weakening control (114) is when the presence of a flame has not yet completely disappeared but is about to go out. It is aimed at the early detection of situations where a trend is starting. This control is done by the flame sensor (7) brief interruptions in the signal, rapid drop in ionization current, fluctuations in optical intensity. or criteria such as a decrease in the percentage of flames present within a predefined observation window It is based on. If a flame weakening sign is detected, anti-quench (116) is triggered, otherwise 10 In this case, stable operation (120) or ramp continues. Anti-quench step (116) is to extinguish the flame when the flame weakening sign is detected. It is a fast protection strategy that prevents the fan speed from increasing in the direction it will go. The controller (10) controls the fan speed. A 5%-20% reduction from the current value; typically 10%, immediately reverts to a lower level. and at this level 15 during a predetermined 10-second waiting period; between 5-20 seconds. It holds. Waiting allows the flame core to re-establish equilibrium. Then... The controller (10) gradually increases the fan speed again toward the target. Anti-quench During operation, the fan speed will not trigger other imbalances such as backflow / turbulence. A minimum safe percentage of 10-20% is maintained; typically, a fan threshold of around 15% is not allowed to drop below this level. In consecutive triggers, the waiting time is increased and / or the target fan speed is temporarily lowered to 20. It is taken to a low band. In steady-state operation (120) the fan (1) revolves around the target fan speed depending on the gas flow. It is operated. Target fan speed when gas valve (4) opening or gas flow rate changes. It is being updated. However, target changes for flame stability are still being made gradually. is implemented. At this stage, the controller (10) controls both the flame weakening (114) and 25 It maintains flame continuity control (122). Flame continuity control (122) checks whether the flame has completely disappeared according to safety criteria. It is the control that evaluates the flame sensor (7) signal from a certain safety window (e.g. If the flame is absent for longer than 0.5-1.5 seconds, flame loss is considered a risk and a flame loss precaution is taken. (124) is started. 30 As part of the flame loss prevention (124), the controller (10) cuts off the gas by closing the gas valve (4) and You can vent / purge to remove unburned gas. Then ignition (104) The cycle is restarted. Each re-ignition attempt requires flame confirmation (108) and stabilization. (110) It re-establishes safe starting conditions by including the steps. 9 Failure of a predetermined number of re-fire attempts (e.g., 1-5; typically 3). or under conditions such as repeated flame failures within a certain time interval, the controller (10) activates the safe locking mode (126). In this mode the gas valve (4) is kept closed and The user is presented with an error message; the user requests a reset to restart the system. and / or service intervention may be required. 5 In the application of the invention, different burner geometries, gas types and housing volumes are suitable. The parameters can be calibrated. The following values are examples and do not limit the scope of protection: Verification time for flame confirmation (108): there is at least 0.6-0.8 s of uninterrupted flame (optional 0.1-0.15 (s blanking). Stabilization (110) time: 5-15 s (typical 10 s), during this time the fan is off or very It is kept low. Rate-limit for fan speed ramp (112): maximum ±5% per 0.5 s cycle 10 (Alternative: ±2%-±10% / 0.5 s). Minimum safe fan threshold: 10%-20% (typically 15%). Anti-quench (116) Withdrawal amount: 5-20% (typical 10%) and waiting time: 5-20 s (typical 10 s). Again Number of ignition attempts: 1-5 (typically 3) and purge / venting time: 5-15 seconds. Gas flow to target fan speed is matched using reference points and interpolation determined during production. It can be created. The matching is 15 to prevent unnecessary oscillation of the fan during small gas fluctuations. It can be supported by dead band (hysteresis). If disruptive effect detection (113) is active, on matching. The target fan speed can be reduced by applying a temporary trim. The invention is not limited to ovens; it also includes grills and combination cookers with gas cooking chambers. It can be applied in similar devices. Fan (1) a convection fan, combustion air It could be a fan or an exhaust fan. Gas flow information can be measured directly with a flow sensor, or 20 The gas valve (4) can also be obtained by deriving from the control signal (PWM, step, opening). The criteria used for flame weakening control (114) can be adapted according to the sensor type. In addition controller (10), depending on ambient conditions (altitude, ambient temperature) or gas type, more than one It can store a map set. The invention provides fan control synchronized with gas flow, with a soft ramp and anti-quench protection. Because of this, it reduces the risk of flame extinction. It prevents unnecessary re-ignition and lockout. By reducing the number of cycles, it improves cooking consistency. In this way, it maintains high safety standards. It supports collaborative work. REFERENCE NUMBERS 30 1 Fan 108 Flame approval check 2 Cover 109 Gas cut-off 3 Housings 110 Stabilization 4 Valves, 112-Stage Ramp Burner 113 Disruptive effect detection 6 Lighters 114 Flame weakening control 7 Flame sensor 116 Anti-quench 8 Switches 120 Steady operation Controller 122 Flame continuity control 102 Start / Receive command 124 Flame loss prevention 104 Ignition 126 Safe locking 106 Flame verification
Claims
11 REQUESTS 1. A burner (5), at least one gas valve (4) supplying fuel to the burner (5), the burner (5) a lighter to ignite (6), a flame sensor to monitor the burner flame (7), cooking to provide air circulation in the volume with a fan (1) and gas valve (4) and fan (1) 5 operation of a gas cooking appliance containing a controller (10) The method and feature is that it is an initialization command to be executed by the controller (10). receiving the signal (102), opening the gas valve (4) and operating the lighter (6) Ignition is made by (104) by evaluating the flame sensor (7) signal. Verification of the presence of flame (106) and determination of flame approval (108), flame approval 10 Upon ensuring this, the fan (1) will operate for a predetermined period of stabilization. closed or kept at a minimum speed (110), gas after stabilization period a target fan speed depending on the flow or the opening status of the gas valve (4) determining the value and the speed of the fan (1) to the target fan speed value, fan The rate of change in its speed is 15, with a predetermined maximum rate of change. (112) steps of raising the ramp in stages so that it will be limited It includes.
2. A method of operation in accordance with claim 1, the feature of which is the fan (1) incremental ramp (112) 20 during and steady operation (120) flame attenuation control (114) and reduce the fan speed if a flame weakening sign is detected, beforehand waiting at a reduced fan speed for a specified waiting period and Subsequently, the fan speed is gradually adjusted back to the target fan speed value. (116) implementing an anti-quench operation by increasing the steps of the operation It includes. 25 3. A method of operation in accordance with claim 2, the feature of which is the anti-quench operation (116) This includes keeping the fan speed at a reduced level for 5 to 20 seconds, and This preferably involves waiting for about 10 seconds.
4. An operation method that conforms to claim 2 or 3 and is characterized by the anti-quench operation (116) This includes ensuring that the fan speed is not reduced below the minimum safe fan threshold during operation. and the minimum safe fan threshold in question is 10% to 20% of the maximum fan speed. It is within the range. 35 5. An operational method that complies with either of claims 3-4, and its characteristic is anti-quench. Within the scope of operation (116), the fan speed is increased by 5% to 20% compared to the current fan speed. This includes reducing the reduction, and preferably reducing it by around 10%. 12 6. A suitable operating method for any of the previous requests, characterized by its flame. short interruptions in the flame sensor (7) signal of weakening sign (114) and / or Detecting a rapid decrease in flame intensity within a predetermined time window. It is characterized by being produced based on... 5 7. A suitable operating method for any of the previous requirements, and its feature is that the fan (1) After the target fan speed value is reached, the gas flow or gas valve (4) is opened By updating the target fan speed value depending on the situation, the fan remains stable. The operation of the study includes (120) steps. 10 8. It is an operation method in accordance with claim 7 and its feature is that it is stable by the controller (10). Updating the target fan speed value during operation (120) beforehand by applying a defined hysteresis and / or a small difference in the target fan speed value Preventing fan speed oscillations by ignoring variations 15 It includes the process step.
9. A suitable operating method for any of the previous requests, characterized by its flame. If approval (108) cannot be obtained, the gas valve (4) will be closed and the gas will be shut off. Performing operation (109) and retrying firing step (104) operation 20 It includes the step.
10. A suitable operating method for any of the previous requests, characterized by its flame. confirmation (108) of the flame sensor (7) signal for at least 0.6 s to 0.8 s without interruption It is characterized by being issued conditionally upon the demonstration of the presence of a flame. 25 11. A surgical method suitable for any of the previous requests, and its characteristic is: To suppress interference in the flame sensor (7) signal during ignition (104) 0.1 The process involves applying a blanking time between 0.15 and 15 seconds.
12. A surgical method suitable for any of the previous requests, and its characteristic is: The stabilization time (110) should be selected between 5 s and 15 s, preferably around 10 s. It is characterized by its being.
13. A method of operation suitable for any of the previous requests, and its characteristic is target 35 the fan speed value depends on the gas flow or the gas valve (4) opening status It involves the process of determining the identity through a defined mapping function. 13 14. A method of operation that conforms to claim 13, and its characteristic feature is that the matching function is in the controller. (10) storing it as a table in memory and interpolating the intermediate values It includes the calculation process step.
15. A suitable operating method for any of the previous requests, and its feature is fan 5 The maximum rate of change in speed should be selected within a range of ±2% to ±10% / 0.5 s, and It is preferably characterized by having a maximum of ±5% / 0.5 s.
16. A method of operation suitable for any of the previous requests, whose characteristic is the target. fan speed value with a minimum fan limit and / or maximum fan limit of 10 It includes restrictions.
17. A method of operation suitable for any of the previous requests, characterized by its disruptive nature. Within the scope of impact detection (113), the open / closed status of the lid (2) is controlled by a switch (8). detection and the target fan speed value temporarily reaches 15 when the cover (2) is opened. This includes reducing and / or suspending the incremental ramp.
18. A suitable operating method for any of the previous requests, characterized by its flame. Within the scope of continuity control (122), the signal of the flame sensor (7) is predetermined. If a safety window shows no flame for a longer period than 20, the flame loss is 20. As a precaution (124), the gas valve (4) is closed and the ignition (104) is restarted. It involves testing.
19. A method of operation in accordance with claim 18, characterized by a predetermined number After a failed firing attempt, the controller (10) enters safe locking mode 25 (126) includes activation.
20. An enclosure (3), a lid (2) associated with the enclosure (3), at least the contents of the enclosure (3) a burner (5), a gas valve (4) for the burner (5), a lighter (6), a flame sensor (7), a including a fan (1) and a controller (10) functionally connected to it, and 30 from previous requests having a controller (10) operated according to an operating method suitable for any of them cooking appliance.