External fan integrated stove system and control method thereof

Abstract

The present invention relates to an integrated stove system with an external fan and a control method thereof, wherein the body comprises a cabinet and a head, the head being located at the top rear side of the cabinet, the head having a smoke inlet duct and an air inlet connected to the smoke inlet duct; the fan system being arranged outside the body; a smoke exhaust duct being arranged in the cabinet, the upper part of which is connected to the smoke inlet duct, and the lower part of which is connected to the fan system; a guide plate assembly being further arranged in the smoke exhaust duct, the guide plate assembly comprising at least one guide plate, the guide plate dividing the internal space of the smoke exhaust duct into at least two guide ducts arranged side by side. The integrated stove system can effectively reduce the smoke exhaust resistance in the smoke exhaust duct and improve the smoke exhaust efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an integrated stove system with an external fan and a control method thereof. Background Art

[0002] An integrated stove is a kitchen appliance that integrates multiple functions such as a range hood, gas stove, disinfection cabinet, storage cabinet, etc. It has the advantages of saving space, good fume extraction effect, energy saving, low consumption and environmental protection.

[0003] For example, the Chinese invention patent with application number CN201821555806.7 (authorization announcement number: CN209026908U) discloses an integrated stove, including a stove body, a fume suction device and a cabinet body, the fume suction device includes an oil fume inlet device arranged at the rear of the stove body and a fan system arranged in the cabinet body, the fan system includes a fan, the fan includes an impeller and a volute, an air outlet is formed on the volute, and an exhaust port is opened on the side of the cabinet body, and the air outlet faces the exhaust port. In this patent, the fan system is arranged in the cabinet body, and the space in the integrated stove body is difficult to be fully utilized, and the fan is generally arranged behind the steamer or oven or dishwasher or disinfection cabinet liner, which is inconvenient to maintain. On the other hand, the fan system is arranged inside the integrated stove, and it is very difficult to disassemble and assemble when the fan needs to be cleaned; a steamer or oven is usually arranged under the integrated stove, and the existence of the fan system will occupy the space of the steamer and the oven, making the depth of the steamer and the oven very shallow, affecting the use.

[0004] To this end, the Chinese invention patent application with application number CN202210094449.3 (application publication number: CN114370660A) discloses an integrated stove, which includes: a body; a head, which is arranged on the body, and the head includes: a head body and a fan assembly. Specifically, the fan system (fan assembly) is arranged in the air duct in the head, which saves more installation space for installing a disinfection cabinet, a steamer and other box structures in the cabinet, so that the space in the cabinet can be fully utilized. However, the fan in the patent application is arranged on the inside of the head, which inevitably increases the front and rear depth of the head body, squeezes the cooking operation space above the stove, and on the other hand, the fan is located on the head position, which also increases the noise and reduces the user experience.

[0005] For another example, the Chinese invention patent with application number CN201920176942.3 (authorization announcement number: CN210740482U) discloses a fan-external subwoofer integrated stove, including a fuselage, a fan, a head connected to the fuselage, a stove head on the fuselage, the fan including a volute, a wind wheel and a motor driving the wind wheel, the head including a smoking chamber, a smoking port on the front of the smoking chamber, the smoking chamber connected to a bellows, the bellows is placed outside the fuselage, and the fan is placed inside the bellows. The above-mentioned integrated stove with an external fan has low noise, is easy to maintain and clean, and the internal space of the fuselage can be fully utilized. However, since the integrated stove adopts an external fan structure, the fan is relatively far away from the smoke intake port / air duct of the fuselage, and the entire air duct from the air inlet to the air outlet on the side of the fuselage is also narrow and long. In particular, the smoke needs to turn 90° before entering the exhaust duct. This unique structure causes the smoke to easily accumulate at the bottom of the air duct of the fuselage, causing turbulence, and cannot be discharged from the air duct in time, resulting in low overall smoke absorption and exhaust efficiency of the integrated stove. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide an integrated stove system with an external fan, which can effectively reduce the smoke exhaust resistance in the smoke exhaust duct and improve the smoke exhaust efficiency, in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a control method for an integrated stove system with an external fan, which can effectively reduce the smoke exhaust resistance in the smoke exhaust duct and improve the smoke exhaust efficiency, in view of the current status of the prior art.

[0008] The third technical problem to be solved by the present invention is to provide a control method for an external integrated stove system with a fan, which can adaptively adjust the diversion state of the smoke exhaust duct according to the oil smoke conditions under different cooking conditions to reduce the air volume loss, in response to the current status of the existing technology.

[0009] The fourth technical problem to be solved by the present invention is to provide a control method for an external fan integrated stove system that can effectively detect whether a corresponding purification module in a purification box has failed in response to the current status of the prior art.

[0010] The technical solution adopted by the present invention to solve the first technical problem is: a fan external integrated stove system,

[0011] The machine body comprises a cabinet and a machine head, wherein the machine head is located at the top rear side of the cabinet, and the machine head has a smoke inlet duct and an air inlet connected to the smoke inlet duct;

[0012] A fan system is arranged outside the machine body;

[0013] A smoke exhaust duct is provided in the cabinet, the upper part of which is connected to the smoke inlet duct, and the lower part is connected to the fan system. A guide plate assembly is also provided in the smoke exhaust duct, and the guide plate assembly includes at least one guide plate. The guide plate divides the internal space of the smoke exhaust duct into at least two guide ducts arranged side by side.

[0014] Generally, the air inlet and smoke inlet duct of the machine head extend in the left and right directions. In order to smoothly discharge the smoke entering the smoke inlet duct into the smoke exhaust duct and further reduce the air intake resistance, the smoke exhaust duct is an arc-shaped duct that is wider at the top and narrower at the bottom in the left and right directions. The lower part of the smoke exhaust duct has a smoke exhaust port for discharging smoke, and at least the lower part of the guide plate is inclined from top to bottom toward the smoke exhaust port.

[0015] In order to prevent the smoke from being disturbed after flowing out through each guide air duct and being unable to smoothly enter the smoke exhaust port, the smoke exhaust air duct has at least two guide plates arranged in sequence in the left and right directions, and each of the guide plates extends in the front and back directions. The height of the bottom edge of each guide plate increases from the position farthest from the smoke exhaust port to the position close to the smoke exhaust port.

[0016] The structural arrangement of the guide plate in the exhaust duct enables the outlets of each guide duct to be arranged in layers in the up and down directions, which effectively reduces the problem of smoke interfering with each other after flowing out of each guide duct, and further ensures that the smoke in the exhaust duct can be discharged smoothly.

[0017] Due to different air volume states (i.e. different rotation speeds of the fan system), the optimal inclination angle (minimum flow resistance) of the guide plate is also different. In order to adapt to different air volume states of the integrated stove, the guide plate includes a first plate arranged vertically and a second plate rotatably connected to the bottom of the first plate. The second plate is inclined from top to bottom toward the smoke exhaust port and can be driven by a first driving mechanism to adjust the relative angle with the first plate.

[0018] In order to automatically adjust the inclination state of the guide plate according to the actual change in air volume, so as to achieve the purpose of automatically adapting to the corresponding air volume change during the operation of the integrated stove, minimize the smoke exhaust resistance, and reduce the vortex, air volume loss and noise problems caused by smoke turning and smoke accumulation at the bottom of the air duct, it also includes a first wind speed sensor arranged in the flow path between the smoke exhaust air duct and the fan system, and the first wind speed sensor is electrically connected to the control system of the integrated stove. The control system determines whether the current wind speed value reaches a first set wind speed threshold based on the wind speed signal received from the first wind speed sensor, and when the first set wind speed threshold cannot be reached, controls the first driving mechanism to drive the second plate to swing to a set angle in a preset rotation direction.

[0019] Generally, the first driving mechanism can adopt various existing technologies such as an electric push rod that can drive the second plate of each guide plate to deflect, a structure in which a driving motor and a connecting rod mechanism cooperate. In order to facilitate the arrangement in the smoke exhaust duct and realize the synchronous movement of the second plates of each guide plate, the first driving mechanism includes a first driving motor, and the output shaft of the first driving motor is connected to the second plate of each guide plate through a connecting rod mechanism, thereby driving the second plates to deflect synchronously.

[0020] In order to simplify the structure of the connecting mechanism and reduce the occupied space in the smoke exhaust duct, the connecting rod mechanism includes a first rod and a second rod hinged to each other, the first end of the first rod is connected to the output shaft of the first drive motor so that it can rotate with the output shaft of the first drive motor, the second end of the first rod is hinged to the end of the second rod, and the side edges of the second plates of each guide plate are hinged to different positions in the length direction of the second rod.

[0021] For different air volume conditions, in order to enable the smoke in the smoke inlet duct to enter the guide duct in the smoke exhaust duct in a balanced manner and reduce the airflow accumulation and turbulence problems caused by the structure of the smoke exhaust duct itself (the fan is external and relatively narrow and long, and has airflow deflection), the guide plates in the smoke exhaust duct have at least two arranged in sequence in the left and right directions, and at least the upper length of each guide plate is telescopically adjustable.

[0022] In order to achieve telescopic adjustment of the guide plate, each guide plate includes a fixed plate and a movable plate connected to the fixed plate. The movable plate can be driven by a second driving mechanism to move up and down relative to the fixed plate, thereby changing the height position of the top edge of the guide plate.

[0023] In order to adapt to different cooking conditions, especially when the oil fume concentration on the left and right sides is different, the efficiency of oil fume suction and exhaust is further improved, and a first oil fume sensor for detecting the oil fume concentration on the left side of the front of the machine head and a second oil fume sensor for detecting the oil fume concentration on the right side of the front of the machine head are also included. The first oil fume sensor, the second oil fume sensor and the second driving mechanism are all electrically connected to the control system of the integrated stove. The control system controls the second driving mechanism to drive the movable plate of the guide plate to move up and down according to the oil fume signals received from the first oil fume sensor and the second oil fume sensor, so that the guide plate assembly has at least the following states:

[0024] In the first state, the oil fume concentrations on the left and right sides are both lower than the set oil fume threshold, and the concentration difference between the oil fume concentrations on the left and right sides is less than the set difference, and the movable plates of the guide plates are driven by the second driving mechanism to move down to the first set position, and the top edges of the guide plates are basically at the same height position;

[0025] In the second state, the oil fume concentrations on the left and right sides are both greater than or equal to the set oil fume threshold, and the concentration difference between the oil fume concentrations on the left and right sides is less than the set difference, and the movable plates of each guide plate are driven by the second driving mechanism to move upward to the second set position, and the top edges of each guide plate are substantially at the same height position;

[0026] In the third state, the oil fume concentration on the left side is greater than that on the right side, and the difference between the oil fume concentrations on the left and right sides is greater than the set difference, and the movable plate of the guide plate on the right side is driven by the second driving mechanism to move upward by a distance greater than the distance of the movable plate of the guide plate on the left side, so that the height of the top edge of each guide plate decreases from right to left in sequence;

[0027] In the fourth state, the oil fume concentration on the right side is greater than that on the left side, and the concentration difference between the left and right sides is greater than the set difference. The movable plate of the guide plate on the left side moves upward by the second driving mechanism for a distance greater than the distance the movable plate of the guide plate on the right side moves upward, thereby causing the height of the top edge of each guide plate to decrease from left to right.

[0028] In the first state, the oil fume concentrations on the left and right sides of the integrated stove are relatively low, and there is little difference in the oil fume concentrations on the left and right sides. In this case, it means that the cooking conditions on the left and right sides are basically the same (such as cooking porridge, soup, steaming, etc. with less oil fume, of course, it can also be in the off or standby state). In this case, the corresponding air volume demand is small and the wind speed is low. Therefore, the movable plate of each guide plate can be moved down to a low position (that is, the first set position), and the top edges of each guide plate can be basically at the same height, so that the smoke can flow to the bottom of the smoke exhaust duct faster, thereby increasing the exhaust speed of the smoke.

[0029] In the second state, the oil fume concentrations on the left and right sides of the integrated stove are relatively high, and the difference in oil fume concentrations on the left and right sides is not large. In this case, it means that the cooking conditions on the left and right sides are basically the same (such as stir-frying). In this case, the corresponding air volume demand is large and the wind speed is high. When the oil fume enters the smoke inlet channel or the smoke exhaust duct, it is more likely to have eddy and turbulent flow. Therefore, the movable plate of each guide plate is moved up to a high position as close to the air inlet as possible (that is, the second set position), and the top edges of each guide plate are basically at the same height. This can allow the high-concentration oil fume coming in from the air inlet to be diverted faster. After the high-concentration oil fume is diverted in time by the guide plate, it is easier to be discharged from the smoke exhaust duct, so as not to generate large eddy and turbulent flow problems in the process of smoke discharge, resulting in poor smoke exhaust.

[0030] In the third and fourth states, the oil fume concentrations on the left and right sides of the integrated stove are quite different. Correspondingly, the air volume requirements and wind speeds on the left and right sides are also inconsistent. Setting the movable plate of the guide plate to an upper and lower staggered distribution structure allows the smoke on the side with high oil fume concentration to be discharged downward faster, and effectively isolates the possibility of high-concentration oil fume flowing to the other side, thereby improving the efficiency of oil fume suction and exhaust.

[0031] Generally, the second driving mechanism can adopt various existing technologies such as an electric push rod that can drive the movable plate of each guide plate to move, a structure that cooperates with a drive motor and a gear rack. In order to ensure the up and down movement adjustment progress of the movable plate, the second driving mechanism includes a second drive motor, which is fixed relative to the fixed plate of the guide plate. The output shaft of the second drive motor is connected to the movable plate through a gear rack transmission assembly, thereby driving the movable plate to move up and down relative to the fixed plate.

[0032] In order to improve the oil fume purification effect of the integrated stove, the fan system includes a first axial flow fan driven by a DC brushless motor, and a purification box is also provided downstream of the first axial flow fan. An electrostatic adsorption module and an activated carbon adsorption module are sequentially provided in the purification box along the smoke flow direction, and a second wind speed sensor is also provided near the outlet of the purification box. The second wind speed sensor is electrically connected to the control system of the integrated stove, so that the rotation speed of the first axial flow fan is adjusted according to the difference between the second wind speed value detected by the second wind speed sensor and the second set wind speed threshold according to the mapping relationship preset in the control system.

[0033] When the speed of the axial flow fan is constant, the difference between the second wind speed value detected by the second wind speed sensor and the second set wind speed threshold reflects to a certain extent the change in the flow resistance of the purification box (for example, the accumulation of oil and dirt leads to an increase in flow resistance). When the flow resistance of the purification box increases, in order to achieve smooth smoke exhaust, the wind speed of the axial flow fan needs to be increased accordingly. Therefore, according to preliminary experimental measurements, a mapping relationship between the second wind speed value, the second set wind speed threshold and the first axial flow fan speed can be established. Among them, when the second wind speed value detected by the second wind speed sensor is less than the second set wind speed threshold, it means that the smoke exhaust effect of the fan system needs to be improved. The difference between the second wind speed value detected by the second wind speed sensor and the second set wind speed threshold has a certain functional relationship with the fan speed. The fan speed automatically changes with the difference to achieve stepless speed regulation of the axial flow fan.

[0034] In order to monitor the purification effect of the purification box in real time, a third oil fume sensor and a fourth oil fume sensor are also included. The third oil fume sensor is arranged in the purification box and is located between the activated carbon adsorption module and the electrostatic adsorption module. The fourth oil fume sensor is arranged downstream of the purification box. The third oil fume sensor, the fourth oil fume sensor and the electrostatic adsorption module are all electrically connected to the control system. The control system determines whether the electrostatic adsorption module is invalid according to whether the change value of the oil fume concentration detected by the third oil fume sensor and the fourth oil fume sensor after the electrostatic adsorption module increases the set voltage is greater than the set value.

[0035] The technical solution adopted by the present invention to solve the second technical problem is: a control method for an integrated stove system, comprising the following steps:

[0036] S1, integrated stove starts;

[0037] S2. The first wind speed sensor obtains the first wind speed value V1 downstream of the smoke exhaust duct, and transmits the wind speed signal to the control system, and then determines whether the current first wind speed value V1 reaches the first set wind speed threshold V0:

[0038] If V1≥V0, the first driving mechanism does not act, and the second plate of the guide plate remains at the original angle state;

[0039] If V1<V0, the first driving mechanism drives the second plate to deflect by a set angle in a preset rotation direction, and then enters step S3;

[0040] S3. Determine whether the first wind speed value V1 detected by the first wind speed sensor has a significant change. If yes, return to step S2. If not, the first driving mechanism drives the second plate to continue to deflect by a set angle in a preset rotation direction, and then repeat this step.

[0041] The technical solution adopted by the present invention to solve the third technical problem is: a control method for an integrated stove system, comprising the following steps:

[0042] The first oil fume sensor and the second oil fume sensor respectively obtain the oil fume concentration value Q1 on the left side and the oil fume concentration value Q2 on the right side of the front of the engine head, and transmit the corresponding oil fume concentration signals to the control system. The control system compares the received oil fume concentration signal with the set oil fume threshold value Qn and compares |Q1-Q2| with the set concentration difference value Q0:

[0043] If Q1<Qn, Q2<Qn, and |Q1-Q2|<Q0, the control system controls the second driving mechanism corresponding to each guide plate to move, driving the movable plate of each guide plate to move down to a first set position, in which the top edges of each guide plate are substantially at the same height;

[0044] If Q1≥Qn, Q2≥Qn, and |Q1-Q2|<Q0, the control system controls the second driving mechanism corresponding to each guide plate to move, driving the movable plate of each guide plate to move up to a second set position, in which the top edges of each guide plate are substantially at the same height;

[0045] If Q1>Q2, and |Q1-Q2|≥Q0, the control system controls the second driving mechanism corresponding to each guide plate to move, driving the movable plate of each guide plate to move up to the third set position, wherein the movable plate of the guide plate on the right side moves upward by a distance greater than the movable plate of the guide plate on the left side moves upward by a distance, and in the third set position state, the height of the top edge of each guide plate decreases from right to left in sequence;

[0046] If Q2>Q1, and |Q1-Q2|≥Q0, the control system controls the second driving mechanism corresponding to each of the guide plates to move upward, driving the movable plate of each guide plate to move up to a fourth set position, wherein the movable plate of the guide plate on the left moves upward a distance greater than the movable plate of the guide plate on the right. In the fourth set position state, the height of the top edge of each of the guide plates decreases from left to right in sequence.

[0047] The technical solution adopted by the present invention to solve the fourth technical problem is: a control method for an integrated stove system, comprising the following steps:

[0048] Step 10: Start the purification box detection program;

[0049] Step 11, the fourth oil fume sensor obtains the oil fume concentration Q4 of the current smoke filtered by the purification box, and then determines whether Q4 is less than the set oil fume concentration value Qm. If yes, it is determined that the adsorption capacity of the electrostatic adsorption module and the activated carbon adsorption module in the purification box is good; if not, proceed to step 12;

[0050] Step 12, judging whether the current voltage value of the electrostatic adsorption module reaches the set voltage value, if yes, proceeding to step 13; if no, the control system controls the electrostatic adsorption module to increase the set voltage, and then proceeding to step 14;

[0051] Step 13, the third oil fume sensor obtains the oil fume concentration Q3 of the flue gas currently filtered by the electrostatic adsorption module in the purification box, and determines whether Q3-Q4 is greater than the set value. If yes, it is determined that the purification effect of the electrostatic adsorption module is not good and needs to be cleaned; if not, it is determined that the activated carbon adsorption module is invalid and needs to be replaced;

[0052] Step 14, determine whether the change value of the oil fume concentration detected by the third oil fume sensor is greater than the set value. If yes, return to step 11. If not, it is determined that the current purification effect of the electrostatic adsorption module is not good and needs to be cleaned.

[0053] Compared with the prior art, the advantages of the present invention are as follows: for integrated stoves with external fans, a corresponding guide plate assembly is arranged in the exhaust duct of the integrated stove cabinet, which can divide the exhaust duct into at least two guide ducts. In this way, the smoke in the smoke inlet duct can be multi-stage diverted in the process of being discharged to the exhaust duct, so that the smoke can flow to the bottom more smoothly, thereby effectively reducing the accumulation of smoke at the bottom of the narrow and long exhaust duct (especially near the turning position), improving the vortex and noise problems in the exhaust duct, reducing the exhaust resistance and air volume loss, and effectively improving the efficiency of oil fume extraction. In the preferred embodiment, the lower deflection angle of the guide plate in the exhaust duct can be automatically adjusted according to the actual air volume change, so as to achieve the purpose of automatically adapting to the air volume change during the operation of the integrated stove, reducing the exhaust resistance to the greatest extent, and improving the vortex, air volume loss and noise problems caused by the smoke turning and the accumulation of smoke at the bottom of the duct. In another preferred embodiment, the upper part of the guide plate in the smoke exhaust duct can be adjusted up and down according to the oil fume concentration at the air inlet of the machine head to cope with different cooking conditions. In particular, for conditions where the oil fume concentration on the left and right sides is quite different, the upper height position of the guide plate is adjustable, which isolates the possibility of high-concentration smoke flowing to the other side, allowing the smoke to flow more smoothly in the smoke exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of the three-dimensional structure of an integrated stove system according to an embodiment of the present invention;

[0055] Figure 2 It is a schematic diagram of the three-dimensional structure of the body of an embodiment of the present invention;

[0056] Figure 3 This is a schematic diagram of the three-dimensional structure of the rear part of the machine body of the embodiment of the present invention without the rear side panels;

[0057] Figure 4 It is a rear view of the body of the embodiment of the present invention (the guide plate assembly is in the first setting position);

[0058] Figure 5 It is a rear view of the body of the embodiment of the present invention (the guide plate assembly is in the second setting position);

[0059] Figure 6 It is a rear view of the body of the embodiment of the present invention (the guide plate assembly is in the third setting position);

[0060] Figure 7 It is a rear view of the body of the embodiment of the present invention (the guide plate assembly is in the fourth setting position);

[0061] Figure 8 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0062] Fig. 9 for Figure 8 Sectional view at AA in the middle;

[0063] Fig.10 It is a schematic diagram of the three-dimensional structure of the fan system and the purification box according to an embodiment of the present invention;

[0064] Fig.11 A control flow chart of a method for adjusting the height of a guide plate assembly according to an embodiment of the present invention;

[0065] Fig.12 A control flow chart of a method for adjusting the angle of a guide plate assembly according to an embodiment of the present invention;

[0066] Fig.13 This is a control flow chart of a method for detecting the adsorption function of a purification box according to an embodiment of the present invention. DETAILED DESCRIPTION

[0067] The present invention is further described in detail below with reference to the accompanying drawings.

[0068] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0069] See also Figure 1-Figure 13 An integrated stove system includes a machine body 10, a fume suction device and a purification box. The fume suction device includes a fan system 30 and an auxiliary air suction device 40. The fan system 30 is a main air suction device and is arranged outside the machine body 10.

[0070] The machine body 10 includes a cabinet 11 and a machine head 12. The front of the cabinet 11 is generally provided with a box structure such as a steamer 112, an oven or a disinfection cabinet. The rear of the cabinet 11 is generally provided with a vertically extending smoke exhaust duct 113. The top of the cabinet 11 is provided with a stove 111, and the stove 111 is provided with a burner 110. The burners 110 are generally two and arranged in sequence along the left and right directions. The machine head 12 is arranged at the top rear side of the cabinet 11 and has a vertically extending smoke inlet duct 120. The front top of the machine head 12 also has a transversely extending (i.e., left and right) air inlet 13, and the air inlet 13 is connected to the top of the smoke inlet duct 120. The top of the machine head 12 also has a forward extending smoke barrier 123, which is located above the air inlet 13 and also extends along the left and right directions.

[0071] The smoke inlet channel of the machine head 12 is generally defined by a back plate 124 and a front side plate 125 arranged relatively spaced apart from each other, wherein the height of the back plate 124 is higher than that of the front side plate, thereby forming an upper open air inlet 13. The baffle portion extends forward from the front of the back plate 124.

[0072] In order to match the air inlet 13 of the machine head 12, ensure a relatively long air outlet length, and avoid occupying a large space at the air inlet 13, the auxiliary air suction device 40 of this embodiment includes at least one cross-flow fan arranged at the air inlet 13. The cross-flow fan is arranged to extend in the left-right direction at the air inlet 13.

[0073] See also Figure 8 The smoke inlet duct 120 also has a partition 20 extending forward and backward and arranged vertically, and the partition 20 divides the smoke inlet duct 120 into a first duct 121 located on the left and a second duct 122 located on the right. The arrangement of the partition 20 can achieve left-right diversion of the smoke inlet duct 120, enhance the efficiency of oil fume exhaust, and prevent the left and right oil fume from interfering with each other when cooking conditions are bad. The vertically arranged smoke inlet duct 120 is defined in the machine head 12. The upper part of the partition 20 extends to the air inlet 13, thereby dividing the air inlet 13 into a first air inlet 131 corresponding to the first air duct 121 and a second air inlet 132 corresponding to the second air duct 122.

[0074] The side wall of the partition 20 facing the first air duct 121 is tilted from top to bottom to the left to form the first guide surface 21, and the side wall of the partition 20 facing the second air duct 122 is tilted from top to bottom to the right to form the second guide surface 22. Among them, the first guide surface 21 and the second guide surface 22 can be formed by the thickness change of the partition 20 along the height direction, that is, the thickness gradually increases from top to bottom. In particular, the first guide surface 21 and the second guide surface 22 can be a flat surface or a concave curved surface structure. The design of the guide surfaces on the left and right sides of the partition 20 allows the oil fume airflow to smoothly enter the exhaust air duct 113 in the cabinet 11 along the corresponding air ducts on the left and right sides, avoiding the blockage of the oil fume in the cavity of the integrated stove head 12 and interfering with the exhaust efficiency, improving the smoothness of the flow of the smoke airflow in the smoke inlet air duct 120, and reducing wind resistance and noise.

[0075] In order to adapt to the first air duct 121 and the second air duct 122, the crossflow fans are divided into two groups, specifically including a first crossflow fan 41 arranged corresponding to the first air duct 121 and a second crossflow fan 42 arranged corresponding to the second air duct 122. There are two first crossflow fans 41, which are arranged in sequence along the left-right direction at the first air inlet 131 of the first air duct 121. There are also two second crossflow fans 42, which are arranged in sequence along the left-right direction at the second air inlet 132 of the second air duct 122.

[0076] See also Fig.10 The fan system 30 of this embodiment adopts an axial flow fan, which is connected to the smoke exhaust duct 113 in the cabinet through the smoke exhaust pipe 60. Specifically, there are two axial flow fans, namely a first axial flow fan 31 and a second axial flow fan 32. The first axial flow fan 31 is arranged downstream of the purification box 60, and the second axial flow fan 32 is arranged upstream of the purification box 60. The first axial flow fan 31 adopts an axial flow fan driven by a DC brushless motor, and the second axial flow fan 32 adopts an axial flow fan driven by a constant speed.

[0077] This embodiment uses a combination of multiple small cross-flow fans and axial-flow fans to replace the original large centrifugal fans. The volume is significantly smaller than the traditional multi-blade centrifugal fan, which can reserve more space for other modules of the integrated stove, or make the functional modules of the integrated stove have a larger capacity, thereby improving the integration effect of the integrated stove.

[0078] The machine body 10 of this embodiment also has an oil fume sensor disposed adjacent to the air inlet 13. The oil fume sensor includes a first oil fume sensor 51 and a second oil fume sensor 52, wherein the first oil fume sensor 51 is disposed adjacent to the first air duct 121 and is used to detect the oil fume size in the left area of ​​the machine body 10. The second oil fume sensor 52 is disposed adjacent to the second air duct 122 and is used to detect the oil fume size in the right area of ​​the machine body 10.

[0079] The first oil fume sensor 51, the second oil fume sensor 52, the first crossflow fan 41 and the second crossflow fan 42 are all electrically connected to the control system of the integrated stove, so that the control system can control the air volume of the first crossflow fan 41 and the second crossflow fan 42 according to the oil fume concentration detected by the first oil fume sensor 51 and the second oil fume sensor 52, so as to better adapt to the cooking conditions with different oil fume amounts on the left and right sides. For example, when the oil fume concentration on the left side is greater than that on the right side (it may also be that cooking is performed on the left side and not on the right side), the oil fume sensors on the left and right sides recognize this and send oil fume signals to the control system, and the control system controls the air volume of the first crossflow fan 41 and the second crossflow fan 42, specifically, the air volume of the first crossflow fan 41 is greater than that of the second crossflow fan 42. The same applies in reverse.

[0080] On the other hand, the fan system 30 is also electrically connected to the control system of the integrated stove, so as to control the air volume of the fan system 30 and the auxiliary air suction device 40 according to the oil fume concentration detected by the oil fume sensor. Since the negative pressure of the integrated stove for sucking and exhausting oil fume is mainly controlled by the fan system 30, and the fan system 30 is far away from the air inlet 13 of the body 10 of the integrated stove, and there is a certain flow resistance, during the process of a large amount of oil fume rising, especially when the oil fume suction device of the integrated stove is initially started, the oil fume does not have time to be sucked into the air inlet 13, and it is easy to escape. Therefore, when the integrated stove is initially started, the cross-flow fan close to the smoke source can be operated with a large air volume. After the start-up setting time and normal operation, that is, after the negative pressure of the fan system 30 can meet the oil fume suction and exhaust requirements, the cross-flow fan can be controlled to run with a small air volume again.

[0081] See also Figure 3 Since the integrated stove adopts an external fan system 30, the fan is relatively far away from the smoke outlet / air duct of the cabinet, and the entire air duct from the air inlet 13 to the air outlet on the side of the cabinet is also narrow and long. In particular, the smoke needs to turn 90 degrees before entering the exhaust pipe. This unique structure causes the smoke to easily accumulate at the bottom of the air duct of the cabinet, causing turbulence and failing to be discharged from the air duct in time, resulting in low overall smoke suction and exhaust efficiency of the integrated stove. For this reason, a guide plate 70 assembly is provided in the exhaust duct 113 of the cabinet 11, wherein the guide plate 70 assembly includes at least one guide plate. The guide plate 70 extends in the front-to-back direction as a whole, thereby dividing the internal space of the smoke exhaust duct 113 into at least two guide ducts 1131 arranged side by side. As a result, the smoke in the smoke inlet duct 120 can be diverted in multiple stages during the process of being discharged into the smoke exhaust duct 113, so that the smoke can flow to the bottom more smoothly. As a result, the smoke accumulation at the bottom of the narrow and long smoke exhaust duct 113 (especially near the turning position) can be effectively reduced, the vortex and noise problems in the smoke exhaust duct 113 can be improved, the smoke exhaust resistance and air volume loss can be reduced, and the efficiency of oil fume extraction and exhaust can be effectively improved.

[0082] The smoke exhaust duct 113 of this embodiment is an arc-shaped duct that is wide at the top and narrow at the bottom, wherein the lower portion of the smoke exhaust duct 113 has a smoke exhaust port 1130 for exhausting smoke, and the smoke exhaust port 1130 can be connected to an external axial flow fan through a smoke exhaust pipe. In this embodiment, the smoke exhaust port 1130 is arranged on the left side of the machine body 10, and correspondingly, in order to guide the smoke in the smoke exhaust duct 113 to the smoke exhaust port 1130, at least the lower portion of the guide plate 70 is inclined from top to bottom toward the smoke exhaust port 1130.

[0083] See also Figure 3 There are three guide plates 70 in the exhaust air duct 113, and the three guide plates 70 are arranged in sequence in the left-right direction. The height of the bottom edge of each guide plate 70 increases from the position far away from the exhaust port 1130 to the position close to the exhaust port 1130. The structural arrangement of the guide plates 70 in the exhaust air duct enables the outlets of each guide air duct 1131 (towards the exhaust port 1130) to be arranged in layers in the upper and lower directions, which effectively reduces the problem of mutual interference of smoke after flowing out through each guide air duct 1131, and further ensures that the smoke in the exhaust air duct 113 can be discharged smoothly.

[0084] The guide plate 70 includes a first plate 71 arranged vertically and a second plate 72 rotatably connected to the bottom of the first plate 71 through a hinge 77, wherein the second plate 72 is inclined from top to bottom toward the smoke outlet 1130 and can be driven by a first driving mechanism to adjust the relative angle with the first plate 71. Figure 4 It can be seen that the height of the bottom edge of the second plate 72 of each guide plate 70 increases from right to left ("left and right" here refers to the left and right directions of the machine body 10 itself when viewed from the front side of the machine body).

[0085] Due to different optimal inclination angles (minimum flow resistance) of the guide plate 70 under different air volume states (i.e. different rotation speeds of the fan system 30), the above-mentioned structural design of the guide plate 70 with adjustable inclination angle can be adapted to different air volume states of the integrated stove, ensuring that the smoke in the smoke exhaust duct 113 can be discharged more quickly and timely.

[0086] Continue to see Figure 3, the first driving mechanism includes a first driving motor 73, which can be fixed on the bottom wall of the smoke exhaust duct 113, and the output shaft of the first driving motor 73 is connected to the second plate 72 of each guide plate 70 through a connecting rod mechanism. Specifically, the connecting rod mechanism includes a first rod 741 and a second rod 742 that are hinged to each other, the first end of the first rod 741 is connected to the output shaft of the first driving motor 73 so that it can rotate in the left and right directions with the output shaft of the first driving motor 73, and the second end of the first rod 741 is hinged to the end of the second rod 742. Among them, the second rod 742 is arranged to tilt upward from right to left, so that the side of the second plate 72 of each guide plate 70 is hinged to different positions in the length direction of the second rod 742. When the first driving motor 73 is in motion, it can drive the second plates 72 of each guide plate 70 to deflect synchronously in the same direction.

[0087] Another important invention point of this embodiment is that at least the upper length of each guide plate 70 is adjustable. Specifically, each guide plate 70 (the first plate 71 of the guide plate 70) includes a fixed plate 711 and a movable plate 712 connected to the fixed plate 711, and the movable plate 712 can be driven by the second driving mechanism to move up and down relative to the fixed plate 711, thereby changing the height position of the top edge of the guide plate 70. The second driving mechanism in this embodiment includes a second driving motor 75, which is fixed to the rear side plate of the cabinet 11, and the output shaft of the second driving motor 75 is connected to the movable plate 712 through a gear rack transmission assembly, thereby driving the movable plate 712 to move up and down relative to the fixed plate 711. The gear rack transmission assembly includes a transmission gear 761 and a transmission rack 762, wherein the transmission gear 761 is coaxially connected to the output shaft of the second driving motor 75, and the transmission rack 762 is vertically arranged on the movable plate 712 and meshes with the transmission gear 761. In order to achieve smooth sliding of the movable plate 712 and the fixed plate 711 , the fixed plate 711 and the movable plate 712 may be limited by a limiting sliding groove.

[0088] The first oil fume sensor 51 disposed at the air inlet 13 of the machine head 12 is used to detect the oil fume concentration on the left side of the front of the machine head 12, and the second oil fume sensor 52 is used to detect the oil fume concentration on the right side of the front of the machine head 12. The first oil fume sensor 51, the second oil fume sensor 52 and the second driving mechanism are all electrically connected to the control system of the integrated stove, and the control system controls the second driving mechanism to drive the movable plate 712 of the guide plate 70 to move up and down according to the oil fume signals received from the first oil fume sensor 51 and the second oil fume sensor, so that the guide plate 70 assembly has at least the following first state, second state, third state and fourth state.

[0089] In the first state, the oil fume concentrations on the left and right sides of the integrated stove are relatively low, and the difference in oil fume concentrations on the left and right sides is not large. In this case, it means that the cooking conditions on the left and right sides are basically the same (such as cooking porridge, soup, steaming, etc. with less oil fume, of course, it can also be in the off or standby state), and the corresponding air volume demand is small, and the wind speed is low. Therefore, the movable plate 712 of each guide plate 70 can be moved down to a low position (that is, the first set position), and the top edges of each guide plate 70 are basically at the same height position, so that the smoke flows to the bottom of the smoke exhaust duct faster, thereby increasing the exhaust speed of the smoke.

[0090] In the second state, the oil fume concentrations on the left and right sides of the integrated stove are relatively high, and the difference in oil fume concentrations on the left and right sides is not large. In this case, it means that the cooking conditions on the left and right sides are basically the same (such as stir-frying operations), and the corresponding air volume demand is large, the wind speed is high, and the oil fume enters the smoke inlet channel or the smoke exhaust duct. It is more likely to have eddy and turbulent flow. Therefore, the movable plate 712 of each guide plate 70 is moved up to a high position as close to the air inlet 13 as possible (that is, the second set position), and the top edges of each guide plate 70 are basically at the same height position, so that the high-concentration oil fume entering the air inlet 13 can be diverted faster. After the high-concentration oil fume is diverted in time by the guide plate 70, it is easier to be discharged from the smoke exhaust duct 113, so as not to generate large eddy and turbulent flow problems in the process of smoke discharge, resulting in poor smoke exhaust.

[0091] In the third state, the oil fume concentration on the left side is greater than that on the right side, and the difference between the oil fume concentrations on the left and right sides is greater than the set difference, and the movable plate 712 of the right guide plate 70 is driven by the second driving mechanism to move upward by a distance greater than the distance the movable plate 712 of the left guide plate 70 moves upward, so that the height of the top edge of each guide plate 70 decreases from right to left. Similarly, in the fourth state, the oil fume concentration on the right side is greater than that on the left side, and the difference between the oil fume concentrations on the left and right sides is greater than the set difference, and the movable plate 712 of the left guide plate 70 is driven by the second driving mechanism to move upward by a distance greater than the distance the movable plate 712 of the right guide plate 70 moves upward, so that the height of the top edge of each guide plate 70 decreases from left to right.

[0092] When the difference in oil fume concentration between the left and right sides of the integrated stove is relatively large, the corresponding air volume demand and wind speed on the left and right sides are also inconsistent, such as the third state and the fourth state mentioned above. The movable plate 712 of the guide plate 70 is correspondingly set to an upper and lower staggered distribution structure, which can allow the smoke on the side with high oil fume concentration to be discharged downward more quickly, and effectively isolate the possibility of high-concentration oil fume flowing to the other side, thereby improving the efficiency of oil fume suction and exhaust.

[0093] The first wind speed sensor 55 is arranged in the flow path between the smoke exhaust duct 113 and the fan system 30, specifically, between the second axial flow fan 32 and the purification box 60. The change in wind speed value detected by the first wind speed sensor 55 (compared with the set wind speed threshold at a certain wind speed) can reflect the size of the smoke exhaust resistance in the smoke exhaust duct 113. The first wind speed sensor 55 in this embodiment is electrically connected to the control system of the integrated stove. The control system determines whether the current wind speed value reaches the first set wind speed threshold according to the wind speed signal received from the first wind speed sensor 55, and when the first set wind speed threshold cannot be reached, the control system controls the first driving mechanism to drive the second plate 72 to deflect the set angle in the preset rotation direction until the first set wind speed threshold is reached. Thus, the inclination state of the guide plate 70 is automatically adjusted according to the actual wind volume change, so as to achieve the purpose of automatically adapting to the corresponding wind volume change during the operation of the integrated stove, and to reduce the smoke exhaust resistance to the greatest extent, and reduce the vortex, wind volume loss and noise problems caused by smoke turning and smoke accumulation at the bottom of the duct. The control process of adjusting the deflection angle of the second plate 72 of the guide plate 70 will be described below.

[0094] An electrostatic adsorption module 61 and an activated carbon adsorption module 62 are sequentially arranged in the purification box 60 along the direction of smoke flow. The structures and working principles of the electrostatic adsorption module 61 and the activated carbon adsorption module 62 are both prior art and are not described here. A second wind speed sensor 56 is also arranged near the outlet of the purification box 60. The second wind speed sensor 56 is electrically connected to the control system of the integrated stove, so that the difference between the second wind speed value detected by the second wind speed sensor 56 and the second set wind speed threshold value adjusts the speed of the first axial flow fan 31 according to the mapping relationship preset in the control system. When the rotation speed of the axial flow fan is constant, the difference between the second wind speed value detected by the second wind speed sensor 56 and the second set wind speed threshold reflects to a certain extent the change in the flow resistance of the purification box 60 (for example, the accumulation of oil and dirt leads to an increase in flow resistance). When the flow resistance of the purification box 60 increases, in order to achieve smooth smoke exhaust, the wind speed of the axial flow fan needs to be increased accordingly. Therefore, according to preliminary experimental measurements, a mapping relationship between the second wind speed value, the second set wind speed threshold and the rotation speed of the first axial flow fan 31 can be established. Among them, when the second wind speed value detected by the second wind speed sensor 56 is less than the second set wind speed threshold, it means that the smoke exhaust effect of the fan system 30 needs to be improved, and the difference between the second wind speed value detected by the second wind speed sensor 56 and the second set wind speed threshold can be in a certain functional relationship with the change in the fan speed, that is, the fan speed automatically follows the difference change to achieve stepless speed regulation of the axial flow fan.

[0095] The integrated stove of this embodiment also monitors the purification effect of the purification box 60 in real time through the third oil fume sensor 53 and the fourth oil fume sensor 54. The third oil fume sensor is arranged in the purification box 60 and is located between the activated carbon adsorption module 62 and the electrostatic adsorption module 61. The fourth oil fume sensor is arranged downstream of the purification box 60. The third oil fume sensor 53, the fourth oil fume sensor 54 and the electrostatic adsorption module 61 are all electrically connected to the control system. The control system determines whether the electrostatic adsorption module 61 is invalid according to whether the change value of the oil fume concentration detected by the third oil fume sensor 53 and the fourth oil fume sensor 54 after the electrostatic adsorption module 61 increases the set voltage is greater than the set value. The control procedure for monitoring the purification effect of the purification box 60 is described in detail below.

[0096] In addition to the guiding function, the guide plate 70 assembly in the exhaust duct 113 of this embodiment also has another significant function of condensing and separating the oil smoke. After the integrated stove is finished running, that is, in the shutdown or standby state, the movable plate 712 of each guide plate 70 will move down to the first set position, and at the same time, the second plate 72 will also deflect to a vertical state that is basically flush with the first plate 71 (that is, Figure 4 The middle inclination angle β is zero), thereby ensuring that the oil on the guide plate 70 can drip downward more smoothly. An oil receiving pan is also provided at the bottom of the smoke exhaust duct 113. The middle part of the oil receiving pan is concave, and an oil leakage port 140 is opened at the lowest position. The bottom of the cabinet 11 of the integrated stove also has an oil receiving box 15, which is used to receive the oil flowing from the oil leakage port 140 of the oil receiving pan. Specifically, the bottom of the front side of the cabinet 11 of the integrated stove also has an installation port, and the oil receiving box 15 is pulled in and out of the installation port, and when the oil receiving box 15 is in place, it is just below the oil leakage port 140 of the oil receiving pan.

[0097] A control method for adjusting the inclination angle of the guide plate 70 of an integrated stove system comprises the following steps:

[0098] S1, integrated stove starts;

[0099] S2. The first wind speed sensor 55 obtains the first wind speed value V1 downstream of the smoke exhaust duct 113, and transmits the wind speed signal to the control system, and then determines whether the current first wind speed value V1 reaches the first set wind speed threshold V0:

[0100] If V1 ≥ V0, the first driving mechanism does not act, and the second plate 72 of the guide plate 70 remains at the original angle;

[0101] If V1<V0, the first driving mechanism drives the second plate 72 to deflect by a set angle (which may be 5-10°) in a preset rotation direction, and then enters step S3;

[0102] S3. Determine whether the first wind speed value V1 detected by the first wind speed sensor 55 has a significant change (significant increase). If yes, return to step S2. If not, the first driving mechanism drives the second plate 72 to continue to deflect the set angle in the preset rotation direction, and then repeat this step.

[0103] The above-mentioned “whether the first wind speed value V1 changes significantly” can be judged by whether the difference in wind speed values ​​before and after the deflection action of the second plate 72 of the guide plate 70 is greater than a set wind speed difference threshold.

[0104] In this embodiment, the control method for adjusting the height of the guide plate 70 includes the following steps:

[0105] After the integrated stove is started, the first oil fume sensor 51 and the second oil fume sensor 52 respectively obtain the oil fume concentration value Q1 on the left side of the front of the machine head 12 and the oil fume concentration value Q2 on the right side, and transmit the corresponding oil fume concentration signals to the control system. The control system compares the received oil fume concentration signal with the set oil fume threshold value Qn and compares |Q1-Q2| with the set concentration difference value Q0:

[0106] If Q1<Qn, Q2<Qn, and |Q1-Q2|<Q0, the control system controls the second driving mechanism corresponding to each guide plate 70 to move, driving the movable plate 712 of each guide plate 70 to move down to the first set position, in which the top edges of each guide plate 70 are substantially at the same height;

[0107] If Q1≥Qn, Q2≥Qn, and |Q1-Q2|<Q0, the control system controls the second driving mechanism corresponding to each guide plate 70 to move, driving the movable plate 712 of each guide plate 70 to move up to the second set position, in which the top edges of each guide plate 70 are substantially at the same height;

[0108] If Q1>Q2, and |Q1-Q2|≥Q0, the control system controls the second driving mechanism corresponding to each guide plate 70 to move, driving the movable plate 712 of each guide plate 70 to move upward to the third set position, wherein the movable plate 712 of the right guide plate 70 moves upward by a distance greater than the movable plate 712 of the left guide plate 70 moves upward. In the third set position state, the height of the top edge of each guide plate 70 decreases from right to left in sequence;

[0109] If Q2>Q1, and |Q1-Q2|≥Q0, the control system controls the second driving mechanism corresponding to each of the guide plates 70 to operate, driving the movable plate 712 of each guide plate 70 to move up to a fourth set position, wherein the movable plate 712 of the guide plate 70 on the left moves upward a distance greater than the movable plate 712 of the guide plate 70 on the right moves upward. In the fourth set position state, the height of the top edge of each guide plate 70 decreases successively from left to right.

[0110] The method for detecting the purification effect of the purification box 60 in this embodiment includes the following steps:

[0111] Step 10, the detection program of the purification box 60 is started;

[0112] Step 11, the fourth oil fume sensor 54 obtains the oil fume concentration Q4 of the current smoke filtered by the purification box 60, and then determines whether Q4 is less than the set oil fume concentration value Qm. If yes, it is determined that the adsorption capacity of the electrostatic adsorption module 61 and the activated carbon adsorption module 62 in the purification box 60 is good; if not, it goes to step 12;

[0113] Step 12, judging whether the current voltage value of the electrostatic adsorption module 61 reaches the set voltage value, if yes, proceeding to step 13; if no, the control system controls the electrostatic adsorption module 61 to increase the set voltage, and then proceeding to step 14;

[0114] Step 13, the third oil fume sensor 53 obtains the oil fume concentration Q3 of the current fume in the purification box 60 after being filtered by the electrostatic adsorption module 61, and determines whether Q3-Q4 is greater than the set value. If yes, it is determined that the purification effect of the electrostatic adsorption module 61 is not good and needs to be cleaned; if not, it is determined that the activated carbon adsorption module 62 is invalid and needs to be replaced;

[0115] Step 14, determine whether the change value of the oil fume concentration detected by the third oil fume sensor 53 is greater than the set value. If yes, return to step 11. If not, it means that the purification adsorption effect of the electrostatic adsorption module 61 does not change much after the voltage is increased, that is, the current purification effect of the electrostatic adsorption module 61 is not good and needs to be cleaned.

Claims

1. A fan external integrated stove system, A machine body (10) comprises a cabinet (11) and a machine head (12), wherein the machine head (12) is located at the top rear side of the cabinet (11), and the machine head (12) has a smoke inlet duct (120) and an air inlet (13) connected to the smoke inlet duct (120); A fan system (30) is arranged outside the machine body (10); Features: A smoke exhaust duct (113) is provided in the cabinet (11), the upper portion of the smoke exhaust duct (113) is communicated with the smoke inlet duct (120), and the lower portion is communicated with the fan system (30); a guide plate assembly is also provided in the smoke exhaust duct (113), the guide plate assembly comprises at least one guide plate (70), and the guide plate (70) divides the internal space of the smoke exhaust duct (113) into at least two guide ducts (1131) arranged side by side; The lower part of the smoke exhaust duct (113) is provided with a smoke exhaust port (1130) for exhausting smoke; The guide plate (70) comprises a first plate (71) arranged vertically and a second plate (72) rotatably connected to the bottom of the first plate (71); the second plate (72) is inclined from top to bottom toward the smoke exhaust port (1130) and can be driven by a first driving mechanism to adjust a relative angle with the first plate (71); It also includes a first wind speed sensor (55) arranged in the flow path between the smoke exhaust duct (113) and the fan system (30), the first wind speed sensor (55) being electrically connected to the control system of the integrated stove, the control system judging whether the current wind speed value reaches a first set wind speed threshold value based on the wind speed signal received from the first wind speed sensor (55), and controlling the first driving mechanism to drive the second plate (72) to deflect by a set angle in a preset rotation direction when the first set wind speed threshold value cannot be reached.

2. The fan external integrated stove system according to claim 1, characterized in that: The smoke exhaust duct (113) is an arc-shaped duct that is wider at the top and narrower at the bottom in the left-right direction, and at least the lower portion of the guide plate (70) is inclined from top to bottom toward the smoke exhaust port (1130).

3. The fan external integrated stove system according to claim 2, characterized in that: The guide plates (70) in the smoke exhaust duct (113) have at least two guide plates (70) arranged in sequence in the left-right direction, and each of the guide plates (70) extends in the front-to-back direction. The height of the bottom edge of each of the guide plates (70) increases from a position away from the smoke exhaust port (1130) to a position close to the smoke exhaust port (1130).

4. The fan external integrated stove system according to claim 3, characterized in that: The first driving mechanism comprises a first driving motor (73), the output shaft of the first driving motor (73) being connected to the second plate (72) of each guide plate (70) through a connecting rod mechanism, thereby driving each second plate (72) to deflect synchronously.

5. The fan external integrated stove system according to claim 4, characterized in that: The connecting rod mechanism comprises a first rod (741) and a second rod (742) which are hinged to each other, wherein the first end of the first rod (741) is connected to the output shaft of the first drive motor (73) so as to be able to rotate along with the output shaft of the first drive motor (73), the second end of the first rod (741) is hinged to the end of the second rod (742), and the side edge of the second plate (72) of each guide plate (70) is hinged to different positions in the length direction of the second rod (742).

6. The fan external integrated stove system according to claim 1 or 2, characterized in that: The guide plates (70) in the smoke exhaust duct (113) include at least two guide plates (70) arranged in sequence and spaced apart in the left-right direction, and at least the upper portion of each guide plate (70) is telescopically adjustable in length.

7. The fan external integrated stove system according to claim 6, characterized in that: Each of the guide plates (70) comprises a fixed plate (711) and a movable plate (712) connected to the fixed plate (711); the movable plate (712) can be driven by a second driving mechanism to move up and down relative to the fixed plate (711), thereby changing the height position of the top edge of the guide plate (70).

8. The fan external integrated stove system according to claim 7, characterized in that: The device further comprises a first oil fume sensor (51) for detecting the oil fume concentration on the left side of the front of the machine head (12) and a second oil fume sensor (52) for detecting the oil fume concentration on the right side of the front of the machine head (12). The first oil fume sensor (51), the second oil fume sensor (52) and the second driving mechanism are all electrically connected to the control system of the integrated stove. The control system controls the second driving mechanism to drive the movable plate (712) of the guide plate (70) to move up and down according to the oil fume signals received from the first oil fume sensor (51) and the second oil fume sensor (52), so that the guide plate assembly has at least the following states: In the first state, the oil smoke concentrations on the left and right sides are both lower than the set oil smoke threshold, and the concentration difference between the oil smoke concentrations on the left and right sides is less than the set difference, the movable plates (712) of each of the guide plates (70) are driven by the second driving mechanism to move downward to the first set position, and the top edges of each of the guide plates (70) are substantially at the same height position; In the second state, the oil smoke concentrations on the left and right sides are both greater than or equal to the set oil smoke threshold, and the concentration difference between the oil smoke concentrations on the left and right sides is less than the set difference, and the movable plates (712) of each of the guide plates (70) are driven by the second driving mechanism to move upward to the second set position, and the top edges of each of the guide plates (70) are substantially at the same height position; In the third state, the oil fume concentration on the left side is greater than the oil fume concentration on the right side, and the concentration difference between the oil fume concentrations on the left and right sides is greater than the set difference, and the movable plate (712) of the guide plate (70) on the right side moves upwards by the second driving mechanism to a greater distance than the movable plate (712) of the guide plate (70) on the left side moves upwards, so that the height of the top edge of each guide plate (70) decreases from right to left in sequence; In the fourth state, the oil fume concentration on the right side is greater than the oil fume concentration on the left side, and the difference in oil fume concentration between the left and right sides is greater than the set difference. The movable plate (712) of the guide plate (70) on the left side moves upwards by the second driving mechanism, which is greater than the distance the movable plate (712) of the guide plate (70) on the right side moves upwards, thereby causing the height of the top edge of each of the guide plates (70) to decrease from left to right.

9. The fan external integrated stove system according to claim 7, characterized in that: The second driving mechanism comprises a second driving motor (75), the second driving motor (75) being fixed relative to the fixed plate (711) of the guide plate (70), and the output shaft of the second driving motor (75) being connected to the movable plate (712) via a gear rack transmission assembly, thereby driving the movable plate (712) to move up and down relative to the fixed plate (711).

10. The fan external integrated stove system according to any one of claims 1 to 5, characterized in that: The fan system (30) comprises a first axial flow fan (31) driven by a brushless DC motor, a purification box (60) is also provided downstream of the first axial flow fan (31), an electrostatic adsorption module (61) and an activated carbon adsorption module (62) are sequentially provided in the purification box (60) along the direction of smoke flow, and a second wind speed sensor (56) is also provided near the outlet of the purification box (60), and the second wind speed sensor (56) is electrically connected to the control system of the integrated stove.

11. The fan external integrated stove system according to claim 10, characterized in that: The system further comprises a third oil fume sensor (53) and a fourth oil fume sensor (54); the third oil fume sensor is arranged in the purification box (60) and between the activated carbon adsorption module (62) and the electrostatic adsorption module (61); the fourth oil fume sensor is arranged downstream of the purification box (60); the third oil fume sensor (53), the fourth oil fume sensor (54) and the electrostatic adsorption module (61) are all electrically connected to the control system.

12. A control method for an integrated stove system as claimed in claim 1, 4 or 5, characterized in that The following steps are involved: S1, integrated stove starts; S2. The first wind speed sensor (55) obtains a first wind speed value V1 downstream of the smoke exhaust duct (113), transmits the wind speed signal to the control system, and then determines whether the current first wind speed value V1 reaches a first set wind speed threshold value V0: If V1≥V0, the first driving mechanism does not operate, and the second plate (72) of the guide plate (70) remains at the original angle state; If V1<V0, the first driving mechanism drives the second plate (72) to deflect by a set angle in a preset rotation direction, and then enters step S3; S3, determining whether the first wind speed value V1 detected by the first wind speed sensor (55) has a significant change, if yes, returning to step S2, if no, the first driving mechanism drives the second plate (72) to continue to deflect by a set angle in a preset rotation direction, and then repeating this step.

13. A control method for an integrated stove system as claimed in claim 8, characterized in that The following steps are involved: The first oil smoke sensor (51) and the second oil smoke sensor (52) respectively obtain an oil smoke concentration value Q1 on the left side and an oil smoke concentration value Q2 on the right side of the front of the engine head (12), and transmit corresponding oil smoke concentration signals to the control system. The control system compares the received oil smoke concentration signal with a set oil smoke threshold value Qn and compares |Q1-Q2| with a set concentration difference value Q0: If Q1<Qn, Q2<Qn, and |Q1-Q2|<Q0, the control system controls the second driving mechanism corresponding to each guide plate (70) to move, driving the movable plate (712) of each guide plate (70) to move downward to a first set position, in which the top edges of each guide plate (70) are substantially at the same height; If Q1≥Qn, Q2≥Qn, and |Q1-Q2|<Q0, the control system controls the second driving mechanism corresponding to each guide plate (70) to operate, driving the movable plate (712) of each guide plate (70) to move upward to a second set position, in which the top edges of each guide plate (70) are substantially at the same height; If Q1>Q2, and |Q1-Q2|≥Q0, the control system controls the second driving mechanism corresponding to each guide plate (70) to operate, driving the movable plate (712) of each guide plate (70) to move up to a third set position, and in the third set position state, the height of the top edge of each guide plate (70) decreases from right to left in sequence; If Q2>Q1, and |Q1-Q2|≥Q0, the control system controls the second driving mechanism corresponding to each guide plate (70) to operate, driving the movable plate (712) of each guide plate (70) to move up to a fourth set position. In the fourth set position state, the height of the top edge of each guide plate (70) decreases from left to right in sequence.

14. A control method for an integrated stove system as claimed in claim 11, characterized in that The following steps are involved: Step 10, the detection program of the purification box (60) is started; Step 11, the fourth oil fume sensor (54) obtains the oil fume concentration Q4 of the smoke currently filtered by the purification box (60), and then determines whether Q4 is less than the set oil fume concentration value Qm. If so, it is determined that the electrostatic adsorption module (61) and the activated carbon adsorption module (62) in the purification box (60) have good adsorption capacity; if not, proceed to step 12; Step 12, judging whether the current voltage value of the electrostatic adsorption module (61) reaches the set voltage value, if yes, proceeding to step 13; if no, the control system controls the electrostatic adsorption module (61) to increase the set voltage, and then proceeding to step 14; Step 13, the third oil fume sensor (53) obtains the oil fume concentration Q3 of the fume currently in the purification box (60) after being filtered by the electrostatic adsorption module (61), and determines whether Q3-Q4 is greater than a set value. If yes, it is determined that the purification effect of the electrostatic adsorption module (61) is poor and needs to be cleaned; if not, it is determined that the activated carbon adsorption module (62) is invalid and needs to be replaced; Step 14, determining whether the change in the oil fume concentration detected by the third oil fume sensor (53) is greater than the set value, if yes, returning to step 11, if no, determining that the current purification effect of the electrostatic adsorption module (61) is poor and needs to be cleaned.

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