Integrated cooking appliance and control method thereof

Abstract

The application discloses an integrated cooking utensil and a control method thereof, and belongs to the technical field of cooking utensils. The integrated cooking utensil comprises an oil extractor hood, a cooking utensil located below the oil extractor hood and a cleaning device, and is characterized in that the cleaning device comprises a water tank arranged at the rear side of the cooking utensil, and a first chamber for containing a cleaning medium for cleaning the oil extractor hood is formed in the water tank. Compared with the prior art, the application has the advantages that the protruding water tank structure is arranged at the rear side of the cooking utensil, the cleaning requirement is met, the integrity of the whole machine is enhanced, and the problem that a gap is generated between the cooking utensil and a rear end table top when the cooking utensil is installed on a cabinet body, oil dirt is easily accumulated in the gap for a long time and the gap is difficult to clean is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to kitchen equipment, in particular, an integrated cooking appliance, and a control method of the integrated cooking appliance. BACKGROUND

[0002] The range hood has become one of the indispensable kitchen household appliances in modern families. The range hood works by using the principle of fluid dynamics, sucking and exhausting the oil fume through the centrifugal fan installed inside the range hood, and filtering part of the oil particles using the filter screen. The centrifugal fan includes a volute, an impeller installed in the volute, and a motor driving the impeller to rotate. When the impeller rotates, a negative pressure suction is generated at the center of the fan, which sucks the oil fume below the range hood into the fan, and the oil fume is accelerated by the fan and then collected and guided by the volute to be discharged outdoors.

[0003] Generally, the range hood is installed above the cooktop, and there is a certain gap between the rear side of the cooktop and the wall on which the range hood is installed. Therefore, during the use of the cooktop, oil stains are easily accumulated on the uneven rear side of the cooktop and the wall behind the cooktop, and it is difficult to clean, especially the gaps at the uneven rear side of the cooktop, the gaps at the corners of the cooktop and the wall, etc. Moreover, during the use of the range hood, a large amount of oil stains will accumulate on the fan, which can easily cause blockage and increase the load, affecting the use effect of the range hood. Therefore, some range hoods with self-cleaning function have been developed, but they can only clean the inside of the range hood, and cannot clean the oil stains on the cooktop and the wall.

[0004] With the continuous progress of the self-cleaning technology of the range hood, steam cleaning or water cleaning has been widely applied in the field of self-cleaning of the range hood. The basic principle is to generate steam by a steam generator or pump water by a water pump, and then deliver the steam or water to the nozzle at the end of the spray pipe. The steam or water is quickly sprayed out of the nozzle to clean the impeller and the volute.

[0005] The existing steam cleaning or water cleaning method usually adopts the form of an external water box or a water cup. For example, a range hood disclosed in Chinese Patent No. 201620368078.3 includes an oil fume filtering box body and an air suction box body, in which a fan system is installed. The fan system includes a wind tunnel shell, a fan installed in the wind tunnel shell, and an impeller. A spraying device is installed on the wind tunnel shell towards the impeller, including a shower nozzle. A water tank and a water pump are connected to the water inlet interface of the shower nozzle. The water pump is connected to the water inlet interface through a pipeline to provide cleaning liquid or water for the shower nozzle.

[0006] This self-cleaning range hood uses a water tank to store cleaning water, which greatly limits the time, range, and cleaning degree of the self-cleaning of the range hood, making it impossible to effectively solve the problem. Moreover, once the user loses the water box or the water cup, the self-cleaning function cannot be applied.

[0007] There is also a way of externally connecting the water pipe, such as a kind of range hood disclosed in Chinese patent application No. 201821200343.2, which comprises a fan and a fan cleaning system, the fan cleaning system comprises a water supply pipe and a return water pipe, the upstream end of the water supply pipe is connected to the water pipe and the downstream end is connected to the cleaning spray pipe, the cleaning spray pipe extends into the volute of the fan, the top end of the return water pipe communicates with the volute bottom cavity of the volute and the bottom end is connected to the external drain pipe.

[0008] This externally connected water pipe scheme, when discharging oil stains, will cause the generated oil stains to be too viscous, simply using gravity to discharge sewage, and the sewage pipe will be blocked after a long time, causing the problem of sewage discharge failure. SUMMARY

[0009] The first technical problem to be solved by the present application is to provide an integrated cooking appliance that can enhance overall integration and is easy to clean and maintain.

[0010] The second technical problem to be solved by the present application is to provide a control method for the integrated cooking appliance.

[0011] The technical solution adopted by the present application to solve the first technical problem is an integrated cooking appliance, comprising a range hood, a stove located below the range hood, and a cleaning device, characterized in that the cleaning device comprises a water tank arranged at the rear side of the stove, and a first chamber for containing cleaning medium for cleaning the range hood is formed in the water tank.

[0012] In order to reduce the energy consumption of heating the cleaning medium, the cleaning device further comprises a first water inlet pipe and a second water inlet pipe, the first water inlet pipe is respectively connected to the cleaning medium source and the first chamber, the second water inlet pipe is connected to the first chamber and is in fluid communication, the second water inlet pipe extends into the range hood, and the cleaning device further comprises a pipe for heat exchange passing through the stove.

[0013] Preferably, in order to make full use of the waste heat of the stove, the stove comprises a cooktop panel, a burner arranged on the cooktop panel, and a switch, an energy collecting ring is arranged around the burner, and the pipe for heat exchange passes below the burner, the switch and the energy collecting ring.

[0014] Preferably, in order to utilize the heat of the energy focusing ring, the cleaning device further comprises a water inlet valve and a water outlet valve, the pipeline for heat exchange comprises a first conduit and a second conduit, the first water inlet pipe is connected to the input end of the water inlet valve, the first conduit is connected to the output end of the water inlet valve, the first conduit extends to the energy focusing ring through the bottom of the cooking head and the switch in sequence, one end of the second conduit is connected to the energy focusing ring, the other end of the second conduit is connected to the input end of the water outlet valve, and the output end of the water outlet valve is connected to the first chamber; the energy focusing ring is hollow, and the first conduit and the second conduit are in fluid communication with the inside of the energy focusing ring, respectively.

[0015] In order to facilitate cleaning of the energy focusing ring, the energy focusing ring, the cooking table panel, the first conduit and the second conduit are detachably connected.

[0016] Preferably, the detachable connection mode is that the bottom of the cooking table panel is provided with a connecting pipe, the ends of the first conduit and the second conduit are respectively inserted into the corresponding connecting pipes, the bottom of the energy focusing ring is provided with a joint, the joint is inserted into the connecting pipe, and the joint conducts the first conduit and the inside of the energy focusing ring and conducts the second conduit and the inside of the energy focusing ring, respectively.

[0017] In order to facilitate the flow of the cleaning medium from the first conduit into the energy focusing ring and from the energy focusing ring into the second conduit, the end of the joint towards the first conduit or the second conduit is formed with a rounded structure.

[0018] In order to avoid leakage of the cleaning medium, the outer periphery of the joint is provided with a sealing ring.

[0019] Preferably, in order to reduce the friction between the sealing ring and the connecting pipe, the joint has a tapered portion, and the sealing ring is arranged at the smallest tapered dimension.

[0020] In order to better control the temperature of the cleaning medium in the first chamber, a heating module is arranged in the first chamber.

[0021] In order to discharge oil stains and waste water after cleaning, a partition is arranged in the water tank, thereby dividing the water tank into a first chamber and a second chamber arranged in front and back, a sewage discharge opening is formed in the bottom of the range hood, the range hood is in fluid communication with the second chamber through the sewage discharge opening, and the cleaning device further comprises a drain pipe for fluid communication with the second chamber and a sewer, respectively.

[0022] In order to control the discharge of sewage, a sewage discharge assembly is arranged in the second chamber, and the sewage discharge assembly can connect or disconnect the second chamber and the drain pipe.

[0023] Preferably, the working mode of the blocking member is that the sewage assembly comprises a blocking member capable of lifting and driven by the linear driving module, the blocking member comprises a conical part, and the conical part gradually reduces in size from top to bottom, and the maximum size of the blocking member is greater than the size of the inlet of the drain pipe, so as to block the inlet of the drain pipe when descending.

[0024] In order to avoid the blockage of the drain pipe, the sewage assembly further comprises a rotating shaft, a driving mechanism and a stirring part, the rotating shaft extends longitudinally, the driving mechanism drives the rotating shaft to rotate around its axis, the blocking member is arranged at the lower end of the rotating shaft, and the stirring part is arranged on the outer periphery of the rotating shaft, and the linear driving module drives the blocking member, the rotating shaft, the driving mechanism and the stirring part to lift as a whole.

[0025] In order to facilitate the driving of the lifting of the blocking member, the sewage assembly further comprises a fixed plate, the linear driving module is a second electromagnet, the driving mechanism is fixed to the bottom of the fixed plate, the second electromagnet is located above the fixed plate, the fixed plate is connected with the second electromagnet through an elastic member, and the fixed plate maintains a downward movement trend.

[0026] In order to facilitate the control of whether the sewage assembly works and how it works, the cleaning device further comprises a temperature sensor and a liquid level sensor, a heating module is arranged in the first chamber of the water tank, and the temperature sensor is arranged on the blocking member.

[0027] In order to avoid the gap between the installation position of the stove and the water tank, which causes the accumulation of oil stains after a long time and is difficult to clean, the water tank and the stove are integrally formed.

[0028] The technical scheme adopted by the present application to solve the second technical problem is: a control method of an integrated cooking appliance as described above, characterized in that:

[0029] 1) After starting, the liquid level sensor detects the liquid level in the second chamber in real time to obtain the current liquid level height h, and compares it with the first liquid level height threshold value h1, the second liquid level height threshold value h2 and the third liquid level height threshold value h3, wherein h1, h2 and h3 gradually increase, the height of the temperature sensor from the bottom of the second chamber is not greater than h1, and corresponding control is performed according to the comparison result:

[0030] 1.1) If h is not greater than h1, the temperature sensor does not need to be turned on for detection, and the sewage assembly does not work;

[0031] 1.2) If h>h1, the temperature sensor starts to detect, and step 2) is entered;

[0032] 2) Determine whether h is greater than h2 and h3, and perform corresponding control according to the comparison result:

[0033] 2.1) If h1 < h < h2, the temperature sensor detects the real-time temperature of the sewage in the second chamber as T, and compares it with the preset temperature threshold Tp, to determine whether T ≥ Tp is true, if yes, the driving mechanism is started to rotate the rotating shaft and the stirring part for a preset time t1, and then the driving mechanism is controlled to move upward together with the rotating shaft and the blocking piece to rise, so that the sewage is discharged from the drain pipe; if no, the next time the range hood is cleaned, the sewage is discharged;

[0034] 2.2) If h2 < h < h3, the temperature sensor detects the real-time temperature of the sewage in the second chamber as T, and compares it with the preset temperature threshold Tp, to determine whether T ≥ Tp is true, if yes, step 2.2.1) is entered; if no, according to the cleaning time of the range hood, it is determined whether the sewage needs to be discharged, when it needs to be discharged, the heating module in the water tank is started until T ≥ Tp, and then step 2.2.1) is entered;

[0035] 2.2.1) The driving mechanism is started to rotate the rotating shaft and the stirring part for a preset time t2, and then the driving mechanism is controlled to move upward together with the rotating shaft and the blocking piece to rise, so that the sewage is discharged from the drain pipe;

[0036] 2.3) If h > h3, the temperature sensor detects the real-time temperature of the sewage in the second chamber as T, and compares it with the preset temperature threshold Tp, to determine whether T ≥ Tp is true, if yes, step 2.3.1) is entered; if no, the heating module (38) in the water tank is started until T ≥ Tp, and then step 2.3.1) is entered;

[0037] 2.3.1) The driving mechanism is started to rotate the rotating shaft and the stirring part for a preset time t3, and then the driving mechanism is controlled to move upward together with the rotating shaft and the blocking piece to rise, so that the sewage is discharged from the drain pipe;

[0038] The time of rotation of the rotating shaft satisfies t3 > t2 > t1.

[0039] Preferably, in step 2.2), according to the cleaning time of the range hood, it is determined whether the sewage needs to be discharged, which includes the following steps: it is determined whether the last cleaning time of the range hood is greater than a preset time, if yes, the sewage is discharged after the next time the range hood is cleaned, if no, the sewage needs to be discharged.

[0040] Preferably, in order to avoid the influence of detection errors on normal sewage discharge, when it is determined that the sewage needs to be discharged, before the heating module in the water tank is started, it is determined whether satisfies ΔT ≤ n, if yes, the temperature is detected after the next time the range hood is cleaned, if no, the heating module in the water tank is started; wherein n is a preset temperature difference threshold.

[0041] Compared with the prior art, the advantages of the present application are that: 1) the raised water tank structure is arranged at the rear side position of the cooking appliance, which not only enhances the integrity of the whole machine while meeting the cleaning requirements, but also reduces the oil accumulation space at the rear side of the cooking appliance, especially reduces the oil accumulation caused by multiple gaps at the rear side of the cooking appliance, and facilitates cleaning; 2) the water tank and the cooking appliance are arranged in an integrated structure, which solves the problem that the cooking appliance installed on the cabinet body will generate a gap with the rear end countertop, which will easily accumulate oil over time and is difficult to clean; 3) the cleaning medium is heated by the waste heat of the cooking appliance, which can reduce the energy consumption of the heating module, prolong the service life of the heating module, and reduce the manufacturing cost; the sewage discharge chamber is arranged at the rear side of the water storage chamber, which saves the oil cup and can utilize the heat in the front side water storage chamber to increase the flowability of the oil stain in the sewage discharge chamber, so that the pipeline is not easy to be blocked; the anti-blocking mechanism is arranged in the sewage discharge chamber, and whether the sewage can be discharged is judged according to the change of the temperature and the liquid level, so that the sewage discharge is accurately controlled. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 A schematic view of an integrated cooking appliance according to an embodiment of the present application;

[0043] Figure 2 A schematic view of a cabinet body of an integrated cooking appliance according to an embodiment of the present application;

[0044] Figure 3 A partial schematic view of a cooking body and a cleaning device of an integrated cooking appliance according to an embodiment of the present application;

[0045] Figure 4 A schematic view of a cooking body of an integrated cooking appliance according to an embodiment of the present application;

[0046] Figure 5 A partial sectional view of Figure 4 ;

[0047] Figure 6 A partial I enlarged schematic view of Figure 5 ;

[0048] Figure 7 A schematic view of a joint of an energy collecting ring of a cooking body of an integrated cooking appliance according to an embodiment of the present application;

[0049] Figure 8 A partial sectional view of a cleaning device of an integrated cooking appliance according to an embodiment of the present application;

[0050] Figure 9 A schematic view of a sewage discharge assembly of a cleaning device of an integrated cooking appliance according to an embodiment of the present application;

[0051] Figure 10 A non-working state sectional view of a sewage discharge assembly of a cleaning device of an integrated cooking appliance according to an embodiment of the present application;

[0052] Figure 11 Flow chart of the control method of the integrated cooking appliance according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or similar components have the same or similar designations and functions.

[0054] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. Since the disclosed embodiments of the present application can be arranged in different directions, these orientation-indicating terms are only illustrative and should not be regarded as limiting. For example, "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity. In addition, the features defined as "first", "second" can explicitly or implicitly include one or more of the features.

[0055] Referring to Figures 1-4 An integrated cooking appliance includes an extractor hood 1 and a cooktop 2, wherein the extractor hood 1 includes an air inlet assembly 11 and a fan frame 12 arranged above the air inlet assembly 11, the fan frame 12 is internally arranged for a fan system (not shown), and the air inlet assembly 11 is provided with an air inlet 111. The air inlet assembly 11 and the fan frame 12 internally form a fluid communication cavity, and the extractor hood can also adopt other forms, such as the existing side suction type, low suction type, etc. The cooktop 2 is arranged below the extractor hood 1, and includes a cabinet 21 and a cooktop 22 arranged on the top of the cabinet 21.

[0056] The integrated cooking appliance further includes a cleaning device, which includes a water tank 31 arranged between the cooktop 2 and the extractor hood, a first water inlet pipe 32, a drain pipe 33 and a second water inlet pipe 34 Figure 8). One end of the first water inlet pipe 32 is connected to the water tank 31 and is in fluid communication with the water tank 31, and the other end of the first water inlet pipe 32 is connected to a water pipe. Other cleaning medium such as cleaning agent can also be introduced into the first water inlet pipe 32. One end of the drain pipe 33 is connected to the bottom of the water tank 31 and is in fluid communication with the water tank 31, and the other end of the drain pipe 33 is connected to a sewer, and the drain pipe 33 extends longitudinally. One end of the second water inlet pipe 34 is connected to the water tank 31 and is in fluid communication with the water tank 31, and the other end of the second water inlet pipe 34 extends into the inner cavity of the range hood 1, and it serves as a supply pipe of cleaning medium (including water, cleaning agent, etc.) and can be combined with a common cleaning mechanism such as a nozzle to clean the inner cavity of the range hood 1, including cleaning the fan system, filter screen, etc. An electromagnetic three-way valve can be provided on the upper end of the water tank 31, so that the water outlet is divided into two paths, one of which is the above-mentioned second water inlet pipe 34, and the other of which can be used to supply hot water, which can be used for washing dishes, pots, etc.

[0057] The cleaning device also includes a pipeline that can be arranged through the cooktop 22 and connected to the water tank 31, so as to collect the residual heat of the cooktop 22 and exchange the residual heat with the water entering the water tank 31. The cooktop 22 includes a cooktop panel 221, cooktop heads 222 arranged on the cooktop panel 221, and a rotary knob switch 223. An energy collection ring 224 is arranged around the outer periphery of each cooktop head 222 to reflect the heat generated by the cooktop head 222 and improve the heating efficiency. The cooktop head 222 has two cooktop heads arranged left and right, and the switch 223 and the energy collection ring 224 have corresponding two.

[0058] The first water inlet pipe 32 is located substantially in the cabinet 21, and the lower end thereof extends out of the cabinet 21 for connection with a water pipe. A water inlet valve 35 and a water outlet valve 36 are arranged below the cooktop panel 221. The first water inlet pipe 32 extends from bottom to top to the input end of the water inlet valve 35, and the output end of the water outlet valve 36 is selectively communicated with the water tank 31. Preferably, the water inlet valve 35 and the water outlet valve 36 can both be electromagnetic valves.

[0059] The heat exchange pipeline includes first pipes 371 and second pipes 372, and each of the first pipes 371 and the second pipes 372 has two, and each group of the first pipes 371 and the second pipes 372 is used to correspond to the one side of the cookers 222, the switches 223 and the energy gathering rings 224. One end of each of the first pipes 371 is connected with the water inlet valve 35, and after extending from the output end of the water inlet valve 35, the first pipes 371 firstly coil through the bottom of the cookers 222, then extend below and coil below the switches 223, and then extend to the energy gathering rings 224. The energy gathering rings 224 have a hollow shape, and the first pipes 371 are in fluid communication with the inside of the energy gathering rings 224. One end of the second pipes 372 is connected with the energy gathering rings 224 and is in fluid communication with the inside of the energy gathering rings 224, and the other end of the second pipes 372 is connected with the input end of the water outlet valve 36. The connection of each of the first pipes 371 and the second pipes 372 with the energy gathering rings 224 can be centrally symmetrically arranged relative to the bottom of the energy gathering rings 224. Since the user may be scalded at the switches 223 during use, the heat exchange at the switches 223 can reduce the temperature of the switches 223 to prevent scalding. In addition, the temperature in the energy gathering rings 224 is relatively high, so the water from the first water inlet pipe 32 can effectively improve the temperature of the cleaning medium in the water tank 31 and reduce energy consumption after passing through the energy gathering rings 224 and then passing through the water outlet valve 36 into the water tank 31.

[0060] When the first water inlet pipe 32 supplies water to the water inlet valve 35, the temperature sensor can be used to detect whether the left cooker 222 or the right cooker 222 is working, and then the water inlet valve 35 is connected with the first pipe 371 of the corresponding side.

[0061] Referring to Figures 5-7Since the user will have soup and other liquids spilled on the energy gathering ring 224 during cooking, it needs to be cleaned frequently, therefore, the energy gathering ring 224 and the cooktop panel 221, the first conduit 371, the second conduit 372 are detachably connected. The bottom of the cooktop panel 221 is provided with a connecting pipe 2211, and the bottom of the energy gathering ring 224 is made of ferromagnetic material, a ring-shaped first electromagnet 225 is arranged below the cooktop panel 221 corresponding to the position of the energy gathering ring 224, and the ends of the first conduit 371 and the second conduit 372 are respectively inserted into the corresponding connecting pipe 2211. The bottom of the energy gathering ring 224 has a joint 2241 which is tightly matched with the connecting pipe 2211 and located above the end of the first conduit 371 or the second conduit 372, thereby connecting the first conduit 371 and the inside of the energy gathering ring 224, and the second conduit 372 and the inside of the energy gathering ring 224. The outer periphery of the joint 2241 is provided with a sealing ring 2242, thereby avoiding leakage when water enters from the first conduit 371 or water is discharged from the second conduit 372. Thus, through the plug-in mode, the energy gathering ring 224 and the cooktop panel 221, the first conduit 371, the second conduit 372 are detachably connected.

[0062] The end of the joint 2241 towards the first conduit 371 or the second conduit 372 is formed with a rounded structure, thereby having a good guiding effect. The middle position of the joint 2241 is tapered, and the sealing ring 2242 is arranged at the position with the smallest size, thereby reducing the friction resistance with the rubber material inside the connecting pipe 2211. When the energy gathering ring 224 is inserted into position, the sealing ring 2242 will form a seal with the rubber material inside the connecting pipe 2211, and when it is inserted into position, the first electromagnet 225 will be energized to firmly fix the energy gathering ring 224 on the cooktop panel 221, and in the case of pressure in the pipeline, it will not leak, realizing sealing.

[0063] When the user needs to clean the energy gathering ring 224, the first electromagnet 225 can be controlled to be de-energized, and then the energy gathering ring 224 can be pulled out. When the energy gathering ring 224 is cleaned, the joint 2241 of the energy gathering ring 224 needs to be inserted into the connecting pipe 2211 according to the position of the connecting pipe 2211, since the sealing ring 2242 can play a sealing role, and when the energy gathering ring 224 is inserted, the first electromagnet 225 will continue to be energized to tightly fix the energy gathering ring 224 on the cooktop panel 221, preventing a large water pressure from being generated when the water inlet valve 35 is connected, causing water leakage.

[0064] The water tank 31 is located above the rear side of the cabinet 21, so that a gap is avoided between the cooktop 2 and the countertop of the kitchen after installation, facilitating cleaning. The water tank 31 is provided with a partition plate 313, so that the water tank 31 is divided into a first chamber 311 and a second chamber 312 arranged in front and back. The first chamber 311 is located at the front side, and the second water inlet pipe 34 and the output end of the water outlet valve 36 are both in communication with the first chamber 311. The first chamber 311 is used for storing cleaning medium, and the cleaning medium such as water or cleaning agent from the first water inlet pipe 32 can enter the first chamber 311 and then enter the second water inlet pipe 34, so as to perform cleaning work. The first chamber 311 is provided with a heating module 38 Figure 8 ) for heating the cleaning medium to improve the cleaning effect.

[0065] Referring to Figures 8-10 , the bottom of the air inlet assembly 11 is provided with a drain port 112, and the second chamber 312 is located below the air inlet assembly 11. The second chamber 312 is open at a position corresponding to the drain port 112, so that the air inlet assembly 11 is in fluid communication with the second chamber 312 through the drain port 112. The second chamber 312 serves as an oil and wastewater collection chamber. During use of the range hood 1, oil stains generated during use of the range hood 1 flow into the second chamber 312 through the drain port 112. Because the waste oil has high viscosity and poor flowability, the second chamber 312 can be provided with a drain assembly to prevent the second chamber 312 and the drain pipe 33 from being blocked.

[0066] The drain assembly includes a blocking piece 391, a temperature sensor 392, a rotating shaft 393, a stirring component 394, a driving mechanism 395, a liquid level sensor 396, an elastic piece 397, a guide column 398, and a second electromagnet 399. The blocking piece 391 can include a conical portion, and the size of the conical portion gradually decreases from top to bottom. The maximum size of the blocking piece 391 is greater than the size of the inlet of the drain pipe 33 (the connection position with the water tank 31), so that the inlet of the drain pipe 33 can be blocked. The temperature sensor 392 can be arranged at the top of the blocking piece 391. The second electromagnet 399 is fixed at or near the top of the second chamber 312. The driving mechanism 395 is fixed at the bottom of a fixed plate 3951. The guide column 398 is fixed with the second electromagnet 399 and passes through the fixed plate 3951 and slides with respect to the fixed plate 3951, so as to guide the movement of the fixed plate 3951. The elastic piece 397 is arranged at the outer periphery of the guide column 398, and the upper end of the elastic piece 397 is connected with the second electromagnet 399, and the lower end of the elastic piece 397 is connected with the fixed plate 3951. The bottom of the fixed plate 3951 can be provided with the liquid level sensor 396.

[0067] The output end of the driving mechanism 395 is connected with a rotating shaft 393, which extends in the longitudinal direction, and the lower end of the rotating shaft 393 is connected with the blocking piece 391, and the driving mechanism 395 can drive the rotating shaft 393 to rotate around the axis thereof. The stirring part 394 is arranged on the outer periphery of the rotating shaft 393, and when the rotating shaft 393 rotates, the stirring part 394 can stir the sewage (including the oil-water mixture of waste oil, cleaned waste water, etc.) in the second chamber 312. In the embodiment, the driving mechanism 395 is preferably an electric motor. The stirring part 394 is preferably a blade, and alternatively, the stirring part 394 can also be a steel ring or the like, as long as it is a part capable of stirring fluid.

[0068] Therefore, when the sewage discharge assembly is not working, the second electromagnet 399 is powered off, and under the action of the elastic member 397, the fixed plate 3951 moves downward along the guide column 398, so that the blocking piece 391 moves downward under the driving of the driving mechanism 395 and the rotating shaft 393, thereby blocking the inlet of the drain pipe 33. When sewage needs to be discharged, the second electromagnet 399 is powered on, and the elastic member 397 is attracted to compress the elastic member 397, so that the fixed plate 3951 moves upward, and the blocking piece 391 moves upward, so that the second chamber 312 and the drain pipe 33 are in fluid communication, thereby realizing the function of discharging sewage.

[0069] The first chamber 311 and the second chamber 312 can transfer heat by heat conduction and radiation.

[0070] Referring to Figure 11 The control method flow chart of the integrated cooking utensil is mainly used for controlling the sewage discharge assembly, and specifically includes the following steps:

[0071] 1) After starting, the liquid level sensor 396 on the fixed plate 3951 first detects the liquid level of the sewage in the second chamber 312 in real time, obtains the current liquid level height h, and compares it with the first liquid level height threshold value h1, the second liquid level height threshold value h2 and the third liquid level height threshold value h3, wherein h1, h2 and h3 gradually increase, the height of the temperature sensor 392 from the bottom of the second chamber 312 is not greater than h1, and the height of the driving mechanism 395 from the bottom of the second chamber 312 is h3, and the corresponding control is performed according to the comparison result:

[0072] 1.1) If h is not greater than h1, the temperature sensor 392 does not need to be started to detect, and the sewage discharge assembly;

[0073] 1.2) If h > h1, the temperature sensor 392 is started to detect, and step 2) is entered;

[0074] 2) It is judged whether h > h2 is true, if yes, step 3) is entered, and if no, step 14) is entered;

[0075] 3) judge whether h > h3 is true, if true, go to step 4), if false, go to step 8);

[0076] 4) the temperature sensor 392 detects the real-time temperature of the sewage as T, compares it with the preset temperature threshold Tp, judges whether T ≥ Tp is true, if true, go to step 6), if false, go to step 5);

[0077] 5) start the heating module 38 in the water tank 31, the first chamber 311 is heated, thereby the second chamber 312 is also heated, after heating for a preset time, detect the real-time temperature T again through the temperature sensor 392, compare it with the preset temperature threshold Tp, judge whether T ≥ Tp is true, if true, go to step 6), if false, repeat this step; Tp is the temperature at which the sewage is easy to flow, generally 40-50℃;

[0078] 6) start the driving mechanism 395, so that the rotating shaft 393 rotates for a preset time t3, that is, the stirring component 394 rotates synchronously for the time t3;

[0079] 7) make the second electromagnet 399 energized, the driving mechanism 395 moves upward together with the rotating shaft 393 and the blocking piece 391, so that the sewage can be discharged from the drain pipe 33;

[0080] 8) if the cleaning time interval is short, the cooking waste oil may be excessive, therefore, detect the real-time temperature T through the temperature sensor 392, compare it with the preset temperature threshold Tp, judge whether T ≥ Tp is true, if true, go to step 9), if false, go to step 10);

[0081] 9) start the driving mechanism 395, so that the rotating shaft 393 rotates for a preset time t2, then make the second electromagnet 399 energized, the driving mechanism 395 moves upward together with the rotating shaft 393 and the blocking piece 391, so that the sewage can be discharged from the drain pipe 33;

[0082] 10) judge whether the cleaning time of the last range hood 1 is greater than a preset time, such as 20 days, if true, wait for the next time of cleaning the range hood to discharge the sewage, if false, go to step 11);

[0083] 11) judge whether the size of satisfies ΔT ≤ n, if true, wait for the next time of cooking to detect the temperature, if false, go to step 12); n is a preset temperature difference threshold, which is 5% in this embodiment;

[0084] 12) start the heating module 38 in the water tank 31, then the temperature sensor 392 detects the real-time temperature T, compares it with the preset temperature threshold Tp, and judges whether T≥Tp is true, if yes, go to step 13), if not, repeat this step;

[0085] 13) start the driving mechanism 395, so that the rotating shaft 393 rotates for a preset time t2, then the second electromagnet 399 is energized, and the driving mechanism 395 moves upward together with the rotating shaft 393 and the blocking piece 391, so that the sewage can be discharged from the drain pipe 33;

[0086] 14) the temperature sensor 392 detects the real-time temperature T of the sewage, compares it with the preset temperature threshold Tp, and judges whether T≥Tp is true, if yes, go to step 15), if not, go to step 16);

[0087] 15) start the driving mechanism 395, so that the rotating shaft 393 rotates for a preset time t1, then the second electromagnet 399 is energized, and the driving mechanism 395 moves upward together with the rotating shaft 393 and the blocking piece 391, so that the sewage can be discharged from the drain pipe 33;

[0088] 16) wait for the next time the range hood 1 is cleaned before discharging the sewage.

[0089] In the above control method, t3>t2>t1, the lower the liquid level, the shorter the stirring time.

[0090] This method detects the sewage to a certain temperature, then fully stirs the sewage, and then the blocking piece 391 rises to discharge the sewage, which can greatly reduce the risk of oil blocking the drain pipe 33.

[0091] In this embodiment, the second electromagnet 399 is used to realize the lifting of the blocking piece 391, and other linear driving modules in the prior art, such as electric push rods, can also be used.

[0092] The "fluid communication" referred to in the present application refers to the spatial positional relationship between two components or parts (hereinafter collectively referred to as first part and second part), i.e. the fluid (gas, liquid or mixture of the two) can flow or / and be transported from the first part to the second part along the flow path, which can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing fluid flow or a combination thereof.

Claims

1. An integrated cooking appliance comprising an extractor hood (1), a cooktop (22) located below the extractor hood (1), and a cleaning device, the extractor hood (1) comprising an air inlet assembly (11); characterized in that: The cleaning device comprises a water tank (31) arranged at the rear side of the stove (22), the water tank (31) is arranged between the range hood (1) and the stove (22), and the water tank (31) and the stove (22) are integrally formed; a first chamber (311) for containing cleaning medium for cleaning the range hood (1) is formed in the water tank (31); The water tank (31) is provided with a partition plate (313), thereby separating the water tank (31) into a first chamber (311) and a second chamber (312) arranged in front and back, a bottom of the air inlet assembly (11) is provided with a blow-off port (112), the range hood (1) is in fluid communication with the second chamber (312) through the blow-off port (112), and the cleaning device further comprises a drain pipe (33) for being in fluid communication with the second chamber (312) and a sewer, respectively.

2. The integrated cooking appliance of claim 1, wherein: The cleaning device further comprises a first water inlet pipe (32) and a second water inlet pipe (34), the first water inlet pipe (32) is used for being connected to a cleaning medium source and the first chamber (311), respectively, the second water inlet pipe (34) is connected to the first chamber (311) and is in fluid communication, the second water inlet pipe (34) extends into the range hood (1), and the cleaning device further comprises a pipeline for heat exchange through the stove (22).

3. The integrated cooking appliance of claim 2, wherein: The stove (22) comprises a cooktop panel (221), a burner (222) and a switch (223) arranged on the cooktop panel (221), an energy collecting ring (224) is arranged at the outer periphery of the burner (222), and the pipeline for heat exchange further comprises a pipeline below the burner (222), the switch (223) and the energy collecting ring (224).

4. The integrated cooking appliance of claim 3, wherein: The cleaning device further comprises a water inlet valve (35) and a water outlet valve (36), the pipeline for heat exchange comprises a first conduit (371) and a second conduit (372), the first water inlet pipe (32) is connected to the input end of the water inlet valve (35), the first conduit (371) is connected to the output end of the water inlet valve (35), the first conduit (371) extends below the burner (222), the switch (223) and the energy collecting ring (224) in sequence, one end of the second conduit (372) is connected to the energy collecting ring (224), the other end of the second conduit (372) is connected to the input end of the water outlet valve (36), and the output end of the water outlet valve (36) is connected to the first chamber (311); the energy collecting ring (224) is in a hollow shape, and the first conduit (371) and the second conduit (372) are in fluid communication with the inside of the energy collecting ring (224), respectively.

5. The integrated cooking appliance of claim 4, wherein: The energy collecting ring (224) and the cooktop panel (221), the first conduit (371) and the second conduit (372) are detachably connected.

6. The integrated cooking appliance of claim 5, wherein: The bottom of the cooktop panel (221) is provided with a connecting pipe (2211), the end of the first conduit (371) and the second conduit (372) is respectively inserted into the corresponding connecting pipe (2211), the bottom of the energy focusing ring (224) is provided with a joint (2241), the joint (2241) is inserted into the connecting pipe (2211), and the joint (2241) is connected with the first conduit (371) and the inside of the energy focusing ring (224), and the second conduit (372) and the inside of the energy focusing ring (224) are in communication.

7. The integrated cooking appliance of claim 6, wherein: The joint (2241) is formed with a rounded structure towards one end of the first conduit (371) or the second conduit (372).

8. The integrated cooking appliance of claim 6, wherein: The outer periphery of the joint (2241) is provided with a sealing ring (2242).

9. The integrated cooking appliance of claim 8, wherein: The joint (2241) has a tapered portion, and the sealing ring (2242) is arranged at the smallest size of the tapered portion.

10. The integrated cooking appliance according to any one of claims 1 to 9, characterized in that: The first chamber (311) is provided with a heating module (38).

11. The integrated cooking appliance of claim 1, wherein: The second chamber (312) is provided with a sewage discharge assembly, and the sewage discharge assembly can be connected or disconnected between the second chamber (312) and the drain pipe (33).

12. The integrated cooking appliance of claim 11, wherein: The sewage discharge assembly comprises a sealing piece (391) driven by a linear drive module and capable of lifting, the sealing piece (391) comprises a conical portion, and the conical portion gradually reduces in size from top to bottom, and the maximum size of the sealing piece (391) is greater than the size of the inlet of the drain pipe (33), so that the inlet of the drain pipe (33) can be blocked when the sealing piece (391) is lowered.

13. The integrated cooking appliance of claim 12, wherein: The sewage discharge assembly further comprises a rotating shaft (393), a driving mechanism (395) and a stirring component (394), the rotating shaft (393) extends longitudinally, the driving mechanism (395) drives the rotating shaft (393) to rotate around its axis, the sealing piece (391) is arranged at the lower end of the rotating shaft (393), and the stirring component (394) is arranged on the outer periphery of the rotating shaft (393); the linear drive module drives the sealing piece (391), the rotating shaft (393), the driving mechanism (395) and the stirring component (394) to lift integrally.

14. The integrated cooking appliance of claim 13, wherein: The sewage discharge assembly further comprises a fixed plate (3951), the linear drive module is a second electromagnet (399), the driving mechanism (395) is fixed to the bottom of the fixed plate (3951), the second electromagnet (399) is located above the fixed plate (3951), the fixed plate (3951) is connected with the second electromagnet (399) through an elastic member (397), and the fixed plate (3951) has a downward movement tendency.

15. The integrated cooking appliance of claim 13 or 14, wherein: The cleaning device further comprises a temperature sensor (392) and a liquid level sensor (396), the first chamber (311) of the water tank (31) is provided with a heating module (38), and the temperature sensor (392) is arranged on the sealing piece (391).

16. The control method of the integrated cooking appliance according to claim 15, characterized in that: The method comprises the following steps: The method comprises the following steps: 1) After starting, the liquid level sensor (396) detects the liquid level in the second chamber (312) in real time to obtain the current liquid level height h, and compares it with the preset first liquid level height threshold h1, second liquid level height threshold h2 and third liquid level height threshold h3, wherein h1, h2 and h3 gradually increase, the height of the temperature sensor (392) from the bottom of the second chamber (312) is not greater than h1, and corresponding control is performed according to the comparison result: 1.1) If h is not greater than h1, the temperature sensor (392) does not need to start detection, and the pollution discharge assembly does not work; 1.2) If h > h1, the temperature sensor (392) starts detection, and enters step 2); 2) Determine whether h is greater than h2 and h3, and perform corresponding control according to the comparison result: 2.1) If h1 < h ≤ h2, the temperature sensor (392) detects the real-time temperature T of the sewage in the second chamber (312), and compares it with the preset temperature threshold Tp to determine whether T ≥ Tp is true, if yes, the driving mechanism (395) is started to rotate the rotating shaft (393) and the stirring part (394) for a preset time t1, and then the driving mechanism (395) is controlled to move upward together with the rotating shaft (393) and the blocking piece (391) to rise, so that the sewage is discharged from the drain pipe (33); if not, wait for the next time the range hood (1) is cleaned to discharge the sewage; 2.2) If h2 < h ≤ h3, the temperature sensor (392) detects the real-time temperature T of the sewage in the second chamber (312), and compares it with the preset temperature threshold Tp to determine whether T ≥ Tp is true, if yes, enter step 2.2.1); if not, determine whether the sewage needs to be discharged according to the cleaning time of the range hood (1), and when it needs to be discharged, start the heating module (38) in the water tank (31) until T ≥ Tp, and then enter step 2.2.1); 2.2.1) Start the driving mechanism (395) to rotate the rotating shaft (393) and the stirring part (394) for a preset time t2, and then control the driving mechanism (395) to move upward together with the rotating shaft (393) and the blocking piece (391) to rise, so that the sewage is discharged from the drain pipe (33); 2.3) If h > h3, the temperature sensor (392) detects the real-time temperature T of the sewage in the second chamber (312), and compares it with the preset temperature threshold Tp to determine whether T ≥ Tp is true, if yes, enter step 2.3.1); if not, start the heating module (38) in the water tank (31) until T ≥ Tp, and then enter step 2.3.1); 2.3.1) Start the driving mechanism (395) to rotate the rotating shaft (393) and the stirring part (394) for a preset time t3, and then control the driving mechanism (395) to move upward together with the rotating shaft (393) and the blocking piece (391) to rise, so that the sewage is discharged from the drain pipe (33); The rotating time of the rotating shaft (393) satisfies t3 > t2 > t1. 17.The control method of the integrated cooking appliance of claim 16, wherein: In step 2.2), whether the sewage needs to be discharged is judged according to the cleaning time of the range hood (1), including the following steps: judging whether the last cleaning time of the range hood (1) is greater than the preset time, if yes, waiting for the next time of cleaning the range hood (1) to discharge the sewage, if no, it is necessary to discharge the sewage. 18.The control method of the integrated cooking appliance of claim 17, wherein: When it is judged that the sewage needs to be discharged, before starting the heating module (38) in the water tank (31), it is judged the size of the temperature difference, if it satisfies ΔT≤n, the temperature is detected again after the next cooking, if it does not satisfy ΔT≤n, the heating module (38) in the water tank (31) is started; wherein n is a preset temperature difference threshold.

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