Inner circulation integrated range hood and its control method

Abstract

The present invention relates to an internal circulation integrated cooking stove and a control method thereof. The integrated cooking stove includes: a cabinet body; an oil fume suction device; an oil cup; an oil fume purification device having a flue gas inlet for communicating with the air outlet of the air box device and an exhaust port for discharging the purified gas; an exhaust air duct connected to the exhaust port of the oil fume purification device, and the air outlet of the exhaust air duct communicates with the interior of the room; at least a part of the internal space of the oil cup is located on the flow path of the exhaust air duct to allow the air flow purified by the oil fume purification device to be discharged into the room through the internal space of the oil cup. On the basis of the internal circulation integrated cooking stove, the purified air flow discharged from the oil fume purification device evaporates and dries the water in the oil cup (the oil liquid is generally an oil-water mixture with a large proportion of water). After the evaporated water is carried away by the air flow, only the oil liquid with a higher concentration remains in the oil cup. Therefore, the oil cup is not easily filled, and the frequency of the user cleaning the oil cup is reduced.

Description

Technical Field

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

[0002] An integrated stove is a kitchen appliance that integrates multiple functions such as an oil fume suction device, a gas stove, a disinfection cabinet, a steam oven, a storage cabinet, etc., and has the advantages of saving space, good oil fume extraction effect, energy saving, low consumption, and environmental protection. The integrated stove generally adopts an oil fume suction method of upper suction and lower discharge. The integrated stove includes a stove cabinet, a stove top located at the top of the stove cabinet, and a machine head located at the rear side of the top of the stove cabinet. An air intake duct and an air inlet for allowing external smoke to enter the air intake duct are provided on the machine head. A stove cabinet is provided below the stove top. A blower box is provided in the stove cabinet, a blower is provided in the blower box, an exhaust duct is provided below the blower box, the blower box is connected to the air intake duct of the machine head, and the exhaust duct is externally connected to the common flue of the kitchen.

[0003] In order to avoid discharging smoke into the common flue, there is currently an internal circulation integrated stove. For example, a Chinese invention patent application with the application number CN190.0 (the application publication number is CN1125336A) discloses an integrated stove. The integrated stove includes a stove cabinet and a smoke collecting hood provided on the top of the stove cabinet. An exhaust duct communicating with the smoke collecting hood is provided in the stove cabinet, and a filtering device is provided at the air outlet of the exhaust duct. The filtering device is provided on the stove cabinet. By providing a filtering device on the exhaust duct, the filtering device can filter the oil fume discharged from the exhaust duct, so that the exhaust duct can directly discharge the purified air to the indoor through the air outlet of the exhaust duct on the stove cabinet. The purified air is reused by the smoke collecting stove, so that the smoke collecting stove realizes the use of air in the indoor cycle, and the exhaust duct does not need to be connected to the common flue, avoiding the blockage of the exhaust duct for smoke exhaust.

[0004] The oil fume in the above-mentioned patent application for the integrated stove is directly discharged into the room after being filtered by the filtering device, without making full use of the purified smoke gas flow. On the other hand, during the suction and exhaust process of the integrated stove, the oil fume is intercepted through physical principles such as inertial collision (such as setting an oil mesh), and the collected oil stains are introduced into the oil cup. The amount of oil stains generated during frying and stir-frying cooking is limited, and generally the volume of the oil cup is sufficient for normal use of the integrated stove for one or two months without emptying the oil cup. When the user performs stewing cooking, a large amount of steam generated by the boiling of the soup in the pot enters the integrated stove and is condensed in the integrated stove and then introduced into the oil cup, resulting in the situation that the oil cup is filled with condensed water in a short time, causing the user's trouble of frequently emptying the waste liquid in the oil cup. In particular, due to the special structure of the integrated stove, the oil cup is set near the ground of the integrated stove, and the user needs to bend down when cleaning the oil cup, which is extremely inconvenient for older or taller users.

[0005] Therefore, the existing integrated stove still needs to be further improved. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide an internal circulation integrated range hood capable of effectively reducing the frequency of users cleaning the oil cup in view of the current situation of the prior art.

[0007] The technical solution adopted by the present invention to solve the above first technical problem is as follows:

[0008] An internal circulation integrated range hood, comprising:

[0009] A cabinet;

[0010] An oil fume suction device, including a blower box device arranged in the cabinet and a smoke inlet duct communicating with the air inlet of the blower box device, and a smoke inlet for external smoke to enter is formed in the upper part of the smoke inlet duct;

[0011] An oil cup, arranged on the cabinet, for receiving the oil liquid / oil-water mixture flowing down from the oil fume suction device;

[0012] An oil fume purification device, arranged in the cabinet, having a flue gas inlet for communicating with the air outlet of the blower box device and an exhaust port for discharging the purified gas;

[0013] An exhaust duct, connected to the exhaust port of the oil fume purification device, and the air outlet of the exhaust duct communicates with the room;

[0014] At least part of the internal space of the oil cup is located on the flow path of the exhaust duct, so as to allow the air flow purified by the oil fume purification device to be discharged into the room through the internal space of the oil cup.

[0015] In order to enable the air flow to pass through the internal space of the oil cup as much as possible and ensure the evaporation speed of the water in the oil cup, the exhaust duct includes a duct main body with an opening at the bottom, the top of the oil cup has an open mouth, the oil cup is detachably connected to the bottom opening of the duct main body, and the oil cup and the duct main body together form the exhaust duct.

[0016] In order to facilitate the installation and disassembly of the oil cup, the bottom of the cabinet has an oil cup installation groove for the oil cup to slide back and forth therein, and an installation opening is provided at the corresponding position of the front bottom of the cabinet corresponding to the oil cup installation groove. The oil cup is integrally strip-shaped and can be inserted into the oil cup installation groove or taken out of the oil cup installation groove through the installation opening.

[0017] In order to achieve the installation and cooperation between the air duct main body and the oil cup, and ensure the sealing performance of the connection position between the oil cup and the air duct main body in the state where the oil cup is assembled in place, the bottom opening of the air duct main body is a long strip shape that matches the shape of the top opening of the oil cup. The outer peripheral edge of the bottom opening of the air duct main body has a downward-extending limiting retaining edge, and the limiting retaining edge is integrally in a U shape with an open front. In the state where the oil cup is installed in place in the oil cup installation groove, the edge of the top opening of the oil cup is in sealing contact with the limiting retaining edge.

[0018] In order to achieve the function of drying the ground, the front bottom of the cabinet body also has a kick plate extending in the left-right direction. The kick plate is distributed with ventilation holes, and the outlet of the exhaust air duct is opposite to each of the ventilation holes on the kick plate.

[0019] In order to guide the purified air flow to each ventilation hole on the kick plate on the premise of adapting to the installation of the oil cup to ensure that the moisture in the oil cup can be effectively evaporated, the exhaust air duct has guiding walls opposite to each other in the left-right direction at the outlet, and the distance between the two guiding walls gradually increases along the air flow path.

[0020] In order to introduce the converged oil liquid or oil-water mixture into the oil cup, the air duct main body is provided with a flow-through port at a position corresponding to the oil cup. A oil receiving tray is also provided in the cabinet body above the exhaust air duct, and the oil receiving tray is provided with an oil leakage hole at a position corresponding to the flow-through port of the air duct main body.

[0021] Generally, after the integrated range hood operates for a period of time, most of the oil-water mixture collected in the oil cup (there is more water vapor in the steaming mode, and more oil liquid in the frying and stir-frying modes). Among them, the oil layer is on the upper layer and the water layer is on the lower layer. In this case, although the oil layer on the upper layer is dispersed by the flowing air flow, to a certain extent, the evaporation effect of the moisture is increased. However, when the amount of the oil layer is relatively large, the evaporation effect of the moisture is not obvious. Therefore, a partition plate is provided inside the oil cup. The partition plate is correspondingly located below the flow-through port and divides the internal space of the oil cup into a water storage area and an oil storage area arranged in sequence along the air flow direction in the exhaust air duct.

[0022] A diversion plate that can be driven by a driving mechanism to deflect up and down relative to the air duct main body is also provided at the oil leakage hole of the oil receiving tray. The diversion plate has a first diversion state that inclines forward from top to bottom to divert the oil liquid to the oil storage area and a second diversion state that inclines backward from top to bottom to divert the oil-water mixture to the water storage area during the deflection process.

[0023] After the oil cup is partitioned into oil and water areas, since there is no or only a small amount of oil liquid residue in the water storage area, therefore, the air flow blown by the exhaust air duct can fully contact the water in the water storage area, improving the evaporation speed and ensuring the drying effect.

[0024] In order to effectively drain the oil or the oil-water mixture (where the majority in the oil-water mixture is water) to the corresponding oil storage area or water storage area, and avoid the leakage problem at the oil leakage hole causing cross-flow, the outer peripheral edge of the oil leakage hole of the oil receiving tray has an annular wall extending downward to below the oil passing port of the air duct main body. The internal space enclosed by the annular wall constitutes an activity cavity for placing the diversion plate. The middle parts of the left and right sides of the diversion plate are rotatably connected to the opposite side walls of the annular wall;

[0025] The diversion plate has a first side and a second side opposite to each other in the front-rear direction. The outer peripheral edge of the oil leakage hole also has an inwardly extending annular stop edge. When the diversion plate is in the first diversion state, the first side at the rear of the diversion plate abuts against the annular stop edge. When the diversion plate is in the second diversion state, the second side at the front of the diversion plate abuts against the annular stop edge.

[0026] In order to correspond and match with different cooking conditions of the integrated stove, so as to realize the automatic zoning of the oil or the oil-water mixture, it further includes a humidity sensor for detecting the humidity of the flue gas. The humidity sensor, the driving mechanism and the control system of the integrated stove are electrically connected, so that the control system of the integrated stove can control the action of the driving mechanism according to the flue gas humidity signal transmitted by the humidity sensor, and then adjust the diversion plate to an angular position adapted to the current flue gas humidity.

[0027] As an improvement, the top of the partition plate also has overflow holes arranged in sequence along the extension direction of the partition plate. Each of the overflow holes communicates the water storage area with the oil storage area. The setting of the above-mentioned overflow holes can be used to guide a small amount of oil floating on the upper surface of the water layer in the water storage area to the oil storage area. Specifically, although the water storage area is mainly used to store the water vapor in the steaming mode, the water vapor will inevitably carry some oil when flowing through the air duct of the integrated stove. Since the density of the oil itself is greater than that of water, this part of the oil often floats on the upper surface after standing. This part of the oil will gather near the oil baffle in the middle of the oil cup driven by the high-speed air flow and flow to the oil storage area through the overflow holes on the partition plate (when the water in the water storage cavity of this working condition reaches a certain liquid level height). In this way, a small amount of oil in the water storage area can also be separated under the action of the air flow.

[0028] In order to ensure the purification effect of the oil fume, the oil fume purification device includes a purification box and a filtering module arranged in the purification box body. The filtering module is at least one of an electrode plate electrostatic adsorption module and an activated carbon diaphragm adsorption module.

[0029] As an improvement, the oil fume suction device includes a machine head vertically arranged at the top of the cabinet body. The machine head divides the top area of the cabinet body into a first cooking area and a second cooking area respectively located on the front and rear sides of the machine head. A first air duct and a second air duct are defined on the machine head. The upper part of the first air duct forms a first smoke inlet facing the first cooking area, and the upper part of the second air duct forms a second smoke inlet facing the second cooking area. By setting two cooking areas on the front and rear sides of the machine head and corresponding two smoke inlets on the machine head, the operable cooking space of the integrated stove is effectively increased. Users can choose to perform cooking operations on one side according to actual needs, and it also allows more family members to perform multiple cooking operations simultaneously. Compared with the integrated stove with a single structure that can only cook on one side in the prior art, the kitchen space utilization rate of this integrated stove is higher, and it can better and more conveniently adapt to the existing open kitchen environment, improving the user experience.

[0030] To achieve a reasonable spatial arrangement of the oil fume purification device, the exhaust air duct, and the oil cup, the part of the cabinet body located in front of the machine head is denoted as the first cabinet body, and the part located behind the machine head is denoted as the second cabinet body. The oil fume purification device is arranged in the second cabinet body, the oil cup is arranged at the bottom of the first cabinet body, and the exhaust air duct is arranged at the bottom of the cabinet body and extends from the position where the second cabinet body is located to the front side of the bottom of the first cabinet body. By respectively arranging the oil cup and the oil fume purification device at the positions of the first cabinet body and the second cabinet body, it can effectively avoid the over-compact installation of the oil cup and the oil fume purification device, resulting in excessive turning of the exhaust air duct at the bottom of the cabinet body and affecting the smooth smoke exhaust of the exhaust air duct.

[0031] The technical solution adopted by the present invention to solve the above second technical problem is as follows:

[0032] A control method for an integrated stove includes the following steps:

[0033] S1. The integrated stove is started;

[0034] S2. The humidity of the current flue gas is obtained through a humidity sensor, and it is judged whether the humidity S of the current flue gas is greater than the set humidity value S0. If so, it is judged that the current flue gas component is mainly water vapor, and step S3 is entered; if not, it is judged that the current flue gas component is mainly oil fume, and step S4 is entered;

[0035] S3. The driving mechanism acts to drive the diversion plate to deflect to the second diversion state to divert the oil-water mixture to the water storage area of the oil cup;

[0036] S4. The driving mechanism acts to drive the diversion plate to deflect to the first diversion state to divert the oil liquid to the oil storage area of the oil cup.

[0037] Compared with the prior art, the advantages of the present invention are as follows: Based on the integrated range hood with an internal circulation, the purified air flow discharged from the oil fume purification device is used to evaporate and dry the water in the oil cup (the oil liquid is generally an oil-water mixture with a relatively large proportion of water). After the evaporated water is carried away by the air flow, only the oil liquid with a higher concentration remains in the oil cup. Therefore, the oil cup is not easily filled, and the frequency of the user cleaning the oil cup is reduced. In the preferred embodiment, after partitioning the oil cup into an oil area and a water area, the oil liquid or the oil-water mixture mainly composed of water can be respectively introduced into the oil storage area and the water storage area of the oil cup. In this way, since there is no or only a small amount of oil liquid residue in the water storage area, the air flow passing through the exhaust air duct can fully contact the water in the water storage area, improving the evaporation speed and ensuring the drying effect, and further reducing the frequency of the user cleaning the oil cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective structural view of the integrated range hood according to an embodiment of the present invention;

[0039] Figure 2 is a perspective structural view of the integrated range hood according to an embodiment of the present invention from another angle;

[0040] Figure 3 is a right view of the integrated range hood according to an embodiment of the present invention;

[0041] Figure 4 is a perspective structural view of the bottom of the integrated range hood according to an embodiment of the present invention;

[0042] Figure 5 is a perspective structural view of the integrated range hood according to an embodiment of the present invention with some structures omitted;

[0043] Figure 6 is a sectional perspective view of the oil fume extraction device and the oil fume purification device according to an embodiment of the present invention;

[0044] Figure 7 is a perspective structural view of the integrated range hood according to an embodiment of the present invention with some structures omitted;

[0045] Figure 8 is a perspective structural view of the cooperation between the oil drip tray, the exhaust air duct and the kick plate of the integrated range hood according to an embodiment of the present invention;

[0046] Figure 9 is Figure 8 exploded view of;

[0047] Figure 10 is Figure 8 sectional view at A-A in

[0048] Figure 11 is Figure 8 sectional view at A-A in

[0049] Figure 12 For Figure 8 The sectional view at A-A in [the figure] (the oil cup is in the state of being pulled outwards);

[0050] Figure 13 For Figure 11 The sectional perspective view at A-A in [the figure];

[0051] Figure 14 The perspective structural view of the oil cup of the embodiment of the present invention;

[0052] Figure 15 The sectional perspective view of the oil cup of the embodiment of the present invention. Specific embodiments

[0053] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0054] In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present invention. However, these terms are used here only for the purpose of convenience of description and are determined based on the example orientations shown in the drawings. Since the embodiments disclosed by the present invention can be arranged in different directions, these terms indicating directions should only be regarded as illustrative and not as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0055] Refer to Figures 1 - 15 , an internal circulation integrated stove includes a cabinet body 10 and a machine head 13 vertically arranged on the cabinet body 10. Among them, the machine head 13 is horizontally arranged at approximately the central position of the stove top on the top of the cabinet body 10, thereby dividing the top area of the cabinet body 10 into a first cooking area 110 and a second cooking area 120 respectively located on the front and rear sides of the machine head 13. Among them, a gas stove 181 is provided in the area corresponding to the first cooking area 110 on the top stove top of the cabinet body 10. The gas stove 181 has two burner heads, which are arranged in sequence in the left-right direction. An induction cooker 182 is provided in the area corresponding to the second cooking area 120 on the top stove top of the cabinet body 10. The induction cooker 182 also has two, which are arranged in sequence in the left-right direction. The induction cooker 182 and the gas stove 181 meet the different cooking needs of users.

[0056] The machine head 13 includes a first air duct 131 and a second air duct 132 that extend vertically. Among them, the first air duct 131 and the second air duct 132 are arranged side by side in the front-rear direction. The top opening of the first air duct 131 forms a first smoke inlet 141 facing the first cooking area 110. The top opening of the second air duct 132 forms a second smoke inlet 142 facing the second cooking area 120. More specifically, the machine head 13 includes a vertically arranged plate frame 130, and this plate frame 130 is used to separate the above-mentioned first air duct 131 and second air duct 132 in the front-rear direction.

[0057] The upper part of the plate frame 130 is higher than the above-mentioned first smoke inlet 141 and second smoke inlet 142. Specifically, the front side of the top of the plate frame 130 has a first smoke-blocking part 171 extending towards the first cooking area 110 above the first smoke inlet 141, and the rear side of the top of the plate frame 130 has a second smoke-blocking part 172 extending towards the second cooking area 120 above the second smoke inlet 142. The setting of the corresponding smoke-blocking parts can effectively reduce the escape of oil fume during the rising process, so that the oil fume can be quickly sucked into the corresponding first smoke inlet 141 and second smoke inlet 142.

[0058] See Figure 5 and Figure 6 As shown in, a wind box device 23 for sucking and exhausting oil fume is also provided in the cabinet 10. Specifically, the wind box device 23 is arranged in the middle area of the cabinet 10, and specifically includes a wind box body 231 and a centrifugal fan 232 arranged in the wind box body 231. The lower parts of the above-mentioned first air duct 131 and second air duct 132 are both communicated with the air inlet of the wind box body 231, that is, the above two air ducts share the same wind box device 23. The outlet of the wind box body 231 is connected to the oil fume purification device through a smoke pipe 24.

[0059] The part of the cabinet 10 in the present embodiment located in front of the machine head 13 (that is, corresponding to the first cooking area 110) is denoted as the first cabinet 11, and the part located behind the machine head 13 (that is, corresponding to the second cooking area 120) is denoted as the second cabinet 12. At least one of a steamer, a steam oven, an oven, a dishwasher, and a storage cabinet is provided in the front part of the first cabinet 11. Similarly, at least one of a steamer, a steam oven, an oven, a dishwasher, and a storage cabinet is provided in the rear part of the second cabinet 12. As Figure 1 shown, a steam oven 183 is provided in the front part of the first cabinet 11; as Figure 2 shown, a storage box 184 is provided in the rear part of the second cabinet 12.

[0060] The cabinet body 10 adopts a front-back partition design corresponding to the first cooking area 110 and the second cooking area 120, which means a larger installation space and can facilitate the user to arrange the corresponding steam oven, steam oven, oven, dishwasher and storage cabinet according to actual needs.

[0061] By setting two cooking areas on the front and back sides of the machine head 13 and two corresponding smoke inlets on the machine head 13, the operable cooking space of the integrated stove is effectively increased. The user can choose to perform cooking operations on one side according to actual needs, and it also allows more family members to perform multiple cooking operations simultaneously. Compared with the integrated stove with a single structure that can only cook on one side in the prior art, the kitchen space utilization rate of this integrated stove is higher, and it can better and more conveniently adapt to the existing open kitchen environment, improving the user experience.

[0062] The oil fume purification device includes a purification box 20 and a filtering module arranged in the body of the purification box 20. The filtering module is at least one of an electrode plate electrostatic adsorption module 21 and an activated carbon diaphragm adsorption module 22. The purification box 20 has a flue gas inlet for communicating with the air outlet of the air box device 23 and an exhaust port for discharging the purified gas. In this embodiment, the electrode plate electrostatic adsorption module 21 and the activated carbon diaphragm adsorption module 22 are arranged in sequence along the flow path in the purification box 20.

[0063] In this embodiment, the exhaust port of the air box device 23 is transported to the position of the kick plate 16 at the front bottom of the first cabinet body 11 through the exhaust air duct at the bottom of the cabinet body 10. Among them, the kick plate 16 extends in the left-right direction, and ventilation holes 160 are distributed thereon. After the purified gas is discharged through the ventilation holes 160 on the kick plate 16, it can be used to dry the ground of the kitchen.

[0064] During the operation of the oil fume suction device, the flue gas is discharged from the air box device 23, enters from the flue gas inlet of the purification box 20, and first passes through the electrode plate electrostatic adsorption module 21. The oil droplet particles in the oil fume become smaller and carry charges under the action of the ionization electrode. When the larger charged oil droplet particles continue to pass through the gap between the anode and cathode plates, due to the potential difference between adjacent plates, the particles deflect and are finally captured by the plates, and the flue gas is preliminarily purified. Then the flue gas passes through the activated carbon diaphragm adsorption module 22 in the middle of the outlet. The remaining small oil droplet particles and VOCs pollutants in the flue gas adhere to the surface of the activated carbon, and the flue gas is secondary purified. The purified clean air is discharged through the exhaust port to the exhaust air duct at the bottom of the integrated stove, and finally discharged through the ventilation holes 160 on the kick plate 16 and blown towards the ground, thus achieving the purpose of drying the ground at the bottom of the cabinet body 10 and the surrounding ground.

[0065] The bellow device 23 and the fume purification device of this embodiment are respectively located in the first cabinet 11 and the second cabinet 12. The fume purification device and the bellow device 23 of this embodiment are reasonably arranged in space within the front and rear two cabinets 10, without occupying the internal space of one cabinet 10, and also preventing the inner cavities of the boxes such as steam ovens and dishwashers in the cabinet 10 from being too small.

[0066] As Figure 4 shown, an important inventive point of this embodiment is that the air flow purified by the fume purification device is introduced into the internal space of the oil cup 40 to air-dry the water in the oil cup 40, that is, to accelerate the evaporation of the water in the oil cup 40 and reduce the pouring frequency of the user. Specifically, referring to Figure 1 , an oil cup 40 is provided at the bottom of the first cabinet 11. The oil cup 40 is integrally long and can be installed at the bottom of the first cabinet 11 in a push-pull manner. Specifically, the bottom of the first cabinet 11 has an oil cup installation groove 15 extending forward and backward, and an installation opening 150 corresponding to the oil cup installation groove 15 is provided at the middle position of the kickboard 16. The oil cup 40 can be loaded into the oil cup installation groove 15 through the installation opening 150, and can also be pulled out through the installation opening 150.

[0067] The exhaust air duct of this embodiment extends from the bottom of the second cabinet 12 (the fume purification device is located in the second cabinet 12) to the front side of the bottom of the first cabinet 11. Specifically, the exhaust air duct includes a duct main body 50. The part of the duct main body 50 corresponding to the first cabinet 11 also extends basically forward and backward and is located above the oil cup 40. The top of the oil cup 40 has an open mouth, and the bottom of the duct main body 50 has an opening at the position corresponding to the oil cup 40. The bottom opening of the duct main body 50 is a long strip shape matching the shape of the top open mouth of the oil cup 40. After the oil cup 40 is pushed backward in place (that is, in the state of being placed in place in the oil cup installation groove 15), the duct main body 50 and the oil cup 40 are covered to form the overall structure of the exhaust air duct. The outer peripheral edge of the bottom opening of the duct main body 50 has a downward extending limit retaining edge 51. The limit retaining edge 51 is integrally U-shaped with an open front. In the state where the oil cup 40 is installed in place in the oil cup installation groove 15, the edge of the top open mouth of the oil cup 40 is in sealing contact with the limit retaining edge 51, thereby ensuring the sealing performance of the contact position between the oil cup 40 and the duct main body 50 in the assembled state. The U-shaped limit retaining edge 51 also plays a limiting role on the left and right sides and the rear side of the oil cup 40. The bottom of the first cabinet 11 has an oil cup bracket 19. Among them, the oil cup bracket 19 is used to support the oil cup 40. The oil cup bracket 19 has a chute extending forward and backward for the front and back sliding restraint of the oil cup 40. After the oil cup bracket 19 is connected to the bottom of the first cabinet 11, it jointly defines the above-mentioned oil cup installation groove 15 with the first cabinet 11. For details, see Figure 9 .

[0068] In order to adapt to the length of the skirting board 16, the outlet of the exhaust air duct is provided with diversion walls 52 opposite to each other in the left-right direction, and the distance between the two diversion walls 52 gradually increases along the air flow path, so that the outlet of the exhaust air duct has a triangular horizontal cross section. The above design of the outlet structure of the exhaust air duct enables the purified air flow to be diverted to each ventilation hole 160 on the skirting board 16 on the premise of adapting to the installation of the oil cup 40 to ensure the effective evaporation of the moisture in the oil cup 40.

[0069] The installation structure of the oil cup 40 in this embodiment enables the internal space of the oil cup 40 to be introduced into the flow path of the exhaust air duct as much as possible. During the operation of the integrated stove, the purified air flow discharged from the oil fume purification device (at this time, the temperature of the air flow is relatively high) evaporates and dries the water in the oil cup 40 (the oil liquid is generally an oil-water mixture, and the proportion of water is relatively large). After the evaporated moisture is carried away by the air flow, only the oil liquid with a higher concentration remains in the oil cup 40. Therefore, the oil cup 40 is not easy to be full, reducing the frequency of the user cleaning the oil cup 40.

[0070] See Figure 7 and Figure 9 , an oil drip pan 30 for receiving the oil liquid / oil-water mixture dripping from the oil fume suction device is further provided in the first cabinet 11. The middle part of the oil drip pan 30 is concave, and an oil leakage hole 31 is opened at the bottommost part. The air duct main body 50 is located below the oil drip pan 30, and a flow-through hole is opened at a position corresponding to the oil leakage hole, and the oil cup 40 is located below the above-mentioned oil leakage hole 31. See Figure 10 , the bottom of the oil drip pan 30 is attached to the top of the air duct main body 50. The outer peripheral edge of the oil leakage hole 31 of the oil drip pan 30 has an annular wall 32 extending downward and exposing below the oil passing port of the air duct main body 50. In this way, the oil liquid or oil-water mixture collected on the oil drip pan 30 can flow into the oil cup 40 through the oil leakage hole and the flow-through hole of the air duct main body 50.

[0071] Generally, after the integrated stove operates for a period of time, most of the oil-water mixture collected in the oil cup 40 (there is more water vapor in the steaming mode, and more oil liquid in the frying and stir-frying modes). Among them, the oil layer is on the upper layer, and the water layer is on the lower layer. In this case, although the oil layer on the upper layer is blown away by the flowing air flow, which to a certain extent increases the evaporation effect of the water, when the amount of the oil layer is relatively large, the evaporation effect of the moisture is not obvious. Therefore, a partition plate 43 is provided inside the oil cup 40. The partition plate 43 is correspondingly located below the flow-through port 53 of the air duct main body 50, and divides the internal space of the oil cup 40 into two parts along the air flow direction in the exhaust air duct (such as Figure 9A water storage area 41 and an oil storage area 42 arranged in sequence (as shown by the hollow arrow in the middle) are provided, that is, the water storage area 41 located at the rear side and the oil outlet area located at the front side. After the oil cup 40 is partitioned into a water area and an oil area, since there is no or only a small amount of oil remaining in the water storage area 41, the air flow blown through the exhaust air duct can fully contact the water in the water storage area 41, improving the evaporation speed and ensuring the air drying effect.

[0072] The front side wall of the oil cup 40 also has a concave area that is successively recessed as a handle part 44 for the user to hold and take and place the oil cup 40. The top of the rear side of the front side wall of the oil cup 40 also has an oil-blocking convex edge 45 extending backward to ensure that the oil in the oil cup 40 is not blown out of the oil cup 40 by the air flow in the exhaust air duct. For details, see Figure 13 .

[0073] The internal space enclosed by the annular wall 32 at the oil leakage hole 31 of the oil receiving tray 30 forms a movable cavity, and a drainage plate 34 is provided in this movable cavity. Generally, the drainage plate 34 can be located directly above the partition plate 43 of the oil cup 40. However, considering the influence of the air flow on the dripping position of the falling liquid droplets, the position of the drainage plate 34 can be slightly behind the partition plate 43 of the oil cup 40.

[0074] A driving mechanism is also provided on the oil receiving tray 30. Specifically, the driving mechanism is a driving motor 35. The output shaft of the driving motor 35 passes through the annular wall 32 and is connected to the middle part of the side of the drainage plate 34. When the driving motor 35 rotates forward and backward, it can drive the drainage plate 34 to deflect up and down relative to the air duct main body 50. More specifically, the drainage plate 34 has a first diversion state and a second diversion state during the deflection process. In the first diversion state, the drainage plate 34 inclines forward from top to bottom to divert the oil to the oil storage area 42. For details, see Figure 10 ; in the second diversion state, the drainage plate 34 inclines backward from top to bottom, so that the oil-water mixture can be diverted to the water storage area 41. For details, see Figure 11 .

[0075] The drainage plate 34 has a first side edge 341 and a second side edge 342 that are opposite in the front-rear direction. Among them, the rear side edge of the drainage plate 34 is the first side edge 341, and the front side edge is the second side edge 342. Correspondingly, an annular retaining edge 33 that extends inward is also provided at the outer peripheral edge of the oil leakage hole 31. When the drainage plate 34 is in the first diversion state, the first side edge 341 located at the rear side of the drainage plate 34 abuts against the bottom wall of the annular retaining edge 33 to achieve sealing, thereby preventing oil from leaking from here and flowing into the water storage area 41 of the oil cup 40. A gap for the oil to flow downward is formed between the second side edge 342 located at the front side of the drainage plate 34 and the annular wall 32. Similarly, when the drainage plate 34 is in the second diversion state, the second side edge located at the front side of the drainage plate 34 abuts against the bottom of the annular retaining edge 33 to achieve sealing, thereby preventing oil from leaking from here and flowing into the oil storage area 42 of the oil cup 40. A gap for the oil to flow downward is formed between the first side edge located at the rear side of the drainage plate 34 and the annular wall 32.

[0076] The integrated cooking stove of this embodiment further includes a humidity sensor (not shown) for detecting the humidity of the flue gas. Among them, the humidity sensor, the driving mechanism, and the control system of the integrated cooking stove are electrically connected. The control system of the integrated cooking stove can control the driving mechanism to act according to the flue gas humidity signal transmitted by the humidity sensor, and then adjust the drainage plate 34 to an angular position adapted to the current flue gas humidity. Thus, when the integrated cooking stove is in different cooking conditions, the generated oil or oil-water mixture can be introduced into the corresponding oil storage area 42 or water storage area 41 of the oil cup 40 to achieve automatic zoning.

[0077] In this embodiment, the spatial sizes of the oil storage area 42 and the water storage area 41 of the oil cup 40 can be reasonably set according to actual needs. The top of the partition plate 43 of the oil cup 40 in this embodiment also has overflow holes 430 arranged in sequence along the extension direction of the partition plate 43. Each overflow hole 430 penetrates through in the front-rear direction to communicate the water storage area 41 with the oil storage area 42. Although the water storage area 41 is mainly used to store water vapor in the steaming mode, it is inevitable that the water vapor will carry some oil when flowing through the air duct of the integrated cooking stove. Since the density of the oil itself is greater than that of water, this part of the oil often floats on the upper surface after standing still. This part of the oil will gather near the oil retaining partition plate 43 in the middle of the oil cup 40 under the drive of the high-speed airflow and flow to the oil storage area 42 through the overflow holes 430 on the partition plate 43 (when the water in the water storage area 41 reaches a certain liquid level height). In this way, under the action of the airflow, a small amount of oil in the water storage area 41 can also be separated, ensuring the evaporation speed of the water in the water storage area 41.

[0078] The control method of the internal circulation integrated cooking stove of this embodiment includes the following steps:

[0079] S1. The integrated cooking stove is started;

[0080] S2. Obtain the humidity of the current flue gas through the humidity sensor, and determine whether the humidity S of the current flue gas is greater than the set humidity value S0. If so, determine that the current flue gas composition is mainly water vapor and enter step S3. If not, determine that the current flue gas composition is mainly oil fume and enter step S4;

[0081] S3. The driving mechanism operates to drive the diversion plate to deflect to the second diversion state to divert the oil-water mixture to the water storage area 41 of the oil cup 40;

[0082] S4. The driving mechanism operates to drive the diversion plate to deflect to the first diversion state to divert the oil liquid to the oil storage area 42 of the oil cup 40.

[0083] On the basis of the above embodiments, other embodiments can be obtained by replacing and improving relevant technical features. For example, only a partial area of the internal space of the oil cup can be introduced into the exhaust air duct. For example, the extending direction of the oil cup is perpendicular to the extending direction of the duct main body. Among them, after the oil cup is installed in place, only the space of its water storage area is opposite to the duct main body up and down, that is, only the water storage area of the oil cup is located on the flow path of the exhaust air duct.

Claims

1. An internal circulation integrated cooking stove, comprising: A cabinet (10); An oil fume suction device, including a bellows device (23) provided in the cabinet (10) and a smoke inlet duct communicating with the air inlet of the bellows device (23), and a smoke inlet for external smoke to enter is formed in the upper part of the smoke inlet duct; An oil cup (40), provided on the cabinet (10) for receiving the oil liquid / oil-water mixture flowing down from the oil fume suction device; An oil fume purification device, provided in the cabinet (10), having a smoke inlet for communicating with the air outlet of the bellows device (23) and an exhaust port for discharging the purified gas; It is characterized in that it further includes: An exhaust duct, communicating with the exhaust port of the oil fume purification device, and the air outlet of the exhaust duct communicates with the interior of the room; At least a part of the internal space of the oil cup (40) is located on the flow path of the exhaust duct, so as to allow the airflow purified by the oil fume purification device to be discharged into the room through the internal space of the oil cup (40).

2. The built-in circulation integrated cooking range according to claim 1, wherein: The exhaust duct includes a duct main body (50) with an opening at the bottom, the top of the oil cup (40) has an open mouth, the oil cup (40) is detachably connected to the bottom opening of the duct main body (50), and the oil cup (40) and the duct main body (50) together constitute the exhaust duct.

3. The integrated cooker with an internal circulation according to claim 2, characterized in that: The bottom of the cabinet (10) has an oil cup installation groove (15) for the oil cup (40) to slide back and forth therein, and an installation opening (150) is provided at the bottom of the front side of the cabinet (10) corresponding to the oil cup installation groove (15). The oil cup (40) is integrally strip-shaped and can be installed into the oil cup installation groove (15) through the installation opening (150) or taken out of the oil cup installation groove (15) through the installation opening (150).

4. The built-in circulation integrated cooking range according to claim 3, characterized in that: The bottom opening of the duct main body (50) is a long strip shape matching the shape of the open top of the oil cup (40), and the outer peripheral edge of the bottom opening of the duct main body (50) has a downward-extending limiting flange (51). The limiting flange (51) is integrally U-shaped with an open front. In the state where the oil cup (40) is installed in place in the oil cup installation groove (15), the edge of the open top of the oil cup (40) is in sealing contact with the limiting flange (51).

5. The built-in circulation integrated cooker according to any one of claims 1 to 4, characterized in that: The bottom of the front side of the cabinet (10) further has a kickboard (16) extending in the left-right direction, and ventilation holes (160) are distributed on the kickboard (16). The air outlet of the exhaust duct is opposite to each of the ventilation holes (160) on the kickboard (16).

6. The integrated cooker with an internal circulation according to claim 5, characterized in that: The exhaust duct has guiding walls (52) opposite to each other in the left-right direction at the air outlet, and the distance between the two guiding walls (52) gradually increases along the airflow flow path.

7. The integrated cooker with an internal circulation according to any one of claims 2 to 4, characterized in that: The air duct main body (50) is provided with a flow-through port (53) at a position corresponding to the oil cup (40). A drip tray (30) is further provided in the cabinet body (10) above the exhaust air duct. The drip tray (30) is provided with an oil leakage hole (31) at a position corresponding to the flow-through port (53) of the air duct main body (50).

8. The integrated range hood with an internal circulation according to claim 7, characterized in that: A partition plate (43) is provided inside the oil cup (40). The partition plate (43) is correspondingly located below the flow-through port (53), and divides the internal space of the oil cup (40) into a water storage area (41) and an oil storage area (42) which are arranged in sequence along the air flow direction in the exhaust air duct. A diversion plate (34) which can be driven by a driving mechanism to deflect up and down relative to the air duct main body (50) is further provided at the oil leakage hole (31) of the drip tray (30). The diversion plate (34) has a first diversion state of tilting forward from top to bottom to divert the oil liquid to the oil storage area (42) and a second diversion state of tilting backward from top to bottom to divert the oil-water mixture to the water storage area (41) during the deflection process.

9. The built-in-circulation integrated cooker according to claim 8, wherein: The outer peripheral edge of the oil leakage hole (31) of the drip tray (30) has an annular wall (32) extending downward to below the oil passing port of the air duct main body (50). The internal space enclosed by the annular wall (32) forms an activity cavity for placing the diversion plate (34). The middle parts of the left and right sides of the diversion plate (34) are rotatably connected to the opposite side walls of the annular wall (32). The diversion plate (34) has a first side edge (341) and a second side edge (342) opposite to each other in the front-rear direction. The outer peripheral edge of the oil leakage hole (31) also has an inwardly extending annular retaining edge (33). When the diversion plate (34) is in the first diversion state, the first side edge (341) at the rear side of the diversion plate (34) abuts against the annular retaining edge (33). When the diversion plate (34) is in the second diversion state, the second side edge (342) at the front side of the diversion plate (34) abuts against the annular retaining edge (33).

10. The integrated cooking range with an internal circulation according to claim 8, characterized in that: It further includes a humidity sensor for detecting the humidity of the flue gas. The humidity sensor and the driving mechanism are electrically connected to the control system of the integrated range hood, so that the control system of the integrated range hood can control the driving mechanism to act according to the flue gas humidity signal transmitted by the humidity sensor, and then adjust the diversion plate (34) to an angular position adapted to the current flue gas humidity.

11. The integrated range hood with an internal circulation according to claim 8, wherein: The top of the partition plate (43) also has overflow holes (430) arranged in sequence along the extension direction of the partition plate (43). Each overflow hole (430) communicates the water storage area (41) with the oil storage area (42).

12. The integrated range hood with an internal circulation according to any one of claims 1 to 4, characterized in that: The oil fume purification device includes a purification box (20) and a filtering module provided in the purification box (20). The filtering module is at least one of an electrode plate electrostatic adsorption module (21) and an activated carbon diaphragm adsorption module (22).

13. The integrated range hood with an internal circulation according to claim 12, characterized in that: The oil fume suction device includes a machine head (13) vertically arranged at the top of the cabinet body (10). The machine head (13) divides the top area of the cabinet body (10) into a first cooking area (110) and a second cooking area (120) located on the front and rear sides of the machine head (13) respectively. A first air duct (131) and a second air duct (132) are defined on the machine head (13). The upper part of the first air duct (131) forms a first smoke inlet (141) facing the first cooking area (110), and the upper part of the second air duct (132) forms a second smoke inlet (142) facing the second cooking area (120).

14. The integrated range hood with an internal circulation according to claim 13, wherein: The part of the cabinet body (10) located on the front side of the machine head (13) is denoted as the first cabinet body (11), and the part located on the rear side of the machine head (13) is denoted as the second cabinet body (12). The oil fume purification device is arranged in the second cabinet body (12). The oil cup (40) is arranged at the bottom of the first cabinet body (11). The exhaust air duct is arranged at the bottom of the cabinet body (10) and extends from the position where the second cabinet body (12) is located to the front side of the bottom of the first cabinet body (11).

15. A control method for an internal circulation integrated cooking stove as described in claim 9, characterized in that It includes the following steps: S1. The integrated stove is started; S2. The humidity of the current flue gas is obtained through a humidity sensor, and it is judged whether the humidity S of the current flue gas is greater than the set humidity value S0. If so, it is judged that the current flue gas component is mainly water vapor, and step S3 is entered; if not, it is judged that the current flue gas component is mainly oil fume, and step S4 is entered; S3. The driving mechanism acts to drive the diversion plate (34) to deflect to the second diversion state so as to divert the oil-water mixture to the water storage area (41) of the oil cup (40); S4. The driving mechanism acts to drive the diversion plate (34) to deflect to the first diversion state so as to divert the oil liquid to the oil storage area (42) of the oil cup (40).

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