Air duct system and integrated cooker

Abstract

The utility model belongs to the technical field of electric appliances, and particularly discloses an air duct system and an integrated cooker. The air duct system comprises an air bellow and an exhaust fan, the air bellow is arranged in an L shape, the air bellow is provided with a vertical air duct vertically arranged and a transverse air duct communicating with the front side of the lower end of the vertical air duct, the vertical air duct is used for being arranged on the rear side of the functional module, and the transverse air duct is used for being arranged below the functional module; the exhaust fan is installed in the transverse air duct, a rotating shaft of the exhaust fan is arranged in the vertical direction, and a fan air inlet of the exhaust fan faces downwards and is spaced from the bottom of the transverse air duct. The integrated cooker comprises a shell and an air duct system, and the air duct system is arranged in the shell. According to the air duct system and the integrated cooker disclosed by the utility model, the attachment of grease in the exhaust fan can be reduced, the long-term use performance of the exhaust fan is improved, the oil smoke exhaust effect is improved, and the structural compactness and design flexibility of the integrated cooker are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to an air duct system and an integrated stove. Background Art

[0002] An integrated stove is a kitchen appliance that integrates multiple functions such as a range hood, gas stove, disinfection cabinet, storage cabinet, etc. It is favored by more and more families because of its compact structure, small footprint and high ease of operation.

[0003] In order to realize the extraction of cooking fumes, a machine head is arranged above the casing of the integrated stove, and an air duct system is arranged inside the casing. The machine head has a smoke collecting cavity and a smoke inlet connected to the smoke collecting cavity. The air duct system includes a bellows and a fan. The air inlet of the bellows is connected to the smoke collecting cavity, the air inlet of the fan is connected to the inner cavity of the bellows, and the air outlet of the fan is connected to a smoke exhaust pipe. A smoke exhaust port is arranged on one side of the casing, and the smoke exhaust pipe extends out of the casing through the smoke exhaust port.

[0004] In existing integrated stoves, the oil smoke generated by cooking is discharged through the smoke inlet, smoke collecting chamber, bellows cavity, fan and exhaust pipe in sequence. Since the oil smoke contains a lot of grease, after the oil smoke enters the fan, the grease is easily attached to the inside of the fan, resulting in a decrease in air volume and an increase in noise after long-term use of the fan, affecting the long-term performance of the fan, that is, affecting the oil fume extraction performance of the integrated stove. Utility Model Content

[0005] One purpose of the utility model is to provide an air duct system, which can reduce the adhesion of grease inside the exhaust fan, improve the long-term performance of the exhaust fan, and enhance the exhaust capacity of the air duct system.

[0006] Another object of the utility model is to provide an integrated stove, which can reduce the adhesion of grease inside the exhaust fan, improve the long-term use performance of the exhaust fan, ensure the oil fume extraction effect of the integrated stove, and improve the structural compactness and design flexibility of the integrated stove.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] An air duct system, characterized in that the air duct system comprises:

[0009] The bellows is L-shaped, and has a vertical air duct arranged vertically and a transverse air duct connected to the front side of the lower end of the vertical air duct, the vertical air duct is used to be arranged at the rear side of the functional module and the transverse air duct is used to be arranged below the functional module;

[0010] The exhaust fan is installed inside the transverse air duct and the rotating shaft of the exhaust fan is arranged in the vertical direction. The air inlet of the exhaust fan faces downward and is spaced apart from the bottom of the transverse air duct.

[0011] As an optional technical solution for an air duct system, the distance between the fan air inlet and the bottom surface of the lateral air duct is 80 mm to 150 mm;

[0012] And / or, the exhaust fan includes a volute, an impeller installed inside the volute and a motor driving the impeller to rotate, the lower end of the volute is provided with a fan air inlet, and the upper end of the volute is in contact with the top wall of the transverse air duct.

[0013] As an optional technical solution for an air duct system, the top wall of the transverse air duct is recessed from bottom to top to form a top groove, and the upper end of the motor extends into the top groove.

[0014] As an optional technical solution for an air duct system, the bottom surface of the transverse air duct is depressed downward to form an oil collecting groove, and an oil leakage hole is opened at the lowest point of the oil collecting groove, and the oil leakage hole is used to drain the oil into the oil cup.

[0015] As an optional technical solution for the air duct system, the inner side of the lower end of the exhaust fan is recessed downward to form an oil guide groove, which is arranged around the air inlet of the fan. An oil discharge port is opened at the bottom of the oil guide groove, and the oil discharge port is connected to the oil collecting tank.

[0016] As an optional technical solution for the air duct system, a mounting bracket is provided on the bottom surface of the air duct of the transverse air duct, and the exhaust fan is supported on the mounting bracket, and the mounting bracket is located on the outside of the air inlet of the fan;

[0017] The exhaust fan is detachably connected to the mounting bracket; and / or the mounting bracket is detachably connected to the bottom surface of the lateral air duct.

[0018] As an optional technical solution for an air duct system, an oil fume condensation structure is provided in the transverse air duct and / or the vertical air duct.

[0019] As an optional technical solution for an air duct system, the oil fume condensation structure includes an oil fume separation grille arranged in the vertical air duct, and the oil fume separation grille is made of a heat-conducting material.

[0020] As an optional technical solution for the air duct system, the front end of the transverse air duct is open, and the exhaust fan can enter and exit the transverse air duct through the front end opening of the transverse air duct;

[0021] And / or, the width of the transverse air duct in the left-right direction is greater than the width of the vertical air duct in the left-right direction.

[0022] An integrated stove comprises a casing and an air duct system as described above, wherein the air duct system is arranged in the casing.

[0023] As an optional technical solution for an integrated stove, the front end of the transverse air duct is open, and the exhaust fan can enter and exit the transverse air duct through the front end opening of the transverse air duct; a front trim panel assembly is provided on the front side of the casing of the integrated stove, and the front trim panel assembly is detachably connected to the casing to selectively open or close the front end opening.

[0024] Beneficial effects of the utility model:

[0025] The air duct system provided by the utility model is provided with an L-shaped air duct and the exhaust fan is horizontally installed in the transverse air duct, so that the flow trajectory of oil smoke from the smoke inlet to the fan air inlet is set in an L-shape, which can increase the path of oil smoke from the smoke inlet to the fan air inlet, thereby enhancing the effect of condensation of oil smoke inside the air duct and reducing grease entering into the exhaust fan; because the fan air inlet is arranged downward and is spaced from the air duct bottom surface of the transverse air duct, the oil smoke changes direction once when passing through the connecting part of the transverse air duct and the vertical air duct, and changes direction a second time when entering the fan air inlet from the transverse air duct, further increasing the path of oil smoke entering from the smoke inlet to the fan air inlet, and at the same time can increase the contact area between the oil smoke and the inner wall surface of the bellows when the oil smoke changes direction, thereby improving the condensation effect of oil smoke in the air duct, further reducing the entry of grease into the exhaust fan, and improving the long-term use performance of the exhaust fan. Furthermore, the air inlet of the fan is set downward, which is also conducive to the grease attached to the inside of the exhaust fan to flow downward out of the exhaust fan, further reducing the attachment of grease in the exhaust fan.

[0026] The integrated stove provided by the utility model can reduce the adhesion and accumulation of grease inside the exhaust fan by adopting the above-mentioned air duct system, improve the long-term use performance of the air duct system, and thus better ensure the oil fume extraction effect of the integrated stove; at the same time, since the path of the oil fume from the smoke inlet to the fan air inlet is increased, the fan air inlet is farther away from the smoke inlet, so that the negative pressure distribution at the smoke inlet is more uniform, thereby improving the oil fume extraction effect; furthermore, since the exhaust fan is horizontally arranged at the lower side of the functional module, the width of the vertical air duct in the front-to-back direction can be reduced, thereby reducing the size of the integrated stove in the front-to-back direction, or on the basis of keeping the size of the integrated stove in the front-to-back direction unchanged, the size of the functional module in the front-to-back direction can be increased, thereby reducing the restrictions on the structural design of the functional module, and improving the design flexibility of the integrated stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an integrated stove provided by an embodiment of the utility model;

[0028] Figure 2 is a cross-sectional view of an integrated stove provided by an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of a partially disassembled structure of an integrated stove provided by an embodiment of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the air duct system provided by an embodiment of the utility model;

[0031] Figure 5 is a cross-sectional view of the air duct system provided by an embodiment of the utility model;

[0032] Figure 6 It is a front view of the air duct system provided by the embodiment of the utility model;

[0033] Figure 7 It is a structural schematic diagram of the exhaust fan provided by an embodiment of the utility model.

[0034] In the figure:

[0035] 100, air duct system; 200, hood head; 201, smoke inlet; 202, smoke collecting chamber; 300, housing; 301, housing side panel; 400, gas stove; 500, functional module; 600, oil cup; 700, front trim assembly; 800, cover;

[0036] 1. bellows; 11. horizontal bellows; 111. air duct top plate; 1111. top groove; 1112. top protrusion; 112. air duct bottom plate; 1121. oil collecting groove; 1122. oil leakage hole; 113. horizontal air duct; 12. vertical bellows; 121. vertical air duct;

[0037] 2. Exhaust fan; 21. Volute; 211. Fan air inlet; 22. Impeller; 23. Motor; 24. Air guide ring;

[0038] 3. Mounting bracket; 4. Fixing seat; 5. Oil fume separation grille; 6. Air outlet pipe; 7. Sealing structure. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] The present embodiment provides an integrated stove, which can be used in a home kitchen environment to achieve cooking of food and exhaust of oil fumes during cooking, and to improve the long-term use performance of the integrated stove.

[0044] like Figure 1 and Figure 2 As shown, the integrated stove includes a housing 300, a gas stove 400, a hood module, a functional module 500 and an oil cup 600. The gas stove 400 is installed on the top of the housing 300 and is used to cook food; the hood module includes a hood head 200 and an air duct system 100. The hood head 200 is installed on the top of the housing 300 and is located at the rear side of the gas stove 400. The hood head 200 has a smoke inlet 201 and a smoke collecting chamber 202 connected to the smoke inlet 201; the air duct system 100 includes a bellows 1 arranged inside the housing 300 and an exhaust fan 2 installed in the bellows 1. The air vent is connected to the lower end of the smoke collecting chamber 202, the fan air inlet 211 of the exhaust fan 2 is connected to the inner cavity of the bellows 1, a smoke exhaust port is provided on the side wall of the casing 300, the air outlet of the exhaust fan 2 is connected to the air outlet pipe 6, and the air outlet pipe 6 is connected to the smoke exhaust port; an oil leakage hole 1122 is provided on the bottom surface of the air duct, and an oil cup 600 is installed under the bellows 1, and the oil leakage hole 1122 is located above the oil cup 600, so that the oil cup 600 can collect the oil dripping downward from the oil leakage hole 1122.

[0045] In this embodiment, the wind box 1 is L-shaped and has an L-shaped air duct formed inside. The wind box 1 has a vertical air duct 121 and a transverse air duct 113 connected to the front side of the lower end of the vertical air duct 121. The vertical air duct 121 is arranged at the rear side of the functional module 500, and the upper end is connected to the smoke collecting chamber 202, and the lower end is connected to the rear end of the transverse air duct 113. The transverse air duct 113 is located below the functional module 500. The exhaust fan 2 is installed inside the transverse air duct 113 and the rotating shaft of the exhaust fan 2 is arranged vertically. The fan air inlet 211 faces downward and is spaced from the bottom of the transverse air duct 113.

[0046] When extracting oil fumes, the exhaust fan 2 is started and the oil fumes generated by cooking or other gases that need to be extracted enter the smoke collecting chamber 202 through the smoke inlet 201, and are discharged through the vertical air duct 121, the horizontal air duct 113, the exhaust fan 2 and the air outlet pipe 6 in sequence.

[0047] The air duct system 100 and the integrated stove provided in the present embodiment are provided with an L-shaped air duct and the exhaust fan 2 is horizontally installed in the transverse air duct 113, so that the flow trajectory of the oil smoke from the smoke inlet 201 to the fan air inlet 211 is arranged in an L-shape, which can increase the path of the oil smoke from the smoke inlet 201 to the fan air inlet 211, thereby enhancing the effect of the oil smoke condensing inside the air duct and reducing the grease entering the exhaust fan 2; because the fan air inlet 211 is arranged downward and spaced from the bottom surface of the transverse air duct 113, the oil smoke changes direction once when passing through the connecting point of the transverse air duct 113 and the vertical air duct 121, and enters from the transverse air duct 113 to the vertical air duct 121. The fan changes direction for the second time at the air inlet 211, further increasing the path of the oil smoke from the smoke inlet 201 to the fan air inlet 211, and at the same time increasing the contact area between the oil smoke and the inner wall of the bellows 1 when the oil smoke changes direction, thereby improving the condensation effect of the oil smoke in the air duct, further reducing the entry of grease into the exhaust fan 2, and improving the long-term performance of the exhaust fan 2; furthermore, the fan air inlet 211 is set downward, which is also conducive to the grease attached to the exhaust fan 2 to flow downward out of the exhaust fan 2, and be recovered to the oil cup 600 through the oil leakage hole 1122 on the bottom of the air duct, further reducing the attachment of grease in the exhaust fan 2 and facilitating the collection of waste oil.

[0048] At the same time, since the path of the oil fume from the smoke inlet 201 to the fan air inlet 211 increases, the fan air inlet 211 is further away from the smoke inlet 201, so that the negative pressure distribution at the smoke inlet 201 is more uniform, thereby improving the extraction effect of the oil fume; furthermore, since the exhaust fan 2 is horizontally arranged on the lower side of the functional module 500, the width of the vertical air duct 121 in the front-to-back direction can be reduced, thereby reducing the size of the integrated stove in the front-to-back direction, or on the basis of keeping the size of the integrated stove in the front-to-back direction unchanged, the size of the functional module 500 in the front-to-back direction can be increased, thereby reducing the restrictions on the structural design of the functional module 500 and improving the design flexibility of the integrated stove.

[0049] In this embodiment, the specific structures of the hood head 200, the gas stove 400, the functional module 500 and the oil cup 600 can be set with reference to the prior art, which is not the focus of the present invention and will not be described in detail. Among them, the functional module 500 can be, but is not limited to, one or more of a steamer, an oven, a steam oven, a disinfection cabinet, a dishwasher, etc.

[0050] like Figure 2 and Figure 3 As shown, in order to improve the convenience of loading and unloading and maintenance of the exhaust fan 2, the front end of the transverse air duct 113 is open to form a front opening, and the front side of the housing 300 is detachably provided with a front trim assembly 700, which is located at the lower side of the functional module 500, and the front trim assembly 700 can close or open the front opening. When the front trim assembly 700 opens the front opening, the exhaust fan 2 can enter and exit the transverse air duct 113 through the front opening, thereby enabling the exhaust fan 2 to be loaded and unloaded, cleaned or maintained, thereby improving the convenience of loading and unloading, cleaning and maintenance of the exhaust fan 2. When the front trim assembly 700 closes the front opening, the outer side of the front trim assembly 700 is flush with the outer side of the functional module 500, so as to maintain the overall consistency and aesthetics of the integrated stove appearance, and facilitate the cleaning of the integrated stove.

[0051] The front panel assembly 700 and the housing 300 can be connected in a detachable manner such as screw connection, magnetic connection or snap connection. This embodiment does not limit the specific structure and specific installation structure of the front panel assembly 700.

[0052] like Figures 2 to 4 As shown, in order to improve the processing and assembly convenience of the air duct system 100, the wind box 1 includes a connected vertical wind box 12 and a horizontal wind box 11, the vertical wind box 12 is arranged at the rear side of the functional module 500 and its inner cavity forms a vertical wind duct 121, the horizontal wind box 11 is arranged below the functional module 500 and its inner cavity forms a horizontal wind duct 113, and the exhaust fan 2 is detachably arranged inside the horizontal wind box 11. The vertical wind box 12 and the horizontal wind box 11 can be welded or connected in a detachable manner, as long as the vertical wind duct 121 and the horizontal wind duct 113 are sealed and connected.

[0053] In this embodiment, the lateral wind box 11 is a hexahedral structure as a whole to simplify the processing difficulty of the lateral wind box 11. The vertical wind box 12 includes a box body, and the cross section of the box body is rectangular to reduce the width of the vertical wind box 12 in the front-to-back direction. The left and right sides of the box body extend outward with extended protrusions, which are used to cooperate with the casing 300 to achieve the limit of the wind box 1 in the left and right directions when it is installed inside the casing 300. The installation structure of the wind box 1 inside the fan can be set with reference to the existing technology, and will not be repeated here.

[0054] The width of the transverse air duct 113 in the left-right direction is greater than the width of the vertical air duct 121 in the left-right direction. This makes it easier to install the bellows 1 inside the casing 300 while increasing the size of the transverse bellows 11 in the left-right direction, increasing the installation space of the exhaust fan 2, and increasing the air intake space of the exhaust fan 2, thereby improving the air intake efficiency of the exhaust fan 2.

[0055] In this embodiment, a tube perforation is provided on the side wall of the transverse wind box 11, and the tube perforation is arranged opposite to the smoke exhaust port one by one. The air outlet pipe 6 passes through the tube perforation and the smoke exhaust port in sequence. A sealing structure 7 is provided between the side of the transverse wind box 11 with the tube perforation and the side of the casing 300 with the smoke exhaust port. The sealing structure 7 is arranged around the tube perforation and the smoke exhaust port, and the sealing structure 7 cooperates with the air outlet pipe 6 to seal and block the smoke exhaust port, so that the smoke in the transverse air duct 113 can only flow out through the fan and the air outlet pipe 6.

[0056] It is worth noting that, in this embodiment, the sealing structure 7 between the bellows 1 and the casing 300 and the sealing structure 7 between the air outlet pipe 6 and the smoke exhaust port can be arranged with reference to the prior art, and this embodiment does not limit this.

[0057] In this embodiment, the housing 300 has two housing side panels 301 arranged opposite to each other in the left and right directions, and both housing side panels 301 are provided with smoke exhaust ports. The exhaust fan 2 has a first installation state and a second installation state. When the exhaust fan 2 is in the first installation state, the air outlet of the exhaust fan 2 faces the smoke exhaust port on the left, and when the exhaust fan 2 is in the second installation state, the air outlet of the exhaust fan 2 faces the smoke exhaust port on the right. Therefore, the direction of the air outlet of the exhaust fan 2 can be changed by adjusting the installation state of the exhaust fan 2, thereby changing the position where the air outlet pipe 6 is connected to the public flue, flexibly setting the installation position of the integrated stove, and improving the convenience of installation and use of the integrated stove.

[0058] Furthermore, the integrated stove also includes a cover 800, which is detachably connected to the housing 300, and the unused smoke exhaust port is blocked by the cover 800 to prevent smoke leakage.

[0059] To ensure the efficiency of oil fume extraction, the same end face of the exhaust fan 2 is arranged downward when the exhaust fan 2 is in the first installation state and the second installation state, and the exhaust fan 2 is switched between the first installation state and the second installation state by rotating around the vertical axis. As a result, the exhaust fan 2 provided in this embodiment is a single-inlet fan, and its fan air inlet 211 is always arranged downward, so that the wind force of the exhaust fan 2 in the first installation state and the second installation state is consistent, effectively realizing equivalent air outlet on the left and right sides, and improving the performance of the integrated stove.

[0060] like Figures 4 to 7 As shown, in this embodiment, the exhaust fan 2 includes a volute 21, an impeller 22 and a motor 23. The volute 21 has a wind cavity, an air inlet end face and an air outlet end face. The air inlet end face is provided with the above-mentioned fan air inlet 211, and one side of the volute 21 is provided with a fan air outlet connected to the wind cavity; the impeller 22 is installed inside the wind cavity and the rotating shaft of the impeller 22 extends in the vertical direction; the motor 23 is installed on the leeward side of the volute 21 and connected to the impeller 22 to drive the impeller 22 to rotate. In order to reduce the noise of air intake and improve the smoothness of air intake, an air guide ring 24 is also provided on the air inlet end face. The air guide ring 24 is arranged in an annular shape and connected to the volute 21, and the inner hole of the air guide ring 24 forms the fan air inlet 211.

[0061] The transverse air box 11 has a duct top plate 111 forming the top wall of the transverse air duct 113 and a duct bottom plate 112 forming the bottom surface of the duct. The bottom surface of the duct of the transverse air duct 113 is recessed downward to form an oil collecting groove 1121, that is, the duct bottom plate 112 is recessed downward to form an oil collecting groove 1121, and an oil leakage hole 1122 is opened at the lowest point of the oil collecting groove 1121. The oil gathered on the duct bottom plate 112 flows along the oil collecting groove 1121 to the oil leakage hole 1122, and then passes through the oil leakage hole 1122 and converges downward to the oil cup 600.

[0062] In this embodiment, the distance between the air inlet end face and the air duct bottom plate 112 is 80 mm to 200 mm, that is, the distance between the fan air inlet 211 and the bottom surface of the air duct is 80 mm to 200 mm, so as to avoid the problem of poor air intake at the fan air inlet 211 due to too small a distance, ensure the air intake efficiency of the exhaust fan 2, and avoid too large a distance resulting in excessive occupation of the internal space of the housing 300. Preferably, the distance between the fan air inlet 211 and the bottom surface of the air duct is 80 mm to 120 mm.

[0063] It is understandable that, since the air duct bottom plate 112 is not arranged horizontally, the distance between the air duct bottom plate 112 and the fan air inlet 211 is not equal at all locations, but the distance at all locations should meet the setting of being greater than 80 mm.

[0064] In this embodiment, the distance between the leeward end surface and the air duct top plate 111 is less than or equal to 10 mm, preferably less than 5 mm, to reduce the probability of oil smoke entering between the air duct top plate 111 and the leeward end surface. Preferably, the leeward end surface is in contact with the air duct top plate 111.

[0065] In this embodiment, the lower side surface of the air duct top plate 111 is recessed from bottom to top to form a top groove 1111, and the top groove 1111 is arranged directly opposite to the motor 23 to provide a shelter for the portion of the motor 23 protruding from the leeward end surface, thereby reducing the distance between the leeward end surface and the air duct top plate 111 and improving the installation convenience of the exhaust fan 2 in the transverse air duct 113.

[0066] In this embodiment, the top groove 11111111 is formed by stamping the air duct top plate 111 upward, that is, the air duct top plate 111 is formed with a top protrusion 1112 at a position corresponding to the top groove 1111. The size and shape of the top groove 1111 can be specifically set according to the structure of the leeward side of the exhaust fan 2, and are not limited here.

[0067] When the oil smoke flows through the exhaust fan 2, part of the grease will adhere to the blades and the inner wall of the volute 21. After the grease condenses, it will gather downwards. Part of the oil will drip directly downwards to the air duct bottom plate 112 of the transverse air duct 113 through the fan air inlet 211, and part of the oil will gather downwards to the inner side of the lower end of the exhaust fan 2. In order to better guide the oil inside the exhaust fan 2 to flow out, the inner side of the lower end of the exhaust fan 2 is recessed downward to form an oil guide groove, which is arranged around the fan air inlet 211. An oil discharge port is provided at the bottom of the oil guide groove, and the oil discharge port is connected to the oil collecting tank 1121. That is, by providing the oil guide groove, the oil inside the lower end can be gathered to the oil guide groove and drip downwards through the oil discharge port, thereby reducing the accumulation of oil inside the exhaust fan 2 and further ensuring the performance of the exhaust fan 2.

[0068] The oil guide groove can be arranged at the air guide ring 24 or at the lower end surface of the volute 21, as long as it is conducive to the convergence of the oil inside the exhaust fan 2. The oil discharge port is arranged at the lowest point of the oil guide groove.

[0069] In order to improve the convenience of installation and disassembly of the exhaust fan 2, in the present embodiment, a mounting bracket 3 is provided on the bottom surface of the transverse air duct 113, and the exhaust fan 2 is supported on the mounting bracket 3. The exhaust fan 2 is detachably connected to the mounting bracket 3, and / or the mounting bracket 3 is detachably connected to the bottom surface of the air duct. By providing the mounting bracket 3 at the bottom of the transverse air duct 113, it is beneficial to ensure that the exhaust fan 2 is spaced apart from the bottom surface of the air duct, while allowing the leeward end surface of the exhaust fan 2 to be as close to the top plate 111 of the air duct as possible; at the same time, by providing the mounting bracket 3 to be detachably connected to the exhaust fan 2 and / or the bottom surface of the air duct, the exhaust fan 2 can be detachably installed in the transverse air duct 113.

[0070] The orthographic projection of the mounting bracket 3 on the air inlet end face is located outside the fan air inlet 211 to reduce the interference of the mounting bracket 3 on the air inlet of the exhaust fan 2 .

[0071] In order to better realize the exhaust fan 2 selectively adopting the first installation state or the second installation state, in the present embodiment, two mounting brackets 3 are arranged at intervals on the left and right sides of the bottom surface of the air duct. When the exhaust fan 2 is in the first installation state, the exhaust fan 2 is connected to one of the mounting brackets 3. When the exhaust fan 2 is in the second installation state, the exhaust fan 2 is connected to the other mounting bracket 3.

[0072] In order to further improve the convenience of installation of the exhaust fan 2, a fixing seat 4 is installed on the air inlet end face of the exhaust fan 2. When the exhaust fan 2 is in the first installation state, the fixing seat 4 is detachably connected to the mounting bracket 3 on the left side. When the exhaust fan 2 is in the second installation state, the fixing seat 4 is detachably connected to the mounting bracket 3 on the right side. The specific structure of the fixing seat 4 and the mounting bracket 3 can be specifically set according to the installation requirements, as long as the exhaust fan 2 can be stably installed.

[0073] An oil fume condensation structure is provided in the transverse air duct 113 and / or the vertical air duct 121 , and the oil fume condensation structure is used to condense the oil fume passing therethrough to further separate the oil fume and reduce the oil content entering the exhaust fan 2 .

[0074] In this embodiment, the oil fume condensation structure includes an oil fume separation grille 5 disposed in the vertical air duct 121, and the oil fume separation grille 5 is made of a heat conductive material. By disposing the oil fume separation grille 5, the contact area between the oil fume and the oil fume separation grille 5 can be increased, thereby enhancing the oil fume condensation effect; and disposing the oil fume separation grille 5 in the vertical air duct 121 can improve the convenience of disposing the oil fume separation grille 5.

[0075] Furthermore, the oil fume separation grille 5 includes a plurality of grille plates, which include a plurality of first grille plates and a plurality of second grille plates that are vertically staggered. The first grille plates extend in the left-right direction, and the second grille plates extend in the front-back direction. Smoke channels are formed between two adjacent first grille plates and two adjacent second grille plates, and the smoke channels are arranged in the vertical direction.

[0076] In other embodiments, the oil fume condensation structure may also adopt other structures or be arranged at other positions. For example, in one embodiment, a plurality of protruding structures may be arranged on the front and rear air duct walls of the vertical air duct 121, so as to enhance the oil fume separation effect through the contact between the protruding structures and the oil fume. In another embodiment, a plurality of filter screens may be arranged at intervals along the height direction in the vertical air duct 121, and the meshes of the plurality of filter screens may be arranged staggered on the horizontal projection plane.

[0077] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An air duct system, characterized in that: The air duct system comprises: The wind box (1) is arranged in an L-shape, and comprises a vertical wind channel (121) arranged vertically and a transverse wind channel (113) connected to the front side of the lower end of the vertical wind channel (121), wherein the vertical wind channel (121) is used to be arranged at the rear side of the functional module (500) and the transverse wind channel (113) is used to be arranged below the functional module (500); An exhaust fan (2) is installed inside the transverse air duct (113) and the rotating shaft of the exhaust fan (2) is arranged in the vertical direction. The fan air inlet (211) of the exhaust fan (2) faces downward and is spaced apart from the bottom of the transverse air duct (113).

2. The air duct system according to claim 1, characterized in that: The distance between the fan air inlet (211) and the bottom surface of the transverse air duct (113) is 80 mm to 200 mm; And / or, the exhaust fan (2) comprises a volute (21), an impeller (22) installed inside the volute (21), and a motor (23) driving the impeller (22) to rotate, the fan air inlet (211) is provided at the lower end of the volute (21), and the upper end of the volute (21) is in contact with the top wall of the transverse air duct (113).

3. The air duct system according to claim 2, characterized in that: The top wall of the transverse air duct (113) is recessed from bottom to top to form a top groove (1111), and the upper end of the motor (23) extends into the top groove (1111).

4. The air duct system according to claim 1, characterized in that: The bottom surface of the transverse air duct (113) is concave downward to form an oil collecting groove (1121), and an oil leakage hole (1122) is opened at the lowest point of the oil collecting groove (1121). The oil leakage hole (1122) is used to discharge oil to the oil cup (600).

5. The air duct system according to claim 4, characterized in that: The inner side of the lower end of the exhaust fan (2) is recessed downward to form an oil guide groove, the oil guide groove is arranged around the fan air inlet (211), and an oil discharge port is provided at the bottom of the oil guide groove, and the oil discharge port is connected to the oil collecting groove (1121).

6. The air duct system according to claim 1, characterized in that: A mounting bracket (3) is provided on the bottom surface of the transverse air duct (113), the exhaust fan (2) is supported on the mounting bracket (3), and the mounting bracket (3) is located outside the fan air inlet (211); The exhaust fan (2) is detachably connected to the mounting bracket (3); and / or the mounting bracket (3) is detachably connected to the bottom surface of the air duct of the transverse air duct (113).

7. The air duct system according to any one of claims 1 to 6, characterized in that: An oil fume condensation structure is provided in the transverse air duct (113) and / or the vertical air duct (121).

8. The air duct system according to claim 7, characterized in that: The oil fume condensation structure comprises an oil fume separation grille (5) arranged in the vertical air duct (121), and the oil fume separation grille (5) is made of a heat-conducting material.

9. The air duct system according to any one of claims 1 to 6, characterized in that: The front end of the transverse air duct (113) is open, and the exhaust fan (2) can enter and exit the transverse air duct (113) through the front end opening of the transverse air duct (113); And / or, the width of the transverse air duct (113) in the left-right direction is greater than the width of the vertical air duct (121) in the left-right direction.

10. An integrated stove, comprising a housing (300), characterized in that: It comprises the air duct system according to any one of claims 1 to 9, wherein the air duct system is arranged in the casing (300).

11. The integrated stove according to claim 10, characterized in that: The front end of the transverse air duct (113) is open, and the exhaust fan (2) can enter and exit the transverse air duct (113) through the front end opening of the transverse air duct (113); a front trim panel assembly (700) is provided on the front side of the casing of the integrated stove, and the front trim panel assembly (700) is detachably connected to the casing (300) to selectively open or close the front end opening.

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