Near suction type range hood

Abstract

The utility model relates to a near-suction type range hood which comprises a machine shell, a range hood cover and a range hood cover, the oil cup is arranged at the bottom of the exhaust fume collecting hood and is used for containing oil dripping from the exhaust fume collecting hood; the exhaust fume collecting hood comprises a rear side wall extending vertically and a front side wall opposite to the rear side wall in front, the front side wall comprises a front end wall and an air inlet plate which are sequentially arranged from top to bottom, the air inlet plate integrally inclines backwards from top to bottom, the upper side edge of the air inlet plate is connected with the bottom of the front end wall, and the lower side edge of the air inlet plate is connected with the bottom of the front end wall. The lower side edge of the air inlet plate extends to the position where the oil cup is located, strip-shaped air inlet holes which extend longitudinally and are sequentially formed in the left-right direction are formed in the air inlet plate, and an oil guiding part for guiding oil from top to bottom is formed in the area, corresponding to the position between every two adjacent strip-shaped air inlets, of the air inlet plate. The utility model has the advantages that the oil flowing down from the front part of the shell can be smoothly guided, and the accumulation of oil dirt is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a close-suction range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It generally includes ceiling-type range hoods and close-drawn range hoods. Among them, the close-drawn range hood usually includes a box body and an oil net assembly. An air inlet is provided on the front side wall of the box body. The oil smoke will enter the smoke collecting chamber from the air inlet and then be discharged from the exhaust port on the top of the box body. The oil smoke will adhere to the inner wall of the box body and condense into oil droplets, which will eventually drip from the air inlet to the stove surface, causing pollution.

[0003] To this end, application number CN202222286235.4 (authorization announcement number: CN218295894U) discloses a range hood, a range hood comprising: a shell, a centrifugal fan, an oil cup, a first oil guide plate, a second oil guide plate, a third oil guide plate and a fourth oil guide plate, the centrifugal fan having a volute, the bottom wall of the volute being provided with a drainage hole, the oil cup being arranged below the shell for receiving the oil in the shell; the first oil guide plate being arranged in the shell and located below the above-mentioned centrifugal fan, the plate surface of the first oil guide plate being opposite to the drainage hole of the above-mentioned centrifugal fan, so as to receive the oil flowing down from the drainage hole; at the same time, the first oil guide plate is inclined downward from front to back, and the lower edge of the first oil guide plate is located above the above-mentioned oil cup. The second oil guide plate is disposed at the front of the fan chamber with the plate surface facing downward, and is located in front of and above the air inlet of the volute, and the second oil guide plate is tilted downward from the center to the left and right sides, and the left and right sides of the second oil guide plate are connected with the corresponding left and right walls of the fan chamber. The second oil guide plate can guide the oil to the left and right side walls of the fan chamber, and the oil can flow down along the left and right side walls of the fan chamber. The left and right side edges of the opening at the bottom of the fan chamber extend in a direction away from each other and gradually tilted downward to form a third oil guide plate, and the two third oil guide plates are located in the smoke collecting chamber and on the left and right sides of the fan chamber, and the lower edges of the two third oil guide plates extend downward to form a fourth oil guide plate, and the lower edges of the two fourth oil guide plates are located above the first front side wall of the shell and on the left and right sides of the smoke inlet. The oil flowing down from the left and right side walls of the fan chamber can flow along the third oil guide plate and the fourth oil guide plate to the left and right sides of the smoke inlet, and then flow downward to the oil cup.

[0004] However, the oil guide structure of the above-mentioned range hood still has certain shortcomings. First, the air inlet of the air inlet plate of the housing is still provided with an independent oil net structure. Thus, the oil flowing from the air inlet plate of the housing from top to bottom is easily accumulated at the position where the oil net component and the air inlet plate are connected, forming oil stains that are difficult to clean. After a long time, there is a peculiar smell, which affects the user's experience. Among them, the first oil guide plate for receiving the oil flowing from the discharge hole of the volute is arranged adjacent to the oil net, that is, it is relatively far away from the bottom of the volute. Thus, during the operation of the range hood, affected by the airflow, the oil dripping from the volute may still deviate from the first guide plate and drip onto the stove from the mesh of the oil net.

[0005] Therefore, the existing close-suction range hoods need further improvement. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a close-suction range hood capable of smoothly guiding the oil flowing down from the front of the casing and avoiding the accumulation of oil stains in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a close-suction range hood that can effectively prevent the oil discharged from the volute from dripping onto the stove through the air inlet in response to the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve the first technical problem is:

[0009] A close-suction range hood, comprising:

[0010] Casing, including fume hood;

[0011] The oil cup is arranged at the bottom of the fume hood and is used to collect the oil dripping from the fume hood;

[0012] The characteristic is that: the smoke hood includes a rear side wall extending vertically and a front side wall opposite to the rear side wall in front, the front side wall includes a front end wall and an air inlet plate arranged in sequence from top to bottom, the air inlet plate is inclined backward from top to bottom as a whole, the upper side edge of the air inlet plate is connected to the bottom of the front end wall, the lower side edge of the air inlet plate extends to the position of the oil cup, and the air inlet plate is provided with strip air inlet holes extending longitudinally and arranged in sequence along the left and right directions, and the area on the air inlet plate corresponding to the area between two adjacent strip air inlets forms an oil guide portion for guiding the oil supply liquid from top to bottom.

[0013] In order to prevent the oil on the inner wall of the air inlet plate from flowing out through the strip air inlets, the peripheral edge of each strip air inlet on the air inlet plate has an oil-blocking flange folded and extended toward the inside of the smoke collecting hood.

[0014] In order to effectively guide the flow in certain key parts where a lot of oil flows, there is at least one oil guiding portion on the air inlet plate whose width in the left-right direction is greater than the width of the strip air inlet in the left-right direction. The oil guiding portion on the air inlet plate whose width in the left-right direction is greater than the width of the strip air inlet in the left-right direction is recorded as the first oil guiding portion.

[0015] As an improvement, the width of the first oil guide portion in the left-right direction is recorded as D, and the width of the strip-shaped air inlet in the left-right direction is recorded as d, wherein d≤D≤3d.

[0016] Since there is more oil in the middle of the air inlet plate in the left and right directions, it is further improved that the first oil guide part has at least three parts arranged in sequence along the left and right directions, wherein the first oil guide part with the largest width in the left and right directions is located in the middle of the air inlet plate in the left and right directions. The above-mentioned first oil guide parts located on the left and right sides can be arranged corresponding to the two sides of the fan system, and are used to receive the oil dripping from the side of the fan system. Under the premise of ensuring the oil fume absorption effect, the risk of oil dripping through the air inlet plate and falling on the table is greatly reduced.

[0017] In order to reserve as much space as possible for the operation panel and associated wires, the casing also includes a fan rack connected above the smoke hood, the inner cavity of the fan rack is communicated with the inner cavity of the smoke hood, and the portion where the front end wall of the smoke hood is located protrudes forward relative to the front wall of the fan rack, and the interior of the protruding portion defines an installation space for placing the operation panel of the range hood.

[0018] In order to form the above-mentioned installation space and prevent oil from entering the installation space, the front end wall of the smoke hood includes an upper side plate extending horizontally, a lower side plate located below the upper side plate, and a front side plate connected between the front side edge of the upper side plate and the front side edge of the lower side plate, and the lower side plate is inclined backward from top to bottom, and its bottom edge is connected to the air inlet plate;

[0019] A first oil guide plate extending downward from front to back is also provided in the smoke collecting hood adjacent to the front end wall. The first oil guide plate and the upper side plate, the lower side plate and the front side plate of the front end wall together enclose the installation space.

[0020] In order to facilitate installation with the air inlet plate, a portion of the lower side plate extends to the rear side of the vertical plane where the front wall of the fan rack is located.

[0021] In order to ensure the oil guiding effect of the first oil guide plate, the upper side of the first oil guide plate is located directly below the front wall of the fan rack or in front of the vertical plane where the front wall of the fan rack is located, and the lower side of the first oil guide plate extends to the position of the air inlet plate.

[0022] In order to smoothly guide the oil on the inner wall (especially the left and right side walls) of the fan frame to the oil cup, the size of the fan frame in the left and right direction is smaller than the size of the fume hood in the left and right direction, and the fan frame and the opening at the bottom are arranged at the central position of the fume hood in the left and right direction;

[0023] The smoke hood is also provided with a second oil guide plate formed by extending from the left and right edges of the opening at the bottom of the fan frame in a direction away from each other and gradually inclined downward. The two second oil guide plates are located in the smoke hood and on the left and right sides of the fan frame, and the lower edges of the two second oil guide plates extend downward to form a third oil guide plate. The lower edges of the two third oil guide plates are located above the air inlet plate of the smoke hood and on the left and right sides of the area where the strip air inlet holes are located.

[0024] In order to guide the oil to the rear side wall of the fume collecting hood at the same time, the second oil guiding plate is also tilted downward from the front to the back, and the rear side edge is connected to the rear side wall of the fume collecting hood.

[0025] The technical solution adopted by the utility model to solve the second technical problem is:

[0026] Also included is a fan system disposed in the housing, the fan system comprising a volute, the bottom of the volute having an oil leakage hole;

[0027] It also includes a fourth oil guide plate located below the volute, which is inclined downward from front to back, with its front end connected to the front side of the oil leakage hole of the volute, and its rear end connected to the rear side wall of the smoke hood.

[0028] In order to prevent the oil from overflowing to the left and right sides during the flow along the fourth oil guide plate, the left and right sides of the fourth oil guide plate extend upward to form side flanges, and the two side flanges and the main body of the fourth oil guide plate jointly define a guide groove with a notch inclined upward.

[0029] In order to facilitate the processing and assembly of the smoke hood and ensure its overall strength, the smoke hood also includes a left wall and a right wall opposite to each other in the left and right directions, and the rear wall includes a first rear plate and a second rear plate connected in the left and right directions, the left wall is connected to the first rear plate and is an integral design, and the right wall is connected to the second rear plate and is an integral design.

[0030] Compared with the prior art, the utility model has the following advantages: the air inlet hole is directly opened on the air inlet plate at the front of the smoke hood, and the oil is guided by the structure of the air inlet plate itself, which effectively avoids the problem of oil accumulation and oil not being guided smoothly due to the additional oil net component. In the preferred embodiment, a fourth oil guide plate adjacent to the bottom of the volute is provided to guide the oil flowing down from the volute to the side, greatly reducing the risk of oil dripping through the air inlet plate and falling on the stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of a range hood according to an embodiment of the utility model;

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the bottom of the range hood according to an embodiment of the utility model;

[0033] Figure 3 A vertical cross-sectional view of the oil fume extractor according to an embodiment of the utility model cut along the front-to-back direction;

[0034] Figure 4 A vertical sectional perspective view of the oil fume extractor according to an embodiment of the utility model cut along the left and right directions;

[0035] Figure 5 This is a schematic diagram of the three-dimensional structure of the air inlet plate of an embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the smoke collecting hood of the utility model embodiment after the air inlet plate is omitted;

[0037] Figure 7 for Figure 6 Exploded diagram of . DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0040] like Figure 1-Figure 7 , shows a preferred embodiment of the utility model, a close-suction range hood includes a casing 10, a fan system 3, an oil cup 14 and a smoke baffle 13.

[0041] The housing 10 includes a smoke hood 12 and a fan frame 11 disposed above the smoke hood 12, and the inner cavity of the smoke hood 12 is connected to the inner cavity of the fan frame 11. The fan system 3 is disposed in the fan frame 11. The size of the fan frame 11 in the left-right direction is smaller than the size of the smoke hood 12 in the left-right direction, and the fan frame 11 and the opening at the bottom are disposed at the central position of the left-right direction of the smoke hood 12. The fan system 3 generally adopts a centrifugal fan, which includes a volute 30, an impeller and a motor, and the output shaft of the motor is connected to the impeller to drive the impeller to rotate. An oil leakage hole 300 is provided at the bottom of the volute 30, which is used to discharge the oil accumulated on the inner wall of the volute 30 downward. The oil cup 14 is open at the top, which is disposed at the bottom of the smoke hood 12 and extends in the left-right direction, and is used to receive the oil flowing down from the smoke hood 12.

[0042] The smoke hood 12 includes a left side wall 123, a right side wall 124, a top plate, a rear side wall 121 extending vertically, and a front side wall opposite to the rear side wall 121 in front. The top plate has an opening that can correspond to the top opening of the fan frame 11. The front side wall of this embodiment includes a front end wall and an air inlet plate 1222 arranged in sequence from top to bottom, wherein the air inlet plate 1222 is tilted backward from top to bottom as a whole, the upper side edge of the air inlet plate 1222 is connected to the bottom of the front end wall, and the lower side edge of the air inlet plate 1222 extends to the position of the oil cup 14, specifically, it is located directly above the top opening of the oil cup 14. The rear side wall 121 of the smoke hood 12 of this embodiment includes a first rear plate and a second rear plate connected in the left-right direction, wherein the left side wall 123 is connected to the first rear plate 1211 and is designed as an integral body, which can be recorded as the left rear side plate; the right side wall 124 is connected to the second rear plate 1212 and is designed as an integral body, which can be recorded as the right rear side plate. The left rear side plate and the right rear side plate are fixed in the middle by screws, rivets or welding technology, so that the two parts are spliced ​​into one, and the front end wall 1221 is spliced ​​with the left rear side plate and the right rear side plate at the edge seam by welding technology, so as to be connected as one, thereby improving the overall strength of the smoke hood 12.

[0043] Specifically, the front end wall 1221 of the smoke hood 12 includes an upper side plate 1201 extending horizontally, a lower side plate 1202 located below the upper side plate 1201, and a front side plate 1203 connected between the front side edge of the upper side plate 1201 and the front side edge of the lower side plate 1202. The upper side plate 1201, the front side plate 1203, and the left and right sides of the lower side are connected to the left rear side plate and the right rear side plate respectively. The rear side edge of the upper side plate 1201 of the front end wall 1221 can be fitted and connected with the top of the smoke hood 12, and the lower side plate 1202 is tilted backward from top to bottom, and its bottom edge can be connected with the upper side edge of the air inlet plate 1222. Specifically, the bottom edge of the lower side plate 1202 extends to the rear side of the vertical plane where the front wall of the fan rack 11 is located.

[0044] The portion where the front end wall 1221 of the smoke hood 12 of this embodiment is located protrudes forward relative to the front wall of the fan frame 11, and the interior of the protruding portion defines an installation space 120 for placing the operation panel 4 and leads of the range hood. Specifically, a first oil guide plate 21 extending downward from front to back is also provided at a position adjacent to the front end wall 1221 in the smoke hood 12, and the upper side edge of the first oil guide plate 21 is located directly below the front wall of the fan frame 11 or at the front side of the vertical plane where the front wall of the fan frame 11 is located, and the lower side edge of the first oil guide plate 21 extends to the position where the air inlet plate 1222 is located. The first oil guide plate 21 and the upper side plate 1201, the lower side plate 1202, and the front side plate 1203 of the front end wall 1221 together enclose to form the above-mentioned installation space 120 for installing the operation panel 4.

[0045] The first oil guide plate 21 can guide the oil on the front wall of the fan frame 11 to the air inlet plate 1222 to prevent the oil from contacting the electronic components such as the operation panel 4 in the installation space 120. Figure 3 .

[0046] The air inlet plate 1222 of the smoke hood 12 is provided with strip air inlet holes extending longitudinally and arranged in sequence along the left-right direction, wherein the peripheral edge of each strip air inlet 1223 on the air inlet plate 1222 has an oil-blocking flange 1225 folded and extended inwardly toward the smoke hood 12, thereby preventing oil on the inner wall of the air inlet plate 1222 from flowing out through the strip air inlets 1223.

[0047] The smoke baffle plate 13 is disposed on the front side wall of the smoke collecting hood 12 and can be deflected forward and backward to open or close (block) the air inlet area where the strip air inlets 1223 on the air inlet plate 1222 are located.

[0048] In this embodiment, an oil guide portion 1224 for guiding the oil from top to bottom is formed on the air inlet plate 1222 corresponding to the area between the two adjacent strip air inlets 1223. In order to effectively guide the oil at certain key parts where the oil flows more, at least one oil guide portion 1224 on the air inlet plate 1222 has a width in the left-right direction greater than the width of the strip air inlet 1223 in the left-right direction, and an oil guide portion 1224 on the air inlet plate 1222 whose width in the left-right direction is greater than the width of the strip air inlet 1223 in the left-right direction is recorded as the first oil guide portion 1224a. The width of the first oil guide portion 1224a in the left-right direction is recorded as D, and the width of the strip air inlet 1223 in the left-right direction is recorded as d, where d≤D≤3d. Since there is more oil in the middle of the air inlet plate 1222 in the left and right directions, the first oil guide parts 1224a of this embodiment are arranged in sequence along the left and right directions, wherein the first oil guide part 1224a with the largest width in the left and right directions is located in the middle of the air inlet plate 1222 in the left and right directions. The first oil guide parts 1224a located on the left and right sides can be arranged corresponding to the two sides of the fan system 3, and are used to receive the oil stains dripping from the sides of the fan system 3. Under the premise of ensuring the oil fume absorbing effect, the risk of oil stains dripping through the air inlet plate 1222 and falling on the desktop is greatly reduced.

[0049] In this embodiment, an air inlet hole is directly opened on the air inlet plate 1222 at the front of the smoke hood 12, and the oil is guided by the structure of the air inlet plate 1222 itself, which effectively avoids the problem of oil stain accumulation and failure of oil to be guided smoothly due to the additional oil net component.

[0050] A second oil guide plate 22 and a third oil guide plate 23 are also provided in the smoke hood 12. The second oil guide plate 22 and the third oil guide plate 23 are of an integrated design and have two groups, which are respectively arranged on the left and right sides of the smoke hood 12, specifically on the left and right sides of the fan frame 11. Specifically, the two second oil guide plates 22 are formed by extending from the left and right edges of the opening at the bottom of the fan frame 11 in a direction away from each other and gradually inclined downward, and the lower edges of the two second oil guide plates 22 are extended downward to form the third oil guide plate 23. The lower edges of the two third oil guide plates 23 are located above the air inlet plate 1222 of the smoke hood 12, and are located on the left and right sides of the area where the strip air inlet holes are located. The oil on the left and right side walls 124 of the fan frame 11 can flow to the oil cup 14 at the bottom of the smoke hood 12 in sequence through the above-mentioned second oil guide plates 22 and third oil guide plates 23. The oil flow path is detailed in FIG. Figure 4 In order to guide the oil to the rear side wall 121 of the fume collecting hood 12 at the same time, the second oil guide plate 22 is further inclined downward from the front to the back, and the rear side edge is connected to the rear side wall 121 of the fume collecting hood 12 .

[0051] The front edges of the two second oil guide plates 22 can be connected to the left and right edges of the first oil guide plate 21 by screws.

[0052] The smoke collecting hood 12 of this embodiment is further provided with a fourth oil guide plate 24 located below the volute 30. The fourth oil guide plate 24 is tilted downward from front to back, with its front end connected to the front side of the oil leakage hole 300 of the volute 30, and its rear end connected to the rear side wall 121 of the smoke collecting hood 12, thereby, the oil dripping from the oil leakage hole 300 of the volute 30 can be directed backward to the rear side wall 121 of the smoke collecting hood 12. The oil flow path is detailed in FIG. Figure 3 The left and right sides of the fourth oil guide plate 24 both extend upward to form side flanges 241, and the two side flanges 241 and the body of the fourth oil guide plate 24 together define a guide groove 240 with an upwardly inclined notch. The design of the guide groove 240 can effectively prevent the oil from overflowing to the left and right sides during the flow along the fourth oil guide plate 24.

Claims

1. A close-suction range hood, comprising: The casing (10) includes a fume collecting hood (12); An oil cup (14) is arranged at the bottom of the smoke collecting hood (12) and is used to receive oil dripping from the smoke collecting hood (12); The smoke hood (12) is characterized in that: the smoke hood (12) includes a rear side wall (121) extending vertically and a front side wall opposite to the rear side wall (121) in front, the front side wall includes a front end wall (1221) and an air inlet plate (1222) arranged in sequence from top to bottom, the air inlet plate (1222) is inclined backward from top to bottom as a whole, the upper side edge of the air inlet plate (1222) is connected to the bottom of the front end wall, the lower side edge of the air inlet plate (1222) extends to the position of the oil cup (14), the air inlet plate (1222) is provided with strip air inlet holes extending longitudinally and arranged in sequence along the left and right directions, and the area on the air inlet plate (1222) corresponding to the area between two adjacent strip air inlets (1223) forms an oil guide portion (1224) for guiding the oil supply liquid from top to bottom.

2. The close-suction range hood according to claim 1, characterized in that: The periphery of each strip-shaped air inlet (1223) on the air inlet plate (1222) has an oil-blocking flange (1225) that is folded and extended inwardly toward the smoke collecting hood (12).

3. The close-suction range hood according to claim 2, characterized in that: There is at least one oil guide portion (1224) on the air inlet plate (1222) whose width in the left-right direction is greater than the width of the strip-shaped air inlet (1223) in the left-right direction, wherein the oil guide portion (1224) on the air inlet plate (1222) whose width in the left-right direction is greater than the width of the strip-shaped air inlet (1223) in the left-right direction is recorded as the first oil guide portion (1224a).

4. The close-suction range hood according to claim 3, characterized in that: The width of the first oil guide portion (1224a) in the left-right direction is recorded as D, and the width of the strip-shaped air inlet (1223) in the left-right direction is recorded as d, wherein d≤D≤3d.

5. The close-suction range hood according to claim 3, characterized in that: The first oil guide portions (1224a) have at least three arranged in sequence along the left-right direction, wherein the first oil guide portion (1224a) having the largest width in the left-right direction is located in the middle position of the air inlet plate (1222) in the left-right direction.

6. The close-suction range hood according to any one of claims 1 to 5, characterized in that: The casing (10) further comprises a fan frame (11) connected above the smoke hood (12); the inner cavity of the fan frame (11) is in communication with the inner cavity of the smoke hood (12); the portion where the front end wall (1221) of the smoke hood (12) is located protrudes forward relative to the front wall of the fan frame (11); the interior of the protruding portion defines an installation space (120) for placing an operating panel (4) of the range hood.

7. The close-suction range hood according to claim 6, characterized in that: The front end wall (1221) of the smoke hood (12) comprises an upper side plate (1201) extending horizontally, a lower side plate (1202) located below the upper side plate (1201), and a front side plate (1203) connected between the front side edge of the upper side plate (1201) and the front side edge of the lower side plate (1202), wherein the lower side plate (1202) is inclined backward from top to bottom, and its bottom edge is connected to the air inlet plate (1222); A first oil guide plate (21) extending downward from front to back is also provided in the smoke hood (12) adjacent to the front end wall (1221); the first oil guide plate (21) and the upper side plate (1201), the lower side plate (1202) and the front side plate (1203) of the front end wall (1221) together enclose the installation space (120).

8. The close-suction range hood according to claim 7, characterized in that: A portion of the lower side plate (1202) extends to the rear side of the vertical plane where the front wall of the fan frame (11) is located.

9. The close-suction range hood according to claim 7, characterized in that: The upper side edge of the first oil guide plate (21) is located directly below the front wall of the fan frame (11) or in front of the vertical plane where the front wall of the fan frame (11) is located, and the lower side edge of the first oil guide plate (21) extends to the position where the air inlet plate (1222) is located.

10. The close-suction range hood according to claim 6, characterized in that: The size of the fan frame (11) in the left-right direction is smaller than the size of the smoke collecting hood (12) in the left-right direction, and the fan frame (11) and the opening at the bottom are arranged at a central position corresponding to the left-right direction of the smoke collecting hood (12); The smoke hood (12) is also provided with a second oil guide plate (22) extending from the left and right edges of the opening at the bottom of the fan frame (11) in a direction away from each other and gradually inclined downward. The two second oil guide plates (22) are located in the smoke hood (12) and on the left and right sides of the fan frame (11), and the lower edges of the two second oil guide plates (22) extend downward to form a third oil guide plate (23). The lower edges of the two third oil guide plates (23) are located above the air inlet plate (1222) of the smoke hood (12) and on the left and right sides of the area where the strip air inlet holes are located.

11. The close-suction range hood according to claim 10, characterized in that: The second oil guide plate (22) is also inclined downward from front to back, and the rear edge is connected to the rear side wall (121) of the smoke collecting hood (12).

12. The close-suction range hood according to any one of claims 1 to 5, characterized in that: It also includes a fan system (3) arranged in the casing (10), the fan system (3) including a volute (30), and the bottom of the volute (30) is provided with an oil leakage hole; It also includes a fourth oil guide plate (24) located below the volute (30), the fourth oil guide plate (24) tilts downward from front to back, its front end is connected to the front side of the oil leakage hole of the volute (30), and its rear end is connected to the rear side wall (121) of the smoke hood (12).

13. The close-suction range hood according to claim 12, characterized in that: The left and right sides of the fourth oil guide plate (24) both extend upward to form side flanges (241), and the two side flanges (241) and the main body of the fourth oil guide plate (24) jointly define a guide groove (240) with an opening inclined upward.

14. The close-suction range hood according to any one of claims 1 to 5, characterized in that: The smoke hood (12) further comprises a left side wall (123) and a right side wall (124) which are opposite to each other in the left-right direction, the rear side wall (121) comprises a first rear plate (1211) and a second rear plate (1212) which are connected in the left-right direction, the left side wall (123) is connected to the first rear plate (1211) and is designed as an integral whole, and the right side wall (124) is connected to the second rear plate (1212) and is designed as an integral whole.

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