Smoke gathering cavity and oil smoke suction equipment

Abstract

The utility model belongs to the technical field of electric appliances, and discloses a smoke gathering cavity and oil smoke suction equipment. The smoke gathering cavity comprises two opposite and spaced smoke gathering side parts and a smoke gathering top connected between the top ends of the two smoke gathering side parts, a smoke inlet is defined by the smoke gathering top and the two smoke gathering side parts, and the smoke gathering top is provided with a rear oil guide face extending downwards from front to back. The oil fume suction equipment comprises an oil fume collecting hood, an oil fume gathering cavity and a turning plate assembly, wherein the oil fume collecting hood is provided with a front side opening and an oil fume collecting cavity which are communicated; the smoke gathering cavity directly faces the front side opening, the lower end of the smoke gathering cavity is movably installed in the smoke collecting hood, the upper end of the smoke gathering cavity can forwards stretch out of the front side opening, and the smoke inlet communicates with the smoke collecting cavity; the turning plate assembly is rotationally installed on the front side of the exhaust fume collecting hood and can open or close the exhaust fume inlet and the opening in the front side. The oil fume collecting device can improve the oil fume collecting effect of the oil fume suction equipment, the convenience of oil collection and treatment in the oil fume suction equipment is improved, and the use experience of the oil fume suction equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric appliances, especially relates to a smoke gathering cavity, a smoke collecting device and an oil fume extractor. BACKGROUND

[0002] With the improvement of people's living standards, the oil fume extractor capable of realizing oil fume extraction has become one of the kitchen appliances indispensable in people's daily life, and in order to reduce the floor space of the oil fume extractor in the kitchen, the thinning of the oil fume extractor is required.

[0003] In order to realize the thinning of the oil fume extractor, the prior art provides an oil fume extractor, which comprises a smoke collecting cover arranged in a "7" shape and a flap rotatably installed on the front side of the smoke collecting cover, the smoke collecting cover comprises a fixed shell part and a sliding shell part, the front side of the fixed shell part is provided with a front side opening, and the flap is rotatably installed on the front side of the fixed shell part and can open or close the front side opening; the sliding shell part has a smoke inlet opening penetrating from front to back, and the sliding shell part is slidably installed on the fixed shell part in the front-back direction to selectively extend out of the front side opening and retreat into the sliding shell part, so that when the sliding shell part extends out of the front side opening, the smoke inlet opening can be moved, and the depth of the smoke collecting cavity in the smoke collecting cover is increased, and the smoke gathering effect is improved.

[0004] The oil fume extractor provided by the prior art has the problems that when the oil fume extractor is running, the sliding shell part partially extends out of the fixed shell part, and since part of the oil fume will adhere to the sliding shell part during extraction, the oil adhering to the sliding shell part may drip downward to the cooking bench, affecting the cleaning of the cooking bench and also reducing the cleaning difficulty of the oil fume extractor. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of smoke gathering cavity and oil fume extractor, to improve the smoke gathering effect while, it is beneficial to realize the collection and processing of oil in smoke collecting cavity.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of smoke gathering cavity, including two smoke gathering side parts of relative and interval arrangement and the smoke gathering top part connected between the top end of two described smoke gathering side parts, the smoke gathering top part and two described smoke gathering side part are formed with smoke inlet opening by surrounding, the smoke gathering top part has rear oil guide surface that extends downward from front to back.

[0008] As an optional technical solution of a kind of smoke gathering cavity, the rear oil guide surface at least part extends downward from front to back by arc bending;

[0009] And / or, the upper side of the smoke gathering top part has front oil guide surface that extends downward from rear to front, and the rear end of the front oil guide surface is connected with the front end of the rear oil guide surface.

[0010] As an optional technical solution of the smoke gathering cavity, the smoke gathering top comprises a front oil guide plate part and a rear oil guide plate part connected to the rear end of the front oil guide plate part, the upper side of the front oil guide plate part forms the front oil guide surface, and the upper side of the rear oil guide plate part forms the rear oil guide surface.

[0011] Alternatively, the smoke gathering top is a circumferentially closed solid or hollow structure.

[0012] As an optional technical solution of the smoke gathering cavity, the front end of the front oil guide plate part is connected with a smoke blocking part, the smoke blocking part extends in the direction towards the rear oil guide plate part, and in the front-rear direction, the front end of the rear oil guide plate part is arranged on the front side of the rear end of the smoke blocking part.

[0013] As an optional technical solution of the smoke gathering cavity, the smoke gathering cavity comprises a bottom frame part connected between the two smoke gathering side parts, the bottom frame part has a bottom groove with an open lower end, and the lower end of the smoke gathering side part is provided with a mounting shaft hole in communication with the bottom groove.

[0014] And / or, the smoke gathering side part comprises a side frame part and a side blocking plate part connected to the rear side of the side frame part, the thickness of the side frame part is greater than the rear end of the side blocking plate part, and the smoke gathering top extends from the front end of the side frame part to the rear end of the side blocking plate part.

[0015] An oil fume suction device comprises:

[0016] A smoke collecting hood having a front side opening and a smoke collecting cavity in communication;

[0017] The smoke gathering cavity as above is arranged opposite to the front side opening and movably mounted in the smoke collecting hood, and the upper end of the smoke gathering cavity can extend forward out of the front side opening, and the smoke inlet is in communication with the smoke collecting cavity.

[0018] A flap assembly rotatably mounted on the front side of the smoke collecting hood and capable of opening or closing the smoke inlet and the front side opening.

[0019] As an optional technical solution of the oil fume suction device, the smoke collecting hood has a front plate forming a front cavity wall of the smoke collecting cavity, the front plate is provided with the front side opening, the upper side edge of the front side opening is connected with an oil guide part, the oil guide part is arranged extending downward from front to rear, and the rear end of the oil guide part is located on the upper side of the rear oil guide surface.

[0020] And / or, the flap assembly comprises a smoke gathering plate and a smoke guide boss protruding on the back side of the smoke gathering plate, the side of the smoke guide boss away from the smoke gathering plate has a smoke guide surface, the smoke gathering plate can close the smoke inlet and the front side opening, and when the smoke gathering plate closes the smoke inlet, the smoke guide boss is located in the smoke inlet.

[0021] As an optional technical scheme of the oil fume suction equipment, the top of the smoke guide boss has an oil guide top surface, and the front end of the smoke gathering top is located above the oil guide top surface.

[0022] And / or, when the smoke gathering plate opens the smoke inlet, the upper end rear side of the smoke guide boss extends into the smoke inlet.

[0023] As an optional technical scheme of the oil fume suction equipment, the smoke guide surface comprises an upper smoke guide section and a lower smoke guide section which are connected in sequence, the upper smoke guide section is a curved surface which is recessed towards the smoke gathering plate, and the lower smoke guide section is a curved surface which is protruded away from the smoke gathering plate.

[0024] And / or, when the smoke gathering plate closes the smoke inlet, the oil guide top surface extends downward from front to rear.

[0025] And / or, the oil guide top surface has a recessed section which is recessed in a direction away from the smoke gathering top.

[0026] As an optional technical scheme of the oil fume suction equipment, the smoke guide surface comprises an upper smoke guide section and a lower smoke guide section which are connected in sequence, the upper smoke guide section is a curved surface which is recessed towards the smoke gathering plate, and the lower smoke guide section is a curved surface which is protruded away from the smoke gathering plate.

[0027] Or, the smoke guide surface is an arc surface which is recessed towards the smoke gathering plate.

[0028] Or, the smoke guide surface is an inclined surface which is inclined relative to the smoke gathering plate, and the lower end of the smoke guide surface is provided with an arc-shaped protrusion which extends in a left-right direction.

[0029] Or, the lower end of the smoke guide surface is provided with an arc-shaped recess which extends in the left-right direction.

[0030] As an optional technical scheme of the oil fume suction equipment, the oil fume suction equipment further comprises a driving member and a transmission rod group, the upper end of the flap assembly is rotatably installed on the smoke collecting hood through the transmission rod group, and the driving member drives the transmission rod group to move so as to make the flap assembly overturn.

[0031] The front side of the smoke collecting hood is provided with an avoiding opening, the back side of the flap assembly is connected with an oil blocking cover, the oil blocking cover extends rearward and is arranged in the avoiding opening, the oil blocking cover has an oil blocking cavity which is open upward, and at least the lower side of the transmission rod group is located in the oil blocking cavity.

[0032] The oil fume suction equipment has the following beneficial effects:

[0033] The smoke gathering cavity provided by the utility model, through the smoke gathering top and two smoke gathering sides, a through smoke inlet is formed, when the smoke gathering cavity is installed on the smoke collecting cover, the smoke gathering cavity can form a smoke gathering space with the flap assembly, the smoke gathering space depth is increased, the smoke gathering effect is improved; through the rear oil guide surface extending downward from front to back on the smoke gathering top, when the oil fume in the smoke collecting cover drops or adheres on the smoke gathering top, the oil fume can drop downward along the rear oil guide surface, the probability of oil gathering on the smoke gathering cavity is reduced, the probability of oil dropping downward to the cooking bench is reduced, the convenience of oil collection and cleaning in the smoke collecting cover is improved.

[0034] The oil fume suction equipment provided by the utility model, through the smoke gathering cavity and the flap assembly, the smoke gathering space can be formed through the cooperation of the smoke gathering cavity and the flap assembly, the smoke gathering effect of the oil fume suction equipment is improved, the oil fume suction effect of the oil fume suction equipment is improved, the probability of oil fume escaping is reduced; meanwhile, through the smoke gathering cavity, the collection and cleaning of oil in the smoke collecting cavity are facilitated, the use and cleaning experience of the oil fume suction equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is the structure schematic view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the closed state;

[0036] Figure 2 It is the structure schematic view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the open state;

[0037] Figure 3 It is the sectional view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the closed state;

[0038] Figure 4 It is the sectional view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the open state; Figure 3 It is the sectional view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the open state;

[0039] Figure 5 It is the sectional view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the open state;

[0040] Figure 6 It is the sectional view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the open state; Figure 5 It is the sectional view of the oil fume suction equipment provided by the utility model embodiment when the flap assembly is in the open state;

[0041] Figure 7 It is the structure schematic view of the smoke gathering cavity provided by the utility model embodiment;

[0042] Figure 8 It is the structure schematic view of the flap assembly provided by the utility model embodiment;

[0043] Figure 9 It is the structure schematic view of the smoke collecting device provided by the utility model embodiment after removing the back plate;

[0044] Figure 10 is a partial structure schematic view of the smoke collecting device provided by the embodiment of the present application;

[0045] Figure 11 is Figure 10 the local enlarged view of K in the middle;

[0046] Figure 12 is Figure 10 the local enlarged view of L in the middle.

[0047] in the figure:

[0048] 100, smoke collecting device; 200, bellow assembly; 300, oil cup;

[0049] 1, flap assembly; 11, smoke gathering plate; 12, smoke guide boss; 121, smoke guide surface; 122, arc-shaped convex part; 123, oil guide top surface; 1231, recessed section; 13, mounting support;

[0050] 2, smoke gathering cavity; 21, smoke gathering side part; 211, side frame part; 2111, rod mounting hole; 2112, mounting shaft hole; 212, side baffle part; 22, smoke gathering top part; 221, rear oil guide plate part; 2211, rear oil guide surface; 222, front oil guide plate part; 2221, front oil guide surface; 223, smoke blocking part; 23, bottom frame part; 231, bottom groove; 24, smoke inlet;

[0051] 3, flip linkage mechanism; 31, transmission rod group; 311, driving rod part; 3111, main rod part; 3112, mounting plate; 312, driven rod part; 313, support rod part; 314, limiting rod part; 316, connecting assembly; 3161, connecting plate; 3162, first shaft part; 3163, second shaft part; 32, linkage rod;

[0052] 4, driving motor; 41, output shaft; 42, convex shaft; 43, motor shell;

[0053] 5, smoke collecting cover; 51, smoke collecting vertical part; 511, front plate; 512, oil guide part; 5121, first inclined plate part; 5122, vertical plate part; 5123, second inclined plate part; 52, smoke collecting horizontal part; 53, smoke collecting cavity;

[0054] 6, side smoke baffle plate; 7, oil blocking cover; 71, avoiding long hole; 72, oil blocking cavity; 8, front plate;

[0055] 9, plate mounting seat; 10, bottom mounting seat; 20, fixing seat. DETAILED DESCRIPTION

[0056] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely intended to explain the utility model and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0057] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0058] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0059] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0060] The embodiment provides an oil fume suction equipment, which can realize thinning of the oil fume suction equipment, improve oil fume suction effect, improve oil collection convenience and improve use experience of the oil fume suction equipment.

[0061] As Figures 1 to 5As shown, the oil fume suction equipment comprises a smoke collecting device 100 and a bellows assembly 200. The smoke collecting device 100 has a smoke collecting cavity 53 and a smoke inlet 24 communicating with the smoke collecting cavity 53, and the top end of the smoke collecting device 100 has a smoke outlet communicating with the smoke collecting cavity 53; the bellows assembly 200 is installed at the top end of the smoke collecting device 100, and the bellows assembly 200 comprises a bellows and a fan installed inside the bellows, the air inlet of the fan communicates with the smoke outlet, and the air outlet of the fan is provided with a check valve, the air outlet end of the check valve is connected with an exhaust pipe, and the exhaust pipe extends outside the bellows to exhaust the oil fume to the external environment.

[0062] The smoke collecting device 100 comprises a smoke collecting cover 5, a smoke collecting cavity 2 and a flap assembly 1. The smoke collecting cover 5 has a front side opening and a smoke collecting cavity 53 in communication, and the bellows assembly 200 is installed at the upper end of the smoke collecting cover 5; the smoke collecting cavity 2 is opposite to the front side opening and has a front and rear through smoke inlet 24, the smoke inlet 24 is communicated with the smoke collecting cavity 53, and the smoke collecting cavity 2 is movably installed inside the smoke collecting cover 5, so that the upper end of the smoke collecting cavity 2 can be extended out of the front side opening or returned to the smoke collecting cavity 53; the flap assembly 1 is rotatably installed on the front side of the smoke collecting cover 5 and can be turned to open or close the smoke inlet 24 and the front side opening.

[0063] When the flap assembly 1 is turned to open the smoke inlet 24 and the upper end of the smoke collecting cavity 2 extends out of the front side opening, the smoke collecting cavity 2 and the flap assembly 1 form a lower open smoke collecting space, and the smoke collecting space is communicated with the smoke collecting cavity 53 through the smoke inlet 24, so that the smoke collecting effect of the smoke collecting device 100 and the oil fume suction effect of the oil fume suction equipment can be improved by the cooperation of the flap assembly 1 and the smoke collecting cover 5.

[0064] The smoke collecting cavity 2 comprises two smoke collecting side parts 21 oppositely and spaced apart and a smoke collecting top part 22 connected between the top ends of the two smoke collecting side parts 21, the smoke collecting top part 22 and the two smoke collecting side parts 21 form the smoke inlet 24, and the upper side of the smoke collecting top part 22 has a rear oil guide surface 2211 extending downward from rear to front.

[0065] The smoke collecting cavity 2 provided in the embodiment forms a through smoke inlet 24 by the smoke collecting top part 22 and the two smoke collecting side parts 21, so that when the smoke collecting cavity 2 is installed in the smoke collecting cover 5, the smoke collecting space can be formed by cooperating with the flap assembly 1, the depth of the smoke collecting space is increased, and the smoke collecting effect is improved; by arranging the rear oil guide surface 2211 extending downward from front to rear on the smoke collecting top part 22, when the oil fume in the smoke collecting cover 5 drops or adheres to the smoke collecting top part 22, it can drop downward along the rear oil guide surface 2211, the probability of oil accumulation on the smoke collecting cavity 2 is reduced, and the convenience of oil collection and cleaning in the smoke collecting cover 5 is improved.

[0066] The smoke collection device 100 and the fume extraction equipment provided in this embodiment, by setting up the smoke collection cavity 2 and the flap assembly 1, can form a smoke collection space through the cooperation of the smoke collection cavity 2 and the flap assembly 1, thereby improving the smoke collection effect of the smoke collection device 100, thereby improving the fume extraction effect of the fume extraction equipment and reducing the probability of fume escape; at the same time, by setting up the above-mentioned smoke collection cavity 2, it is convenient to realize the collection and cleaning of oil inside the smoke collection cavity 53, improving the user and cleaning experience of the smoke collection device 100.

[0067] To collect the oil within the smoke collection chamber 53, the fume extraction device also includes an oil cup 300. The oil cup 300 is installed at the bottom of the smoke collection hood 5, and an oil drain port is provided at the bottom of the smoke collection chamber 53, directly opposite the upper opening of the oil cup 300. This allows the oil inside the smoke collection chamber 53 to flow downwards through the oil drain port into the oil cup 300 for collection. The specific structure of the oil cup 300 can be based on existing technology, which is not the focus of this invention.

[0068] The smoke collection hood 5 includes a vertical smoke collection section 51 and a horizontal smoke collection section 52 connected to the top of the vertical smoke collection section 51. The horizontal smoke collection section 52 extends forward from the top of the vertical smoke collection section 51, making the smoke collection hood 5 have a "7"-shaped structure. This results in a smaller overall thickness of the smoke collection device 100, while the top has sufficient width for installing the bellows. At the same time, the horizontal smoke collection section 52 can prevent the oil fumes from escaping upwards, improving the smoke collection effect. The front opening is located on the front side of the vertical smoke collection section 51.

[0069] The vertical smoke collection section 51 includes a front plate 511 and a back plate arranged opposite each other. The front plate 511 and the back plate are vertically arranged, and a base plate is connected between the lower ends of the back plate and the front plate 511. An oil drain port is provided on the base plate, and an oil cup 300 is installed below the base plate. The front plate 511 has a front opening. When the flap assembly 1 blocks the front opening and the smoke inlet 24, the back side of the flap assembly 1 is approximately in contact with or a small distance away from the front plate 511. Furthermore, a front panel 8 is provided on the front side of the front plate 511. The front panel 8 is located above the front opening, and when the flap assembly 1 closes the smoke inlet 24, the front panel 8 is approximately flush with the front side of the flap assembly 1, thereby improving the overall aesthetics and ease of cleaning of the smoke collection device 100.

[0070] like Figures 3 to 8 As shown, in this embodiment, an oil guiding part 512 is connected to the upper edge of the front opening. The oil guiding part 512 extends downward from front to back, and its rear end is located above the rear oil guiding surface 2211. By providing the oil guiding part 512, the oil adhering to the back side of the front plate 511 can drip down from the front plate 511 onto the oil guiding part 512, then flow downward and backward along the oil guiding part 512 and drip onto the rear oil guiding surface 2211, and then drip down along the rear oil guiding surface 2211 to the bottom of the smoke collection chamber 53, which can further improve the reliability and convenience of oil collection.

[0071] The oil guiding portion 512 includes a first inclined plate portion 5121, a vertical plate portion 5122 and a second inclined plate portion 5123 connected in sequence from front to back, the first inclined plate portion 5121 and the second inclined plate portion 5123 both extend downwardly and obliquely from front to back, the vertical plate portion 5122 extends vertically, and the upper end of the first inclined plate portion 5121 is connected with the upper side edge of the front side opening. The structure of the oil guiding portion 512 is arranged such that the first inclined plate portion 5121 and the second inclined plate portion 5123 guide the oil to flow backward, and the arrangement of the vertical plate portion 5122 can reduce the height of the rear end of the oil guiding portion 512, thereby reducing the spacing between the oil guiding portion 512 and the rear oil guiding surface 2211; at the same time, the structure of the oil guiding portion 512 is beneficial to increasing the overall structural strength and rigidity of the oil guiding portion 512 while ensuring the front-to-back width of the oil guiding portion 512, and reducing the probability of deformation of the oil guiding portion 512. In other embodiments, the oil guiding portion 512 can also have a plate-like structure that extends downwardly and obliquely from front to back as a whole.

[0072] To improve the smoke gathering and smoke guiding effect when the flap assembly 1 is opened, the flap assembly 1 includes a smoke gathering plate 11 and a smoke guiding boss 12 protrudingly arranged on the rear side of the smoke gathering plate 11, the smoke guiding boss 12 extends along the left-right direction, and a smoke guiding surface 121 is formed on the side of the smoke guiding boss 12 away from the smoke gathering plate 11. The smoke gathering plate 11 can close the smoke inlet 24 and the front side opening, and when the smoke gathering plate 11 closes the smoke inlet 24, the smoke guiding boss 12 is located in the smoke inlet 24 to avoid interference between the smoke guiding boss 12 and the smoke gathering cavity 2, and also avoid the arrangement of the smoke guiding boss 12 occupying additional space in the smoke collecting cavity 53. When the flap assembly 1 opens the smoke inlet 24, the smoke guiding surface 121 guides the upwardly flowing oil fume to flow to the smoke inlet 24, thereby improving the smoke gathering effect; at the same time, the arrangement of the smoke guiding boss 12 can reduce the gap between the flap assembly 1 and the smoke gathering cavity 2 when the flap assembly 1 is opened, thereby reducing the probability of the oil fume escaping upwardly through the gap and further improving the smoke gathering effect.

[0073] In the present embodiment, the upper end of the smoke guiding boss 12 is formed with an oil guiding top surface 123, the oil guiding top surface 123 has a downwardly and obliquely extending trend from front to back, and the front end of the smoke gathering top portion 22 is located above the oil guiding top surface 123. In this way, when the oil drops through the gap between the smoke gathering top portion 22 and the smoke gathering plate 11 to the oil guiding top surface 123, or the oil drops attached to the back side of the smoke gathering plate 11 and above the smoke guiding boss 12 drop downwardly to the oil guiding top surface 123, the oil dropped on the oil guiding top surface 123 can drop downwardly to the bottom of the smoke collecting cavity 53 under the guidance of the oil guiding top surface 123, and then be collected into the oil cup 300, thereby avoiding the accumulation of oil on the top of the smoke guiding boss 12, and improving the use and cleaning experience of the smoke collecting device 100.

[0074] To further improve the effect of oil collection, in the embodiment, the upper side of the smoke gathering top 22 also has a front oil guide surface 2221 which extends obliquely from back to front, and the rear end of the front oil guide surface 2221 is connected to the front end of the rear oil guide surface 2211, and the front end of the front oil guide surface 2221 forms the front end of the smoke gathering top 22, thereby being able to guide the part of the oil liquid attached to the smoke gathering top 22 to drip down to the oil guide top surface 123 along the front oil guide surface 512; at the same time, the arrangement of the front oil guide surface 2221 makes the spacing between the smoke gathering top 22 and the smoke gathering plate 11 increase from bottom to top when the flap assembly 1 closes the smoke inlet 24, thereby facilitating the avoidance of the turning of the flap assembly 1, avoiding the interference of the upper end of the smoke gathering top 22 with the smoke gathering plate 11 due to the too small spacing therebetween, improving the turning smoothness and reliability of the flap assembly 1 and the smoke gathering cavity 2, and improving the use reliability of the smoke collecting device 100.

[0075] In the embodiment, the rear oil guide surface 2211 is at least partially curved downward in an arc shape from front to back, thereby being able to realize the oil liquid guide while increasing the spacing between the local position of the rear oil guide surface 2211 and the upper side edge of the smoke inlet 24 and the oil guide surface 512, avoiding the interference of the smoke gathering cavity 2 with the rear oil guide surface 512 during the turning, and improving the turning reliability of the smoke gathering cavity 2. In other embodiments, the rear oil guide surface 2211 can also be a straight inclined surface extending downward from front to back.

[0076] That is, the rear oil guide surface 2211 includes an oil guide arc surface, and at least one end of the oil guide arc surface is smoothly connected with an oil guide inclined surface, so as to ensure the front-to-back extension width of the rear oil guide surface 2211 while avoiding the oil guide arc surface being too deep to occupy the space of the smoke inlet 24.

[0077] In the embodiment, the smoke gathering top 22 includes a rear oil guide plate portion 221 and a front oil guide plate portion 222 connected to the front end of the front oil guide plate portion 222, the rear oil guide plate portion 221 extends downward from front to back and the upper side thereof forms the rear oil guide surface 2211, and the front oil guide plate portion 222 extends downward from back to front, and the upper side of the front oil guide plate portion 222 forms the front oil guide surface 2221. The left and right ends of the front oil guide plate portion 222 and the rear oil guide plate portion 221 are connected with the side frame portion 211. The structure of the smoke gathering top 22 is simple, the cost is low, and the weight is light. In other embodiments, the smoke gathering top 22 can be a circumferentially closed solid or hollow structure.

[0078] Further, the smoke gathering top 22 further comprises a smoke blocking portion 223 connected to the front end of the front oil guiding plate portion 222, the smoke blocking portion 223 is located below the rear oil guiding plate portion 221 and extends towards the rear oil guiding plate portion 221, the smoke blocking portion 223 is used to stop the oil fume flowing to the angle between the front oil guiding plate portion 222 and the rear oil guiding plate portion 221, so as to avoid the oil dirt accumulating or local vortex at the angle and improve the guiding effect of the oil fume.

[0079] Further, the rear end of the rear oil guiding plate portion 221 is connected with a lower edge portion extending downwards, the setting of the lower edge portion can better guide the oil liquid on the upper side of the rear oil guiding surface 2211 to drop downwards to the bottom of the smoke collecting cavity 53, which is beneficial to realize the oil liquid collection.

[0080] The oil guiding top surface 123 has a concave section 1231 concave downwards, the concave section 1231 can reduce the probability of interference between the smoke guiding boss 12 and the smoke gathering cavity 2 when the flap assembly 1 is turned over. The oil guiding top surface 123 comprises a straight section connected to the rear end of the concave section 1231, the straight section extends rearward to the upper end rear side edge of the smoke guiding boss 12, so as to better adapt to the upper end edge of the smoke inlet 24.

[0081] The oil guiding top surface 123 comprises a convex section located on the front side of the concave section 1231, the convex section is convex rearward relative to the smoke gathering plate 11, so as to better guide the oil dirt on the back side of the smoke gathering plate 11 to flow downwards to the concave section 1231 and then drop into the smoke collecting cavity 53. In other embodiments, the concave section 1231 can also be directly connected to the back surface of the smoke gathering plate 11 through a smooth curved surface, so as to guide the oil liquid on the back side of the smoke gathering plate 11 to drop downwards along the oil guiding top surface 123.

[0082] In the embodiment, when the flap assembly 1 is in the open state, the upper end rear edge of the smoke guiding boss 12 is located in the smoke inlet 24, that is, in the front-rear direction, the upper end rear edge of the smoke guiding boss 12 is located rearward of the front side edge of the smoke inlet 24. Thus, when the flap assembly 1 is opened, the upper end of the smoke guiding boss 12 at least partially overlaps the smoke gathering cavity 2 in the front-rear direction, so as to better guide the oil fume to enter into the smoke inlet 24 through the smoke guiding boss 12 and reduce the probability of the oil fume entering into the space above the smoke guiding boss 12 through the gap between the flap assembly 1 and the smoke gathering cavity 2, and further reduce the probability of oil accumulation above the smoke guiding boss 12.

[0083] In the embodiment, the smoke guiding surface 121 is a straight inclined surface inclined relative to the smoke gathering plate 11, and the distance between the smoke guiding surface 121 and the smoke gathering plate 11 increases from bottom to top, and when the flap assembly 1 is in the open state, the smoke guiding surface 121 extends rearward from top to bottom, so as to guide the oil fume to enter into the smoke inlet 24 along the oil guiding surface.

[0084] In another embodiment, the smoke guide surface 121 is an arc surface which is concave towards the smoke gathering plate 11, so that the flow speed of the oil fume along the smoke guide surface 121 is reduced, and the probability of the oil fume escaping upwards or sideways is reduced, and the smoke guiding effect is improved.

[0085] In another embodiment, the smoke guide surface 121 comprises an upper smoke guide segment and a lower smoke guide segment which are connected smoothly, the lower smoke guide segment is connected below the upper smoke guide segment, and the lower smoke guide segment is a curved surface which is convex relative to the smoke gathering plate 11, and the upper smoke guide segment is a curved surface which is concave relative to the smoke gathering plate 11. That is, the smoke guide surface 121 is an S-shaped surface. By arranging the lower smoke guide segment which is convex relative to the smoke gathering plate 11, the oil fume is guided to flow along the smoke guide surface 121 by the wall attachment effect, and the smoke guiding effect is improved. By arranging the upper smoke guide segment which is concave, the impact speed of the oil fume is reduced, and the smoke gathering effect is improved. The upper smoke guide segment is preferably an arc surface which is concave, and the lower smoke guide segment is preferably an arc surface which is convex.

[0086] In the embodiment, the lower end of the smoke guide surface 121 is provided with an arc-shaped convex part 122 which is convex rearward, and the arc-shaped convex part 122 extends along the left-right direction. The arc-shaped convex part 122 guides the oil fume into the smoke gathering cavity 53 by the wall attachment effect, and guides the oil fume to enter the smoke inlet 24 along the smoke guide slope. In another embodiment, the lower end of the smoke guide surface 121 is provided with an arc-shaped groove which is concave forward and extends along the left-right direction, so as to reduce the impact speed of the oil fume, and further gather the oil fume to improve the smoke gathering effect.

[0087] As shown in Figs. 1, 2 and 3, the smoke gathering cavity 53 is arranged in the smoke gathering cavity body 2, and the smoke gathering cavity 53 is connected to the smoke inlet 24 and the smoke outlet 25. The smoke gathering cavity 53 is arranged in the smoke gathering cavity body 2, and the smoke gathering cavity 53 is connected to the smoke inlet 24 and the smoke outlet 25. The smoke gathering cavity 53 is arranged in the smoke gathering cavity body 2, and the smoke gathering cavity 53 is connected to the smoke inlet 24 and the smoke outlet 25. Figure 5 and 7 As shown in Figs. 1, 2 and 3, the smoke gathering cavity 53 is arranged in the smoke gathering cavity body 2, and the smoke gathering cavity 53 is connected to the smoke inlet 24 and the smoke outlet 25. The smoke gathering cavity 53 is arranged in the smoke gathering cavity body 2, and the smoke gathering cavity 53 is connected to the smoke inlet 24 and the smoke outlet 25. The smoke gathering cavity 53 is arranged in the smoke gathering cavity body 2, and the smoke gathering cavity 53 is connected to the smoke inlet 24 and the smoke outlet 25.

[0088] In the embodiment, the smoke gathering cavity body 2 further comprises a bottom frame part 23 which is connected between the bottom parts of the two side frame parts 211, so as to enhance the overall structural strength of the smoke gathering cavity body 2, to stabilize the distance between the lower ends of the two side frame parts 211, and to reduce the probability of deformation of the smoke gathering cavity body 2 during use. In another embodiment, the smoke gathering cavity body 2 can not be provided with the bottom frame part 23. Further, the bottom frame part 23 is connected between the two side frame parts 211.

[0089] As Figure 7 , Figure 9 and Figure 10 shown, to achieve the installation of the smoke gathering cavity 2, the inside of the smoke collecting cover 5 is provided with a bottom mounting seat 10, and the bottom mounting seat 10 is provided with one on the left and right sides of the smoke gathering cavity 2, and the left and right sides of the smoke gathering cavity 2 are rotatably mounted on the bottom mounting seat 10. In this embodiment, the bottom mounting seat 10 includes a seat body and a mounting rotating shaft protruding on the seat body, the mounting rotating shaft is rotatably inserted into the side frame part 211, and the seat body is located outside the smoke gathering cavity 2.

[0090] In order to reduce the invasion of oil fume on the rotating connection between the smoke gathering cavity 2 and the mounting rotating shaft, in this embodiment, the bottom frame part 23 is provided with a bottom groove 231 with a lower opening, and the side frame part 211 is provided with a mounting shaft hole 2112 in communication with the bottom groove 231, and the mounting rotating shaft extends into the bottom groove 231 through the mounting shaft hole 2112. Therefore, the mounting rotating shaft can be accommodated in the bottom groove 231 and be shielded by the bottom frame part 23, thereby reducing the invasion of oil fume on the mounting rotating shaft.

[0091] As Figure 2 , Figure 9 and Figure 10 shown, the smoke collecting device 100 further comprises a driving member and a transmission rod group 31, the upper end of the flap assembly 1 is rotatably mounted on the smoke collecting cover 5 through the transmission rod group 31, and the driving member drives the transmission rod group 31 to move to make the flap assembly 1 flip. The front side of the smoke collecting cover 5 is provided with an avoiding opening, and the transmission rod group 31 is arranged in the avoiding opening, so that the flap assembly 1 can be flipped outward.

[0092] In order to reduce the invasion of oil fume on the transmission rod group 31, in this embodiment, the back side of the flap assembly 1 is connected with an oil blocking cover 7, the oil blocking cover 7 extends backward and is arranged in the avoiding opening, the oil blocking cover 7 has an oil blocking cavity 72 with an upper opening, and at least the lower side of the transmission rod group 31 is located in the oil blocking cavity 72, so that the oil blocking cover 7 can shield the transmission rod group 31 upward, thereby reducing the invasion of the oil fume flowing upward on the transmission rod group 31, and ensuring the activity reliability of the transmission rod group 31; at the same time, this kind of arrangement can also improve the overall appearance of the smoke collecting device 100.

[0093] In this embodiment, the smoke gathering cavity 2 is connected with a linkage rod 32, the linkage rod 32 extends along the left and right directions and is connected with the transmission rod group 31, and the oil blocking cover 7 is provided with an avoiding long hole 71 avoiding the linkage rod 32. The activity of the transmission rod group 31 drives the linkage rod 32 to move, so that when the flap assembly 1 is flipped to open the smoke inlet 24, the smoke gathering cavity 2 is flipped forward, and when the flap assembly 1 is flipped to close the smoke inlet 24, the smoke gathering cavity 2 is flipped backward into the smoke collecting cavity 53.

[0094] That is, in this embodiment, the transmission rod assembly 31 and the linkage rod 32 cooperate to form the flipping linkage mechanism 3, so that one driving member can simultaneously drive the flap assembly 1 and the smoke collecting chamber 2 to move, reducing the number of driving members, lowering the driving cost, and simplifying the operation control of the smoke collecting device 100. In other embodiments, the flap assembly 1 and the smoke collecting chamber 2 can be driven by separate driving structures, that is, the flap assembly 1 and the smoke collecting chamber 2 operate independently.

[0095] In this embodiment, a side baffle plate 6 is provided inside the smoke collection chamber 53. One side baffle plate 6 is provided on each of the left and right sides of the front opening. The drive motor 4 and the transmission rod assembly 31 are both located on the side baffle plate 6 away from the smoke collection chamber 2, so as to prevent the oil fumes from flowing towards the drive motor 4 and the transmission rod assembly 31. The side baffle plate 6 is provided with a clearance rod hole for the linkage rod 32 to pass through.

[0096] like Figures 10 to 12 As shown, to improve the flipping reliability of the flap assembly 1 and the smoke-collecting cavity 2, two transmission rod groups 31 are spaced apart in the left-right direction. The smoke-collecting cavity 2 is located between the two transmission rod groups 31, and linkage rods 32 are provided on both the left and right sides of the smoke-collecting cavity 2. In this embodiment, the drive motor 4 is connected to one of the transmission rod groups 31 to reduce the number of drive motors 4 and lower costs. In other embodiments, the drive motor 4 can also be arranged in a one-to-one correspondence with the transmission rod groups 31.

[0097] Furthermore, rod mounting holes 2111 are provided on the left and right sides of the smoke collection chamber 2 along its height direction. The linkage rod 32 can be movably inserted through the rod mounting holes 2111, thereby reducing the difficulty of fitting the linkage rod 32 with the smoke collection chamber 2. The width of the rod mounting hole 2111 is adapted to the diameter of the linkage rod 32. Specifically, the rod mounting hole 2111 is provided in the side frame portion 211.

[0098] In this embodiment, the transmission rod assembly 31 includes an active rod 311 and a driven rod 312. The first end of the active rod 311 is connected to the upper end of the flap assembly 1 and the second end is hinged to the smoke hood 5. The output shaft 41 of the drive motor 4 is connected to the active rod 311. One end of the driven rod 312 is hinged to the motor housing 43 of the drive motor 4, and the other end is connected to the linkage rod 32.

[0099] That is, when the output shaft 41 of the drive motor 4 rotates, it drives the active rod 311 to rotate, thereby driving the flap assembly 1 to rotate relative to the smoke hood 5. Since the output shaft 41 of the drive motor 4 is connected to the active rod 311, the movement of the active rod 311 drives the drive motor 4 to move as a whole, thereby causing the drive motor 4 to drive the driven rod 312 to move, and then drive the upper end of the smoke collection cavity 2 to flip forward relative to the smoke hood 5, so that the drive motor 4 moves with the flap assembly 1, and the smoke collection cavity 2 and the flap assembly 1 are linked.

[0100] In the embodiment, as the driving motor 4 moves with the flap assembly 1, the opening stroke of the flap assembly 1 can be increased while the space required for the driving motor 4 to move is reduced, thereby reducing the overall footprint of the turnover linkage mechanism 3 and facilitating the thin and light design of the smoke collecting device 100 and the cooking fume extractor. As the output shaft 41 of the driving motor 4 is connected with the driving link 311, the driving force of the driving motor 4 can directly overcome the gravity of the flap assembly 1 to drive the flap assembly 1 to rotate, and the smoke collecting cavity 2 can be turned over with the assistance of gravity, thereby saving the driving force of the driving motor 4 and facilitating the control of the driving stroke of the flap assembly 1.

[0101] In another embodiment, the driving motor 4 can also be connected with the flap assembly 1, and the output shaft 41 of the driving motor 4 is connected with the smoke collecting cavity 2. That is, the output shaft 41 is connected with the driven link 312, and the motor housing 43 is hingedly connected with the driving link 311. The rotation of the output shaft 41 drives the upper end of the smoke collecting cavity 2 to rotate and simultaneously drives the driving motor 4 to move as a whole. The movement of the driving motor 4 as a whole drives the flap assembly 1 to turn over through the driving link 311. In another embodiment, the motor housing 43 of the driving motor 4 is fixedly installed on the smoke collecting hood 5, and the output shaft 41 of the driving motor 4 is connected with a link of the transmission link set 31 to drive the transmission link set 31 to move. That is, the transmission link set 31 can adopt the structure of an existing link assembly.

[0102] Specifically, the first end of the driving link 311 is fixedly connected to the back side of the flap assembly 1, and the second end of the driving link 311 is hingedly connected to the inner side of the smoke collecting hood 5. The driving link 311 is at least partially a bent link structure that is bent inwardly and rearwardly. The front side of the smoke collecting hood 5 is open, and the upper end edge of the front side is located in the concave space of the arc-shaped structure. Thus, the connection of the driving link 311 with the flap assembly 1 and the smoke collecting hood 5 is facilitated. Further, the front side cavity wall of the smoke collecting cavity 53 is provided with a plate mounting seat 9, and the back side of the smoke collecting plate 11 is provided with a mounting support 13. The first end of the driving link 311 is connected to the mounting support 13, and the second end is hingedly connected to the plate mounting seat 9.

[0103] The driving link 311 includes a main link 3111 and a mounting plate 3112. The main link 3111 is at least partially bent rearwardly, and the lower end of the main link 3111 is connected to the flap assembly 1 and the upper end is connected to the smoke collecting hood 5. The mounting plate 3112 is detachably connected to the main link 3111, and the output shaft 41 is connected to the mounting plate 3112. By providing the detachably connected main link 3111 and mounting plate 3112, the connection position of the driving motor 4 on the driving link 311 can be set and adjusted, thereby improving the convenience and reliability of the connection of the driving motor 4 with the driving link 311. In other embodiments, the main link 3111 and the mounting plate 3112 can be integrally formed.

[0104] Specifically, the mounting plate 3112 is connected to the rear bent portion of the driving rod 311, and the output shaft 41 is arranged at the rear side of the first end of the main rod 3111 in the front-rear direction and between the two ends of the main rod 3111 in the vertical direction, i.e., the rotation axis of the flap assembly 1, the connection position of the mounting plate 3112 and the main rod 3111, and the output shaft 41 are sequentially arranged from front to back.

[0105] The driving motor 4 is higher than the upper end of the smoke collecting cavity 2, the upper end of the driven rod 312 is connected to the driving motor 4, and the driven rod 312 extends downward from top to bottom and the front end is connected to the linkage rod 32. When the output shaft 41 of the driving motor 4 rotates, the main rod 3111 is driven by the driving motor 4 to rotate the lower end forward, and the driving motor 4 as a whole moves downward, thereby moving the upper end of the driven rod 312 downward, driving the lower end of the driving motor 4 to move forward, i.e., driving the upper end of the smoke collecting cavity 2 to move forward. In other embodiments, the driven rod 312 can also be a bent rod structure or other forms of rod structure.

[0106] In order to improve the convenience of connecting the driven rod 312 and the driving motor 4, the motor shell 43 of the driving motor 4 is provided with a protruding shaft 42, and the upper end of the driven rod 312 is rotatably sleeved on the protruding shaft 42. The protruding shaft 42 and the output shaft 41 are respectively arranged on opposite sides of the motor shell 43 to improve the reliability of transmission and reduce the probability of interference between the driving rod 311 and the driven rod 312. The axes of the protruding shaft 42 and the output shaft 41 are parallel and spaced apart to avoid dead points during movement and improve the driving reliability of the driving motor 4 on the flap assembly 1 and the smoke collecting cavity 2. Further, when the smoke collecting device 100 is in the closed state, in the front-rear direction, the protruding shaft 42 is located on the front side of the output shaft 41, and the driven rod 312 is located on the front side of the driving motor 4 as a whole.

[0107] In order to further improve the operation stability of the smoke collecting cavity 2, the transmission rod group 31 further comprises a supporting rod 313, the lower end of the supporting rod 313 is connected to the linkage rod 32 and the upper end is connected to the smoke collecting cover 5. The inner side of the smoke collecting cover 5 is provided with a fixed seat 20, and the upper end of the supporting rod 313 is hinged to the fixed seat 20. This arrangement allows the upper end of the flip chamber to be supported on the smoke collecting cover 5 by the supporting rod 313, avoiding the problem that the upper end of the smoke collecting cavity 2 is only suspended and supported on the driving motor 4 by the driven rod 312, causing the driving motor 4 to be subjected to excessive stress and thus damaged. The supporting rod 313 is preferably a U-shaped structure with the opening facing forward, which is beneficial to avoid interference between the supporting rod 313 and the smoke collecting cover 5.

[0108] In the embodiment, the transmission rod set 31 further comprises a limiting rod 314, a first end of the limiting rod 314 is connected to the linkage rod 32 and a second end of the limiting rod 314 is hingedly connected to the driving rod 311, the limiting rod 314 limits the maximum turning angle of the smoke collection cavity 2 and the flap assembly 1, the hinging axis of the second end of the limiting rod 314 is parallel to and spaced apart from the hinging axis of the first end of the driven rod 312. When the driving motor 4 drives the linkage rod 32 to move, the movement of the linkage rod 32 drives the limiting rod 314 to rotate relative to the driving rod 311, because the limiting rod 314 is hingedly connected to the driving rod 311, the rotation stroke of the smoke collection cavity 2 is limited by the limiting rod 314, thereby the movement stroke of the smoke collection cavity 2 is limited by the limiting rod 314, so as to limit the maximum opening angle of the flap assembly 1 relative to the smoke collection cover 5.

[0109] The limiting rod 314 is preferably in an arc-shaped structure with an opening facing forward, which is simple in structure and convenient to set. However, it can be understood that the shape of the limiting rod 314 can be specifically limited according to the maximum stroke required by the flap assembly 1 to open. When the flap assembly 1 is closed to the smoke inlet 24, in the front-rear direction, the first end of the limiting rod 314, the first end of the driven rod 312 and the output shaft 41 are sequentially and spaced apart from front to back, and in the vertical direction, the axis of the output shaft 41 is located between the two ends of the limiting rod 314, thereby increasing the length of the limiting rod 314 on the basis of the relative positions of the linkage rod 32 and the driving motor 4 being unchanged, so as to avoid the problem that the maximum turning angle of the smoke collection cavity 2 is small due to the limiting rod 314 being too short.

[0110] The driving motor 4 is connected between the driving rod 311 and the corresponding driven rod 312 of a transmission rod set 31, and the other driving rod 311 and the driven rod 312 are connected in linkage through a connecting assembly 316. Specifically, the connecting assembly 316 comprises a connecting plate 3161 and first and second shaft portions 3162 and 3163 protrudingly provided on opposite sides of the connecting plate 3161, the first shaft portion 3162 is connected with the driving rod 311, and the second shaft portion 3163 is hingedly connected with the driven rod 312; the first shaft portion 3162 is coaxially arranged with the output shaft 41, and the second shaft portion 3163 is coaxially arranged with the protruding shaft 42. Thus, the two sets of transmission rod sets 31 can be synchronously actuated. In other embodiments, the driving rod 311 and the driven rod 312 in the two sets of turning linkage mechanisms 3 can be connected by the driving motor 4.

[0111] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A smoke-collecting cavity, characterized in that, It includes two smoke-collecting sides (21) that are arranged opposite to each other and spaced apart, and a smoke-collecting top (22) connected between the top ends of the two smoke-collecting sides (21). The smoke-collecting top (22) and the two smoke-collecting sides (21) together form a smoke inlet (24). The smoke-collecting top (22) has a rear oil guide surface (2211) that extends downward from front to back.

2. The smoke-collecting cavity according to claim 1, characterized in that, The rear oil guide surface (2211) extends downward in an arc shape from front to back in at least a portion; And / or, the upper side of the smoke collection top (22) has a front oil guide surface (2221) extending downward from back to front, and the rear end of the front oil guide surface (2221) is connected to the front end of the rear oil guide surface (2211).

3. The smoke-collecting cavity according to claim 2, characterized in that, The smoke collection top (22) includes a front guide oil plate (222) and a rear guide oil plate (221) connected to the rear end of the front guide oil plate (222). The upper side of the front guide oil plate (222) forms the front guide oil surface (2221), and the upper side of the rear guide oil plate (221) forms the rear guide oil surface (2211). Alternatively, the top of the smoke collection box (22) may be a solid structure or a circumferentially closed hollow structure.

4. The smoke-collecting cavity according to claim 3, characterized in that, The front end of the front guide oil plate (222) is connected to a smoke baffle (223), which extends toward the rear guide oil plate (221). In the front-rear direction, the front end of the rear guide oil plate (221) is spaced apart from the rear end of the smoke baffle (223).

5. The smoke-collecting cavity according to any one of claims 1-4, characterized in that, The smoke collection cavity includes a bottom frame (23) connected between the two smoke collection sides (21). The bottom frame (23) has a bottom groove (231) with an open bottom opening. The lower end of the smoke collection side (21) is provided with a mounting shaft hole (2112) communicating with the bottom groove (231). And / or, the smoke-collecting side portion (21) includes a side frame portion (211) and a side baffle portion (212) connected to the rear side of the side frame portion (211), the thickness of the side frame portion (211) is greater than the rear end of the side baffle portion (212), and the smoke-collecting top portion (22) extends from the front end of the side frame portion (211) to the rear end of the side baffle portion (212).

6. A fume extraction device, characterized in that, include: The smoke hood (5) has a connected front opening and a smoke collection chamber (53); The smoke collection cavity as described in any one of claims 1-5 is provided directly opposite the front opening and is movably installed on the smoke collection hood (5), the upper end of the smoke collection cavity can extend forward out of the front opening, and the smoke inlet (24) is connected to the smoke collection cavity (53); The flap assembly (1) is rotatably mounted on the front side of the smoke collection hood (5) and can open or close the smoke inlet (24) and the front opening.

7. The fume extraction device according to claim 6, characterized in that, The smoke hood (5) has a front plate (511) forming the front wall of the smoke collection chamber (53). The front plate (511) has a front opening. An oil guide (512) is connected to the upper edge of the front opening. The oil guide (512) extends downward from front to back, and the rear end of the oil guide (512) is located on the upper side of the rear oil guide surface (2211). And / or, the flap assembly (1) includes a smoke gathering plate (11) and a smoke guide protrusion (12) protruding from the back side of the smoke gathering plate (11). The smoke guide protrusion (12) has a smoke guide surface (121) on the side away from the smoke gathering plate (11). The smoke gathering plate (11) can close the smoke inlet (24) and the front opening. When the smoke gathering plate (11) closes the smoke inlet (24), the smoke guide protrusion (12) is located inside the smoke inlet (24).

8. The fume extraction device according to claim 7, characterized in that, The top of the smoke guide protrusion (12) has an oil guide top surface (123), and the front end of the smoke gathering top (22) is located above the oil guide top surface (123). When the smoke gathering plate (11) opens the smoke inlet (24), the oil guide top surface (123) tends to extend downward from front to back. And / or, when the smoke-collecting plate (11) opens the smoke inlet (24), the upper rear side of the smoke guide protrusion (12) extends into the smoke inlet (24).

9. The fume extraction device according to claim 8, characterized in that, The top of the smoke collection (22) has a front oil guide surface (2221) extending downward from back to front. The rear end of the front oil guide surface (2221) is connected to the front end of the rear oil guide surface (2211). The lower end of the front oil guide surface (2221) is located on the upper side of the top surface of the oil guide surface (123). And / or, when the smoke gathering plate (11) closes the smoke inlet (24), the top surface of the oil guide (123) extends downward from front to back; And / or, the top surface of the oil guide (123) has a recessed section (1231) that is recessed in a direction away from the top of the smoke collector (22).

10. The fume extraction device according to claim 7, characterized in that, The smoke guiding surface (121) includes an upper smoke guiding section and a lower smoke guiding section that are smoothly connected. The upper smoke guiding section is a curved surface that is recessed toward the smoke gathering plate (11), and the lower smoke guiding section is a curved surface that protrudes away from the smoke gathering plate (11). Alternatively, the smoke guiding surface (121) is an arc-shaped surface that is concave in the direction toward the smoke gathering plate (11); Alternatively, the smoke guiding surface (121) is an inclined surface that is inclined relative to the smoke gathering plate (11), and the lower end of the smoke guiding surface (121) is provided with an arc-shaped protrusion (122), which extends in the left and right direction; Alternatively, the smoke guiding surface (121) is an inclined surface that is tilted relative to the smoke gathering plate (11), and the lower end of the smoke guiding surface (121) is recessed with an arc-shaped groove that extends along the left-right direction.

11. The fume extraction device according to any one of claims 6-10, characterized in that, The fume extraction device also includes a driving component and a transmission rod assembly (31). The upper end of the flap assembly (1) is rotatably mounted on the fume hood (5) via the transmission rod assembly (31), and the driving component drives the transmission rod assembly (31) to move so that the flap assembly (1) flips. The front side of the smoke collection hood (5) is provided with an avoidance opening, and the back side of the flap assembly (1) is connected to an oil baffle (7). The oil baffle (7) extends backward and passes through the avoidance opening. The oil baffle (7) has an open oil baffle cavity (72). The transmission rod assembly (31) is located at least on its lower side in the oil baffle cavity (72).

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