Ceiling type range hood

Abstract

The utility model discloses a ceiling type range hood which comprises an exhaust fume collecting hood, a main air inlet and an oil screen sinking table located on the periphery of the main air inlet are arranged at the bottom of the exhaust fume collecting hood, the oil screen sinking table is provided with a front edge and two side edges, and a mounting opening is formed in the top of the exhaust fume collecting hood; the lower end of the box body assembly penetrates through the mounting opening from top to bottom, the box body assembly comprises a surrounding plate, the surrounding plate is provided with a front plate and two side plates, the lower end of the front plate is provided with an oil guide part extending backwards, and the oil guide part abuts against or is connected with the front edge. According to the ceiling type range hood, the strength of the coaming is enhanced, and meanwhile oil accumulation of the front plate of the coaming can be avoided.

Description

Technical Field

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

[0002] In order to reduce the cost of the whole machine, some existing range hoods adopt a single-layer enclosure structure. The enclosure structure is weak in strength and is easy to impact and deform other parts during a drop test.

[0003] After long-term use, the inner wall of the enclosure is easily covered with oil stains, which will drip directly through the oil net and affect the user experience. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a top-suction range hood, which strengthens the strength of the enclosure and avoids oil accumulation on the front plate of the enclosure, thereby solving the problem of oil stains on the enclosure directly dripping downwards through the oil net.

[0005] According to the above-mentioned top suction range hood, it is realized by the following technical solution:

[0006] A ceiling-suction range hood comprises: a smoke hood with a smoke collecting chamber, a main air inlet and an oil net sink located at the periphery of the main air inlet are arranged at the bottom of the smoke hood, the oil net sink has a front edge and two side edges, a mounting port is arranged at the top of the smoke hood, the mounting port and the main air inlet are respectively connected to the smoke collecting chamber; a box assembly, the lower end of which is passed through the mounting port from top to bottom, the box assembly comprises a surrounding plate, the surrounding plate has a front plate and two side plates, an oil guide portion extending rearward is arranged at the lower end of the front plate, the oil guide portion is abutted or connected to the front edge.

[0007] In some embodiments, the oil guide portion includes a connecting section and an inclined section, the inclined section is extended from front to back and is arranged to be inclined downward, the high end of the inclined section is fixedly connected to the lower edge of the front plate through the connecting section, and the low end is arranged at the top of the front edge and abuts or is connected to the front edge.

[0008] In some embodiments, an upwardly extending flange is provided at one end of the oil guide portion close to the main air inlet, an oil leakage port is provided at the left end and / or right end of the flange, or an oil leakage port is provided outside the left side and / or right side of the flange, and the oil leakage port is used to drain the oil on the upper surface of the oil guide portion to the front edge.

[0009] In some embodiments, bosses extending upward are respectively provided at the left and right ends of the oil guide portion, and the bosses are located at the top of the front edge and connected to the front edge.

[0010] In some embodiments, an oil net installation area is provided at the left and right ends of the front side, respectively, and a gap is provided at a position at the rear end of the oil guide portion corresponding to the oil net installation area.

[0011] In some embodiments, the box assembly also includes a top plate, which is disposed at the inner upper end of the enclosure and connected to the enclosure, and a vertically arranged support column is provided between the top plate and the oil guide portion, and the upper and lower ends of the support column are respectively connected to the top plate and the oil guide portion.

[0012] In some embodiments, two side air inlets connected to the smoke collecting chamber are provided at the bottom of the smoke collecting hood, and the two side air inlets are respectively located on the left and right outer sides of the main air inlet; and / or the lower ends of the two side panels extend downward to form partitions, and the two partitions are respectively connected to the two side edges of the oil net sink, and divide the smoke collecting chamber into a middle cavity and two side cavities, and the middle cavity is connected to the main air inlet.

[0013] In some embodiments, the partition is provided with at least one vent for smoke to pass through, and the middle cavity is connected to the side cavity through the vent.

[0014] In some embodiments, a vertical edge extending upward is integrally formed on one side of the side edge close to the main air inlet, and the lower end of the partition is inserted into the main air inlet and connected to the vertical edge, or the lower end of the partition is inserted between the vertical edge and the side edge and connected to the vertical edge.

[0015] In some embodiments, at least one first notch is provided at the upper end of the vertical edge, and a positioning protrusion extending toward the vertical edge is provided at a position of the partition corresponding to the first notch, the lower end of the positioning protrusion is inserted into the first notch, and the upper end abuts against the top of the smoke hood.

[0016] In some embodiments, two reinforcing plates are further included, both of which are arranged in the smoke collecting chamber and located on the left and right outer sides of the main air inlet, the front end of the reinforcing plate is connected to the front of the smoke collecting hood, and the rear end is connected to the lower end of the side plate and / or the side. In some embodiments, an oil drain port and / or a lower folding edge is provided at the rear side of the lower end of the reinforcing plate, the oil drain port is arranged corresponding to the corner of the oil net sink, the lower folding edge is provided at the top of the side and connected to the side; and / or, an upper folding edge is provided at the upper end of the reinforcing plate, and the upper folding edge is abutted against the top of the smoke collecting hood.

[0017] In some embodiments, a fixing hole and / or a second notch opening toward the rear is provided at the rear end of the reinforcing plate; and / or a front folded edge bent downward is provided at the front end of the reinforcing plate, and the front folded edge is connected to the front side of the smoke hood.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. The top suction range hood of the utility model is provided with an oil guide portion at the lower end of the front plate of the enclosure, and the oil guide portion extends backward to the front top of the oil net sinking platform and abuts or connects with the oil net sinking platform, so as to strengthen the strength of the front plate of the enclosure, make the connection between the enclosure and the smoke hood more firm and reliable, and secondly, realize the drainage of oil stains on the front plate of the enclosure to the front of the oil net sinking platform, avoid oil accumulation on the front plate of the enclosure, and solve the problem that the oil stains on the enclosure directly drip downward through the oil net;

[0020] 2. The side panels of the enclosure are extended downward to form a partition, which is connected to the side of the oil net sink, so as to divide the smoke collecting chamber into chambers, strengthen the side panel strength of the enclosure, and further improve the connection strength between the enclosure and the smoke collecting hood;

[0021] 3. By providing a positioning protrusion on the partition, the positioning protrusion is configured to abut against the top of the oil net sink and the smoke hood respectively, so as to further enhance the overall strength of the enclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an exploded view of the range hood in the embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of the range hood in the embodiment of the utility model. Figure 1 ;

[0024] Figure 3 It is a cross-sectional view of the range hood in the embodiment of the utility model. Figure 2 ;

[0025] Figure 4 It is a partial structural schematic diagram of the range hood in the embodiment of the utility model after the left side cover is hidden;

[0026] Figure 5 It is a structural schematic diagram of the enclosure in the embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the smoke collecting hood in the embodiment of the utility model;

[0028] Figure 7 It is an exploded view of the smoke collecting hood and the reinforcing plate in the embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of a reinforcing plate in an embodiment of the utility model;

[0030] Fig. 9 It is an exploded view of another range hood in the embodiment of the utility model.

[0031] In the figure: 1-smoke hood, 101-bottom shell, 102-side cover, 1021-upper flange, 103-front cover, 11-smoke chamber, 111-main air inlet, 112-side air inlet, 12-oil net sink, 121-front, 1211-oil net installation area, 122-side, 1221-vertical edge, 1222-first notch, 13-installation port; 2-box assembly, 21-front plate, 211-oil guide part, 2111-connecting section, 2112- Inclined section, 212-flange, 213-oil leakage port, 214-boss, 215-air avoidance portion, 22-side plate, 221-partitioning portion, 222-vent, 223-positioning protrusion, 224-flange edge, 23-back plate, 24-top plate, 25-support column; 3-reinforcement plate, 311-lower folding edge, 312-upper folding edge, 313-front folding edge, 314-supporting edge, 32-oil drain port, 33-fixing hole, 34-second notch; 4-oil net assembly. DETAILED DESCRIPTION

[0032] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation methods of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0033] Example 1

[0034] refer to Figure 1-2 The present embodiment provides a top suction range hood, comprising a smoke collecting hood 1 and a box assembly 2. The smoke collecting hood 1 has a smoke collecting cavity, and a smoke collecting cavity 11 which is recessed toward the inside and open downward is provided at the bottom of the smoke collecting hood 1. The smoke collecting cavity 11 is an expanded structure with a small upper end and a large lower end. The top surface and the left and right side surfaces of the smoke collecting cavity 11 constitute a smoke inlet surface. A main air inlet 111 and an oil net sinking platform 12 located at the periphery of the main air inlet 111 are provided on the top surface of the smoke collecting cavity 11. The smoke collecting cavity is connected to the smoke collecting cavity 11 through the main air inlet 111, and an oil net assembly 4 is detachably installed at the main air inlet 111. The oil net sinking platform 12 has a front edge 121 and two side edges 122, and the left and right ends of the front edge 121 are respectively connected to the front ends of the two side edges 122. A mounting port 13 which is connected to the smoke collecting cavity is provided at the top of the smoke collecting hood 1, and the mounting port 13 is suitable for assembling the box assembly 2.

[0035] The lower end of the box assembly 2 is passed through the installation opening 13 from top to bottom and connected to the smoke hood 1. The box assembly 2 includes a rearwardly opened enclosure and a back plate 23. The back plate 23 is arranged behind the enclosure and is detachably connected to the smoke hood 1 and the enclosure, respectively. In this embodiment, a variety of profiles are provided on the back plate 23 to enhance the strength of the back plate 23. The enclosure has a front plate 21 and two side plates 22. The two side plates 22 are formed by integrally bending the left and right ends of the front plate 22 backward. An oil guide portion 211 extending backward is provided at the lower end of the front plate 21. The free end of the oil guide portion 211 extends to the top of the front edge 121 of the oil net sinking platform 12 and abuts or connects with the front edge 121 of the oil net sinking platform 12. Therefore, through the provision of the oil guide part 211, the strength of the front plate 21 of the enclosure is strengthened, so that the connection between the enclosure and the smoke hood 1 is more firmly and reliably prevented from falling and deformation. At the same time, the oil on the inner surface of the front plate 21 can be drained to the front edge 121 of the oil net sinking platform 12, avoiding oil accumulation on the front plate 21 of the enclosure, and solving the problem of oil on the enclosure directly dripping down through the oil net.

[0036] refer to Figure 1-2 and Figure 5 In this embodiment, the oil guide portion 211 is formed by the lower end of the front plate 21 being bent backwards as a whole, and the oil guide portion 211 includes a connecting section 2111 and an inclined section 2112. The connecting section 2111 can be arranged horizontally, or can be arranged to extend from front to back and be inclined downwards, and its inclination angle is smaller than that of the inclined section 2112. The inclined section 2112 is arranged to extend from front to back and be inclined downwards, and the high end of the inclined section 2112 is fixedly connected to the lower edge of the front plate 21 through the connecting section 2111, and the low end is arranged at the top of the front edge 121 of the oil net sinking platform 12 and abuts or is connected to the front edge 121 of the oil net sinking platform 12.

[0037] Furthermore, an end of the oil guide portion 211 close to the main air inlet is provided with a flange 212 extending upward, that is, a flange 212 bent upward is integrally formed at the lower end of the inclined section 2112, and the flange 212 serves as an oil barrier. In order to facilitate the drainage of oil stains on the oil guide portion 211 to a set position, oil leakage ports 213 are respectively provided at the left and right ends of the flange 212, and oil leakage ports 213 are respectively provided on the left and right outer sides of the flange 212, so that four oil leakage ports 213 are formed on the oil guide portion 211. Through the cooperation of the flange 212 and the oil leakage ports 213, the oil stains on the upper surface of the oil guide portion 211 can be drained to the left and right ends of the front edge 121, and finally flow to the rear of the smoke collecting chamber. Of course, the number of oil leakage ports 213 can also be one or two, which can be set on the left or right end of the flange 212, or on the left or right outside of the flange 212.

[0038] Furthermore, an oil net installation area 1211 is provided at the left and right ends of the front side 121, and a lock (not shown in the figure) is fixedly installed on the top of the oil net installation area 1211. The oil net assembly 4 is locked or unlocked with the front side 121 of the oil net sink 12 through the lock. In order to prevent the setting of the oil guide part 211 from affecting the installation of the lock, a clearance part 215 is provided at the rear end of the oil guide part 211 (i.e., at the lower end of the inclined section 2112) corresponding to the position of the oil net installation area 1211. Oil leakage ports 213 are provided on the left and right outer sides of the clearance part 215, so that the oil on the upper surface of the oil guide part 211 first flows to the oil net installation area 1211 through the oil leakage port 213, and finally flows to the rear of the smoke collecting chamber.

[0039] Furthermore, bosses 214 extending upward are respectively provided at the left and right ends of the inclined section 2112 of the oil guide portion 211. The bosses 214 are located at the top of the front edge 121 of the oil net sinking platform 12 and are connected to the front edge 121 of the oil net sinking platform 12 through a connecting piece (such as a screw). In this way, with the cooperation of the two bosses 214 and the two connecting pieces, the oil guide portion 211 can be detachably installed on the oil net sinking platform 12. In this embodiment, an oil leakage port 213 is formed between the boss 214 and the end of the flange 212. Of course, a connecting piece (such as a screw) can also be used to fix the middle part of the inclined section 2112 in the left and right directions to make the installation of the oil guide portion 211 more secure and reliable.

[0040] refer to Figure 2 In this embodiment, the box assembly 2 further includes a top plate 24 and a support column 25. The top plate 24 is disposed at the inner upper end of the enclosure and is respectively connected to the enclosure and the back plate 23, and is used to support the air outlet seat of the range hood. The support column 25 is vertically disposed at the corner of the enclosure 1 and is located between the top plate 24 and the oil guide portion 211. The upper and lower ends of the support column 25 are respectively connected to the top plate 24 and the oil guide portion 211, and are used to reliably support the top plate 24 while strengthening the enclosure strength to prevent the enclosure from falling and deforming.

[0041] refer to Figure 1-2 and Figure 6-7 In the present embodiment, the smoke hood 1 is composed of a bottom shell 101 and a surface cover assembly, and the surface cover assembly is covered on the top of the bottom shell 101 and together form a smoke collecting chamber. A smoke collecting chamber 11, a main air inlet 111 and an oil net sinking platform 12 are provided at the bottom of the bottom shell 101, and a mounting port 13 is provided on the surface cover assembly. The surface cover assembly is composed of two side covers 102 and a front cover 103, and the two side covers 102 are respectively arranged at the left and right ends of the top of the bottom shell 101 and are located on the left and right outer sides of the box assembly 2, and the two side covers 102 are respectively detachably connected to the box assembly 2 and the bottom shell 101. The front cover 103 is arranged on the front side of the box assembly 2, and its left and right ends are respectively detachably connected to the bottom shell 101.

[0042] Furthermore, a downwardly bent upper flange 1021 is integrally formed on one side of the side cover 102 close to the box assembly 2 or the installation opening 13 . The upper flange 1021 abuts against the side plate 22 of the box assembly 2 , and the two are fastened together by a connector (such as a screw).

[0043] Example 2

[0044] refer to Figure 1-5 The difference between this embodiment and embodiment 1 is that the lower ends of the two side panels 22 extend downward to form partitions 221, and the two partitions 221 are not only connected to the two side edges 122 of the oil net sink 12, but also connected to the two side covers 102 of the smoke hood 1. In this embodiment, the two partitions 221 divide the smoke collecting chamber into a middle cavity and two side cavities, and the middle cavity is connected to the main air inlet 111. In this way, through the setting of the partitions 221, the smoke collecting chamber can be divided into chambers, and the strength of the side panels 22 of the enclosure can be strengthened, thereby further improving the connection strength between the enclosure and the smoke hood 1.

[0045] Furthermore, two side air inlets 112 connected to the smoke collecting cavity are provided on the smoke inlet surface of the smoke collecting hood 1, that is, side air inlets 112 are provided on the left and right sides of the smoke collecting cavity 11, so that the two side air inlets 112 are respectively located on the left and right outer sides of the main air inlet 111, and the two side air inlets 112 are respectively connected to the two side cavities. At least one vent 222 for smoke to pass through is provided on the partition 221, and the middle cavity is connected to the side cavity through the vent 222. As a result, the range hood has a three-cavity structure with three smoking channels, which increases the unit air inlet area, reduces the escape of oil smoke on both sides, and improves the smoke collecting effect.

[0046] refer to Figure 2-7, further, upper flanges 1021 extending downward are respectively provided on the left and right outer sides of the installation opening 13, that is, upper flanges 1021 extending downward are integrally formed on the side of the two side covers 102 close to the box assembly 2, and the upper flanges 1021 are detachably connected to the upper end of the partition 221 by screws. In addition, a vertical edge 1221 extending upward is integrally formed on the side of the side 122 close to the main air inlet 111, and the lower end of the partition 221 is inserted into the main air inlet 111 and connected to the vertical edge 1221. At this time, the lower end of the partition 221 extends to the top of the oil net assembly 4 and is located outside the filter hole of the oil net assembly 4. In this way, the side plate 22 is firmly and reliably connected to the oil net sink 12, and the oil on the side plate 22 is drained to the oil net assembly 4, and then the oil is drained to the rear of the smoke hood 1 through the oil net assembly 4, solving the problem of the oil on the enclosure directly dripping down through the oil net. Of course, the lower end of the partition 221 can also be designed to be inserted between the vertical edge 1221 and the side edge 122 and connected to the vertical edge 1221, so as to drain the oil on the side panel 22 to the side edge 122 of the oil net sink 12, and finally flow to the rear of the smoke hood 1.

[0047] In this embodiment, two first notches 1222 opening upward are provided at the upper end of the vertical edge 1221, and the two first notches 1222 are arranged at intervals in the front-to-back direction. A positioning protrusion 223 extending toward the vertical edge 1221 is provided at the position of the partition 221 corresponding to the first notch 1222. In this embodiment, the positioning protrusion 223 is formed by stamping a part of the partition 221 toward the positioning protrusion 223, and a vent 222 is provided on the positioning protrusion 223. In this way, the strength of the side plate 22 itself is enhanced, and the middle cavity and the side cavity are connected.

[0048] During installation, the lower end of the positioning protrusion 223 is inserted into the first notch 1222 to make the positioning protrusion 223 abut against the peripheral wall of the first notch 1222, so as to achieve the lower limit and front and rear limit of the side panel 22. The upper end of the positioning protrusion 223 abuts against the upper flange 1021 of the smoke hood 1, so as to achieve the upper limit of the side panel 22 and reliably support the side cover 102. It can be seen that by sandwiching the positioning protrusion 223 between the vertical edge 1221 and the upper flange 1021, and connecting the partition 221 to the vertical edge 1221 and the upper flange 1021 respectively, the strength of the side panel 22 is effectively strengthened, and the reliability of the connection between the side panel 22 and the smoke hood 1 is strengthened.

[0049] Example 3

[0050] refer to Figure 3-4 and Figure 7-8The difference between this embodiment and the second embodiment is that the range hood further comprises two reinforcing plates 3, both of which are arranged in the smoke collecting chamber and located at the left and right outer sides of the main air inlet 111, and the front end of each reinforcing plate 3 is respectively connected to the front of the bottom shell 101 and the front cover 103 of the smoke collecting hood 1, and the rear end is connected to the lower end of the side plate 22 and / or the side 122 of the oil net sink 12. Therefore, by adding the reinforcing plates 3, the strength of the whole machine is further strengthened to prevent it from falling and deforming.

[0051] Furthermore, an oil drain port 32 and / or a lower folding edge 311 are provided at the lower side of the rear end of the reinforcing plate 3. The oil drain port 32 is arranged corresponding to the corner of the oil net sinking platform 12, so that the oil dirt at the front edge 121 of the oil net sinking platform 12 flows to the side edge 122 of the oil net sinking platform 12 through the oil drain port 32, and finally flows to the rear of the smoke hood 2. The lower folding edge 311 is arranged at the top of the side edge 122 of the oil net sinking platform 12 and connected to the side edge 122 of the oil net sinking platform 12, so that the rear end of the reinforcing plate 3 can be reliably connected to the oil net sinking platform 12. An upper folding edge 312 is provided at the upper end of the reinforcing plate 3, and the upper folding edge 312 abuts against the top of the smoke hood 1 (i.e., the side cover 102) for reliably supporting the side cover 102. In addition, a supporting edge 314 extending toward the bottom of the front cover 103 is provided at the lower side of the front end of the reinforcing plate 3, and the supporting edge 314 abuts against the bottom of the front cover 103 and is detachably connected to the front cover 103.

[0052] Furthermore, a front folded edge 313 bent downward is provided at the front end of the reinforcing plate 3, and the front folded edge 313 is connected to the front side of the bottom shell 101 of the smoke hood 1. A fixing hole 33 and / or a second notch 34 opening toward the rear is provided at the rear end of the reinforcing plate 3, and the second notch 34 is used to cooperate and plug with the positioning protrusion 223 on the side plate 22, so that the rear end of the reinforcing plate 3 clamps the front end of the positioning protrusion 223 arranged close to it, so as to realize the pre-positioning of the reinforcing plate 3, which is beneficial to further strengthen the strength of the side plate 22 of the enclosure. Fasteners (such as screws) are inserted into the fixing holes 33 and fastened to the side plate 22, so as to realize the reliable connection of the reinforcing plate 3 to the side plate 22.

[0053] Example 4

[0054] refer to Fig. 9 The difference between this embodiment and embodiment 2 or 3 is that the two side air inlets 112 and the vent 222 on the partition 221 are omitted. At this time, the end of the positioning protrusion 223 close to the side cavity is closed so that the middle cavity and the side cavity cannot be connected through the positioning protrusion 223. In this way, after the smoke collecting cavity is divided into the middle cavity and two side cavities by the two partitions 221, the suction force of the range hood fan is concentrated in the middle cavity, which significantly improves the smoking performance at the middle cavity and the main air inlet.

[0055] Of course, the partition 221 at the lower end of the side plate 22 may be omitted to avoid reducing the smoking performance at the two side air inlets 112 due to the provision of the partition 221 .

[0056] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A top suction range hood, characterized in that: include: A smoke collecting hood (1) having a smoke collecting chamber, wherein a main air inlet (111) and an oil net sinking platform (12) located outside the main air inlet (111) are provided at the bottom of the smoke collecting hood (1), the oil net sinking platform (12) having a front edge (121) and two side edges (122), and a mounting opening (13) is provided at the top of the smoke collecting hood (1), the mounting opening (13) and the main air inlet (111) are respectively connected to the smoke collecting chamber; The box assembly (2) has a lower end that passes through the installation opening (13) from top to bottom. The box assembly (2) includes a panel, the panel having a front panel (21) and two side panels (22). An oil guide portion (211) extending rearward is provided at the lower end of the front panel (21), and the oil guide portion (211) is in contact with or connected to the front edge (121).

2. A top suction range hood according to claim 1, characterized in that: The oil guide portion (211) comprises a connecting section (2111) and an inclined section (2112), wherein the inclined section (2112) is arranged to extend from front to back and to be inclined downward, wherein a high end of the inclined section (2112) is fixedly connected to the lower edge of the front plate (21) through the connecting section (2111), and a low end is arranged at the top of the front edge (121) and is in contact with or connected to the front edge (121).

3. A top suction range hood according to claim 1 or 2, characterized in that: An end of the oil guide portion (211) close to the main air inlet is provided with a flange (212) extending upward, and an oil leakage port (213) is provided at the left end and / or the right end of the flange (212), or an oil leakage port (213) is provided outside the left side or / and the right side of the flange (212), and the oil leakage port (213) is used to drain the oil on the upper surface of the oil guide portion (211) to the front edge (121).

4. A top suction range hood according to claim 1 or 2, characterized in that: Bosses (214) extending upward are respectively provided at the left and right ends of the oil guide portion (211); the bosses (214) are located at the top of the front edge (121) and are connected to the front edge (121).

5. A top suction range hood according to claim 1 or 2, characterized in that: An oil net installation area (1211) is provided at the left and right ends of the front edge (121), and a gap avoidance portion (215) is provided at a position corresponding to the oil net installation area (1211) at the rear end of the oil guide portion (211).

6. The top suction range hood according to claim 1, characterized in that: The box assembly (2) further comprises a top plate (24), the top plate (24) being arranged at the inner upper end of the enclosure and connected to the enclosure, a vertically arranged support column (25) being provided between the top plate (24) and the oil guide portion (211), the upper and lower ends of the support column (25) being respectively connected to the top plate (24) and the oil guide portion (211).

7. The top suction range hood according to claim 1, characterized in that: Two side air inlets (112) connected to the smoke collecting chamber are also provided at the bottom of the smoke collecting hood (1), and the two side air inlets (112) are respectively located on the left and right outer sides of the main air inlet (111); and / or The lower ends of the two side panels (22) extend downward to form partitions (221), respectively. The two partitions (221) are respectively connected to the two side edges (122) of the oil net sink (12), and divide the smoke collecting chamber into a middle cavity and two side cavities. The middle cavity is connected to the main air inlet (111).

8. The top suction range hood according to claim 7, characterized in that: The partition (221) is provided with at least one vent (222) for smoke to pass through, and the middle cavity is connected to the side cavity through the vent (222).

9. A top suction range hood according to claim 7 or 8, characterized in that: A vertical edge (1221) extending upward is integrally formed on one side of the side edge (122) close to the main air inlet (111), and the lower end of the partition (221) is inserted into the main air inlet (111) and connected to the vertical edge (1221), or the lower end of the partition (221) is inserted between the vertical edge (1221) and the side edge (122) and connected to the vertical edge (1221).

10. The top suction range hood according to claim 9, characterized in that: At least one first notch (1222) is provided at the upper end of the vertical edge (1221); a positioning protrusion (223) extending toward the vertical edge (1221) is provided at a position of the partition (221) corresponding to the first notch (1222); the lower end of the positioning protrusion (223) is inserted into the first notch (1222), and the upper end abuts against the top of the smoke hood (1).

11. A top suction range hood according to claim 1, 6 or 7, characterized in that: It also includes two reinforcing plates (3), both of which are arranged in the smoke collecting chamber and located on the left and right outer sides of the main air inlet (111), the front end of the reinforcing plate (3) is connected to the front side of the smoke collecting hood (1), and the rear end is connected to the lower end of the side plate (22) and / or the side edge (122).

12. The top suction range hood according to claim 11, characterized in that: An oil drain port (32) and / or a lower folded edge (311) is provided at the rear side of the lower end of the reinforcing plate (3), the oil drain port (32) being arranged corresponding to the corner of the oil net sink (12), the lower folded edge (311) being arranged at the top of the side edge (122) and connected to the side edge (122); and / or an upper folded edge (312) is provided at the upper end of the reinforcing plate (3), the upper folded edge (312) being in contact with the top of the smoke hood (1).

13. The top suction range hood according to claim 11, characterized in that: A fixing hole (33) and / or a second notch (34) opening toward the rear is provided at the rear end of the reinforcing plate (3); and / or a front folded edge (313) bent downward is provided at the front end of the reinforcing plate (3), and the front folded edge (313) is connected to the front side of the smoke collecting hood (1).

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