Range hood

Abstract

The present invention discloses a range hood, which includes a panel housing. A long strip-shaped first air suction opening is provided on the first panel housing wall of the panel housing. A noise reduction member is installed inside the panel housing at the first air suction opening, and the noise reduction member extends along the length direction of the first air suction opening. For the range hood of the present invention, through the cooperation of the long strip-shaped first air suction opening and the noise reduction member installed at the first air suction opening, the oil fume suction performance of the range hood is improved, and the working noise of the range hood is reduced, thereby improving the use performance of the range hood.

Description

Technical Field

[0001] The present invention relates to the field of kitchen appliances, especially range hoods. Background Art

[0002] Currently, range hoods have become essential appliances in the kitchen. However, existing range hoods produce a large amount of noise during operation, which affects their performance. Summary of the Invention

[0003] To solve at least one of the above technical problems, the present invention provides a range hood that can reduce the noise during operation and improve its performance.

[0004] To achieve the object of the present invention, an embodiment of the present invention provides a range hood, including a panel housing. A long strip-shaped first air suction opening is provided on the first panel housing wall of the panel housing. A noise reduction member is installed at the first air suction opening inside the panel housing, and the noise reduction member extends along the length direction of the first air suction opening;

[0005] There are two noise reduction members, and the two noise reduction members are respectively located at both ends in the width direction of the first air suction opening. The end faces of the two noise reduction members adjacent to each other form an air duct surface. Along the air inlet direction of the first air suction opening, the air duct surface is a plane or a curved surface inclined in a direction away from the other air duct surface, so as to form an air suction channel in a flared form between the two air duct surfaces;

[0006] A first noise reduction clamping cavity and a second noise reduction clamping cavity are formed inside the noise reduction member, so that a hollow structure is formed inside the noise reduction member.

[0007] According to an embodiment of the present invention, the first noise reduction clamping cavity and the second noise reduction clamping cavity are separated by a partition wall;

[0008] A first fixing member and a second fixing member are provided inside the panel housing. The first fixing member includes a first clamping portion that is clamped with the first noise reduction clamping cavity. The first clamping portion includes a first limiting portion. A first limiting and cooperating portion is provided inside the first noise reduction clamping cavity. The first limiting portion cooperates with the first limiting and cooperating portion to limit the movement of the noise reduction member towards the side close to the other noise reduction member;

[0009] The second fixing member includes a second clamping portion that is clamped with the second noise reduction clamping cavity. The second clamping portion includes a second limiting portion. A second limiting and cooperating portion is provided inside the second noise reduction clamping cavity. The second limiting portion cooperates with the second limiting and cooperating portion to limit the movement of the noise reduction member towards the side close to the other noise reduction member.

[0010] According to an embodiment of the present invention, the first clamping portion includes a first abutting portion, a first abutting and cooperating portion is provided in the first noise reduction clamping cavity, and the first abutting portion abuts against the first abutting and cooperating portion to limit the movement of the noise reduction member in a direction away from the wall of the first panel shell;

[0011] And / or, the second clamping portion includes a second abutting portion, a second abutting and cooperating portion is provided in the second noise reduction clamping cavity, and the second abutting portion abuts against the second abutting and cooperating portion to limit the movement of the noise reduction member in a direction away from the wall of the first panel shell.

[0012] According to an embodiment of the present invention, it further includes an air duct housing located inside the panel housing. An air inlet is provided on the first air duct wall of the air duct housing. The noise reduction member passes through the air inlet. The edge of the second fixing member extends between the first panel wall and the first air duct wall and is fixed to the first air duct wall. The second fixing member includes fixing plates provided on both sides of the second fixing member and extending along the width direction of the first air inlet. The fixing plates on both sides are fixed to both ends of the noise reduction member by screws.

[0013] According to an embodiment of the present invention, the first noise reduction clamping cavity and the second noise reduction clamping cavity are arranged in parallel on one side of the noise reduction member close to the wall of the first panel shell, and the first noise reduction clamping cavity is located on the side close to the air suction channel, and the second noise reduction clamping cavity is located on the side away from the air suction channel;

[0014] The first noise reduction clamping cavity includes a first installation opening for the insertion of the first clamping portion, the second noise reduction clamping cavity includes a second installation opening for the insertion of the second clamping portion, and both the first installation opening and the second installation opening face the wall of the first panel shell;

[0015] One end of the air duct surface on the air inlet side close to the air suction channel is provided with an arc transition surface, and the arc transition surface is smoothly connected to the wall of the first panel shell.

[0016] According to an embodiment of the present invention, the first noise reduction clamping cavity and the second noise reduction clamping cavity are arranged in parallel on one side of the noise reduction member close to the wall of the first panel shell. A third noise reduction cavity is provided on the side of the noise reduction member away from the wall of the first panel shell. The first noise reduction clamping cavity, the second noise reduction clamping cavity and the third noise reduction cavity are through slots arranged along the length direction of the noise reduction member.

[0017] According to an embodiment of the present invention, the panel housing includes an oil-collecting air inlet chamber located below the first panel housing wall. A first oil leakage air inlet is provided on the bottom wall of the oil-collecting air inlet chamber. The range hood further includes an oil cup installed below the oil-collecting air inlet chamber. A gap is formed between the oil cup and the oil-collecting air inlet chamber to form a long-strip-shaped second air suction port. The second air suction port is communicated with the oil-collecting air inlet chamber through the first oil leakage air inlet.

[0018] According to an embodiment of the present invention, it further includes an air duct housing located inside the panel housing. The air duct housing includes a second air duct housing wall located at the bottom. The second air duct housing wall is located above the oil-collecting air inlet chamber. A second oil leakage air inlet is provided on the second air duct housing wall. The oil-collecting air inlet chamber is communicated with the inner cavity of the air duct housing through the second oil leakage air inlet;

[0019] The oil cup is long-strip-shaped. The length direction of the oil cup is parallel to the length direction of the second air suction port. A second air suction port is formed between the first oil cup side wall of the oil cup and the bottom wall of the oil-collecting air inlet chamber. The inner wall surface of the first oil cup side wall protrudes from one end of the bottom wall of the oil-collecting air inlet chamber close to the second air suction port. A guiding slide rail extending along the width direction of the oil cup is provided on one of the oil cup and the oil-collecting air inlet chamber. A guiding slider slidably matched with the guiding slide rail is provided on the other of the oil cup and the oil-collecting air inlet chamber. And a limiting structure is provided between the oil cup and the oil-collecting air inlet chamber to limit the sliding distance of the oil cup.

[0020] According to an embodiment of the present invention, the range hood further includes a first fan assembly and a second fan assembly. The first fan assembly is arranged inside the air duct housing. The second fan assembly is located above the first air suction port, and the second fan assembly is located on the air inlet side of the first air suction port and the second air suction port. The second fan assembly is arranged to blow downward;

[0021] Smoke baffle plates are provided on both sides of the panel housing. The first air suction port and the second air suction port are located between the two smoke baffle plates.

[0022] For the range hood provided by the embodiment of the present invention, a long-strip-shaped first air suction port is formed on the panel housing. The ventilation cross-sectional area of the first air suction port is large, which reduces the wind resistance coefficient and noise and helps to improve the oil fume suction performance of the range hood. A noise reduction member is installed at the first air suction port. The noise reduction member extends along the length direction of the first air suction port. When the range hood is working, the oil fume entering the inside of the panel housing from the first air suction port can flow through the noise reduction member, and the noise reduction member can reduce the noise generated when the oil fume flows.

[0023] The range hood according to the embodiment of the present invention, through the cooperation of the long strip-shaped first air suction port and the noise reduction member installed at the first air suction port, improves the oil fume suction performance of the range hood and reduces the working noise of the range hood, thereby improving the use performance of the range hood.

[0024] Other features and advantages of the present invention will be described in the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are used to provide a further understanding of the technical solution of the present invention, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0026] Figure 1 is a schematic three-dimensional structure diagram of a range hood according to an embodiment of the present invention;

[0027] Figure 2 is Figure 1 the schematic front view structure diagram of the range hood shown;

[0028] Figure 3 is Figure 2 the sectional structure diagram taken along the A-A direction of;

[0029] Figure 4 is Figure 3 the enlarged schematic diagram of the structure of part B of;

[0030] Figure 5 is Figure 3 the enlarged schematic diagram of the structure of part C of;

[0031] Figure 6 is Figure 1 the exploded structure diagram of the second fixing member and the noise reduction member of the range hood shown;

[0032] Figure 7 is Figure 6 the enlarged schematic diagram of the structure of part D of;

[0033] Figure 8 is Figure 1 the inverted structure diagram of the air duct housing of the range hood shown;

[0034] Figure 9 is a schematic three-dimensional structure diagram of a range hood according to another embodiment of the present invention;

[0035] Figure 10 is Figure 9 the exploded diagram of the range hood shown;

[0036] Figure 11 is Figure 9 the sectional view of the range hood shown;

[0037] Figure 12 is Figure 11 an enlarged schematic view of the N part structure;

[0038] Figure 13 is Figure 11 an enlarged schematic view of the M part structure;

[0039] Figure 14 is Figure 1 a schematic view of the structure of the first fan assembly of the range hood shown in;

[0040] Figure 15 is Figure 14 an exploded schematic view of the first fan assembly shown in;

[0041] Figure 16 is Figure 14 a schematic view of the structure of the fixed plate in;

[0042] Figure 17 is Figure 14 a schematic view of the structure of the first volute part in;

[0043] Figure 18 is Figure 14 a schematic view of the structure of the second volute part in;

[0044] Figure 19 is Figure 14 a schematic view of the structure of the motor in;

[0045] Figure 20 is Figure 14 a schematic view of the structure of the air guide in;

[0046] Figure 21 is Figure 14 a schematic view of the structure of the exhaust valve in;

[0047] Figure 22 is Figure 9 a schematic view of the structure of the first pipe joint of the range hood shown in.

[0048] Among them, Figures 1 - 22 the relationship between the reference numerals and the component names in is:

[0049] 1 - Panel housing, 11 - First air suction port, 12 - First clamping part, 121 - First limiting part, 122 - First abutting part, 13 - Oil collecting and air inlet chamber, 14 - First oil leakage air inlet, 15 - Second air suction port, 16 - Smoke baffle, 17 - First panel housing wall, 2 - Noise reduction part, 20 - Air suction channel, 21 - Air duct surface, 22 - Oil collecting tank, 23 - First noise reduction clamping cavity, 231 - First limiting and mating part, 232 - First abutting and mating part, 24 - Second noise reduction clamping cavity, 241 - Second limiting and mating part, 242 - Second abutting and mating part, 25 - Partition wall, 26 - Third noise reduction cavity, 27 - Third fixing hole, 28 - Arc transition surface, 3 - Air duct housing, 31 - Air inlet, 32 - First air duct housing wall, 33 - Boss, 34 - Oil retaining slope, 35 - Second air duct housing wall, 36 - Second oil leakage air inlet, 37 - First fixing hole, 38 - Support rib, 381 - Fourth screw fixing hole, 4 - Second fixing part, 41 - Second clamping part, 411 - Second limiting part, 412 - Second abutting part, 42 - Fixing plate, 421 - Fourth fixing hole, 43 - Second fixing hole, 5 - Oil cup, 51 - First oil cup side wall, 6 - First fan assembly, 61 - Volute, 611 - Axial air inlet, 612 - Air outlet, 613 - First volute part, 6131 - Fifth screw fixing hole, 614 - Second volute part, 6141 - Sixth screw fixing hole, 6142 - Second fixing groove, 615 - Volute tongue, 616 - Fixing part, 6161 - First fixing part, 6162 - Second fixing part, 6163 - Second screw fixing hole, 617 - Shaft hole, 618 - Abutting part, 62 - Motor, 621 - Motor shaft, 622 - Fixed lug, 63 - Impeller, 64 - Air guiding part, 641 - Mounting plate, 642 - Air guiding vane, 7 - Fixing plate, 71 - Mounting hole, 72 - First screw fixing hole, 73 - Third screw fixing hole, 74 - First annular rib, 741 - Rotating clamping groove, 742 - Inserting part, 743 - Clamping part, 75 - First inserting cavity, 76 - Flange, 8 - Exhaust valve, 81 - Mounting shaft, 82 - Valve plate, 83 - Protruding part, 91 - First pipe joint, 911 - First inserting part, 912 - Buckle, 913 - Second inserting groove, 92 - Connecting pipe, 921 - Second inserting part, 922 - Third inserting part, 93 - Second pipe joint, 931 - Third inserting groove, 932 - Fourth inserting part, 933 - Second buckle, 10 - Second fan assembly. Detailed implementation

[0050] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] An embodiment of the present invention provides a range hood, as Figures 1 - 6As shown in the figure, it includes a panel housing 1. A long strip-shaped first air suction port 11 is provided on the first panel wall 17 of the panel housing 1. A noise reduction member 2 is installed inside the panel housing 1 at the first air suction port 11, and the noise reduction member 2 extends along the length direction of the first air suction port 11.

[0052] For the range hood provided by the embodiment of the present invention, a long strip-shaped first air suction port 11 is formed on the panel housing 1. The ventilation cross-sectional area of the first air suction port 11 is large, which reduces the wind resistance coefficient and noise, and helps to improve the oil fume suction performance of the range hood. A noise reduction member 2 is installed at the first air suction port 11, and the noise reduction member 2 extends along the length direction of the first air suction port 11. When the range hood is working, the oil fume entering the interior of the panel housing 1 from the first air suction port 11 can flow through the noise reduction member 2, and the noise reduction member 2 can reduce the noise generated when the oil fume flows.

[0053] For the range hood of the embodiment of the present invention, through the cooperation of the long strip-shaped first air suction port 11 and the noise reduction member 2 installed at the first air suction port 11, the oil fume suction performance of the range hood is improved, and the working noise of the range hood is reduced, thereby improving the use performance of the range hood.

[0054] In some exemplary embodiments, there are two noise reduction members 2, and the two noise reduction members 2 are respectively located at both ends in the width direction of the first air suction port 11. The end faces of the two noise reduction members 2 adjacent to each other form an air duct surface 21. Along the air inlet direction of the first air suction port 11, the air duct surface 21 is a plane or a curved surface inclined in a direction away from the other air duct surface, so as to form a flared air suction channel 20 between the two air duct surfaces 21.

[0055] Two noise reduction members 2 are installed at the first air suction port 11. The two noise reduction members 2 extend along the length direction of the first air suction port 11, and the two noise reduction members 2 are respectively arranged at both ends in the width direction of the first air suction port 11. The end faces of the two noise reduction members 2 adjacent to each other form an air duct surface 21. Along the air inlet direction of the first air suction port 11, the air duct surfaces 21 of the two noise reduction members 2 are far away from each other, so that the air suction channel 20 formed between the two air duct surfaces 21 is in a flared form, that is, along the air inlet direction of the first air suction port 11, the ventilation cross-sectional area of the air suction channel 20 gradually increases. When the range hood is working and the oil fume passes through the air suction channel 20, the oil fume decelerates, cools down, and undergoes turbulence, which is beneficial to reducing noise.

[0056] In some exemplary embodiments, an oil collecting groove 22 is provided on the air duct surface 21 of the noise reduction member 2. The oil droplets formed by the condensation of the oil fume can gather in the oil collecting groove 22, avoiding the oil droplets from dripping onto the stove top from the first air suction port 11 and polluting the stove top. In addition, since the oil collecting groove 22 is provided on the air duct surface 21, when the oil fume passes through the air suction channel 20, turbulence will be formed at the oil collecting groove 22, which is beneficial to reducing the noise during the operation of the range hood.

[0057] By arranging a noise reduction member 2 at the first air suction port 11 to form an air suction channel with a flared opening, and arranging an oil collecting groove 22 on the air duct surface 21 of the noise reduction member 2, the noise during the operation of the range hood is reduced, and oil droplets are prevented from dripping from the first air suction port 11, improving the use performance of the range hood.

[0058] In some exemplary embodiments, the first panel shell wall 17 may be the front panel shell wall located on the front side, and the front panel shell wall may be an inclined shell wall with the upper end inclined forward. The first air suction port 11 is a long strip-shaped air suction port extending along the left-right direction. The two noise reduction members 2 extend along the left-right direction and are respectively arranged on the upper and lower sides of the first air suction port 11.

[0059] In some exemplary embodiments, one oil collecting groove 22 is arranged; alternatively, a plurality of oil collecting grooves 22 are arranged, and the plurality of oil collecting grooves 22 are arranged in sequence along the air inlet direction of the first air suction port 11. Among them, the plurality of oil collecting grooves 22 may be arranged in parallel.

[0060] As Figure 4 and Figure 7 shown, two oil collecting grooves 22 may be arranged, and the two oil collecting grooves 22 extend along the left-right direction, and the two oil collecting grooves 22 are arranged in parallel. Of course, the number of oil collecting grooves 22 arranged is not limited to two, and may also be other numbers, such as one, three or more.

[0061] In some exemplary embodiments, the oil collecting groove 22 is a through groove extending along the length direction of the first air suction port 11 to both ends of the air duct surface 21.

[0062] The length direction of the first air suction port 11 is the left-right direction, and the oil collecting groove 22 is a through groove extending along the left-right direction to both ends of the air duct surface 21, so that the oil liquid accumulated in the oil collecting groove 22 can flow along the oil collecting groove 22 to both left and right sides, and flow from both left and right sides of the oil collecting groove 22 to the inside of the panel housing 1, preventing the oil liquid in the oil collecting groove 22 from overflowing and then dripping from the first air suction port 11 onto the stove top, and avoiding manual cleaning of the oil liquid in the oil collecting groove 22.

[0063] In some exemplary embodiments, as Figures 3 - 4 shown, the first air duct shell wall 32 of the air duct housing 3 may be the front air duct shell wall located on the front side, and the front air duct shell wall may be an inclined shell wall with the upper end inclined forward to be adapted to the first panel shell wall 17 located on the front side. The first air duct shell wall 32 and the first panel shell wall 17 may be fixed by gluing.

[0064] In some exemplary embodiments, as Figures 3 - 4 、 Figure 8As shown, the first air duct housing wall 32 is an oil guiding wall that is inclined with one end higher and the other end lower. A oil retaining slope 34 that protrudes inward is provided on the inner wall surface of the first air duct housing wall 32. The oil retaining slope 34 is located above the two noise reduction members 2, and the oil retaining slope 34 extends along the length direction of the first air suction port 11. The two ends of the oil retaining slope 34 along the length direction of the first air suction port 11 protrude beyond the two ends of the noise reduction members 2 along the length direction of the first air suction port 11.

[0065] The first air duct housing wall 32 is an oil guiding wall that is inclined with one end higher and the other end lower, so that oil droplets can flow downward along the first air duct housing wall 32. A oil retaining slope 34 that protrudes inward is provided on the inner wall surface of the first air duct housing wall 32. In this way, the oil droplets accumulated on the first air duct housing wall 32 can be blocked by the oil retaining slope 34 and flow to the left and right ends along the oil retaining slope 34. After the oil droplets flow to the left and right ends of the oil retaining slope 34, they continue to flow downward along the first air duct housing wall 32. Since the oil retaining slope 34 is located above the two noise reduction members 2, the oil retaining slope 34 extends in the left-right direction (the length direction of the first air suction port 11), and the left and right ends of the oil retaining slope 34 protrude beyond the left and right ends of the noise reduction members 2. When the oil droplets flowing out from the left and right ends of the oil retaining slope 34 continue to flow downward along the first air duct housing wall 32, they will not flow to the noise reduction members 2, thereby avoiding oil dripping from the first air suction port 11.

[0066] In some exemplary embodiments, such as Figure 4 、 Figure 8 As shown, a boss 33 that protrudes toward the inside of the air duct housing 3 is provided on the first air duct housing wall 32. The air inlet 31 is opened on the boss 33, and the upper side wall surface of the boss 33 forms the oil retaining slope 34.

[0067] A boss 33 that protrudes inward is provided on the first air duct housing wall 32. The air inlet 31 is opened on the boss 33. The noise reduction member 2 passes through the air inlet 31 opened on the boss 33, so that the length of the upper wall surface of the boss 33 along the length direction of the first air inlet 31 is greater than the length of the noise reduction member 2 along the length direction of the first air inlet 31, and the two ends of the upper wall surface of the boss 33 along the length direction of the first air inlet 31 protrude beyond the two ends of the noise reduction member 2 along the length direction of the first air suction port 11, so as to ensure that the oil retaining slope 34 formed by the upper side wall surface of the boss 33 can effectively block oil for the noise reduction member 2 and the first air suction port 11.

[0068] In some exemplary embodiments, such as Figure 8 As shown, the boss 33 can be rectangular, and the upper side wall surface of the boss 33 can extend in the left-right direction and be parallel to the length direction of the first air suction port 11. The side wall surfaces on the left and right sides of the boss 33 can form oil guiding slopes, and the oil droplets flowing down from the left and right ends of the oil retaining slope 34 can flow downward along the oil guiding slopes on the left and right sides of the boss 33.

[0069] In some exemplary embodiments, such as Figures 3 - 4 、Figures 6 - 7 As shown, a first noise reduction clamping cavity 23 and a second noise reduction clamping cavity 24 are formed in the noise reduction member 2, and the first noise reduction clamping cavity 23 and the second noise reduction clamping cavity 24 are separated by a partition wall 25.

[0070] A first fixing member is fixed to the inner side of the panel housing 1. The first fixing member includes a first clamping portion 12, and the first clamping portion 12 is clamped with the first noise reduction clamping cavity 23.

[0071] A second fixing member 4 is fixed to the air duct housing 3. The edge of the second fixing member 4 extends into the space between the boss 33 and the panel housing 1 and is fixed to the boss 33. A second clamping portion 41 is provided on the second fixing member 4, and the second clamping portion 41 is clamped with the second noise reduction clamping cavity 24.

[0072] The noise reduction member 2 is provided with a first noise reduction clamping cavity 23 and a second noise reduction clamping cavity 24, and the first noise reduction clamping cavity 23 and the second noise reduction clamping cavity 24 form a hollow structure inside the noise reduction member 2. When the range hood is working and the cooking fume passes through the air suction channel 20, it will cause the vibration of the noise reduction member 2, and the hollow structure can dissipate the vibration energy of the noise reduction member 2, which is beneficial to reducing the working noise of the range hood.

[0073] In addition, the first noise reduction clamping cavity 23 can be clamped and cooperated with the first clamping portion 12 of the first fixing member, and the second noise reduction clamping cavity 24 can be clamped and cooperated with the second clamping portion 41 of the second fixing member to realize the installation and fixation of the noise reduction member 2.

[0074] In some exemplary embodiments, the second fixing member 4 is fixed to the boss 33 of the first air duct housing wall 32 by screws. Among them, as Figure 4 、 Figure 6 、 Figure 8 shown, a first fixing hole 37 for screw fixation is provided on the boss 33 of the first air duct housing wall 32, and a second fixing hole 43 for screw fixation is provided on the second fixing member 4.

[0075] In some exemplary embodiments, as Figure 4 、 Figure 7 shown, the first clamping portion 12 includes a first limiting portion 121, and a first limiting cooperation portion 231 is provided in the first noise reduction clamping cavity 23. The first limiting portion 121 and the first limiting cooperation portion 231 cooperate to limit the movement of the noise reduction member 2 toward the side close to another noise reduction member 2.

[0076] The second clamping portion 41 includes a second limiting portion 411, and a second limiting cooperation portion 241 is provided in the second noise reduction clamping cavity 24. The second limiting portion 411 and the second limiting cooperation portion 241 cooperate to limit the movement of the noise reduction member 2 toward the side close to another noise reduction member 2.

[0077] The first limiting portion 121 of the first clamping portion 12 cooperates with the first limiting and cooperating portion 231 in the first clamping cavity to limit the movement of the noise reduction member 2 toward the side close to another noise reduction member 2. The second limiting portion 411 of the second clamping portion 41 cooperates with the second limiting and cooperating portion 241 in the second clamping cavity to limit the movement of the noise reduction member 2 toward the side away from another noise reduction member 2. Through the cooperation between the first limiting portion 121 and the first limiting and cooperating portion 231, and the cooperation between the second limiting portion 411 and the second limiting and cooperating portion 241, the up-and-down limiting of the two noise reduction members 2 arranged one above the other in the up-and-down direction is achieved, and the up-and-down displacement of the two noise reduction members 2 is avoided.

[0078] In some exemplary embodiments, such as Figure 4 , Figure 7 shown, the first clamping portion 12 includes a first abutting portion 122. A first abutting and cooperating portion 232 is provided in the first noise reduction clamping cavity 23. The first abutting portion 122 abuts against the first abutting and cooperating portion 232 to limit the movement of the noise reduction member 2 toward the direction away from the first panel shell wall 17. The second clamping member portion includes a second abutting portion 412. A second abutting and cooperating portion 242 is provided in the second noise reduction clamping cavity 24. The second abutting portion 412 abuts against the second abutting and cooperating portion 242 to limit the movement of the noise reduction member 2 toward the direction away from the first panel shell wall 17.

[0079] The cooperation between the first abutting portion 122 of the first clamping portion 12 and the first abutting and cooperating portion 232 in the first noise reduction clamping cavity 23 can limit the movement of the noise reduction member 2 toward the direction away from the first panel shell wall 17 (limiting the backward movement of the noise reduction member 2). The cooperation between the second abutting portion 412 of the second clamping portion 41 and the second abutting and cooperating portion 242 in the second noise reduction clamping cavity 24 can limit the movement of the noise reduction member 2 toward the direction away from the first panel shell wall 17 (limiting the backward movement of the noise reduction member 2). The first panel shell wall 17 can limit the forward movement of the noise reduction member 2. Therefore, the cooperation between the first abutting portion 122 and the first abutting and cooperating portion 232, and the cooperation between the second abutting portion 412 and the second abutting and cooperating portion 242 achieve the front-and-back limiting of the noise reduction member 2 and avoid the front-and-back displacement of the noise reduction member 2.

[0080] Of course, it is also possible to only provide the first abutting portion 122 and the first abutting and cooperating portion 232, or only provide the second abutting portion 412 and the second abutting and cooperating portion 242, and the front-and-back limiting of the noise reduction member 2 can also be achieved.

[0081] In some exemplary embodiments, such as Figure 4 , Figure 7As shown, the first noise reduction clamping cavity 23 and the second noise reduction clamping cavity 24 are arranged in parallel on the side of the noise reduction member 2 close to the first panel shell wall 17. The first noise reduction clamping cavity 23 is located on the side close to the air suction channel 20, and the second noise reduction clamping cavity 24 is located on the side far from the air suction channel 20. The first noise reduction clamping cavity 23 includes a first installation opening for the insertion of the first clamping portion 12, and the second noise reduction clamping cavity 24 includes a second installation opening for the insertion of the second clamping portion 41. Both the first installation opening and the second installation opening face the first panel shell wall 17, so that the first clamping portion 12 and the second clamping portion 41 are respectively clamped into the first noise reduction clamping cavity 23 and the second noise reduction clamping cavity 24 from the first installation opening and the second installation opening.

[0082] In some exemplary embodiments, as Figure 4 shown, the first clamping portion 12 and the first panel shell wall 17 are of an integral structure. The first limiting portion 121 of the first clamping portion 12 formed by bending the first panel shell wall 17, and the first abutting portion 122 is formed by stamping on the first limiting portion 121. The first limiting portion 121 is substantially parallel to the air duct surface 21, and the first abutting portion 122 is substantially perpendicular to the first panel shell wall 17.

[0083] In some exemplary embodiments, as Figure 4 、 Figure 7 shown, the partition wall 25 forms the cavity wall of the first noise reduction clamping cavity 23, and the side wall surface of the partition wall 25 facing the first noise reduction clamping cavity 23 forms a first limiting and cooperating portion 231. Of course, the first limiting and cooperating portion 231 can also be formed by using other cavity walls of the first noise reduction clamping cavity 23, or a first limiting and cooperating portion 231 is separately provided in the first noise reduction clamping cavity 23.

[0084] The partition wall 25 is provided with a first abutting and cooperating portion 232 extending towards the first noise reduction clamping cavity 23, and the first abutting and cooperating portion 232 is substantially parallel to the first panel shell wall 17.

[0085] In some exemplary embodiments, as Figure 4 shown, the second abutting portion 412 of the second clamping portion 41 is connected to the second limiting portion 411, so that the second clamping portion 41 is substantially L-shaped. The second abutting portion 412 is substantially perpendicular to the first panel shell wall 17, and the second limiting portion 411 is substantially perpendicular to the second abutting portion 412.

[0086] As Figure 4 、 Figure 7As shown, a second abutting and mating portion 242 extending toward the second noise reduction clamping cavity 24 is provided on the partition wall 25. An end of the second abutting and mating portion 242 is connected to a second limiting and mating portion 241, and the connected second abutting and mating portion 242 and second limiting and mating portion 241 are substantially L-shaped. The second abutting and mating portion 242 is substantially perpendicular to the first panel shell wall 17, and the second limiting and mating portion 241 is substantially perpendicular to the second abutting and mating portion 242.

[0087] In some exemplary embodiments, such as Figure 4 , Figure 7 As shown, a third noise reduction cavity 26 is provided on a side of the noise reduction member 2 away from the first panel shell wall 17.

[0088] The third noise reduction member 2 provided on the side of the noise reduction member 2 away from the first panel shell wall 17 can form a hollow structure within the noise reduction member 2, which is beneficial to dissipating the vibration of the noise reduction member 2 caused when the fume passes through the air suction channel 20, and thus is beneficial to reducing the working noise of the range hood.

[0089] In some exemplary embodiments, the first noise reduction clamping cavity 23, the second noise reduction clamping cavity 24, and the third noise reduction cavity 26 may be through slots provided along the length direction of the noise reduction member 2, that is, the first noise reduction clamping cavity 23, the second noise reduction clamping cavity 24, and the third noise reduction cavity 26 may penetrate the noise reduction member 2 in the left-right direction.

[0090] The first noise reduction clamping cavity 23, the second noise reduction clamping cavity 24, and the third noise reduction cavity 26 may be through slots provided along the length direction of the noise reduction member 2. On the one hand, it makes the noise reduction effect of the noise reduction member 2 good, and at the same time is convenient for the processing and forming of the noise reduction member 2.

[0091] In some exemplary embodiments, such as Figure 4 , Figure 7 As shown, an arc transition surface 28 is provided at one end of the air duct surface 21 close to the air inlet side of the air suction channel 20, and the arc transition surface 28 is smoothly transitionally connected to the first panel shell wall 17.

[0092] An arc transition surface 28 is provided at the front end of the air duct surface 21 of the noise reduction member 2, and the arc transition surface 28 is smoothly transitionally connected to the front plate surface of the first panel shell wall 17, so that the fume can smoothly enter the air suction channel 20 through the first air suction port 11. In addition, the air duct surface 21 of the noise reduction member 2 is smoothly transitionally connected to the first panel shell wall 17, increasing the aesthetic property of the appearance of the range hood.

[0093] In some exemplary embodiments, such as Figure 6 As shown, the second fixing member 4 further includes fixing plates 42 provided on both sides of the second fixing member 4 and extending along the width direction of the first air suction port 11, and the fixing plates 42 on both sides are fixed to the two ends of the noise reduction member 2 by screws.

[0094] On the left and right sides of the second fixing member 4, there are fixing plates 42, and the left and right ends of the noise reduction member 2 are respectively fixed to the fixing plates 42 on the left and right sides by screws (such as three or other quantities). Among them, as Figure 4 、 Figures 6 - 7 shown, on the left and right ends of the noise reduction member 2, there are third fixing holes 27 (such as three or other quantities) for screw fixation, and on the fixing plates 42, there are fourth fixing holes 421 (such as three or other quantities) for screw fixation.

[0095] In some exemplary embodiments, as Figure 4 、 Figures 6 - 7 shown, the noise reduction member 2 is an integrally formed sheet metal part or plastic part.

[0096] In some exemplary embodiments, the panel housing 1 includes an oil collecting air inlet chamber 13 located below the first panel housing wall 17, and a first oil leakage air inlet 14 is provided on the bottom wall of the oil collecting air inlet chamber 13.

[0097] The range hood further includes an oil cup 5 installed below the oil collecting air inlet chamber 13. There is a gap between the oil cup 5 and the oil collecting air inlet chamber 12 to form a long strip-shaped second air suction port 15, and the second air suction port 15 is communicated with the oil collecting air inlet chamber 13 through the first oil leakage air inlet 14.

[0098] The air duct housing 3 includes a second air duct housing wall 35 located at the bottom. The second air duct housing wall 35 is located above the oil collecting air inlet chamber 13. A second oil leakage air inlet 36 is provided on the second air duct housing wall 35, and the oil collecting air inlet chamber 13 is communicated with the inner cavity of the air duct housing 3 through the second oil leakage air inlet 36.

[0099] The gap between the oil cup 5 and the oil collecting air inlet chamber 13 of the panel housing 1 forms a long strip-shaped second air suction port 15, and the second air suction port 15, the oil collecting air inlet chamber 13 and the inner cavity of the air duct housing 3 are communicated. When the range hood is working, part of the oil fume can enter the air duct housing 3 through the first air suction port 11 and the air suction channel 20; part of the oil fume can flow in the direction shown by the arrow in Figure 5 , enter the oil cup 5 from the second air suction port 15, then enter the oil collecting air inlet chamber 13 through the first oil leakage air inlet 14 on the bottom wall of the oil collecting air inlet chamber 13, and the oil fume in the oil collecting air inlet chamber 13 can enter the air duct housing 3 through the second oil leakage air inlet 36 on the second air duct housing wall 35 of the air duct housing 3. The oil fume in the air duct housing 3 can pass through the first fan assembly 6 and be discharged from the air outlet above the range hood.

[0100] In addition, as Figure 8As shown, the front end of the second air duct wall 35 of the air duct housing 3 is connected to the lower end of the first air duct wall 32, so that the oil droplets flowing down along the first air duct wall 32 can flow onto the second air duct wall 35 and enter the oil collecting air inlet chamber 13 through the second oil leakage air inlet 36 on the second air duct wall 35, and then fall into the oil cup 5 through the first oil leakage air inlet 14 on the bottom wall of the oil collecting air inlet chamber 13.

[0101] The structure of the second air suction port 15 and the communication channel between the second air suction port 15 and the inner cavity of the air duct housing 3 is simple. By adding the second air suction port 15, the oil fume suction capacity of the range hood is enhanced, the escape of oil fume is reduced, and the working performance of the range hood is improved.

[0102] In some exemplary embodiments, such as Figure 1 , Figure 2 , Figure 5 as shown, the oil cup 5 is elongated, the length direction of the oil cup 5 is parallel to the length direction of the second air suction port 15, a second air suction port 15 is formed between the first oil cup side wall 51 of the oil cup 5 and the bottom wall of the oil collecting air inlet chamber 13, and the inner wall surface of the first oil cup side wall 51 protrudes from the end of the bottom wall of the oil collecting air inlet chamber 13 close to the second air suction port 15.

[0103] The elongated oil cup 5 extends in the left-right direction, and the second air suction port 15 extends in the left-right direction, so that the length directions of the oil cup 5 and the second air suction port 15 are in the left-right direction. The first oil cup side wall 51 is the front oil cup side wall located on the front side of the oil cup 5, and there is a gap between the front oil cup side wall and the front end of the bottom wall of the oil collecting air inlet chamber 13 to form the second air suction port 15. The inner wall surface of the front oil cup side wall protrudes forward relative to the front end of the bottom wall of the oil collecting air inlet chamber 13. On the one hand, the second air suction port 15 can be formed, and on the other hand, the oil cup 5 can collect the oil droplets left from the outer wall surface of the front cavity wall of the oil collecting air inlet chamber 13 to prevent the oil droplets from dripping onto the stove top.

[0104] In some exemplary embodiments, a guiding slide rail extending along the width direction of the oil cup 5 is provided on one of the oil cup 5 and the oil collecting air inlet chamber 13, and a guiding slider slidably engaged with the guiding slide rail is provided on the other of the oil cup 5 and the oil collecting air inlet chamber 13.

[0105] The oil cup 5 and the oil collecting air inlet chamber 13 are slidably connected through the sliding fit of the guiding slide rail and the guiding slider, which facilitates the sliding disassembly and installation of the oil cup 5. The length direction of the elongated oil cup 5 is in the left-right direction, and the width direction is in the front-back direction. The guiding slide rail extends along the width direction (i.e., the front-back direction) of the oil cup 5, so that the oil cup 5 can be disassembled and installed by pulling the oil cup 5 back and forth, and the pulling distance is short and the disassembly and installation are convenient.

[0106] In some exemplary embodiments, a limiting structure is provided between the oil cup 5 and the oil collecting air inlet chamber 13 to limit the sliding distance of the oil cup 5.

[0107] The distance of the oil cup 5 sliding back and forth is restricted by a limiting structure to limit the front and back positions of the oil cup 5, so as to ensure that the inner wall surface of the front oil cup side wall (the first oil cup side wall 51) protrudes forward relative to the front end of the bottom wall of the oil collecting air inlet chamber 13.

[0108] In some exemplary embodiments, such as Figure 3 shown, the range hood further includes a first fan assembly 6 and a second fan assembly 10. The first fan assembly 6 is disposed in the air duct housing 3. The second fan assembly 10 is located above the first air inlet 11, and the second fan assembly 10 is located on the air inlet side of the first air inlet 11 and the second air inlet 15, and the second fan assembly 10 is configured to blow air downward.

[0109] The first air inlet 11 is located above the second air inlet 15. The second fan assembly 10 is located above the first air inlet 11, and the second fan assembly 10 is located on the air inlet side (front side) of the first air inlet 11 and the second air inlet 15. The range hood is located above the cooking stove. The second fan assembly 10 blows air downward, which can form an air curtain to reduce the escape of oil fume. And under the action of the second fan assembly 10, the oil fume can enter the range hood from the second air inlet 15.

[0110] In some exemplary embodiments, such as Figures 1 - 2 shown, smoke baffle plates 16 are provided on the left and right sides of the panel housing 1, and the first air inlet 11 and the second air inlet 15 are located between the two smoke baffle plates 16.

[0111] The two smoke baffle plates 16 can reduce the escape of oil fume to the left and right sides. The smoke baffle plates 16 on the left and right sides, the air curtain formed by the second fan assembly 10 located on the front side, and the front surface of the panel housing 1 cooperate to define the space of the oil fume, prevent the oil fume from escaping to the surroundings, and enable the oil fume to enter the range hood, improving the oil fume suction effect of the range hood.

[0112] An embodiment of the present invention provides a fan fixing structure for a range hood.

[0113] Such as Figures 11 - 12 , Figures 14 - 18 shown, the fan fixing structure includes a first fan assembly 6 and a fixing plate 7. The fixing plate 7 is a damping plate that can vibrate. A fixing portion 616 is provided at the top of the first fan assembly 6, and the fixing portion 616 is fixed to the fixing plate 7, so that the first fan assembly 6 is suspended and fixed.

[0114] The fan fixing structure can be used in a range hood. In the fan fixing structure, the first fan assembly 6 is suspended and fixed on the fixing plate 7. A fixing portion 616 is provided at the top of the first fan assembly 6. The first fan assembly 6 is fixed only by the fixed connection between the fixing portion 616 and the fixing plate 7, and there is no other support or fixing structure to support or fix the first fan assembly 6. Among them, the fixing plate 7 is a damping plate that can vibrate. When the range hood is working, the first fan assembly 6 starts and generates vibrations. The vibrations of the first fan assembly 6 can be transmitted to the fixing plate 7. The fixing plate 7 can vibrate up and down together with the first fan assembly 6 and consume the vibration energy, preventing the vibrations of the first fan assembly 6 from being transmitted to the housing assembly of the range hood (including the front panel housing 1, or including the front panel housing 1 and the duct housing 3), thereby avoiding the overall vibration of the range hood and improving the performance of the range hood.

[0115] In some exemplary embodiments, such as Figures 11 - 12 、 Figures 14 - 18 shown, the first fan assembly 6 has an air outlet 612 at the top. The fixing portion 616 is an annular fixing portion 616 provided on the outer wall surface of the first fan assembly 6. The fixing plate 7 is provided with a mounting hole 71. The air outlet 612 passes through the mounting hole 71 from bottom to top, and the fixing portion 616 is fixed below the fixing plate 7.

[0116] The first fan assembly 6 has an air outlet 612 at the top. The fixing plate 7 is provided with a mounting hole 71. When the first fan assembly 6 is fixed to the fixing plate 7, the air outlet 612 of the first fan assembly 6 can pass through the mounting hole 71 from bottom to top, so that the fixing plate 7 does not affect the air outlet and smoke exhaust of the first fan assembly 6. An annular fixing portion 616 is provided on the outer wall surface of the first fan assembly 6. The annular fixing portion 616 is located below the fixing plate 7 and is fixed to the fixing plate 7, making the fixing of the first fan assembly 6 firm.

[0117] In some exemplary embodiments, such as Figures 14 - 18 shown, the air outlet 612 and the mounting hole 71 are circular holes, and the center lines of the air outlet 612 and the mounting hole 71 coincide. The outer edge of the annular fixing portion 616 is rectangular, and the fixing plate 7 is a rectangular plate. Of course, the air outlet 612, the mounting hole 71, the annular fixing portion 616, and the fixing plate 7 are not limited to the foregoing shapes and can also be other shapes.

[0118] In some exemplary embodiments, the fixing portion 616 and the fixing plate 7 are fixed by screws, and as Figure 12 shown, the fixing portion 616 and the fixing plate 7 are in contact. As Figures 14 - 18 shown, the fixing plate 7 is provided with a plurality of first screw fixing holes 72 for screw fixing. The plurality of first screw fixing holes 72 are arranged around the mounting hole 71; the fixing portion 616 is provided with a plurality of second screw fixing holes 6163 for screw fixing.

[0119] During installation, the air outlet 612 at the top of the first fan assembly 6 passes through the installation hole 71 of the fixing plate 7 from bottom to top until the upper surface of the fixing portion 616 is in contact with the lower plate surface of the fixing plate 7, achieving the positioning of the first fan assembly 6 and the fixing plate 7. Then, the fixing plate 7 and the fixing portion 616 are fixed with screws, making the fixation of the first fan assembly 6 and the fixing plate 7 firm.

[0120] Of course, the fixing method of the first fan assembly 6 and the fixing plate 7 is not limited to screws. For example, it can be fixedly combined by screws and snap fasteners 912, welded, etc.

[0121] In some exemplary embodiments, such as Figure 15 and Figure 16 as shown, the fixing plate 7 is a sheet metal part formed integrally.

[0122] The fixing plate 7 is a sheet metal part, and the sheet metal part has a certain structural strength, which can support the first fan assembly 6 to achieve the suspension and fixation of the first fan assembly 6. Moreover, the sheet metal part is a thin-walled structural part with a certain elasticity, which can vibrate and deform, so as to consume the vibration of the first fan assembly 6 through the vibration of the sheet metal part and avoid the vibration being transmitted to the housing assembly of the range hood.

[0123] In some exemplary embodiments, such as Figure 16 as shown, the edge of the fixing plate 7 is provided with a hem 76. The hem 76 can enhance the structural strength of the fixing plate 7. In addition, as Figure 12 shown, when the fixing plate 7 is fixed to the support rib 38 (description is as follows) provided on the housing assembly (such as the air duct housing 3), the hem 76 can be sleeved outside the support rib 38 and cooperate with the support rib 38 to achieve the positioning of the fixing plate 7, so as to fix the fixing plate 7 in the housing assembly, and further fix the first fan assembly 6 in the housing assembly.

[0124] Of course, the fixing plate 7 is not limited to being a sheet metal part, and can also be made of other materials. For example, the fixing plate 7 can be a plastic part formed by injection molding, and the fixing plate 7 is an integral structure.

[0125] In some exemplary embodiments, such as Figure 12 and Figure 16 as shown, the fixing plate 7 is further provided with a third screw fixing hole 73, and the support rib 38 of the housing assembly is provided with a fourth screw fixing hole 381, so as to fix the fixing plate 7 and the support rib 38 of the housing assembly with screws. Among them, the third screw fixing hole 73 is located at the edge of the fixing plate 7, and a plurality of third screw fixing holes 73 are arranged at intervals along the circumferential direction of the fixing plate 7, and the plurality of third screw fixing holes 73 surround the plurality of first screw fixing holes 72.

[0126] In some exemplary embodiments, such as Figures 14 - 16 shown, the installation hole 71 is an eccentric hole deviating from the center of the fixing plate 7.

[0127] In some exemplary embodiments, the first fan assembly 6 includes a volute 61 and a fan installed in the volute 61, and the mounting hole 71 deviates toward the side away from the volute tongue 615 of the volute 61.

[0128] The volute 61 of the first fan assembly 6 has a volute tongue 615, and the mounting hole 71 on the fixing plate 7 deviates toward the side away from the volute tongue 615, so that the connection part of the volute 61 and the fixing plate 7 deviates from the center of the fixing plate 7, which is beneficial to enhancing the damping and vibration reduction effect of the fixing plate 7.

[0129] In some exemplary embodiments, an oil leakage hole (not shown) is provided at the bottom of the volute 61, so that the oil fluid on the inner wall surface of the volute 61 flows to the bottom of the volute 61 and drips from the oil dripping hole.

[0130] In some exemplary embodiments, as Figures 14 - 15 , Figure 17 and Figure 18 shown, the volute 61 includes a first volute part 613 and a second volute part 614 which are fixedly connected. Both the first volute part 613 and the second volute part 614 are semi-circular, and the volute tongue 615 is formed on the first volute part 613. The fixing part 616 includes a first fixing part 6161 of the fixing part 616 provided on the outer wall surface of the first volute part 613 and a second fixing part 6162 of the fixing part 616 provided on the outer wall surface of the second volute part 614. Both the first fixing part 6161 of the fixing part 616 and the second fixing part 6162 of the fixing part 616 are fixed to the fixing plate 7.

[0131] The volute 61 includes a first volute part 613 and a second volute part 614 which are semi-circular. The first volute part 613 and the second volute part 614 are fixedly formed into the volute 61. The first volute part 613 and the second volute part 614 are respectively provided with a first fixing part 6161 of the fixing part 616 and a second fixing part 6162 of the fixing part 616. Second screw fixing holes 6163 are provided on both the first fixing part 6161 of the fixing part 616 and the second fixing part 6162 of the fixing part 616, so that the first fixing part 6161 of the fixing part 616 and the second fixing part 6162 of the fixing part 616 are fixed to the fixing plate 7 by screws.

[0132] In some exemplary embodiments, the first volute part 613 and the second volute part 614 are fixed by screws. Among them, as Figure 17 and Figure 18 shown, the first volute part 613 is provided with a fifth screw fixing hole 6131 for screw fixing, and the second volute part 614 is provided with a sixth screw fixing hole 6141.

[0133] A positioning structure may be provided between the first volute part 613 and the second volute part 614. For example, a positioning post is provided on one of the first volute part 613 and the second volute part 614, and a positioning hole cooperating with the positioning post is provided on the other. The first volute part 613 and the second volute part 614 are positioned by the cooperation of the positioning post and the positioning hole, so as to fix the first volute part 613 and the second volute part 614 with screws.

[0134] In some exemplary embodiments, such as Figure 11 and Figure 14 shown, the first blower assembly 6 is a centrifugal blower assembly. The volute 61 has axial air inlets 611 located on both sides, and the air outlet 612 is a radial air outlet provided at the top of the volute 61.

[0135] Such as Figure 15 and Figure 19 shown, the blower of the first blower assembly 6 includes a motor 62 and two impellers 63. The motor 62 is installed in the volute 61, and the motor 62 is a dual-axis motor. The two impellers 63 are respectively installed on the two motor shafts 621 of the motor 62.

[0136] The first blower assembly 6 is a centrifugal blower assembly. Axial air inlets 611 are provided on both sides of the volute 61 of the first blower assembly 6, and a radial air outlet 612 is provided at the top. When the range hood works, the first blower assembly 6 starts, and the cooking fume enters the volute 61 axially along the centrifugal first blower assembly 6 from the axial air inlets 611, and is discharged from the radial air outlet 612 radially along the centrifugal first blower assembly 6.

[0137] The motor 62 of the first blower assembly 6 is a dual-axis motor. The two impellers 63 are respectively installed on the two motor shafts 621 of the motor 62 to enhance the fume extraction ability of the range hood when the first blower assembly 6 works.

[0138] In some exemplary embodiments, the motor 62 is a variable-frequency motor. The operating frequency of the variable-frequency motor can change and may resonate with the fixing plate 7, so that the fixing plate 7 can consume the vibration energy of the motor 62 to a greater extent.

[0139] Of course, the motor 62 can also be a fixed-frequency motor.

[0140] In some exemplary embodiments, such as Figures 17 - 19 shown, a motor bracket is provided outside the motor 62. The motor bracket is provided with a plurality of fixing lugs 622. First fixing grooves (not shown) and a second fixing groove 6142 are respectively provided on the inner sides of the first volute part 613 and the second volute part 614. Some of the fixing lugs 622 are inserted into the first fixing groove and fixed to the first fixing groove with screws, and some of the fixing lugs 622 are inserted into the second fixing groove 6142 and fixed to the second fixing groove 6142 with screws.

[0141] In some exemplary embodiments, such as Figure 14 and Figure 15 shown, the first blower assembly 6 further includes a wind guiding member 64. The wind guiding member 64 is disposed at the axial air inlet 611 of the volute 61 and is fixed to the first volute portion 613 and the second volute portion 614. Among them, as Figure 20 shown, the wind guiding member 64 includes an annular mounting plate 641 and a plurality of wind guiding vanes 642 disposed on the mounting plate 641. The central axis of the mounting plate 641 coincides with the central axis of the motor shaft 621. The plurality of wind guiding vanes 642 are evenly distributed along the circumferential direction of the mounting plate 641. The wind guiding vanes 642 are spiral, and the spiral direction of the wind guiding vanes 642 is adapted to the rotation direction of the motor shaft 621.

[0142] Wind guiding members 64 are disposed at both axial air inlets 611 on both sides of the volute 61. A plurality of wind guiding vanes 642 evenly distributed along the circumferential direction of the mounting plate 641 are provided on the mounting plate 641 of the wind guiding member 64, and the spiral direction of the plurality of spiral wind guiding vanes 642 is adapted to the rotation direction of the motor shaft 621. As Figure 20 shown, the plurality of wind guiding vanes 642 spiral along the Figure 13 direction indicated by the arrow in Figure 13 . The motor shaft 621 of the motor 62 also rotates along the direction indicated by the arrow, so that the spiral direction of the wind guiding vanes 642 is adapted to the rotation direction of the motor shaft 621. In this way, the wind guiding vanes 642 guide the oil fume, which can reduce the turbulent flow of the oil fume entering the volute 61 and is beneficial to enhancing the oil fume suction ability of the first blower assembly 6.

[0143] In some exemplary embodiments, the wind guiding member 64 and the volute 61 can be fixed by snap connection. A plurality of card slots (or snap fasteners) evenly distributed along the circumferential direction can be provided on the mounting plate 641 of the wind guiding member 64, and a plurality of snap fasteners (or card slots) are provided on the volute 61.

[0144] Of course, the wind guiding member 64 can also be fixed to the volute 61 by other means, such as screw fixation, etc.

[0145] In some exemplary embodiments, such as Figure 12 , Figures 14 - 16 shown, a first annular rib 74 surrounding the mounting hole 71 is provided on the fixing plate 7. The air outlet 612 extends into the first annular rib 74. The upper end surface of the first annular rib 74 is higher than the upper end surface of the air outlet 612. A first insertion cavity 75 is formed between the first annular rib 74 and the air outlet 612, and the first insertion cavity 75 is configured to be inserted into the first pipe joint 91.

[0146] The upper part of the fixing plate 7 is provided with a first annular rib 74. The air outlet 612 of the volute 61 passes through the mounting hole 71 and extends into the first annular rib 74, and a first insertion cavity 75 is formed between the first annular rib 74 and the air outlet 612. Among them, the first annular rib 74 forms the outer side wall of the first insertion cavity 75, the side wall of the air outlet 612 forms the inner side wall of the first insertion cavity 75, the fixing part 616 of the volute 61 forms the bottom wall of the first insertion cavity 75, and the fixing part 616 of the volute 61 is attached to and sealed with the lower plate surface of the fixing plate 7 to close the bottom end of the first insertion cavity 75.

[0147] As Figures 9 - 12 shown, the first insertion cavity 75 can be inserted with a first pipe joint 91. The lower end of the first pipe joint 91 can be provided with a first insertion part 911, and the first insertion part 911 can be inserted into the first insertion cavity 75.

[0148] Among them, the first pipe joint 91 can be used to connect with an exhaust pipe (not shown). Or, as Figures 9 - 12 shown, the first pipe joint 91, the connecting pipe 6, and the second pipe joint 93 are inserted and connected in sequence, and the second pipe joint 93 is connected to the exhaust pipe. As Figure 6 and Figure 15 shown, the upper part of the first pipe joint 91 forms a second insertion groove 913, and the lower end of the connecting pipe 6 is inserted into the second insertion groove 913. As Figure 11 and Figure 13 shown, the structure of the second pipe joint 93 can be the same as that of the first pipe joint 91 and is arranged in an inverted manner, and the upper end of the connecting pipe 6 can be inserted into the third insertion groove 931 at the lower part of the second pipe joint 93.

[0149] The setting of the first pipe joint 91 (or the first pipe joint 91, the connecting pipe 6, and the second pipe joint 93) can realize the connection between the air outlet 612 of the range hood and the exhaust pipe. In this way, by setting the first pipe joint 91 (or the first pipe joint 91, the connecting pipe 6, and the second pipe joint 93) with different pipe diameters, the connection with the air outlet 612 with different apertures and the exhaust pipe with different inner diameters can be realized.

[0150] When the range hood is working, the oil fume discharged from the air outlet 612 can be discharged into the exhaust pipe. The oil liquid in the first pipe joint 91 can flow downward into the first insertion cavity 75. Since the upper end surface of the first annular rib 74 is higher than the upper end surface of the air outlet 612, after the first insertion cavity 75 is filled with oil liquid, the oil liquid can overflow into the air outlet 612 and flow along the inner wall surface of the volute 61, and finally flow out from the oil leakage hole at the bottom of the volute 61.

[0151] In some exemplary embodiments, a sealing member is arranged in the first insertion cavity 75, and the lower end of the first pipe joint 91 abuts against the sealing member for sealing, so as to better prevent the oil liquid in the first insertion cavity 75 from leaking from the bottom of the first insertion cavity 75.

[0152] In some exemplary embodiments, such as Figure 12 , Figures 14 - 16 and Figure 22 shown, a rotation slot 741 is provided on the first annular rib 74. The rotation slot 741 is configured to rotatably engage with a buckle 912 on the first pipe joint 91. The rotation slot 741 includes a snap-in portion 742 disposed along the axial direction of the first annular rib 74 and a snap-connection portion 743 disposed along the circumferential direction of the first annular rib 74. The snap-in portion 742 and the snap-connection portion 743 are connected and communicate with each other and are in an L shape.

[0153] The first pipe joint 91 can move downward along the axial direction, so that the buckle 912 is inserted into the snap-in portion 742, and then the first pipe joint 91 is rotated to insert the buckle 912 into the snap-connection portion 743, realizing the connection between the first connector and the first annular rib 74.

[0154] Of course, the buckle can also be provided on the first annular rib 74, and the rotation slot can be provided on the first pipe joint 91.

[0155] In some exemplary embodiments, such as Figure 11 , Figures 14 - 15 shown, an exhaust valve 8 for one-way conduction and preventing air return is provided at the air outlet 612. As Figure 21 shown, the exhaust valve 8 includes a mounting shaft 81 and two valve plates 82 rotatably mounted on the mounting shaft 81. As Figure 17 , Figure 18 and Figure 21 shown, a shaft hole 617 and an abutting portion 618 are provided at the air outlet 612, and the mounting shaft 81 is inserted into the shaft hole 617.

[0156] When the exhaust valve 8 closes the air outlet 612, the two valve plates 82 are unfolded (as Figure 11 , Figure 14 , Figure 15 and Figure 21 ) and abut against the abutting portion 618; when the exhaust valve 8 opens the air outlet 612, the two valve plates 82 are folded and separated from the abutting portion 618.

[0157] An exhaust valve 8 for one-way conduction and preventing air return is provided at the air outlet 612. When the range hood is working, under the pressure of the oil fume at the air outlet 612, the two valve plates 82 rotate to a substantially vertical state to open the air outlet 612, and the oil fume can be discharged from the air outlet 612; when the range hood is not working, under the action of gravity, the two valve plates 82 automatically rotate to a substantially horizontal state, and the valve plates 82 abut against the abutting portion 618. At this time, the exhaust valve 8 closes the air outlet 612, and the oil fume in the exhaust duct can be prevented from flowing back into the range hood.

[0158] In some exemplary embodiments, such as Figure 12As shown, when the exhaust air valve 8 closes the air outlet 612, the valve plate 82 is located above the air outlet 612, and the edge of the valve plate 82 extends radially along the air outlet 612 beyond the inner wall surface of the air outlet 612. There is an oil passing gap between the upper end surface of the air outlet 612 and the valve plate 82.

[0159] When the exhaust air valve 8 closes the air outlet 612, the valve plate 82 is located above the air outlet 612, and the edge of the valve plate 82 extends radially along the air outlet 612 beyond the inner wall surface of the air outlet 612. At this time, the two valve plates 82 can shield the air outlet 612 to effectively prevent the backflow of oil fume in the smoke exhaust pipe. There is an oil passing gap between the upper end surface of the air outlet 612 and the valve plate 82, so that the oil liquid in the first plugging cavity 75 can flow into the volute 61 from the air outlet 612 through this oil passing gap.

[0160] The setting of the exhaust air valve 8 can not only realize the functions of exhausting oil fume and preventing the backflow of oil fume, but also enable the oil liquid in the first plugging cavity 75 to flow back into the volute 61.

[0161] In some exemplary embodiments, as Figure 21 shown, the two valve plates 82 can be semi-circular, and one side where the straight edges of the two valve plates 82 are located is rotationally connected to the mounting shaft 81. When the two valve plates 82 are unfolded, they are approximately circular and can close the circular air outlet 612.

[0162] As Figure 17 、 Figure 18 and Figure 21 shown, a shaft hole 617 is provided on each of the first volute part 613 and the second volute part 614, and both ends of the mounting shaft 81 of the exhaust air valve 8 are respectively penetrated in the two shaft holes 617.

[0163] As Figure 17 、 Figure 18 and Figure 21 shown, a contact part 618 is provided on each of the first volute part 613 and the second volute part 614, and a protruding part 83 protruding downward is provided on the two valve plates 82. When the exhaust air valve 8 closes the air outlet 612, the protruding part 83 can be in contact with the contact part 618, so that an oil passing gap is formed between the upper end surface of the side wall of the air outlet 612 and the valve plate 82, as Figure 12 shown.

[0164] An embodiment of the present invention also provides a range hood, including a housing assembly and the fan fixing structure of any one of the above embodiments. An air suction cavity is provided in the housing assembly, the fan fixing structure is located in the air suction cavity, and the fixing plate 7 of the fan fixing structure is fixed to the housing assembly.

[0165] In some exemplary embodiments, as Figure 12As shown, a support rib 38 is provided inside the housing assembly. The fixing plate 7 can be supported on the support rib 38 and fixed to the support rib 38. The housing assembly includes a panel housing 1 and an air duct housing 3 located inside the panel housing 1. The inner cavity of the air duct housing 3 forms an air suction cavity. The upper end of the air duct housing 3 is bent to form the support rib 38, and the support rib 38 and the fixing plate 7 are fixed by screws.

[0166] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, a first air suction port 11 is provided on the housing assembly. The air outlet direction of the first air suction port 11 deviates from the axial air inlet 611 of the first fan assembly 6 of the fan fixing structure. Figure 3 The direction indicated by the arrow in

[0167] is the flow direction of the cooking fume. Since the air outlet direction of the first air suction port 11 of the housing assembly deviates from the axial air inlet 611 of the first fan assembly 6, the cooking fume can be guided into the axial air inlet 611 through the air guiding member 64 at this time.

[0168] In some exemplary embodiments, such as Figure 3 As shown, the first air suction port 11 is provided on the front side of the housing assembly 1 (i.e., Figure 3 the right side in

[0169] ). The first volute portion 613 of the first fan assembly 6 is located on the front side, and the second volute portion 614 is located on the rear side. The mounting hole 71 on the fixing plate 7 deviates backward relative to the center of the fixing plate 7. Figures 9 - 12 As shown in

[0170] an embodiment of the present invention provides an air outlet structure of a range hood, including an air outlet 612. An annular oil collecting groove surrounding the air outlet 612 is formed outside the air outlet 612. The top end of the oil collecting groove is open and the bottom end is closed. The oil collecting groove is arranged to be connected to a smoke exhaust pipe.

[0171] In some exemplary embodiments, such as Figure 12 , Figures 14 - 18As shown, the air outlet structure of the range hood further includes a fixing plate 7. The fixing plate 7 is provided with a mounting hole 71 and a first annular rib 74. The first annular rib 74 is disposed on the first plate surface of the fixing plate 7 and surrounds the mounting hole 71. An annular rib is provided on the outer side wall surface of the air outlet 612. The air outlet 612 passes through the mounting hole 71 and extends into the first annular rib 74. The annular rib abuts against and seals the second plate surface of the fixing plate 7. The second plate surface is opposite to the first plate surface. The first annular rib 74, the annular rib and the side wall of the air outlet 612 cooperate to form an oil collecting groove. Among them, the fixing portion 616 on the outer side wall surface of the air outlet 612 can be used as the annular rib on the outer side wall surface of the air outlet 612, and the first plugging cavity 75 can be used as the oil collecting groove.

[0172] The fixing plate 7 is placed substantially horizontally. The fixing plate 7 is provided with a mounting hole 71 penetrating in the plate thickness direction, and a first annular rib 74 surrounding the mounting hole 71 is provided on the first plate surface (i.e., the upper plate surface) of the fixing plate 7. An annular rib is provided on the outer side wall surface of the air outlet 612, and the annular rib is in a substantially horizontal state. When the air outlet 612 is assembled with the fixing plate 7, the air outlet 612 passes through the mounting hole 71 of the fixing plate 7 from bottom to top and extends into the first annular rib 74 until the upper end surface of the annular rib (i.e., the fixing portion 616) abuts against and seals the second plate surface (i.e., the lower plate surface) of the fixing plate 7. At this time, the first annular rib 74, the annular rib and the side wall of the air outlet 612 cooperate to form an oil collecting groove (i.e., the first plugging cavity 75). Among them, the side wall of the air outlet 612 forms the inner side wall of the oil collecting groove, the first annular rib 74 forms the outer side wall of the oil collecting groove, and the annular rib forms the bottom wall of the oil collecting groove.

[0173] It should be understood that the upper end surface of the annular rib can directly abut against the second plate surface of the fixing plate 7 to achieve sealing, thereby realizing the sealing of the bottom wall of the oil collecting groove and avoiding oil leakage at the bottom of the oil collecting groove. Of course, a sealing member can also be provided between the upper end surface of the annular rib and the second plate surface of the fixing plate 7 to achieve the sealing of the bottom wall of the oil collecting groove.

[0174] In some exemplary embodiments, the fixing plate 7 is fixedly connected to the annular rib.

[0175] The fixing plate 7 is fixedly connected to the annular rib on the air outlet 612 to realize the fixation of the fixing plate 7 and the air outlet 612. Among them, the fixing plate 7 and the annular rib can be fixed by screws, or fixed by other means such as clamping and welding.

[0176] In some exemplary embodiments, as Figure 12 shown, the inner side wall of the oil collecting groove (formed by the side wall of the air outlet 612) is lower than the outer side wall of the oil collecting groove (formed by the first annular rib 74), and the inner side wall of the oil collecting groove forms an overflow wall.

[0177] When the oil in the oil collecting tank overflows after being filled, the oil can flow over the inner side wall of the oil collecting tank and into the air outlet 612, and then into the main body of the range hood, preventing the oil from flowing out of the outer side wall of the oil collecting tank and onto the outside of the main body of the range hood.

[0178] In some exemplary embodiments, such as Figures 9 - 12 , Figure 22 shown, the air outlet structure of the range hood further includes a first pipe joint 91. The first pipe joint 91 is disposed substantially vertically (i.e., the axis is substantially vertical). A first insertion portion 911 for plugging and mating with the oil collecting tank is provided at the first end (i.e., the lower end) of the first pipe joint 91. A rotary slot 741 is provided on one of the outer side wall and the inner side wall of the oil collecting tank, and a snap 912 for rotatably engaging with the rotary slot 741 is provided on the first insertion portion 911.

[0179] Such as Figure 12 , Figures 14 - 16 shown, the rotary slot 741 is provided on the outer side wall of the oil collecting tank, and the position of the rotary slot is higher than the position of the oil collecting tank. The rotary slot 741 includes a snapping portion 742 disposed along the axial direction of the oil collecting tank and a clamping portion 743 disposed along the circumferential direction of the oil collecting tank. The snapping portion 742 and the clamping portion 743 are connected and communicate with each other and are in an L shape.

[0180] When the first pipe joint 91 is plugged into the oil collecting tank, the first pipe joint 91 disposed substantially vertically can move downward along the axial direction, so that the snap 912 is inserted into the snapping portion 742 of the rotary slot 741, and then the first pipe joint 91 is rotated to insert the snap 912 into the clamping portion 743 of the rotary slot 741, realizing the clamping connection between the first pipe joint 91 and the oil collecting tank, and making the connection of the first pipe joint 91 firm.

[0181] Of course, the rotary slot can also be provided on the inner side wall of the oil collecting tank, or the rotary slot is provided on the first pipe joint 91, and the snap is provided on the inner side wall or the outer side wall of the oil collecting tank.

[0182] In some exemplary embodiments, such as Figures 9 - 12 shown, the air outlet structure of the range hood further includes a connecting pipe 92. An annular second insertion slot 913 is provided on one of the second end (i.e., the upper end) of the first pipe joint 91 and the first end (i.e., the lower end) of the connecting pipe 92, and an annular second insertion portion 921 for plugging and mating with the second insertion slot 913 is provided on the other.

[0183] The connecting pipe 92 is disposed substantially vertically. The second insertion slot 913 and the second insertion portion 921 are respectively provided on the second end of the first pipe joint 91 and the first end of the connecting pipe 92. By inserting the second insertion portion 921 into the second insertion slot 913, the plugging connection between the first pipe joint 91 and the connecting pipe 92 can be realized.

[0184] In one exemplary embodiment, such as Figure 12As shown, the second insertion part 921 is arranged on the connecting pipe 92, the second insertion slot 913 is arranged on the first pipe joint 91, and the opening of the second insertion slot 913 faces upward. The connecting pipe 92 can be inserted into the second insertion slot 913 from bottom to top.

[0185] The inner side wall of the second insertion slot 913 is lower than the outer side wall of the second insertion slot 913, so that the inner side wall of the second insertion slot 913 forms an overflow wall. The second insertion slot 913 can collect the oil flowing down from the inner side wall surface of the connecting pipe 92. After the oil fills the second insertion slot 913, it can overflow from the inner side wall of the second insertion slot 913 into the interior of the first pipe joint 91, so that the oil can continue to flow downward, flow to the liquid collecting tank, and then flow into the interior of the range hood from the air outlet 612.

[0186] In some exemplary embodiments, such as Figures 9 - 11 and Figure 13 As shown, the air outlet structure of the range hood further includes a second pipe joint 93. One of the second end (i.e., the lower end) of the connecting pipe 92 and the first end (i.e., the upper end) of the second pipe joint 93 is provided with an annular third insertion slot 931, and the other is provided with an annular third insertion part 922 that is inserted and matched with the third insertion slot 931.

[0187] The second pipe joint 93 is arranged substantially vertically. The third insertion slot 931 and the third insertion part 922 are respectively arranged on the first end of the second pipe joint 93 and the second end of the connecting pipe 92. By inserting the third insertion part 922 into the third insertion slot 931, the insertion of the second pipe joint 93 and the connecting pipe 92 can be realized.

[0188] In one exemplary embodiment, such as Figure 13 As shown, the third insertion part 922 is arranged on the connecting pipe 92, the third insertion slot 931 is arranged on the second pipe joint 93, and the opening of the third insertion slot 931 faces downward. The second pipe joint 93 can move from bottom to top so that the third insertion part 922 is inserted into the third insertion slot 931.

[0189] Among them, as Figure 13 As shown, the inner side wall of the third insertion slot 931 is lower than the outer side wall of the third insertion slot 931, so that the structure of the second pipe joint 93 is the same as that of the first pipe joint 91. However, the second pipe joint 93 is inverted relative to the first pipe joint 91, and the second end (i.e., the upper end) of the second pipe joint 93 is arranged to be inserted and matched with the exhaust pipe. The second end of the second pipe joint 93 is provided with a fourth insertion part 932 for inserting into the exhaust pipe, and a second buckle 933 is arranged on the fourth insertion part 932, and the second buckle 933 is clamped with the exhaust pipe.

[0190] The second pipe joint 93 and the first pipe joint 91 have the same structure, which is convenient for the processing and forming of the first pipe joint 91 and the second pipe joint 93 and is beneficial to reducing costs.

[0191] The air outlet 612 is connected to the smoke exhaust pipe through the first pipe joint 91, the connecting pipe 92 and the second pipe joint 93. In this way, by setting the first pipe joint 91, the connecting pipe 92 and the second pipe joint 93 with different pipe diameters, the connection between the air outlet 612 with different apertures and the smoke exhaust pipe with different inner diameters can be achieved. Of course, the air outlet 612 can also be directly connected to the smoke exhaust pipe, or the air outlet 612 is connected to the smoke exhaust pipe through the first pipe joint 91, or through the first pipe joint 91 and the connecting pipe 92.

[0192] An embodiment of the present invention further provides a range hood, which includes a range hood body and the air outlet structure of the range hood according to any one of the above embodiments, and the air outlet 612 is arranged on the range hood body.

[0193] The range hood includes the air outlet structure described in any one of the above embodiments, and thus has all the beneficial effects of the above air outlet structure, which will not be elaborated here.

[0194] Although the present invention has been described with reference to the exemplary embodiments of the present invention, it should be understood that the present invention is not limited to the above embodiments or configurations. In addition, although various elements of the disclosed invention are shown in various exemplary combinations and configurations, other combinations and configurations including more, fewer or only a single element are also within the scope of the appended claims.

Claims

1. A range hood, characterized in that, It includes a panel housing. A long strip-shaped first air suction port is provided on the first panel wall of the panel housing. A noise reduction member is installed at the first air suction port inside the panel housing, and the noise reduction member extends along the length direction of the first air suction port. There are two noise reduction members, and the two noise reduction members are respectively located at both ends of the first air suction port in the width direction. The end faces of the two noise reduction members adjacent to each other form an air duct surface. Along the air inlet direction of the first air suction port, the air duct surface is a plane or a curved surface inclined towards the direction away from the other air duct surface, so as to form an air suction channel in a flared form between the two air duct surfaces. A first noise reduction clamping cavity and a second noise reduction clamping cavity are formed inside the noise reduction member, so that a hollow structure is formed inside the noise reduction member.

2. The smoke machine according to claim 1, characterized in that, The first noise reduction clamping cavity and the second noise reduction clamping cavity are separated by a partition wall. A first fixing member and a second fixing member are provided inside the panel housing. The first fixing member includes a first clamping portion that is clamped with the first noise reduction clamping cavity. The first clamping portion includes a first limiting portion. A first limiting and cooperating portion is provided inside the first noise reduction clamping cavity. The first limiting portion cooperates with the first limiting and cooperating portion to limit the movement of the noise reduction member towards the side close to the other noise reduction member. The second fixing member includes a second clamping portion that is clamped with the second noise reduction clamping cavity. The second clamping portion includes a second limiting portion. A second limiting and cooperating portion is provided inside the second noise reduction clamping cavity. The second limiting portion cooperates with the second limiting and cooperating portion to limit the movement of the noise reduction member towards the side close to the other noise reduction member.

3. The range hood according to claim 2, wherein The first clamping portion includes a first abutting portion. A first abutting and cooperating portion is provided inside the first noise reduction clamping cavity. The first abutting portion abuts against the first abutting and cooperating portion to limit the movement of the noise reduction member towards the direction away from the first panel wall. And / or, the second clamping portion includes a second abutting portion. A second abutting and cooperating portion is provided inside the second noise reduction clamping cavity. The second abutting portion abuts against the second abutting and cooperating portion to limit the movement of the noise reduction member towards the direction away from the first panel wall.

4. The range hood according to claim 2, characterized in that, It further includes an air duct housing located inside the panel housing. An air inlet is provided on the first air duct wall of the air duct housing. The noise reduction member passes through the air inlet. The edge of the second fixing member extends into the space between the first panel wall and the first air duct wall and is fixed to the first air duct wall. The second fixing member includes fixing plates provided on both sides of the second fixing member and extending along the width direction of the first air suction port. The fixing plates on both sides are fixed to the two ends of the noise reduction member by screws.

5. The range hood according to claim 2, wherein, The first noise reduction clamping cavity and the second noise reduction clamping cavity are arranged side by side on the side of the noise reduction member close to the first panel wall. The first noise reduction clamping cavity is located on the side close to the air suction channel, and the second noise reduction clamping cavity is located on the side away from the air suction channel. The first noise reduction clamping cavity includes a first mounting opening for inserting the first clamping portion, the second noise reduction clamping cavity includes a second mounting opening for inserting the second clamping portion, and both the first mounting opening and the second mounting opening face the wall of the first panel shell; One end of the air duct surface close to the air inlet side of the air suction channel is provided with an arc transition surface, and the arc transition surface is smoothly and transitionally connected to the wall of the first panel shell.

6. The range hood according to claim 2, characterized in that, The first noise reduction clamping cavity and the second noise reduction clamping cavity are arranged side by side on one side of the noise reduction member close to the wall of the first panel shell, and a third noise reduction cavity is provided on the side of the noise reduction member away from the wall of the first panel shell. The first noise reduction clamping cavity, the second noise reduction clamping cavity and the third noise reduction cavity are through slots arranged along the length direction of the noise reduction member.

7. The range hood according to claim 1, wherein, The panel housing includes an oil collecting air inlet chamber located below the wall of the first panel shell. A first oil leakage air inlet is provided on the bottom wall of the oil collecting air inlet chamber. The range hood further includes an oil cup installed below the oil collecting air inlet chamber. A gap is formed between the oil cup and the oil collecting air inlet chamber to form a strip-shaped second air suction opening, and the second air suction opening is communicated with the oil collecting air inlet chamber through the first oil leakage air inlet.

8. The range hood according to claim 7, wherein, It further includes an air duct housing located inside the panel housing. The air duct housing includes a second air duct shell wall located at the bottom. The second air duct shell wall is located above the oil collecting air inlet chamber. A second oil leakage air inlet is provided on the second air duct shell wall. The oil collecting air inlet chamber is communicated with the inner cavity of the air duct housing through the second oil leakage air inlet; The oil cup is strip-shaped, and the length direction of the oil cup is parallel to the length direction of the second air suction opening. The second air suction opening is formed between the first oil cup side wall of the oil cup and the bottom wall of the oil collecting air inlet chamber. The inner wall surface of the first oil cup side wall protrudes from one end of the bottom wall of the oil collecting air inlet chamber close to the second air suction opening. A guiding slide rail extending along the width direction of the oil cup is provided on one of the oil cup and the oil collecting air inlet chamber, and a guiding slider slidably matched with the guiding slide rail is provided on the other of the oil cup and the oil collecting air inlet chamber. And a limiting structure is provided between the oil cup and the oil collecting air inlet chamber to limit the sliding distance of the oil cup.

9. The range hood according to claim 8, wherein, The range hood further includes a first fan assembly and a second fan assembly. The first fan assembly is arranged inside the air duct housing. The second fan assembly is located above the first air suction opening, and the second fan assembly is located on the air inlet side of the first air suction opening and the second air suction opening. The second fan assembly is arranged to blow air downward; Smoke baffle plates are provided on both sides of the panel housing. The first air suction opening and the second air suction opening are located between the two smoke baffle plates.

Images