Range hood

Abstract

The utility model relates to a range hood. The range hood comprises an exhaust fume collecting hood, an air bellow, a fan and a partition assembly. One part of the separation assembly is arranged in the exhaust fume collecting hood, the other part of the separation assembly is arranged in the air bellow, and the separation assembly is connected with the exhaust fume collecting hood, the air bellow and the draught fan so that the ventilation flow channel can be separated into a first flow channel communicating the upper air inlet with the front air inlet and a second flow channel communicating the lower air inlet with the rear air inlet. The airflow entering the exhaust fume collecting hood and the air box from the upper air inlet and the airflow entering the exhaust fume collecting hood and the air box from the lower air inlet are completely separated by the separation assembly and flow independently, so that the defects of airflow turbulence, mutual interference and starting noise caused by the fact that the airflow on the front side and the airflow on the rear side share the same flow channel can be overcome; and therefore, the starting noise of the whole fan can be reduced, and the starting efficiency of the fan can be improved. In addition, the separating assembly can further improve the structural strength of the whole machine, and vibration noise can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a range hood. Background Art

[0002] Range hoods are common kitchen appliances in daily life, which can effectively remove the fumes generated during cooking in the kitchen. In the related art, most range hoods use fans with double-layered wind wheels, with air inlets on both the front and rear sides of the wind cabinet, and a wind wheel middle plate is provided between the double-layered wind wheels to separate the front and rear air intakes from each other. Specifically, when the range hood is working, the air in front of the wind wheel enters from the air inlet on the front side of the wind cabinet, and the air in the rear side of the wind wheel enters from the air inlet on the rear side of the wind cabinet.

[0003] The smoke hood of the range hood in the related art is also provided with two air inlets arranged in the front-to-back direction. The two air inlets share the same air inlet channel, and are connected to the two air inlets on the front and rear sides of the wind cabinet through the same air inlet channel. Under the suction force of the fan, the oil smoke in the external environment of the range hood enters the air inlet channel through the two air inlets respectively, and then enters the two air inlets from the air inlet channel respectively, enters the inside of the wind wheel through the two air inlets respectively, and is discharged outward through the wind wheel. However, when the whole machine is running, the air flow inside the smoke hood is relatively turbulent, the startup noise is loud, and the startup efficiency is poor; in addition, the air inlets on the front and rear sides of the wind wheel are prone to insufficient air intake, and the pressure distribution on both sides of the wind wheel center plate is uneven, causing the wind wheel surging noise. Summary of the invention

[0004] The technical problem solved by the present application is to provide a range hood which can effectively reduce noise and improve the fan starting efficiency.

[0005] The above technical problems are solved by the following technical solutions:

[0006] A range hood, comprising:

[0007] A smoke collecting hood, wherein the smoke collecting hood is provided with an upper air inlet and a lower air inlet;

[0008] A wind box, the wind box is connected to the top of the smoke collecting hood and communicates with the smoke collecting hood to form a ventilation flow channel;

[0009] A fan, the fan is arranged inside the wind box, the fan comprises a wind cabinet and a double-layer wind wheel rotatably arranged inside the wind cabinet, and the wind cabinet is provided with a front air inlet and a rear air inlet connected to the wind box on the front and rear opposite sides respectively; and

[0010] A partition assembly, wherein a portion of the partition assembly is disposed inside the smoke hood and another portion of the partition assembly is disposed inside the wind box. The partition assembly is respectively connected to the smoke hood, the wind box and the fan so as to separate the ventilation flow channel into a first flow channel connecting the upper air inlet and the front air inlet and a second flow channel connecting the lower air inlet and the rear air inlet.

[0011] In one embodiment, the partition component is arranged inside the wind box and extends to the area above the middle of the front air inlet of the wind cabinet, and its left and right sides are connected to the left and right inner walls of the wind box, and the partition component is arranged on the left and right sides of the inner part of the smoke hood and is connected to the left and right inner walls of the smoke hood;

[0012] And / or, the partition component is arranged on the part inside the wind box and extends to the area above the middle of the rear air inlet of the wind cabinet, and its left and right sides are connected to the left and right inner walls of the wind box, and the partition component is arranged on the left and right sides of the internal part of the smoke hood and is connected to the left and right inner walls of the smoke hood.

[0013] In one embodiment, the double-layer wind wheel includes a wind wheel middle plate and front blades and rear blades connected to opposite sides of the wind wheel middle plate, the length of the front blade is H1, the length of the rear blade is H2, the distance between the plane where the front air inlet of the wind cabinet is located and the front side plate of the bellows is d1, the distance between the plane where the rear air inlet of the wind cabinet is located and the rear side plate of the bellows is d2, the gas flow cross-sectional area of ​​the upper air inlet is S1, and the gas flow cross-sectional area of ​​the lower air inlet is S2; wherein, H1:H2=d1:d2=S1:S2. In one of the embodiments, the range hood further comprises two first side panels arranged inside the smoke hood and located at the rear side of the partition assembly, the two first side panels are respectively connected to the partition assembly and the rear side panel of the smoke hood, the spacing between the two first side panels tends to decrease along the airflow direction, the bottom ends of the two first side panels are respectively connected to the left panel and the right panel of the smoke hood, and the top ends of the two first side panels are respectively connected to the left panel and the right panel of the bellows; and / or,

[0014] The range hood also includes two second side panels arranged inside the smoke hood and located on the front side of the partition assembly, the two second side panels are respectively connected to the partition assembly and the front side panel of the smoke hood, the spacing between the two second side panels tends to decrease along the airflow direction, the bottom ends of the two second side panels are respectively connected to the left panel and the right panel of the smoke hood, and the top ends of the two second side panels are respectively connected to the left panel and the right panel of the bellows.

[0015] In one embodiment, the partition assembly includes a first guide plate, the first guide plate portion is arranged inside the smoke hood and connected to the two first side plates, the bottom end of the first guide plate is connected to the front side plate of the smoke hood, and the other part of the first guide plate extends into the interior of the wind box and is connected to the plane where the rear air inlet of the wind cabinet is located; and / or,

[0016] The partition assembly includes a second guide plate, which is partially arranged inside the smoke hood and connected to the two second side panels, the bottom end of the second guide plate is connected to the front side panel of the smoke hood, and the other part of the second guide plate extends into the interior of the wind box and is connected to the plane where the front air inlet of the wind cabinet is located.

[0017] In one embodiment, a first connecting plate is provided at the top end of each of the first side panels, and two of the first connecting plates are respectively connected to the left side panel and the right side panel of the bellows; a first flange is provided on the rear side of each of the first side panels, and the first flange is connected to the rear side panel of the smoke hood; and / or a second connecting plate is provided at the top end of each of the second side panels, and two of the second connecting plates are respectively connected to the left side panel and the right side panel of the bellows; a second flange is provided on the front side of each of the second side panels, and the second flange is connected to the front side panel of the smoke hood.

[0018] In one embodiment, the partition assembly includes a first guide plate, which is partially arranged inside the smoke hood, the bottom end of the first guide plate is connected to the front side plate of the smoke hood, and the other part of the first guide plate extends into the interior of the wind box and is connected to the plane where the rear air inlet of the wind cabinet is located; and / or, the partition assembly includes a second guide plate, which is partially arranged inside the smoke hood, the bottom end of the second guide plate is connected to the front side plate of the smoke hood, and the other part of the second guide plate extends into the interior of the wind box and is connected to the plane where the front air inlet of the wind cabinet is located.

[0019] In one embodiment, the first guide plate is formed with first ventilation holes which are arranged corresponding to the position of the rear air inlet and are interconnected, and the first guide plate is also connected to two opposite side walls and a top wall of the wind box respectively; and / or,

[0020] The second air guide plate is formed with second ventilation holes which are arranged corresponding to the positions of the front air inlets and are interconnected. The second air guide plate is also respectively connected to two opposite side walls and a top wall of the wind box.

[0021] In one embodiment, the first guide plate includes at least two split plates spliced ​​together; and / or the second guide plate includes at least two split plates spliced ​​together.

[0022] In one embodiment, the partition assembly includes a third guide plate arranged inside the smoke hood, the bottom end of the third guide plate is connected to the front side plate of the smoke hood, the third guide plate extends into the interior of the wind box and is connected to the middle position of the outer peripheral wall of the wind cabinet and to the two opposite side walls of the wind box.

[0023] In one of the embodiments, a sound-absorbing material is provided on the partition assembly.

[0024] The range hood described in this application has the following beneficial effects compared with the background technology:

[0025] Compared with the upper and lower air inlets in the related art that share the same ventilation channel, the above-mentioned range hood is separated into a first channel connecting the upper air inlet and the front air inlet and a second channel connecting the lower air inlet and the rear air inlet by setting a partition component connected to the smoke hood, the bellows, and the fan, so that when in use, the fan works to generate negative pressure at the front air inlet and the rear air inlet respectively, and the oil smoke enters the fan through the upper air inlet, the first channel and the front air inlet on the one hand, and enters the fan through the lower air inlet, the second channel and the rear air inlet on the other hand, and discharges the oil smoke to the outside. It can be seen that the airflow entering the smoke hood and the bellows from the upper air inlet and the airflow entering the smoke hood and the bellows from the lower air inlet are separated by the partition component and flow independently, so that the airflow turbulence, mutual interference and startup noise defects caused by the front and rear airflows sharing the same channel can be avoided, that is, the airflow can flow more smoothly, the startup noise of the whole machine can be reduced, and the startup efficiency of the fan can be improved. In addition, the partition components can increase the structural strength of the entire machine and effectively reduce vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a cross-sectional structural diagram of a range hood according to an embodiment of the present application.

[0029] Figure 2 for Figure 1 The structure is viewed along the direction of arrow A.

[0030] Figure 3 for Figure 1 The structure is viewed along the direction of arrow B.

[0031] Figure 4 It is a cross-sectional structural diagram of a range hood according to another embodiment of the present application.

[0032] Figure 5 This is a structural diagram of a range hood according to an embodiment of the present application without the rear side panels of the fume hood and the rear side panels of the bellows.

[0033] Figure 6 for Figure 5 A three-dimensional structural diagram of the structure shown.

[0034] Figure 7 This is a structural diagram of a first guide plate according to an embodiment of the present application.

[0035] Figure 8 This is a structural diagram of a first guide plate according to another embodiment of the present application.

[0036] Fig. 9 This is a structural diagram of a first guide plate according to yet another embodiment of the present application.

[0037] Reference numerals:

[0038] 10. Smoke hood; 101. Rear side panel; 102. Front side panel; 103. Left side panel; 104. Right side panel; 11. Upper air inlet; 111. Mesh; 12. Lower air inlet; 20. Bellows; 21. Front side panel; 22. Rear side panel; 23. Left side panel; 24. Right side panel; 30. Fan; 31. Wind cabinet; 311. Front air inlet; 312. Rear air inlet; 32. Double-layer wind wheel; 321. Wind wheel Middle plate; 322, front blade; 323, rear blade; 40, partition assembly; 41, first guide plate; 4101, first ventilation hole; 411, first split plate; 412, second split plate; 413, third split plate; 414, fourth split plate; 42, second guide plate; 51, first flow channel; 52, second flow channel; 61, first side plate; 611, first flange; 62, first connecting plate. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] See also Figure 1 or Figure 4, Figure 4 and Figure 1 The difference lies in the specific structure of the partition component 40. An embodiment of the present application provides a range hood, which includes: a smoke hood 10, a bellows 20, a fan 30 and a partition component 40. The smoke hood 10 is provided with an upper air inlet 11 and a lower air inlet 12. The bellows 20 is connected to the top of the smoke hood 10 and communicates with the smoke hood 10 to form a ventilation flow channel. The fan 30 is arranged inside the bellows 20, and the fan 30 includes a wind cabinet 31 and a double-layer wind wheel 32 rotatably arranged inside the wind cabinet 31. The front and rear opposite sides of the wind cabinet 31 are respectively provided with a front air inlet 311 and a rear air inlet 312 connected to the bellows 20. The double-layer wind wheel 32 includes a wind wheel middle plate 321 and a front side blade 322 and a rear side blade 323 connected to the front and rear opposite sides of the wind wheel middle plate 321. A portion of the partition component 40 is disposed inside the smoke hood 10, and another portion is disposed inside the wind box 20. The partition component 40 is respectively connected to the smoke hood 10, the wind box 20, and the fan 30, so that the ventilation flow channel is divided into a first flow channel 51 connecting the upper air inlet 11 and the front air inlet 311 and a second flow channel 52 connecting the lower air inlet 12 and the rear air inlet 312.

[0041] It should be noted that, in some embodiments, the first flow channel 51 and the second flow channel 52 are independent of each other, that is, they are not connected to each other. This can make the air flow smoother and effectively prevent the air flow turbulence defect caused by sharing the same flow channel in the related art.

[0042] Compared with the upper and lower air inlets 312 in the related art that share the same ventilation flow channel, the above-mentioned range hood is divided into a first flow channel 51 connecting the upper air inlet 11 and the front air inlet 311 and a second flow channel 52 connecting the lower air inlet 12 and the rear air inlet 312 by setting a partition component 40 connected to the smoke hood 10, the bellows 20, and the fan 30. When in use, the fan 30 generates negative pressure at the front air inlet 311 and the rear air inlet 312 respectively. On the one hand, the oil smoke enters the fan 30 through the upper air inlet 11, the first flow channel 51 and the front air inlet 311, and on the other hand, it simultaneously enters the fan 30 through the lower air inlet 12, the second flow channel 52 and the rear air inlet 312, and the oil smoke is discharged to the outside. It can be seen that the airflow entering the smoke hood 10 and the wind box 20 from the upper air inlet 11 and the airflow entering the smoke hood 10 and the wind box 20 from the lower air inlet 12 are separated by the partition component 40 and flow independently, which can avoid airflow turbulence, mutual interference and startup noise defects caused by the front and rear airflows sharing the same flow channel, that is, make the airflow flow more stable and smooth, reduce the startup noise of the whole machine, and improve the startup efficiency of the fan 30. In addition, the partition component 40 can also increase the structural strength of the whole machine and effectively reduce vibration noise.

[0043] It should be noted that, in the present embodiment, by reasonably and flexibly adjusting the position of the wind wheel center disk 321 and the position of the fan 30 in the wind box 20 along the front-to-back direction, combined with the mutually independent first flow channel 51 and second flow channel 52 provided by the partition assembly 40, the intake flow of the upper air inlet 11 and the lower air inlet 12 can be effectively distributed, thereby adjusting the negative pressure of the upper air inlet 11 and the lower air inlet 12, achieving precise flow distribution, and thus avoiding the wind wheel surging defect caused by uneven pressure distribution on the front and rear sides of the double-layer wind wheel 32.

[0044] In one embodiment, the portion of the partition component 40 disposed inside the wind box 20 extends to the area above the middle of the front air inlet 311 of the wind cabinet 31, and its left and right sides are connected to the left and right sides of the interior of the wind box 20. The partition component 40 is disposed on the left and right sides of the inner portion of the smoke hood 10 and is connected to the left and right inner walls of the smoke hood 10; in this way, the oil smoke in the first flow channel 51 can accurately enter the front air inlet 311 through the middle and lower areas of the front air inlet 311.

[0045] And / or, the portion of the partition assembly 40 disposed inside the wind box 20 extends to the area above the middle of the rear air inlet 312 of the wind cabinet 31, and its left and right sides are connected to the left and right inside of the wind box 20, and the left and right sides of the partition assembly 40 disposed inside the fume hood 10 are connected to the left and right inner walls of the fume hood 10. In this way, the oil smoke in the second flow channel 52 can accurately enter the rear air inlet 312 through the middle and lower areas of the rear air inlet 312.

[0046] See also Figures 1 to 3 In one embodiment, the length of the front blade 322 is H1, the length of the rear blade 323 is H2, the distance between the plane where the front air inlet 311 of the wind cabinet 31 is located and the front side plate 21 of the wind box 20 is d1, the distance between the plane where the rear air inlet 312 of the wind cabinet 31 is located and the rear side plate 22 of the wind box 20 is d2, the gas flow cross-sectional area of ​​the upper air inlet 11 is S1, and the gas flow cross-sectional area of ​​the lower air inlet 12 is S2; wherein, H1 / H2=0.8d1 / d2 to 1.2d1 / d2, S1 / S2=0.8d1 / d2 to 1.2d1 / d2. With such a configuration, the negative pressure of the upper air inlet 11 and the lower air inlet 12 can be balanced, and accurate flow distribution can be achieved, thereby avoiding the wind wheel surge defect caused by uneven pressure distribution on the front and rear sides of the double-layer wind wheel 32.

[0047] It should be noted that the length H1 of the front blade 322 refers to the distance between the wind wheel center plate 321 and the front air inlet 311 of the wind cabinet 31; the length H2 of the rear blade 323 refers to the distance between the wind wheel center plate 321 and the rear air inlet 312 of the wind cabinet 31. Figure 2The sum of the areas of all meshes 111 in the dotted frame C shown in FIG. 1; the gas flow cross-sectional area S2 of the lower air inlet 12 is also as shown in FIG. Figure 3 The opening area of ​​the dotted box D is shown.

[0048] In some embodiments, H1 / H2 includes but is not limited to 0.8d1 / d2, 0.9d1 / d2, d1 / d2, 1.1d1 / d2, 1.2d1 / d2, etc., which can be flexibly adjusted and set according to actual needs. Similarly, S1 / S2 includes but is not limited to 0.8d1 / d2, 0.9d1 / d2, d1 / d2, 1.1d1 / d2, 1.2d1 / d2, etc., which can be flexibly adjusted and set according to actual needs.

[0049] In a specific embodiment, H1:H2=d1:d2=S1:S2. Such a configuration can achieve a balance between the negative pressures of the upper air inlet 11 and the lower air inlet 12, achieve accurate flow distribution, and thus avoid the wind wheel surging defect caused by uneven pressure distribution on the front and rear sides of the double-layer wind wheel 32.

[0050] In some embodiments, H2 is greater than H1, that is, the wind pressure at the rear air inlet 312 is greater than the wind pressure at the front air inlet 311, and the gas flow rate entering the rear air inlet 312 is greater than the gas flow rate entering the front air inlet 311. Therefore, the rear air inlet 312 is called the main air inlet, and the front air inlet 311 is called the auxiliary air inlet.

[0051] See also Figure 1 , Figure 5 and Figure 6 In one embodiment, the range hood further comprises two first side panels 61 disposed inside the fume hood 10 and located at the rear side of the partition assembly 40. The two first side panels 61 are respectively connected to the partition assembly 40 and the rear side panel 101 of the fume hood 10, and the interval M between the two first side panels 61 decreases along the airflow direction. The bottom ends of the two first side panels 61 are respectively connected to the left side panel 103 and the right side panel 104 of the fume hood 10, and the top ends of the two first side panels 61 are respectively connected to the left side panel 23 and the right side panel 24 of the wind box 20. In this way, the two first side panels 61, the partition assembly 40, the rear side panel 101 of the smoke hood 10, the left side panel 103 and the right side panel 104 of the smoke hood 10 are combined to form a first tapered channel with a gradually decreasing cross-sectional area of ​​the air flow, that is, in a trumpet shape, so that the airflow entering from the lower air inlet 12 can flow smoothly into the interior of the wind box 20 along the first tapered channel, which can greatly reduce the vortex defects caused by the airflow entering from the lower air inlet 12 in the related technology when flowing through the right-angle corners of the left and right side panels 104 of the smoke hood 10, and thus the vortex noise can be greatly reduced.

[0052] In one embodiment, the range hood further comprises two second side panels (not shown in the figure) arranged inside the fume hood 10 and located in front of the partition assembly 40. The two second side panels are respectively connected to the partition assembly 40 and the front side panel 102 of the fume hood 10, and the spacing between the two second side panels decreases along the airflow direction. The bottom ends of the two second side panels are respectively connected to the left side panel 103 and the right side panel 104 of the fume hood 10, and the top ends of the two second side panels are respectively connected to the left side panel 23 and the right side panel 24 of the wind box 20. In this way, the two second side panels, the partition assembly 40, the front side panel 102 of the smoke hood 10, the left side panel 103 and the right side panel 104 of the smoke hood 10 are combined to form a second tapered channel with a gradually decreasing cross-sectional area of ​​the air flow, that is, in a trumpet shape, so that the airflow entering from the upper air inlet 11 can flow smoothly into the interior of the bellows 20 along the second tapered channel, which can greatly reduce the vortex defects caused by the airflow entering from the upper air inlet 11 in the related technology when flowing through the right-angle corners of the left and right side panels of the smoke hood 10, and thus can greatly reduce the vortex noise.

[0053] In this embodiment, since the air volume and flow rate of the upper air inlet 11 are significantly smaller than those of the lower air inlet 12, only two first side panels 61 are set on the rear side of the partition component 40, and the two second side panels on the front side of the partition component 40 can be omitted, thereby saving costs. At the same time, when the two second side panels on the front side of the partition component 40 are removed, the noise does not increase significantly.

[0054] See also Figure 1 , Figure 5 and Figure 6In a specific embodiment, the partition assembly 40 includes a first guide plate 41. The first guide plate 41 is arranged inside the smoke hood 10 and connected to the two first side plates 61. The bottom end of the first guide plate 41 is connected to the front side plate 102 of the smoke hood 10, and the specific connection position on the front side plate 102 of the smoke hood 10 is located between the lower air inlet 12 and the upper and lower air inlet 11. The first guide plate 41 extends into the interior of the wind box 20 and is connected to the plane where the rear air inlet 312 of the wind cabinet 31 is located. Among them, the first guide plate 41 can be connected to various regional positions of the rear end surface of the wind cabinet 31, as long as it can achieve that the airflow entering the lower air inlet 12 is guided to the rear air inlet 312. Optionally, the first guide plate 41 is connected to the bottom edge of the rear end surface of the wind cabinet 31, for example, so that the airflow entering the lower air inlet 12 can be guided to the rear air inlet 312. In this embodiment, in order to guide all the airflow entering the lower air inlet 12 to the rear air inlet 312, the first guide plate 41 specifically extends to the area above the middle of the rear air inlet 312 on the rear end surface of the wind cabinet 31. Specifically, the first guide plate 41 is connected to the entire rear end surface of the wind cabinet 31, and a first ventilation hole 4101 corresponding to the rear air inlet 312 of the wind cabinet 31 is provided on the first guide plate 41. In this way, under the guiding effect of the first guide plate 41 and the two first side plates 61, the airflow entering the lower air inlet 12 can smoothly enter the second flow channel 52, and enter the wind cabinet 31 through the second flow channel 52 and the rear air inlet 312, which can reduce noise.

[0055] See also Figure 4In a specific embodiment, the partition assembly 40 is not only provided with a first guide plate 41, but also includes a second guide plate 42. The second guide plate 42 is arranged inside the smoke hood 10 and is connected to the two second side panels. The bottom end of the second guide plate 42 is connected to the front side panel 102 of the smoke hood 10. The second guide plate 42 extends into the interior of the wind box 20 and is connected to the plane where the front air inlet 311 of the wind cabinet 31 is located. Among them, the second guide plate 42 can be connected to various areas of the front end surface of the wind cabinet 31, as long as it can achieve the airflow entering from the upper air inlet 11 to be guided to the front air inlet 311. Optionally, the second guide plate 42 is connected to the bottom edge of the front end surface of the wind cabinet 31, for example, so as to achieve the airflow entering from the upper air inlet 11 to be guided to the front air inlet 311. In this embodiment, in order to guide all the airflow entering the upper air inlet 11 to the front air inlet 311, the second air guide plate 42 specifically extends to the middle area above the front air inlet 311 on the front face of the wind cabinet 31. Specifically, the second air guide plate 42 is connected to the entire front face of the wind cabinet 31, and a second ventilation hole corresponding to the front air inlet 311 of the wind cabinet 31 is provided on the second air guide plate 42. In this way, under the guiding effect of the second air guide plate 42 and the two second side plates, the airflow entering the upper air inlet 11 can smoothly enter the first flow channel 51, and enter the wind cabinet 31 through the first flow channel 51 and the front air inlet 311, which can reduce noise. In addition, the airflow entering the lower air inlet 12 and the airflow entering the upper air inlet 11 flow in their respective flow channels respectively, and will not interfere with each other. There will be no oil smoke mixing and oil pollution accumulation defects in the space area between the first air guide plate 41 and the second air guide plate 42.

[0056] See also Figure 5 and Figure 6 In some embodiments, a first connecting plate 62 is provided at the top of each first side panel 61, and the two first connecting plates 62 are specifically arranged in parallel with each other, and are respectively connected to the left side panel 23 and the right side panel 24 of the wind box 20. In this way, it can not only be stably installed inside the smoke hood 10 and the wind box 20, but also the airflow entering from the lower air inlet 12 can be smoothly introduced into the wind box 20, so as to smoothly enter the wind cabinet 31. In addition, a first flange 611 is provided on the rear side of each first side panel 61, and the first flange 611 is connected to the rear side panel 101 of the smoke hood 10. Specifically, the connection method of the first flange 611 and the rear side panel 101 of the smoke hood 10 includes but is not limited to being connected by fasteners such as screws, pins, rivets, and clips, or being connected by bonding, welding, and the like. In this way, the first side panel 61 can be stably installed inside the wind cabinet 31, and can cooperate with the rear side panel 101 of the smoke hood 10 and the first guide plate 41 to form a first flow channel 51 sealed on all sides, so that the airflow can smoothly enter the wind cabinet 31 and reduce noise.

[0057] In one embodiment, similar to the structure of the first side panel 61, a second connecting plate is provided at the top of each second side panel, and the two second connecting plates are respectively connected to the left side panel 23 and the right side panel 24 of the wind box 20. In addition, a second flange is provided on the front side of each second side panel, and the second flange is connected to the front side panel 102 of the smoke hood 10.

[0058] It should be noted that, in order to realize the separation of the ventilation channel into the first channel 51 and the second channel 52, there are many forms of specific settings of the partition component 40 inside the smoke hood 10 and the wind box 20, which are not specifically limited here and can be flexibly adjusted and set according to actual needs, but at least it needs to satisfy: the bottom of the partition component 40 is located between the upper air inlet 11 and the lower air inlet 12, so that the airflow entering from the upper air inlet 11 and the lower air inlet 12 will not be interfered or turbulent; in addition, the top of the partition component 40 is located between the front air inlet 311 and the rear air inlet 312, so that the airflow of the first channel 51 enters the interior of the wind cabinet 31 through the front air inlet 311, and the airflow of the second channel 52 enters the interior of the wind cabinet 31 through the rear air inlet 312. The partition assembly 40 can be designed in the plane where the front air inlet 311 of the wind cabinet 31 is located, or can be designed in the plane where the rear air inlet 312 of the wind cabinet 31 is located or located in the middle position of the outer periphery of the wind cabinet 31, so as to play the role of dividing the airflow of the front air inlet 311 and the rear air inlet 312. In one embodiment, the partition assembly 40 can include a first guide plate 41 disposed inside the smoke hood 10; it can also include a second guide plate 42 disposed inside the smoke hood 10; it can also include a third guide plate disposed inside the smoke hood 10, the bottom end of the third guide plate is connected to the front side plate 102 of the smoke hood 10, the third guide plate extends into the interior of the wind box 20 and is connected to the middle position of the outer peripheral wall of the wind cabinet 31 and is connected to the two opposite side walls of the wind box 20.

[0059] In a specific embodiment, the partition assembly 40 includes a first guide plate 41. The first guide plate 41 is arranged inside the smoke hood 10, and the bottom end of the first guide plate 41 is connected to the front side plate 102 of the smoke hood 10. The first guide plate 41 extends into the interior of the wind box 20 and is connected to the plane where the rear air inlet 312 of the wind cabinet 31 is located. In this way, the airflow entering the lower air inlet 12 can smoothly enter the interior of the wind cabinet 31. Specifically, the first guide plate 41 is formed with a first ventilation hole 4101 that is arranged corresponding to the position of the rear air inlet 312 and is interconnected. The first guide plate 41 is also respectively connected to the two opposite side walls and the top wall of the wind box 20, so as to separate the wind box 20 into two independent spaces in the front and rear, and effectively prevent the airflows of the front air inlet 311 and the rear air inlet 312 from interfering with each other. Of course, as some optional solutions, the first guide plate 41 and the top wall of the wind box 20 may also form a separation space, or an opening may be opened on the top of the first guide plate 41, as long as the specific position of the separation space or the opening is higher than the rear air inlet 312.

[0060] In addition, the partition assembly 40 includes a second guide plate 42, which is arranged inside the smoke hood 10, and the bottom end of the second guide plate 42 is connected to the front side plate 102 of the smoke hood 10. The second guide plate 42 extends into the interior of the wind box 20 and is connected to the plane where the front air inlet 311 of the wind cabinet 31 is located. In this way, the airflow entering the upper air inlet 11 can smoothly enter the interior of the wind cabinet 31. Specifically, a second ventilation hole is formed on the second guide plate 42, which is arranged corresponding to the position of the front air inlet 311 and is interconnected. The second guide plate 42 is also respectively connected to the two opposite side walls and the top wall of the wind box 20, so as to separate the wind box 20 into two independent spaces in the front and rear, and effectively prevent the airflows of the front air inlet 311 and the rear air inlet 312 from interfering with each other. Of course, as some optional solutions, the second guide plate 42 and the top wall of the air box 20 may also form a separation space, or an opening may be opened on the top of the first guide plate 41, as long as the specific position of the separation space or the opening is higher than the front air inlet 311.

[0061] It should be noted that the first ventilation hole 4101 and the rear air inlet 312 are arranged in a position corresponding to each other, which means that in the front-to-back direction of the first air guide plate 41, the orthographic projection of the rear air inlet 312 on the plate surface of the first air guide plate 41 at least partially overlaps or completely overlaps with the contour area of ​​the first ventilation hole 4101. In addition, the second ventilation hole and the front air inlet 311 are arranged in a position corresponding to each other, which means that in the front-to-back direction of the second air guide plate 42, the orthographic projection of the front air inlet 311 on the plate surface of the second air guide plate 42 at least partially overlaps or completely overlaps with the contour area of ​​the second ventilation hole.

[0062] See also Figures 7 to 9 In some embodiments, the first guide plate 41 can be configured as an integrated structure, such as Figure 7 As shown, for example, it can be integrally formed by injection molding or by sheet metal processing, die casting, forging, etc., or it can include at least two split panels connected to each other. The structures of each split panel can be completely the same or completely different, and can be flexibly adjusted and set according to actual needs. For example, Figure 8 As shown, the first guide plate 41 includes a first split plate 411 with different structural shapes and a second split plate 412 connected to the first split plate 411. Fig. 9 As shown, the first guide plate 41 includes a third split plate 413 having the same structure and shape as the third split plate 413 and a fourth split plate 414 connected to the third split plate 413 .

[0063] In addition, the structural setting of the second guide plate 42 is similar to that of the first guide plate 41. It can be set as an integrated structure or include at least two split plates spliced ​​together. Compared with processing the entire second guide plate 42, processing a single split plate is less difficult.

[0064] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0065] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A range hood, characterized in that: The range hood comprises: A smoke collecting hood (10), wherein the smoke collecting hood (10) is provided with an upper air inlet (11) and a lower air inlet (12); A wind box (20), the wind box (20) being connected to the top of the smoke collecting hood (10) and being in communication with the smoke collecting hood (10) to form a ventilation flow channel; a fan (30), the fan (30) being arranged inside the wind box (20), the fan (30) comprising a wind cabinet (31) and a double-layer wind wheel (32) rotatably arranged inside the wind cabinet (31), and a front air inlet (311) and a rear air inlet (312) communicating with the wind box (20) being respectively arranged on front and rear opposite sides of the wind cabinet (31); and A partition component (40), wherein a portion of the partition component (40) is disposed inside the smoke hood (10), and another portion of the partition component (40) is disposed inside the wind box (20), and the partition component (40) is respectively connected to the smoke hood (10), the wind box (20), and the fan (30), so that the ventilation flow channel is divided into a first flow channel (51) connecting the upper air inlet (11) and the front air inlet (311), and a second flow channel (52) connecting the lower air inlet (12) and the rear air inlet (312).

2. The range hood according to claim 1, characterized in that: The partition component (40) is arranged inside the wind box (20) and extends to the area above the middle of the front air inlet (311) of the wind cabinet (31), and its left and right sides are connected to the left and right inner walls of the wind box (20); the partition component (40) is arranged inside the smoke hood (10) and its left and right sides are connected to the left and right inner walls of the smoke hood (10); And / or, the portion of the partition component (40) disposed inside the wind box (20) extends to the area above the middle of the rear air inlet (312) of the wind cabinet (31), and its left and right sides are connected to the left and right inner walls of the wind box (20); the left and right sides of the partition component (40) disposed inside the smoke hood (10) are connected to the left and right inner walls of the smoke hood (10).

3. The range hood according to claim 1, characterized in that: The double-layer wind wheel (32) comprises a wind wheel middle plate (321) and a front blade (322) and a rear blade (323) connected to opposite front and rear sides of the wind wheel middle plate (321); the length of the front blade (322) is H1, the length of the rear blade (323) is H2, the distance between the plane where the front air inlet (311) of the wind cabinet (31) is located and the front side plate (21) of the wind box (20) is d1, the distance between the plane where the rear air inlet (312) of the wind cabinet (31) is located and the rear side plate (22) of the wind box (20) is d2, the gas flow cross-sectional area of ​​the upper air inlet (11) is S1, and the gas flow cross-sectional area of ​​the lower air inlet (12) is S2; wherein, H1:H2=d1:d2=S1:S2.

4. The range hood according to claim 1, characterized in that: The range hood further comprises two first side panels (61) arranged inside the smoke hood (10) and located at the rear side of the partition assembly (40), the two first side panels (61) being respectively connected to the partition assembly (40) and the rear side panel (101) of the smoke hood (10), the spacing between the two first side panels (61) tends to decrease along the airflow direction, the bottom ends of the two first side panels (61) are respectively connected to the left side panel (103) and the right side panel (104) of the smoke hood (10), and the top ends of the two first side panels (61) are respectively connected to the left side panel (23) and the right side panel (24) of the wind box (20); and / or, The range hood further comprises two second side panels which are arranged inside the smoke hood (10) and located in front of the partition assembly (40); the two second side panels are respectively connected to the partition assembly (40) and the front side panel (102) of the smoke hood (10); the spacing between the two second side panels tends to decrease along the airflow direction; the bottom ends of the two second side panels are respectively connected to the left side panel (103) and the right side panel (104) of the smoke hood (10); and the top ends of the two second side panels are respectively connected to the left side panel (23) and the right side panel (24) of the bellows (20).

5. The range hood according to claim 4, characterized in that: The partition assembly (40) comprises a first guide plate (41), wherein a portion of the first guide plate (41) is disposed inside the smoke hood (10) and connected to the two first side plates (61), a bottom end of the first guide plate (41) is connected to a front side plate (102) of the smoke hood (10), and another portion of the first guide plate (41) extends into the interior of the wind box (20) and is connected to a plane where a rear air inlet (312) of the wind cabinet (31) is located; and / or, The partition assembly (40) comprises a second guide plate (42), wherein the second guide plate (42) is partially arranged inside the smoke hood (10) and connected to the two second side plates, the bottom end of the second guide plate (42) is connected to the front side plate (102) of the smoke hood (10), and the other part of the second guide plate (42) extends into the interior of the wind box (20) and is connected to the plane where the front air inlet (311) of the wind cabinet (31) is located.

6. The range hood according to claim 4, characterized in that: A first connecting plate (62) is provided at the top end of each first side plate (61), and the two first connecting plates (62) are respectively connected to the left side plate (23) and the right side plate (24) of the wind box (20); a first flange (611) is provided at the rear side of each first side plate (61), and the first flange (611) is connected to the rear side plate (101) of the smoke collecting hood (10); And / or, a second connecting plate is provided at the top end of each second side panel, and the two second connecting plates are respectively connected to the left side panel (23) and the right side panel (24) of the wind box (20); and a second flange is provided on the front side of each second side panel, and the second flange is connected to the front side panel (102) of the smoke hood (10).

7. The range hood according to claim 1, characterized in that: The partition assembly (40) comprises a first guide plate (41), wherein a portion of the first guide plate (41) is disposed inside the smoke hood (10), a bottom end of the first guide plate (41) is connected to a front side plate (102) of the smoke hood (10), and another portion of the first guide plate (41) extends into the interior of the wind box (20) and is connected to a plane where a rear air inlet (312) of the wind cabinet (31) is located; And / or, the partition assembly (40) includes a second guide plate (42), the second guide plate (42) is partially arranged inside the smoke hood (10), the bottom end of the second guide plate (42) is connected to the front side plate (102) of the smoke hood (10), and the other part of the second guide plate (42) extends into the interior of the wind box (20) and is connected to the plane where the front air inlet (311) of the wind cabinet (31) is located.

8. The range hood according to claim 7, characterized in that: The first guide plate (41) is formed with a first ventilation hole (4101) which is arranged corresponding to the position of the rear air inlet (312) and is in communication with each other, and the first guide plate (41) is also respectively connected to two opposite side walls and a top wall of the wind box (20); and / or, The second guide plate (42) is formed with second ventilation holes which are arranged corresponding to the positions of the front air inlets (311) and are interconnected. The second guide plate (42) is also respectively connected to two opposite side walls and a top wall of the wind box (20).

9. The range hood according to claim 8, characterized in that: The first guide plate (41) comprises at least two split plates that are spliced ​​together; and / or the second guide plate (42) comprises at least two split plates that are spliced ​​together.

10. The range hood according to claim 1, characterized in that: The partition assembly (40) comprises a third guide plate arranged inside the smoke hood (10), the bottom end of the third guide plate being connected to the front side plate (102) of the smoke hood (10), the third guide plate extending into the interior of the wind box (20) and being connected to the middle position of the outer peripheral wall of the wind cabinet (31) and to two opposite side walls of the wind box (20).

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