A range hood

Abstract

The present application discloses a range hood, which includes a housing, a smoke collecting plate, and an air curtain mechanism. The housing has a front end facing the user and a rear end opposite to the front end; the smoke collecting plate is arranged on the housing and cooperates with the housing to form a guide cavity. From the front end to the rear end of the housing, the distance between the side of the smoke collecting plate close to the front end and the stove top is smaller than the distance between the side of the smoke collecting plate close to the rear end and the stove top. The smoke inlet of the smoke collecting plate is provided with two layers of smoke inlet nets, and a guide space is formed between the two layers of smoke inlet nets; the air curtain mechanism is arranged at the front end of the housing, and its air outlet is connected to the guide space. The relative arrangement between the smoke collecting plate and the housing makes the distance between the side of the smoke collecting plate close to the user and the stove top smaller than the distance between the side of the smoke collecting plate away from the user and the stove top, which can gather the oil smoke in the direction away from the user, reduce the contact between the oil smoke and the user, and improve the problem of smoke leakage from the front end.

Description

Technical Field

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

[0002] Range hoods are indispensable electrical appliances in modern kitchens. They are mainly used to effectively remove oil smoke during the cooking process, keep the kitchen air clean and hygienic, and improve the comfort of the cooking environment.

[0003] In the related art, the smoke collecting plate of the range hood is tilted toward the stove top and the user. When the range hood is used, the oil smoke contacts the user over a large area, affecting the user's experience. Summary of the Invention

[0004] The present application provides a range hood to solve the technical problem in the related art that when the range hood is used, oil smoke contacts a large area of ​​the user, affecting the user's experience.

[0005] In order to solve the above technical problems, the present application adopts a technical solution: providing a range hood. The range hood includes a housing, a smoke collecting plate and an air curtain mechanism.

[0006] The housing has a front end facing the user and a rear end facing away from the front end. A smoke collecting plate is mounted on the housing and cooperates with the housing to form a diversion cavity. From the front to the rear of the housing, the distance between the front end of the smoke collecting plate and the stovetop is smaller than the distance between the rear end and the stovetop. The smoke collecting plate's smoke inlet is equipped with two layers of smoke inlet mesh, separating the two layers to form a diversion space. An air curtain mechanism is located at the front end of the housing, with its air outlet communicating with the diversion cavity.

[0007] In some embodiments, two layers of smoke inlet screens are arranged in parallel.

[0008] In some embodiments, the smoke inlet network is provided with at least one first air inlet structure and at least one second air inlet structure, the first air inlet structure is arranged near the front end of the box body, the second air inlet structure is arranged near the rear end of the box body, and the first air inlet structure and the second air inlet structure are arranged at intervals.

[0009] In some embodiments, the air inlet area of ​​the first air inlet structure is smaller than the air inlet area of ​​the second air inlet structure.

[0010] In some embodiments, at least one smoke inlet network is provided with two first air inlet structures and two second air inlet structures, wherein the two second air inlet structures are spaced apart along the arrangement direction from the left end to the right end of the box body; and the two first air inlet structures are spaced apart along the arrangement direction from the left end to the right end of the box body.

[0011] The spacing area between the two second air inlet structures, the spacing area between the two first air inlet structures, and the spacing area between the second air inlet structure and the corresponding first air inlet structure are connected to form a cross-shaped wind shielding area.

[0012] In some embodiments, the air curtain mechanism includes two air curtain assemblies, and the two air curtain assemblies are spaced apart along an arrangement direction from the left end to the right end of the box.

[0013] In some embodiments, the air curtain assembly includes a fan and an air duct, wherein the fan includes a first air inlet and a first air outlet; the air duct includes a second air inlet and a second air outlet, the second air inlet is connected to the first air outlet, and the second air outlet serves as the air outlet of the air curtain assembly and is connected to the guide space.

[0014] Among them, a third air inlet is provided at the top of the box body, and the third air inlet is connected to the first air inlet.

[0015] In some embodiments, the air duct extends along the arrangement direction from the left end to the right end of the box body. The fan located at the left end is arranged at the left end of the corresponding air duct, and the fan located at the right end is arranged at the right end of the corresponding air duct.

[0016] The axial direction of the second air outlet is perpendicular to the axial direction of the second air inlet.

[0017] In some embodiments, the air duct includes a first sub-duct and a second sub-duct, both extending along the arrangement direction from the left end to the right end of the box body, the first sub-duct and the second sub-duct are connected, the first sub-duct is provided with a second air inlet, and the second sub-duct is provided with a second air outlet.

[0018] The cross-sectional area of ​​the first sub-air duct is greater than the cross-sectional area of ​​the second sub-air duct.

[0019] In some embodiments, the range hood further includes an oil storage assembly, which is disposed at the front end of the housing and is used to collect oil stains on the smoke inlet net.

[0020] In some embodiments, the range hood further includes a frame assembly having a smoke guide cavity. The frame assembly is connected to the box body, and the smoke guide cavity is communicated with the flow guide cavity.

[0021] The range hood provided in some embodiments of the present application includes a housing, a smoke collecting plate, and an air curtain mechanism. The housing has a front end facing the user and a rear end facing away from the front end; the smoke collecting plate is disposed on the housing and cooperates with the housing to form a diversion cavity. From the front end to the rear end of the housing, the distance between the side of the smoke collecting plate near the front end and the stove top is smaller than the distance between the side of the smoke collecting plate near the rear end and the stove top. The smoke inlet of the smoke collecting plate is provided with two layers of smoke inlet nets, and a diversion space is formed between the two layers of smoke inlet nets; the air curtain mechanism is disposed at the front end of the housing, and its air outlet is connected to the diversion space. In the above-mentioned range hood, on the one hand, the relative position of the smoke collecting plate and the housing is arranged so that the distance between the side of the smoke collecting plate near the user and the stove top is smaller than the distance between the side of the smoke collecting plate away from the user and the stove top, thereby gathering the oil smoke toward the rear end of the housing, i.e., away from the user, so that the rear end of the housing becomes the main smoke inlet area, thereby reducing the contact between the oil smoke and the user. On the other hand, an air curtain mechanism is provided at the front end of the box, and the air outlet of the air curtain mechanism is connected to the guide space between the two layers of smoke inlet nets, so that the air curtain mechanism can blow the wind from the front end of the box to the rear end of the box when working, and can guide the oil smoke at the front end to gather at the rear end, thereby further improving the problem of smoke leakage at the front end and further reducing the contact between the oil smoke and the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0023] Figure 1 is a schematic cross-sectional view of a range hood in some embodiments of the present application;

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure when the middle box and the oil storage assembly are completely separated;

[0025] Figure 3 is another cross-sectional schematic diagram of a range hood in some embodiments of the present application;

[0026] Figure 4 is a schematic diagram of a side view of a range hood in some embodiments of the present application;

[0027] Figure 5 is a schematic structural diagram of an air curtain mechanism in some embodiments of the present application;

[0028] Figure 6 It is a cross-sectional schematic diagram of the air duct in some embodiments of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] According to some embodiments of the present application, see Figure 1 , Figure 1 Schematic diagram of a cross section of a range hood in some embodiments of the present application. Figure 1 As shown, the range hood 10 includes a housing 101 , a smoke collecting plate 102 and an air curtain mechanism 103 .

[0031] The box body 101 has a front end 1011 facing the user and a rear end 1012 disposed opposite to the front end 1011 .

[0032] The smoke collecting plate 102 is arranged on the box body 101 and cooperates with the box body 101 to form a guide cavity O1. From the front end 1011 to the rear end 1012 of the box body 101, the distance between the side of the smoke collecting plate 102 close to the front end 1011 and the stove surface is smaller than the distance between the side of the smoke collecting plate 102 close to the rear end 1012 and the stove surface. The smoke inlet of the smoke collecting plate 102 is provided with two layers of smoke inlet nets 1021, and a guide space O2 is formed between the two layers of smoke inlet nets 1021.

[0033] The air curtain mechanism 103 is disposed at the front end 1011 of the box body 101 , and an air outlet 1031 of the air curtain mechanism 103 is in communication with the flow guiding space O2 .

[0034] When the amount of oil smoke is high or the air intake of the range hood 10 is low, the oil smoke that is not sucked away in time will quickly rise to the front of the housing 101 and then leak into the room, causing air pollution. However, the present application can use the air curtain airflow formed by the wind blown by the air curtain mechanism 103 to promptly carry the rising or leaking oil smoke from the guide space O2 to the guide cavity O1, thereby preventing oil smoke leakage and improving the extraction effect of the range hood 10.

[0035] In addition, the air outlet 1031 of the air curtain mechanism 103 is arranged between the two layers of smoke inlet nets 1021. The wind curtain airflow formed by the wind blown out by the air curtain mechanism 103 can condense the oil stains, and then intercept the oil stains on the smoke inlet net 1021, reducing the pollution of the oil stains to the inside of the range hood 10, and preventing the oil stains from dripping into the pot or the stove top.

[0036] In some embodiments, when the range hood 10 is in an installed state or in use, the front end 1011 of the housing 101 faces the user, and the rear end 1012 of the housing 101 is disposed against an installation surface (such as a wall).

[0037] In some embodiments, the box body 101 may include a front panel, a back panel and a side panel, one end of the side panel is connected to the front panel, and the other end of the side panel is connected to the back panel. The front panel, the back panel and the side panel are arranged around the smoke collecting plate 102 to form a guide cavity O1 together with the smoke collecting plate 102.

[0038] In some embodiments, the guide cavity O1 refers to a space for smoke to flow formed by the side of the smoke collecting plate 102 away from the stove top and the box body 101 when the smoke collecting plate 102 is set on the box body 101.

[0039] Among them, the volume of the guide cavity O1 is related to the setting position of the smoke collecting plate 102 on the box body 101. The relative position between the smoke collecting plate 102 and the box body 101 can be set according to actual needs to provide guide cavities O1 of different volumes, and thus provide range hoods 10 with different smoke collecting capabilities.

[0040] In some embodiments, the relative positions of the two layers of smoke inlet nets 1021 on the smoke inlet of the smoke collecting plate 102 can be set according to actual conditions. The relative positions of the two layers of smoke inlet nets 1021 on the smoke inlet of the smoke collecting plate 102 determine the volume of the guide space O2.

[0041] In some embodiments, the structure of the two-layer smoke inlet net 1021 can be set according to actual smoke collection requirements, so that the structures of the two-layer smoke inlet net 1021 are the same or different, which is not limited here.

[0042] In some embodiments, as Figure 1 As shown, two layers of smoke inlet nets 1021 are arranged opposite and parallel to each other, with one layer of smoke inlet net 1021 facing the stovetop. When the range hood 10 is in operation, oil smoke passes through the two layers of smoke inlet nets 1021 in sequence. The two parallel layers of smoke inlet nets 1021 prevent large foreign objects from being drawn into the range hood 10, reduce oil contamination inside the range hood 10, and enhance the oil smoke filtering effect of the smoke inlet nets 1021.

[0043] At this time, the guide cavity O1 refers to the space for smoke flow formed by the box body 101 and one side of the smoke inlet net 1021 far away from the stove surface and the other side of the smoke inlet net 1021 close to the stove surface in the two parallel layers of smoke inlet nets 1021.

[0044] The volume of the guide cavity O1 is related to the setting position of a layer of smoke inlet net 1021 away from the stove surface on the box body 101. The relative position between the two layers of smoke inlet net 1021 and the box body 101 can be set according to actual needs to provide guide cavities O1 of different volumes, and thus provide range hoods 10 with different smoke collection capabilities.

[0045] In some embodiments, two layers of smoke inlet nets 1021 are arranged opposite and parallel to each other. After smoke enters through one layer of smoke inlet net 1021, which is positioned toward the stovetop, it is stored in the guide space O2 and then enters the guide cavity O1 from the guide space O2 through the other layer of smoke inlet net 1021. Because the air outlet 1031 of the air curtain mechanism 103 is connected to the guide space O2, the air blown out from the air outlet 1031 of the air curtain mechanism 103 is blown along the front end 1011 of the cabinet 101 toward the rear end 1012 of the cabinet 101 in the guide space O2. This can guide the oil smoke at the front end 1011 to gather at the rear end 1012, thereby improving the problem of smoke escaping from the front end 1011 and further reducing the contact between the oil smoke and the user.

[0046] In other embodiments, one layer of the two smoke inlet nets 1021 is tilted relative to the other layer of the smoke inlet net 1021 , and there is an angle between the two layers of the smoke inlet nets 1021 , which is an acute angle or an obtuse angle, and the oil smoke passes through at least one layer of the smoke inlet net 1021 .

[0047] In some embodiments, the smoke collecting plate 102 is tilted, specifically: the distance between the side of the smoke collecting plate 102 near the front end 1011 and the stove top is smaller than the distance between the side of the smoke collecting plate 102 near the rear end 1012 and the stove top. In this case, the angle between the side of the smoke collecting plate 102 near the rear end 1012 and the mounting surface is acute, forming a triangular area between the smoke collecting plate 102 and the mounting surface for collecting smoke.

[0048] When the range hood 10 is in operation, most of the oil smoke is drawn toward the side of the smoke collecting plate 102 near the rear end 1012 of the housing 101, specifically toward the triangular area. This allows the majority of the oil smoke to be moved away from the front end 1011 of the housing 101, and therefore away from the user, thus reducing contact between the oil smoke and the user. Furthermore, after being drawn toward the triangular area, the majority of the smoke passes through the diversion space O2 and the diversion cavity O1, reducing smoke escape from the front end 1011 and further minimizing contact between the smoke and the user.

[0049] In some embodiments, the two parallel layers of smoke inlet nets 1021 are arranged at an angle. Specifically, the distance between the sides of the two layers of smoke inlet nets 1021 near the front end 1011 and the stove top is smaller than the distance between the sides of the two layers of smoke inlet nets 1021 near the rear end 1012 and the stove top. In this case, the angle between each of the two layers of smoke inlet nets 1021 and the installation surface is an acute angle, and a triangular area is formed between the layer of smoke inlet nets 1021 facing the stove top and the installation surface, which is used to collect smoke.

[0050] When the range hood 10 is in operation, most of the oil smoke moves toward the side of the smoke inlet net 1021 facing the stove top, close to the rear end 1012 of the box body 101, that is, toward the triangular area.

[0051] In some embodiments, when two layers of smoke inlet nets 1021 are arranged in parallel, the distance between each of the two layers of smoke inlet nets 1021 and the stovetop increases linearly, i.e., gradually, from the front end 1011 to the rear end 1012 of the housing 101. When the range hood 10 is in operation, most of the oil smoke will move away from the front end 1011 of the housing 101 and enter the diversion space O2 from the side of the smoke inlet net 1021 facing the stovetop, near the rear end 1012 of the housing 101.

[0052] In some embodiments, when two layers of smoke inlet nets 1021 are arranged in parallel, the distance between each of the two layers of smoke inlet nets 1021 and the stovetop increases nonlinearly from the front end 1011 to the rear end 1012 of the housing 101. That is, there are increases and decreases, but the overall trend is an increase. When the range hood 10 is in operation, most of the oil smoke will move away from the front end 1011 of the housing 101 and enter the diversion space O2 from the side of the smoke inlet net 1021 facing the stovetop, near the rear end 1012 of the housing 101.

[0053] It is worth noting that compared with the setting method of linearly increasing the distance between the smoke inlet net 1021 and the stove top, the smoke collection effect achieved by nonlinearly increasing the distance between the smoke inlet net 1021 and the stove top is poor.

[0054] In some embodiments, as Figure 1 and Figure 2 As shown, Figure 2 yes Figure 1 The range hood 10 also includes an oil storage assembly 104 , which is located at the front end 1011 of the housing 101 and below the smoke inlet net 1021 . The oil storage assembly 104 is used to collect oil stains on the smoke inlet net 1021 .

[0055] Since the front end 1011 of the box body 101 faces the user, the oil storage assembly 104 is disposed at the front end 1011 of the box body 101 , which makes it easy for the user to disassemble or install the oil storage assembly 104 .

[0056] Furthermore, compared with the method in the related art in which the oil storage assembly 104 is arranged at the rear end 1012 of the box body 101, the oil storage assembly 104 of the present application is close to the user, which can reduce the obstacles encountered by the user when disassembling or installing the oil storage assembly 104, and reduce the possibility of the user being contaminated by oil stains on the range hood 10 during installation or disassembly.

[0057] In some embodiments, the oil storage component 104 is made of a transparent material and is disposed at the front end 1011 of the box body 101, so that the user can observe the oil storage component 104 and the oil collected in the oil storage component 104 and determine whether to replace or clean the oil storage component 104.

[0058] In some embodiments, the entire range hood 10 can be hidden inside a cabinet, that is, the front panel, side panels and back panel of the range hood 10 are all hidden inside the cabinet, and only the oil storage component 104 is retained on the outside to facilitate the user to disassemble the oil storage component 104 to pour out the waste oil.

[0059] Alternatively, the oil storage assembly 104 can be made into a pull-out type or a lift-out type. Whether the oil storage assembly 104 is a pull-out type or a lift-out type, the entire range hood 10 is completely embedded in the cabinet. When the oil storage assembly 104 needs to be maintained, the oil storage assembly 104 can be pulled out or lowered, which can improve the cleanliness of the kitchen.

[0060] In some embodiments, as Figure 1 and Figure 2 As shown, the oil storage assembly 104 includes an oil cup 1041, which can be used to collect oil stains from the smoke inlet network 1021. The shape, size, and number of the oil cup 1041 can be determined according to actual conditions and are not limited here.

[0061] In some embodiments, as Figure 1 As shown, the side of the smoke inlet net 1021 close to the front end 1011 of the box body 101 is opposite to the opening of the oil cup 1041. The oil on the smoke inlet net 1021 can flow to the side of the smoke inlet net 1021 close to the front end 1011 of the box body 101, and then flow into the oil cup 1041.

[0062] In some embodiments, as Figure 1 As shown, the cross-section of the oil cup 1041 is a right-angled trapezoid. The oil stains flowing down from the smoke inlet net 1021 first contact one side of the oil cup 1041. Compared with the direct contact with the bottom of the oil cup 1041, the oil stains first contact the side of the oil cup 1041. The side of the oil cup 1041 is tilted, which can buffer the oil stains and reduce the pollution caused by the reverse splashing of oil stains to the smoke inlet net 1021 or other components of the range hood 10.

[0063] In some embodiments, as Figure 1 and Figure 2 As shown, the housing 101 includes a receiving slot O3, which is located at the front end 1011 of the housing 101. The oil storage assembly 104 is located in the receiving slot O3 and includes a panel 1042 located at the front end of the oil cup 1041. When the oil storage assembly 104 is assembled in the receiving slot O3 of the housing 101, the side of the panel 1042 away from the oil cup 1041 is flush with the front end of the housing 101, thereby concealing the oil storage assembly 104 and improving the overall aesthetics of the range hood 10.

[0064] In some embodiments, the oil cup 1041 and the panel 1042 are made of transparent material, and the oil storage component 104 is arranged at the front end 1011 of the box body 101, which allows the user to observe the oil collected in the oil cup 1041 and determine whether to replace or clean the oil storage component 104.

[0065] In some embodiments, as Figure 1 and Figure 2 As shown, the range hood 10 further includes a frame assembly 105 , which has a smoke guide cavity O4 . The frame assembly 105 is connected to the housing 101 , and the smoke guide cavity O4 is in communication with the flow guide cavity O1 .

[0066] The rack assembly 105 is integrally formed with the housing 101 or is detachably connected thereto. When the rack assembly 105 is detachably connected thereto, the rack assembly 105 is directly connected to the housing 101, or the rack assembly 105 is connected to the housing 101 via other structures.

[0067] In some embodiments, as Figure 1 As shown, the rack assembly 105 includes a rack 1051 and a fan assembly 1052 . The rack 1051 is provided with a smoke guide cavity O4 , and the fan assembly 1052 is arranged in the rack 1051 .

[0068] The fan assembly 1052 includes a fan and a housing.

[0069] In some embodiments, as Figure 1 and Figure 2 As shown, the range hood 10 further includes an electronic control module 106 , which is disposed on a side of the housing 101 away from the stove top. The electronic control module 106 is electrically connected to the fan assembly 1052 , the fan, and the air curtain mechanism 103 , respectively, for controlling the operation of the range hood 10 .

[0070] In some embodiments, the range hood 10 further includes a check valve (not shown), which is disposed on a side of the frame assembly 105 away from the housing 101 and connected to an air outlet of the fan assembly 1052 .

[0071] Among them, after the smoke enters the guide cavity O1 from the guide space O2, since the smoke guide cavity O4 is connected to the guide cavity O1, the smoke can enter the smoke guide cavity O4 from the guide cavity O1. The smoke in the smoke guide cavity O4 is discharged through the check valve under the action of the fan assembly 1052.

[0072] In some embodiments, as Figure 1 and Figure 2 As shown, the range hood 10 further includes a smoke exhaust pipe 107 , which is connected to the check valve. The smoke exhaust pipe 107 can gather and discharge the smoke exhausted from the check valve to prevent smoke from escaping.

[0073] In one application scenario, when the range hood 10 is working, the smoke first passes through the layer of smoke inlet net 1021 facing the stove surface among the two layers of smoke inlet nets 1021. The wind curtain mechanism 103 works to form a wind curtain in the guide space O2 between the two layers of smoke inlet nets 1021. The smoke passes through the other layer of smoke inlet net 1021 to enter the guide cavity O1. Since the guide cavity O1 is connected to the smoke guide cavity O4, the smoke can enter the smoke guide cavity O4 from the guide cavity O1 under the action of the fan assembly 1052, and be discharged through the check valve and the exhaust pipe 107.

[0074] Compared with the related art, the range hood 10 provided in some embodiments of the present application does not require an opening and closing plate, which can reduce the thickness of the box body 101, increase the area of ​​the negative pressure zone, and improve the smoking effect.

[0075] In some embodiments, as Figure 1 As shown, the range hood 10 further includes a partition 108 disposed within the housing 101. The partition 108 is used to at least separate the guide chamber O1 into a first sub-chamber and a second sub-chamber arranged along the direction from the front end 1011 to the rear end 1012 of the housing 101. The first sub-chamber is disposed near the rear end 1012 of the housing 101, and the second sub-chamber is disposed near the front end 1011 of the housing 101. When the range hood 10 is in operation, most of the smoke enters the first sub-chamber.

[0076] According to some embodiments of the present application, see Figure 3 , Figure 3 FIG. 1 is another cross-sectional schematic diagram of a range hood in some embodiments of the present application. Figure 3 As shown, at least one layer of smoke inlet net 1021 is provided with at least one first air inlet structure 201 and at least one second air inlet structure 202. The first air inlet structure 201 is arranged near the front end 1011 of the box body 101, and the second air inlet structure 202 is arranged near the rear end 1012 of the box body 101. The first air inlet structure 201 and the second air inlet structure 202 are arranged at intervals.

[0077] It can be understood that when the first air inlet structure 201 and the second air inlet structure 202 are spaced apart, the oil smoke can be isolated to isolate the smoke entering from the air inlet of the first air inlet structure 201 and the air inlet of the second air inlet structure 202, and to prevent the rising smoke gathered near the air inlet of the second air inlet structure 202 from entering from the air inlet of the first air inlet structure 201, thereby reducing the contact between the oil smoke and the user.

[0078] In some embodiments, the air inlet area of ​​the first air inlet structure 201 is smaller than the air inlet area of ​​the second air inlet structure 202 . Since the second air inlet structure 202 is close to the rear end 1012 of the box body 101, when the air inlet area of ​​the second air inlet structure 202 is larger than the air inlet area of ​​the first air inlet structure 201, the air inlet area of ​​the smoke gathered in the triangular area between the smoke collecting plate 102 and the rear end 1012 of the box body 101 through the second air inlet structure 202 can be increased, so that the second air inlet structure 202 can cover more smoke relative to the first air inlet structure 201, and the volume of smoke passing through the air inlet of the first air inlet structure 201 is reduced, so that most of the smoke is inhaled by the second air inlet structure 202 which is farther away from the user, and the remaining small amount of smoke is inhaled by the first air inlet structure 201 which is closer to the user. This not only improves the smoke collecting effect of the box body 101, but also reduces or avoids the smoke from escaping toward the front end 1011 of the box body 101, thereby improving or avoiding problems such as airflow rushing towards the user, and helps to enhance the user experience.

[0079] In some embodiments, two layers of smoke inlet nets 1021 are arranged in parallel. The layer of smoke inlet net 1021 farther from the stovetop is provided with at least one first air inlet structure 201 and at least one second air inlet structure 202. The layer of smoke inlet net 1021 closer to the stovetop is provided with a third air inlet structure. The air inlet area of ​​the third air inlet structure is larger than that of the first air inlet structure 201 and the second air inlet structure 202. In this case, the layer of smoke inlet net 1021 closer to the stovetop serves as a coarse filter, while the layer of smoke inlet net 1021 farther from the stovetop serves as a fine filter. The third air inlet structure is used to filter large impurities, while the first air inlet structure 201 and the second air inlet structure 202 are used to filter fine particles. This achieves tiered filtration based on the size of the impurities, improving the filtration efficiency and effectiveness of the smoke inlet net 1021.

[0080] In some embodiments, the layer of smoke inlet mesh 1021 near the stovetop is a metal mesh, while the layer of smoke inlet mesh 1021 away from the stovetop is an activated carbon mesh. The metal mesh can intercept visible impurities such as grease and dust, while the activated carbon in the activated carbon mesh has a porous structure that can absorb harmful gases and odors in cooking fumes. This allows the smoke inlet mesh 1021 to filter out visible impurities and invisible substances in cooking fumes, effectively improving the filtering effect of the smoke inlet mesh 1021 and thus further improving the kitchen environment.

[0081] In other embodiments, a layer of smoke inlet net 1021 close to the stove surface is an electrostatic dust removal smoke inlet net, and a layer of smoke inlet net 1021 away from the stove surface is an activated carbon filter smoke inlet net. The electrostatic dust removal smoke inlet net can absorb impurities such as grease and dust through electrostatic adsorption, and cooperate with the activated carbon filter smoke inlet net to improve the filtering effect of the smoke inlet net 1021.

[0082] When the range hood 10 is working, the smoke first passes through the smoke inlet net 1021 facing the stove top and enters the guide space O2. The smoke gathered at the rear end 1012 of the box body 101 in the guide space O2 is guided to the vicinity of the second air inlet structure 202 of the smoke inlet net 1021 away from the stove top under the action of the wind curtain airflow formed by the wind blown by the wind curtain mechanism 103, and enters the guide cavity O1 and the smoke guide cavity O4 through the second air inlet structure 202. The smoke in the smoke guide cavity O4 is discharged from the range hood 10 under the action of the fan assembly 1052.

[0083] In some embodiments, two layers of smoke inlet nets 1021 are arranged in parallel, and each of the two layers of smoke inlet nets 1021 is provided with at least one first air inlet structure 201 and at least one second air inlet structure 202 .

[0084] When the range hood 10 is working, the smoke gathered at the rear end 1012 of the box body 101 is guided to the vicinity of the second air inlet structure 202 of the smoke inlet net 1021 facing the stove surface under the action of the wind curtain airflow formed by the wind blown by the wind curtain mechanism 103, and enters the guide space O2 through the second air inlet structure 202. The smoke gathered at the rear end 1012 of the box body 101 in the guide space O2 is guided to the vicinity of the second air inlet structure 202 of the smoke inlet net 1021 facing the stove surface under the action of the wind curtain airflow formed by the wind blown by the wind curtain mechanism 103, and enters the guide cavity O1 and the smoke guide cavity O4 through the second air inlet structure 202. The smoke in the smoke guide cavity O4 is discharged from the range hood 10 under the action of the fan assembly 1052.

[0085] The number of first air inlet structures 201 and second air inlet structures 202 provided in the smoke inlet net 1021 can be determined according to actual conditions. For example, the smoke inlet net 1021 is provided with one first air inlet structure 201 and one second air inlet structure 202. The smoke inlet net 1021 is provided with two first air inlet structures 201 and two second air inlet structures 202.

[0086] The number of first air inlet structures 201 and second air inlet structures 202 provided on the smoke inlet net 1021 is the same or different. For example, the smoke inlet net 1021 is provided with one first air inlet structure 201 and two second air inlet structures 202. The smoke inlet net 1021 is provided with two first air inlet structures 201 and one second air inlet structure 202.

[0087] The first air inlet structure 201 and the second air inlet structure 202 may have the same or different sizes. The difference in size may be reflected in length, width, air inlet area, and other aspects.

[0088] In some embodiments, as Figure 3As shown, each first air inlet structure 201 includes a plurality of air inlets. The number and area of ​​the air inlets in each first air inlet structure 201 can be determined according to actual conditions.

[0089] It can be understood that the first air inlet structure 201 and the second air inlet structure 202 can separate the smoke into multiple independent small smoke streams, which can improve the orderliness of the smoke and reduce the risk of turbulence caused by disordered collisions of the smoke. It can not only suppress the generation of noise and improve the quiet effect of the range hood 10, but also reduce the flow resistance of the smoke, thereby reducing the energy consumption of the range hood 10.

[0090] In some embodiments, as Figure 3 As shown, each second air inlet structure 202 includes a plurality of air inlets. The number and area of ​​the air inlets in each second air inlet structure 202 can be determined according to actual conditions.

[0091] In some embodiments, as Figure 3 As shown, the smoke inlet network 1021 is provided with two first air inlet structures 201 and two second air inlet structures 202 .

[0092] The two second air inlet structures 202 and the two first air inlet structures 201 are arranged at intervals along an arrangement direction from the front end 1011 to the rear end 1012 of the box body 101 .

[0093] The two second air inlet structures 202 and the two first air inlet structures 201 are arranged at intervals along an arrangement direction from the left end 1013 of the box body 101 to the right end 1014 of the box body 101 .

[0094] The two second air inlet structures 202 are spaced apart along an arrangement direction from the left end 1013 to the right end 1014 of the box body 101 .

[0095] The two first air inlet structures 201 are arranged at intervals along the arrangement direction from the left end 1013 to the right end 1014 of the box body 101 .

[0096] At this time, the interval area between the two second air inlet structures 202, the interval area between the two first air inlet structures 201, and the interval area between the second air inlet structure 202 and the corresponding first air inlet structure 201 are connected to form a cross-shaped windshield area.

[0097] It can be understood that existing stove tops are usually equipped with multiple stoves. The two second air inlet structures 202 and the two first air inlet structures 201 are arranged left and right to guide the smoke to the left end 1013 and the right end 1014. The second air inlet structure 202 and the first air inlet structure 201 are arranged front and back to guide the smoke from the front end 1011 to the rear end 1012, so that the range hood 10 can better absorb oil smoke and improve the smoke collection effect of the range hood 10.

[0098] The size of the spacing area between the two second air inlet structures 202 can be determined according to actual conditions. The size of the spacing area between the two first air inlet structures 201 can be determined according to actual conditions. The size of the spacing area between the second air inlet structure 202 and the corresponding first air inlet structure 201 can be determined according to actual conditions and is not limited here.

[0099] For example, the size of the interval area between the two second air inlet structures 202 is the same as the size of the interval area between the two first air inlet structures 201 .

[0100] In some embodiments, the air blown out of the air outlet 1031 of the air curtain mechanism 103 is parallel to the two layers of smoke inlet nets 1021. This can prevent the air blown out of the air outlet 1031 from hitting the smoke inlet nets 1021 and affecting the formation of the air curtain.

[0101] It is worth noting that since the wind curtain mechanism 103 is arranged at the front end 1011 of the box body 101, when the wind curtain mechanism 103 is working, the wind blown out from the air outlet 1031 of the wind curtain mechanism 103 blows along the front end 1011 to the rear end 1012 of the box body 101. When the first air inlet structure 201 is arranged close to the front end 1011 and the second air inlet structure 202 is arranged close to the rear end 1012, the wind blown out from the air outlet 1031 of the wind curtain mechanism 103 blows along the arrangement direction from the first air inlet structure 201 to the second air inlet structure 202.

[0102] Since the air outlet 1031 of the air curtain mechanism 103 is close to the first air inlet structure 201, the airflow near the first air inlet structure 201 is stronger, and the airflow above the second air inlet structure 202 is weaker. There is a difference in air pressure near the first air inlet structure 201 and the second air inlet structure 202. There is a pressure difference, which can guide most of the smoke through the air inlet of the second air inlet structure 202, reducing the volume of smoke passing through the air inlet of the first air inlet structure 201.

[0103] Since the wind blown out of the air outlet 1031 gradually weakens in the direction from the front end 1011 to the rear end 1012 of the box body 101, the second air inlet structure 202 is far away from the air outlet 1031. Under the influence of air resistance, etc., the wind blown out of the air outlet 1031 will not rush back to the stove surface, kitchen utensils or users, thereby reducing the pollution of oil stains on the stove surface and / or kitchen utensils and reducing the contact of oil smoke with users.

[0104] In some embodiments, the air curtain mechanism 103 includes at least one air curtain assembly 1032. The number of air curtain assemblies 1032 can be determined based on the number of the first air inlet structures 201 and / or the second air inlet structures 202, or based on the size of the first air inlet structures 201 and / or the second air inlet structures 202.

[0105] In one application scenario, see Figure 3 and Figure 4 , Figure 4 1 is a schematic diagram of a side view of a range hood in some embodiments of the present application. Figure 3 and Figure 4 As shown, the air curtain mechanism 103 includes two air curtain assemblies 1032 , and the two air curtain assemblies 1032 are spaced apart along an arrangement direction from the left end 1013 of the box body 101 to the right end 1014 of the box body 101 .

[0106] Specifically, the two air curtain assemblies 1032 are disposed at the front end 1011 of the box body 101 and on both sides of the smoke inlet net 1021 .

[0107] Compared with the related art, the two-layer smoke inlet net 1021 of the smoke inlet part of the smoke collecting plate 102 arranged at the front end 1011 of the box body 101 in the range hood 10 provided in some embodiments of the present application is a cross-shaped smoke inlet structure. The air intake area of ​​the air inlet on the front and rear sides of the cross-shaped smoke inlet structure can be reasonably divided, thereby realizing the division of the air intake ratio on the front and rear sides of the cross-shaped smoke inlet structure, thereby ensuring the smoking effect.

[0108] According to some embodiments of the present application, see Figures 3 to 5 , Figure 5 This is a schematic diagram of the structure of the air curtain mechanism in some embodiments of the present application. Figures 3 to 5 As shown, the air curtain mechanism 103 includes two air curtain assemblies 1032 , and each air curtain assembly 1032 includes a fan 301 and an air duct 302 .

[0109] The fan 301 includes a first air inlet 3011 and a first air outlet 3012. The air duct 302 includes a second air inlet 3021 and a second air outlet 3022. The second air inlet 3021 is connected to the first air outlet 3012. The second air outlet 3022 is connected to the guide space O2 as the air outlet 1031 of the air curtain assembly 1032.

[0110] It can be understood that the second air inlet 3021 is directly connected to the first air outlet 3012, which can reduce the path of the air curtain airflow formed by the air curtain assembly 1032 and does not require additional connecting pipes or fixing devices, thereby simplifying the structure of the air curtain mechanism 103.

[0111] In some embodiments, the first air inlet 3011 of the fan 301 is connected to the outside of the range hood 10 .

[0112] In some embodiments, as Figure 3 and Figure 5 As shown, the air duct 302 extends along the arrangement direction from the left end 1013 to the right end 1014 of the box body 101.

[0113] The fan 301 located at the left end 1013 of the housing 101 is disposed at the left end of the corresponding air duct 302 , and the fan 301 located at the right end 1014 of the housing 101 is disposed at the right end of the corresponding air duct 302 .

[0114] In some embodiments, the axial direction of the second air outlet 3022 is perpendicular to the axial direction of the second air inlet 3021 .

[0115] In some embodiments, the axes of the second air outlet 3022 are parallel to the two layers of smoke inlet mesh 1021 .

[0116] In some embodiments, see Figure 1 and Figure 6 , Figure 6 Schematic diagram of the cross section of the air duct in some embodiments of the present application. Figure 1 and Figure 6 As shown, the air duct 302 includes a first sub-duct 3023 and a second sub-duct 3024 .

[0117] The first sub-duct 3023 and the second sub-duct 3024 both extend along an arrangement direction from the left end 1013 of the box body 101 to the right end 1014 of the box body 101 .

[0118] The first sub-air duct 3023 is connected to the second sub-air duct 3024 . The first sub-air duct 3023 is provided with a second air inlet 3021 , and the second sub-air duct 3024 is provided with a second air outlet 3022 .

[0119] In some embodiments, the wind blown out from the first air outlet 3012 of the fan 301 is blown into the guide space O2 through the first sub-duct 3023 and the second sub-duct 3024. In order to smoothly form a wind curtain, the cross-sectional area of ​​the first sub-duct 3023 is required to be larger than the cross-sectional area of ​​the second sub-duct 3024 to prevent the wind curtain formed by the wind blown out from the second sub-duct 3024 from spreading too much, so that the wind pressure of the wind blown out from the first air outlet 3012 will be enhanced after entering the second sub-duct 3024 from the first sub-duct 3023.

[0120] Moreover, the cross-sectional area of ​​the first sub-duct 3023 is larger than the cross-sectional area of ​​the second sub-duct 3024, which can reduce the smoke from entering from the second sub-duct 3024, thereby reducing the pollution to the fan 301 and the air duct 302 of the air curtain mechanism 103, and preventing the air curtain mechanism 103 from being contaminated by oil and reducing its service life.

[0121] In some embodiments, the length of the first sub-duct 3023 is greater than the length of the second sub-duct 3024. The air blown out from the first air outlet 3012 of the fan 301 passes through the first sub-duct 3023 and the second sub-duct 3024 in sequence and then enters the guide space O2.

[0122] In some embodiments, as Figure 6 As shown, each air duct 302 includes a first side panel 401, a second side panel 402, and a top panel 403. The first side panel 401, the second side panel 402, and the top panel 403 are connected to form a first sub-air duct 3023 and a second sub-air duct 3024. The first side panel 401 cooperates with the top panel 403 to form a second air inlet 3021 of the air duct 302, and the second side panel 402 cooperates with the first side panel 401 to form a second air outlet 3022 of the air duct 302.

[0123] In some embodiments, the first side plate 401 is a curved plate, and the second side plate 402 is a right-angled plate.

[0124] In some embodiments, the first side panel 401 includes a first sub-panel 4011 and a second sub-panel 4012, one end of the first sub-panel 4011 is connected to the top panel 403, the other end of the first sub-panel 4011 is connected to one end of the second sub-panel 4012, and the other end of the second sub-panel 4012 is connected to the first air outlet 3012 of the fan 301.

[0125] The second side panel 402 includes a third sub-panel 4021 and a fourth sub-panel 4022 . One end of the third sub-panel 4021 is connected to the top panel 403 . The other end of the third sub-panel 4021 is connected to one end of the fourth sub-panel 4022 . The other end of the fourth sub-panel 4022 is connected to the first air outlet 3012 of the fan 301 .

[0126] The first sub-plate 4011 , at least part of the second sub-plate 4012 , and the top plate 403 cooperate to form the second air inlet 3021 of the air duct 302 . The second sub-plate 4012 and the fourth sub-plate 4022 cooperate to form the second air outlet 3022 of the air duct 302 .

[0127] In some embodiments, as Figure 6 As shown, the first sub-board 4011 is an arc-shaped board, and the angle between the first sub-board 4011 and the second sub-board 4012 is an obtuse angle. The angle between the third sub-board 4021 and the fourth sub-board 4022 is a right angle.

[0128] In some embodiments, a third air inlet is provided at the top of the box body 101 , and the third air inlet is connected to the first air inlet 3011 .

[0129] In summary, the range hood 10 provided in some embodiments of the present application, on the one hand, has a relative arrangement of the smoke collecting plate 102 and the housing 101 such that the distance between the side of the smoke collecting plate 102 closer to the user and the stovetop is smaller than the distance between the side of the smoke collecting plate 102 further from the user and the stovetop, thereby gathering the oil smoke away from the user and reducing contact between the oil smoke and the user. On the other hand, the air curtain mechanism 103 is disposed on the housing 101 at a position closer to the user. When in operation, the air curtain mechanism 103 can blow air from the side closer to the user to the side further from the user, thereby enhancing the gathering effect of the oil smoke away from the user and further reducing contact between the oil smoke and the user.

[0130] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A range hood, characterized in that: include: The box body has a front end facing the user and a rear end disposed opposite to the front end; A smoke collecting plate is provided on the box body and cooperates with the box body to form a guide cavity. From the front end to the rear end of the box body, the distance between the side of the smoke collecting plate close to the front end and the stove top is smaller than the distance between the side of the smoke collecting plate close to the rear end and the stove top. The smoke inlet of the smoke collecting plate is provided with two layers of smoke inlet nets, and a guide space is formed between the two layers of the smoke inlet nets. An air curtain mechanism is provided at the front end of the box body, and an air outlet of the air curtain mechanism is communicated with the guide space. When the air curtain mechanism is in operation, the air is blown from the front end of the box body to the rear end of the box body.

2. The range hood according to claim 1, characterized in that: The two layers of smoke inlet nets are arranged in parallel.

3. The range hood according to claim 1 or 2, characterized in that: The smoke inlet network is provided with at least one first air inlet structure and at least one second air inlet structure, wherein the first air inlet structure is arranged close to the front end of the box body, and the second air inlet structure is arranged close to the rear end of the box body, and the first air inlet structure and the second air inlet structure are arranged at intervals.

4. The range hood according to claim 3, characterized in that: The air inlet area of ​​the first air inlet structure is smaller than the air inlet area of ​​the second air inlet structure.

5. The range hood according to claim 3, characterized in that: At least one of the smoke inlet nets is provided with two of the first air inlet structures and two of the second air inlet structures; The two second air inlet structures are spaced apart along the arrangement direction from the left end of the box to the right end of the box; The two first air inlet structures are spaced apart along the arrangement direction from the left end of the box to the right end of the box; The spacing area between the two second air inlet structures, the spacing area between the two first air inlet structures, and the spacing area between the second air inlet structure and the corresponding first air inlet structure are connected to form a cross-shaped windshield area.

6. The range hood according to claim 1, characterized in that: The air curtain mechanism comprises: The two air curtain assemblies are spaced apart along an arrangement direction from the left end of the box to the right end of the box.

7. The range hood according to claim 6, characterized in that: The air curtain assembly comprises: a fan, comprising a first air inlet and a first air outlet; an air duct comprising a second air inlet and a second air outlet, wherein the second air inlet is connected to the first air outlet, and the second air outlet serves as an air outlet of the air curtain assembly and is in communication with the guide space; Wherein, a third air inlet is provided at the top of the box body, and the third air inlet is connected to the first air inlet.

8. The range hood according to claim 7, characterized in that: The air duct extends along the arrangement direction from the left end to the right end of the box; The fan located at the left end is arranged at the left end of the corresponding air duct, and the fan located at the right end is arranged at the right end of the corresponding air duct; Wherein, the axial direction of the second air outlet is perpendicular to the axial direction of the second air inlet.

9. The range hood according to claim 7, characterized in that: The air duct comprises: a first sub-duct and a second sub-duct, both extending in an arrangement direction from the left end of the box to the right end of the box, the first sub-duct being connected to the second sub-duct, the first sub-duct being provided with the second air inlet, and the second sub-duct being provided with the second air outlet; The cross-sectional area of ​​the first sub-air duct is greater than the cross-sectional area of ​​the second sub-air duct.

10. The range hood according to claim 1, characterized in that: The range hood further comprises: An oil storage component is arranged at the front end of the box body, and is used to collect oil stains on the smoke inlet net.

11. The range hood according to claim 1, characterized in that: The range hood further comprises: The frame assembly has a smoke guide cavity, the frame assembly is connected to the box body, and the smoke guide cavity is communicated with the flow guide cavity.

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