Range hood and fan box assembly thereof

Abstract

The fan box assembly comprises a fan box and an air outlet seat, the fan box comprises a hollow box body, a fan is installed in the box body, the box body comprises a side plate provided with an outlet, the side plate is provided with an air inlet, and the air outlet seat is provided with an air outlet. The air outlet seat is located on the outer side of the side plate and connected with the side plate at the outlet, the side plate is at least provided with a turned-over edge at the lower edge of the outlet, and the turned-over edge covers a fit clearance between the air outlet seat and the side plate. According to the range hood, oil liquid can be prevented from seeping from the fit clearance between the air outlet seat and the fan box side plate, the oil seepage prevention performance of the range hood is effectively improved, the problems of difficult maintenance and difficult cleaning caused by oil seepage are solved, and therefore the use experience of a user is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of kitchen home appliance equipment, especially to an oil fume exhaust fan and fan case assembly thereof. BACKGROUND

[0002] The oil fume exhaust fan has become one of the indispensable kitchen home appliance equipment in modern families. The main function of the oil fume exhaust fan is to remove oil fume during cooking, thereby maintaining a good kitchen environment.

[0003] For the common integrated oil fume exhaust fan, the following shortcomings exist: when the fan runs to drive the flow of flue gas, it inevitably produces a large noise, resulting in poor user experience during cooking. In order to overcome the above problems, a split type oil fume exhaust fan is proposed in the related art, which achieves a certain noise reduction effect.

[0004] The split type oil fume exhaust fan mainly includes a smoke collection module and an air extraction module separated from each other. The fan in the air extraction module usually needs to be set away from the user side.

[0005] In a typical application scenario, for an environment provided with a suspended ceiling, the air extraction module is at least partially installed above the suspended ceiling. The air extraction module usually includes a fan case and an air outlet seat. The air outlet seat is generally installed above the suspended ceiling.

[0006] The present inventor found that the existing oil fume exhaust fan air outlet seat and the fan case are prone to oil leakage at the docking position. Since the air outlet seat is located above the suspended ceiling, once oil leakage occurs between the fan case and the air outlet seat, the user cannot discover it in time; when the oil leakage is serious enough to cause large-area pollution of the suspended ceiling, the user may discover it; when the user discovers the above oil leakage problem, it is relatively troublesome to repair, and professional repair personnel need to disassemble the fan case for repair, in addition, the cleaning workload of the suspended ceiling polluted by oil in a large area is also very large.

[0007] Overall, the oil leakage prevention performance of the matching position between the air outlet seat and the fan case of the oil fume exhaust fan directly affects the user experience. SUMMARY

[0008] In view of the defects of the prior art, the utility model embodiment provides an oil fume exhaust fan and fan case assembly, which can prevent oil from leaking out of the matching gap between the air outlet seat and the side plate of the fan case, effectively improves the oil leakage prevention performance of the oil fume exhaust fan, solves the problems of difficult repair and cleaning caused by oil leakage, and significantly improves the user experience.

[0009] The specific technical scheme of the utility model embodiment is as follows:

[0010] A fan box assembly, the fan box assembly comprising: the fan box assembly comprising a fan box and an air outlet base, the fan box comprising a hollow box body, the box body being provided with an outlet, the air outlet base being located outside the side plate and being connected with the side plate at the outlet, the side plate being provided with a flange at least at the lower edge of the outlet, the flange covering the fitting gap between the air outlet base and the side plate.

[0011] In a preferred embodiment, a flange is provided at the left edge and / or the right edge and / or the upper edge of the outlet.

[0012] In a preferred embodiment, the bottom of the air outlet base is provided with an oil return port, the oil flowing downward along the flange can flow into the fan box through the oil return port.

[0013] In a preferred embodiment, an opening is provided on the fan box matching the oil return port, an oil return groove is provided between the oil return port on the air outlet base and the opening of the fan box.

[0014] In a preferred embodiment, the box body comprises opposite front and rear side plates, opposite left and right side plates, and a top plate, the left side plate or the right side plate is provided with the outlet near the top plate, the lower end opposite to the top plate forms an inlet of the fan box, and a smoke inlet cover is provided at the inlet of the fan box.

[0015] In a preferred embodiment, an oil guide plate is provided between the air outlet base and the smoke inlet cover, the air outlet base is connected to the side plate through a connecting piece, and the oil guide plate is used to guide the oil seepage at the connecting piece into the fan box.

[0016] In a preferred embodiment, the oil guide plate is fixed on the smoke inlet cover and / or the air outlet base.

[0017] In a preferred embodiment, the oil guide plate is integrally formed with the smoke inlet cover and / or the air outlet base.

[0018] In a preferred embodiment, the upper end of the oil guide plate is fixed on the air outlet base, the upper cover of the smoke inlet cover is arranged on the periphery of the fan box, and the lower end of the oil guide plate is inserted into the gap between the smoke inlet cover and the fan box.

[0019] In a preferred embodiment, the smoke inlet cover is provided with an oil leakage structure, and the oil flowing into the gap between the smoke inlet cover and the fan box on the oil guide plate can flow into the smoke inlet cover through the oil leakage structure.

[0020] In a preferred embodiment, the box body comprises opposite front and rear side plates, and opposite left and right side plates, and a top plate, the left or right side plate is arranged obliquely from top to bottom and deviates from the outer side of the fan, the outlet is arranged on the oblique part of the left or right side plate, and the lower end opposite to the top plate forms an inlet of the fan box, and a smoke inlet cover is arranged at the inlet of the fan box.

[0021] In a preferred embodiment, the lower edge of the air outlet seat extends to the vertical part of the left or right side plate.

[0022] In a preferred embodiment, an oil guide plate is arranged between the air outlet seat and the smoke inlet cover, and the oil guide plate is arranged on the vertical part of the left or right side plate.

[0023] In a preferred embodiment, the first dimension of the fan box along the left-right direction is between 100mm and 450mm, and the second dimension of the fan box along the front-rear direction is between 100mm and 450mm.

[0024] In a preferred embodiment, the fan box has an inlet for introducing smoke, and the center line of the inlet of the fan box is perpendicular to the axis of the impeller of the fan.

[0025] An oil smoke exhaust machine, comprising: the fan box assembly according to any one of the preceding claims.

[0026] In a preferred embodiment, the oil smoke exhaust machine further comprises a smoke pipe and a smoke collecting cavity, and the fan box assembly, the smoke pipe and the smoke collecting cavity are arranged close to a vertical wall surface and are sequentially connected from top to bottom.

[0027] In a preferred embodiment, the center line of the impeller of the fan of the fan box assembly is perpendicular to the vertical wall surface, or the included angle between the center line of the impeller of the fan of the fan box assembly and the vertical wall surface is greater than or equal to 45° and less than 90°.

[0028] The technical scheme of the utility model has the following remarkable beneficial effects:

[0029] In the embodiment of the present application, for the scenario that the side plate of the fan box and the air outlet seat have a certain fitting gap at the connected position, in order to prevent oil from seeping out through the fitting gap between the side plate of the fan box and the air outlet seat, the side plate of the fan box is provided with a turned edge at least at the lower edge of the fan box outlet, which covers the fitting gap between the air outlet seat and the side plate of the fan box, thereby guiding the oil away from the fitting gap between the air outlet seat and the side plate through the turned edge, preventing the oil from seeping out from the fitting gap, effectively improving the oil seepage prevention performance of the range hood, solving the problems of difficult maintenance and cleaning caused by oil seepage, and thereby significantly improving the user experience.

[0030] Specific embodiments of the present application are disclosed in detail in the following description and accompanying drawings, indicating the principles of the present application can be used in the manner. It should be understood that the embodiments of the present application are not limited in scope in this way. Within the scope and spirit of the appended claims, the embodiments of the present application include many changes, modifications and equivalents. The features described and / or shown for one embodiment can be used in the same or similar manner in one or more other embodiments, combined with the features in other embodiments, or replaced by the features in other embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present application disclosure in any way. In addition, the shape and scale of the components in the drawings are only illustrative, used to help understand the present application, and are not specific to the shape and scale of the components of the present application. Those skilled in the art can choose various possible shapes and scales to implement the present application according to specific circumstances under the guidance of the present application.

[0032] Figure 1 Structure diagram of a fan box assembly provided in the embodiment of the present application;

[0033] Figure 2 Structure diagram of a fan box assembly provided in the embodiment of the present application;

[0034] Figure 3 Front view of the cooperation between the fan box and the smoke inlet cover in a fan box assembly provided in the embodiment of the present application;

[0035] Figure 4 Side view of the cooperation between the fan box and the smoke inlet cover in a fan box assembly provided in the embodiment of the present application;

[0036] Figure 5 Cross-sectional view of the cooperation between the fan box and the smoke inlet cover in a fan box assembly provided in the embodiment of the present application;

[0037] Figure 6 A side view of the cooperation between the fan case and the smoke inlet cover and the air outlet seat in a fan case assembly according to an embodiment of the present application;

[0038] Figure 7 A sectional view of the cooperation between the fan case and the smoke inlet cover and the air outlet seat in a fan case assembly according to an embodiment of the present application;

[0039] Figure 8 A structural schematic diagram of a fan case in a fan case assembly according to an embodiment of the present application;

[0040] Figure 9 A structural schematic diagram of a smoke inlet cover in a fan case assembly according to an embodiment of the present application;

[0041] Figure 10 A structural schematic diagram of an extractor hood according to an embodiment of the present application;

[0042] Figure 11 An exploded view of an extractor hood according to an embodiment of the present application.

[0043] Reference signs of the present application:

[0044] 1. fan case;

[0045] 102. outlet of the fan case;

[0046] 103. inlet of the fan case;

[0047] 104. opening;

[0048] 10. fan;

[0049] 11. volute;

[0050] 131. front side plate;

[0051] 132. rear side plate;

[0052] 133. left side plate;

[0053] 134. right side plate;

[0054] 1341. flange;

[0055] 135. top plate;

[0056] 15. oil guide plate;

[0057] 2. smoke inlet cover;

[0058] 26. groove;

[0059] 27. oil leakage structure;

[0060] 3, smoke pipe;

[0061] 4, smoke collection cavity;

[0062] 5, air outlet seat;

[0063] 50, mounting portion;

[0064] 51, oil return port;

[0065] 52, oil return groove;

[0066] 6, ceiling;

[0067] 9, smoke exhaust pipe;

[0068] X, left-right direction;

[0069] Y, front-rear direction;

[0070] Z, height direction. DETAILED DESCRIPTION

[0071] The technical solutions of the present application will be described in detail below with reference to the drawings and specific embodiments, and it should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application, and after reading the present application, various equivalent modifications of the present application made by those skilled in the art fall within the scope defined by the appended claims.

[0072] It should be noted that when an element is referred to as "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0074] The oil fume extractor and the fan case assembly thereof provided in the embodiments of the present application can prevent oil from seeping out from the fitting gap between the air outlet seat and the side plate of the fan case, effectively improve the oil seepage prevention performance of the oil fume extractor, solve the problems of difficult maintenance and cleaning caused by oil seepage, and thus significantly improve the user experience.

[0075] Please refer toFigures 1 to 11 In the embodiments of the present application, a fan case assembly applied to a range hood can include a fan case 1 and an air outlet seat 5. The fan case 1 includes a hollow case body, and the case body is configured to accommodate a fan 10. The case body includes a side plate provided with an outlet. The air outlet seat 5 is located outside the side plate and is connected to the side plate at the outlet. The side plate is provided with a flange 1341 at least at the lower edge of the outlet. The flange 1341 covers the fitting gap between the air outlet seat 5 and the side plate.

[0076] For reference, please see Figure 1 and Figure 2 In the embodiments, the fan case assembly can mainly include the fan case 1 and the air outlet seat 5. The fan case 1 and the air outlet seat 5 can be assembled before leaving the factory, or can be assembled after leaving the factory.

[0077] For reference, please see Figure 10 The range hood to which the fan case assembly is applied can be a split type range hood. The air outlet seat 5 and at least part of the fan case 1 are configured to be installed above a ceiling 6. For the range hood, the fan 10 in the fan case 1 is the main source of noise. The air outlet seat 5 is arranged opposite to the air outlet of the fan 10. When the air outlet seat 5 and at least part of the fan case 1 provided with the fan 10 are arranged above the ceiling 6, the fan 10 is arranged away from the user side, which is conducive to reducing the influence of the noise generated by the fan 10 during operation on the user. In addition, when the fan 10 is arranged away from the user, the distance to the cooking range where the oil fume is generated is relatively far, so that the oil fume adsorbed on the impeller and volute 11 of the fan 10 can be effectively reduced, i.e., the oil is not easily accumulated on the fan 10, thereby ensuring the reliability of the fan 10 during operation and prolonging the service life of the fan 10.

[0078] For reference, please see Figure 11 The fan case 1 includes a hollow case body, and the case body is configured to accommodate a fan 10. The case body includes a side plate provided with an outlet. The air outlet seat 5 is arranged at the side plate of the fan case 1 provided with the outlet, and is configured to transitionally connect the outlet 102 of the fan case to the exhaust pipe 9. For the installation environment provided with the ceiling 6, the air outlet seat 5 is installed above the ceiling 6, and can be conveniently connected to the exhaust pipe 9 above the ceiling 6.

[0079] Specifically, the air outlet seat 5 is located outside the side plate and is connected with the side plate at the outlet 102 of the fan box. The air outlet seat 5 has a mounting portion 50 for cooperating with the side plate, which can be located outside the upper portion of the side plate. The mounting portion 50 can have a flange ring with an outer contour matching the structure of the outlet 102 of the fan box. When the outlet 102 of the fan box is a rectangular hole, the flange ring can have a rectangular structure; when the outlet 102 of the fan box is a circular hole, the flange ring can have a circular structure. When the outlet 102 of the fan box has other structures, the flange ring can be adapted accordingly. Specifically, the present application does not limit the specific structure of the mounting portion 50. In order to achieve fixed connection between the air outlet seat 5 and the fan box 1, the flange ring can be provided with a plurality of fastening holes at intervals in the circumferential direction. The air outlet seat 5 and the fan box 1 can be fixedly connected by fasteners arranged in the fastening holes.

[0080] Please refer to Figure 7 and Figure 8 The side plate of the fan box 1 and the air outlet seat 5 have a certain cooperation gap at the connection position. In order to prevent oil from leaking out through the cooperation gap between the side plate of the fan box 1 and the air outlet seat 5, the side plate of the fan box 1 is provided with a flange 1341 at least at the lower edge of the outlet 102 of the fan box, which covers the cooperation gap between the air outlet seat 5 and the side plate of the fan box 1, so as to guide the oil away from the cooperation gap between the air outlet seat 5 and the side plate of the fan box 1, preventing the oil from leaking out from the cooperation gap.

[0081] The flange 1341 covers at least the lower edge of the outlet 102 of the fan box. Specifically, the proportion of the arc length of the flange 1341 to the circumference of the outlet 102 of the fan box is not limited herein, and at least a small amount of oil flowing through the connection position of the side plate and the air outlet seat 5 under the action of gravity can no longer leak out through the cooperation gap, effectively improving the oil leakage prevention performance of the range hood and solving the problems of difficult maintenance and cleaning caused by oil leakage, thereby significantly improving the user experience.

[0082] It should be noted that in the present embodiment, a sealing member can also be provided between the side plate of the fan box 1 provided with the outlet and the air outlet seat 5 to reduce the risk of oil leakage. However, the sealing member is usually a consumable part, and after a period of use, it may not be able to seal tightly, and the oil leakage problem between the side plate and the air outlet seat 5 cannot be completely solved. In addition, if a metal hard contact seal is used, the cooperation gap can only be reduced, but the cooperation gap cannot be completely eliminated, and the oil leakage problem between the side plate and the air outlet seat 5 cannot be fundamentally solved.

[0083] In this embodiment of the application, by providing a flange 1341 at least at the lower edge of the outlet position of the side plate, the flange 1341 is used to cover the fitting gap between the air outlet seat 5 and the side plate, thus cleverly and thoroughly solving the problem of oil leakage between the side plate and the air outlet seat 5.

[0084] like Figure 8 As shown, in one embodiment, a flange 1341 is provided at the left edge and / or right edge and / or top edge of the outlet.

[0085] In this embodiment, in addition to providing a flange 1341 at the lower edge of the outlet of the fan box 1, at least one of the other edges of the outlet of the fan box 1 may also be provided with flanges 1341. Specifically, the edge of the outlet 102 of the fan box may be provided with a full circle of flanges 1341 in the circumferential direction to reliably ensure that the oil does not leak out from the gap between the two. At the same time, the manufacturing process is relatively simple, only requiring the side plate at the outlet 102 of the fan box to be flanged as a whole.

[0086] Please refer to the following: Figure 6 and Figure 7 In one embodiment, the bottom of the air outlet seat 5 is provided with an oil return port 51, through which the oil flowing downward along the flange 1341 can flow into the fan box 1.

[0087] In this embodiment, an oil return port 51 is provided at the bottom of the air outlet 5. The oil return port 51 is connected to the fan housing 1, and the oil flowing downward along the flange 1341 under gravity can flow into the fan housing 1 through the oil return port 51. Subsequently, the oil in the fan housing 1 can flow downward along the inner surface of the fan housing 1 to a designated position. This designated position can specifically be an oil cup for collecting oil, or other devices capable of collecting or processing oil.

[0088] like Figure 7 As shown, in a specific embodiment, the fan box 1 is provided with an opening 104 that matches the oil return port 51, and an oil return groove 52 is provided between the oil return port 51 on the air outlet seat 5 and the opening 104 of the fan box 1.

[0089] In the embodiment, the oil return port 51 on the air outlet seat 5 can be communicated with the fan case 1 through an oil return groove 52. The oil return groove 52 is arranged between the oil return port 51 on the air outlet seat 5 and the opening 104 of the fan case 1. Specifically, the oil return groove 52 can be an inclined channel structure, which has a first end for connecting with the oil return port 51 and a second end for connecting with the opening 104 of the fan case 1, and the height of the first end is higher than that of the second end. When the oil in the oil return port 51 flows into the oil return groove 52, it can flow downward into the fan case 1 under the action of gravity.

[0090] Please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 8 , in an embodiment, the box body includes opposite front side plate 131 and rear side plate 132, opposite left side plate 133 and right side plate 134, and top plate 135, the left side plate 133 or the right side plate 134 is arranged close to the position of the top plate 135, and the lower end opposite to the top plate 135 forms the inlet 103 of the fan case, and the smoke inlet cover 2 is arranged at the inlet 103 of the fan case.

[0091] In the embodiment, the box body of the fan case 1 can have the inlet 103 of the fan case for introducing flue gas and the outlet 102 of the fan case for discharging flue gas outward.

[0092] For example, the box body includes: opposite front side plate 131 and rear side plate 132, opposite left side plate 133 and right side plate 134, and top plate 135, wherein the top plate 135 can be located at the top end of the box body, the upper ends of the front side plate 131, the rear side plate 132, the left side plate and the right side plate 134 are connected with the top plate 135 to form a circumferential side wall, and the lower end of the circumferential side wall forms the inlet 103 of the fan case.

[0093] The smoke inlet cover 2 is arranged at the inlet 103 of the fan case and is sealingly connected with the fan case 1. Specifically, the relative position relationship between the smoke inlet cover 2 and the fan case 1 can be that the upper part of the smoke inlet cover 2 can cover the outside of the fan case 1. In the embodiments and drawings of the present application, the embodiment in which the upper part of the smoke inlet cover 2 covers the outside of the fan case 1 is mainly introduced in detail, and other embodiments can be adjusted adaptively with reference to the typical embodiment, which will not be described one by one here.

[0094] As Figure 2As shown, the fan box 1 has an inlet 103 for leading flue gas into the fan box and an outlet 102 for leading flue gas out of the fan box. For the vertically installed fan 10, the center line of the fan box inlet 103 is perpendicular to the axis of the impeller of the fan 10. Specifically, the fan box inlet 103 can be arranged downwardly so as to be directly connected to the smoke inlet hood 2 and facilitate corresponding assembly or disassembly operation by the operator.

[0095] As shown in FIGS. 1 and 2, the fan box 1 has an inlet 103 for leading flue gas into the fan box and an outlet 102 for leading flue gas out of the fan box. For the vertically installed fan 10, the center line of the fan box inlet 103 is perpendicular to the axis of the impeller of the fan 10. Specifically, the fan box inlet 103 can be arranged downwardly so as to be directly connected to the smoke inlet hood 2 and facilitate corresponding assembly or disassembly operation by the operator. Figure 5 、 Figure 6 and Figure 7 As shown in FIGS. 1 and 2, the fan box 1 has an inlet 103 for leading flue gas into the fan box and an outlet 102 for leading flue gas out of the fan box. For the vertically installed fan 10, the center line of the fan box inlet 103 is perpendicular to the axis of the impeller of the fan 10. Specifically, the fan box inlet 103 can be arranged downwardly so as to be directly connected to the smoke inlet hood 2 and facilitate corresponding assembly or disassembly operation by the operator.

[0096] In the present embodiment, the air outlet seat 5 can be connected to the outlet periphery of the side plate by a connecting member. Specifically, the connecting member can be a fastener, such as a threaded fastener, for fixing the air outlet seat 5 to the side plate, and the threaded fastener can be in the form of a bolt, for example.

[0097] The air outlet seat 5 and the side plate also have a certain risk of oil leakage at the position of the connecting member. Oil can leak outwardly through the position where the connecting member cooperates with the side plate and the air outlet seat 5. In order to guide the oil that can leak at the connecting member into the fan box 1, an oil guide plate 15 can be arranged between the air outlet seat 5 and the smoke inlet hood 2. Overall, the oil guide plate 15 is at least partially located in the lower part of the air outlet seat 5, thereby receiving the oil that leaks downwardly at the connecting member.

[0098] In one embodiment, the oil guide plate 15 is fixed to the smoke inlet hood 2 and / or the air outlet seat 5.

[0099] In the present embodiment, the lower part of the oil guide plate 15 can be fixed to the smoke inlet hood 2, or the upper part of the oil guide plate 15 can be fixed to the air outlet seat 5, or the upper part of the oil guide plate 15 can be fixed to the air outlet seat 5 and the lower part of the oil guide plate 15 can be fixed to the smoke inlet hood 2. The manner in which the oil guide plate 15 is fixed to the smoke inlet hood 2 and / or the air outlet seat 5 can be by a fastener, by a snap-fit mechanism, or by another manner, which is not specifically limited in the present application.

[0100] Alternatively, in another embodiment, the oil guide plate 15 is integrally formed with the smoke inlet hood 2 and / or the air outlet seat 5.

[0101] In this embodiment, the oil guide plate 15 can be integrally formed with the fume inlet hood 2, or the oil guide plate 15 can be integrally formed with the air outlet seat 5, or the oil guide plate 15 can be integrally formed with both the fume inlet hood 2 and the air outlet seat 5. When the oil guide plate 15 is integrally formed with the fume inlet hood 2 and / or the air outlet seat 5, it not only simplifies the assembly process but also ensures the sealing performance of the oil guide plate 15 itself with the fume inlet hood 2 and / or the air outlet seat 5 at the mating position.

[0102] In one specific embodiment, the upper end of the oil guide plate 15 is fixed on the air outlet seat 5, the upper part of the smoke inlet hood 2 covers the periphery of the fan box 1, and the lower end of the oil guide plate 15 is inserted into the gap between the smoke inlet hood 2 and the fan box 1.

[0103] In this embodiment, the oil guide plate 15 can be in the shape of an inclined cover plate. The oil guide plate 15 may include a main guide plate opposite to the side plate and a first side guide plate and a second side guide plate located on both sides of the main guide plate and connected to the side plate. The cross-sectional dimensions of the first side guide plate and the second side guide plate can gradually decrease in the lower middle part, so as to facilitate the lower end of the oil guide plate 15 to be inserted into the gap between the smoke inlet hood 2 and the fan box 1.

[0104] The upper end of the oil guide plate 15 can be fixed to the air outlet seat 5 using fasteners. For example, multiple fasteners can be spaced apart on the upper end of the oil guide plate 15 to fix it to the air outlet seat 5. Of course, the method of fixing the upper end of the oil guide plate 15 to the air outlet seat 5 is not limited to the above example. Those skilled in the art may make other modifications based on the technical essence of this application, but as long as the function and effect achieved are the same as or similar to those of this application, they should be covered within the scope of protection of this application.

[0105] like Figure 9 As shown, in one embodiment, the fume hood 2 is provided with an oil leakage structure 27, so that the oil flowing from the oil guide plate 15 into the fume hood 2 between the fume hood 2 and the fan box 1 can flow into the fume hood 2 through the oil leakage structure 27.

[0106] In this embodiment, a groove 26 is provided on the inner side of the smoke inlet hood 2, either by integral molding or by fixed installation. The groove 26 can be used to directly or indirectly limit the lower part of the fan box 1; in addition, the groove 26 can also be used to cooperate in setting a sealing structure.

[0107] Furthermore, the groove 26 has an oil leakage structure 27, which is used to guide the oil in the gap between the groove 26 and the fan box 1 into the interior of the fume hood 2.

[0108] In the embodiment, the groove 26 has opposite groove bottoms, an inner groove wall on the inner side of the groove bottom, and an outer groove wall on the outer side of the groove bottom, that is, the cover wall of the smoke inlet cover 2. The inner groove wall can be provided with an oil leakage structure 27, which can be at least one groove or opening formed in the inner groove wall.

[0109] When a gap is formed between the inner groove wall of the smoke inlet cover 2 and the fan box 1, the oil on the inner wall of the fan box 1 flows to the sealing structure and then flows into the gap between the inner groove wall of the groove 26 and the fan box 1. Since the inner groove wall has a certain height, the oil will accumulate in the gap. The accumulated oil will not only affect the sealing performance of the sealing structure, but also easily leak out when disassembled, and further increase the difficulty of cleaning the structure.

[0110] In the embodiment, the oil leakage structure 27 is arranged on the inner groove wall of the groove 26, which can efficiently and quickly guide the oil downward, thereby avoiding the accumulation of oil in the gap between the groove 26 and the fan box 1, and further avoiding the long-term immersion of the sealing structure in oil and the oil leakage problem when disassembled. In addition, it also does not increase the difficulty of cleaning the structure.

[0111] Please refer to Figure 2 , Figure 3 and Figure 8 In one embodiment, the box body can include opposite front and rear side plates 131 and 132, opposite left and right side plates 133 and 134, and a top plate 135. The left or right side plate 133 or 134 is inclined from top to bottom and away from the outer side of the fan 10 near the top plate 135. The outlet is arranged on the inclined portion of the left or right side plate 133 or 134, and the lower end opposite to the top plate 135 forms the inlet 103 of the fan box. The smoke inlet cover 2 is arranged at the inlet 103 of the fan box.

[0112] In the embodiment, the box body of the fan box 1 can have an inlet 103 of the fan box for introducing flue gas and an outlet 102 of the fan box for discharging flue gas.

[0113] For example, the box body includes opposite front and rear side plates 131 and 132, opposite left and right side plates 133 and 134, and a top plate 135. The top plate 135 can be located at the top end of the box body. The upper ends of the front, rear, left, and right side plates 131, 132, 133, and 134 are connected to the top plate 135 to form a circumferential side wall. The lower end of the circumferential side wall forms the inlet 103 of the fan box.

[0114] The smoke inlet hood 2 is sealingly connected to the fan box 1. Specifically, the relative position between the smoke inlet hood 2 and the fan box 1 can be that the upper portion of the smoke inlet hood 2 can cover the outer side of the fan box 1. In the embodiments and drawings of the present application, the embodiment in which the upper portion of the smoke inlet hood 2 covers the outer side of the fan box 1 is mainly introduced in detail, and other embodiments can be adjusted adaptively with reference to the typical embodiment, which will not be described one by one in detail herein.

[0115] In the present embodiment, the upper portion of the right side plate 134 provided with the outlet 102 of the fan box is inclined to deviate from the outer side of the fan 10. Since the upper portion of the right side plate 134 serves as the mounting base of the air outlet seat 5, when the right side plate 134 is inclined to deviate from the outer side of the fan 10, compared with the case of vertical extension or reverse inclination away from the fan 10, the air outlet seat 5 mounted on the upper portion of the right side plate 134 is closer to the fan 10, which is conducive to reducing the installation size of the fan box assembly in the horizontal direction, and further conducive to reducing the mounting hole in the ceiling 6, so that the mounting hole in the ceiling 6 tends to be miniaturized.

[0116] In addition, for users provided with a cabinet, when the size of the mounting hole in the ceiling 6 is controlled within a small range (close to the maximum cross section of the circumferential side wall of the fan box 1), it can be conveniently hidden in the cabinet of the user, thereby ensuring that the fan box assembly of the range hood can meet the aesthetic requirements as much as possible during installation.

[0117] In order to ensure that the fan box 1 can be installed in the cabinet of a conventional user's home, the first dimension of the fan box 1 along the left-right direction X is between 100 mm and 450 mm, and the second dimension of the fan box 1 along the front-rear direction Y is between 100 mm and 450 mm. Taking vertical installation as an example, when the air inlet of the fan 10 volute 11 is arranged towards the front-rear side, the first dimension can be the relative length dimension, and the second dimension can be the relative width dimension. Generally, based on the structure of the volute 11, the length dimension is greater than the width dimension. When the air inlet of the fan 10 volute 11 is arranged towards the left-right side, the first dimension can be the relative width dimension, and the second dimension can be the relative length dimension. In the embodiments and drawings of the present application, the air inlet of the fan 10 volute 11 is mainly arranged towards the front-rear side.

[0118] When the right side plate 134 is arranged to be inclined to the outside of the fan 10, it is beneficial to move the air outlet seat 5 installed on the upper part of the right side plate 134 to the side of the fan 10. In the height direction Z, the air outlet seat 5 can be installed in the height space formed after the upper part of the right side plate 134 is inclined, so that the highest position of the fan box assembly can be effectively controlled.

[0119] In addition, since the air outlet seat 5 on the upper part of the right side plate 134 is moved to the side of the fan 10, the cross section of the upper part of the right side plate 134 is smaller than that of the lower part. In this way, during the process of installing the fan box assembly into the ceiling 6 mounting hole, the inclined structure of the right side plate 134 can be used for guidance, so that the fan box assembly can be quickly and conveniently installed into the ceiling 6.

[0120] In an embodiment, the lower edge of the air outlet seat 5 extends to the vertical part of the left side plate 133 or the right side plate 134.

[0121] In the embodiment, taking the upper part of the right side plate 134 as an example, the lower edge of the air outlet seat 5 installed on the upper part of the right side plate 134 can extend to the vertical part of the right side plate 134. In this way, the oil permeable position (such as screw hole position) for connecting the air outlet seat 5 and the right side plate 134 can be close to or located at the vertical part of the right side plate 134. When the oil permeable position is close to or located at the vertical part of the right side plate 134, it is beneficial to guide the oil to the oil permeable position. In addition, it is also beneficial to subsequent maintenance and cleaning operations.

[0122] Please refer to Figure 7 and Figure 8 In a specific embodiment, an oil guide plate 15 is arranged between the air outlet seat 5 and the smoke inlet cover 2, and the oil guide plate 15 is arranged at the vertical part of the left side plate 133 or the right side plate 134.

[0123] In the embodiment, still taking the upper part of the right side plate 134 as an example, for the embodiment in which the oil guide plate 15 is arranged between the air outlet seat 5 and the smoke inlet cover 2, since the oil permeable position is close to or located at the vertical part of the right side plate 134, the oil guide plate 15 can be directly arranged at the vertical part of the right side plate 134. Overall, it is beneficial to simplify the structure of the oil guide plate 15, and specifically, the structure of the side guide plate of the oil guide plate 15 and the right side plate 134 can be simplified. In addition, since the oil guide plate 15 is arranged at the vertical part of the right side plate 134, when the fan box 1 is installed, the oil guide plate 15 can be located at the lower part of the ceiling 6 as a whole, which is beneficial to subsequent cleaning and maintenance of the oil guide plate 15.

[0124] Please refer to Figure 10 and Figure 11The oil smoke machine in the embodiment of the present application also comprises the fan case assembly. The oil smoke machine can achieve the technical effects realized by the fan case assembly. For details, please refer to the specific description of the above embodiment, which will not be repeated here.

[0125] In one embodiment, the oil smoke machine can further comprise a smoke pipe 3 and a smoke collecting cavity 4. The fan case assembly, the smoke pipe 3 and the smoke collecting cavity 4 are arranged close to the vertical wall and are sequentially connected from top to bottom.

[0126] In the embodiment, the oil smoke machine can comprise the fan case assembly, the smoke pipe 3 and the smoke collecting cavity 4. In the flow direction of the oil smoke, the smoke collecting cavity 4, the smoke pipe 3 and the fan case assembly can be sequentially arranged. Specifically, the smoke inlet cover 2, the smoke pipe 3 and the fan case assembly can be sequentially arranged vertically close to the wall from bottom to top. The smoke inlet cover 2 is arranged relatively close to the cooking area of the user and is used to collect the oil smoke generated during cooking. The fan case assembly comprises the fan case 1 and the fan 10 arranged in the fan case 1. The fan 10 is used to generate suction force after being started. The fan case 1 is arranged relatively far away from the cooking area of the user.

[0127] Generally, in a general kitchen environment, the top of the kitchen space is provided with a suspended ceiling 6. The oil smoke machine in the embodiment of the present application is mainly exemplified by taking the case of being applied in the kitchen environment provided with the suspended ceiling 6.

[0128] In one embodiment, the center line of the impeller of the fan 10 of the fan case assembly is perpendicular to the vertical wall, or the included angle between the center line of the impeller of the fan 10 of the fan case assembly and the vertical wall is greater than or equal to 45° and less than 90°.

[0129] In the embodiment, the center line of the impeller of the fan 10 is perpendicular to the vertical wall, or the included angle between the center line of the impeller of the fan 10 of the fan case assembly and the vertical wall is greater than or equal to 45° and less than 90°, which specifically means that the fan 10 is in a vertical installation form. When the fan 10 is in the vertical installation form, the center line of the impeller can be horizontally arranged or is inclined at a small angle relative to the horizontal plane. When the center line of the impeller is inclined at a small angle relative to the horizontal plane, the included angle between the center line of the impeller and the horizontal plane is within 45°.

[0130] It should be noted that in the description of the present application, the terms "first", "second" and the like are only used for descriptive purposes and to distinguish similar objects, and there is no prior and posterior order between them, nor can it be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0131] The above-mentioned various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0132] The above is only several embodiments of the present application, although the embodiments disclosed by the present application are as above, but the content is only the embodiment adopted for the purpose of facilitating the understanding of the present application, and is not used to limit the present application. Any person skilled in the art of the present application, without departing from the spirit and scope of the present application, can make any modification and change in the form and details of the embodiment, but the patent protection scope of the present application still needs to be limited by the scope defined by the appended claims.

Claims

1. A fan case assembly, characterized in that, the fan case assembly comprises a fan case and an air outlet base, the fan case comprises a hollow case body for mounting a fan, the case body comprises a side plate provided with an outlet, the air outlet base is located outside the side plate and is connected with the side plate at the outlet, the side plate is provided with a flange at least at the lower edge of the outlet, the flange covers the fitting gap between the air outlet base and the side plate.

2. The fan box assembly of claim 1, wherein, the left edge and / or the right edge and / or the upper edge of the outlet is provided with a flange.

3. The fan box assembly of claim 1, wherein, the bottom of the air outlet base is provided with an oil return port, the oil flowing downward along the flange can flow into the fan case through the oil return port.

4. The fan case assembly of claim 3, wherein, the fan case is provided with an opening matched with the oil return port, and an oil return groove is arranged between the oil return port on the air outlet base and the opening of the fan case.

5. The fan box assembly of claim 1, wherein, the case body comprises opposite front and rear side plates, opposite left and right side plates, and a top plate, the left side plate or the right side plate is provided with the outlet near the top plate, and the lower end opposite to the top plate forms an inlet of the fan case, and a smoke inlet cover is arranged at the inlet of the fan case.

6. The fan box assembly of claim 5, wherein, an oil guide plate is arranged between the air outlet base and the smoke inlet cover, the air outlet base is connected to the side plate through a connecting piece, and the oil guide plate is used to guide the oil seepage at the connecting piece into the fan case.

7. The fan box assembly of claim 6, wherein, the oil guide plate is fixed to the smoke inlet cover and / or the air outlet base.

8. The fan box assembly of claim 6, wherein, the oil guide plate is integrally formed with the smoke inlet cover and / or the air outlet base.

9. The fan box assembly of claim 7, wherein, the upper end of the oil guide plate is fixed to the air outlet base, the upper part of the smoke inlet cover is arranged outside the fan case, and the lower end of the oil guide plate is inserted into the gap between the smoke inlet cover and the fan case.

10. The fan box assembly of claim 9, wherein, the smoke inlet cover is provided with an oil leakage structure, and the oil flowing into the gap between the smoke inlet cover and the fan case can flow into the smoke inlet cover through the oil leakage structure.

11. The fan box assembly of claim 1, wherein, the case body comprises opposite front and rear side plates, opposite left and right side plates, and a top plate, the left side plate or the right side plate is provided with the outlet from top to bottom and inclined to the outside of the fan, the outlet is arranged on the inclined part of the left side plate or the right side plate, and the lower end opposite to the top plate forms an inlet of the fan case, and a smoke inlet cover is arranged at the inlet of the fan case.

12. The fan box assembly of claim 11, wherein, the lower edge of the air outlet base extends to the vertical part of the left side plate or the right side plate.

13. The fan box assembly of claim 12, wherein, an oil guide plate is arranged between the air outlet base and the smoke inlet cover, and the oil guide plate is arranged on the vertical part of the left side plate or the right side plate.

14. The fan box assembly of claim 1, wherein, the fan case has a first dimension along the left-right direction of 100-450 mm and a second dimension along the front-rear direction of 100-450 mm.

15. The fan box assembly of claim 1, wherein, the fan case has an inlet for guiding smoke, and the center line of the inlet of the fan case is perpendicular to the axis of the impeller of the fan.

16. A range hood characterized by the range hood comprises the fan case assembly according to any one of claims 1-15.

17. The range hood according to claim 16, wherein, The range hood further comprises a smoke pipe and a smoke collecting cavity, the fan box assembly, the smoke pipe and the smoke collecting cavity are arranged close to a vertical wall surface and are sequentially connected from top to bottom.

18. The range hood according to claim 17, characterized in that A center line of an impeller of a fan of the fan box assembly is perpendicular to the vertical wall surface, or an included angle between the center line of the impeller of the fan of the fan box assembly and the vertical wall surface is greater than or equal to 45° and less than 90°.

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