Range hood and fan box assembly

Abstract

The utility model discloses a range hood and a fan box assembly, the fan box assembly comprises a fan box and a smoke outlet seat, at least part of the fan box is used for being installed above a suspended ceiling, the fan box is provided with an inlet used for leading in smoke and an outlet used for leading out the smoke, and the outlet is located above the suspended ceiling; the fan box comprises a hollow fan box body, a fan is installed in the fan box body, the fan comprises a volute and an impeller arranged in the volute, and the volute is provided with an air outlet; the fan box comprises a side plate used for being provided with an outlet, the side plate extends in the vertical direction, the upper portion of the volute is close to or attached to a top plate of the adjacent fan box, and the plane of an air outlet of the volute is obliquely arranged relative to the vertical direction. And an air outlet of the volute is communicated with the smoke outlet seat through a connecting transition piece. According to the split type range hood, the air outlet of the volute is obliquely formed, and the connecting transition piece is arranged, so that the mounting position of the smoke outlet seat is improved, interference between the smoke outlet seat and a suspended ceiling is avoided, and the mounting adaptability of the split type range hood is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a range hood and fan box assembly. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. Their main function is to remove cooking fumes, thus maintaining a pleasant kitchen environment.

[0003] Common integrated range hoods have the following main drawbacks: the fan inevitably generates significant noise as it moves the fumes, resulting in a poor user experience while cooking. To overcome these issues, a split-type range hood has been proposed, achieving a certain degree of noise reduction.

[0004] A split-type range hood mainly consists of a separate smoke collection hood and a fan housing assembly. The fan housing assembly is usually partially installed in the ceiling.

[0005] like Figure 1 As shown, the inventors of this application discovered that when the volute 11 of the fan in the fan box assembly is installed in the fan box 1, the air outlet of the volute 11 is directly opposite to the side plate of the fan box 1, and a large height difference h1 is formed between the highest position of the air outlet of the volute 11 and the top plate 135 of the fan box 1.

[0006] Due to the aforementioned height difference h1, the smoke outlet mount is positioned too low when installed on the side panel of the fan housing 1, corresponding to the air outlet of the volute 11. This low installation position directly affects the adaptability of the fan housing 1 for ceiling-mounted installations. Especially in scenarios requiring ceiling-mounted installations, when the smoke outlet mount is too low, the ceiling height must be at least greater than the height from the top plate 135 of the fan housing 1 to the lowest point of the smoke outlet mount. If the ceiling height is insufficient, the fan housing assembly cannot be installed. Overall, the low installation position of the smoke outlet mount within the fan housing assembly becomes a bottleneck in the installation of the range hood. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a range hood and fan box assembly that improves the installation position of the smoke outlet seat, thereby avoiding interference between the smoke outlet seat and the ceiling and effectively improving the adaptability of the split-type range hood installation.

[0008] The specific technical solution of this utility model embodiment is as follows:

[0009] A fan housing assembly includes a fan housing and a smoke outlet base. The fan housing is at least partially mounted above a suspended ceiling. The fan housing has an inlet for introducing flue gas and an outlet for discharging flue gas, the outlet being located above the suspended ceiling. The fan housing includes a hollow fan housing for installing a fan. The fan includes a volute and an impeller disposed within the volute, the volute having an air outlet. The fan housing includes a side plate for providing the outlet, the side plate extending vertically. The upper part of the volute is close to or adjacent to the top plate of the fan housing, and the plane containing the air outlet of the volute is inclined relative to the vertical direction. The air outlet of the volute is connected to the smoke outlet base via a connecting transition member.

[0010] In a preferred embodiment, the connecting transition member has a hollow tubular structure, and the connecting transition member extends horizontally or first extends upwards and then horizontally.

[0011] In a preferred embodiment, the air outlet of the volute is flush with the outlet, and the connecting transition extends horizontally.

[0012] In a preferred embodiment, the air outlet of the volute is at least partially lower than the outlet, and the connecting transition extends upward first and then horizontally.

[0013] In a preferred embodiment, the connecting transition member has a first port communicating with the air outlet of the volute and a second port communicating with the smoke outlet seat. The plane of the first port is inclined to match the air outlet of the volute, and the plane of the second port extends in a vertical direction.

[0014] In a preferred embodiment, one end of the connecting transition member is sealed to the air outlet of the volute, and the other end of the connecting transition member is sealed to the side plate and / or the smoke outlet seat.

[0015] In a preferred embodiment, the smoke outlet is located on the outer or inner side of the side plate of the fan box.

[0016] In a preferred embodiment, the smoke outlet extends horizontally, upward, or downward in a direction away from the fan box.

[0017] In a preferred embodiment, the fan box is installed on or near the top wall, and the smoke outlet extends horizontally or downward in a direction away from the fan box.

[0018] In a preferred embodiment, the smoke outlet is installed on the outside of the side plate, and a flange is provided at the lower edge of the outlet to cover the gap between the smoke outlet and the side plate.

[0019] In a preferred embodiment, a flange is provided at the left and / or right and / or top edge of the outlet.

[0020] In a preferred embodiment, the fan box assembly further includes an air inlet hood through which flue gas can flow into the fan box, and the upper part of the air inlet hood covers part of the fan box.

[0021] In a preferred embodiment, the upper part of the air inlet hood covers part of the fan box and forms a gap with the fan box. The smoke outlet seat is installed on the side plate through a connector. An oil guide plate is provided between the smoke outlet seat and the air inlet hood. The oil guide plate is used to guide the oil at the connection between the smoke outlet seat and the side plate to the gap.

[0022] In a preferred embodiment, the oil guide plate is fixed to the air inlet hood and / or the smoke outlet seat.

[0023] In a preferred embodiment, the oil guide plate is integrally formed with the air inlet hood and / or the smoke outlet seat.

[0024] In a preferred embodiment, the upper end of the oil guide plate is fixed to the smoke outlet seat, the upper part of the air inlet hood covers the periphery of the fan box, and the lower end of the oil guide plate is inserted into the gap.

[0025] In a preferred embodiment, the air inlet shroud is provided with an oil leakage structure, so that the oil guided by the oil guide plate to the gap can flow into the air inlet shroud through the oil leakage structure.

[0026] In a preferred embodiment, the fan housing has a first dimension in the left-right direction between 100 mm and 450 mm, and a second dimension in the front-back direction between 100 mm and 450 mm.

[0027] In a preferred embodiment, the fan box has a fan box inlet for introducing flue gas, the centerline of the fan box inlet being perpendicular to the axis of the fan impeller.

[0028] A range hood, the range hood comprising: a fan box assembly as described in any of the preceding claims.

[0029] In a preferred embodiment, the range hood further includes a flue and a smoke collection chamber, wherein the fan box assembly, the flue, and the smoke collection chamber are arranged close to the vertical wall and connected sequentially from top to bottom.

[0030] In a preferred embodiment, the centerline of the impeller of the fan in the fan housing assembly is perpendicular to the vertical wall, or the angle between the centerline of the impeller of the fan in the fan housing assembly and the vertical wall is greater than or equal to 45° and less than 90°.

[0031] The technical solution of this utility model has the following significant beneficial effects:

[0032] In the embodiments of this application, by tilting the plane of the volute's air outlet relative to the vertical direction, the air outlet of the volute can be brought closer to the top plate of the fan box, thereby effectively reducing the height difference between the highest point of the air outlet of the volute and the top plate of the fan box. Furthermore, a connecting transition piece is provided at the air outlet of the volute, which connects the air outlet of the volute to the smoke outlet seat. Without significantly altering the structure of the fan box, the tilted structure of the volute's air outlet, in conjunction with the connecting transition piece, improves the installation position of the smoke outlet seat, thereby avoiding interference between the smoke outlet seat and the ceiling and effectively improving the adaptability of the split-type range hood installation.

[0033] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0034] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0035] Figure 1 This is a schematic diagram of the structure of a fan box assembly in the prior art;

[0036] Figure 2 This is a schematic diagram of the structure of a fan box assembly provided in the embodiments of this application;

[0037] Figure 3 for Figure 2 A magnified view of a portion of point I in the middle;

[0038] Figure 4 This is a structural schematic diagram of a connecting transition member in a fan box assembly provided in the embodiments of this application;

[0039] Figure 5 This is a front view of a connecting transition member in a fan box assembly provided in the embodiments of this application;

[0040] Figure 6 This is a schematic diagram of a fan box equipped with a smoke inlet hood provided in the embodiments of this application;

[0041] Figure 7 A schematic diagram of a fan box assembly with a smoke inlet hood provided in an embodiment of this application;

[0042] Figure 8 This is a schematic diagram of the structure of a smoke inlet hood in a fan box assembly provided in the embodiments of this application;

[0043] Figure 9 This is a schematic diagram of the structure of a range hood provided in the embodiments of this application.

[0044] Reference numerals in the figures of this application:

[0045] 1. Fan box;

[0046] 102. Export;

[0047] 103. Imports;

[0048] 11. Snail shell;

[0049] 111. Air vent;

[0050] 134. Side panels;

[0051] 1341. Flip the edge;

[0052] 135. Top slab;

[0053] 15. Oil guide plate;

[0054] 2. Smoke hood;

[0055] 26. Groove;

[0056] 27. Oil-leaking structure;

[0057] 3. Smoke pipe;

[0058] 4. Smoke collection chamber;

[0059] 5. Smoke outlet;

[0060] 6. Suspended ceiling;

[0061] 7. Ceiling and walls;

[0062] 8. Connecting transition parts;

[0063] 81. First port;

[0064] 82. Second port;

[0065] X, left and right directions;

[0066] Y, forward / backward direction;

[0067] Z, vertical direction. Detailed Implementation

[0068] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0069] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0070] 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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0071] This utility model provides a range hood and fan box assembly that can improve the installation position of the smoke outlet seat, thereby avoiding interference between the smoke outlet seat and the ceiling, and effectively improving the adaptability of the installation of split range hood.

[0072] Please refer to the following for comprehensive information. Figures 2 to 9This application specification provides a fan box assembly, which may include: a fan box 1 and a smoke outlet seat 5. The fan box 1 is at least partially used for installation above a suspended ceiling 6. The fan box 1 has an inlet 103 for introducing flue gas and an outlet 102 for discharging flue gas, the outlet 102 being located above the suspended ceiling 6. A fan is installed inside the fan box 1. The fan includes a volute 11 and an impeller disposed within the volute 11. The volute 11 has an air outlet 111. The fan box 1 includes a side plate 134 for distributing the outlet 102. The side plate 134 extends along the vertical direction Z. The upper part of the volute 11 is close to or adjacent to the top plate 135 of the fan box 1. The plane containing the air outlet 111 of the volute 11 is inclined relative to the vertical direction Z. The air outlet 111 of the volute 11 is connected to the smoke outlet seat 5 via a connecting transition member 8.

[0073] like Figure 2 , Figure 3 As shown, in this embodiment, the fan box assembly may mainly include a fan box 1 and a smoke outlet seat 5. The fan box 1 and the smoke outlet seat 5 can be assembled before leaving the factory, or they can be assembled after leaving the factory.

[0074] In this embodiment, the fan box 1 can be a hollow box structure. The fan box 1 has an inlet 103 for introducing flue gas and an outlet 102 for discharging flue gas, wherein the outlet 102 of the fan box 1 is located above the suspended ceiling 6. A fan is installed inside the fan box 1. Please refer to the reference [reference needed]. Figure 8 The range hood used in this fan box assembly can be a split-type range hood. At least a portion of the fan box 1 is installed above the ceiling 6. For the range hood, the fan in the fan box 1 is the main source of noise. When the fan box 1, which at least partially houses the fan, is installed above the ceiling 6, the fan is positioned away from the user side, which helps to reduce the impact of noise generated by the fan during operation on the user. In addition, when the fan is positioned away from the user, the distance from it to the stove where the fumes are generated is also relatively far, which effectively reduces the amount of fumes adsorbed on the impeller and volute 11 of the fan. That is, grease does not easily accumulate on the fan, thereby ensuring the reliability of the fan during operation and extending the service life of the fan.

[0075] In this embodiment, during the installation of the range hood, before installing the fan housing assembly into the ceiling 6, the smoke outlet seat 5 needs to be installed on the first side plate 134 of the fan housing 1, and then the entire assembly is installed into the ceiling 6 through the opening. During installation, the smoke outlet seat 5 needs to be installed above the ceiling 6. Since the smoke outlet seat 5 is located downstream of the air outlet 111 of the volute 11, it is used to receive the smoke flowing out of the air outlet 111 of the volute 11. The installation height of the smoke outlet seat 5 mainly depends on the height position of the air outlet 111 of the volute 11.

[0076] In this embodiment, the upper part of the volute 11 is close to or adjacent to the top plate 135 of the fan box 1. This arrangement allows the volute 11 to be positioned close to the top plate 135 of the fan box 1, thereby ensuring that the smoke outlet seat 5 has a relatively high installation height on the fan box 1.

[0077] Please refer to the following: Figure 2 and Figure 3 To further improve the installation position of the smoke outlet seat 5 on the fan box 1, in this embodiment, the plane containing the air outlet 111 of the volute 11 is tilted relative to the vertical direction, so that the air outlet 111 of the volute 11 can be closer to the top plate 135 of the fan box 1, thereby effectively reducing the height difference between the highest point of the air outlet 111 of the volute 11 and the top plate 135 of the fan box 1 (please compare). Figure 1 and Figure 2 The height difference between the air outlet 111 of the volute 11 and the top plate 135 of the fan box 1 is reduced from h1 to h2. A connecting transition piece 8 is provided at the air outlet 111 of the volute 11. The air outlet 111 of the volute 11 is connected to the smoke outlet seat 5 through the connecting transition piece 8. Without changing the structure of the fan box 1 too much, the inclined structure of the air outlet 111 of the volute 11 and the connecting transition piece 8 can improve the installation position of the smoke outlet seat 5, thereby avoiding interference between the smoke outlet seat 5 and the ceiling 6, and effectively improving the adaptability of the split range hood installation.

[0078] Please refer to the following: Figure 4 and Figure 5 In one embodiment, the connecting transition member 8 has a hollow tubular structure, and the connecting transition member 8 extends horizontally or first extends upwards and then horizontally.

[0079] In this embodiment, the connecting transition member 8 can be a hollow tube structure. The cross-sectional structure of the connecting transition member 8 can be adapted to the structure of the air outlet 111 of the volute 11, the outlet 102 of the fan box 1, and / or the outer contour of the smoke inlet of the smoke outlet seat 5. For example, when the air outlet 111 of the volute 11 is rectangular, the cross-section of the connecting transition member 8 at least at the position opposite to the air outlet 111 of the volute 11 is rectangular. When the contour of the outlet 102 of the fan box 1 is rectangular and / or the outer contour of the smoke inlet of the smoke outlet seat 5 is rectangular, the cross-section of the connecting transition member 8 at least at the position opposite to the outlet 102 of the fan box 1 and / or the smoke inlet of the smoke outlet seat 5 is rectangular.

[0080] The connecting transition piece 8 can extend horizontally as a whole. Using this connecting transition piece 8, the flue gas flowing out of the fan can be guided out of the smoke outlet 5 with low resistance, high airflow, and low noise, and then flow into the exhaust pipe through the smoke outlet 5 for external discharge. Furthermore, when the connecting transition piece 8 extends horizontally as a whole, the smoke outlet 5 can be flexibly configured according to actual needs. For example, the centerline of the smoke outlet 5 can be inclined downwards to ensure that the flue gas maintains its current inertial force and is efficiently discharged into the exhaust pipe.

[0081] In one specific embodiment, the air outlet 111 of the volute 11 is flush with the outlet 102, and the connecting transition member 8 extends in the horizontal direction.

[0082] When the air outlet 111 of the volute 11 is flush with or nearly flush with the outlet 102 on the side plate 134 of the fan box 1, the connecting transition member 8 extends horizontally. Specifically, the air outlet 111 of the volute 11 can be flush with the outlet 102 on the side plate 134 of the fan box 1. For example, when the cross-section of the air outlet 111 of the volute 11 is rectangular, the rectangle has opposing upper and lower sides, as well as opposing front and rear sides. The upper side of the air outlet 111 of the volute 11 can be flush with or nearly flush with the upper side of the outlet 102 of the fan box 1, and the lower side plate 134 of the air outlet 111 of the volute 11 can be flush with or nearly flush with the lower side plate 134 of the outlet 102 of the fan box 1. The projections of the front and rear sides of the air outlet 111 of the volute 11 toward the outlet 102 of the fan housing 1 are respectively flush with or nearly flush with the front and rear sides of the outlet 102 of the fan housing 1. This arrangement simplifies the structure of the connecting transition piece 8, makes it easier to manufacture, and improves assembly accuracy.

[0083] Alternatively, the connecting transition piece 8 can first extend upwards at an angle and then extend horizontally. When the connecting transition piece 8 extends upwards at an angle and then horizontally, the upwardly angled structure can further raise the position of the air outlet 111 of the volute 11 and further reduce h2. This allows the position of the outlet 102 of the fan box 1 on the side plate 134 to be raised in the height direction, so that the installation position of the smoke outlet seat 5 is set upwards. This reduces the installation height required for the smoke outlet seat 5 in the space above the ceiling 6, thereby enabling the fan box assembly to be flexibly installed in the limited space of the ceiling 6 and improving the adaptability of the split range hood installation.

[0084] In one specific embodiment, the air outlet 111 of the volute 11 is at least partially lower than the outlet 102, and the connecting transition member 8 first extends upward at an angle and then extends horizontally.

[0085] In this embodiment, the main difference from the above embodiment is that the air outlet 111 of the volute 11 is at least partially lower than the outlet 102 on the side plate 134 of the fan box 1. In order to smoothly connect the air outlet 111 of the volute 11 with the outlet 102 on the side plate 134 of the fan box 1, the connecting transition piece 8 can first extend upward and then extend horizontally. With this configuration, the air outlet height of the volute 111 can be raised, thereby raising the position of the outlet 102 on the side plate 134 and setting the installation position of the smoke outlet seat 5 upward. This reduces the installation height required for the smoke outlet seat 5 in the space above the ceiling 6, allowing for flexible installation of the fan box assembly within the limited space of the ceiling 6 and improving the adaptability of the split-type range hood installation.

[0086] Please refer to the following: Figure 2 , Figure 3 and Figure 5 In one embodiment, the connecting transition member 8 has a first port 81 communicating with the air outlet 111 of the volute 11 and a second port 82 communicating with the smoke outlet seat 5. The plane of the first port 81 is inclined to match the air outlet 111 of the volute 11, and the plane of the second port 82 extends along the vertical direction Z.

[0087] In this embodiment, the connecting transition member 8 may have a first port 81 and a second port 82, wherein the first port 81 is used to communicate with the air outlet 111 of the volute 11, and the second port 82 is used to communicate with the smoke outlet seat 5. To ensure the compatibility between the connecting transition member 8 and the air outlet 111 and smoke outlet seat 5 of the volute 11, the first port 81 opposite to the air outlet 111 of the volute 11 can be tilted, and the plane containing the second port 82 opposite to the air outlet 111 of the volute 11 can be extended along the vertical direction Z.

[0088] In one embodiment, one end of the connecting transition member 8 is sealed to the air outlet 111 of the volute 11, and the other end of the connecting transition member 8 is sealed to the side plate 134 and / or the smoke outlet seat 5.

[0089] To prevent fumes from escaping from the connection point between the connecting transition piece 8 and the air outlet 111 of the volute 11, the connecting transition piece 8 and the air outlet 111 of the volute 11 can be sealed together. This sealing connection can take the form of a flange connection, a snap-fit ​​connection with a sealing element, a threaded fastening with a sealing element, or other methods. It is not limited to the above descriptions. Those skilled in the art, inspired by the technical essence of this application, may make other modifications, but as long as the achieved function and effect are the same as or similar to that of this application, they should be covered within the scope of protection of this application.

[0090] Similarly, to prevent fumes from escaping from the connection point between the other end of the connecting transition piece 8 and the upper part of the side plate 134 of the fan box 1 and / or the mounting part of the smoke outlet seat 5, the other end of the connecting transition piece 8 can be sealed to the upper part of the side plate 134 of the fan box 1 and / or the mounting part of the smoke outlet seat 5. The specific form of this sealed connection can be referred to the above description, and will not be repeated here.

[0091] In one embodiment, the smoke outlet seat 5 is located on the outer or inner side of the side plate 134 of the fan box 1.

[0092] Specifically, the smoke outlet seat 5 has a mounting part for cooperating with the side plate 134 of the fan box 1 which is provided with the outlet 102. The mounting part can be located on the inner or outer side of the upper part of the side plate 134.

[0093] The specific form of the mounting part can be a flange ring whose outer contour matches the structure of the outlet 102 of the fan box 1. When the outlet 102 of the fan box 1 has a rectangular hole, the flange ring can be rectangular; when the outlet 102 of the fan box 1 has a circular hole, the flange ring can be circular. When the outlet 102 of the fan box 1 has other structures, the structure of the flange ring can be adapted accordingly. Specifically, this application does not impose a unique limitation on the specific structure of the mounting part.

[0094] For example, to achieve a fixed connection between the smoke outlet seat 5 and the fan housing 1, the flange ring can be provided with multiple fastening holes spaced apart circumferentially. The smoke outlet seat 5 and the fan housing 1 can be relatively fixed by installing fasteners in these fastening holes.

[0095] The plane where the installation part is located can be set parallel to the plane where the outlet 102 of the fan box 1 is located, thereby ensuring that the smoke outlet seat 5 can be tightly connected with the fan box 1, which is conducive to the smooth flow of flue gas at the connection point.

[0096] In one embodiment, the smoke outlet seat 5 extends horizontally, upward, or downward in a direction away from the fan box 1.

[0097] In this embodiment, the smoke outlet 5 can extend horizontally as a whole. Specifically, the smoke outlet 5 can include a tubular body with a center line that extends horizontally.

[0098] The smoke outlet seat 5 also includes a smoke inlet end and a smoke outlet end. The smoke inlet end is used to connect to the fan box 1, and the smoke outlet end is used to connect to the exhaust pipe. The specific structure of the smoke outlet end can be adapted to the structure of the connecting end of the exhaust pipe it is assembled with. For example, the smoke outlet end of the smoke outlet seat 5 can be set vertically or inclined.

[0099] The specific structure of the flue gas inlet end of the smoke outlet seat 5 can be adapted to the structure of the side plate 134 of the fan box 1 to which it is assembled. For example, when the side plate 134 of the fan box 1 used to set the smoke outlet seat 5 extends along the vertical direction Z, the flue gas inlet end of the smoke outlet seat 5 can also extend along the vertical direction Z.

[0100] The top tangent of the air outlet 111 of the volute 11 of the fan extends horizontally. When the smoke outlet seat 5 extends horizontally as a whole, and the flue gas inlet 103 of the smoke outlet seat 5 is arranged parallel to the side plate 134 of the fan box 1, the flue gas flowing out of the fan can flow into the exhaust pipe through the smoke outlet seat 5 with low resistance, large air volume, and low noise, and then be discharged outward. In addition, when the smoke outlet seat 5 extends horizontally as a whole, the installation space required when it is matched with the exhaust pipe is minimized.

[0101] Alternatively, the smoke outlet seat 5 extends upward in a direction away from the fan box 1, and the smoke outlet seat 5 has a smoke inlet end and a smoke outlet end. The smoke outlet end is vertically or inclined, and the smoke inlet end is inclined from bottom to top in a direction away from the smoke outlet end.

[0102] In this embodiment, the main difference from the above embodiment is that the smoke outlet seat 5 extends upwards as a whole. For the smoke outlet seat 5 and the smoke exhaust pipe, some interference problems may be encountered during installation (such as the presence of a beam on the top wall 7), or the opening position for the smoke exhaust pipe may be too high. In this case, the smoke outlet seat 5 may need to extend upwards as a whole to overcome the above interference problems and / or installation docking problems.

[0103] As for the smoke outlet seat 5, when it extends upward as a whole, it is beneficial for the oil separated from the flue gas to flow back to the fan box 1 under the action of gravity through the smoke outlet seat 5.

[0104] Or, such as Figure 2 As shown, the smoke outlet seat 5 extends downward in a direction away from the fan box 1. The smoke outlet seat 5 has a smoke inlet end and a smoke outlet end. The smoke outlet end is vertically or inclined. The smoke inlet end is inclined from bottom to top in a direction away from the smoke outlet end.

[0105] In this embodiment, the main difference from the above embodiment is that the smoke outlet seat 5 extends downwards as a whole. For the smoke outlet seat 5 and the smoke exhaust pipe, some interference problems may be encountered during installation (e.g., a beam is installed on the top wall 7), or the opening for the smoke exhaust pipe may be too low. In such cases, the smoke outlet seat 5 may need to extend downwards as a whole to overcome the aforementioned interference problems and / or installation connection problems.

[0106] Overall, for the fan, the flue gas flowing out of the outlet 111 of the volute 11 is affected by the structure of the volute 11 itself and the inertial force, and generally has a downward inclined flow trend. When the smoke outlet seat 5 extends downward as a whole, it is most conducive to the flue gas flowing out of the fan flowing into the exhaust pipe with the lowest resistance, the largest air volume, and the lowest noise, and then being discharged outward.

[0107] In one embodiment, the fan box 1 is installed on or near the top wall 7, and the smoke outlet seat 5 extends horizontally or downward in a direction away from the fan box 1.

[0108] In this embodiment, the fan box 1 is specifically installed on the ceiling wall 7, that is, the top of the fan box 1 is fixed to the ceiling wall 7, or the fan box 1 is set close to the ceiling wall 7, that is, the top of the fan box 1 is within a small distance from the ceiling wall 7. When the fan box 1 is directly installed on or close to the ceiling wall 7, it is beneficial to realize the split installation of the range hood, and the height requirement of the ceiling 6 is lower. Even when the ceiling 6 is low, the range hood in this embodiment can still realize the split installation, and the smoke outlet seat 5 can also be located above the ceiling 6.

[0109] When the fan box 1 is installed on or near the top wall 7, the outlet 102 of the fan box 1 can be set relatively high, specifically near the top wall 7. In this way, when the smoke outlet seat 5 extends horizontally or downward in a direction away from the fan box 1, it is beneficial to reasonably install the smoke outlet seat 5 and the exhaust pipe connected to the smoke outlet seat 5 above the ceiling 6.

[0110] like Figure 6As shown, in one embodiment, the smoke outlet seat 5 is installed on the outside of the side plate 134, and a flange 1341 is provided at the lower edge of the outlet 102. The flange 1341 is used to cover the gap between the smoke outlet seat 5 and the side plate 134.

[0111] In this embodiment, the side plate 134 of the fan box 1 and the smoke outlet seat 5 have a certain fitting gap at the connection position. In order to prevent oil from seeping out through the fitting gap between the side plate 134 of the fan box 1 and the smoke outlet seat 5, the side plate 134 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 1. The flange 1341 covers the fitting gap between the smoke outlet seat 5 and the side plate 134 of the fan box 1, thereby guiding the oil away from the fitting gap between the smoke outlet seat 5 and the side plate 134 of the fan box 1 through the flange 1341, and preventing the oil from seeping out from the fitting gap between the two.

[0112] The flange 1341 at least covers the lower edge of the outlet 102 of the fan box 1. Specifically, the specific value of the ratio of the arc length of the flange 1341 to the circumference of the outlet 102 of the fan box 1 is not specifically limited here. At least it ensures that when a small amount of oil flows through the connection position between the side plate 134 and the smoke outlet seat 5 under the action of gravity, it can no longer seep out through the fit gap, which effectively improves the oil seepage prevention performance of the range hood, solves the problem of difficult maintenance and cleaning caused by oil seepage, and thus significantly improves the user experience.

[0113] It should be noted that, in this embodiment, it is not ruled out that a seal may be installed between the side plate 134 of the fan box 1 with outlet 102 and the smoke outlet seat 5 to reduce the risk of oil leakage. However, seals are usually consumable parts, and after a period of use, they may become loose, still failing to completely solve the oil leakage problem between the side plate 134 and the smoke outlet seat 5. Furthermore, if a metal-to-metal hard contact seal is used, it can only reduce the fitting clearance, but cannot completely eliminate the fitting clearance, thus failing to fundamentally solve the oil leakage problem between the side plate 134 and the smoke outlet seat 5.

[0114] In this embodiment of the application, by providing a flange 1341 at least at the lower edge of the outlet 102 position of the side plate 134, the flange 1341 is used to cover the fitting gap between the smoke outlet seat 5 and the side plate 134, thus cleverly and thoroughly solving the problem of oil leakage between the side plate 134 and the smoke outlet seat 5.

[0115] like Figure 6 As shown, a flange 1341 is provided at the left edge and / or right edge and / or upper edge of the outlet 102 of the fan box 1.

[0116] In this embodiment, in addition to providing a flange 1341 at the lower edge of the outlet 102 of the fan box 1, at least one of the other edges of the outlet 102 of the fan box 1 may also be provided with flanges 1341. Specifically, flanges 1341 are provided circumferentially on all edges of the outlet 102 of the fan box 1. When a full circle of flanges 1341 is provided on the edge of the outlet 102 of the fan box 1 in the circumferential direction, it can reliably prevent oil from seeping out from the gap between the two parts. At the same time, the manufacturing process is relatively simple, only requiring the side plate 134 at the outlet 102 of the fan box 1 to be flanged 1341 as a whole.

[0117] like Figure 6 and Figure 7 As shown, in one embodiment, the fan box assembly may further include an air inlet hood through which flue gas can flow into the fan box 1, and the upper part of the air inlet hood covers part of the fan box 1.

[0118] In this embodiment, the fan box 1 may have an inlet 103 for introducing flue gas and an outlet 102 for discharging flue gas outward.

[0119] A fume hood 2 is installed at the inlet 103 of the fan box 1. The fume hood 2 is sealed to the fan box 1, allowing flue gas to flow into the fan box 1 through the fume hood 2. Specifically, the relative positional relationship between the fume hood 2 and the fan box 1 can be such that the upper part of the fume hood 2 covers the outer side of the fan box 1. When the upper part of the fume hood 2 covers part of the fan box 1, the height of the side plate 134 of the fan box 1 can be appropriately reduced. This is especially beneficial when the fume hood 2 is made of low-cost materials such as plastic, while the fan box 1 is made of relatively high-cost sheet metal, which helps to reduce the cost of the range hood.

[0120] In the embodiments and accompanying drawings of this application, the embodiment in which the upper part of the smoke inlet hood 2 is covered on the outside of the fan box 1 is mainly described in detail. Other embodiments can be adapted by referring to this typical embodiment, and will not be described in detail here.

[0121] In this embodiment, the upper part of the smoke inlet hood 2 covers the outside of the fan box 1, and the upper part of the smoke inlet hood 2 covers part of the fan box 1 and forms a gap with the fan box 1.

[0122] The smoke outlet 5 can be connected to the periphery of the outlet 102 of the side plate 134 via a connector. Specifically, the connector can be a fastener that fixes the smoke outlet 5 to the side plate 134, such as a threaded fastener, which can be in the form of a bolt.

[0123] There is a certain risk of oil leakage at the location where the connecting parts are installed between the smoke outlet seat 5 and the side plate 134. Oil may leak out through the mating points between the connecting parts and the side plate 134 and the smoke outlet seat 5. Figure 6 As shown, in order to guide any oil that may seep from the connection point into the gap between the fan housing 1 and the smoke inlet hood 2, an oil guide plate 15 can be provided between the smoke outlet seat 5 and the smoke inlet hood 2. This oil guide plate 15 can guide the oil at the connection between the smoke outlet seat 5 and the side plate 134 into the gap. Specifically, the oil guide plate 15 is at least partially located at the lower part of the smoke outlet seat 5, thereby catching the oil that seeps downward from the connection point.

[0124] like Figure 7 As shown, in one embodiment, the oil guide plate 15 is fixed on the smoke inlet hood 2 and / or the smoke outlet seat 5.

[0125] In this 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 smoke outlet seat 5, or the upper part of the oil guide plate 15 can be fixed to the smoke outlet seat 5 and the lower part of the oil guide plate 15 can be fixed to the smoke inlet hood 2. The oil guide plate 15 can be fixedly connected to the smoke inlet hood 2 and / or the smoke outlet seat 5 by means of fasteners, by forming a snap-fit ​​mechanism, or by other means; this application does not impose specific limitations on this method.

[0126] Alternatively, in another embodiment, the oil guide plate 15 is integrally formed with the smoke inlet hood 2 and / or the smoke outlet seat 5.

[0127] In this embodiment, the oil guide plate 15 can be integrally formed with the smoke inlet hood 2, or the oil guide plate 15 can be integrally formed with the smoke outlet seat 5, or the oil guide plate 15 can be integrally formed with both the smoke inlet hood 2 and the smoke outlet seat 5. When the oil guide plate 15 is integrally formed with the smoke inlet hood 2 and / or the smoke 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 smoke inlet hood 2 and / or the smoke outlet seat 5 at the mating position.

[0128] In one specific embodiment, the upper end of the oil guide plate 15 is fixed on the smoke 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.

[0129] 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 134, 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 134. 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.

[0130] The upper end of the oil guide plate 15 can be fixed to the smoke 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 smoke outlet seat 5. Of course, the method of fixing the upper end of the oil guide plate 15 to the smoke 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.

[0131] like Figure 8 As shown, in one embodiment, the air inlet shroud is provided with an oil leakage structure 27, through which oil guided by the oil guide plate 15 into the gap can flow into the air inlet shroud.

[0132] 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.

[0133] 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.

[0134] In this embodiment, the groove 26 has a bottom, an inner groove wall located inside the bottom, and an outer groove wall located outside the bottom. The outer groove wall is the cover wall of the smoke inlet hood 2. An oil leakage structure 27 may be provided on the inner groove wall. Specifically, the oil leakage structure 27 may be at least one slot or opening provided on the inner groove wall.

[0135] When a gap forms between the inner wall of the fume hood 2 and the fan housing 1, the oil on the inner wall of the fan housing 1 flows to the sealing structure and then into the gap between the inner wall of the groove 26 and the fan housing 1. Because the inner wall has a certain height, the oil accumulates in this gap. Prolonged contact between the accumulated oil and the sealing structure not only affects its sealing performance but also makes it prone to leakage during disassembly. Furthermore, it increases the difficulty of cleaning this area.

[0136] In this embodiment, by setting an oil leakage structure 27 on the inner wall of the groove 26, the oil can be efficiently and quickly discharged downwards, thereby preventing the oil from accumulating in the gap between the groove 26 and the fan box 1. This allows the sealed structure to be immersed in oil for a long time without oil leakage during disassembly. In addition, it does not increase the difficulty of cleaning this structure.

[0137] To ensure that the fan housing 1 can be installed in a typical household cabinet, the fan housing 1 has a first dimension along the left-right direction (X) between 100 mm and 450 mm, and a second dimension along the front-back direction (Y) between 100 mm and 450 mm. Taking vertical installation as an example, when the air inlet of the fan housing 11 is arranged facing the front and back sides, the first dimension can be a relative length dimension, and the second dimension can be a relative width dimension. Generally, based on the structure of the housing 11, the length dimension is greater than the width dimension. When the air inlet of the fan housing 11 is arranged facing the left-right direction, the first dimension can be a relative width dimension, and the second dimension can be a relative length dimension. In the embodiments and drawings of this application, the example of the fan housing 11 having its air inlet facing the front and back sides is mainly used for illustration.

[0138] This application also provides a range hood, which includes the above-mentioned fan box assembly. By setting the fan box assembly, the range hood can achieve the technical effects achieved by the fan box assembly implementation. For details, please refer to the specific description of the above implementation, which will not be repeated here.

[0139] In one embodiment, the range hood may further include a flue 3 and a smoke collection chamber 4, wherein the fan box assembly, the flue 3 and the smoke collection chamber 4 are arranged close to the vertical wall and connected sequentially from top to bottom.

[0140] In this embodiment, the range hood may include a fan housing assembly, a flue 3, and a smoke collection chamber 4. The smoke collection chamber 4, flue 3, and fan housing assembly can be arranged sequentially along the direction of smoke flow. Specifically, the smoke inlet hood 2, flue 3, and fan housing assembly can be vertically arranged against the wall from bottom to top. The smoke inlet hood 2 is positioned relatively close to the user's cooking area to collect the smoke generated during cooking. The fan housing assembly includes a fan housing 1 and a fan installed within it. When activated, the fan generates suction to draw out the smoke. The fan housing 1 is positioned relatively away from the user's cooking area.

[0141] In a preferred embodiment, the centerline of the impeller of the fan in the fan housing assembly is perpendicular to the vertical wall, or the angle between the centerline of the impeller of the fan in the fan housing assembly and the vertical wall is greater than or equal to 45° and less than 90°.

[0142] In this embodiment, the centerline of the fan impeller is perpendicular to the vertical wall, or the angle between the centerline of the fan impeller in the fan housing assembly and the vertical wall is greater than or equal to 45° and less than 90°. Specifically, this means that the fan is installed vertically. When the fan is installed vertically, the centerline of the impeller can be horizontal or inclined at a small angle relative to the horizontal plane. When the centerline of the impeller is inclined at a small angle relative to the horizontal plane, the angle between the centerline of the impeller and the horizontal plane is within 45°.

[0143] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0144] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0145] The above are merely a few embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A fan housing assembly, characterized in that, The fan box assembly includes a fan box and a smoke outlet base. The fan box is at least partially used for installation above the suspended ceiling. The fan box has an inlet for introducing flue gas and an outlet for discharging flue gas, the outlet being located above the suspended ceiling; The fan box is used to install a fan. The fan includes a volute and an impeller disposed inside the volute. The volute has an air outlet. The fan box includes a side plate for setting the outlet, the side plate extends in a vertical direction, the upper part of the volute is close to or adjacent to the top plate of the fan box, and the plane where the air outlet of the volute is located is inclined relative to the vertical direction. The air outlet of the volute is connected to the smoke outlet seat via a connecting transition piece.

2. The fan housing assembly according to claim 1, characterized in that, The connecting transition member includes a tube structure, which extends horizontally or first extends upwards and then horizontally.

3. The fan housing assembly according to claim 2, characterized in that, The air outlet of the volute is flush with the outlet, and the connecting transition piece extends horizontally.

4. The fan housing assembly according to claim 2, characterized in that, The air outlet of the volute is at least partially lower than the outlet, and the connecting transition member first extends upward and then extends horizontally.

5. The fan housing assembly according to claim 1, characterized in that, The connecting transition member has a first port communicating with the air outlet of the volute and a second port communicating with the smoke outlet seat. The plane of the first port is inclined to match the air outlet of the volute, and the plane of the second port extends in the vertical direction.

6. The fan housing assembly according to claim 1, characterized in that, One end of the connecting transition piece is sealed to the air outlet of the volute, and the other end of the connecting transition piece is sealed to the side plate and / or the smoke outlet seat.

7. The fan housing assembly according to claim 1 or 6, characterized in that, The smoke outlet seat is located on the outside or inside of the side plate of the fan box.

8. The fan housing assembly according to claim 7, characterized in that, The smoke outlet extends horizontally, upwards, or downwards in a direction away from the fan box.

9. The fan housing assembly according to claim 8, characterized in that, The fan box is installed on or near the top wall, and the smoke outlet extends horizontally or downwards in a direction away from the fan box.

10. The fan housing assembly according to claim 8, characterized in that, The smoke outlet is installed on the outside of the side plate, and a flange is provided at the lower edge of the outlet to cover the gap between the smoke outlet and the side plate.

11. The fan housing assembly according to claim 10, characterized in that, A flange is provided at the left and / or right and / or top edge of the outlet.

12. The fan housing assembly according to claim 1, characterized in that, The fan box assembly also includes an air inlet hood, through which flue gas can flow into the fan box, and the upper part of the air inlet hood covers part of the fan box.

13. The fan housing assembly according to claim 12, characterized in that, The upper part of the air inlet hood covers part of the fan box and forms a gap with the fan box. The smoke outlet seat is installed on the side plate through a connector. An oil guide plate is provided between the smoke outlet seat and the air inlet hood. The oil guide plate is used to guide the oil at the connection between the smoke outlet seat and the side plate to the gap.

14. The fan housing assembly according to claim 13, characterized in that, The oil guide plate is fixed on the air inlet hood and / or the smoke outlet seat.

15. The fan housing assembly according to claim 13, characterized in that, The oil guide plate is integrally formed with the air inlet hood and / or the smoke outlet seat.

16. The fan housing assembly according to claim 14, characterized in that, The upper end of the oil guide plate is fixed on the smoke outlet seat, the upper part of the air inlet hood covers the periphery of the fan box, and the lower end of the oil guide plate is inserted into the gap.

17. The fan housing assembly according to claim 16, characterized in that, The air inlet shroud is equipped with an oil leakage structure, which allows oil guided by the oil guide plate to flow into the air inlet shroud through the oil leakage structure.

18. The fan housing assembly according to claim 1, characterized in that, The fan box has a first dimension in the left-right direction between 100 mm and 450 mm, and a second dimension in the front-back direction between 100 mm and 450 mm.

19. The fan housing assembly according to claim 1, characterized in that, The fan box has an inlet for introducing flue gas, and the centerline of the inlet is perpendicular to the axis of the impeller of the fan.

20. A range hood, characterized in that, The range hood includes: a fan box assembly as described in any one of claims 1 to 19.

21. The range hood according to claim 20, characterized in that, The range hood also includes a flue and a smoke collection chamber. The fan box assembly, the flue, and the smoke collection chamber are arranged close to the vertical wall and connected sequentially from top to bottom.

22. The range hood according to claim 21, characterized in that, The centerline of the impeller of the fan in the fan box assembly is perpendicular to the vertical wall, or the angle between the centerline of the impeller of the fan in the fan box assembly and the vertical wall is greater than or equal to 45° and less than 90°.

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