Fan-assisted extractor device

Abstract

The utility model discloses fan external type fume machine device, include: the fume machine main part and fan device of split setting, fume machine main part includes fume machine shell, the inside of fume machine shell is equipped with suction cavity, the bottom of fume machine shell is equipped with the opening downward and with the intercommunication of suction cavity's fume collection cavity, the top of fume machine shell is equipped with first exhaust pipe, fan device includes mounting support and the wind cavity shell of being located mounting support, and mounting support is used for fixing in the one side of outer wall or public fume pipe, the first fan is equipped in wind cavity shell, and wind cavity shell is equipped with the fume inlet of the air inlet side of first fan with first exhaust pipe intercommunication and with the fume outlet of the air outlet side of first fan with outside or public fume pipe intercommunication. Fan external type fume machine device will fume machine main part and fan device split setting, will fan device set in the vicinity of outer wall or public pipeline to can reduce the volume of fume machine main part, be favorable to reduce the occupation to kitchen space, reduce the noise to promote the comfort of kitchen environment.

Description

Technical Field

[0001] This utility model relates to an externally mounted smoke hood device. Background Technology

[0002] Currently, most household range hoods adopt an integrated design of the fan system and the main body. This type of range hood occupies a large amount of kitchen space, resulting in a bulky main body that is inconvenient for users during cooking. Moreover, the high-speed motor and impeller of the fan system are located in the operating area near the user's head, generating significant noise that seriously affects the comfort of the kitchen environment and the user's health.

[0003] Furthermore, integrated range hoods require relatively long internal ducts and pipes to expel cooking fumes outdoors. During the process of increasing airflow, duct resistance and turbulent losses within the unit increase significantly. To achieve the nominal airflow and pressure, a more powerful motor is needed, which not only increases energy consumption and noise but also results in relatively lower efficiency.

[0004] All-in-one units limit the feasibility of installation in special kitchen layouts or scenarios with extreme space requirements. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an externally mounted range hood device, in which the main body of the range hood and the fan device are set separately, and the fan device is set on the external wall or public pipeline, which helps to reduce the occupation of kitchen space, reduce noise and improve the comfort of the kitchen environment.

[0006] An externally mounted smoke hood device according to an embodiment of the present utility model includes: a smoke hood body and a fan device separately disposed therefrom. The smoke hood body includes a smoke hood shell, an air intake chamber is provided inside the smoke hood shell, a smoke collection chamber with an opening facing downward and communicating with the air intake chamber is provided at the bottom of the smoke hood shell, and a first exhaust pipe is provided at the top of the smoke hood shell. The fan device includes a mounting bracket and a vent shell disposed on the mounting bracket. The mounting bracket is used to fix it to one side of an external wall or a public smoke pipe. A first fan is disposed inside the vent shell. The vent shell has a smoke inlet that connects the air intake side of the first fan to the first exhaust pipe and a smoke outlet that connects the exhaust side of the first fan to the outside or a public smoke pipe.

[0007] The externally mounted fan smoke hood device according to the embodiments of the present utility model has at least the following beneficial effects:

[0008] The above-mentioned external fan-type range hood devices separate the main body of the range hood from the fan unit, placing the fan unit on the exterior wall or near public pipes. This reduces the size of the main body of the range hood, which helps to reduce the space occupied in the kitchen and also reduces noise to improve the comfort of the kitchen environment.

[0009] In some embodiments of this utility model, the outer casing of the smoke hood is provided with a second fan that drives the airflow to flow sequentially through the smoke collection chamber, the air intake chamber and the first exhaust pipe. The volume of the second fan is smaller than that of the first fan, and the power of the second fan is smaller than that of the first fan.

[0010] In some embodiments of this utility model, the dimensions of the range hood housing along the front-to-back direction are consistent with the dimensions of the second fan along the front-to-back direction. The second fan is electrically connected to an electrical control box located on its left or right side. The upper left and upper right corners of the range hood housing are provided with guide slopes that are inclined toward the middle position.

[0011] In some embodiments of this utility model, the air chamber shell is cylindrical, the smoke inlet is located at one end of the air chamber shell, the smoke outlet is arranged around the outer peripheral wall of the air chamber shell, and the other end of the air chamber shell is provided with a baffle to guide the airflow outward from the smoke outlet.

[0012] In some embodiments of this utility model, the first fan includes a rotating impeller rotatably disposed within the air chamber shell and a motor driving the rotating impeller to rotate. The motor is mounted on a mounting plate fixed to the inner side of the baffle. The rotating impeller includes a funnel-shaped guide tube with its smaller end facing the smoke inlet, a guide plate disposed opposite to the larger end of the guide tube, and multiple spiral blades connected between the guide tube and the guide plate. When the rotating impeller rotates, it drives the airflow from between the spiral blades to the smoke outlet.

[0013] In some embodiments of this utility model, a filter assembly is detachably installed in the smoke collection chamber, and a guide plate is provided at the opening of the smoke collection chamber below the filter assembly. The guide plate can be rotated to an inclined state to expose the filter assembly, or the guide plate can be rotated to a horizontal state to form an air intake gap.

[0014] In some embodiments of this utility model, the left and right ends of the rear edge of the guide plate are pivotally connected to the outer casing of the range hood, the front edge of the guide plate is fixed to the outer casing of the range hood by a magnetic suction assembly, the bottom of the range hood has an installation port that connects the air intake chamber and the smoke collection chamber, the inner circumferential contour of the installation port matches the outer contour of the filter assembly, and the opposite sides of the filter assembly are installed in the installation port by an elastic snap fastener assembly.

[0015] In some embodiments of this utility model, the left and right sides of the range hood housing are provided with elastic release members. The elastic release members include a fixed part provided on the range hood housing, an inclined plate part connected to the fixed part and inclined away from the range hood housing, and a flat plate part connected to the lower end of the inclined plate part. The range hood housing is provided with a notch part for the flat plate part to extend and retract.

[0016] In some embodiments of this utility model, the left and right sides of the range hood housing are both recessed and provided with at least two recessed sections arranged at intervals along the front-back direction. The range hood housing is provided with a drive rod that passes through the recessed section in the vertical direction. The drive rod is provided with a mounting support member. The mounting support member can rotate around the axial direction of the drive rod to be housed in the recessed section or extend out of the recessed section.

[0017] In some embodiments of this utility model, the drive rod is only rotatable relative to the smoke machine housing, the drive rod is provided with an external thread, and the mounting support is provided with a nut that mates with the external thread.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the externally mounted fan-type smoke hood device of this utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the main body of the range hood in the embodiment;

[0022] Figure 3 for Figure 2 A cross-sectional schematic diagram;

[0023] Figure 4 for Figure 1 A cross-sectional schematic diagram of the fan unit in the embodiment.

[0024] Figure label:

[0025] The range hood body is 100; the range hood shell is 110; the settling tank is 111; the air intake chamber is 120; the smoke collection chamber is 130; the first exhaust pipe is 140; the second fan is 150; the electrical control box is 160; the guide slope is 170; the fan device is 200; the mounting bracket is 210; the air chamber shell is 220; the first fan is 230; the rotating impeller is 231; the motor is 232; the guide tube is 233; the guide plate is 234; the spiral blade is 235; the smoke inlet is 240; the smoke outlet is 250; the baffle is 260; the filter assembly is 300; the guide plate is 400; the elastic limiting component is 500; the fixing part is 510; the inclined plate part is 520; the flat plate part is 530; the drive rod is 610; the hanging support part is 620; and the nut part is 630. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] See Figures 1 to 4 The present invention relates to an externally mounted smoke hood device, comprising: a separate smoke hood body 100 and a fan device 200. The smoke hood body 100 includes a smoke hood shell 110, an air intake chamber 120 inside the smoke hood shell 110, a smoke collection chamber 130 with an opening facing downward and communicating with the air intake chamber 120 at the bottom of the smoke hood shell 110, and a first exhaust pipe 140 at the top of the smoke hood shell 110. The fan device 200 includes a mounting bracket 210 and a wind chamber shell 220 disposed on the mounting bracket 210. The mounting bracket 210 is used to fix to one side of an external wall or a public smoke pipe. A first fan 230 is disposed inside the wind chamber shell 220. The wind chamber shell 220 has a smoke inlet 240 that connects the air intake side of the first fan 230 to the first exhaust pipe 140 and a smoke outlet 250 that connects the exhaust side of the first fan 230 to the outside or a public smoke pipe.

[0031] The above-mentioned external fan-type range hood device separates the range hood body 100 and the fan device 200, and places the fan device 200 on the exterior wall or near the public pipeline, thereby reducing the size of the range hood body 100, which helps to reduce the space occupied in the kitchen, and can also reduce noise to improve the comfort of the kitchen environment.

[0032] See Figure 2 and Figure 3 In some embodiments of this utility model, the range hood housing 110 is equipped with a second fan 150 that drives airflow sequentially through the smoke collection chamber 130, the air intake chamber 120, and the first exhaust pipe 140. The volume of the second fan 150 is smaller than that of the first fan 230, and the power of the second fan 150 is also smaller than that of the first fan 230. It is understood that when the pipe distance between the range hood body 100 and the fan device 200 is relatively long, adding the second fan 150 can increase the suction power for the initial oil fumes. The second fan 150 is used as an auxiliary absorber of oil fumes, and its operating noise is much lower than that of ordinary range hoods. Correspondingly, the volume of the second fan 150 is also smaller, and it will not significantly increase the space occupied by the range hood body 100 in the kitchen.

[0033] See Figure 3 In some embodiments of this utility model, in order to minimize the size of the main body 100 of the range hood in the front-to-back direction, the size of the outer shell 110 of the range hood in the front-to-back direction is consistent with the size of the second fan 150 in the front-to-back direction. The second fan 150 is electrically connected to an electrical control box 160 located on its left or right side. The upper left and upper right corners of the outer shell 110 of the range hood are provided with guide slopes 170 inclined towards the middle position. The two guide slopes 170 can guide the oil fumes sucked into the suction chamber 120 to be discharged towards the first exhaust pipe 140.

[0034] See Figure 4 In some embodiments of this utility model, the air chamber shell 220 is cylindrical, the smoke inlet 240 is located at one end of the air chamber shell 220, the smoke outlet 250 is arranged around the outer peripheral wall of the air chamber shell 220, and the other end of the air chamber shell 220 is provided with a baffle 260 to guide the airflow outward from the smoke outlet 250. It should be noted that when the fan device 200 is installed on the exterior wall, the oil fumes enter from one end of the air chamber shell 220 under the suction of the first fan 230, and then diffuse outward from the outer peripheral wall of the air chamber shell 220. Compared with the direct blowing of oil fumes, the airflow is dispersed to a larger outlet area for discharge, the single-point flow velocity is relatively low, which greatly reduces the generation of turbulence and aerodynamic noise, making the operation quieter, and also facilitating the separation of large oil droplets from the gas phase.

[0035] See Figure 4 In some embodiments of this utility model, the first fan 230 includes a rotating impeller 231 rotatably disposed within the air chamber shell 220 and a motor 232 driving the rotating impeller 231 to rotate. The motor 232 is mounted on a mounting plate fixed to the inner side of the baffle 260. The rotating impeller 231 includes a funnel-shaped guide tube 233 with its smaller end facing the smoke inlet 240, a guide plate 234 disposed opposite to the larger end of the guide tube 233, and multiple spiral blades 235 connected between the guide tube 233 and the guide plate 234. When the rotating impeller 231 rotates, it drives the airflow from between the spiral blades 235 to the smoke outlet 250. It can be understood that after the fumes enter from the smaller end of the guide tube 233, they diffuse towards the larger end of the guide tube 233. Under the limiting effect of the guide plate 234 and the driving force of the spiral blades 235, they flow radially outward towards the smoke outlet 250, which helps the airflow to diffuse rapidly. In this embodiment, the outer peripheral wall of the air chamber shell 220 is provided with multiple through holes to form a grid shape, thereby forming the smoke exhaust port 250.

[0036] See Figure 3 In some embodiments of this utility model, in order to reduce the pollution of the atmosphere by oil fume emissions, a filter assembly 300 is detachably installed in the smoke collection chamber 130. In order to facilitate the cleaning or replacement of the filter assembly 300, a guide plate 400 is provided at the opening of the smoke collection chamber 130, and the filter assembly 300 is rotatably disposed below it. The guide plate 400 can be rotated to an inclined state to expose the filter assembly 300, or the guide plate 400 can be rotated to a horizontal state to form an air intake gap.

[0037] In some embodiments of this utility model, the left and right ends of the rear edge of the guide plate 400 are pivotally connected to the range hood housing 110. The front edge of the guide plate 400 is fixed to the range hood housing 110 by a magnetic assemblies. The bottom of the range hood housing 110 has an installation port that connects the air intake chamber 120 and the smoke collection chamber 130. The inner circumferential contour of the installation port matches the outer contour of the filter assembly 300. The opposite sides of the filter assembly 300 are installed in the installation port by elastic snap-fit ​​assemblies. The above structure makes it very convenient for the guide plate 400 to rotate open and close, and the filter assembly 300 to be disassembled and replaced. The elastic snap-fit ​​assemblies are made of plastic or metal. The elastic snap-fit ​​assemblies are existing technologies that are easily known to those skilled in the art and will not be described further here.

[0038] See Figure 1 and Figure 2 In some embodiments of this utility model, the left and right side walls of the range hood housing 110 are provided with elastic release members 500. The elastic release member 500 includes a fixing part 510 provided in the range hood housing 110, an inclined plate part 520 connected to the fixing part 510 and inclined away from the range hood housing 110, and a flat plate part 530 connected to the lower end of the inclined plate part 520. The range hood housing 110 is provided with a notch for the flat plate part 530 to extend and retract. It should be noted that cabinet holes matching the size of the range hood body 100 are pre-drilled on the cabinet panel. When installing the range hood body 100, the worker first lifts the range hood body 100 upwards towards the cabinet hole. The inclined plate 520 is pressed by the edge of the cabinet hole, causing the flat plate 530 to retract along the notch. After the elastic release member 500 passes the cabinet hole upwards, the inclined plate 520 returns to its elastic deformation, causing the flat plate 530 to return to its original position. The flat plate 530 abuts against the top of the cabinet hole, preventing the range hood body 100 from falling. Then, other fixing structures are used to fix the range hood body 100, which helps with single-person installation.

[0039] See Figure 2In some embodiments of this utility model, the left and right sides of the range hood housing 110 are recessed with at least two recessed sections 111 spaced apart in the front-to-back direction. The range hood housing 110 is provided with a drive rod 610 passing through the recessed section 111 in the vertical direction. The drive rod 610 is provided with a hanging support 620. The hanging support 620 can rotate around the axial direction of the drive rod 610 to be housed within the recessed section 111 or extend beyond the recessed section 111. It can be understood that when the flat plate 530 abuts against the top of the cabinet hole to prevent the range hood body 100 from falling, the entire assembly of the drive rod 610 and the hanging support 620 can be rotated together to extend beyond the recessed section 111, so that the range hood body 100 can be hung on the cabinet hole using multiple hanging supports 620.

[0040] See Figure 2 In some embodiments of this utility model, the drive rod 610 is rotatable relative to the range hood housing 110. The drive rod 610 is provided with an external thread, and the mounting support 620 is provided with a nut 630 that mates with the external thread. With the mounting support 620 fixed, the user can rotate the drive rod 610 to move the mounting support 620 up and down along the length of the drive rod 610, thereby adjusting the height of the mounting support 620 to prevent the range hood body 100 from tilting.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An externally mounted smoke hood device, characterized in that, include: The range hood body (100) and the fan device (200) are separate components. The range hood body (100) includes a range hood housing (110), an air intake chamber (120) inside the housing (110), a smoke collection chamber (130) at the bottom of the housing (110) with an opening facing downwards and communicating with the air intake chamber (120), and a first exhaust pipe (140) at the top of the housing (110). The fan device (200) includes a mounting bracket (210) and a fan assembly. A vent housing (220) is provided on the mounting bracket (210), the mounting bracket (210) is used to fix it to one side of the external wall or public smoke pipe, a first fan (230) is provided inside the vent housing (220), the vent housing (220) is provided with a smoke inlet (240) that connects the air inlet side of the first fan (230) to the first smoke exhaust pipe (140) and a smoke exhaust outlet (250) that connects the exhaust side of the first fan (230) to the outside or public smoke pipe.

2. The externally mounted smoke hood device according to claim 1, characterized in that: The outer casing (110) of the smoke hood is equipped with a second fan (150) that drives the airflow to flow sequentially through the smoke collection chamber (130), the air intake chamber (120) and the first exhaust pipe (140). The volume of the second fan (150) is smaller than that of the first fan (230), and the power of the second fan (150) is smaller than that of the first fan (230).

3. The externally mounted smoke hood device according to claim 2, characterized in that: The dimensions of the range hood housing (110) in the front-to-back direction are the same as those of the second fan (150) in the front-to-back direction. The second fan (150) is electrically connected to an electrical control box (160) located on its left or right side. The upper left and upper right corners of the range hood housing (110) are provided with guide slopes (170) that are inclined toward the middle position.

4. The externally mounted smoke hood device according to claim 1, characterized in that: The air chamber shell (220) is cylindrical, the smoke inlet (240) is located at one end of the air chamber shell (220), the smoke outlet (250) is arranged around the outer peripheral wall of the air chamber shell (220), and the other end of the air chamber shell (220) is provided with a baffle (260) to guide the airflow outward from the smoke outlet (250).

5. The externally mounted smoke hood device according to claim 4, characterized in that: The first fan (230) includes a rotating impeller (231) rotatably disposed in the air chamber shell (220) and a motor (232) driving the rotating impeller (231) to rotate. The motor (232) is mounted on a mounting plate fixed to the inner side of the baffle (260). The rotating impeller (231) includes a funnel-shaped guide tube (233) with its smaller end facing the smoke inlet (240), a guide plate (234) disposed opposite to the larger end of the guide tube (233), and multiple spiral blades (235) connected between the guide tube (233) and the guide plate (234). When the rotating impeller (231) rotates, it drives the airflow from between the spiral blades (235) to the smoke outlet (250).

6. The externally mounted smoke hood device according to claim 1, characterized in that: A filter assembly (300) is detachably installed inside the smoke collection chamber (130). A guide plate (400) is rotatably mounted below the filter assembly (300) at the opening of the smoke collection chamber (130). The guide plate (400) can be rotated to an inclined state to expose the filter assembly (300), or the guide plate (400) can be rotated to a horizontal state to form an air intake gap.

7. The externally mounted smoke hood device according to claim 6, characterized in that: The left and right ends of the rear edge of the guide plate (400) are pivotally connected to the outer casing (110) of the range hood. The front edge of the guide plate (400) is fixed to the outer casing (110) of the range hood by a magnetic suction assembly. The bottom of the outer casing (110) has an installation port that connects the air intake chamber (120) and the smoke collection chamber (130). The inner circumferential contour of the installation port matches the outer contour of the filter assembly (300). The opposite sides of the filter assembly (300) are installed in the installation port by an elastic snap fastener assembly.

8. The externally mounted smoke hood device according to claim 1, characterized in that: The left and right sides of the range hood housing (110) are provided with elastic release members (500). The elastic release member (500) includes a fixing part (510) provided in the range hood housing (110), an inclined plate part (520) connected to the fixing part (510) and inclined away from the range hood housing (110), and a flat plate part (530) connected to the lower end of the inclined plate part (520). The range hood housing (110) is provided with a notch for the flat plate part (530) to extend and retract.

9. The externally mounted smoke hood device according to claim 8, characterized in that: The left and right sides of the range hood housing (110) are both recessed and provided with at least two recessed sections (111) arranged at intervals in the front-back direction. The range hood housing (110) is provided with a drive rod (610) that passes through the recessed section (111) in the vertical direction. The drive rod (610) is provided with a mounting support (620). The mounting support (620) can rotate around the axis of the drive rod (610) to be housed in the recessed section (111) or extend out of the recessed section (111).

10. The externally mounted smoke hood device according to claim 9, characterized in that: The drive rod (610) can only rotate relative to the outer casing (110) of the smoke machine. The drive rod (610) is provided with an external thread, and the mounting support (620) is provided with a nut (630) that mates with the external thread.

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