A large area filtration desktop smoke machine

Abstract

The utility model discloses a large area filters's desktop fume exhaust, it includes fume exhaust body and filter device, fume exhaust body is equipped with the smoke channel, and the both ends of smoke channel are equipped with suction port and exhaust port respectively, filter device can be dismantled and is connected on the exhaust port, and filter device includes cylindrical filter layer and flow guide cone, and the one end cylinder mouth of cylindrical filter layer is towards the exhaust port, and flow guide cone sets up in cylindrical filter layer, and the tip of flow guide cone points to the exhaust port and extends to the one end cylinder mouth of cylindrical filter layer, and the wide end of flow guide cone blocks the other end cylinder mouth of cylindrical filter layer. The utility model discloses filter device has cylindrical filter layer, and cylindrical filter layer can form larger filter area, and at the same time, sets up flow guide cone in the cylinder, and the oil fume of exhaust port axial discharge is guided to radial flow to pass through the wall surface of cylindrical filter layer, makes the wall surface of cylindrical filter layer all be effective filter area, and greatly promotes the filtering effect.

Description

Technical Field

[0001] This utility model relates to a desktop range hood, and more particularly to a desktop range hood with a large-area filtration system. Background Technology

[0002] Chinese Patent Publication No. CN117366639A, published on January 9, 2024, discloses an air outlet structure, a range hood, and a desktop range hood. The air outlet structure includes a guide member disposed near the air outlet, directly facing the air outlet, with a gap between the guide member and the air outlet. The guide member is adapted to block airflow from the front of the air outlet, and the airflow from the air outlet is discharged through the gap between the guide member and the air outlet, forming a side air outlet. The range hood's intake inlet has a filter screen; the filtration area depends on the radial cross-sectional area of ​​the intake inlet. A smaller filtration area affects the filtration effect. Utility Model Content

[0003] The purpose of this invention is to provide a desktop range hood with a simple and reasonable structure that can perform large-area filtration using the axial outer circumferential surface of the filter device.

[0004] The purpose of this utility model is achieved as follows: A desktop range hood with large-area filtration includes a range hood body and a filtration device. The range hood body has a smoke extraction channel with a suction port and an exhaust port at both ends. The filtration device is detachably connected to the exhaust port and includes a cylindrical filter layer and a guide cone. One end of the cylindrical filter layer faces the exhaust port. The guide cone is disposed inside the cylindrical filter layer, with its tip pointing towards the exhaust port and extending to one end of the cylindrical filter layer. The wide end of the guide cone blocks the other end of the cylindrical filter layer.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the filter device further includes a front cover ring and a rear cover ring, the rear cover ring being connected to the outer periphery of the wide end of the guide cone, and the cylindrical filter layer being disposed between the front cover ring and the rear cover ring; the filter device is detachably connected to the smoke hood body through the front cover ring.

[0006] As a further embodiment, both the rear end of the front cover ring and the front end of the rear cover ring are provided with annular grooves, and the end of the cylindrical filter layer is inserted into the annular grooves.

[0007] As a further option, the cylindrical filter layer is a pleated filter cotton.

[0008] As a further embodiment, the filtration device also includes a cage frame supported on the inner wall of the cylindrical filter layer, with the flow guide cone located inside the cage frame.

[0009] As a further embodiment, the cage frame includes a front cover ring, a rear cover ring, and ribs connecting the front cover ring and the rear cover ring; the cylindrical filter layer is formed by a filter screen and wraps around the outer periphery of the cage frame; the two ends of the filter screen overlap each other.

[0010] As a further solution, the exhaust port is wide at the front end and narrow at the rear end, thereby accelerating the exhaust airflow. This causes the airflow to move radially after impacting the conical surface of the guide cone and then impacting the wall of the cylindrical filter layer, thus achieving filtration.

[0011] As a further embodiment, the range hood body includes a casing, the smoke extraction channel includes an air duct and a smoke extraction fan, the casing is cylindrical, the air duct is formed inside the casing in a front-to-back direction, the smoke extraction fan is disposed inside the air duct, and the front and rear ends of the air duct are the suction port and the exhaust port, respectively.

[0012] As a further embodiment, the outer periphery of the housing is provided with a side air outlet channel corresponding to the rear of the suction port. The side air outlet channel is independent of the smoke extraction channel. The side air outlet channel is provided with a side air outlet. The side air outlet is independent of the exhaust port. The airflow blown out by the side air outlet forms a wind wall. The side air outlet channel is connected to a positive pressure air source.

[0013] As a further option, the filter device is fastened, magnetically connected, or threadedly connected to the range hood body.

[0014] The rear end of the housing is also provided with a dust cover, the surface of which has several small holes and is placed over the filter device.

[0015] The beneficial effects of this utility model are as follows: (1) The filter device of this utility model has a cylindrical filter layer, which can form a large filter area. At the same time, a guide cone is set inside the cylinder to guide the oil fumes discharged axially from the exhaust port to flow radially, so that they pass through the wall of the cylindrical filter layer, making the entire wall of the cylindrical filter layer an effective filter area, which greatly improves the filtration effect.

[0016] (2) This utility model has a larger filtration area and a larger flow rate, which reduces the pressure difference between the suction port and the exhaust port, thus reducing noise. It is also beneficial to increase the speed of the smoke extraction fan during the design process to enhance the suction strength. Attached Figure Description

[0017] Figure 1 This is a schematic axial cross-sectional view of an embodiment of the smoke hood of this utility model.

[0018] Figure 2 This is an exploded structural diagram of the first embodiment of the filtration device in this utility model.

[0019] Figure 3This is a schematic diagram of the assembled structure of the first embodiment of the filter device in this utility model.

[0020] Figure 4 This is a partial cross-sectional view of the filter device and the range hood body magnetically connected in this utility model.

[0021] Figure 5 This is a schematic diagram of another embodiment of the collar in this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the first embodiment of the filter device in this utility model after the snap-fit ​​is installed.

[0023] Figure 7 This is a three-dimensional structural diagram of the second embodiment of the filtration device in this utility model.

[0024] Figure 8 This is a cross-sectional structural diagram of the second embodiment of the filtration device in this utility model.

[0025] Figure 9 This is an exploded structural diagram of the second embodiment of the filtration device in this utility model.

[0026] Figure 10 This is an exploded structural diagram of the third embodiment of the filtration device in this utility model.

[0027] Figure 11 This is an exploded structural diagram of the fourth embodiment of the filtration device in this utility model.

[0028] Figure 12 This is a cross-sectional structural diagram of a further embodiment of the present invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1, see Figures 1 to 4 As shown, a desktop range hood with large-area filtration includes a range hood body 10 and a filter device 5. The range hood body 10 is provided with a smoke-smoking channel, and the two ends of the smoke-smoking channel are respectively provided with a suction port 11 and an exhaust port 13. The filter device 5 is detachably connected to the exhaust port 13. The filter device 5 includes a cylindrical filter layer 51 and a guide cone 52. One end of the cylindrical filter layer 51 faces the exhaust port 13. The guide cone 52 is disposed inside the cylindrical filter layer 51. The tip of the guide cone 52 points to the exhaust port 13 and extends to one end of the cylindrical filter layer 51. The wide end of the guide cone 52 blocks the other end of the cylindrical filter layer 51.

[0030] The filter device 5 also includes a front cover ring 54 and a rear cover ring 53. The rear cover ring 53 is connected to the outer periphery of the wide end of the guide cone 52. The cylindrical filter layer 51 is disposed between the front cover ring 54 and the rear cover ring 53. The filter device 5 is detachably connected to the smoke machine body 10 through the front cover ring 54.

[0031] The rear end of the front cover ring 54 and the front end of the rear cover ring 53 are both provided with annular grooves 531, and the end of the cylindrical filter layer 51 is inserted into the annular grooves 531.

[0032] The cylindrical filter layer 51 is a pleated filter cotton.

[0033] The main body of the range hood 10 includes a housing 1, and the smoke extraction channel includes an air duct 14 and a smoke extraction fan. The housing 1 is cylindrical, and the air duct 14 is formed inside the housing 1 in a front-to-back direction. The smoke extraction fan is disposed inside the air duct 14, and the front and rear ends of the air duct 14 are the suction port 11 and the exhaust port 13, respectively.

[0034] The outer periphery of the casing 1 is also provided with a side air outlet 34 corresponding to the rear of the suction port 11. The side air outlet 34 is independent of the smoke extraction channel. The side air outlet 34 is provided with a side air outlet 31. The side air outlet 31 is independent of the exhaust port 13. The air outlet 31 blows out air to form a wind wall. The side air outlet 34 is connected to the positive pressure air source.

[0035] The smoke extraction fan includes an impeller 21 and a motor 22, with the impeller 21 and motor 22 being connected in a driving connection. A motor frame 23 is provided inside the air duct 14, and the motor 22 is mounted on the motor frame 23. The motor frame 23 is provided with a wire groove 24, which facilitates the passage of wires connecting the air supply fan 4 and the smoke extraction fan.

[0036] The air supply fan and the smoke extraction fan are connected in parallel; or, the air supply fan and the smoke extraction fan are controlled independently of each other.

[0037] The rear end of the housing 1 is provided with a collar 33, which, together with the housing 1, forms the side air outlet channel 34. The upper and lower sides of the collar 33 are respectively provided with a side air outlet 31 and an air inlet 32. The blowing device also includes a pipe 41, with a blower installed inside the pipe 41. One end of the pipe 41 is an air outlet 42, which connects to the air inlet 32 ​​of the side air outlet channel 34. The other end of the pipe 41 is an air intake 43, connecting to the outside. A wire hole is also provided at the end of the pipe 41 connected to the air inlet 32, allowing a wire drawn from the wire trough 16 to pass through the wire hole and electrically connect to the blower 25 inside the pipe 41.

[0038] The inner wall of the exhaust port 15 is tapered, wider at the front end and narrower at the back end.

[0039] The rear end of the housing 1 is provided with a reduced diameter sleeve, and the inner side of the reduced diameter sleeve forms the conical exhaust port. The outer periphery of the reduced diameter sleeve is also provided with a support plate. The collar 33 includes a wall panel and a rear end ring surface. The center of the rear end ring surface forms a clearance opening, which is opposite to the exhaust port 13. The inner end of the rear end ring surface abuts against the rear end of the support plate, and the front end of the wall panel abuts against the front end of the support plate. The support plate, the wall panel, and the inner end of the rear end ring surface together form the side air outlet channel 34. The upper end of the wall panel is provided with a notch, which forms the side air outlet 31.

[0040] The front end of the suction port 11 is also provided with a smoke collection hood 7, and a primary filter 6 is provided inside the smoke collection hood 7.

[0041] The filter device 5 is magnetically connected to the range hood body 10. Specifically, a magnet 56 is provided on the collar 33, and an iron block 55 is provided on the front cover ring 54 of the filter device 5. The filter device 5 is magnetically connected to the magnet 56 through the iron block 55.

[0042] join Figure 5 and Figure 6 As shown, the filter device 5 is fastened to the smoke hood body 10. Specifically, the collar 33 has two or more fastening holes 331 evenly distributed around its center, and the front cover ring 54 of the filter device 5 is provided with corresponding buckles 542, which are screwed into the fastening holes 331. The wall surface of the fastening hole 331 is also provided with anti-retraction protrusions 332.

[0043] Example 2 differs from Example 1 in that: [Participants...] Figures 7-9 As shown, the filter device 5 also includes a cage 57, the end of which is inserted into the annular groove 531, and the cylindrical filter layer 51 is wrapped around the cage 57.

[0044] The cage frame 57 includes a front cover ring 572, a rear cover ring 573, and a rib 571 connecting the front cover ring 572 and the rear cover ring 573.

[0045] The cylindrical filter layer 51 is formed by a filter screen and is wrapped around the outer periphery of the cage 57; the two ends of the filter screen overlap each other.

[0046] See Figure 10 As shown, the front cover ring at the front end of the cage frame 57 is removed, and the front end of the cage frame 57 is integrally formed with the front cover ring 54. Alternatively, see... Figure 11 As shown, the rear cover ring at the rear end of the cage frame 57 is removed, and the rear end of the cage frame 57 is integrally formed with the rear cover ring 53.

[0047] Combination Figure 12As shown, in the above embodiment, the rear end of the housing 1 is also provided with a dust cover 9. The surface of the dust cover 9 is provided with several small holes and is covered outside the main filter element 3 and the air blower. The smoke hood 7 or the housing 1 is also provided with an oil drain hole 71 below the primary filter screen 6. An oil cup 72 is provided below the oil drain hole 71 of the smoke hood 7 or the housing 1.

[0048] The outer casing 1 is also provided with a decorative sleeve 8. The decorative sleeve 8, the oil cup 72, and the dust cover 9 are all in the same shape, so that the front and rear ends of the whole machine are naturally transitioned. The dust cover 9 and the oil cup 72 can be fastened to the front and rear ends of the decorative sleeve 8, or magnetically attached, respectively.

[0049] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A desktop range hood with large-area filtration, comprising a range hood body (10) and a filtration device (5), wherein the range hood body (10) is provided with a smoke-smoking channel, and the two ends of the smoke-smoking channel are respectively provided with a suction port (11) and an exhaust port (13), characterized in that: The filter device (5) is detachably connected to the exhaust port (13). The filter device (5) includes a cylindrical filter layer (51) and a guide cone (52). One end of the cylindrical filter layer (51) faces the exhaust port (13). The guide cone (52) is disposed inside the cylindrical filter layer (51). The tip of the guide cone (52) points to the exhaust port (13) and extends to one end of the cylindrical filter layer (51). The wide end of the guide cone (52) blocks the other end of the cylindrical filter layer (51).

2. The tabletop smoke machine of claim 1, wherein: The filter device (5) also includes a front cover ring (54) and a rear cover ring (53). The rear cover ring (53) is connected to the outer periphery of the wide end of the guide cone (52). The cylindrical filter layer (51) is disposed between the front cover ring (54) and the rear cover ring (53). The filter device (5) is detachably connected to the smoke machine body (10) through the front cover ring (54).

3. The tabletop smoke machine of claim 2, wherein: The rear end of the front cover ring (54) and the front end of the rear cover ring (53) are both provided with annular grooves (531), and the end of the cylindrical filter layer (51) is inserted into the annular grooves (531).

4. The tabletop smoke purifier of claim 1, wherein: The tubular filter layer (51) is a pleated filter cotton.

5. The tabletop smoke purifier of claim 3, wherein: The filter device (5) also includes a cage (57) supported on the inner wall of the cylindrical filter layer (51), and the guide cone (52) is located inside the cage (57).

6. The tabletop smoke machine of claim 5, wherein: The cage frame (57) includes a front cover ring (572), a rear cover ring (573), and a rib (571) connecting the front cover ring (572) and the rear cover ring (573); the front cover ring (572) and the rear cover ring (573) fall into the annular groove (531) of the front cover ring (54) and the rear cover ring (53), respectively; Alternatively, the cage (57) includes a rib (571) and a cover ring, one end of the rib (571) being connected to the cover ring and the other end of the rib (571) being connected to the front cover ring (54) or the rear cover ring (53), and the cover ring (573) falling into the annular groove (531) of the rear cover ring (53) or the front cover ring (54); The cylindrical filter layer (51) is formed by a filter screen and is wrapped around the outer periphery of the cage (57); the two ends of the filter screen overlap each other.

7. The tabletop smoke purifier of claim 1, wherein: The exhaust port (13) is wide at the front end and narrow at the rear end; the filter device (5) is fastened, magnetically connected or threaded to the smoke machine body (10).

8. The tabletop smoke purifier of claim 1, wherein: The main body (10) of the smoke hood includes a housing (1), the smoke duct includes an air duct (14) and a smoke hood fan. The housing (1) is cylindrical, and the air duct (14) is formed inside the housing (1) in a front-to-back direction. The smoke hood fan is installed inside the air duct (14). The front and rear ends of the air duct (14) are the suction port (11) and the exhaust port (13), respectively.

9. The tabletop smoke machine of claim 8, wherein: The outer periphery of the casing (1) is also provided with a side air outlet channel (34) corresponding to the back of the suction port (11). The side air outlet channel (34) is independent of the smoke extraction channel. The side air outlet channel (34) is provided with a side air outlet (31). The side air outlet (31) is independent of the exhaust port (13). The side air outlet (31) blows out airflow to form a wind wall. The side air outlet channel (34) is connected to the positive pressure air source.

10. The tabletop smoke purifier of claim 8, wherein: The rear end of the casing (1) is further provided with a dust cover (9), and the surface of the dust cover (9) is provided with a plurality of small holes and covers the filter device (5) outside.

Images