A table-top extractor with adjustable suction distance

Abstract

The utility model discloses a table top range hood of suction distance adjustable, it includes range hood body and be used for filtering oil fume's filter device, and range hood body is equipped with smoke suction passage, and the both ends of smoke suction passage are equipped with fixed suction port and exhaust port respectively, the front end of range hood body is equipped with sleeve pipe, and the rear end of sleeve pipe is linked with fixed suction port, and the front end of sleeve pipe forms movable suction port, sleeve pipe and range hood body are back and forth movable telescopic cooperation, or, sleeve pipe is telescopic pipe, the utility model discloses the sleeve pipe of telescopic setting of range hood body front end, and the front end of sleeve pipe forms movable suction port, and the relative distance of movable suction port and range hood body can be adjusted, can realize to the oil fume source head close, or, the movable suction port of being convenient for user is adjusted to the required position.

Description

Technical Field

[0001] This utility model relates to a desktop range hood, and more particularly to a desktop range hood with adjustable suction distance. Background Technology

[0002] Chinese Patent Publication No. CN117366639A, published on January 9, 2024, discloses an air outlet structure, a fume extraction device, 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 airflow. The relative distance between the fume inlet of this desktop range hood and the base (the fixed placement position of the desktop range hood) is fixed. When it is necessary to move the fume inlet closer to the fume source, the entire machine must be moved closer. However, due to the limitations of the base, the base cannot be moved further when it is close to the load-bearing structure of the fume source. Utility Model Content

[0003] The purpose of this utility model is to provide a desktop range hood with a simple and reasonable structure and an adjustable suction distance, in which the suction port can be close to the source of oil fumes or maintain the most favorable suction distance from the source of oil fumes.

[0004] The purpose of this utility model is achieved as follows: A desktop range hood with adjustable suction distance includes a range hood body and a filter device for filtering oil fumes. The range hood body has a suction channel with a fixed suction port and an exhaust port at both ends. The front end of the range hood body is provided with a sleeve, the rear end of which is connected to the fixed suction port, and the front end of the sleeve forms a movable suction port. The sleeve and the range hood body are movable and extendable in a telescopic cooperation, or the sleeve is a telescopic tube.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the range hood body includes a housing, the smoke extraction channel includes an air duct and a smoke extraction fan, the housing is cylindrical, the air duct is formed inside the housing in a front-to-back direction, the smoke extraction fan is installed inside the air duct, and the front and rear ends of the air duct are the fixed suction port and the exhaust port, respectively; the sleeve is directly or indirectly engaged with the front end of the housing.

[0006] As a further embodiment, the front end of the housing is also provided with a connecting sleeve, which is tubular in shape. One end of the connecting sleeve is sleeved with the fixed suction port, and the front end of the connecting sleeve is sleeved with the rear end of the sleeve.

[0007] As a further embodiment, the sleeve is in the shape of a straight cylindrical tube; or, the front and rear ends of the sleeve are respectively in the shape of a trumpet and a straight cylindrical tube; or, the sleeve is in the shape of a straight cylindrical tube and has a beveled opening at the front end, with the upper end of the bevel extending forward.

[0008] As a further embodiment, the filtration device includes a primary filter screen disposed at the fixed suction port.

[0009] As a further embodiment, the filtration device includes a high-efficiency filter element, which includes a cylindrical filter layer and a flow guide cone. One end of the cylindrical filter layer faces the exhaust port, and the flow guide cone is disposed inside the cylindrical filter layer. The tip of the flow guide cone points to the exhaust port and extends to one end of the cylindrical filter layer, while the wide end of the flow guide cone blocks the other end of the cylindrical filter layer.

[0010] As a further embodiment, the outer periphery of the housing is provided with a side air outlet channel corresponding to the rear of the fixed 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 the positive pressure air source.

[0011] As a further embodiment, the side air outlet is slit-shaped, and the included angle α between the two ends of the side air outlet and the central axis of the housing is 90 degrees to 360 degrees.

[0012] As a further embodiment, the inner wall of the exhaust port is tapered, wider at the front end and narrower at the rear end.

[0013] As a further embodiment, the positive pressure air source includes an air supply duct and an air supply fan. The air supply fan is installed inside the air supply duct, which has an air outlet and an air inlet connected to it. The air outlet is connected to the air inlet of the side air outlet duct, and the air inlet is connected to the outside.

[0014] The beneficial effects of this utility model are as follows: (1) The front end of the range hood body of this utility model is provided with a sleeve, and the front end of the sleeve forms a movable suction port. The relative distance between the movable suction port and the range hood body can be adjusted, so as to move closer to the source of oil fumes, or to facilitate the user to adjust the movable suction port to the desired position.

[0015] (2) The outer periphery of the smoke machine body of this utility model is provided with a side air outlet channel and a side air outlet. The wind wall generated when the side air outlet blows is not affected by the wind pressure of the smoke outlet channel, which greatly reduces the escape of oil fumes from the source of oil fumes. Moreover, the side air outlet is located between the suction port and the exhaust port, making the structure more compact. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the axial cross-sectional structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the second embodiment of the sleeve in this utility model.

[0019] Figure 4 This is a schematic diagram of the third embodiment of the sleeve in this utility model.

[0020] Figure 5 This is a schematic diagram of another embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1, see Figure 1 and Figure 2 As shown, a desktop range hood with adjustable suction distance includes a range hood body and a filter device for filtering oil fumes. The range hood body is provided with a suction channel, and fixed suction ports 11 and exhaust ports 12 are respectively provided at both ends of the suction channel. The front end of the range hood body is provided with a sleeve 22, the rear end of the sleeve 22 is connected to the fixed suction port 11, and the front end of the sleeve 22 forms a movable suction port. The sleeve 22 is in a movable extension and retraction cooperation with the range hood body.

[0022] The main body of the range hood includes a housing 1, and the smoke extraction channel includes an air duct 13 and a smoke extraction fan. The housing 1 is cylindrical, and the air duct 13 is formed inside the housing 1 in a front-to-back direction. The smoke extraction fan is installed inside the air duct 13, and the front and rear ends of the air duct 13 are the fixed suction port 11 and the exhaust port 12, respectively. The sleeve 22 is directly or indirectly engaged with the front end of the housing 1.

[0023] The front end of the housing 1 is also provided with a connecting sleeve 21. The connecting sleeve 21 is tubular. One end of the connecting sleeve 21 is sleeved with the fixed suction port 11, and the front end of the connecting sleeve 21 is sleeved with the rear end of the sleeve 22.

[0024] The sleeve 22 is generally in the shape of a straight cylindrical tube; or, the front and rear ends of the sleeve 22 are respectively flared and straight cylindrical, resulting in a wider smoke collection range, see Figure 3 As shown; or, the sleeve 22 is a straight cylindrical shape with a beveled opening at the front end, the upper end of which extends forward to reduce the upward escape of oil fumes, see Figure 4 As shown.

[0025] The filtration device includes a primary filter screen 5, which is disposed at the fixed suction port 11.

[0026] The filtration device includes a high-efficiency filter element 4, which includes a cylindrical filter layer 41 and a flow guide cone 42. One end of the cylindrical filter layer 41 faces the exhaust port 12. The flow guide cone 42 is disposed inside the cylindrical filter layer 41, with its tip pointing towards the exhaust port 12 and extending to one end of the cylindrical filter layer 41. The wide end of the flow guide cone 42 blocks the other end of the cylindrical filter layer 41.

[0027] The outer periphery of the housing 1 is also provided with a side air outlet 32 ​​corresponding to the rear of the fixed suction port 11. The side air outlet 32 ​​is independent of the smoke extraction channel. The side air outlet 32 ​​is provided with a side air outlet 31. The side air outlet 31 is independent of the exhaust port 12. The side air outlet 31 blows out airflow to form a wind wall. The side air outlet 32 ​​is connected to the positive pressure air source.

[0028] The side air outlet 31 is slit-shaped, and the included angle α between the two ends of the side air outlet 31 and the central axis of the housing 1 is 180 degrees.

[0029] The inner wall of the exhaust port 12 is tapered, wider at the front end and narrower at the back end.

[0030] The positive pressure air source includes an air supply channel 34 and an air supply fan 33. The air supply fan 33 is installed in the air supply channel 34. The air supply channel 34 is provided with an air outlet 36 and an air inlet 35 connected thereto. The air outlet 36 is connected to the air inlet of the side air outlet channel 32, and the air inlet 35 is connected to the outside.

[0031] The bottom of the housing 1 is also provided with a bracket connection position 15 for connecting with a bracket; or, the bottom of the housing 1 is provided with a support, and the bracket or support makes it easy for the range hood to be placed on a table for use, which is not shown in the figure.

[0032] Example 2 differs from Example 1 in that: See [link to example 1] Figure 5 As shown, the sleeve 22 directly engages with the fixed suction port 11 at the front end of the housing 1, and the sleeve 22 is a telescopic tube.

[0033] As a further option, the primary filter 5 can be replaced by being located at the active suction port 221 to reduce the accumulation of oil fumes on the inner wall of the sleeve 22.

[0034] 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 table type smoke exhauster with adjustable suction distance, comprising a smoke exhauster body and a filtering device for filtering smoke, the smoke exhauster body being provided with a smoke suction channel, the two ends of the smoke suction channel being respectively provided with a fixed suction port (11) and an exhaust port (12); characterized in that: The front end of the range hood body is provided with a sleeve (22), the rear end of the sleeve (22) is connected to the fixed suction port (11), and the front end of the sleeve (22) forms a movable suction port; the sleeve (22) and the range hood body move and extend in a coordinated manner, or the sleeve (22) is a telescopic tube.

2. The adjustable-suction-distance table evaporator of claim 1, wherein: The main body of the smoke hood includes a housing (1), the smoke duct includes an air duct (13) and a smoke hood fan. The housing (1) is cylindrical, and the air duct (13) is formed inside the housing (1) in a front-to-back direction. The smoke hood fan is installed inside the air duct (13). The front and rear ends of the air duct (13) are the fixed suction port (11) and the exhaust port (12), respectively. The sleeve (22) is directly or indirectly engaged with the front end of the housing (1).

3. The table fan as claimed in claim 2, wherein: The front end of the housing (1) is also provided with a connecting sleeve (21). The connecting sleeve (21) is tubular. The end of the connecting sleeve (21) is sleeved with the fixed suction port (11), and the front end of the connecting sleeve (21) is sleeved with the rear end of the sleeve (22).

4. The adjustable-suction-distance table evaporator of claim 1, wherein: The sleeve (22) is in the shape of a straight cylindrical tube; or, the front and rear ends of the sleeve (22) are respectively in the shape of a trumpet and a straight cylindrical tube; or, the sleeve (22) is in the shape of a straight cylindrical tube and has a beveled opening at the front end, with the upper end of the bevel extending forward.

5. The adjustable-suction-distance table evaporator of claim 1, wherein: The filtration device includes a primary filter screen (5), which is located at the fixed suction port (11).

6. The adjustable-suction-distance table evaporator of claim 1, wherein: The filtration device includes a high-efficiency filter element (4), which includes a cylindrical filter layer (41) and a guide cone (42). One end of the cylindrical filter layer (41) faces the exhaust port (12). The guide cone (42) is disposed inside the cylindrical filter layer (41). The tip of the guide cone (42) points to the exhaust port (12) and extends to one end of the cylindrical filter layer (41). The wide end of the guide cone (42) blocks the other end of the cylindrical filter layer (41).

7. The adjustable-suction-distance table fan of claim 2, wherein: The outer periphery of the casing (1) is also provided with a side air outlet channel (32) corresponding to the rear of the fixed suction port (11). The side air outlet channel (32) is independent of the smoke channel. The side air outlet channel (32) is provided with a side air outlet (31). The side air outlet (31) is independent of the exhaust port (12). The side air outlet (31) blows out airflow to form a wind wall. The side air outlet channel (32) is connected to the positive pressure air source.

8. The adjustable-suction-distance table fan of claim 7, wherein: The side air outlet (31) is slit-shaped, and the angle α between the two ends of the side air outlet (31) and the central axis of the housing (1) is 90 degrees to 360 degrees.

9. The adjustable-suction-distance table evaporator of claim 1, wherein: The inner wall of the exhaust port (12) is cone-shaped, with a wider front end and a narrower rear end.

10. The table fan as claimed in claim 7, wherein: The positive pressure air source includes an air supply channel (34) and an air supply fan (33). The air supply fan (33) is installed in the air supply channel (34). The air supply channel (34) is provided with an air outlet (36) and an air inlet (35) connected to it. The air outlet (36) is connected to the air inlet of the side air outlet channel (32), and the air inlet (35) is connected to the outside.

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