CN118274349A - Fume exhaust fan - Google Patents

Abstract

The invention relates to a range hood, wherein the range hood comprises a main body and a cyclone filter device arranged in the main body, wherein the cyclone filter device at least comprises: at least one first cyclone structure having a plurality of first cyclone ducts arranged side by side, the first cyclone ducts extending in a depth direction of the range hood and having a first air inlet opening downward in a height direction and a first air outlet opening in the depth direction; and an air flow passage extending in the width direction and communicating with the first air outlets to collect air flows flowing out from the respective first air flow passages of the first air flow structure, wherein the air flow passage has an air outlet that discharges the collected air flows together. The air flow from each cyclone pipeline of the cyclone structure can be stably and reliably guided, the air flow disturbance is avoided, and the working efficiency of the smoke exhaust ventilator is obviously improved.

Description

Fume exhaust fan

Technical Field

The invention relates to the field of household appliances, in particular to a range hood.

Background

In recent years, with the improvement of living standards, a range hood for sucking oil smoke generated during cooking has become an indispensable household appliance. The range hood is generally installed above a kitchen range, and can pump exhaust gas generated by combustion of the range and oil smoke harmful to human bodies generated during cooking out through a flue when in operation, thereby purifying the kitchen environment and reducing pollution.

Here, the oil and grease is contained in the oil and smoke gas sucked by the range hood, and the oil and grease can be solidified and accumulated on the shell, the fan blade or the flue of the range hood, so that the oil leakage risk of the range hood is caused, the normal operation of the fan is influenced, and the service life of the range hood is shortened. For this purpose, in the existing range hood, a filter device is provided, which has a cyclone structure, and the flow of the oil smoke repeatedly impinges on the inner wall in a spiral manner in a cyclone duct of the cyclone structure, so as to separate grease in the flow. However, the filtering devices in existing range hoods are particularly poor in pumping and filtering the oil soot on the left and right sides, which results in that part of the soot escapes from the sides of the range hood into the surrounding environment and causes air pollution. In addition, the gas exiting each cyclone tube of the cyclone structure is not effectively guided, thereby causing the gas flow exiting the cyclone structure to unstably flow inside the hood, thereby adversely affecting the operating efficiency of the hood.

Disclosure of Invention

It is therefore an object of embodiments of the present invention to provide an improved range hood which is capable of stably and reliably guiding air flows coming out of respective cyclone ducts of a cyclone structure, avoiding air flow disturbance, and ensuring efficient suction and filtration of oil smoke gas located at the outside, thereby significantly improving the working efficiency of the range hood.

According to the present invention, there is provided a range hood, wherein the range hood comprises a main body and a cyclone filter device arranged in the main body, wherein the cyclone filter device comprises at least:

-at least one first cyclonic structure having a plurality of first cyclonic ducts arranged side by side, the first cyclonic ducts extending in a depth direction of the range hood and having a first air inlet opening downwardly in a height direction and a first air outlet opening in the depth direction; and

-An air flow channel extending in the width direction and communicating with the first air outlet to collect air flows flowing out from the respective first air swirl tubes of the first air swirl structure, wherein the air flow channel has an air outlet for commonly discharging the collected air flows.

In contrast to the prior art, in the range hood according to the invention, the first cyclone structure of the cyclone filter device has a plurality of first cyclone ducts extending in the depth direction, which have first air inlets opening downward, so as to allow the oil-smoke gas to enter into the first cyclone ducts through the first air inlets, the oil-smoke, in particular located outside the range hood, can be effectively sucked and filtered through the first cyclone ducts extending in the depth direction, wherein the air flow in each first cyclone duct merges through the respective first air outlets into an air flow channel, which extends in the width direction and communicates with the first air outlets, which is perpendicular to the depth direction, whereby the air flow coming out of each first cyclone duct is stabilized through the air flow channel and directed to a common air outlet through which the stabilized air flow flows to the fan region of the range hood. Here, through the cooperation of the first cyclone pipeline that extends along the depth direction of cyclone structure and the air current passageway that extends along the width direction, can realize the high-efficient suction and the smooth stable flow of oil smoke gas to promote smoke ventilator's work efficiency.

According to an exemplary embodiment of the present invention, the longitudinal length of each first cyclone tube of the first cyclone structure is gradually reduced from outside to inside along the width direction. This ensures that the outermost fumes on the left and right sides of the range hood are efficiently sucked and filtered.

According to an exemplary embodiment of the invention, the first air-bearing structure is configured trapezium-like; or one side of the first air-rotating structure provided with the first air outlet is bent or stepped. This enables a flexible configuration of the first air-swirl structure with a satisfactory suction strength of the outside cooking fume.

According to an exemplary embodiment of the present invention, a lateral extension of the air flow channel perpendicular to the width direction increases gradually from outside to inside along the width direction. The transverse sectional area of the air flow channel is gradually increased from outside to inside along the width direction, so that the problem of overlarge back pressure at the inner end of the air flow channel along the width direction or at the exhaust port can be avoided, and the smooth outflow of the air in the air flow channel from the exhaust port is promoted.

According to an exemplary embodiment of the present invention, the first air-swirling structure and the air flow channel are complementarily configured in shape, thereby achieving a simple arrangement of the first air-swirling structure and the air flow channel; and/or the exhaust port of the airflow channel is open towards the center of the main body, thereby enabling the suction airflow to flow more rapidly inside the main body to the fan.

According to an exemplary embodiment of the present invention, the cyclone filter device is symmetrically arranged about a center line of the range hood, wherein the first cyclone structure is arranged at both left and right sides of the main body in the width direction, respectively. The cyclone type filtering device can ensure that the oil smoke gas on the left side and the right side of the range hood is sucked efficiently and uniformly.

According to an exemplary embodiment of the present invention, the cyclone filtering device is obliquely arranged in the main body such that the cyclone filtering device gradually decreases from front to rear in the depth direction. This allows grease filtered out by the cyclonic filter apparatus to flow out of the cyclonic structure under its own weight.

According to an exemplary embodiment of the invention, the cyclonic filter apparatus comprises a plurality of first air-swirling structures arranged at intervals in the depth direction, wherein each first air-swirling structure is assigned a respective air-flow channel and/or a common air-flow channel is provided between adjacent first air-swirling structures. Here, can realize a plurality of independent operation's first gas whirl structures, each first gas whirl structure and corresponding air current passageway can form independent transmission path to guarantee the autonomy of different first gas whirl structures, even if one of them first gas whirl structure takes place to damage, do not influence other first gas whirl structure's normal operating yet.

According to an exemplary embodiment of the invention, the first air flow duct of the first air flow structure is provided with the first air outlet at both end sides; or the first air-swirl tube of the first air-swirl structure is provided with the first air outlet at one end side and is closed at the opposite other end side. Therefore, one-side air outlet or two-side air outlet of the first cyclone pipeline can be set according to the requirement, and the air flow of the first cyclone structure can be set in a targeted manner.

According to an exemplary embodiment of the present invention, the cyclone filtering apparatus includes a second cyclone structure centrally disposed in the main body in the width direction and having at least one second cyclone duct extending in a depth direction of the range hood. Thereby, the filtering area and the filtering efficiency of the cyclone type filtering apparatus can be further increased.

According to an exemplary embodiment of the invention, the main body of the range hood has a fume collecting cavity in which the cyclone filter is arranged. Thereby enabling an integrated compact arrangement of the range hood.

According to an exemplary embodiment of the present invention, the range hood has a moving panel arranged below the cyclone-type filtering device, which in a non-operating state closes the cyclone-type filtering device and in an operating state opens the cyclone-type filtering device to let the flow of the oil smoke into the cyclone-type filtering device. The negative pressure area of the smoke exhaust ventilator can be increased through the moving panel, so that the suction efficiency or smoke capturing rate of the smoke exhaust ventilator is improved, and the cyclone type filtering device is prevented from being damaged by external force.

According to an exemplary embodiment of the present invention, the moving panel has two panel halves which cover left and right negative pressure areas of the main body, respectively. The panel halves are constructed in a manner that they can be moved apart from one another, whereby the operation of the cyclone filter devices on both sides can be controlled separately by the movement of the two panel halves independently of one another, so that the soot produced by the lower hob is sucked in a targeted manner.

According to an exemplary embodiment of the invention, an illumination is provided between the panel halves, which are flush in the inactive state; and/or the motion panel is arranged obliquely. Thereby enabling an optimized appearance effect.

According to an exemplary embodiment of the present invention, the moving panel moves downward in a translational manner when converting from the non-operative state to the operative state. This enables the moving panel to be separated from the negative pressure region of the smoke collection chamber in a simple manner.

According to an exemplary embodiment of the invention, the range hood has an oil collection box which is arranged below the moving panel and can move with the moving panel. The oil and fat filtered out by the cyclone type filtering device can be collected through the oil collecting box, so that the oil and fat can be prevented from falling onto a kitchen range below.

Drawings

The principles, features and advantages of the present invention may be better understood by describing the present invention in more detail with reference to the drawings. The drawings include:

fig. 1 shows a schematic front view of a range hood according to an exemplary embodiment of the present invention;

Fig. 2 shows a schematic bottom view of a range hood according to an exemplary embodiment of the present invention;

Fig. 3 illustrates a schematic perspective view of a cyclone type filtering apparatus of a range hood according to an exemplary embodiment of the present invention;

FIG. 4 shows a cross-sectional view along A-A of FIG. 1;

fig. 5 shows a schematic front view of a range hood according to an exemplary embodiment of the present invention, with its moving panel in an inactive state;

fig. 6a and 6b show a front view and a side view, respectively, of a range hood according to an exemplary embodiment of the present invention, with a moving panel of the range hood in an operative state.

Reference numerals:

100-smoke exhaust ventilator, 10-main body, 11-smoke collecting cavity, 20-cyclone filter, 21-first cyclone structure, 211-first cyclone pipeline, 212-first air inlet, 213-first air outlet, 22-air flow channel, 221-air outlet, 23-second cyclone structure, 231-second cyclone pipeline, 232-second air inlet, 30-motion panel, 31-panel half, 40-oil collecting box, 50-lighting part, X-width direction, Y-depth direction and Z-height direction.

Detailed Description

In order to make the technical problems, technical solutions and advantageous technical effects to be solved by the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and a plurality of exemplary embodiments. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention. Here, for the sake of brevity, elements having the same reference number are labeled only once in the drawings where necessary.

It should be appreciated that the expressions "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any particular order of number of technical features indicated. Features defining "first", "second" or "first" may be expressed or implied as including at least one such feature.

In the description of the present embodiment, words such as "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate an azimuth or a positional relationship, are used to describe the positional relationship of the constituent elements with reference to the drawings, are merely for convenience of description of the present specification and to simplify the description, and do not indicate or imply that the apparatus or elements referred to have a specific azimuth, are configured and operated in a specific azimuth, and thus are not to be construed as limiting the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which each constituent element is described. Therefore, the present invention is not limited to the words described in the specification, and may be appropriately replaced according to circumstances. Here, defined in terms of XYZ rectangular coordinate system in the drawings: the X direction corresponds to the width direction of the hood 100, the Y direction corresponds to the depth direction of the hood 100, and the Z direction corresponds to the height direction of the hood 100.

Fig. 1 shows a schematic front view of a range hood 100 according to an exemplary embodiment of the present invention. Fig. 2 shows a schematic bottom view of the range hood 100 according to an exemplary embodiment of the present invention. Fig. 3 illustrates a schematic perspective view of the cyclone type filtering apparatus 20 of the range hood 100 according to an exemplary embodiment of the present invention.

As shown in fig. 1, the range hood 100 includes a main body 10 that assumes the primary function of the range hood 100 to draw in the oil smoke and illustratively has a smoke collecting cavity 11 configured to promote the soot collecting effect of the range hood 100. In this case, a fan is arranged in the main body 10 above the smoke collection chamber 11, in particular, and a negative pressure region is formed in the smoke collection chamber 11 by the rotation of the blades of the fan, so that the lower smoke gas is sucked into the smoke collection chamber 11. However, it is also conceivable for the blower to be arranged independently of the main body 10.

As shown in fig. 1 and 2, the range hood 100 includes a cyclone filter device 20, for example, disposed in the smoke collecting chamber 11 of the main body 10 and configured to separate grease, moisture and solid particles carried in the sucked smoke gas, thereby preventing the grease from entering into the upper blower and flue area, thereby improving the operation performance and service life of the range hood 100.

As shown in fig. 2 and 3, the cyclone filter device 20 includes at least one first cyclone structure 21 having a plurality of first cyclone ducts 211 arranged side by side, which extend in the depth direction Y of the range hood 100 and have a first air inlet 212 opened downward in the height direction Z and a first air outlet 213 opened in the depth direction Y. Specifically, the oil smoke gas enters the corresponding first cyclone tube 211 through each first air inlet 212 of the first cyclone structure 21, rotationally and accelerated in the depth direction Y in the first cyclone tube and spirally collides on the inner wall of the tube, so that grease, moisture and solid particles in the oil smoke gas are separated, and the purified gas flows out of the first cyclone structure 21 in the depth direction Y through the first air outlet 213, thereby realizing the filtration of the oil smoke gas flow.

As shown in fig. 2 and 3, the cyclone filter device 20 includes an air flow passage 22 extending in the width direction X and communicating with the first air outlets 213 of the first cyclone structure 21 to collect the air flows flowing out of the respective first air flow passages 211 of the first cyclone structure 21, wherein the air flow passage 22 has an air outlet 221 that commonly discharges the collected air flows, which is illustratively opened directly toward the center of the main body 10 of the range hood 100, while an end of the air flow passage 22 facing away from the air outlet 221 is closed, thereby allowing the air in the air flow passage 22 to smoothly flow out through the air outlet 221. The air flow channel 22 is in this case attached to the side of the first air-swirling structure 21 on which the first air outlets 213 are provided and is configured to guide the air flowing out of the first air-swirling structure 21 further in the width direction X into the fan region of the range hood 100, wherein the cooking fume air is in an unstable state in the air flow flowing out of the respective first air outlets 213 of the first air-swirling structure 21, the air flow direction can be changed and stabilized by the air flow channel 22, so that turbulence of the air flow is avoided and smooth flow of the air flow into the fan region is ensured. This can effectively improve the suction efficiency of the hood 100.

Illustratively, as shown in fig. 2 and 3, the longitudinal length of each first air-rotation duct 211 of the first air-rotation structure 21, which is the extension dimension of the first air-rotation duct 211 in the depth direction Y, gradually decreases from the outside to the inside in the width direction X. In this case, the first cyclone duct 211 of the first cyclone structure 21 located at the outermost side in the width direction X has the largest longitudinal length and has the largest first air inlet 212, whereby relatively more air can be introduced into the first cyclone duct 211 from the outermost first air inlet 212, thereby ensuring that the outside air of the hood 100 is efficiently sucked and that the escape of the hood air from the side of the hood 100 to the surrounding environment is prevented as much as possible. Illustratively, the first air-rotating structure 21 is configured in a trapezoid such that the longer bottom side of the first air-rotating structure 21 is located outside in the width direction X and the shorter bottom side is located inside in the width direction X, whereby a simple configuration of the first air-rotating structure 21 can be achieved. However, it is also conceivable that the side edge of the first swirl structure 21, which extends substantially in the width direction X, is curved or stepped, which side edge is provided with the air outlet 213, for example, which likewise makes it possible to gradually reduce the longitudinal length of the first swirl tube 211 in the width direction X from outside to inside, as a result of which a flexible configuration of the first swirl structure is achieved while satisfying the suction strength of the outside oil-smoke gas. Of course, other configurations which are considered to be of interest by the person skilled in the art are also conceivable.

Illustratively, as shown in fig. 2 and 3, the widthwise extension of the airflow passage 22 perpendicular to the widthwise direction X gradually increases from the outside to the inside in the widthwise direction X. Thereby gradually increasing the lateral cross-sectional area of the airflow passage 22 from outside to inside in the width direction X. As the gas coming out of the first gas outlet 213 of the first gas flow channel 211 is increasingly collected into the gas flow channel 22 as seen from the outside toward the inside in the width direction X, the channel volume allowing the gas to flow can be increased by increasing the lateral sectional area of the gas flow channel 22, thereby effectively avoiding the problem of excessive back pressure at the inner end of the gas flow channel 22 or at the gas outlet 221, thereby ensuring that the gas in the gas flow channel 22 can be smoothly discharged through the gas outlet 221.

As shown in fig. 3, the first air-swirling structure 21 and the air-flow channel 22 are formed complementarily, wherein the sides of the first air-swirling structure 21 and the air-flow channel 22 that abut against each other are adapted to each other. It is conceivable here for the first air-flow structure 21 and the air-flow channel 22 to each be of trapezoidal design, wherein the first air-flow structure 21 and the air-flow channel 22 together form a rectangular structure, which enables a simple design and assembly of the cyclone filter device 20.

Illustratively, as shown in fig. 1 and 2, the cyclone type filtering apparatus 20 is symmetrically arranged with respect to a center line of the hood 100, wherein the first cyclone structures 21 are respectively arranged at left and right sides of the main body 10 in the width direction X. This enables uniform suction and filtering capability of the range hood 100 in the width direction X and particularly ensures the grabbing rate of the outermost fume gas of the range hood 100.

Illustratively, as shown in fig. 3, the cyclonic filter apparatus 20 includes two first air-rotating structures 21 disposed on the left and right sides, respectively, the first air-rotating structures being disposed at intervals in the depth direction Y, wherein each first air-rotating structure 21 is assigned a respective air-flow passage 22. It is of course also conceivable to provide a plurality of first air-swirling structures 21 spaced apart in the depth direction Y, each of which is assigned a respective air flow channel 22, whereby the individual first air-swirling structures 21 can be operated independently and share the flow pressure jointly in order to reduce the back pressure in the air flow channels 22 as much as possible. In this case, the first cyclone duct 211 of the first cyclone structure 21 is provided with a first air outlet 213 at an end side facing the associated air flow channel 22 and is closed at the opposite other end side, thereby enabling a single-sided air outlet of the first cyclone structure 21. However, it is also possible that the first cyclone duct 211 of the first cyclone structure 21 is provided with first air outlets 213 at both end sides, whereby two air flow channels 22 are provided for one first cyclone structure 21, so that the first cyclone structure 21 is double-sided, and that the suction air flow from the first cyclone structure 21 enters the air flow channels 22 at both sides through the first air outlets 213 at both end sides, respectively. It is also conceivable to provide a common gas flow duct 22 between adjacent first gas-swirling structures 21, through which the suction gas from the first gas-swirling structures 21 on both sides is discharged.

Illustratively, as shown in fig. 1 and 2, the cyclonic filter apparatus 20 includes a second cyclonic structure 23 centrally disposed in the main body 10 along the width direction X and having at least one second cyclonic duct 231 extending in the depth direction Y of the range hood 100. Here, the second cyclone structure 23 is configured to primarily filter the soot gas located at the intermediate position, which enters the second cyclone structure 23 through the second air inlet 232 of the second cyclone duct 231 and is purified in the second cyclone duct 231, wherein each second cyclone duct 231 extends with the same longitudinal length, and the gas exiting from the second cyclone duct 231 is directly connected to the upper blower area. The filtering area of the cyclone type filtering apparatus 20 can be increased and the filtering capability of the cyclone type filtering apparatus 20 can be further enhanced by the second cyclone structure 23.

Fig. 4 shows a cross-sectional view along A-A of fig. 1.

As shown in fig. 4, the cyclone filter device 20 is obliquely disposed in the smoke collecting chamber 11 of the main body 10 such that the cyclone filter device 20 gradually decreases from front to rear in the depth direction Y. Here, the oil smoke gas flows obliquely downward in the first cyclone tube 211 of the first cyclone structure 21 and enters the air flow passage 22, and the filtered grease flows downward along the tube inner wall of the first cyclone tube 211 and flows out of the first cyclone structure 21 by the self gravity.

As shown in fig. 4, the range hood 100 has a moving panel 30 disposed below the cyclone type filtering apparatus 20, which closes the cyclone type filtering apparatus 20 in a non-operating state to protect the cyclone type filtering apparatus 20 from external damage, and opens the cyclone type filtering apparatus 20 in an operating state to allow a flow of oil smoke to enter into a first air cyclone duct 211 of the cyclone type filtering apparatus 20 through a first air inlet 212. The negative pressure region of the hood 100 in the operating state can be increased by moving the panel 30, thereby improving the suction efficiency of the hood 100. Here, part of the oil smoke gas directly collides on the moving panel 30 in the suction process, so that the carried grease is condensed and accumulated on the moving panel 30, thereby blocking part of the oil smoke gas from directly entering the cyclone type filtering device 20 through the moving panel 30, and sharing the oil filtering pressure of the cyclone type filtering device 20. The movement panel 30 is arranged in particular obliquely, which on the one hand promotes the downward flow of the grease deposited on the movement panel 30 along the movement panel 30 under the action of its own weight, and on the other hand enables the movement panel 30 to close the obliquely arranged cyclone filter device 20 more snugly.

As shown in fig. 4, the range hood 100 further has an oil collecting box 40 detachably disposed under the moving panel 30 to collect the grease filtered out by the cyclone type filtering device 20 and the grease flowing down from the moving panel 30, preventing the grease from falling directly onto the underlying kitchen range, which ensures the cleanliness and hygiene of the kitchen range.

Fig. 5 shows a schematic front view of a range hood 100 according to an exemplary embodiment of the present invention, with the moving panel 30 of the range hood in a non-operative state. Fig. 6a and 6b show a front view and a side view, respectively, of a range hood 100 according to an exemplary embodiment of the present invention, with a moving panel 30 of the range hood in an operative state.

As shown in fig. 5, the moving panel 30 has two panel halves 31 which are respectively disposed at left and right sides of the main body of the hood 100 and cover left and right negative pressure regions of the main body 10, which are generated in the smoke collecting chamber 11 by, for example, the rotation of the blades of the blower, and first cyclone structures 21 at left and right sides of the cyclone filter device 20 are respectively disposed in the corresponding negative pressure regions, through which the lower soot gas can be easily sucked into the first cyclone structures 21.

Illustratively, as shown in fig. 5, an illumination 50 is provided between the two panel halves 31 of the moving panel 30, by means of which illumination the underlying cooktop area is illuminated. In said inactive state, the panel half 31 and the illumination portion 50 are flush. Thereby enabling an optimized external appearance effect of the hood 100 and facilitating the cleaning of the moving panel 30 and the illumination portion 50 by the user.

Illustratively, as shown in fig. 6a and 6b, the panel half 31 of the moving panel 30 moves downward in a translational manner when being converted from the non-operating state to the operating state, so that the panel half 31 is separated from and spaced apart from the left and right negative pressure regions in the operating state, which opens the cyclone type filtering device 20 disposed in the left and right negative pressure regions, and the soot gas can enter into the cyclone type filtering device 20 through the interval between the moving panel 30 and the cyclone type filtering device 20. Of course, other forms of movement of the moving panel 30 are also contemplated, such as pivoting movement.

By way of example, the two panel halves 31 of the moving panel 30 can be moved independently of one another, by means of which movement of the two panel halves 31 independently of one another the operation of the first air-swirling structures 21 on both sides of the cyclone filter device 20 can be controlled separately, so that the soot generated by the lower hob can be sucked in a targeted manner, wherein, when only one hob is in operation, only the panel half 31 on one side can be converted from the inactive state into the active state, while the panel half 31 on the other side remains in the inactive state, which makes it possible to suck the soot gas below in a targeted manner and to extend the service life of the range hood 100 as a whole.

As shown in fig. 6a and 6b, the oil collection cartridge 40 is disposed below the moving panel 30 and is capable of translational movement with the moving panel 30 when the moving panel 30 is converted from the non-operating state to the operating state. Whereby the grease flowing down from the moving panel 30 can be more effectively collected by the grease collecting box 40.

Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless stated differently. In a specific implementation, the features may be combined with one another where technically feasible according to the actual requirements. Various substitutions, alterations, and modifications can be made without departing from the spirit and scope of the invention.

Claims (15)

1. A range hood (100), characterized in that the range hood comprises a main body (10) and a cyclonic filter apparatus (20) arranged in the main body (10), wherein the cyclonic filter apparatus (20) comprises at least:

-at least one first cyclonic structure (21) having a plurality of first cyclonic ducts (211) arranged side by side, extending in a depth direction (Y) of the range hood (100) and having a first air inlet (212) open downwards in a height direction (Z) and a first air outlet (213) open in the depth direction (Y); and

-An air flow channel (22) extending in the width direction (X) and communicating with the first air outlet (213) for converging the air flows out of the respective first cyclone ducts (211) of the first cyclone structure (21), wherein the air flow channel (22) has an air outlet (221) for co-exhausting the converging air flows.

2. The range hood (100) of claim 1, wherein the range hood is configured to,

The longitudinal length of each first cyclone tube (211) of the first cyclone structure (21) gradually decreases from outside to inside along the width direction (X).

3. The range hood (100) of claim 2, wherein the range hood is configured to,

The first air-spinning structure (21) is configured in a trapezoid shape; or alternatively

The side edges of the first air-spinning structure (21) extending along the width direction (X) are bent or stepped.

4. A range hood (100) according to any one of claims 1 to 3, characterized in that,

The lateral extension of the air flow channel (22) perpendicular to the width direction (X) increases gradually from outside to inside along the width direction (X).

5. The range hood (100) according to any one of the preceding claims, characterized in that,

-The first air-swirling structure (21) and the air-flow channel (22) are complementarily shaped; and/or

The exhaust port (221) of the air flow passage (22) is open toward the center of the main body (10).

6. The range hood (100) according to any one of the preceding claims, characterized in that,

The cyclone-type filtering device (20) is symmetrically arranged about a center line of the range hood (100), wherein the first cyclone-type structures (21) are respectively arranged at left and right sides of the main body (10) in the width direction (X); and/or

The cyclone-type filtering device (20) is obliquely arranged in the main body (10) such that the cyclone-type filtering device (20) gradually decreases from front to rear in the depth direction (Y).

7. The range hood (100) according to any one of the preceding claims, characterized in that,

The cyclone filter device (20) comprises a plurality of first cyclone structures (21) which are arranged at intervals in the depth direction (Y), wherein each first cyclone structure (21) is assigned a respective air flow channel (22) and/or a common air flow channel (22) is arranged between adjacent first cyclone structures (21).

8. The range hood (100) according to any one of the preceding claims, characterized in that,

The first cyclone duct (211) of the first cyclone structure (21) is provided with the first air outlet (213) at both end sides; or alternatively

The first cyclone duct (211) of the first cyclone structure (21) is provided with the first air outlet (213) at one end side and is closed at the opposite other end side.

9. The range hood (100) according to any one of the preceding claims, characterized in that,

The cyclonic filter apparatus (20) comprises a second cyclonic structure (23) centrally arranged in the main body (10) in the width direction (X) and having at least one second cyclonic duct (231) extending in the depth direction (Y) of the range hood (100).

10. The range hood (100) according to any one of the preceding claims, characterized in that,

The main body (10) of the range hood (100) has a fume collecting cavity (11) in which the cyclone filter device (20) is arranged.

11. The range hood (100) according to any one of the preceding claims, characterized in that,

The range hood (100) has a movement panel (30) arranged below the cyclone filter (20), which in the inactive state closes the cyclone filter (20) and in the active state opens the cyclone filter (20) for the flow of oil and smoke into the cyclone filter (20).

12. The range hood (100) of claim 11, wherein the range hood is configured to,

The moving panel (30) has two panel halves (31) that cover the left and right negative pressure areas of the main body (10), respectively.

13. The range hood (100) of claim 12, wherein the range hood is configured to,

The panel halves (31) are constructed so as to be movable apart from each other; and/or

-Providing an illumination portion (50) between the panel halves (31), the panel halves (31) and the illumination portion (50) being flush in the inactive state; and/or

The moving panel (30) is arranged obliquely.

14. The range hood (100) according to any one of claims 11 to 13, characterized in that,

The moving panel (30) moves downward in a translational manner when transitioning from the inactive state to the active state.

15. The range hood (100) according to any one of claims 11 to 14, characterized in that,

The range hood (100) has an oil collection box (40) which is arranged below the movement panel (30) and can move with the movement panel (30).