CN114738811A - Table top cooking fume exhauster - Google Patents

Abstract

The invention discloses a desktop range hood, belongs to the technical field of household appliances, and is designed for solving the problems of poor oil fume treatment effect and the like of the existing desktop range hood. The table top range hood provided by the invention comprises: the top of the shell is provided with a smoke outlet; the separation assembly is detachably connected to the shell, a first flue is arranged in the separation assembly, and a pre-filtering device is arranged in the first flue; and a built-in filter element detachably arranged in the shell. The pre-filtering device of the table top range hood provided by the invention can cool the oil smoke, so that oil liquid and water drops in the oil smoke are condensed out, the smoke entering the built-in filter element only comprises solid particles but not oil liquid drops as far as possible, the maximum purification capacity and the total service life of the built-in filter element in single use are prolonged, the filtering efficiency is improved, the oil smoke is filtered more thoroughly, and the influence of the discharged smoke on the environment is reduced.

Description

Table top cooking fume exhauster

Technical Field

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

Background

The table top fume exhauster is one new type of portable fume exhauster and may be set on dining table to purify and filter fume produced during eating chafing dish or roasting meat. Compared with the traditional range hood fixedly arranged above a kitchen stove, the desktop range hood has more flexible use scene, can be used in a living room and a dining room, can purify the air in the living room and the dining room, and reduces the influence of water vapor and oil smoke on home decoration.

The existing desktop range hood generally comprises a range hood main body which is obliquely arranged, a filter screen group, an oblique flow type impeller and a motor are sequentially arranged in the range hood main body along the air flow direction, wherein the filter screen group comprises an oleophobic and hydrophobic net, a condensation net and a smell removal net.

The table-top range hood has the following defects: the filter element is arranged in a linear type, the size of the filter element which can be accommodated is small, the air flow distance is short, and the filtering effect is poor; the condensation net has no heat exchange capacity and has limited condensation effect; the condensation net has no flow guide capacity and poor water collection effect; the filtering module is not easy to disassemble and clean; the axial flow motor is mainly used as a power source, the air exhaust direction is parallel to the motor shaft, the provided air volume and air pressure are small, the oil fume suction effect is poor, and the air outlet possibly interferes with a user sitting behind the table top oil fume exhaust fan.

Disclosure of Invention

The invention aims to provide a table top range hood which prolongs the air flowing distance and has good filtering effect.

In order to achieve the purpose, the invention adopts the following technical scheme:

a table top range hood comprising: the top of the shell is provided with a smoke outlet; the separation assembly is detachably connected to the shell, a first flue is arranged in the separation assembly, and a pre-filtering device is arranged in the first flue; and a built-in filter element detachably disposed in the housing.

In a preferred embodiment, the separation assembly includes a heat dissipation frame, a front cover plate, an inner baffle plate, a separation plate and a water collection box, the heat dissipation frame, the front cover plate, the inner baffle plate and the separation plate enclose the first flue, and the water collection box is located below the first flue.

In a preferred embodiment, the separation assembly further comprises a flow guide baffle, and the flow guide baffle is obliquely arranged and is abutted to the heat dissipation frame.

In a preferred embodiment, a strip-shaped smoke inlet is formed between the drainage baffle and the top edge of the front cover plate, and the smoke inlet is communicated to the first smoke channel.

In a preferred embodiment, a strip-shaped protrusion is arranged on the surface of the drainage baffle plate facing the top edge of the front cover plate, and the extending direction of the strip-shaped protrusion is consistent with the flowing direction of the oil smoke.

In a preferred embodiment, the upper part of the front cover plate forms an inner concave structure towards the first flue.

In one preferred embodiment, the top of the inner baffle is hinged with an inner turning plate, and the inner turning plate can cut off the first flue and conduct the first flue.

In a preferred embodiment, a toothed rotating shaft is fixedly connected to the inner turning plate, the toothed rotating shaft is meshed with a rack, the rack is connected to a solenoid valve, and the solenoid valve is configured to drive the rack to move.

In one preferred embodiment, a water sensor is arranged in the water collecting box and connected to a socket on the shell through a plug.

In a preferred embodiment, the table top range hood further includes a centrifugal fan disposed in the housing, and the centrifugal fan is configured to discharge the oil smoke from the smoke discharge port after passing through the first flue and the built-in filter element.

The table top range hood provided by the invention comprises a separation component, wherein a pre-filtering device is arranged in a first flue of the separation component, and can cool oil smoke, so that oil liquid and water drops in the oil smoke are condensed out, the smoke entering a built-in filter element only comprises solid particles but not oil water drops as much as possible, the maximum purification capacity of single use of the built-in filter element is prolonged, the total service life of the built-in filter element is prolonged, the filtering efficiency is improved, the oil smoke is filtered more thoroughly, and the influence of the discharged smoke on the environment is reduced. The separating component is detachably connected to the shell, so that the pre-filtering device can be cleaned or replaced in time, the use cost is reduced, the use is more convenient, and the structure is more compact. The arrangement of the first flue prolongs the flue, more filtering structures can be arranged on the way of oil smoke flowing through, and the filtering effect is better.

Drawings

Fig. 1 is a schematic structural diagram of a table-top range hood provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a table top range hood provided in accordance with an embodiment of the present invention;

fig. 3 is an exploded view of a table top range hood according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a separator assembly according to an embodiment of the present invention;

FIG. 5 is an exploded view of a separation assembly provided in accordance with an embodiment of the present invention;

fig. 6 shows two air inlet channels of the table top range hood according to the embodiment of the present invention.

In the figure:

1. a housing; 2. a separation assembly; 3. a filter element is arranged in the filter; 4. a centrifugal fan; 5. a fan bracket; 7. a first flue; 11. a smoke outlet; 21. a heat dissipation frame; 22. a front cover plate; 23. an inner baffle; 24. a separator plate; 25. a water collection box; 26. a drainage baffle; 27. a smoke inlet; 28. a pre-filtration device; 29. buckling; 221. a concave structure; 231. an inner turning plate; 232. a rotating shaft with teeth; 233. a rack; 234. an electromagnetic valve; 251. a plug; 261. and (5) strip-shaped bulges.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The embodiment provides a table top range hood which can be placed on a dining table or other oil smoke generating positions and used for purifying oil smoke. As shown in fig. 1 to 5, the table top range hood includes a housing 1, a separation assembly 2, a built-in filter element 3 and a centrifugal fan 4.

A smoke discharge port 11 is provided at the top of the housing 1 for discharging the purified air substantially vertically upward. Compare in current desktop range hood adopts the structure of rear air-out or oblique rear air-out, the mode of top air-out more is suitable for many people to enclose the condition of sitting the dining table and having a dinner, no matter which position department that the user sat around the dining table can not spout by the air-out, and user uses and experiences better. The smoke outlet 11 is higher than the oil smoke generating area, and the rapidly discharged airflow has a traction effect on the surrounding air, so that the newly generated oil smoke can enter the table top range hood easily.

Be provided with first flue 7 in the separator assembly 2, be provided with in the first flue 7 and filter equipment 28 in advance, filter equipment 28 can make the oil smoke cooling in advance to make fluid and the water droplet in the oil smoke condense out, let the flue gas that gets into built-in filter core 3 only include solid particle and do not include oil water liquid droplet as far as possible, thereby prolong 3 single maximum purification ability of single use of built-in filter core and total life, promote filtration efficiency, the oil smoke filters more thoroughly, has reduced the influence of outer row's flue gas to the environment. The separating component 2 is detachably connected to the shell 1, the pre-filtering device 28 can be cleaned or replaced in time, the use cost is reduced, the use is more convenient, and the structure is more compact. The arrangement of the first flue 7 prolongs the flue, more filtering structures can be arranged on the way of oil smoke flowing through, and the filtering effect is better.

The built-in filter element 3 is detachably arranged in the shell 1, and once the filtering capacity is reduced, the built-in filter element 3 can be replaced with a new one or the built-in filter element 3 is cleaned, so that the table-top range hood is ensured to have good oil smoke treatment capacity. The specific installation position of the built-in filter element 3 is not limited, and the built-in filter element can be any suitable position close to the centrifugal fan 4 in the shell 1, so that the disassembly and the assembly are convenient, and the smoke can be thoroughly filtered. The specific material of the built-in filter element 3 is not limited, and can be, but not limited to, a HEPA filter element, which can remove particle dust and various suspended matters in the air.

The centrifugal fan 4 may be, but not limited to, fixedly installed in the housing 1 through the fan bracket 5, so that the centrifugal fan 4 can be stably installed. When the centrifugal fan 4 works, the air can be driven to flow, the arrow in fig. 2 indicates the direction of the air flow, the oil smoke is sucked into the first flue 7 along with the air flow, and the oil smoke passes through the pre-filtering device 28 to remove oil drops and water drops, so that the basically dry smoke is formed; the smoke continues to reach the built-in filter element 3 along with the airflow, the smoke passing through the built-in filter element 3 is basically clean, and then the smoke is discharged from the smoke outlet 11, so that the oil smoke purification treatment is completed.

The air volume and the air pressure of the centrifugal fan 4 are higher than those of the axial flow motor, and the table top range hood provided with the centrifugal fan 4 has larger air extraction capacity and can treat oil smoke in a larger range. The centrifugal fan 4 can change the direction of air flow, the basically horizontally sucked oil smoke can be basically and vertically sprayed out from the top of the table top range hood after being processed, a user can sit around the table top range hood without worrying about being sprayed out, and the use is more convenient. The oil smoke treatment mode that pre-filter 28 and built-in filter core 3 made up has prolonged built-in filter core 3 single use duration, satisfies the long-time demand of using of user, has promoted user's use and has experienced.

A volute (not shown) can be installed in the housing 1, the shape design of the volute is utilized to assist in changing the air outlet angle of the centrifugal fan 4, the influence of the air outlet direction on the oil smoke entering the first flue 7 is reduced, and the oil smoke absorption effect of the table top range hood is improved. The built-in filter element 3 can be arranged on the volute and is closer to the centrifugal fan 4, the air flow is more stable and powerful, and the filtering effect on the smoke is better.

As shown in fig. 4 and 5, the separation assembly 2 includes a heat dissipation frame 21, a front cover plate 22, an inner baffle plate 23, a partition plate 24, and a water collection box 25, the heat dissipation frame 21, the front cover plate 22, the inner baffle plate 23, and the partition plate 24 together enclose the first flue 7, and the water collection box 25 is located below the first flue 7.

The heat dissipation frame 21 is provided with a buckle 29, the whole separation assembly 2 can be detached from the shell 1 by pressing the buckle 29, the disassembly and the assembly are convenient, and the pre-filtering device 28 is convenient to clean or replace. The oil smoke enters from the upper part of the first flue 7 and passes through the pre-filtering device 28 from top to bottom; the bottom of the inner baffle 23 is provided with a through hole, and the flue gas passing through the pre-filtering device 28 passes through the through hole and then leaves the first flue 7 to reach the space where the built-in filter element 3 is located, and waits for being purified by the built-in filter element 3.

When contacting the heat dissipation frame 21, the front cover plate 22, the inner baffle 23 and the isolation plate 24, especially when passing through the pre-filtering device 28, the oil smoke exchanges heat with the above devices, the oil smoke condenses oil drops and water drops into water vapor because of temperature reduction, the oil drops and the water drops drop into the water collection box 25 below under the action of self weight, and a user can intensively clean the oil smoke. The radiating frame 21, the front cover plate 22, the inner baffle plate 23, the isolation plate 24, the water collecting box 25 and the pre-filtering device 28 are preferably made of waterproof materials, can be directly soaked and cleaned and can be repeatedly used, and the oil smoke purification cost is reduced.

Grooves are formed in the left side, the right side and the upper portion of the heat dissipation frame 21, and the surface area of the heat dissipation frame 21 is increased due to the groove structure, so that the contact area with air is increased, and the heat dissipation effect is better; the grooves on the upper part are deeper than the grooves on the two sides, so that the cold air and the hot air can form diffusion movement, the air convection is accelerated, and the heat exchange efficiency is improved.

In order to facilitate oil drops and water drops to fall into the water collecting box 25, two through holes with different sizes are formed at the bottom of the heat dissipation frame 21. The through holes are positioned right above the water collecting box 25, and oil drops and water drops can fall into the water collecting box 25 after passing through the through holes, so that the oil drops and the water drops are prevented from scattering at other positions in the separating assembly 2.

On the basis of the structure, the separating assembly 2 further comprises a drainage baffle 26, and the drainage baffle 26 is obliquely arranged and is abutted to the heat dissipation frame 21. An inclined included angle is formed between the drainage baffle 26 and the horizontal plane, so that the flow speed of rising oil smoke is obviously reduced after the rising oil smoke collides with the drainage baffle 26, and the rising oil smoke is prevented from continuing to rise. When the centrifugal fan 4 is started, an air flow is generated, and the oil smoke blocked at the drainage baffle 26 enters the first flue 7 along with the air flow. The air on the upper part and two sides of the flow guide baffle 26 can enter the first flue 7 along with the airflow to form air supplement, so that negative pressure expansion is realized. The air supplement has a traction effect on rising oil smoke, so that the oil smoke is prevented from diffusing and escaping to two sides, and the oil smoke absorption effect is improved.

In addition, the drainage baffle 26 arranged obliquely leaves more space for the heat dissipation frame 21, which is beneficial to increasing the area of the heat dissipation frame 21 and improving the heat dissipation effect. The drainage baffle 26 is abutted with the heat dissipation frame 21, so that the heat exchange efficiency between the drainage baffle 26 and the heat dissipation frame 21 is improved, the oil smoke temperature is favorably and quickly reduced, and the condensation of oil drops and water drops is accelerated. When a part of the oil smoke condenses out oil drops and water drops when contacting the drainage baffle 26, the oil drops and the water drops can slide down along the inclined drainage baffle 26 to enter the first flue 7 and then fall into the water collecting box 25 below the first flue 7.

A strip-shaped smoke inlet 27 is formed between the drainage baffle 26 and the top edge of the front cover plate 22, and the smoke inlet 27 is communicated with the first smoke channel 7. The narrow strip-shaped smoke inlet 27 forms negative pressure, which is beneficial to improving the initial flow velocity when the oil smoke enters the first flue 7, so that more oil smoke nearby can be driven to enter the smoke inlet 27, the oil smoke can be prevented from escaping towards the top and two sides when the air is supplemented by the outside air, and the oil smoke treatment capacity is stronger.

The surface of the diversion baffle 26 facing the top edge of the front cover plate 22 is provided with a strip-shaped bulge 261, and the extending direction of the strip-shaped bulge 261 is consistent with the flowing direction of the smoke. The strip-shaped bulges 261 have a flow stabilizing effect on passing air, so that oil smoke is prevented from escaping. Moreover, the strip-shaped protrusions 261 increase the surface area of the drainage baffle 26, increase the contact area between the drainage baffle 26 and the oil smoke, and the drainage baffle 26 absorbs the heat in the oil smoke and transfers the heat to the heat dissipation frame 21. The oil smoke after cooling is easier to condense oil drops and water drops, and the oil drops and the water drops slide down along the strip-shaped bulges 261 to enter the first flue 7, so that the oil smoke is convenient to collect. The strip-shaped protrusions 261 are preferably made of aluminum alloy materials, so that the heat exchange efficiency is higher, the cleaning is easier, the manufacturing cost is low, the weight is light, and the carrying is convenient.

In order to make the oil smoke enter the smoke inlet 27 smoothly and thoroughly, the upper part of the front cover plate 22 is formed with an inner concave structure 221 toward the first smoke channel 7. According to the epitopic effect, when the gas rapidly passes through the surface of the object, the gas flow flows along the surface of the object. The concave structure 221 has a traction and adsorption effect on the rapidly rising oil smoke, so that the oil smoke rapidly reaches the smoke inlet 27 along the concave structure 221, and the oil smoke is prevented from escaping in a scattered manner.

On the basis of the structure, the top of the inner baffle plate 23 is hinged with an inner turning plate 231, and the inner turning plate 231 can cut off the first flue 7 and conduct the first flue 7. The inner baffle 23 and the inner flap 231 divide the heat dissipating frame 21 into a front space and a rear space, and the side having the pre-filter 28 is a front space. The inner flap 231 preferably has a planar surface on one side and an inwardly concave arcuate surface on the opposite side.

A toothed rotating shaft 232 is fixedly connected to the inner turning plate 231, the toothed rotating shaft 232 is meshed with a rack 233, the rack 233 is connected to a solenoid valve 234, and the solenoid valve 234 is configured to drive the rack 233 to move. The on-off of the solenoid valve 234 can drive the rack 233 to move up and down along the vertical direction, and the moving distance of the rack 233 is controllable. The moving rack 233 can drive the toothed rotating shaft 232 to rotate, and the inward-turning plate 231 can synchronously rotate along with the toothed rotating shaft 232. Therefore, the electromagnetic valve 234 can drive the inner turnover plate 231 to swing, and the swing angle can be controlled.

When the electromagnetic valve 234 is not energized, the inward turning plate 231 is in a vertical state, and the first flue 7 is conducted, as shown in the drawing on the right side in fig. 6, an air inlet channel is formed by the arc-shaped surface of the inward turning plate 231 and the flow guide baffle 26, and the oil smoke flows in the direction indicated by the arrow and completely enters the first flue 7. When the electromagnetic valve 234 is energized, the inward turning plate 231 swings to the left side to block the upper part of the first flue 7, as shown in the left drawing in fig. 6, the plane of the inward turning plate 231 and the extension line of the top plane of the front cover plate 22 form an air inlet channel, the oil smoke flows in the direction indicated by the arrow, and the oil smoke does not enter the first flue 7 any more.

As shown in fig. 3, a water sensor (not shown) is provided in the water collection box 25, and a plug 251 is provided on an outer wall of the water collection box 25, and the water sensor is connected to a socket on the housing 1 through the plug 251. The water sensor is arranged at the highest water level in the water collecting box 25, and after the water sensor sends out a detection signal, the water quantity in the water collecting box 25 is proved to reach the highest water level.

When the water sensor is used, when the water sensor detects that the water amount in the water collecting box 25 reaches the highest water level, the water sensor releases a highest water level signal. The electromagnetic valve 234 drives the rack 233 to move in the vertical direction after receiving the highest water level signal, the moving rack 233 drives the toothed rotating shaft 232 to rotate, and the inward-turning plate 231 synchronously rotates along with the toothed rotating shaft 232 to switch an air inlet channel. The oil smoke no longer enters the first flue 7, and no new oil drops and water drops are generated, so that the water flow in the water collecting box 25 cannot overflow, and a user can conveniently take down the water collecting box 25 and clean the liquid in the water collecting box. At this time, the oil smoke directly enters the space behind the inner baffle 23 and the inner turning plate 231, and then is discharged after passing through the built-in filter element 3.

The centrifugal fan 4 can also select to stop working according to the highest water level signal, so that the oil smoke is prevented from directly reaching the built-in filter element 3, and the oil and water in the oil smoke are prevented from reducing the filtering capacity of the built-in filter element 3.

There is another way of use in which the user takes the sump case 25 off when the water sensor detects that the amount of water in the sump case 25 reaches the maximum level. The plug 251 disengages from the socket and the water sensor releases the disengage signal. The electromagnetic valve 234 receives the disengagement signal and then controls the inner turning plate 231 to swing to switch the air inlet channel. Similarly, the oil smoke no longer enters the first flue 7, and no new oil drops and water drops are generated, so that pollution caused by the fact that the oil drops and the water drops fall on a dining table or other positions due to the fact that the water collecting box 25 is moved out is avoided. The disengaging signal can also control the centrifugal fan 4 to stop working.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A table top range hood, characterized by, includes:

the top of the shell (1) is provided with a smoke outlet (11);

the separation assembly (2) is detachably connected to the shell (1), a first flue (7) is arranged in the separation assembly (2), and a pre-filtering device (28) is arranged in the first flue (7); and the number of the first and second groups,

a built-in filter element (3) detachably arranged in the housing (1).

2. The table top range hood according to claim 1, wherein the separation assembly (2) comprises a heat dissipation frame (21), a front cover plate (22), an inner baffle plate (23), a partition plate (24) and a water collection box (25), the heat dissipation frame (21), the front cover plate (22), the inner baffle plate (23) and the partition plate (24) enclose the first flue (7), and the water collection box (25) is located below the first flue (7).

3. The table-top range hood according to claim 2, wherein the separation assembly (2) further comprises a flow guide baffle (26), and the flow guide baffle (26) is obliquely arranged and is abutted against the heat dissipation frame (21).

4. The table-top range hood according to claim 3, wherein a strip-shaped smoke inlet (27) is formed between the flow guide baffle (26) and the top edge of the front cover plate (22), and the smoke inlet (27) is communicated to the first smoke channel (7).

5. The table-top range hood according to claim 3, wherein a strip-shaped protrusion (261) is arranged on the surface of the flow guide baffle (26) facing the top edge of the front cover plate (22), and the extending direction of the strip-shaped protrusion (261) is consistent with the flowing direction of the oil smoke.

6. The table top range hood according to claim 2, wherein the upper portion of the front cover plate (22) forms an inner concave structure (221) towards the first flue (7).

7. The table top range hood according to claim 2, wherein an inner turning plate (231) is hinged to the top of the inner baffle (23), and the inner turning plate (231) can cut off the first flue (7) and conduct the first flue (7).

8. The table-top range hood according to claim 7, wherein a toothed rotating shaft (232) is fixedly connected to the inner turning plate (231), the toothed rotating shaft (232) is meshed with a rack (233), the rack (233) is connected to a solenoid valve (234), and the solenoid valve (234) is configured to drive the rack (233) to move.

9. The table top range hood according to claim 2, wherein a water sensor is arranged in the water collection box (25) and connected to a socket on the housing (1) through a plug (251).

10. The table top range hood according to any one of claims 1-9, further comprising a centrifugal fan (4), wherein the centrifugal fan (4) is disposed in the housing (1), and the centrifugal fan (4) is configured to discharge the oil smoke from the smoke discharge port (11) after passing through the first flue (7) and the built-in filter element (3).

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