CN219222534U

CN219222534U - Fume exhauster

Info

Publication number: CN219222534U
Application number: CN202222536355.5U
Authority: CN
Inventors: 叶冯旭; 卢登; 徐志能
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-06-20
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses a range hood, which comprises: the shell comprises a top plate, a bottom plate and side plates connected between the top plate and the bottom plate; the bottom plate is provided with an air inlet; the centrifugal fan is arranged in the shell, the volute is provided with an air suction port and an air exhaust port, and the air suction port is opposite to the air inlet of the bottom plate; the front filtering device is arranged at the upstream of the volute air suction port along the oil smoke flow path; the method is characterized in that: an air outlet is formed in a corresponding position on the side plate opposite to the air outlet of the volute; further comprises: the rear filter device is arranged in the shell and is positioned on a smoke flow path between the air outlet of the volute and the air outlet of the shell. The utility model improves the smoke discharging efficiency of the range hood; the rear-mounted filter device is arranged between the air outlet of the volute and the air outlet of the shell, so that the filtering effect of oil smoke is improved, and purified smoke can be directly discharged indoors, and the device is particularly suitable for occasions lacking an outward smoke discharging channel.

Description

Fume exhauster

Technical Field

The utility model relates to a lampblack purifying device, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen appliances in modern families. The centrifugal fan is arranged in the shell and comprises a volute, an impeller arranged in the volute and a motor for driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated at the center of the centrifugal fan, and oil smoke below the range hood is sucked into the fan and is collected by the volute after being accelerated by the fan to be guided and discharged.

In order to purify the oil smoke, a pre-filtering device is generally arranged at the upstream of the air inlet of the volute along the flow path of the oil smoke in the machine, and the air outlet of the volute is directly connected with a smoke pipe to be discharged to the outdoor or central flue without arranging a post-filtering device. Therefore, after long-term use, the filtering effect of the pre-positioned filtering device is reduced, and the gas exhausted from the air outlet of the volute still has a lot of oil smoke residues, so that the filtering device is not suitable for being applied to indoor occasions lacking an outward smoke exhaust channel.

Meanwhile, indoor occasions lacking an outward smoke exhaust channel often have limited clear height (such as a garage), and a range hood vertically arranged by a centrifugal fan cannot be normally installed.

The utility model of China with publication number CN109405027A (201811555449.9) discloses an internal circulation smoke machine, which comprises a box body and a fan assembly arranged in the box body, wherein an internal circulation outlet is arranged on the box body and is arranged at the top of the box body, the axis of a centrifugal fan (fan assembly) is vertically arranged to ensure the flattening arrangement of the smoke machine, air can be introduced from the bottom of the box body, the centrifugal fan can enable air flow to generate centrifugal force, and oil drops in smoke are easier to throw out under the action of the centrifugal force, so that the oil removing effect is exerted. In order to reduce the problem of scattered flue gas, the inner circulation outlet is provided with an air outlet air guide piece, the air guide piece comprises a fan outlet flow guide plate and an inner circulation outlet flow guide plate, and the smoke machine finishes flow guide and guide of the airflow at the outlet of the volute by the fan outlet flow guide plate, the inner circulation outlet flow guide plate and the like, so that the airflow entering the volute flows out from the inner circulation outlet on the box body. In the utility model, the air guide piece can reduce the scattering of the smoke from the volute outlet to the internal circulation outlet, but the internal circulation outlet is arranged at the top of the box body, and the air flow flowing out of the centrifugal fan along the horizontal direction is upwards discharged after being turned for 90 degrees, so that the smoke loss exists and the smoke discharging effect is influenced; in addition, in order to be favorable to the top of flue gas from the box to discharge, at least some box need expose in the bottom of cupboard or need have certain clearance between box and the bottom of cupboard, no matter what kind of mode has been adopted, has all increased the installation space of cigarette machine, and easily makes the cupboard of top wet.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide the range hood capable of achieving both smoke discharging efficiency and filtering effect.

The second technical problem to be solved by the utility model is to provide a range hood suitable for indoor occasions lacking an outward smoke exhaust channel.

The third technical problem to be solved by the utility model is to provide the internal circulation thin type range hood with high smoke discharging efficiency and low noise.

The utility model solves the first technical problem by adopting the technical scheme that: a range hood, comprising:

the shell comprises a top plate, a bottom plate and side plates connected between the top plate and the bottom plate; the bottom plate is provided with an air inlet;

the centrifugal fan is arranged in the shell, the volute is provided with an air suction port and an air exhaust port, and the air suction port is opposite to the air inlet of the bottom plate;

the front filtering device is arranged at the upstream of the volute air suction port along the oil smoke flow path;

the method is characterized in that: an air outlet is formed in a corresponding position on the side plate opposite to the air outlet of the volute; further comprises:

the rear filter device is arranged in the shell and is positioned on a smoke flow path between the air outlet of the volute and the air outlet of the shell.

The utility model solves the second technical problem by adopting the technical proposal that: the shell air outlet is in fluid communication with the indoor space.

Preferably, the side plates have a height smaller than the depth thereof and also smaller than the width of the top plate, so that the whole housing is flat.

The utility model solves the second technical problem by adopting the technical proposal that: the novel smoke guide pipe is characterized by further comprising a smoke guide pipe, one end of the smoke guide pipe is communicated with an air outlet of the volute, the other end of the smoke guide pipe is communicated with an air outlet of the bottom plate, and the rear filter device is arranged in the smoke guide pipe. The fume guiding pipe is used for guiding fume exhausted from the fume exhaust port and exhausting fume smoothly from the fume exhaust port, so that noise of the fume exhaust fan is lowered, and the fume can contact with the filter sufficiently to raise fume filtering and purifying efficiency.

Further, as the preference, lead the tobacco pipe and include being used for from the air exit to the expansion section of air outlet fluid deceleration at least, the fluid flow area of expansion section low reaches is greater than the fluid flow area of expansion section high reaches, so does benefit to the oil smoke and discharges steadily from the air outlet, reduces the impact force of oil smoke, avoids the gas impact head or influences cooking utensils flame.

Preferably, the smoke guide pipe further comprises a flow guide section connected with the flow expansion section, the flow expansion section is connected to an air outlet of the volute, the flow guide section is connected to an air outlet of the casing, the rear filter device is arranged in the flow guide section, and smooth oil smoke can fully contact with the rear filter device in the flow guide section, so that the filtering efficiency of the rear filter device is improved.

In order to be favorable for guiding the discharge direction of the filtered flue gas, as the optimization, the port of the flow guiding section close to the air outlet of the bottom plate is detachably connected with an air guiding grid.

In order to facilitate the adjustment of the discharge direction of the filtered flue gas, preferably, the air guide grid comprises:

the fixed frame is detachably connected to the port of the flow guide section, which is close to the air outlet;

at least one smoke guide plate, two ends of each smoke guide plate can be rotatably arranged at two sides of the fixing frame.

In order to avoid the dirty oil filtered by the rear filter device from being discharged from the air outlet, preferably, the smoke guide pipe is inclined upwards from the air outlet to the air outlet.

For facilitating the replacement of the rear-mounted filtering device and being easy to adapt to different installation environments, the side plate comprises a front side plate, and the air outlet is formed in the front side plate and extends along the left-right direction.

In order to facilitate the smooth suction of the oil smoke into the air suction port, preferably, a smoke guide plate is arranged below the shell and is positioned below the air inlet; the smoke guide plate includes a central region with a central upward depression, and a peripheral region located at the periphery of the central region.

In order to facilitate the collection of the oil thrown off by the centrifugal fan, preferably, the smoke guide plate is gradually inclined downwards from front to back, and the rear side of the smoke guide plate protrudes downwards to form an oil collecting groove.

Compared with the prior art, the utility model has the advantages that: the bottom plate of the shell is provided with an air inlet, and the air inlet of the volute is opposite to the air inlet of the bottom plate, so that the suction path of the oil smoke is shortened, and the direct suction of the oil smoke is realized; the air outlet of the side plate is opposite to the air outlet of the volute, so that the exhaust path of the oil smoke is shortened, the direct exhaust of the oil smoke is realized, and the design mode improves the exhaust efficiency of the range hood; the rear-mounted filter device is arranged between the air outlet of the volute and the air outlet of the shell, and after the oil fume is preliminarily filtered by the front-mounted filter device, the oil fume is further filtered by the rear-mounted filter device, so that the filtering effect of the oil fume is improved, and the purified oil fume can be directly discharged indoors and is particularly suitable for occasions lacking an outward fume discharging channel.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of another view according to an embodiment of the present utility model.

Fig. 3 is an exploded view of an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a smoke guide tube according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of an embodiment of the present utility model.

Fig. 6 is a schematic structural diagram of a smoke guide plate according to an embodiment of the present utility model.

Fig. 7 is a schematic structural diagram of a housing according to an embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Referring to fig. 1 to 7, there is shown a preferred embodiment of the present utility model, which comprises a housing 1, a centrifugal fan 2, a pre-filter 8, a post-filter 3, a smoke guide tube 4, a wind guide grill 5, and a smoke guide plate 7.

The housing 1 includes a top plate 1a, a bottom plate 1b, and a side plate 1c connected between the top plate 1a and the bottom plate 1 b; the side plate 1c includes a front side plate 1c1, a rear side plate opposed to the front side plate 1c1, and left and right side plates disposed opposed to each other. The side plate 1c has a height smaller than the depth thereof and also smaller than the width of the top plate 1a, so that the entire housing 1 is flat. The bottom plate 1b is provided with an air inlet 11; the front side plate 1c1 is provided with an air outlet 12, and extends in the left-right direction, and the air outlet 12 is in fluid communication with the indoor space.

The centrifugal fan 2 is arranged horizontally in the housing 1, and comprises a volute 21 and an impeller 22. The scroll 21 has an air intake 211 and an air outlet 212, the air intake 211 being opposite to the air intake 121 of the bottom plate 1b, and the air outlet 212 being opposite to the air outlet 12 of the front side plate 1c 1. The impeller 22 is disposed within the volute 21. The prefilter device 8 is connected to the volute inlet 211.

The smoke guide pipe 4 comprises a flow expansion section 41 and a flow guide section 42, the flow guide section 42 is connected with the flow expansion section 41, the flow expansion section 41 is connected to the air outlet 212 of the volute 21, the flow guide section 42 is connected to the air outlet 12 of the housing 1, and the smoke guide pipe 4 is inclined upwards from the air outlet 212 to the air outlet 12. The post-filter device 3 is arranged in the flow guiding section 42. The expansion section 41 is used for expanding the flow section 41 for reducing the flow speed of the fluid from the air outlet 212 to the air outlet 12, and the flow area of the fluid at the downstream of the expansion section 41 is larger than the flow area of the fluid at the upstream of the expansion section 41.

The air guide grating 5 comprises a fixed frame 51 and a smoke guide plate 52, and the fixed frame 51 is detachably connected to the port of the air guide section 42, which is close to the air outlet 12; the number of the smoke guide plates 52 is plural (three or more), and the smoke guide plates are arranged at intervals along the height direction of the air outlet 12, and both ends of each smoke guide plate 52 are rotatably arranged at both sides of the fixing frame 51.

The smoke guide plate 7 is arranged below the shell 1 and below the air inlet 11; the smoke-guiding plate 7 comprises a central region 71 recessed centrally upwardly, and a peripheral region 72 located at the periphery of the central region 71. The smoke guide 7 is gradually inclined downward from front to back, and the rear side of the smoke guide 7 protrudes downward to form the oil sump 73.

The range hood of this embodiment is whole to be flat, can wholly install in the below of cupboard, and occupation kitchen space is few. The air suction opening 211 of the volute 21 is opposite to the air inlet 121 of the bottom plate 1b, the air outlet 212 is opposite to the air outlet 12 of the front side plate 1c1, and the direct suction and direct discharge of the lampblack are realized, so that the smoking efficiency of the range hood is improved. The air outlet 12 is forward, which is favorable for the replacement of the post-filter device 3, and the smoke purified by the post-filter device 3 can be directly discharged into a room, thus being particularly suitable for the occasion lacking an outward smoke discharging channel.

Claims

1. A range hood, comprising:

a housing (1) including a top plate (1 a), a bottom plate (1 b), and a side plate (1 c) connected between the top plate (1 a) and the bottom plate (1 b); the bottom plate (1 b) is provided with an air inlet (11);

the centrifugal fan (2) is arranged in the shell (1), the volute (21) of the centrifugal fan is provided with an air suction inlet (211) and an air exhaust outlet (212), and the air suction inlet (211) is opposite to the bottom plate air inlet (121);

a pre-filter device (8) arranged along the fume flow path and upstream of the volute suction port (211);

the method is characterized in that: an air outlet (12) is formed at a corresponding position on a side plate (1 c) opposite to the volute air outlet (212); further comprises:

the rear-mounted filtering device (3) is arranged in the shell (1) and is positioned on a flue gas flow path between the volute exhaust outlet (212) and the shell air outlet (12).

2. The range hood of claim 1, wherein: the shell air outlet (12) is in fluid communication with the indoor space.

3. The range hood of claim 2, wherein: the side plates (1 c) have a height smaller than the depth thereof and also smaller than the width of the top plate (1 a), so that the whole housing (1) is flat.

4. A range hood according to claim 1, 2 or 3, wherein: the novel smoke guide pipe is characterized by further comprising a smoke guide pipe (4), one end of the smoke guide pipe (4) is communicated with an air outlet (212) of the volute (21), the other end of the smoke guide pipe is communicated with an air outlet (12) of the bottom plate (1 b), and the rear-mounted filtering device (3) is arranged in the smoke guide pipe (4).

5. The range hood of claim 4, wherein: the smoke guide pipe (4) at least comprises a flow expansion section (41) for reducing the flow speed of the fluid from the air outlet (212) to the air outlet (12), and the flow area of the fluid at the downstream of the flow expansion section (41) is larger than the flow area of the fluid at the upstream of the flow expansion section (41).

6. The range hood of claim 5, wherein: the smoke guide pipe (4) further comprises a flow guide section (42) connected with the flow expansion section (41), the flow expansion section (41) is connected to an air outlet (212) of the volute (21), the flow guide section (42) is connected to an air outlet (12) of the shell (1), and the rear filtering device (3) is arranged in the flow guide section (42).

7. The range hood of claim 6, wherein: the port of the diversion section (42) close to the air outlet (12) of the bottom plate (1 b) is detachably connected with a guide grating (5).

8. The range hood of claim 7, wherein: the air guide grille (5) comprises:

the fixed frame (51) is detachably connected to the port of the diversion section (42) close to the air outlet (12);

at least one smoke guide plate (52), and two ends of each smoke guide plate (52) are rotatably arranged at two sides of the fixed frame (51).

9. The range hood according to claim 4, wherein the smoke guide pipe (4) is inclined upward from the air outlet (212) toward the air outlet (12).

10. The range hood of claim 1, wherein: the side plate (1 c) comprises a front side plate (1 c 1), and the air outlet (12) is formed in the front side plate (1 c 1) and extends along the left-right direction.

11. A range hood according to claim 1, 2 or 3, wherein: a smoke guide plate (7) is arranged below the shell (1), and the smoke guide plate (7) is positioned below the air inlet (11); the smoke-guiding plate (7) comprises a central region (71) with a central upward depression, and a peripheral region (72) located at the periphery of the central region (71).

12. The range hood of claim 11, wherein: the smoke guide plate (7) gradually inclines downwards from front to back, and the rear side of the smoke guide plate (7) protrudes downwards to form an oil collecting groove (73).