CN212108547U

CN212108547U - Range hood with central air curtain

Info

Publication number: CN212108547U
Application number: CN201922467788.8U
Authority: CN
Inventors: 李永波; 邢行; 姚家前; 李智怀; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-12-08
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a range hood with a central air curtain, which comprises a smoke collecting hood and a wind box device, wherein the smoke collecting hood is provided with a smoke inlet part and a smoke guide part positioned below the smoke inlet part, the bottom of the smoke inlet part is provided with a smoke inlet area, the top of the smoke inlet part is provided with a smoke outlet, a vertical central air passage which divides the smoke guide surface into two parts is convexly arranged on the smoke guide surface on the front side of the smoke guide part, the two opposite side walls of the central air passage are rotational flow surfaces, and the central air passage is provided with at least one exhaust hole; the air box device comprises a box body and a fan assembly arranged in the box body, and an air outlet of the fan assembly is communicated with a smoke exhaust pipeline and a central air passage of the range hood respectively. The utility model discloses a range hood can form central air curtain to form the spiral air current that makes progress under the cooperation of the whirl face of bellows device and central air flue, prevent that the oil smoke diffusion from escaping, reach the high efficiency and hold together cigarette smoking effect.

Description

Range hood with central air curtain

Technical Field

The utility model relates to a range hood technical field especially relates to a range hood's rotatory smoking technique.

Background

The range hood is a main tool for collecting oil smoke in a kitchen, and how to improve the suction efficiency of the range hood is always important for the design and research of the range hood. When the traditional range hood inhales, the air suction range is a hemispherical area, and air in all directions is sucked indiscriminately. In this air suction mode, the air flow rate is larger at a position close to the air suction port, and the air flow rate is rapidly reduced at a position far away from the air suction port as the distance from the air suction port increases. Therefore, the air speed at the lowest part of the air suction port is reduced, which results in insufficient upward suction force, and the range hood is easily interfered by external factors, such as people walking, fan or cold air running, etc., and disturbed airflow factors are easily influenced, so that oil smoke or pollutants are dissipated along with the disturbed airflow, and the range hood has poor smoke collection and smoking effects.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent at least, for this reason, the utility model provides a take range hood of central air curtain, its tail gas high-usage can form unique spiral air current that makes progress, prevents that the oil smoke diffusion from escaping, reaches the high efficiency and holds together cigarette smoking effect.

According to the range hood of a central air curtain of area that above-mentioned provided, it realizes through following technical scheme:

a range hood with a central air curtain comprises a smoke collecting hood and an air box device, wherein the smoke collecting hood is provided with a smoke inlet part and a smoke guide part positioned below the smoke inlet part, the bottom of the smoke inlet part is provided with a smoke inlet area, the top of the smoke inlet part is provided with a smoke outlet, the air box device comprises a box body and a fan assembly arranged in the box body, the box body is arranged at the top of the smoke collecting hood and communicated with the smoke outlet, a vertical central air passage for dividing the smoke guide surface into two parts is convexly arranged on the smoke guide surface on the front surface of the smoke guide part, the central air passage is provided with at least one row of exhaust holes which are vertically arranged and used for exhausting air forwards, and two opposite side walls of the central air passage are rotational flow surfaces used for rotating air flow flowing through the; and the air outlet of the fan assembly is respectively communicated with the smoke exhaust pipeline of the range hood and the central air passage and is used for conveying gas to the exhaust holes.

In some embodiments, the central air passage extends from the bottom of the smoke guide portion to the bottom surface of the smoke inlet portion and divides the smoke inlet area into two parts, the side wall of the central air passage or the rotational flow surface is an inclined surface or an arc surface extending from the front surface of the smoke guide portion to the direction of the exhaust hole, and the cross sectional area of the inclined surface or the arc surface in the horizontal direction is linearly increased from bottom to top.

In some embodiments, the arc surface is curved toward the inside of the central air passage or the outside of the side wall of the central air passage, and the arc length of the arc surface in any horizontal section is a quarter of an arc.

In some embodiments, a transition surface is arranged between two opposite side walls of the central air passage, the transition surface is arranged from bottom to top and inclines forwards, and at least one row of exhaust holes which are vertically arranged and emit air forwards are arranged on the transition surface.

In some embodiments, the transition surface is a forward and outward curved arc surface, and a row of the exhaust holes which are vertically arranged and are exhausted forward are arranged on the arc surface; or the transition surface is a plane, and the left side and the right side of the plane are respectively provided with a row of exhaust holes which are vertically arranged and are exhausted forwards.

In some embodiments, the exhaust hood further comprises a ventilation duct, one end of the ventilation duct is arranged in the box body and communicated with the air outlet of the fan assembly, and the other end of the ventilation duct is arranged in the exhaust hood and communicated with the central air passage.

In some embodiments, be equipped with the opening on the air outlet lateral wall of fan subassembly, air pipe includes the air inlet section, the air inlet section set up in the box and its facing open-ended position department is equipped with the extension of outwards sticking out the extension bottom surface is equipped with the air inlet entry, the extension passes stretch into behind the opening the air outlet the inside, the air inlet entry orientation the direction of giving vent to anger of fan subassembly is arranged.

In some embodiments, the ventilation duct further includes an air outlet section disposed inside the smoke collecting cover, an air inlet outlet of the air inlet section extends downwards to the inside of the smoke collecting cover, and the air outlet section is communicated with the air inlet outlet of the air inlet section and the central air passage respectively.

In some embodiments, the central air passage has a left air supply passage and a right air supply passage which are independent from each other, and the front surfaces of the left air supply passage and the right air supply passage are respectively provided with a row of the exhaust holes which are vertically arranged and exhaust air forwards; the air-out section includes left air-out section and right air-out section independent each other, left side air-out section with left air feed way intercommunication, right air-out section with right air feed way intercommunication.

In some embodiments, a filter is disposed at the air inlet for filtering the airflow flowing into the air inlet section.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the utility model discloses a range hood, the gas that spouts from the exhaust hole of central air flue can form central air curtain to under the cooperation effect of the whirl face of bellows device, central air curtain and central air flue together, form unique spiral updraft, prevent that the oil smoke from diffusing and escaping, reach high-efficient cigarette smoke absorption effect of holding together;

2. the range hood of this embodiment, it is used for the exhaust hole air feed to central air flue through the partial air current that will flow out from the air outlet of fan subassembly, improves fan subassembly utilization ratio.

Drawings

Fig. 1 is a schematic structural diagram of a range hood in embodiment 1 of the present invention;

fig. 2 is a bottom view of the range hood in embodiment 1 of the present invention;

fig. 3 is an exploded view of the range hood according to embodiment 1 of the present invention, in which a back plate of a smoke collecting hood is hidden;

fig. 4 is a sectional view of the range hood in embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of an air intake section in embodiment 1 of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

Example 1

As shown in fig. 1-2, the range hood with the central air curtain of the embodiment includes a smoke collecting hood 1 and a wind box device 2, the smoke collecting hood 1 has a smoke inlet 11 and a smoke guide 12 located below the smoke inlet 11, the bottom of the smoke inlet 11 is provided with a smoke inlet area 111, the top of the smoke inlet is provided with a smoke outlet 112, a vertical central air passage 4 dividing the smoke guide 121 into two is convexly provided on the smoke guide 121 on the front surface of the smoke guide 12, two opposite side walls of the central air passage 4 are rotational flow surfaces 41 for rotating the air flow flowing through the central air passage, the central air passage 4 is provided with at least one row of exhaust holes 401 vertically arranged and exhausting air forward, and the air flow ejected from the exhaust holes 401 forms a central air curtain capable of driving the peripheral air flow to flow. The bellows device 2 comprises a box body 21 and a fan assembly 22, the box body 21 is arranged at the top of the fume collecting hood 1 and communicated with the fume outlet 112, the fan assembly 22 is arranged in the box body 21 and used for sucking fume and forming upward axial suction to the cyclone gas, and the gas outlet 221 of the fan assembly 22 is respectively communicated with a fume exhaust pipeline of the range hood and the central gas passage 4 and used for conveying gas to the exhaust hole 401. Preferably, the fan assembly 22 is a volute fan assembly.

When the range hood works, the fan assembly 22 of the bellows device 2 is started, and the upward axial suction force generated by the fan assembly 22 drives the external airflow and the oil smoke to flow into the smoke inlet 11 of the smoke collection cover 1 from the smoke inlet area 111, enter the fan assembly 22 through the smoke outlet 112, and then flow through the smoke exhaust pipe of the range hood from the air outlet 221 of the fan assembly 22 and exhaust the smoke out of the room. When the air current flows through the air outlet 221 of the fan component 22, part of the air current flows into the central air passage 4 and is then ejected from the exhaust holes 401, due to the gas viscosity effect, the gas ejected from the exhaust holes 401 forms a central air curtain, the oil smoke can be cut into different areas, peripheral air currents can be driven to flow together and generate radial force, the air current forms rotational flow gas under the matching action of the rotational flow surface 41, and spiral upward air current is formed under the matching of upward axial suction force generated by the fan component 22, so that the oil smoke is upwards and spirally sucked and gathered before being diffused, the oil smoke is prevented from being diffused and escaping, and the rotary smoking effect is improved.

In the range hood of the embodiment, a part of the airflow flowing out from the air outlet 221 of the fan assembly 22 is used for providing an air source for the exhaust hole 401 of the central air passage 4, so that the utilization rate of the tail gas is improved. In addition, the gas ejected from the exhaust holes 401 of the central air passage 4 can form a central air curtain, and the unique spiral upward airflow is formed by the cooperation of the air box device 2, the central air curtain and the cyclone surface 41 of the central air passage 4, so that the oil smoke is prevented from diffusing and escaping, and the effects of high-efficiency smoke collection and rotary smoking are achieved.

Specifically, the smoke guide part 12 of the smoke collecting cover 1 is located at the rear side of the bottom surface of the smoke inlet 11 and the back surfaces of the smoke inlet 11 and the smoke guide part 12 are located at the same plane, so that the smoke inlet 11 and the smoke guide part 12 form a 7 shape, and the front side of the bottom surface of the smoke inlet 11 is used for preventing smoke from escaping upwards. The smoke inlet area 111 is arranged at the front side of the bottom surface of the smoke inlet part 11 so that the upward spiral airflow flows into the smoke inlet part 11 through the smoke inlet area 111, and the smoke outlet 112 is arranged at the middle part of the top surface of the smoke inlet part 11. Preferably, the smoke inlet area 111 is formed by a plurality of smoke inlet holes 101, so that the smoke inlet area 111 can serve as an oil screen, on one hand, the oil-smoke separation effect can be achieved, on the other hand, the oil screen can be omitted, the assembly process is simplified, and the manufacturing cost is reduced.

As shown in fig. 1-2, in this embodiment, the central air passage 4 is vertically disposed at the center of the smoke guiding surface 121 on the front side of the smoke guiding portion 12 and divides the smoke guiding surface 121 into the left smoke guiding surface 121 and the right smoke guiding surface 121 which are symmetrical to each other, and the central air passage 4 extends from the bottom of the smoke guiding portion 12 toward the bottom surface of the smoke inlet portion 11 and divides the smoke inlet area 111 into two parts, so that the left smoke guiding surface 121 and the left smoke inlet area 111 correspond to a pot on the left burner of the kitchen range, and the right smoke guiding surface 121 and the right smoke inlet area 111 correspond to a pot on the right burner of the kitchen range, which facilitates to control the working state of the exhaust hole 401 of the central air passage 4 according to the specific use conditions of the left and right burners of the kitchen range, and ensures the.

Specifically, the cross-sectional area of the central air passage 4 in the horizontal direction becomes linearly larger from bottom to top. The lateral wall or the whirl face 41 of central air flue 4 is the inclined plane or the arc surface that extend towards exhaust hole 401 direction by leading cigarette portion 12 openly, and inclined plane or arc surface are the linear grow from bottom to top at the cross-sectional area of horizontal direction to make left side lead cigarette face 121 and right lead cigarette face 121 all be the linear grow from bottom to top, so under the mating reaction of central air flue 4 lateral wall or whirl face 41, make the air current form the enhancement of tornado effect, do benefit to and strengthen the rotary suction and gather together the oil smoke effect.

Preferably, the side wall or swirl surface 41 of the central air passage 4 is a circular arc surface that is curved toward the inside of the central air passage 4 or curved toward the outside of the side wall of the central air passage 4. More preferably, the side wall or the swirling surface 41 of the central air passage 4 of the present embodiment is an arc surface that is curved toward the inside of the central air passage 4, and the arc length of the arc surface at any horizontal section is a quarter of an arc, so as to ensure that the formed rotating airflow effect is optimal, and further ensure that the rotating smoking of the range hood is more efficient.

Specifically, be equipped with transition surface 42 between the relative both sides wall of center air flue 4, transition surface 42 is from lower to upper and incline forward and arrange, so is favorable to increasing the arc length of reducing arc surface in the horizontal direction cross-section, and then does benefit to reinforcing gas turning rotation effect. At least one row of exhaust holes 401 which are vertically arranged and are exhausted towards the front are arranged on the transition surface 42 so as to cut the oil smoke into at least two areas.

Preferably, the transition surface 42 of this embodiment is a plane, and the left and right sides on the plane is equipped with one row of exhaust holes 401 of vertical arrangement and giving vent to anger forward respectively, and the gas that spouts from two rows of exhaust holes 401 forms two left and right sides central air curtains, can cut the oil smoke into three regions on the one hand, on the two hand drives peripheral gas flow under the adhesion effect to form rotatory air current with the cooperation of the circular-arc whirl face 41 of reducing, the whirl effect of gas from exhaust hole 401 can be accelerated to the three aspect, reinforcing spiral upward air current intensity. In other embodiments, the transition surface 42 may also be an arc surface that is curved forward and outward, and a row of exhaust holes 401 that are vertically arranged and exit forward are disposed on the arc surface.

More preferably, the distance L between the left edge of the planar transition surface 42 and the center point of any exhaust hole 401 close to the left is less than 20mm, and the distance L between the right edge of the planar transition surface 42 and the center point of any exhaust hole 401 close to the right is less than 20mm, so that the air flow ejected from the exhaust holes 401 can form a central air curtain, and simultaneously, the air flow on the side wall (i.e., the swirling surface 41) of the central air passage 4 can be effectively driven to flow together, and further, the formed spiral upward air flow effect is optimal.

As shown in fig. 3, in the present embodiment, the center air duct 4 has the left air supply duct 43 and the right air supply duct 44 independent from each other, and the front surfaces of the left air supply duct 43 and the right air supply duct 44 are respectively provided with a row of exhaust holes 401 which are vertically arranged and which are discharged toward the front. Specifically, the left air supply passage 43 is formed by the left side of the up-down center line of an air supply chamber (not shown) having an opening on one side thereof and the planar transition surface 42 provided inside the hood 1, and the right air supply passage 44 is formed by the right side of the up-down center line of the air supply chamber having an opening on one side thereof and the planar transition surface 42 provided inside the hood 1.

As shown in fig. 3 to 5, further, a ventilation duct 6 is further included, one end of the ventilation duct 6 is disposed in the box body 21 and is communicated with the air outlet 221 of the fan assembly 22, and the other end of the ventilation duct 6 is disposed in the smoke collecting hood 1 and is respectively communicated with the left air supply duct 43 and the right air supply duct 44. Specifically, an opening 222 is arranged on the rear side wall of the air outlet 221 of the fan assembly 22, the ventilation duct 6 includes an air inlet section 61, the air inlet section 61 is arranged in the box 21 and provided with an extending portion 611 protruding outward at a position facing the opening 222, an air inlet port 6111 is arranged on the bottom surface of the extending portion 611, the extending portion 611 penetrates through the opening 222 and then extends into the air outlet 221, and the air inlet port 6111 is arranged facing the air outlet direction of the fan assembly 22, so that when the smoke upwards flows through the air outlet 221 of the fan assembly 22, part of the smoke conveniently flows through the air inlet section 61 from the air inlet port 6111 and provides an air source for the central air duct 4.

Preferably, the opening 222 is rectangular in shape to increase the unit amount of intake air. More preferably, in order to prevent the ventilation duct 6, the left air supply duct 43 and the right air supply duct 44 from being blocked by the oil smoke and causing the exhaust hole 401 to be blocked, a filter for filtering the airflow flowing into the air intake section 61 may be additionally arranged at the air intake port 6111.

Further, the ventilation duct 6 further includes an air outlet section 62 and a connecting section 63 which are arranged inside the smoke collecting cover 1, an air inlet outlet 6112 of the air inlet section 61 extends downwards to the inside of the smoke collecting cover 1, the connecting section 63 is respectively communicated with the air inlet outlet 6112 and the air outlet section 62 of the air inlet section 61, and the air outlet section 62 is respectively communicated with the left air supply duct 43 and the right air supply duct 44. Preferably, the outlet section 62 of the present embodiment includes a left outlet section and a right outlet section (not shown in the figure) independent of each other, the left outlet section is respectively communicated with the connecting section 63 and the left air supply duct 43, and the right outlet section is respectively communicated with the connecting section 63 and the right air supply duct 44.

Furthermore, in order to realize the working state of independently controlling the left central air curtain and the right central air curtain, a control valve (not shown in the figure) for controlling the on-off of the left air outlet section and the right air outlet section can be additionally arranged on the connecting section 63, so that a user can control the air outlet condition of the left air outlet section and the right air outlet section according to the use state of the left burner and the right burner of the cooker, and further the spiral upward air flow at the left side and the right side can be controlled, the use flexibility is improved, the efficient smoke collection and the energy waste avoidance are facilitated.

Example 2

The present embodiment is different from embodiment 1 in that an air supply device is further included, and the air supply device is disposed on the top or the side wall of the exhaust fume collecting cover 1, and the air supply outlet of the air supply device is communicated with the left air supply duct 43 and the right air supply duct 44 respectively, and is used for supplying air to the exhaust hole 401. Therefore, the unit air output of the exhaust holes 401 can be increased by additionally arranging the air supply device, and the rotary upward airflow strength is enhanced, so that the cigarette gathering and rotary smoking effects are improved.

Further, the number of the air supply devices is two, one of the air supply devices is installed on the left side of the top of the fume collecting hood 1, the air supply outlet of the air supply device is communicated with the left air supply channel 43, the other air supply device is installed on the right side of the top of the fume collecting hood 1, the air supply outlet of the air supply device is communicated with the right air supply channel 44, and therefore through the two air supply devices which are independent of each other, the effects of high-efficiency fume collection and rotary suction of the left side and the right side of the fume collecting hood are achieved, the range hood is.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A range hood with a central air curtain comprises a smoke collecting hood (1) and an air box device (2), wherein the smoke collecting hood (1) is provided with a smoke inlet part (11) and a smoke guide part (12) positioned below the smoke inlet part (11), a smoke inlet area (111) is arranged at the bottom of the smoke inlet part (11), a smoke outlet (112) is arranged at the top of the smoke inlet part, the air box device (2) comprises a box body (21) and a fan assembly (22) arranged in the box body (21), the box body (21) is arranged at the top of the smoke collecting hood (1) and is communicated with the smoke outlet (112), the range hood is characterized in that a vertical central air flue (4) which divides the smoke guide surface (121) into two parts is convexly arranged on the smoke guide surface (121) on the front side of the smoke guide part (12), the central air flue (4) is provided with at least one row of exhaust holes (401) which are vertically arranged and are used for leading the air flow to rotate, and the opposite two side walls of the central air flue (4) are used for leading; and an air outlet (221) of the fan assembly (22) is respectively communicated with a smoke exhaust pipeline of the range hood and the central air passage (4) and is used for conveying air to the exhaust holes (401).

2. The range hood with the central air curtain according to claim 1, wherein the central air passage (4) extends from the bottom of the smoke guide part (12) to the bottom surface of the smoke inlet part (11) and divides the smoke inlet area (111) into two parts, the side wall of the central air passage (4) or the rotational flow surface (41) is an inclined surface or an arc surface extending from the front surface of the smoke guide part (12) to the direction of the exhaust hole (401), and the cross-sectional area of the inclined surface or the arc surface in the horizontal direction is linearly increased from bottom to top.

3. The range hood with the central air curtain according to claim 2, wherein the arc surface is curved toward the inside of the central air flue (4) or the outside of the side wall of the central air flue (4), and the arc length of the arc surface in any horizontal section is a quarter of an arc.

4. The range hood with the central air curtain as claimed in claim 2, wherein a transition surface (42) is arranged between two opposite side walls of the central air duct (4), the transition surface (42) is arranged from bottom to top and inclines forwards, and at least one row of exhaust holes (401) which are vertically arranged and emit air forwards are arranged on the transition surface (42).

5. The range hood with the central air curtain as claimed in claim 4, wherein the transition surface (42) is a cambered surface which is bent forwards and outwards, and a row of exhaust holes (401) which are vertically arranged and can exhaust air forwards are arranged on the cambered surface; or the transition surface (42) is a plane, and the left side and the right side of the plane are respectively provided with a row of exhaust holes (401) which are vertically arranged and are exhausted forwards.

6. The range hood with the central air curtain according to any one of claims 1 to 5, further comprising a ventilation duct (6), wherein one end of the ventilation duct (6) is arranged in the box body (21) and communicated with the air outlet (221) of the fan assembly (22), and the other end of the ventilation duct is arranged in the smoke collection hood (1) and communicated with the central air duct (4).

7. The range hood with the central air curtain according to claim 6, wherein an opening (222) is formed in the side wall of the air outlet (221) of the fan assembly (22), the ventilation duct (6) comprises an air inlet section (61), the air inlet section (61) is arranged in the box body (21) and provided with an extension portion (611) protruding outwards at a position facing the opening (222), an air inlet opening (6111) is formed in the bottom surface of the extension portion (611), the extension portion (611) penetrates through the opening (222) and then extends into the air outlet (221), and the air inlet opening (6111) is arranged towards the air outlet direction of the fan assembly (22).

8. The range hood with the central air curtain according to claim 7, wherein the ventilation duct (6) further comprises an air outlet section (62) arranged inside the fume collecting hood (1), an air inlet outlet (6112) of the air inlet section (61) extends downwards to the inside of the fume collecting hood (1), and the air outlet section (62) is respectively communicated with the air inlet outlet (6112) of the air inlet section (61) and the central air passage (4).

9. The range hood with the central air curtain as claimed in claim 8, wherein the central air passage (4) has a left air supply passage (43) and a right air supply passage (44) which are independent of each other, and the front surfaces of the left air supply passage (43) and the right air supply passage (44) are respectively provided with a row of the exhaust holes (401) which are vertically arranged and are exhausted forwards; air-out section (62) are including independent left air-out section and right air-out section each other, left side air-out section with left air feed way (43) intercommunication, right air-out section with right air feed way (44) intercommunication.

10. The range hood with the central air curtain according to claim 7, wherein a filter for filtering the air flow flowing into the air inlet section (61) is disposed at the air inlet (6111).