CN114763917A

CN114763917A - Fume exhaust fan

Info

Publication number: CN114763917A
Application number: CN202110029056.XA
Authority: CN
Inventors: 黄友根; 王曼; 杨伟刚; 李斌
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2022-07-19
Anticipated expiration: 2041-01-11
Also published as: CN114763917B

Abstract

The invention discloses a range hood, which comprises a hollow box body and a fan system, wherein the box body comprises a left side plate and a right side plate, a first air inlet is formed in the left side plate, a second air inlet is formed in the right side plate, the fan system is arranged in the box body, the fan system is provided with two fans which are arranged left and right to form a parallel double fan, each fan system is provided with a fan air inlet, the fan air inlet of the fan system positioned on the left side is opposite to the first air inlet, and the fan air inlet of the fan system positioned on the right side is opposite to the second air inlet. Compared with the prior art, the invention has the advantages that: the fan system is arranged below and is right opposite to the air inlet of the box body, so that direct suction is realized, the space of an upper fan frame is saved, the whole oil fume flow path is simple, the flow loss caused by a long air channel is not needed to be overcome, the idle work of the power system is increased, meanwhile, the structure is compact, the space of an upper cabinet can be saved, the oil fume suction effect is ensured, and the cooking operation experience of a user is not influenced.

Description

Cooking fume exhauster

Technical Field

The invention relates to an oil fume purification device, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

Range hoods are generally classified into a top suction type, a side suction type and a low suction type. The top-suction type range hood adopts an oil smoke rising principle, generates a negative pressure area right above a cooking bench, sucks and exhausts oil smoke which is generated naturally during cooking, has the advantages of fashionable and concise appearance, larger air volume, suitability for larger space, capability of capturing the oil smoke far away from the cooking bench, and the defect that the installation height is far away from the cooking bench, and the oil smoke above a pot is easy to cause the oil smoke to escape to the periphery due to the disturbance generated by ambient air under the cooking state with small oil smoke volume, thus leading to poor oil smoke suction effect.

The side-suction type and low-suction type range hoods adopt a mode that an air inlet moves downwards, although the air inlet moves downwards, a fan frame is still in a cabinet, and meanwhile, the air inlet is fixed, so that the range hood cannot meet the range hood suction effect under the cooking condition of a double-stove. The existing side-draught range hood has the defects that although the air inlet of the range hood is overlapped with the air inlet of a fan system, when a left cooking range and a right cooking range are cooked simultaneously, oil smoke gas flows on the left side and the right side interfere with each other, and meanwhile, the smoke blocking plates are mainly used for blocking smoke on the front side, so that the smoke blocking capacity on the left side and the right side is insufficient.

In order to satisfy the cooking environment of double-range, the existing range hood, such as the range hood with the arc-shaped exhaust outlet disclosed in the chinese patent with the application number of 200420082355.1, comprises a shell, a fan and a smoke collecting hood, and is characterized in that: the smoke collecting cover extends to the side face along the arc shape of the bottom surface of the shell to form an arc smoke collecting cover, an arc exhaust outlet on the smoke collecting cover is communicated with an air inlet of the centrifugal wind wheel, the arc exhaust outlet forms an air inlet with high and low positions taken into consideration, low-position oil smoke which is diffused instantly can be effectively sucked, and the smoke exhaust effect of the range hood is improved.

According to the range hood, the fan system is arranged on the upper portion, the air inlet is arc-shaped, so that the suction inlet of the fan system and the air inlet of the smoke collecting cover are not on the same plane, oil smoke needs to overcome the problem that a long air channel enters the fan system, large flowing loss is caused, and useless work of the fan system is increased. And after the fan system is arranged, the space occupied by the whole range hood is increased.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the range hood aiming at the defects in the prior art, so that the oil smoke absorption effect is improved, and the cooking operation experience of a user is not influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes hollow box and fan system, the box includes left side board and right side board, its characterized in that: the air conditioner is characterized in that a first air inlet is formed in the left side plate, a second air inlet is formed in the right side plate, the fan systems are arranged in the box body, the fan systems are arranged in a left-right mode to form two parallel fans, each fan system is provided with a fan air inlet, the fan air inlet of the fan system on the left side is opposite to the first air inlet, and the fan air inlet of the fan system on the right side is opposite to the second air inlet.

Preferably, in order to match with the air inlet of the fan, the first air inlet and the second air inlet are both circular.

In order to better enable oil smoke to enter the fan system, the left side plate and the right side plate extend in the vertical direction, the shaft of the fan system horizontally extends in the left-right direction, the first air inlet is overlapped with the left fan air inlet, and the second air inlet is overlapped with the right fan air inlet.

In order to enlarge the smoke gathering range and avoid the oil smoke on the left side and the right side from escaping, the range hood further comprises a first smoke baffle and a second smoke baffle, the first smoke baffle transversely extends leftwards from the top of the left side plate, and the second smoke baffle transversely extends rightwards from the top of the right side plate.

In order to guide the rising oil smoke into the air inlet, the bottom surfaces of the first smoke baffle and the second smoke baffle are planes extending horizontally, so that the first smoke baffle and the second smoke baffle are perpendicular to the corresponding air inlet on the box body.

In order to put the articles conveniently, the top surfaces of the first smoke baffle and the second smoke baffle are planes extending horizontally.

In order to discharge oil smoke gas flow conveniently, an air outlet is formed in the top of the box body and located between the first smoke baffle and the second smoke baffle, the fan system is provided with a fan air outlet, and the air outlet and the fan air outlet are arranged correspondingly.

In order to avoid mutual interference of oil fume flows on the left side and the right side and improve oil fume escape on the left side and the right side, a flow passage from the first air inlet to the left fan system and a flow passage from the second air inlet to the right fan system are mutually isolated.

Preferably, each fan system comprises a volute, each volute comprises a first cover plate, a second cover plate and a ring wall arranged between the first cover plate and the second cover plate, each fan air inlet is formed in the first cover plate, and the two volutes share one second cover plate or the two second cover plates are attached tightly, so that flow passages in the two volutes are independent of each other.

Preferably, realize the independence of runner for simple structure to need not to set up extra structures such as baffle, every fan system includes spiral case and air intake circle, and the fan air intake that is located left fan system is close to the first air intake on the left side board, and the fan air intake that is located the fan system on right side then is close to the second air intake on the right side board, the air intake circle is including fixing the installation department at the box outside and extending into the water conservancy diversion portion in the spiral case from the fan air intake by the interior week of installation department, the periphery at first air intake and second air intake is fixed to the installation department.

For filtering the oil smoke that gets into in the fan system, play the effect of rectification simultaneously, first air intake and second air intake department all are provided with the filter screen, the filter screen is for being the arch to the external salient of box.

Compared with the prior art, the invention has the advantages that: the left side and the right side are used for air inlet, and meanwhile, the fan system is arranged below and is opposite to the air inlet of the box body, so that direct suction is realized, the space of an upper fan frame is saved, the whole oil fume flow path is simple, the flow loss caused by a long air channel is not required to be overcome, the idle work of a power system is increased, the space of an upper cabinet can be saved due to compact structure, the oil fume suction effect is ensured, and the cooking operation experience of a user is not influenced; the range of a negative pressure area is ensured by adopting the air inlet of the direct suction to be matched with the smoke baffle. The air inlets of the two fan systems are mutually isolated, and a flow channel from the first air inlet to the left fan system and a flow channel from the second air inlet to the right fan system are mutually isolated, so that air flows on the left side and the right side cannot interfere with each other, and meanwhile, smoke blocking plates on the two sides are combined, so that smoke leakage on the left side and the right side can be improved; the oil smoke passes through the dual separator, and firstly the filter screen collision separation of box air intake department, secondly the impeller centrifugation is got rid of and is inhaled the separation, synthesizes promotion oil smoke separation effect.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;

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

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

FIG. 4 is a schematic view of a box and a smoke baffle of the range hood according to the embodiment of the present invention;

fig. 5 is an exploded schematic view of a fan system of a range hood according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "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 illustrated in the drawings for the purposes of convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, construction and operation, and that the disclosed embodiments of the invention are arranged in different orientations, so that the directional terms are exemplary only and are not to be construed as limiting, e.g., "upper," "lower than," and the same, "" lower than, "etc., where the same, and the same than the like in the same than the other than the same than the other than the same in the same than the same in the same than in the same direction of the same, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 5, a range hood includes a box body 1 and a fan system 2 disposed in the box body 1, wherein the box body 1 is preferably rectangular and includes a left side plate 11 and a right side plate 12. The left side plate 11 is provided with a first air inlet 111, and the right side plate 12 is provided with a second air inlet 121. The left side plate 11 and the right side plate 12 both extend forward and backward, and both extend in a longitudinal direction, preferably vertically, thereby making the first air inlet 111 and the second air inlet 121 perpendicular to the pan surface of the pot on the cooking bench.

The fan system 2 is provided with two fans which are arranged in parallel at the left and the right to form a parallel double-fan structure. The axis of each fan system 2 extends in the left-right direction. Each fan system 2 includes a volute 21, an impeller 22 disposed in the volute 21, and a motor 23 for driving the impeller 22 to rotate, and the two volutes 21 may be integrally formed. The motor 23 is a dual output shaft motor, and the two fan systems 2 share the same motor 23, with the output shaft of the motor 23 preferably extending horizontally. The volute casing 21 is provided with a fan air inlet 211, wherein the fan air inlet 211 of the fan system 2 located on the left side is close to the first air inlet 111 on the left side plate 11 and faces the first air inlet 111, and the fan air inlet 211 of the fan system 2 located on the right side is close to the second air inlet 121 on the right side plate 12 and faces the second air inlet 121. The volute casing 21 is further provided with a fan air outlet 212, and the fan air outlet 212 is located at the top of the volute casing 21. The left volute 21 is closely attached to the left side plate 11, and the right volute 21 is closely attached to the right side plate 12.

The first and

second air inlets

111 and 121 are each circular so as to be matched with the corresponding fan air inlet 211. Preferably, the first air inlet 111 coincides with the center of the corresponding fan air inlet 211, and the second air inlet 121 coincides with the center of the corresponding fan air inlet 211. By "coincident" herein is meant that the projections onto the front to back vertical planes coincide. The first intake vent 111 and the second intake vent 121 are completely symmetrically disposed.

The fan system 2 further includes an air inlet ring 24, the air inlet ring 24 includes a mounting portion 241 fixed outside the housing 1 and a guiding portion 242 extending from the inner periphery of the mounting portion 241 to the inside of the volute 21 from the fan inlet 211, and the mounting portion 241 is fixed at the outer periphery of the first air inlet 111 and the second air inlet 121. The air inlet ring 24 can guide the oil smoke outside the box body 1 into the fan system 2.

The first air inlet 111 and the second air inlet 121 are both provided with a filter screen 13, the filter screen 13 is in an arch shape protruding out of the box body 1, preferably, the filter screen 13 is a honeycomb network, and can rectify, guide and filter grease on passing oil smoke.

Each volute 21 comprises a first cover plate 213, a second cover plate 214 and a circumferential wall 215 arranged between the first cover plate 213 and the second cover plate 214, each fan inlet 211 is opened on the first cover plate 213, and the first cover plate 213, the second cover plate 214 and the circumferential wall 215 jointly enclose the fan outlet 212 at the top. The two volutes 21 may share one second cover plate 214, or the two second cover plates 214 may be tightly attached, so that the two fan inlets 211 and the flow channels inside the two volutes 21 are independent from each other, and the oil smoke only converges after flowing out from the fan outlet 212.

Air outlet 14 has been seted up at the top of box 1, and the position, the shape and the size of air outlet 14 all correspond with fan air outlet 212, and in this embodiment, two fan air outlets 212 of parallelly connected double fan are equivalent to the size of air outlet 14, and the air current that two fan air outlets 212 flow are converged at air outlet 14 and can be discharged through same air outlet cover.

The range hood further comprises a first smoke baffle 31 and a second smoke baffle 32, wherein the first smoke baffle 31 transversely extends leftwards from the top of the left side plate 11, and the second smoke baffle 32 transversely extends rightwards from the top of the right side plate 12. The air outlet 14 is located between the first smoke baffle 31 and the second smoke baffle 32, the first smoke baffle 31 is located on the left side of the air outlet 14, and the second smoke baffle 32 is located on the right side of the air outlet 14. Preferably, the first smoke barrier 31 and the second smoke barrier 32 are both flat plates extending horizontally. Therefore, the first smoke baffle 31 and the second smoke baffle 32 are both parallel to the pan surface of the pan on the cooking bench, the first smoke baffle 31 is perpendicular to the first air inlet 111, the second smoke baffle 32 is perpendicular to the second air inlet 121, the first smoke baffle 31 guides the upwards rising oil smoke into the first air inlet 111, the second smoke baffle 32 guides the upwards rising oil smoke into the second air inlet 121, and the effect of blocking smoke and isolating air current interference is achieved. In addition, because the top surfaces of the two smoke baffle plates are planes, the smoke baffle plate can also play a role in placing objects. Preferably, the first smoke barrier 31 and the second smoke barrier 32 are integrally formed with the case 1.

The range hood of the invention separates oil smoke through two times, firstly, the first weight collides and separates with the filter screen 13 when passing through the filter screen 13, and secondly, the second weight centrifugally throws and sucks and separates through the impeller 22. And above-mentioned kind of parallelly connected double fan structure, the amount of wind is bigger, and the wind speed reduces when inhaling, has promoted air quality and has reduced the noise.

According to the range hood, the air inlet of the fan system 2 and the air inlet of the box body 1 are arranged oppositely, so that the space of an upper fan frame is saved, the whole oil fume flow path is simple, the flow loss caused by a long air channel is not required to be overcome, the idle work of a power system is increased, meanwhile, the space of an upper cabinet can be saved, the whole box body is simple in structure and small in size, the range hood is suitable for different user installation environments, the cleanness and the convenience are improved, and the user can not see an oil channel inside in a region range. The installation flexibility is very high, is applicable to wall-hanging, also is applicable to island type, also can direct mesa installation simultaneously.

In order to ensure the effect of oil smoke absorption, a direct-suction air inlet is matched with a smoke baffle plate to ensure the range of a negative pressure area. The fan air inlets 211 of the two fan systems 2 are mutually isolated, and the flow channel from the first air inlet 111 to the left fan system 2 and the flow channel from the second air inlet 121 to the right fan system 2 are mutually isolated, so that the air flows on the left side and the right side cannot interfere with each other, and the smoke baffle plates on the two sides are combined to improve the smoke leakage on the left side and the right side. The left and right double impellers 22 have the negative pressure on the two sides uniformly and intensively distributed, and the oil smoke absorption effect is further improved.

Claims

1. The utility model provides a range hood, includes hollow box (1) and fan system (2), box (1) includes left side board (11) and right side board (12), its characterized in that: first air intake (111) have been seted up on left side board (11), second air intake (121) have been seted up on right side board (12), fan system (2) set up in box (1), fan system (2) have about two and constitute parallelly connected double fan, every fan system (2) have fan air intake (211), fan air intake (211) that are located left fan system (2) just to first air intake (111), fan air intake (211) that are located right side fan system (2) then just to second air intake (121).

2. The range hood of claim 1, wherein: the first air inlet (111) and the second air inlet (121) are both circular.

3. The range hood of claim 2, wherein: the left side board (11) and the right side board (12) extend in the vertical direction, the shaft of the fan system (2) extends horizontally in the left-right direction, the first air inlet (111) and the left fan air inlet (211) coincide, and the second air inlet (121) and the right fan air inlet (211) coincide.

4. The range hood of claim 1, wherein: the range hood further comprises a first smoke baffle (31) and a second smoke baffle (32), the first smoke baffle (31) transversely extends leftwards from the top of the left side plate (11), and the second smoke baffle (32) transversely extends rightwards from the top of the right side plate (12).

5. The range hood of claim 4, wherein: the bottom surfaces of the first smoke baffle plate (31) and the second smoke baffle plate (32) are planes extending horizontally, so that the bottom surfaces of the first smoke baffle plate and the second smoke baffle plate are perpendicular to corresponding air inlets on the box body (1).

6. The range hood of claim 4, wherein: the top surfaces of the first smoke baffle plate (31) and the second smoke baffle plate (32) are planes extending horizontally.

7. The range hood of claim 4, wherein: an air outlet (14) is formed in the top of the box body (1), the air outlet (14) is located between the first smoke baffle (31) and the second smoke baffle (32), the fan system (2) is provided with a fan air outlet (212), and the air outlet (14) and the fan air outlet (212) are arranged correspondingly.

8. The range hood according to any one of claims 1 to 7, wherein: and the flow channel from the first air inlet (111) to the left fan system (2) and the flow channel from the second air inlet (121) to the right fan system (2) are isolated from each other.

9. The range hood of claim 8, wherein: each fan system (2) comprises a volute (21), each volute (21) comprises a first cover plate (213), a second cover plate (214) and a circular wall (215) arranged between the first cover plate (213) and the second cover plate (214), each fan air inlet (211) is formed in the first cover plate (213), the two volutes (21) share the second cover plate (214) or the two second cover plates (214) are attached tightly, and therefore flow passages inside the two volutes (21) are independent of each other.

10. The range hood of claim 8, wherein: every fan system (2) includes spiral case (21) and air intake circle (24), and fan air intake (211) that are located left fan system (2) are close to first air intake (111) on left side board (11), and fan air intake (211) that are located fan system (2) on right side then are close to second air intake (121) on right side board (12), air intake circle (24) are including fixing installation department (241) outside box (1) and by the interior week of installation department (241) extend into water conservancy diversion portion (242) in spiral case (21) from fan air intake (211), the periphery at first air intake (111) and second air intake (121) is fixed in installation department (241).

11. The range hood according to any one of claims 1 to 7, wherein: first air intake (111) and second air intake (121) department all are provided with filter screen (13), filter screen (13) are for being to the arch of box (1) outer salient.