CN117109047A - Fume exhaust fan - Google Patents

Abstract

The embodiment of the application discloses a range hood, which comprises a shell, a fan assembly, a first flow guide assembly and a second flow guide assembly, wherein the shell is provided with a containing cavity, a first smoke suction port and a second smoke suction port; a second air channel is formed between the second flow guiding assembly and the inner wall surface of the shell, the second air channel is communicated with the second smoking port and the second air inlet, and the second air channel is mutually independent of the first air channel. According to the application, the second air duct and the first air duct are mutually independent, so that when the first smoke suction port and the second smoke suction port are opened, the oil smoke sucked through the first smoke suction port and the oil smoke sucked through the second smoke suction port are not contacted, and air flow vortex is not formed between the oil smoke sucked through the first smoke suction port and the oil smoke sucked through the second smoke suction port, so that noise is reduced.

Description

Fume exhaust fan

Technical Field

The application relates to the technical field of electrical equipment, in particular to a range hood.

Background

With the improvement of living standard, the range hood gradually becomes an indispensable electrical appliance in a kitchen of people. The range hood works by utilizing the fluid dynamics principle, and the fan assembly arranged in the range hood is used for exhausting the oil smoke so as to quickly exhaust the oil smoke harmful to human bodies, which is generated when cookware in a kitchen is cooked, and the oil smoke is discharged to the outside, thereby reducing the air pollution of the kitchen. However, in the related art, the noise of the range hood is large in the use process, and the use experience of a user is poor.

Disclosure of Invention

The embodiment of the application provides a range hood, which is used for solving the problems of high noise and poor use experience of users in the use process of the range hood in the related technology. The technical scheme is as follows;

in a first aspect, an embodiment of the present application provides a range hood, including:

a housing formed with a receiving chamber, a first smoking port and a second smoking port communicating with the receiving chamber;

the fan assembly is arranged in the accommodating cavity and is provided with a first air inlet and a second air inlet which is arranged at intervals with the first air inlet;

the first flow guide assembly is arranged in the accommodating cavity and forms a first air channel with the inner wall surface of the shell, and the first air channel is communicated with the first smoking port and the first air inlet;

the second flow guide assembly is arranged in the accommodating cavity and forms a second air channel with the inner wall surface of the shell, the second air channel is communicated with the second smoking port and the second air inlet, and the second air channel is mutually independent of the first air channel.

According to the range hood disclosed by the embodiment of the application, the shell of the range hood is designed to be provided with the two smoke suction openings, the fan assembly is designed to be provided with the two air inlets, and each smoke suction opening is communicated with the corresponding air inlet through the air duct, so that the smoke sucked by the two smoke suction openings is mutually independent and cannot be in contact with each other, and further, airflow vortex cannot be formed, so that the purpose of noise reduction is achieved. Meanwhile, compared with the design of a single air inlet and a single smoke suction port, the design of the two smoke suction ports and the two air inlets can improve the smoke absorption performance of the range hood.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a front view structure of a range hood according to an embodiment of the present application;

fig. 2 is a schematic perspective view of the range hood shown in fig. 1 in a first position of the opening and closing assembly;

fig. 3 is a schematic perspective view of the range hood shown in fig. 1 in a second position of the opening and closing assembly;

fig. 4 is a schematic cross-sectional structure of the range hood shown in fig. 1;

fig. 5 is a perspective exploded view of the range hood shown in fig. 1;

FIG. 6 is a schematic view of the cross-sectional structure in the direction A-A of FIG. 4;

FIG. 7 is a schematic view of the partial structure of FIG. 4;

fig. 8 is a schematic structural view of a first baffle in the range hood shown in fig. 1;

fig. 9 is a schematic structural view of a second baffle in the range hood shown in fig. 1;

fig. 10 is a schematic structural view of a third baffle in the range hood shown in fig. 1;

FIG. 11 is a schematic diagram of the noise radiation corresponding to FIG. 4;

FIG. 12 is a schematic view of the noise radiation of the cross-sectional view at A-A in FIG. 4;

FIG. 13 is a schematic view of a sectional structure in the direction B-B in FIG. 4;

fig. 14 is a schematic structural view of a fourth baffle in the range hood shown in fig. 1.

Description of the drawings: 10. a range hood; 11. a housing; 111. a first accommodation chamber; 112. a first smoke suction port; 1121. a first sub-puff; 113. a second smoking port; 114. a bottom plate; 115. a first side plate; 116. a second side plate; 117. a smoke collecting cavity; 118. a main housing of the cigarette machine; 119. a smoke collecting cavity shell; 12. a fan assembly; 121. a first air inlet; 122. a second air inlet; 123. a volute; 124. an impeller; 13. a first flow directing assembly; 131. a first air duct; 1311. a first sub-duct; 1312. a second sub-duct; 132. a first deflector; 1321. a first sub-deflector; 1322. a second sub-deflector; 133. a second deflector; 134. a third deflector; 135. a first sound-absorbing layer; 136. a second sound-absorbing layer; 137. a third sound-absorbing layer; 1371. a first sub-sound-absorbing layer, 1372, a second sub-sound-absorbing layer; 1373. a third sub-attractive layer; 14. a second flow directing assembly; 141. a second air duct; 1411. a third sub-air duct; 1412. a fourth sub-duct; 142. a fourth deflector; 1421. a third sub-deflector; 1422. a fourth sub-deflector; 143. a noise reduction cavity; 144. a fifth deflector; 145. a fourth sound-absorbing layer; 15. an opening and closing assembly; 151. a first cover plate; 152. a second cover plate; 153. a third cover plate; 16. a check valve; 17. an oil cup; p, a first direction; q, the second direction; t, third direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application as detailed in the accompanying claims.

Referring to fig. 1 to 3, a range hood 10 is provided in accordance with the present application. The range hood 10 can be used in a kitchen and is installed near a cooking bench plane, and the range hood 10 can absorb oil smoke generated by cookware on the cooking bench plane during cooking, so that the oil smoke during cooking is prevented from being filled in the kitchen, and the cooking experience of a user is influenced.

Specifically, referring to fig. 2 to 4, the range hood 10 includes a housing 11 and a fan assembly 12, the housing 11 is formed with a first accommodating cavity 111 and a first smoke suction port 112 and a second smoke suction port 113 which are communicated with the first accommodating cavity 111, the fan assembly 12 is disposed in the first accommodating cavity 111, the fan assembly 12 is used for generating negative pressure suction force, so that the smoke can be sucked into the first accommodating cavity 111 of the housing 11 through the first smoke suction port 112 and/or the second smoke suction port 113, and the smoke generated during cooking in a kitchen is reduced.

The fan assembly 12 may be formed with a first air inlet 121 and a second air inlet 122 spaced from the first air inlet 121, and both the first air inlet 121 and the second air inlet 122 may exhaust the fume.

Referring to fig. 4 and 5, the range hood 10 according to the embodiment of the present application further includes a first guiding component 13, where the first guiding component 13 is disposed in the first accommodating cavity 111 of the housing 11, and forms a first air duct 131 with an inner wall surface of the housing 11, and the first air duct 131 is communicated with the first smoke suction port 112 and the first air inlet 121. The first air duct 131 communicating the first smoke suction port 112 and the first air inlet 121 is formed in the housing 11, so that the smoke entering through the first smoke suction port 112 can reach the first air inlet 121 of the fan assembly 12 more smoothly under the guidance of the first air duct 131, and the smoke of the range hood 10 is smoother.

The range hood 10 of the embodiment of the application further includes a second flow guiding assembly 14, wherein the second flow guiding assembly 14 is disposed in the first accommodating cavity 111 of the housing 11, and forms a second air duct 141 with the inner wall surface of the housing 11, and the second air duct 141 is communicated with the second smoke suction port 113 and the second air inlet 122. The second air duct 141 communicating the second smoke suction port 113 and the second air inlet 122 is formed in the housing 11, so that the smoke entering through the second smoke suction port 113 can reach the second air inlet 122 of the fan assembly 12 more smoothly under the guidance of the second air duct 141, and the smoke suction of the range hood 10 is smoother.

The second air duct 141 and the first air duct 131 are independent of each other, so that when the first smoke suction port 112 and the second smoke suction port 113 are both opened, the smoke sucked through the first smoke suction port 112 and the smoke sucked through the second smoke suction port 113 are not contacted, and do not form airflow vortex, so that noise is reduced.

When both the first smoke suction port 112 and the second smoke suction port 113 are opened, the operating principle of the range hood 10 is as follows: when the fan assembly 12 works, negative pressure suction force is generated, so that the oil smoke sucked by the first smoke suction port 112 can enter the fan assembly 12 through the first air duct 131 and the first air inlet 121, and then is discharged out of the room through an exhaust pipeline and the like communicated with the fan assembly 12; meanwhile, the oil smoke sucked by the second smoke suction port 113 can enter the fan assembly 12 through the second air duct 141 and the second air inlet 122, and then is discharged outdoors through an exhaust pipeline and the like communicated with the fan assembly 12.

Specifically, referring to fig. 4, the fan assembly 12 may include a volute 123 and an impeller 124, the volute 123 may be formed with a second accommodating chamber (not labeled in the drawing) and a first air inlet 121, a second air inlet 122 and an air outlet (not labeled in the drawing) which are communicated with the second accommodating chamber, the air outlet may be communicated with an exhaust pipe, the impeller 124 may be located in the second accommodating chamber, and the impeller 124 is used for generating negative pressure suction when rotating, so that oil smoke can be sucked into the second accommodating chamber of the volute 123 through the first smoke suction port 112 and the second smoke suction port 113, and then discharged outdoors through the air outlet of the volute 123 and the exhaust pipe. It will be appreciated that, to avoid backflow, a check valve 16 may be provided between the air outlet of the volute 123 and the exhaust duct, so that air flow can only be transmitted from the air outlet of the volute 123 in the direction of the exhaust duct, but not from the exhaust duct in the direction of the volute 123.

Optionally, the caliber of at least part of the first air duct 131 may be gradually reduced along the airflow direction to accelerate the airflow, and the guiding effect is started by the attaching effect of the airflow in the tapered air duct, so that airflow turbulence and vortex are avoided in the process of flowing the oil smoke, and noise is reduced.

Further, the first duct 131 includes a first sub duct 1311 adjacent to the first smoke suction port 112, and the aperture of the first sub duct 1311 gradually decreases along the airflow direction in the first direction p. That is, the first sub-air duct 1311 adopts a tapered air duct design in the first direction p, so that airflow can be accelerated, a guiding effect is started by an attaching effect of airflow in the tapered air duct, airflow turbulence and vortex are avoided in the process of flowing oil smoke, and noise is reduced.

Further, the first air duct 131 further includes a second sub-air duct 1312 communicating with the first sub-air duct 1311, the second sub-air duct 1312 is disposed near the first air inlet 121, and the aperture of the second sub-air duct 1312 gradually decreases along the airflow direction in the second direction q. That is, the second sub-air duct 1312 adopts the design of the tapered air duct in the second direction q, so that the airflow can be accelerated, the guiding effect is started by the attaching effect of the airflow of the tapered air duct, the airflow turbulence and vortex are avoided in the process of flowing the oil smoke, and the noise is reduced.

Along the airflow direction, the "taper" in the gradual decrease of the caliber of the sub-air duct (the first sub-air duct 1311, the second sub-air duct 1312) may be: the caliber of the sub-air duct gradually decreases in a linear form along the air flow upwards. The linear form can be a linear form, a parabolic form and the like, so that the tapered design of the sub-air duct is smoother, and the air flow is smoother.

Optionally, the second direction q intersects the first direction p to achieve a tapered duct design in multiple directions, so that the soot guiding effect is better. Wherein the intersection of the second direction q and the first direction p is: the included angle between the second direction q and the first direction p in the same plane is more than 0 degrees and less than 180 degrees; for example, the included angle may be 30 °, 60 °, 90 °, 120 °, and the like, which is not limited in the embodiment of the present application.

Optionally, the first flow guiding assembly 13 includes a first flow guiding plate 132, a second flow guiding plate 133, and two third flow guiding plates 134 disposed at intervals, one end of the first flow guiding plate 132 is disposed on one side of the fan assembly 12 where the first air inlet 121 is located and is connected to the fan assembly 12, and the other end extends in a direction close to the first smoking opening 112 and is connected to the housing 11. The first guide plate 132 is connected between the first air inlet 121 of the fan assembly 12 and the first air suction opening 112 of the housing, so that the oil smoke can be better guided into the first air inlet 121 from the first air suction opening 112, and the oil smoke is prevented from escaping to other parts in the first accommodating cavity 111. It should be noted that, the first baffle 132 may be connected to the first end plate of the fan assembly 12, where the first air inlet 121 is formed, or may be connected to a peripheral plate of the fan assembly 12, where the first end plate is connected to the peripheral plate, which is not limited in the embodiment of the present application.

Optionally, the second baffle 133 is disposed on a side of the first baffle 132 facing away from the fan assembly 12 and close to the first smoke suction port 112, the second baffle 133 and the first baffle 132 are disposed on opposite sides of the first smoke suction port 112, a first sub-air channel 1311 is formed between the second baffle 133 and the first baffle 132 and between the second baffle 133 and the inner wall surface of the housing 11, and the distance between the first baffle 132 and the second baffle 133 gradually decreases along the airflow direction. At this time, the first direction p is a direction along the distribution direction of the first baffle 132 and the second baffle 133 and is substantially parallel to the opening end face of the first smoke suction port 112, and the opening end face of the first smoke suction port 112 may be a plate surface of the bottom plate 114 provided with the first smoke suction port 112. The first sub-air duct 1311 is designed in a tapered manner by adjusting the distance between the first guide plate 132 and the second guide plate 133 along the air flow direction, so that the structure is simple and the production and the manufacturing are convenient.

Optionally, referring to fig. 4 to 6, two third deflectors 134 are disposed on a side of the first deflector 132 facing away from the fan assembly 12 and away from the first smoke suction port 112, the two third deflectors 134 are both connected to the housing 11, a second sub-air duct 1312 is formed between the two third deflectors 134 and an inner wall surface of the housing 11, and a distance between two adjacent third deflectors 134 gradually decreases along an airflow direction. At this time, the second direction q is approximately the distribution direction of the two third deflectors 134, and may be approximately perpendicular to the central axis of the first air inlet 121. The tapered design of the second sub-air duct 1312 is realized by adjusting the distance between the two third guide plates 134 along the air flow direction, and the structure is simple and the production and the manufacture are convenient.

It should be noted that, the tapering design of the first sub-air duct 1311 may also be achieved by adjusting the distance between the opposite inner wall surfaces of the housing 11 where the first sub-air duct 1311 is formed, and the tapering design of the second sub-air duct 1312 may also be achieved by adjusting the distance between the opposite inner wall surfaces of the housing 11 where the second sub-air duct 1312 is formed, which is not limited by the embodiment of the present application.

Optionally, referring to fig. 7 and 8, the first baffle 132 includes a first sub-baffle 1321 and a second sub-baffle 1322, the first sub-baffle 1321 is attached to a side of the fan assembly 12 where the first air inlet 121 is located, and a second sub-air duct 1312 is formed between the first sub-baffle 1321 and the two third baffles 134 and the inner wall surface of the housing 11. The first sub-deflector 1321 is attached to the fan assembly 12, so that the connection area of the first deflector 132 and the fan assembly 12 can be increased, and the connection stability of the first deflector 132 and the fan assembly 12 can be improved. The second sub-deflector 1322 is disposed at an angle to the first sub-deflector 1321 and is connected to the first sub-deflector 1321, the second sub-deflector 1322 is disposed between the first sub-deflector 1321 and the first smoke-absorbing port 112, and a first sub-air duct 1311 is formed between the second sub-deflector 1322 and the second deflector 133 and between the second sub-deflector 133 and the inner wall surface of the housing 11. The second sub-baffle 1322 and the first sub-baffle 1321 are bent, so that the space utilization rate in the first accommodating cavity 111 can be improved, the inlet area of the first sub-air duct 1311 can be enlarged, and the smoking effect of the first smoke suction port 112 can be enhanced. The second sub-baffle 1322 and the first sub-baffle 1321 can be in smooth transition connection, so that the air flow is smooth.

Optionally, the inclination angle between the second sub-baffle 1322 and the second baffle 133 may be satisfied, the distance from the end of the second baffle 133 near the first smoke suction port 112 to the second sub-baffle 1322 is L1, the distance from the end of the second sub-baffle 1322 near the first sub-baffle 1321 to the second baffle 133 is L2, and the ratio of L2/L1 is greater than or equal to 0.5 and less than or equal to 0.8, so that the first sub-air duct 1311 forms a suitable tapering air port, and the problem that the sufficient inclination degree is not reached or the inclination is too serious is avoided.

Further alternatively, the second sub-baffle 1322 may have the first sound absorbing layer 135 connected thereto, and the first sound absorbing layer 135 may be disposed on a side of the second sub-baffle 1322 facing away from the second baffle 133. That is, the first sound-absorbing layer 135 is disposed outside the first sub-duct 1311, so that noise can be reduced, and interference of the design of the first sound-absorbing layer 135 to the airflow in the first sub-duct 1311 can be avoided.

Optionally, referring to fig. 7 and 9, a second sound absorbing layer 136 is connected to the second baffle 133, and the second sound absorbing layer 136 is disposed on a side of the second baffle 133 facing away from the first baffle 132. That is, the second sound absorbing layer 136 is disposed outside the first sub-duct 1311, so as to avoid interference with the airflow in the first sub-duct 1311 while reducing noise.

Optionally, in conjunction with fig. 7 and 10, a third sound absorbing layer 137 is attached to two third baffles 134. The third sound absorbing layer 137 may include a first sub sound absorbing layer 1371 disposed on two opposite surfaces of the two third guide plates 134, and a second sub sound absorbing layer 1372 connected between the two first sub sound absorbing layers 1371, so as to enlarge the setting area of the third sound absorbing layer 137, improve the sound absorbing effect, and reduce noise better.

Fig. 11 is a schematic diagram of noise radiation when the range hood 10 is in use, fig. 12 is a schematic diagram of noise radiation of a cross-sectional view of the range hood 10 shown in fig. 4 at A-A, it can be seen from fig. 11 and 12 that the noise transmission direction or radiation direction is opposite to the airflow flowing direction, multiple reflections of noise can be caused by the baffle, the sound energy is weakened, the sound insulation effect is achieved, and the arrangement of the first sound absorbing layer 135, the second sound absorbing layer 136 and the third sound absorbing layer 137 can well absorb the noise generated in the housing 11, so that a better noise reduction effect can be achieved. Wherein, the baffle can set up a plurality of meshes in the position department that corresponds the sound absorbing layer setting.

In the embodiment of the present application, any noise-reducing object may be selected for the first sound-absorbing layer 135, the second sound-absorbing layer 136 and the third sound-absorbing layer 137; for example, sound absorbing cotton or the like may be selected, and the embodiment of the present application is not limited thereto. Any connection mode can be selected between the first sound absorbing layer 135 and the first guide plate 132, between the second sound absorbing layer 136 and the second guide plate 133, and between the third sound absorbing layer 137 and the third guide plate 134; for example, an adhesive connection may be used, which is not limited in the embodiment of the present application.

Specifically, the casing 11 includes a bottom plate 114 and a first side plate 115, the bottom plate 114 is configured to face a top of a kitchen range plane when the range hood 10 is in use, and the bottom plate 114 is formed with a first smoke suction port 112; the first side plate 115 is connected to the bottom plate 114 and forms an included angle with the bottom plate 114, and the first side plate 115 is formed with a second smoking opening 113. When the range hood 10 is used, the first smoke suction port 112 can be arranged facing the hearth plane, so that the smoke generated by the cookware on the hearth plane can be better absorbed, the second smoke suction port 113 arranged on the first side plate 115 can absorb the smoke which cannot be sucked by the first smoke suction port 112, and the smoke suction effect of the range hood 10 can be improved when the first smoke suction port 112 and the second smoke suction port are used simultaneously.

Alternatively, the first smoking port 112 includes more than two first sub-smoking ports 1121 arranged at intervals, and the second smoking port 113 may be arranged corresponding to the middle of two adjacent first sub-smoking ports 1121. The first sub-smoke absorbing openings 1121 of more than two spaced can be arranged in one-to-one correspondence with more than two kitchen ranges on the kitchen range plane, so that the lampblack generated on each kitchen range can be absorbed into the lampblack absorber 10 through the corresponding first sub-smoke absorbing openings 1121, and lampblack and the like between the two kitchen ranges can be absorbed into the lampblack absorber 10 through the second smoke absorbing openings 113, so that the absorption of more lampblack can be realized on the premise of ensuring the better lampblack absorption performance of each kitchen range.

Further alternatively, in the third direction t, the second smoking port 113 and the at least one first sub-smoking port 1121 have an overlapping area, and more than two first sub-smoking ports 1121 are distributed in the third direction t. The second smoke absorbing port 113 is designed to overlap with at least one first sub-smoke absorbing port 1121, so that the second smoke absorbing port 113 can absorb the smoke corresponding to the first sub-smoke absorbing port 1121 and not inhaled through the first sub-smoke absorbing port 1121, thereby enhancing the smoke absorbing effect of the range hood 10. Preferably, in the third direction t, the second smoking port 113 and the two first sub-smoking ports 1121 have overlapping areas, so as to reduce the oil smoke escaping phenomenon.

Still further alternatively, in the third direction t, the length dimension of the area overlapping with the at least one first sub-smoking port 1121 in the whole length dimension of the second smoking port 113 is 30% -50% of the length dimension of the first sub-smoking port 1121, and by reasonably defining the dimensions of the second smoking port 113 and the first sub-smoking port 1121 in the third direction t, the second smoking port 113 can absorb the soot which the first sub-smoking port 1121 cannot inhale, and the opening dimension of the second smoking port 113 is not too large, which can have the characteristics of high structural strength and strong smoking performance. In the embodiment of the present application, the third direction t is parallel to the second direction q.

The first sub-smoking port 1121 and the second smoking port 113 may each have a substantially rectangular structure, the third direction t may be a direction in which the long side of the first sub-smoking port 1121 is located, and the long side of the first sub-smoking port 1121 may be substantially parallel to the long side of the second smoking port 113. The first sub-smoking openings 1121 and/or the second smoking openings 113 may have a substantially diamond-shaped structure, which is not limited in the embodiment of the present application.

Optionally, the first smoke suction port 112 and the second smoke suction port 113 may be provided with mesh plates, and mesh holes are formed on the mesh plates, so that the oil smoke can be sucked into the range hood 10 through the mesh holes on the mesh plates, the size of the mesh holes is greatly reduced compared with the sizes of the first smoke suction port 112 and the second smoke suction port 113, and potential safety hazards caused by human hand extending in and large-scale barriers entering to influence the normal operation of the range hood 10 can be avoided. The mesh plate at the first smoking port 112 and/or the mesh plate at the second smoking port 113 may be detachably connected to the housing 11, so as to facilitate the internal overhaul and cleaning operation.

Optionally, the casing 11 may further include a plurality of second side plates 116 in addition to the first side plates 115, where the plurality of second side plates 116 and the first side plates 115 are sequentially connected to form an annular structure, and the bottom plate 114 is disposed in the annular structure, so that the plurality of second side plates 116 form a smoke collecting cavity 117 on a side of the bottom plate 114 near the cooking bench plane when the range hood 10 is in use. The fume collecting cavity 117 can collect fume generated by the cooker in the use process, so that the collected fume can enter the first accommodating cavity 111 of the housing 11 through the first fume suction port 112 on the bottom plate 114 more easily. Optionally, the side of each second side plate 116 facing the cooking bench plane when the range hood 10 is in use may be flush to improve the structural regularity and aesthetic appearance of the range hood 10.

Optionally, the distance between the bottom plate 114 and the range plane is gradually reduced along the direction from one end close to the first side plate 115 to one end far from the first side plate 115 when the range hood 10 is in use, so that the oil smoke can enter the range hood 10 through the first smoke suction port 112 on the bottom plate 114; and the fume which is not sucked through the first fume sucking port 112 can reach the second fume sucking port 113 on the first side plate 115, so that the fume sucking effect is improved. Optionally, the included angle between the bottom plate 114 and the top plane may be greater than or equal to 13 ° and less than or equal to 45 °, so that the state of entering the oil smoke at the first smoke suction port 112 on the bottom plate 114 and the second smoke suction port 113 on the first side plate 115 is better.

Alternatively, the side of each second side plate 116 facing the cooking top plane when the range hood 10 is in use may be located between the side of the first side plate 115 facing the cooking top plane and the cooking top plane, one end of the bottom plate 114 may be connected to the side of the first side plate 115 facing the cooking top plane, and the other end of the bottom plate 114 may be connected to one of the plurality of second side plates 116, the second side plate 116 opposite to the first side plate 115, and located within the smoke collecting cavity 117. The range hood 10 may further include an oil cup 17, where the oil cup 17 is disposed in the smoke collecting cavity 117, the oil cup 17 is disposed on a side of the bottom plate 114 near the hearth plane and near one of the plurality of second side plates 116, and one of the second side plates 116 opposite to the first side plate 115 is in communication with the first accommodating cavity 111, so that the oil smoke in the range hood 10 may be collected between the bottom plate 114 and one of the plurality of second side plates 116 opposite to the first side plate 115, and collected via the oil cup 17 therein for unified treatment. The oil cup 17 is arranged in the smoke gathering cavity 117, so that the concealment is better, and the appearance uniformity and the appearance attractiveness of the oil press can be improved.

Alternatively, one second side plate 116 opposite to the first side plate 115 of the plurality of second side plates 116 may be disposed obliquely to the second baffle 133, specifically, one end of the second baffle 133 connected to the bottom plate 114 is disposed near an edge line of the first smoke suction port 112, and the other end of the second baffle 133 may extend obliquely toward and be connected to the one second side plate 116 opposite to the first side plate 115, so that the direction of the smoke is smoother. Alternatively, a second side plate 116 opposite the first side plate 115 may be connected to the two third deflectors 134, and the first air inlet 121 of the fan assembly 12 may be disposed toward the second side plate 116.

Alternatively, the second air inlet 122 and the first air inlet 121 may be disposed on opposite sides of the fan assembly 12, so that the first air duct 131 and the second air duct 141 can be separated to a greater extent, and interference therebetween is reduced. The first air inlet 121 may be disposed toward the first side plate 115, and the second air inlet 122 may be disposed toward one of the second side plates 116 opposite to the first side plate 115. Specifically, the first air inlet 121 and the second air inlet 122 may be disposed on opposite sides of the volute 123 of the fan assembly 12.

Optionally, the air suction performance of the first air inlet 121 may be higher than that of the second air inlet 122, and since the first smoke suction port 112 communicated with the first air inlet 121 through the first air duct 131 is disposed on the bottom plate 114 and the second smoke suction port 113 communicated with the second air inlet 122 through the second air duct 141 is disposed on the first side plate 115, the air suction performance of the first air inlet 121 is higher than that of the second air inlet 122, so that the smoke absorption capacity of the first smoke suction port 112 on the bottom plate 114 is higher than that of the second smoke suction port 113 on the first side plate 115, and the smoke in the kitchen can be removed better. Specifically, a middle disk of the impeller 124 disposed in the volute 123 may be disposed near the second air inlet 122, so as to achieve that the air suction performance at the second air inlet 122 is lower than that at the first air inlet.

Optionally, the second flow guiding assembly 14 may include a fourth flow guiding plate 142, one end of the fourth flow guiding plate 142 may be connected to a side of the fan assembly 12 where the second air inlet 122 is located, the other end may extend toward a direction close to the second air inlet 113 and be connected to the housing 11, and the fourth flow guiding plate 142 is connected between the second air inlet 122 of the fan assembly 12 and the second air inlet 113 of the housing 11, so that the oil smoke can be better guided into the second air inlet 122 from the second air inlet 113, and the oil smoke is prevented from escaping to other parts in the first accommodating cavity 111. It should be noted that, the fourth baffle 142 may be connected to the second end plate of the fan assembly 12, where the second air inlet 122 is formed, or may be connected to a peripheral plate of the fan assembly 12, where the second end plate is connected to the peripheral plate, which is not limited in the embodiment of the present application.

Alternatively, an end of the fourth baffle 142 adjacent to the second smoke-absorbing port 113 may be connected to an end of the first baffle 132 adjacent to the first smoke-absorbing port 112 such that a noise reduction cavity 143 is formed between the fourth baffle 142 and the first baffle 132. By applying the Helmholtz principle, the noise generated by the fan assembly 12 in the use process can be reduced through the noise reduction cavity 143, so that the use performance of the range hood 10 is improved. Wherein, the noise radiated from the fan assembly may be reflected on the first and fourth deflectors 132 and 142 a plurality of times, thereby reducing the noise.

Optionally, a fourth sound absorbing layer 145 may be disposed on a side of the fourth baffle 142 where the noise reducing cavity 143 is formed, and the first sound absorbing layer 135 on the first baffle 132 may also be disposed on a side of the first baffle 132 where the noise reducing cavity 143 is formed, so that the first sound absorbing layer 135 and the fourth sound absorbing layer 145 may absorb noise in the air duct on one hand, and absorb noise at a radiation position of the fan assembly on the other hand, thereby improving a utilization ratio of the sound absorbing layer, and improving noise reducing performance on the premise of reducing consumables of the sound absorbing layer.

Optionally, the second flow guiding assembly 14 may further include a fifth flow guiding plate 144, where the fifth flow guiding plate 144 is disposed on a side of the fourth flow guiding plate 142 facing away from the fan assembly 12, a third sub-air duct 1411 communicating with the first air inlet 121 is formed between the fifth flow guiding plate 144 and the fourth flow guiding plate 142, a fourth sub-air duct 1412 communicating with the second smoking opening 113 is formed between the first side plate 115 and the fourth flow guiding plate 142, and the second air duct 141 includes the third sub-air duct 1411 and the fourth sub-air duct 1412. The third sub-duct 1411 has a smaller aperture than the fourth sub-duct 1412 so that the cooking fumes may be better directed into the second air intake 122 of the fan assembly 12.

Optionally, referring to fig. 4, fig. 5, and fig. 14, the fourth baffle 142 includes a third sub-baffle 1421 and a fourth sub-baffle 1422, where the third sub-baffle 1421 is attached to a side where the second air inlet 122 of the fan assembly 12 is located, so as to increase a connection area of the fourth baffle 142 and the fan assembly 12, improve connection stability of the fourth baffle 142 and the fan assembly 12, make the fourth sub-baffle 1422 and the third sub-baffle 1421 be disposed at an included angle and connected, and make the fourth sub-baffle 1422 be disposed between the third sub-baffle 1421 and the second smoking port 113, and bend the fourth sub-baffle 1422 and the third sub-baffle 1421, so that space utilization in the first accommodating cavity 111 can be improved, an inlet area of the second air duct 141 is increased, and smoking effect at the second smoking port 113 is enhanced. The fourth sub-deflector 1422 and the third sub-deflector 1421 may be connected in a smooth transition manner, so that the air flow is smooth.

Referring to fig. 7, an included angle θ between the third sub-deflector 1421 and the fourth sub-deflector 1422 may be greater than or equal to 110 ° and less than or equal to 165 °, so that the second air duct 141 forms a suitable tapered air gap, and a problem that a sufficient degree of inclination is not achieved or the inclination is too serious is avoided. Optionally, the included angle between the fourth sub-deflector 1422 and the end surface of the fan assembly 12 forming the second air inlet 122 may be greater than or equal to 110 ° and less than or equal to 165 °, so that the second air duct 141 forms a suitable tapered air opening, and a problem that a sufficient degree of inclination is not achieved or the inclination is too serious is avoided.

Optionally, at least part of the aperture of the second air duct 141 may be gradually reduced along the airflow direction to accelerate the airflow, and the guiding effect is started by the attachment effect of the airflow in the tapered air duct, so as to avoid airflow turbulence and vortex in the process of flowing the oil smoke and reduce noise.

Optionally, referring to fig. 2 and fig. 3, the range hood 10 further includes an opening and closing assembly 15, where the opening and closing assembly 15 may be disposed corresponding to the second smoke suction opening 113 and connected to the housing 11, and the opening and closing assembly 15 has a first position and a second position, referring to fig. 2, where the opening and closing assembly 15 closes the second smoke suction opening 113, referring to fig. 3, and where the opening and closing assembly 15 opens the second smoke suction opening 113. Thus, when the oil smoke is more, the opening and closing assembly 15 can be positioned at the second position, so that the oil smoke can be sucked into the range hood 10 through the first smoke suction port 112 and the second smoke suction port 113, and the oil smoke absorption speed is increased; when the oil smoke is less, the opening and closing component 15 can be located at the first position, so that the oil smoke is sucked into the range hood 10 only through the first smoke suction port 112, and the power consumption of the range hood 10 in use is reduced.

Alternatively, the shutter assembly 15 may be rotatably coupled to the housing 11 such that the shutter assembly 15 may rotate relative to the housing 11 to switch between the first and second positions. Wherein, the rotation axis of the opening and closing assembly 15 rotating relative to the housing 11 is located at one side of the second smoke suction port 113 away from the first smoke suction port 112.

Optionally, the opening and closing assembly 15 may include a first cover plate 151 disposed corresponding to the first side plate 115, when the opening and closing assembly 15 is in the first position, the first cover plate 151 covers the first side plate 115 and is substantially attached to the first side plate 115, and when the opening and closing assembly 15 is in the second position, the first cover plate 151 is disposed at an included angle with the first side plate 115, so that the second smoke suction opening 113 on the first side plate 115 is opened, and the first cover plate 151 may play a role in collecting smoke.

Optionally, the opening and closing assembly 15 may further include a second cover plate 152 and a third cover plate 153, where the second cover plate 152 and the third cover plate 153 may be disposed corresponding to the second side plate 116 located at two sides of the first side plate 115, and the second cover plate 152 and the third cover plate 153 are connected to the first cover plate 151, when the opening and closing assembly 15 is located at the first position, the second cover plate 152 and the third cover plate 153 may be attached to the second side plate 116 located at two sides of the first side plate 115, and when the opening and closing assembly 15 is located at the second position, the second cover plate 152 and the third cover plate 153 may cover a gap between the first cover plate 151 and the first side plate 115.

Referring to fig. 12, the casing 11 of the range hood 10 of the present application may include a main smoke-collecting chamber casing 118 and a smoke-collecting chamber casing 119, when the range hood 10 is in use, the main smoke-collecting chamber casing 118 is located at a side of the smoke-collecting chamber casing 119 away from the plane of the cooking bench, the main smoke-collecting chamber casing 118 may be used for accommodating the blower assembly 12, the main smoke-collecting chamber casing 119 may be formed with a first smoke-absorbing port 112 and a second smoke-absorbing port 113, and a ratio of a length L3 of the main smoke-collecting chamber casing 118 to a length L4 of a cavity in the main smoke-collecting chamber casing 119: L3/L4 may be greater than or equal to 0.4 and less than or equal to 0.7 to make the fan assembly 12 less noisy and more convenient to install. Preferably, the length L3 of the main smoke machine housing 118, the length L4 of the chamber in the smoke collecting cavity housing 119, and the interval H between the end of the third baffle 134 near the hearth plane and the top of the chamber in the smoke collecting cavity housing 119 may be as follows: the angle of arctan ((L1-L2)/2/H) is less than or equal to 40 degrees and less than or equal to 75 degrees.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The foregoing disclosure is illustrative of the present application and is not to be construed as limiting the scope of the application, which is defined by the appended claims.

Claims (15)

1. A range hood, comprising:

a housing formed with a receiving chamber, a first smoking port and a second smoking port communicating with the receiving chamber;

the fan assembly is arranged in the accommodating cavity and is provided with a first air inlet and a second air inlet which is arranged at intervals with the first air inlet;

the first flow guide assembly is arranged in the accommodating cavity and forms a first air channel with the inner wall surface of the shell, and the first air channel is communicated with the first smoking port and the first air inlet;

the second flow guide assembly is arranged in the accommodating cavity and forms a second air channel with the inner wall surface of the shell, the second air channel is communicated with the second smoking port and the second air inlet, and the second air channel is mutually independent of the first air channel.

2. The range hood of claim 1, wherein at least a portion of the first duct has a diameter that decreases progressively in the airflow direction.

3. The range hood of claim 2, wherein the first duct comprises:

the first sub-air duct is communicated with the first smoking port, and the caliber of the first sub-air duct gradually decreases along the airflow direction in the first direction;

the second sub-air duct is communicated with the first sub-air duct and the first air inlet, the caliber of the second sub-air duct gradually decreases along the airflow direction in a second direction, and the second direction intersects with the first direction.

4. The range hood of claim 3 wherein the first deflector assembly comprises:

one end of the first guide plate is arranged on one side of the fan assembly where the first air inlet is located and is connected with the fan assembly, and the other end of the first guide plate extends towards the direction close to the first smoking opening and is connected with the shell;

the second guide plate is arranged on one side of the first guide plate, which is away from the fan assembly, and is close to the first smoking opening, the second guide plate and the first guide plate are respectively arranged on two opposite sides of the first smoking opening, a first sub-air channel is formed between the second guide plate and the inner wall surfaces of the first guide plate and the shell, the first sub-air channel flows upwards along the air flow, and the space between the first guide plate and the second guide plate is gradually reduced;

two third guide plates arranged at intervals are arranged on one side, away from the fan assembly, of the first guide plate and are far away from the first smoking opening, the two third guide plates are connected with the shell, a second sub-air channel is formed between the two third guide plates and the inner wall surface of the shell, and the distance between every two adjacent third guide plates is gradually reduced along the upward airflow.

5. The range hood of claim 4 wherein the first baffle comprises:

the first sub-guide plates are attached to one side of the fan assembly where the first air inlet is located, and the second sub-air channels are formed between the first sub-guide plates, the two third guide plates and the inner wall surface of the shell;

the second sub-guide plate is arranged at an included angle with the first sub-guide plate and is connected with the first sub-guide plate, the second sub-guide plate is arranged between the first sub-guide plate and the first smoking opening, and a first sub-air channel is formed between the second sub-guide plate and the second guide plate as well as between the second sub-guide plate and the inner wall surface of the shell.

6. The range hood of claim 5, wherein the second sub-baffle is connected with a first sound absorbing layer, and the first sound absorbing layer is disposed on a side of the second sub-baffle facing away from the second baffle.

7. The range hood of claim 4, wherein a second sound absorbing layer is connected to the second baffle, and the second sound absorbing layer is disposed on a side of the second baffle facing away from the first baffle; and/or

The two third guide plates are connected with a third sound absorption layer, and the third sound absorption layer comprises first sub sound absorption layers respectively arranged on two opposite surfaces of the two third guide plates and second sub sound absorption layers connected between the two first sub sound absorption layers.

8. The range hood of claim 1, wherein at least a portion of the second duct has a diameter that decreases progressively in the direction of airflow.

9. The range hood according to claim 1, wherein the first air inlet and the second air inlet are formed in opposite sides of the fan assembly, the first flow guiding assembly comprises a first flow guiding plate, one end of the first flow guiding plate is arranged on one side of the fan assembly where the first air inlet is located and is connected with the fan assembly, the second flow guiding assembly comprises a fourth flow guiding plate, one end of the fourth flow guiding plate is arranged on one side of the fan assembly where the second air inlet is located and is connected with the fan assembly, and the other end of the fourth flow guiding plate is connected with the other end of the first flow guiding plate, so that a noise reduction cavity is formed among the first flow guiding plate, the fourth flow guiding plate, the fan assembly and the inner wall surface of the shell.

10. The range hood according to claim 9, wherein a first sound absorbing layer is connected to a side of the first baffle forming the noise reduction cavity, and/or a fourth sound absorbing layer is connected to a side of the fourth baffle forming the noise reduction cavity.

11. The range hood of claim 1, wherein the housing comprises:

the bottom plate is arranged to face the hearth plane when the range hood is in use, and the first smoke suction port is formed in the bottom plate;

the first side plate is connected with the bottom plate and is arranged at an included angle with the bottom plate, the second smoking opening is formed on the first side plate, and the air suction performance of the first air inlet is higher than that of the second air inlet.

12. The range hood of claim 11, wherein the first smoke exhaust includes more than two first sub-smoke exhaust openings arranged at intervals, and the second smoke exhaust opening is arranged corresponding to the middle of two adjacent first sub-smoke exhaust openings.

13. The range hood of claim 12 wherein in a third direction the second smoking openings have an overlap region with at least one of the first sub-smoking openings, and more than two of the first sub-smoking openings are distributed in the third direction.

14. The range hood of claim 13 wherein the length dimension of the area overlapping at least one of the first sub-ports is 30% -50% of the length dimension of the first sub-ports in the third direction.

15. The range hood of claim 11 further comprising an opening and closing assembly disposed in correspondence with the second smoke vent and coupled to the housing, the opening and closing assembly having a first position in which the opening and closing assembly closes the second smoke vent and a second position in which the opening and closing assembly opens the second smoke vent; and/or

The shell further comprises a plurality of second side plates, the second side plates and the first side plates are sequentially connected to form an annular structure, and the bottom plate is arranged in the annular structure, so that a smoke collecting cavity is formed on one side, close to the hearth plane, of the bottom plate when the range hood is used; and/or

The bottom plate is in use of the range hood, and the distance between the bottom plate and the range top plane is gradually reduced along the direction from one end close to the first side plate to one end far away from the first side plate.