WO2019148994A1

WO2019148994A1 - Range hood

Info

Publication number: WO2019148994A1
Application number: PCT/CN2018/122434
Authority: WO
Inventors: 汪耀东; 张辉; 张冀喆; 谢川川; 蓝渊
Original assignee: 美的集团股份有限公司
Priority date: 2018-01-30
Filing date: 2018-12-20
Publication date: 2019-08-08
Also published as: CN108413452A

Abstract

Provided is a range hood (1), comprising: a mounting portion (10), provided with a hollow cavity; a flow guide portion (20), provided on a side wall of the mounting portion (10) and communicated with the cavity; a first smoke intake port (30), provided at the bottom of the flow guide portion (20); a second smoke intake port (40), provided on the side where the cavity is in contact with the flow guide portion (20) and located beneath the first smoke intake port (30); and wherein the bottom is the side of the flow guide portion (20) that faces an appliance (110) generating smoke. By rationally arranging a flow channel of a suction air flow, the range hood (1) guides a flow path of the air flow in the range hood (1), thus decreasing the probability of eddy current caused by the change of an air flow direction when the range hood (1) is in operation, reducing the aerodynamic drag loss during the flow of the air flow, lowering the noise of the range hood (1) when same is in operation, and strengthening the smoke gathering ability of the range hood (1) such that the air flow can flow smoothly into the range hood (1), and then increasing the amount of air suctioned per unit time of the range hood (1), improving the working efficiency, using performance and market competitiveness of the range hood (1), and reducing the energy consumption.

Description

grease pump

The present application claims priority to Chinese Patent Application No. 20181008934, filed on Jan. 30, 2010, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present application relates to the field of household appliances, and in particular to a range hood.

Background technique

Range hoods are currently entering the mainstream in the market. In some cities, the demand for hoods is developing towards high-end, personalized and intelligent. The main key components affecting the actual effect of the range hood include the fan, the air duct, the suction port structure, etc., due to the fan arrangement of different installation positions, and the appearance and manufacturing process requirements of the shape of the flow channel, the air is flowing. There is inevitably a problem of uneven distribution, which affects the distribution of velocity and pressure, which in turn leads to a non-uniform distribution of the flow field near the mouthpiece of the range hood, which is not conducive to the effect of oil-absorbing smoke. In the related art, in order to obtain better smoke extraction effect, the range hood is increasingly moving toward a trend of high air volume and high back pressure, thereby increasing the vacuum coverage of the soot suction port and overcoming the high resistance of the exhaust pipe of the high-rise building. The soot phenomenon caused. When the air volume is increased, although a better effect of sucking out the fumes is obtained, the problem of increased noise is also brought about. When the above range hood is in operation, when the airflow enters the range hood flow passage through the suction port, the air flow direction is abruptly changed, causing local eddy currents, and even there is a reverse flow phenomenon, which is opposite to the air flow direction, affecting the intake air amount, and Additional aerodynamic noise is generated, reducing product efficiency. In the worst state, although the speed of the fan is increased, the air flow of the range hood is not increased, but the noise is increased due to the local eddy current.

Summary of the invention

The present application is intended to address at least one of the technical problems existing in the related art or related art.

To this end, a first aspect of the present application proposes a range hood.

In view of this, the first aspect of the present application provides a range hood comprising: a mounting portion disposed in a hollow cavity; and a flow guiding portion disposed on a side wall of the mounting portion to be electrically connected to the cavity; a first smoking opening is disposed at a bottom of the flow guiding portion; a second smoking opening is disposed at a side of the cavity contacting the flow guiding portion, located below the first smoking opening; wherein the bottom portion is a flow guiding portion facing the generation of soot One side of the appliance.

A range hood provided by the present application includes: a mounting portion, a flow guiding portion, a first smoking port, and a second smoking port. When installing the range hood, the installation of the installation part and the wall or the cabinet is used to realize the stable and secure assembly of the range hood; further, by properly setting the structure of the diversion portion, the first smoking port and the second smoking port, The position is set such that when the range hood is working, the suction airflow of the second smoking port drives the soot movement, so that the soot is gradually gathered in the suction range of the range hood, and a part of the soot is sucked by the second smoking port, at this time part The unpumped soot continues to rise under the buoyancy of hot air, and is then sucked into the range hood by the first smoking port, that is, by reasonably setting the flow path of the soot to guide the flow direction of the soot in the range hood Moreover, the eddy current probability generated by the change of the airflow direction during the operation of the range hood is reduced, the aerodynamic drag loss when the airflow is reduced is reduced, the noise during the operation of the product is reduced, and the smoke-carrying ability of the product is enhanced, so that the soot can be smoothly Flowing into the range hood, thereby increasing the amount of suction air per unit time of the range hood, improving product efficiency, performance and market competitiveness And reduce energy consumption. At the same time, the structure is reasonable, easy to process, low in production cost, and convenient for mass production.

According to the above range hood of the present application, it is also possible to have the following additional technical features:

In the above technical solution, preferably, the angle of the side of the flow guiding portion facing away from the first smoking opening from the horizontal plane is at least 0° and does not exceed 180°.

In this technical solution, the angle between the side of the flow guiding portion facing away from the first smoking port and the horizontal plane is at least 0° and not more than 180° by reasonable setting, that is, the soot is guided by the reasonable flow path of the soot. In the flow direction of the range hood, the flow resistance loss is reduced, the flow pattern of the air flow is ensured to be smoother, the range of the smoke is expanded, the flow resistance loss of the external flow field of the range hood is reduced, and the better effect of the oil absorption smoke is achieved. At the same time, the structural arrangement reduces the overall outer dimensions of the range hood, ensures the cleanliness and simplicity of the appearance, and facilitates the hiding of the range hood inside the cabinet, reducing the occupancy rate of the cooking space.

In any one of the above aspects, preferably, the mounting portion comprises: a first mounting body; the second mounting body forms a hollow cavity with the first mounting body, and the second smoking port is disposed on the first mounting body.

In this technical solution, the mounting portion includes: a first mounting body and a second mounting body. When the range hood is working, the suction airflow of the second smoking port drives the soot movement, so that the soot is gradually gathered in the suction range of the range hood, and a part of the soot is sucked by the second smoking port, so that some of the soot enters the first installation. The first flow passage of the body is later merged into the second flow passage of the second installation body, and at this time, part of the unsucked soot continues to rise under the buoyancy of the hot air, and is then sucked into the diversion portion by the first smoking port. In the third flow path, and finally the oil smoke is transferred into the second flow path. Specifically, the first mounting body and the second mounting body may be a unitary structure or a split structure.

In any of the above aspects, preferably, the range hood further includes: a grille rotatably disposed on the first smoking port and the second smoking port.

In this technical solution, by providing a grille on the first smoking port and the second smoking port, the vortex generated by the change of the inlet airflow of the first smoking port and the second smoking port is reduced, thereby eliminating part of the airflow during the flow. The aerodynamic noise achieves the purpose of noise reduction.

In any of the above technical solutions, preferably, the length of the grid is at least 50 mm and not more than 350 mm; the width of the grid is at least 6 mm and not more than 30 mm; wherein, when the number of the grids is plural, The spacing between the grids is at least 6 mm and does not exceed 20 mm.

In this technical solution, by reasonably setting the length of the grid and the width of the grid, the length of the grid is at least 50 mm and not more than 350 mm, and the width of the grid is at least 6 mm and not more than 30 mm, thereby ensuring unit time. The airflow flow inhaled by the first smoking port and the second smoking port simultaneously reduces the running noise, improves the service performance and work efficiency of the product; further, when the number of the grille is plural, between the grilles The spacing is at least 6mm, and does not exceed 20mm. The value of the spacing between the grids can be adjusted according to the specific practical needs to enhance the function of the product and expand the range of use of the product.

In any of the above aspects, preferably, the rotation angle of the grid is at least 0° and not more than 60°.

In this technical solution, by appropriately setting the rotation angle of the grille to be at least 0° and not exceeding 60°, the adjustment of the rotation angle of the grille to adjust the inhalation of the first smoking port and the second smoking port per unit time is achieved. Airflow flow.

In any of the above aspects, preferably, the grid comprises any one or a combination of the following: a rectangular grid, a curved grid, and a curved grid.

In this technical solution, the shape of the grid is determined according to a specific practical use, such as including any one or a combination of the following: a rectangular grid, a curved grid, and a curved grid. Specifically, the square grid belongs to the category of a rectangular grid, and the shape of the grid includes, but is not limited to, the above examples.

In any of the above aspects, preferably, the range hood further includes: a flap detachably connecting a side of the flow guiding portion away from the top of the mounting portion.

In this technical solution, by providing the wing plate on the side of the flow guiding portion facing away from the top of the mounting portion, the eddy current generated by the change of the flow direction of the inlet airflow of the first smoking port and the second smoking port is reduced, thereby eliminating The aerodynamic noise of part of the airflow during the flow achieves the purpose of noise reduction. At the same time, the detachable structural arrangement facilitates the installation of the wing and subsequent disassembly and maintenance.

In any of the above aspects, preferably, the wing comprises: a connecting portion, one end of the connecting portion is detachably connected to the flow guiding portion; and the other end of the connecting portion is located below the first smoking opening.

In this technical solution, the flap includes a connecting portion and a body. The wing plate is assembled with the flow guiding portion through the connecting portion, and the body is used for reducing the eddy current generated by the change of the inlet airflow of the first smoking port and the second smoking port, thereby eliminating the aerodynamic noise of the partial airflow during the flow.

In any of the above aspects, preferably, the length of the body is at least 150 mm and not more than 300 mm; the length of the connecting portion is longer than 0 mm and does not exceed 100 mm.

In this technical solution, by reasonably setting the length of the body and the range of the length of the connecting portion, the length of the body is at least 150 mm and not more than 300 mm, and the length of the connecting portion is longer than 0 mm and not exceeding 100 mm, thereby ensuring The flow of airflow inhaled by the first smoking port per unit time reduces the eddy current generated by the change of the inlet airflow of the first smoking port and the second smoking port, thereby achieving the purpose of noise reduction.

In any of the above aspects, preferably, the number of the flaps is two, and the spacing between the two flaps is longer than 0 mm and not more than 300 mm.

In this technical solution, by reasonably setting the spacing between the two wings longer than 0 mm, and not exceeding 300 mm, the flow of soot sucked by the first smoking port and the second smoking port per unit time is reduced while the operation is reduced. Noise improves product performance and productivity.

In any of the above aspects, preferably, the flap comprises any one or a combination of the following: a rectangular wing, a curved wing, and a polygonal wing.

In this technical solution, the shape of the wing, such as a rectangular wing, a curved wing, and a polygonal wing, is determined according to a specific practical use. In particular, square wings are within the scope of rectangular wings, and the shape of the wings includes, but is not limited to, the above examples.

In any of the above aspects, preferably, the side of the flow guiding portion facing away from the first smoking opening comprises any one of the following or a combination thereof: a plane, a curved plane, and a curved surface.

In this technical solution, the shape of the side of the flow guiding portion facing away from the first smoking opening, such as a plane, a curved plane and a curved surface, is determined according to a specific practical use situation. Specifically, the shape of the side of the flow guiding portion facing away from the first smoking opening includes, but is not limited to, the above examples.

In any one of the above aspects, preferably, the flow guiding portion includes: a first end surface, the first smoking opening is disposed on the first end surface; the third end surface; the second end surface is respectively connected to the first end surface and the third end surface, respectively The second end surface is located above the first end surface; wherein the first end surface, the second end surface and the third end surface constitute a first groove structure, and the open end of the first groove structure is connected to the side wall of the mounting portion.

In any one of the above aspects, preferably, the flow guiding portion includes: a fourth end surface, the first smoking opening is disposed on the fourth end surface; the fifth end surface is connected to the fourth end surface; and the fourth end surface and the fifth end surface are second The groove structure, the open end of the second groove structure is connected to the side wall of the mounting portion.

In any of the above aspects, preferably, the flow guiding portion includes: an oil groove disposed on an inner wall of the flow guiding portion for accommodating oil stain.

In this technical solution, by providing an oil groove so that the oil smoke adheres to the inner wall of the flow guiding portion, the oil smoke drops or flows into the oil groove by gravity, thereby ensuring the cleanliness inside the flow guiding portion.

Additional aspects and advantages of the present application will become apparent in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from

1 is a schematic structural view of a range hood of one embodiment of the present application;

2 is a schematic structural view of a range hood of one embodiment of the present application;

3 is a schematic structural view of a range hood of one embodiment of the present application;

4 is a schematic structural view of a range hood of one embodiment of the present application;

Figure 5 is a schematic view showing the structure of a range hood of an embodiment of the present application;

Figure 6 is a schematic view showing the structure of a range hood of an embodiment of the present application;

Figure 7 is a schematic view showing the structure of a range hood of an embodiment of the present application;

Figure 8 is a partial structural view showing a range hood of an embodiment of the present application;

Figure 9 is a schematic view showing the structure of a range hood of an embodiment of the present application;

Figure 10 is a partial structural view showing a range hood of an embodiment of the present application;

Figure 11 is a block diagram showing the structure of a flow guiding portion of one embodiment of the present application;

Figure 12 is a schematic view showing the structure of a grid of one embodiment of the present application;

Figure 13 is a partial structural view showing a range hood of an embodiment of the present application;

Figure 14 is a view showing a comparison of the structure of a range hood of one embodiment of the present application and a first range hood in the related art;

Figure 15 shows a simulated soot diffusion cloud image of a range hood of one embodiment of the present application;

Figure 16 is a flow chart showing the simulated soot speed of the range hood of one embodiment of the present application;

Fig. 17 is a view showing a visual experimental test chart of the flow field of the range hood of one embodiment of the present application.

Wherein, the correspondence between the reference numerals and the component names in FIGS. 1 to 17 is:

1 range hood, 10 mounting part, 102 first mounting body, 104 second mounting body, 20 diversion part, 202 first end face, 204 second end face, 206 third end face, 208 oil groove, 30 first smoking port, 40 second smoking port, 50 grille, 60 wing, 60a first wing, 60b second wing, 602 joint, 604 body, 70 fan, 80 first runner, 90 second runner, 100 third Runner, 110 appliances, 120 horizontal, 130 stoves, 1' first range hood.

Detailed ways

The above objects, features and advantages of the present application will be more clearly understood from the following description of the appended claims. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the application. However, the present application may also be practiced in other different ways than those described herein. Therefore, the scope of the present application is not limited by the specifics disclosed below. Limitations of the embodiments.

A range hood 1 according to some embodiments of the present application will now be described with reference to FIGS. 1 through 17.

As shown in FIG. 1 to FIG. 3, the embodiment of the first aspect of the present application provides a range hood 1 including: a mounting portion 10 provided with a hollow cavity; and a flow guiding portion 20 disposed at the mounting portion 10. a sidewall is electrically connected to the cavity; a first smoking port 30 is disposed at a bottom of the flow guiding portion 20; and a second smoking port 40 is disposed at a side of the cavity contacting the flow guiding portion 20, at the first Below the smoking port 30; wherein the bottom portion is the side of the flow guiding portion 20 facing the appliance 110 that produces soot.

A range hood 1 provided by the present application includes a mounting portion 10, a flow guiding portion 20, a first smoking port 30, and a second smoking port 40. When the range hood 1 is installed, the range hood 1 is stably and firmly assembled by the assembly of the mounting portion 10 with the wall or the cabinet; further, by appropriately setting the flow guiding portion 20, the first smoking port 30 and the second The structure of the smoking port 40 and the setting position are such that when the range hood 1 is in operation, the suction airflow of the second smoking port 40 drives the soot movement, so that the soot is gradually gathered in the suction range of the range hood 1, and the second smoking is utilized. The port 40 sucks a part of the soot, and at this time, part of the unsucked soot continues to rise under the buoyancy of the hot air, and is then sucked into the range hood 1 by the first smoking port 30, that is, by reasonably setting the flow of the soot. The flow path guides the flow direction of the soot in the range hood 1 , thereby reducing the eddy current probability generated by the change of the air flow direction when the range hood 1 is working, reducing the aerodynamic drag loss when the air flow is flowing, and reducing the noise during product operation. The product's ability to smoke is enhanced, so that the soot can be smoothly flowed into the range hood 1, thereby increasing the amount of suction air per unit time of the range hood, improving the working efficiency and use of the product. Energy and market competitiveness, and reduce energy consumption. At the same time, the structure is reasonable, easy to process, low in production cost, and convenient for mass production.

In a specific embodiment, one side of the mounting portion 10 facing away from the wall or the cabinet is parallel to the wall or the cabinet, or the side of the mounting portion 10 facing away from the wall or the cabinet intersects the wall or the cabinet.

In one embodiment of the present application, preferably, as shown in FIG. 3, the angle a of the side of the flow guiding portion 20 facing away from the first smoking opening 30 from the horizontal plane 120 is at least 0° and does not exceed 180°.

In this embodiment, by appropriately setting the angle a between the side of the flow guiding portion 20 facing away from the first smoking port 30 and the horizontal surface 120 is at least 0°, and not exceeding 180°, that is, by appropriately setting the flow path of the soot. Guide the flow direction of the soot in the range hood 1, reduce the flow resistance loss, ensure the flow pattern of the airflow is smoother, expand the range of the smoke, reduce the flow resistance loss of the external flow field of the range hood, and achieve better suction. Fume effect. At the same time, the structural arrangement reduces the overall outer dimensions of the range hood 1 to ensure the cleanliness and simplicity of the appearance, and the hood 1 is hidden in the cabinet, which reduces the occupation rate of the cooking space.

In an embodiment of the present application, preferably, as shown in FIG. 6 to FIG. 10, the mounting portion 10 includes: a first mounting body 102; and a second mounting body 104, which is formed into a hollow cavity with the first mounting body 102. The second smoking port 40 is disposed on the first mounting body 102.

In this embodiment, the arrow indicates the flow direction of the soot, and the mounting portion 10 includes the first mounting body 102 and the second mounting body 104. When the range hood 1 is in operation, the suction airflow of the second smoking port 40 drives the soot movement, so that the soot is gradually gathered in the suction range of the range hood 1, and a part of the soot is sucked by the second smoking port 40, so that part of the soot is made. After entering the first flow channel 80 of the first mounting body 102, the second flow channel 90 of the second mounting body 104 is merged, and at this time, part of the unsucked soot continues to rise under the buoyancy of hot air, thereby being first The smoking port 30 is drawn into the third flow path 100 of the flow guiding portion 20, and finally the oil smoke is introduced into the second flow path 90. Specifically, the first mounting body 102 and the second mounting body 104 may be a unitary structure or a split structure.

In a specific embodiment, the airflow that is finally integrated to the second flow path 90 via the first flow path 80, the third flow path 100, and finally into the second flow path 90 enters the inlet of the blower 70 in the second flow path 90, and is seconded by the blower 70. The outlet of the flow path 90 discharges the range hood 1.

In a specific embodiment, the second smoking port 40 is disposed on the side of the mounting portion 10 that is in contact with the flow guiding portion 20, and is located below the first smoking port 30, the first smoking port 30 and the second smoking port. 40 cooperates with the setting, so that the airflow of the range hood 1 will flow toward the first smoking port 30 and the second smoking port 40, thereby realizing the omnidirectional, multi-angle and multi-dimensional suction airflow, ensuring the airflow in the flow process. The uniform distribution state enhances the ability to smoke, and avoids the flow of the soot with the soot flowing away from the range hood 1 to ensure the suction effect of the product.

In an embodiment of the present application, preferably, as shown in FIGS. 4 and 5, the range hood 1 further includes a grille 50 rotatably disposed on the first smoking port 30 and the second smoking port 40.

In this embodiment, by providing the grille 50 on the first smoking port 30 and the second smoking port 40, the vortex generated by the change in the flow direction of the inlet airflow of the first smoking port 30 and the second smoking port 40 is reduced. The aerodynamic noise of part of the airflow during the flow is eliminated, and the purpose of noise reduction is achieved.

In an embodiment of the present application, preferably, as shown in FIGS. 11 and 12, the length b1 of the grille 50 is at least 50 mm and not more than 350 mm; the width b2 of the grille 50 is at least 6 mm and does not exceed 30 mm. Wherein, when the number of the grids 50 is plural, the spacing b3 between the grids 50 is at least 6 mm and does not exceed 20 mm.

In the specific embodiment, the length b1 of the grille 50 is 50 mm, and the width b2 of the grille 50 is 6 mm, which further reduces the operation of the gas flow inhaled by the first smoking port 30 and the second smoking port 40 per unit time. Noise improves product performance and productivity. The length b1 of the grille 50 is 350 mm, and the width b2 of the grille 50 is 30 mm, which reduces the input of materials and reduces the production cost while ensuring the working efficiency and noise reduction effect of the product. At the same time, the flow rate of the airflow drawn by the first smoking port 30 and the second smoking port 40 per unit time can also be adjusted by adjusting the number of the grills 50 or the spacing of the grills 50.

In one embodiment of the present application, preferably, the angle of rotation of the grid 50 is at least 0° and no more than 60°.

In this embodiment, by appropriately setting the rotation angle of the grille 50 to at least 0° and not exceeding 60°, it is further achieved that the first smoking port 30 and the second time are adjusted per unit time by adjusting the rotation angle of the grille 50. The flow of air inhaled by the smoking port 40.

In one embodiment of the present application, preferably, the grid 50 comprises any one or combination of the following: a rectangular grid, a curved grid, and a curved grid.

In this embodiment, the shape of the grid 50 is determined according to a specific practical use, such as including any one or a combination of the following: a rectangular grid, a curved grid, and a curved grid. Specifically, the square grid belongs to the category of a rectangular grid, and the shape of the grid 50 includes, but is not limited to, the above examples.

In one embodiment of the present application, preferably, as shown in FIGS. 1 and 4, the range hood 1 further includes a flap 60 detachably connecting a side of the flow guiding portion 20 away from the top of the mounting portion 10.

In this embodiment, by providing the flap 60 such that it is located on the side of the flow guiding portion 20 facing away from the top of the mounting portion 10, the inlet airflow of the first smoking port 30 and the second smoking port 40 is reduced due to the change in flow direction. The eddy current, in turn, eliminates the aerodynamic noise of part of the airflow during the flow, achieving the purpose of noise reduction. At the same time, the detachable structural arrangement facilitates the installation and subsequent disassembly and maintenance of the wing panel 60.

In a particular embodiment, the flap 60 is located below the first smoking opening 30 and does not block the first smoking opening 30.

In an embodiment of the present application, preferably, as shown in FIG. 2 and FIG. 3, the wing 60 includes: a connecting portion 602, one end of the connecting portion 602 is detachably connected to the flow guiding portion 20; the body 604 is connected to the connecting portion The other end of the 602 is located below the first smoking port 30.

In this embodiment, the flap 60 includes a joint 602 and a body 604. The wing plate 60 is assembled with the flow guiding portion 20 through the connecting portion 602 for reducing the eddy current generated by the change of the inlet airflow of the first smoking port 30 and the second smoking port 40, thereby eliminating the partial airflow in the flow. Pneumatic noise.

In one embodiment of the present application, preferably, the body 604 has a length of at least 150 mm and no more than 300 mm; the length of the connecting portion 602 is longer than 0 mm and does not exceed 100 mm.

In the specific embodiment, the length of the body 604 is 150 mm, and the length of the connecting portion 602 is 1 mm, which further reduces the running noise and improves the flow of the gas sucked by the first smoking port 30 and the second smoking port 40 per unit time. Product performance and work efficiency. The length of the body 604 is 300 mm, and the length of the connecting portion 602 is 100 mm, which reduces the input of materials and reduces the production cost while ensuring the working efficiency and noise reduction effect of the product.

In one embodiment of the present application, preferably, as shown in Figures 1 and 4, the number of flaps 60 is two, and the spacing between the two flaps 60 is longer than 0 mm and no more than 300 mm.

In a specific embodiment, the two flaps 60 are a first flap 60a and a second flap 60b, respectively, and the spacing between the first flap 60a and the second flap 60b is 300 mm, which is guaranteed by the first unit time. The airflow flow drawn by the smoking port 30 and the second smoking port 40 simultaneously reduces the running noise; the distance between the first flap 60a and the second flap 60b is 1 mm, which is guaranteed by the first smoking port 30 and the unit time The flow of air inhaled by the second smoking port 40 reduces the input of materials and reduces the production cost.

In one embodiment of the present application, preferably, the flap 60 includes any one or combination of the following: a rectangular flap, a curved flap, and a fold-shaped flap.

In this embodiment, the shape of the flap 60, such as a rectangular flap, a curved flap, and a fold-shaped flap, is determined depending on the particular actual use. Specifically, the shape of the flap 60 includes, but is not limited to, the above examples.

In one embodiment of the present application, preferably, the side of the flow guiding portion 20 facing away from the first smoking port 30 includes any one or a combination of the following: a plane, a curved plane, and a curved surface.

In this embodiment, the shape of the side of the flow guiding portion 20 facing away from the first smoking port 30, such as a plane, a curved plane, and a curved surface, is determined according to a specific practical use. Specifically, the shape of the side of the flow guiding portion 20 facing away from the first smoking port 30 includes, but is not limited to, the above examples.

In an embodiment of the present application, preferably, as shown in FIG. 8, the flow guiding portion 20 includes: a first end surface 202, the first smoking port 30 is disposed on the first end surface 202; the third end surface 206; the second end surface The second end surface 204 is disposed above the first end surface 202, wherein the first end surface 202, the second end surface 204, and the third end surface 206 form a first groove structure, first The open end of the groove structure connects the side wall of the mounting portion 10.

In an embodiment of the present application, preferably, the flow guiding portion 20 includes: a fourth end surface, the first smoking port 30 is disposed on the fourth end surface; the fifth end surface is connected to the fourth end surface; the fourth end surface and the fifth end surface The second groove structure is formed, and the open end of the second groove structure is connected to the side wall of the mounting portion 10.

In an embodiment of the present application, preferably, as shown in FIG. 13, the flow guiding portion 20 includes an oil groove 208 disposed on an inner wall of the flow guiding portion 20 for containing oil stain.

In this embodiment, by providing the oil groove 208 such that the oil smoke adheres to the inner wall of the flow guiding groove, the oil smoke drops or flows into the oil groove 208 by gravity, thereby ensuring the cleanliness inside the flow guiding portion 20.

In a specific embodiment, as shown in FIG. 14, the maximum value e2 of the lateral distance of the range hood 1 of the present application in the longitudinal section is shorter than the lateral distance of the first range hood 1' in the longitudinal section of the related art. The maximum value e1, therefore, the overall outer dimensions of the range hood 1 of the present application is smaller, which ensures the cleanliness and simplicity of the appearance of the range hood 1 and facilitates the hiding of the range hood 1 in the cabinet, thereby reducing the occupation of the cooking space. rate.

In a specific embodiment, the range hood 1 has two smoking ports, respectively a first smoking port 30 and a second smoking port 40. The number of the flaps 60 is two, respectively a first flap 60a and a second flap. 60b. The first smoking port 30 is disposed at the bottom of the flow guiding portion 20, and the second smoking port 40 is disposed at a side of the cavity that is in contact with the flow guiding portion 20, and is located below the first smoking port 30. The grille 50 is rotatably disposed at the first smoking port 30 and the second smoking port 40, wherein the grille 50 includes any one or a combination of the following: a rectangular grille, a curved grille, and a curved grille. The first flap 60a and the second flap 60b are detachably coupled to the bottom of the flow guide 20, and the flap 60 includes any one or combination of the following: a rectangular wing, a curved wing, and a curved wing. The angle a between the side of the flow guiding portion 20 facing away from the first smoking port 30 and the horizontal surface 120 is at least 0°, and does not exceed 180°, and the side of the flow guiding portion 20 facing away from the first smoking port 30 includes any one of the following or The combination: a plane, an arc plane, and a line plane, wherein the arc plane is tangent to the horizontal plane 120.

In the specific embodiment, the structural arrangement of the range hood 1 reduces the overall size of the overall structure, achieves an ultra-thin design purpose, is easy to install, and is easy to hide in the cabinet.

In the specific embodiment, since the areas of the first smoking port 30 and the second smoking port 40 are different, the flow rate of the airflow taken in by the first smoking port 30 and the second smoking port 40 per unit time is different. The value range of the angle a between the side of the flow guiding portion 20 facing away from the first smoking port 30 and the horizontal surface 120 can be adjusted according to the actual use, and the flow pattern of the airflow in the third flow channel 100 can be determined, thereby reducing the flow. The resistance loss can also make the flow pattern in the vicinity of the first smoking port 30 more smooth, expand the range of smoke, reduce the flow resistance loss of the external flow field of the range hood 1, and achieve better smoke absorption effect.

In the specific embodiment, the structure of the range hood 1 of the present application not only greatly enhances the effect of the range hood of the range hood 1, but also makes the appearance of the whole machine more tidy, easy to clean oil, and reduces production and manufacturing costs, and improves Product performance and market competitiveness.

In a specific embodiment, as shown in FIG. 15, the stove 130 heats the appliance 110 placed thereon, the appliance 110 generates soot due to heat, the range hood 1 sucks soot, and the arrow indicates the flow direction of the soot flow, the range hood When working, the suction airflow of the second smoking port 40 drives the soot movement, so that the soot is gradually gathered in the suction range of the range hood 1, and a part of the soot is sucked by the second smoking port 40, so that some of the soot enters the first After the first flow channel 80 of the mounting body 102 is merged into the second flow channel 90 of the second mounting body 104, a portion of the unsucked soot continues to rise under the buoyancy of the hot air, thereby being the first smoking port. 30 is drawn into the third flow path 100 of the flow guiding portion 20, and finally the oil smoke is introduced into the second flow path 90. That is, by reasonably setting the flow channel of the soot, the flow direction of the soot in the range hood 1 is guided, thereby reducing the eddy current probability generated by the change of the airflow direction when the range hood 1 is working, and reducing the aerodynamic drag loss when the airflow is flowing, It reduces the noise during the operation of the product and strengthens the smoke-carrying ability of the product, so that the soot can be smoothly flowed into the range hood 1, thereby increasing the amount of suction air per unit time of the range hood and improving the working efficiency of the product. , use performance and market competitiveness, and reduce energy consumption.

In the specific embodiment, as shown in FIGS. 16 and 17, the arrows indicate the flow directions of the airflow in the first flow path 80, in the second flow path 90, in the third flow path 100, and in the vicinity of the first smoking port 30. By properly arranging the structure of the range hood 1, the airflow lines at the grid 50 of the first smoking port 30 and the grid 50 of the second smoking port 40 are smoothly sucked into the interior of the range hood 1, and The air flow in the vicinity of the first smoking port 30 (particularly above the first smoking port 30) is also smoothly sucked into the grill 50 of the first smoking port 30. The structural arrangement not only greatly enhances the effect of the range hood of the range hood 1, but also makes the appearance of the product more tidy, easy to clean the oil, and reduces the production and manufacturing costs.

In the present application, the term "plurality" means two or more, unless specifically defined otherwise. The terms "installation", "connected", "connected", "fixed" and the like should be understood broadly. For example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "connected" may They are directly connected or indirectly connected through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in the present application. At least one embodiment or example. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above description is only the preferred embodiment of the present application, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Claims

A range hood, wherein:

The mounting portion is provided with a hollow cavity;

a flow guiding portion disposed on a sidewall of the mounting portion and electrically connected to the cavity;

a first smoking port disposed at a bottom of the flow guiding portion;

a second smoking port disposed on a side of the cavity in contact with the flow guiding portion, located below the first smoking opening;

Wherein the bottom portion is a side of the flow guiding portion facing the appliance that generates soot.
A range hood according to claim 1, wherein

The angle of the side of the flow guiding portion facing away from the first smoking opening to the horizontal plane is at least 0° and does not exceed 180°.
A range hood according to claim 2, wherein

The mounting portion includes:

First mounting body;

a second mounting body, which forms a hollow cavity with the first mounting body;

The second smoking port is disposed on the first mounting body.
The range hood according to any one of claims 1 to 3, further comprising:

A grille rotatably disposed on the first smoking opening and the second smoking opening.
A range hood according to claim 4, wherein

The grid has a length of at least 50 mm and no more than 350 mm; the width of the grid is at least 6 mm and does not exceed 30 mm;

Wherein, when the number of the grids is plural, the spacing between the grids is at least 6 mm and does not exceed 20 mm.
A range hood according to claim 4, wherein

The angle of rotation of the grid is at least 0° and does not exceed 60°.
A range hood according to claim 4, wherein

The grid includes any one or combination of the following: a rectangular grid, a curved grid, and a curved grid.
The range hood according to any one of claims 1 to 3, further comprising:

a flap detachably connecting the bottom of the flow guiding portion.
A range hood according to claim 8, wherein

The wing panel includes:

a connecting portion, one end of the connecting portion is detachably connected to a bottom of the flow guiding portion;

The body is connected to the other end of the connecting portion under the first smoking port.
A range hood according to claim 9, wherein

The length of the body is at least 150 mm and does not exceed 300 mm;

The length of the connecting portion is longer than 0 mm and does not exceed 100 mm.
A range hood according to claim 8, wherein

The number of the flaps is two, and the spacing between the two flaps is longer than 0 mm and does not exceed 300 mm.
A range hood according to claim 8, wherein

The flaps include any one or combination of the following: a rectangular wing, a curved wing, and a fold-shaped wing.
A range hood according to any one of claims 1 to 3, wherein

The side of the flow guiding portion facing away from the first smoking opening includes any one or a combination of the following: a flat surface, a curved surface, and a curved surface.
A range hood according to any one of claims 1 to 3, wherein

The flow guiding portion includes:

a first end surface, the first smoking opening is disposed on the first end surface;

Third end face;

a second end surface respectively connecting the first end surface and the third end surface, wherein the second end surface is located above the first end surface;

The first end surface, the second end surface, and the third end surface constitute a first groove structure, and an open end of the first groove structure is connected to a sidewall of the mounting portion.
A range hood according to any one of claims 1 to 3, wherein

The flow guiding portion includes:

a fourth end surface, the first smoking opening is disposed on the fourth end surface;

a fifth end surface connecting the fourth end surface;

The fourth end surface and the fifth end surface constitute a second groove structure, and the opening end of the second groove structure is connected to the side wall of the mounting portion.
A range hood according to any one of claims 1 to 3, wherein

The flow guiding portion includes:

An oil groove is disposed on an inner wall of the flow guiding portion for accommodating oil stains.