CN219300844U - Fume exhaust fan - Google Patents

Abstract

The utility model provides a range hood, and relates to the technical field of kitchen appliances. The range hood provided by the utility model comprises: the fan comprises a smoke collecting hood, a fan box body, a first flow guiding component and a second flow guiding component; the bottom wall of the fan box body is provided with a communication port, the fume collecting hood is fixedly connected to the bottom wall of the fan box body and is communicated with the fan box body through the communication port, and the front wall of the fume collecting hood is provided with a fume inlet; the first flow guiding component is fixedly arranged on the inner wall of the fume collecting hood corresponding to the fume inlet, and/or the second flow guiding component is fixedly arranged on the bottom wall of the fan box. The range hood provided by the utility model solves the problems of local flow resistance increase, poor flow effect and large flow loss of the oil smoke caused by the change of the flow area in the process of the oil smoke reaching the inner part of the box body of the fan from the smoke collecting cavity.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a range hood.

Background

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

In the prior art, no matching consideration is carried out on the machine type, certain turbulence exists in the flow, and the special machine type integrally presents flat characteristics, and the length of the smoke collecting cavity and the size of the machine box body of the fan are inconsistent, so that when the lampblack flows, the flow area is instantaneously amplified in the process of reaching the interior of the machine box body of the fan from the smoke collecting cavity, the local flow resistance is instantaneously increased, the flow of fluid is blocked, the lampblack flowing effect is poor, and the flow loss is large.

Disclosure of Invention

The utility model aims to provide a range hood, which is used for solving the problems of local flow resistance increase, poor oil smoke flow effect and large flow loss caused by the change of flow area in the process that oil smoke reaches the inside of a fan box body from a smoke collecting cavity in the prior art.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the range hood provided by the utility model comprises: the fan comprises a smoke collecting hood, a fan box body, a first flow guiding component and a second flow guiding component;

the bottom wall of the fan box body is provided with a communication port, the fume collecting hood is fixedly connected to the bottom wall of the fan box body and is communicated with the fan box body through the communication port, and the front wall of the fume collecting hood is provided with a fume inlet;

the first flow guiding component is fixedly arranged on the inner wall of the fume collecting hood corresponding to the fume inlet, and/or the second flow guiding component is fixedly arranged on the bottom wall of the fan box.

As a further technical scheme, the first flow guiding component comprises at least one first flow guiding plate, the first flow guiding plate corresponds to the smoke inlet, one end of the first flow guiding plate is fixedly arranged on the side wall of the smoke collecting hood, and the other end of the first flow guiding plate is connected with the side wall of the communication port.

As a further technical scheme, the section of the first guide plate is arranged in an arc shape and is sunken towards the direction deviating from the side wall of the fume collecting hood.

As a further technical scheme, the first flow guide assembly comprises two first flow guide plates which are respectively and fixedly arranged on two side walls of the fume collecting hood.

As a further technical scheme, the first flow guiding component further comprises a first flow guiding piece, wherein the first flow guiding piece corresponds to the smoke inlet and is fixedly arranged on the front wall of the smoke collecting hood.

As a further technical scheme, the first flow guiding piece comprises an arc section and a straight line section, and the arc section is sunken towards the direction away from the front wall of the fume collecting hood;

one end of the arc section is close to the top wall of the smoke inlet and is connected with the front wall of the smoke collecting hood, the other end of the arc section extends along the height direction of the smoke collecting hood and is connected with the straight line section, and the other end of the straight line section is fixedly connected with the front wall of the smoke collecting hood.

As a further technical scheme, the circular arc section and the straight line section are connected in a smooth transition mode.

As a further technical scheme, the first guide assembly further comprises a plurality of first guide fins, the plurality of first guide fins are fixedly arranged on the circular arc section, and the plurality of first guide fins are uniformly arranged at intervals along the length direction of the first guide piece.

As a further technical scheme, the first flow guiding component further comprises a fixing piece, the fume collecting hood comprises an electric control box, and the electric control box is fixedly arranged on the inner side of the front wall of the fume collecting hood and is positioned above the fume inlet;

the mounting is fixed to be set up in first water conservancy diversion spare, is provided with the holding tank on the mounting, and when first water conservancy diversion subassembly fixed mounting in the collection petticoat pipe, the automatically controlled box is located the holding tank, and the cross-sectional shape of mounting is the shape of falling "V".

As a further technical scheme, the first flow guiding assembly further comprises two connecting plates, the two connecting plates are respectively fixedly arranged at two ends of the first flow guiding piece and are respectively fixedly connected to two side walls of the fume collecting hood, and one end of the first flow guiding plate, which is away from the communication port, is connected to the corresponding connecting plate.

As a further technical scheme, the range hood further comprises a fan, the fan is fixedly arranged in the fan box, the thickness of the fume collecting hood is smaller than that of the fan box, and the second flow guiding assembly is arranged on the bottom wall of the fan box corresponding to the communication port.

As a further technical scheme, the rear wall of the fume collecting hood is arranged flush with the rear wall of the fan box body.

As a further technical scheme, the fan is fixedly arranged on the inner side of the front wall of the fan box body, and the second flow guide assembly comprises a second flow guide plate and a mounting plate;

the mounting panel is fixed to be set up in the fan box to near the front wall setting of fan box, the second guide plate is located between the air inlet of intercommunication mouth and fan.

As a further technical scheme, the section of the second guide plate is arc-shaped and is recessed towards the direction deviating from the front wall of the fan box body.

As a further technical solution, the second flow guiding assembly further includes a plurality of second flow guiding fins, the plurality of second flow guiding fins 430 are fixedly disposed on a surface of the second flow guiding plate 410 facing away from the mounting plate 420, and the plurality of second flow guiding fins 430 are disposed at uniform intervals along the length direction of the second flow guiding plate 410.

Compared with the prior art, the range hood provided by the utility model has the technical advantages that:

the range hood provided by the utility model comprises: the fan comprises a smoke collecting hood, a fan box body, a first flow guiding component and a second flow guiding component; the bottom wall of the fan box body is provided with a communication port, the fume collecting hood is fixedly connected to the bottom wall of the fan box body and is communicated with the fan box body through the communication port, and the front wall of the fume collecting hood is provided with a fume inlet; the first flow guiding component is fixedly arranged on the inner wall of the fume collecting hood corresponding to the fume inlet, and/or the second flow guiding component is fixedly arranged on the bottom wall of the fan box. When the range hood is used for exhausting the oil smoke, the oil smoke enters the fume collecting hood from the fume inlet, passes through the fume collecting hood and reaches the box body of the fan to be exhausted. In the process that the oil smoke enters the fume collecting hood from the fume inlet, the first flow guiding component plays a role in guiding the oil smoke entering from the fume inlet, so that the oil smoke is guided to a certain extent, and the flow loss is reduced; in the process that the oil smoke reaches the fan box from the fume collecting hood, as the second flow guide assembly is fixedly arranged on the bottom wall of the fan box, the second flow guide assembly plays a role in buffering and guiding the oil smoke from the fume collecting hood to the fan box, so that the flow resistance of the joint of the fume collecting hood and the fan box is reduced, the oil smoke flow effect is improved, and the flow loss is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a first flow guiding component in a range hood according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a second flow guiding component in the range hood according to the embodiment of the present utility model;

fig. 4 is a schematic diagram of the flow of smoke in the range hood according to the embodiment of the present utility model.

Icon: 100-fume collecting hood; 110-a smoke inlet; 120-an electric control box;

200-a fan box body;

300-a first flow directing assembly; 310-a first baffle; 320-a first baffle; 321-arc segments; 322-straight line segment; 330-a first guide fin; 340-a fixing piece; 350-connecting plates; 341-a receiving groove;

400-a second flow directing assembly; 410-a second baffle; 420-mounting plate; 430-second guide fins;

500-fans;

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Physical quantities in the formulas, unless otherwise noted, are understood to be basic quantities of basic units of the international system of units, or derived quantities derived from the basic quantities by mathematical operations such as multiplication, division, differentiation, or integration.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The range hood of the present embodiment includes: the fan comprises a smoke collecting cover 100, a fan box 200, a first flow guiding component 300 and a second flow guiding component 400; the bottom wall of the fan box body 200 is provided with a communication port, the fume collecting hood 100 is fixedly connected to the bottom wall of the fan box body 200 and is communicated with the fan box body 200 through the communication port, and the front wall of the fume collecting hood 100 is provided with a fume inlet 110;

the first flow guiding component 300 is fixedly arranged on the inner wall of the fume collecting hood 100 corresponding to the fume inlet 110, and/or the second flow guiding component 400 is fixedly arranged on the bottom wall of the fan box 200.

As shown in specific combination with fig. 1 and fig. 4, only the first flow guiding component 300 may be provided, and the first flow guiding component 300 is fixedly provided on the inner wall of the fume collecting hood 100 corresponding to the fume inlet 110; only the second flow guiding component 400 may be provided, and the second flow guiding component 400 may be fixedly provided on the bottom wall of the fan case 200; or the first flow guide assembly 300 and the second flow guide assembly 400 may be provided at the same time. The specific setting mode is selected according to specific requirements, so that the technical effects that the flow resistance and the flow loss are reduced can be achieved by guiding the oil fume by the flow guide assembly when the oil fume flows in the range hood. The range hood provided in this embodiment is provided with the first guiding component 300 and the second guiding component 400 in the range hood simultaneously, the first guiding component 300 is fixedly arranged on the inner wall of the fume collecting hood 100 corresponding to the fume inlet 110, and the second guiding component 400 is fixedly arranged on the bottom wall of the fan box 200. When the range hood is used for exhausting the oil smoke, the oil smoke enters the fume collecting hood 100 from the fume inlet 110, passes through the fume collecting hood 100 and reaches the fan box 200 to be exhausted. In the process that the oil smoke enters the fume collecting hood 100 from the fume inlet 110, the first flow guiding component 300 plays a role in guiding the oil smoke entering from the fume inlet 110, so that the oil smoke is guided to a certain extent, and the flow loss is reduced; in the process that the fume reaches the fan box 200 from the fume collecting hood 100, as the second flow guide assembly 400 is fixedly arranged on the bottom wall of the fan box 200, the second flow guide assembly 400 plays a role in buffering and guiding the fume from the fume collecting hood 100 to the fan box 200, so that the flow resistance of the joint of the fume collecting hood 100 and the fan box 200 is reduced, the fume flowing effect is improved, and the flow loss is reduced.

In an alternative technical solution of this embodiment, the first flow guiding component 300 includes at least one first flow guiding plate 310, the length of the fume collecting hood 100 is greater than the length of the fan box 200, the first flow guiding plate 310 corresponds to the fume inlet 110, one end of the first flow guiding plate is fixedly arranged on the side wall of the fume collecting hood 100, and the other end of the first flow guiding plate is connected with the side wall of the communication port.

Referring specifically to fig. 1, 2 and 4, in this embodiment, the length of the fume collecting hood 100 is greater than that of the fan case 200, and the shape and size of the communication port are set corresponding to those of the cross section of the fan case 200. Since the length of the fume collecting hood 100 is greater than that of the fan case 200, the flow area is suddenly reduced when fume reaches the fan case 200 from the fume collecting hood 100, and the flow effect is affected. However, since the first deflector 310 is fixedly disposed on the side wall of the fume collecting hood 100 corresponding to the fume inlet 110, and the other end is connected with the side wall of the communication port, that is, the space in the fume collecting hood 100 is gradually contracted from the fume inlet 110 to the direction of the communication port, the first deflector 310 is matched with the inner wall of the fume collecting hood 100 to provide a certain buffering effect and flow guiding effect to the fume in the process of flowing the fume from the fume collecting hood 100 to the blower box 200, thereby avoiding the situation of abrupt change of flow area, improving the fume flow effect and reducing the flow loss.

In an alternative embodiment, the cross section of the first baffle 310 is configured as an arc and is concave in a direction away from the sidewall of the fume collecting hood 100.

Specifically, as shown in fig. 2, the fume entering the fume collecting hood 100 is gas, and the gas is light in weight and easy to diffuse. When the oil smoke enters the fume collecting hood 100 from the fume inlet 110, the oil smoke flows along one surface of the first guide plate 310 deviating from the side wall of the fume collecting hood 100, and the first guide plate 310 is set to be an arc-shaped plate and is sunken towards the direction deviating from the side wall of the fume collecting hood 100, so that the buffer effect and the flow guiding effect on the oil smoke are further improved by the first guide plate 310, the probability of turbulent flow of the oil smoke in the fume collecting hood 100 is reduced, and the oil smoke flowing effect is further improved.

In an alternative solution of this embodiment, the first deflector assembly 300 includes two first deflectors 310, and the two first deflectors 310 are respectively and fixedly disposed on two sidewalls of the fume collecting hood 100.

Specifically, referring to fig. 1, fig. 2, and fig. 3, two sidewalls of the fume collecting hood 100 are provided with first guide plates 310, one ends of the two first guide plates 310 are respectively and fixedly connected to corresponding sidewalls in the fume collecting hood 100, the other ends of the two first guide plates are respectively connected to sidewalls of the communication ports, and the thickness of the two first guide plates 310 is equal to the thickness of the interior of the fume collecting hood 100. The two first guide plates 310 are matched with the front wall and the rear wall of the fume collecting hood 100, so that the space in the fume collecting hood 100 is in an inverted funnel shape from the fume inlet 110 to the direction of the communication port, the condition that the flow area is suddenly changed is avoided in the process that the fume reaches the fan box 200 from the fume collecting hood 100, the buffering effect and the flow guiding effect on the fume are further improved, the fume flowing effect is improved, and the flow loss is reduced.

In an alternative solution of this embodiment, the first flow guiding component 300 further includes a first flow guiding element 320, where the first flow guiding element 320 is fixedly disposed on the front wall of the fume collecting hood 100 corresponding to the fume inlet 110.

Referring to fig. 1, fig. 2, and fig. 4 in detail, the length of the first flow guiding element 320 is set corresponding to the size of the smoke inlet 110, and the first flow guiding element 320 is fixedly set on the front wall of the smoke collecting hood 100 and above the smoke inlet 110 corresponding to the smoke inlet 110. Because the smoke inlet 110 is arranged on the front wall of the smoke collecting cover 100, after the smoke enters the smoke collecting cover 100 from the smoke inlet 110, the smoke flows in the direction of the fan box 200 after changing the flowing direction, and the first flow guide piece 320 arranged above the smoke inlet 110 has a guiding effect on the smoke, so that the flow direction of the auxiliary smoke is changed faster and better, the smoke is prevented from staying too long at the smoke inlet 110, and the fluidity of the smoke after entering the smoke collecting cover 100 is improved.

In an alternative technical solution of this embodiment, the first flow guiding element 320 includes an arc section 321 and a straight line section 322, where the arc section 321 is recessed in a direction away from the front wall of the fume collecting hood 100;

one end of the circular arc section 321 is close to the top wall of the smoke inlet 110 and is connected to the front wall of the smoke collecting hood 100, and the other end of the circular arc section extends along the height direction of the smoke collecting hood 100 and is connected with the straight line section 322, and the other end of the straight line section 322 is fixedly connected to the front wall of the smoke collecting hood 100.

Referring to fig. 1, fig. 2 and fig. 3, after the oil smoke enters the fume collecting hood 100 from the fume inlet 110, the arc section 321 is recessed in a direction away from the front wall of the fume collecting hood 100, and one end of the arc section 321 is close to the top wall of the fume inlet 110 and is connected to the front wall of the fume collecting hood 100, and the arc section 321 assists the oil smoke to change the flow direction and buffer the oil smoke; after the flow direction of the oil smoke is changed from the fume collecting hood 100 to the fan box 200 through the circular arc section 321, as one end of the straight line section 322 is connected with the circular arc section 321 and the other end is fixedly connected with the front wall of the fume collecting hood 100, the straight line section 322 plays a role in buffering the oil smoke, so that the oil smoke flowing through the circular arc section 321 is prevented from directly rushing towards the front wall of the fume collecting hood 100, and the flow effect is further improved.

In an alternative embodiment, the arc segment 321 and the straight segment 322 are connected in a smooth transition manner.

Specifically, in combination with fig. 1, fig. 2 and fig. 4, due to smooth transitional connection between the arc section 321 and the straight line section 322, when the oil smoke flows to the fan box 200 through the arc section 321 and the straight line section 322, the obstruction of the connection between the arc section 321 and the straight line section 322 to the oil smoke is reduced, so that the oil smoke is diffused more smoothly, and the flowing effect is further improved.

In an alternative solution of this embodiment, the first flow guiding assembly 300 further includes a plurality of first flow guiding fins 330, where the plurality of first flow guiding fins 330 are fixedly disposed on the circular arc section 321, and the plurality of first flow guiding fins 330 are disposed at uniform intervals along the length direction of the first flow guiding member 320.

Referring to fig. 1, fig. 2, and fig. 4, one end of the first guide fin 330 is fixedly connected to the arc segment 321, and a surface facing away from the arc segment 321 is set to be an arc surface and protrudes in a direction facing away from the arc segment 321. In this embodiment, the plurality of first guide fins 330 are uniformly and fixedly disposed on the circular arc segment 321 along the length direction of the first guide member 320. The plurality of first guide fins 330 cooperate with the circular arc section 321 to form a plurality of uniformly distributed first flow channels, and when the oil smoke enters the fume collecting hood 100 from the fume inlet 110, the oil smoke flows to the fan box 200 along the plurality of first flow channels under the guide effect of the circular arc section 321. The plurality of first flow channels have certain rectification effect to the oil smoke, promote the flow standardability of oil smoke, further promote the flow effect. And as the surface of the first guide fin 330 facing away from the circular arc section 321 is provided with an arc-shaped surface and protrudes towards the direction facing away from the circular arc section 321; during the flow of the oil smoke, the obstruction of the oil smoke by the first guide fins 330 can be further reduced.

In an alternative technical solution of this embodiment, the first flow guiding component 300 further includes a fixing member 340, the fume collecting hood 100 includes an electric control box 120, and the electric control box 120 is fixedly disposed on the inner side of the front wall of the fume collecting hood 100 and above the fume inlet 110;

the fixing piece 340 is fixedly arranged on the first flow guiding piece 320, the accommodating groove 341 is formed in the fixing piece 340, when the first flow guiding assembly 300 is fixedly installed in the fume collecting hood 100, the electric control box 120 is located in the accommodating groove 341, and the section shape of the fixing piece 340 is in an inverted V shape.

As shown in specific combination with fig. 1 and fig. 4, since the electronic control box 120 is disposed on the inner side of the front wall of the fume collecting hood 100, and the electronic control box 120 is located above the fume inlet 110, during the process that the fume flows after entering the fume collecting hood 100 from the fume inlet 110, the airflow contacts with the electronic control box 120, and a flow around problem occurs, so that vortex noise is caused. In the present embodiment, in order to avoid the above, a fixing member 340 is provided; the fixing piece 340 is fixedly arranged on the first flow guiding piece 320, and the section shape of the fixing piece 340 is set to be an inverted V shape; the fixing member 340 is provided with a receiving groove 341 for receiving the electronic control box 120, and the depth of the receiving groove 341 is equal to the thickness of the electronic control box 120; when the first flow directing assembly 300 is fixedly mounted within the hood 100, the electronic control box 120 is positioned within the receiving slot 341. During the airflow flowing process, the fixing member 340 is close to the side wall of the first guiding member 320 to slowly guide the airflow, so as to avoid the airflow impact on the electronic control box 120, thereby reducing the generation of vortex noise.

In an alternative technical solution of this embodiment, the first flow guiding assembly 300 further includes two connecting plates 350, where the two connecting plates 350 are respectively and fixedly disposed at two ends of the first flow guiding member 320, and are respectively and fixedly connected to two side walls of the fume collecting hood 100, and one end of the first flow guiding plate 310, which is away from the communication port, is connected to the corresponding connecting plate 350.

Specifically, referring to fig. 1, fig. 2, and fig. 4, two ends of the first flow guiding member 320 are fixedly connected to two sidewalls of the fume collecting hood 100 through corresponding connection plates 350 respectively, one end of the first flow guiding plate 310, which deviates from the communication port, is connected to the corresponding connection plates 350, so that the flow guiding effect is ensured, and meanwhile, the connection strength and connection stability between the first flow guiding member 320 and the sidewall of the fume collecting hood 100, and between the first flow guiding plate 310 and the sidewall of the fume collecting hood 100 are improved, thereby reducing noise in the use process and improving the user experience.

In the optional technical scheme of this embodiment, the range hood further includes a fan 500, the fan 500 is fixedly disposed in the fan case 200, the thickness of the fume collecting hood 100 is smaller than that of the fan case 200, and the second flow guiding component 400 is disposed on the bottom wall of the fan case 200 corresponding to the communication port.

As shown in specific combination with fig. 1 to 4, since the thickness of the fume collecting hood 100 is smaller than that of the fan housing 200, when the fume reaches the fan housing 200 through the communication port, the flow area is suddenly increased, resulting in an increase in flow loss, and thus the second flow guide assembly 400 is provided at the bottom wall of the fan housing 200. There are three situations for setting the second flow guiding assembly 400, specifically, the first one: when the communication port is arranged in the middle of the bottom wall of the fan box 200, two second flow guide assemblies 400 are arranged on the bottom wall of the fan box 200, one is close to the front wall of the fan box 200, and the other is close to the rear wall of the fan box 200; second kind: the communication port is arranged on the bottom wall of the fan box 200 and is close to the front wall of the fan box 200, and when the communication port is arranged near the front wall of the fan box 200, the bottom wall of the fan box 200 is provided with a second flow guide assembly 400 and is close to the rear wall of the fan box 200; third kind: the communication port is disposed on the bottom wall of the fan case 200 and is disposed near the rear wall of the fan case 200, and the bottom wall of the fan case 200 is provided with a second flow guiding assembly 400 and is disposed near the front wall of the fan case 200. The specific setting mode is set according to specific requirements, and the technical effect of suddenly increasing the flow area when the oil smoke reaches the fan box 200 through the communication port can be improved by assisting through the second flow guide assembly 400.

When the oil smoke reaches the fan box 200 through the communication port, as the bottom wall of the fan box 200 is correspondingly provided with the second flow guide assembly 400 and the communication port, the flow area is gradually increased, the oil smoke is buffered, and the situation that the flow loss is increased due to the sudden increase of the flow area is effectively avoided.

In an alternative solution of this embodiment, the rear wall of the fume collecting hood 100 is flush with the rear wall of the fan housing 200.

Referring to fig. 1 and fig. 4 specifically, in this embodiment, the rear wall of the fume collecting hood 100 is flush with the rear wall of the fan case 200, that is, the second flow guiding assembly 400 is set in the third condition, the inner side of the rear wall of the fume collecting hood 100 is flush with the inner side of the rear wall of the fan case 200, and the second flow guiding assembly 400 is fixedly disposed on the bottom wall of the fan case 200 and is disposed near the front wall of the fan case 200. When the oil smoke reaches the fan box 200 through the communication port, the second diversion assembly 400 effectively avoids the situation that the flow loss is increased because the flow area is suddenly increased, and simultaneously guides the oil smoke to better flow and spread in the fan box 200, so that the flow loss is reduced.

In an alternative solution of this embodiment, the fan 500 is fixedly disposed inside the front wall of the fan case 200, and the second flow guiding assembly 400 includes a second flow guiding plate 410 and a mounting plate 420;

the mounting plate 420 is fixedly disposed on the fan case 200 and is disposed near the front wall of the fan case 200, and the second deflector 410 is disposed between the communication port and the air inlet of the fan 500.

Specifically referring to fig. 1, 3 and 4, the blower 500 is fixedly disposed inside the front wall of the blower box 200, the air inlet of the blower 500 is disposed on the end surface of the blower 500 facing away from the front wall of the blower box 200, and the length of the second deflector 410 is corresponding to the length of the communication port. Because the second deflector 410 is positioned between the communication port and the air inlet of the fan 500, in the process of flowing the oil smoke from the communication port to the fan 500, the second deflector 410 is matched with the inner wall of the fan box 200, so that a certain buffer effect and a deflector effect are provided for the oil smoke, the flowing effect of the oil smoke is improved, and the flowing loss is reduced; meanwhile, as the other end of the second guide plate 410 is abutted against the end face of the fan 500, which is away from the front wall of the fan case 200, the oil smoke can be guided to enter the fan 500 from the air inlet well and then be discharged. In addition, the mounting plate 420 may be provided as a flat plate or a bent plate. In this embodiment, the mounting plate 420 is configured as a bending plate, so as to further improve the strength of the second flow guiding assembly 400.

In an alternative embodiment, the cross section of the second baffle 410 is configured as an arc shape and is recessed in a direction away from the front wall of the fan housing 200.

Specifically, as shown in fig. 1, 3 and 4, the oil smoke entering the fan case 200 is gas, and the gas is light in weight and easy to diffuse. When the oil smoke enters the fan box 200 from the communication port, the oil smoke flows along the second guide plate 410, and as the second guide plate 410 is set to be an arc plate and is sunken towards the direction deviating from the front wall of the fan box 200, the second guide plate 410 further improves the buffering effect and the guiding effect on the oil smoke, reduces the probability of turbulent flow of the oil smoke in the fan box 200, and further improves the oil smoke flowing effect.

In an alternative solution of this embodiment, the second flow guiding assembly 400 further includes a plurality of second flow guiding fins 430, where the plurality of second flow guiding fins 430 are fixedly disposed on a surface of the second flow guiding plate 410 facing away from the mounting plate 420, and the plurality of second flow guiding fins 430 are disposed at uniform intervals along the length direction of the second flow guiding plate 410.

Referring to fig. 1, 3 and 4, one end of the second guide fin 430 is fixedly connected to a surface of the second guide plate 410 facing away from the front wall of the fan case 200, and the surface facing away from the second guide plate 410 is configured as an arc surface and protrudes in a direction facing away from the second guide plate 410. In this embodiment, the plurality of second guide fins 430 are fixedly disposed on a surface of the second guide plate 410 facing away from the mounting plate 420, and the plurality of second guide fins 430 are disposed at intervals along the length direction of the second guide plate 410. The plurality of second guide fins 430 cooperate with the second guide plate 410 to form a plurality of second flow channels which are uniformly distributed, and when the oil smoke enters the fan box 200 from the communication port, the oil smoke flows to the fan 500 along the plurality of second flow channels under the guide action of the second guide plate 410. The plurality of second flow channels have certain rectification effect to the oil smoke, promote the flow standardability of oil smoke, further promote the flow effect. And since the surface of the second guide fin 430 facing away from the second guide plate 410 is provided as an arc surface, and protrudes in a direction facing away from the second guide plate 410; during the flow of the oil smoke, the obstruction of the oil smoke by the second guide fins 430 can be further reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (15)

1. A range hood, comprising: the fan comprises a smoke collecting cover (100), a fan box body (200), a first flow guiding component (300) and a second flow guiding component (400);

the bottom wall of the fan box body (200) is provided with a communication port, the fume collecting hood (100) is fixedly connected to the bottom wall of the fan box body (200) and is communicated with the fan box body (200) through the communication port, and the front wall of the fume collecting hood (100) is provided with a fume inlet (110);

the first flow guiding component (300) is fixedly arranged on the inner wall of the fume collecting hood (100) corresponding to the fume inlet (110), and/or the second flow guiding component (400) is fixedly arranged on the bottom wall of the fan box body (200).

2. The range hood according to claim 1, wherein the first deflector assembly (300) comprises at least one first deflector (310), the first deflector (310) corresponds to the smoke inlet (110), one end is fixedly arranged on the side wall of the smoke collecting hood (100), and the other end is connected with the side wall of the communication port.

3. A range hood according to claim 2, wherein the first deflector (310) is arcuate in cross-section and concave in a direction away from the side wall of the range hood (100).

4. A range hood according to claim 3, wherein the first deflector assembly (300) comprises two first deflectors (310), and the two first deflectors (310) are fixedly arranged on two side walls of the fume collecting hood (100), respectively.

5. The range hood according to claim 2, wherein the first deflector assembly (300) further comprises a first deflector (320), and the first deflector (320) is fixedly disposed on a front wall of the fume collecting hood (100) corresponding to the fume inlet (110).

6. The range hood according to claim 5, wherein the first deflector (320) comprises an arc segment (321) and a straight segment (322), the arc segment (321) being concave in a direction away from the front wall of the range hood (100);

one end of the arc section (321) is close to the top wall of the smoke inlet (110) and is connected to the front wall of the smoke collecting hood (100), the other end of the arc section extends along the height direction of the smoke collecting hood (100) and is connected with the straight section (322), and the other end of the straight section (322) is fixedly connected to the front wall of the smoke collecting hood (100).

7. The range hood according to claim 6, wherein the circular arc section (321) and the straight section (322) are smoothly connected.

8. The range hood according to claim 6, wherein the first guide assembly (300) further comprises a plurality of first guide fins (330), the plurality of first guide fins (330) are fixedly disposed on the circular arc section (321), and the plurality of first guide fins (330) are uniformly spaced along the length direction of the first guide member (320).

9. The range hood according to claim 5, wherein the first deflector assembly (300) further comprises a fixing member (340), the fume collecting hood (100) comprises an electric control box (120), and the electric control box (120) is fixedly arranged on the inner side of the front wall of the fume collecting hood (100) and above the fume inlet (110);

the utility model discloses a gas-liquid separation device, including mounting (340), mounting (340) are fixed to be set up in first water conservancy diversion spare (320), be provided with holding tank (341) on mounting (340), work as first water conservancy diversion subassembly (300) fixed mounting in collection petticoat pipe (100), automatically controlled box (120) are located in holding tank (341), just the cross-sectional shape of mounting (340) is the shape of falling "V".

10. The range hood according to any one of claims 5 to 9, wherein the first deflector assembly (300) further comprises two connecting plates (350), the two connecting plates (350) are respectively fixedly arranged at two ends of the first deflector (320) and are respectively fixedly connected to two side walls of the fume collecting hood (100), and one end of the first deflector (310) facing away from the communication port is connected to the corresponding connecting plate (350).

11. The range hood according to claim 2, further comprising a fan (500), wherein the fan (500) is fixedly disposed in the fan box (200), the thickness of the fume collecting hood (100) is smaller than that of the fan box (200), and the second flow guiding component (400) is disposed on the bottom wall of the fan box (200) corresponding to the communication port.

12. The range hood according to claim 11, wherein the rear wall of the fume collection hood (100) is disposed flush with the rear wall of the fan housing (200).

13. The range hood of claim 12, wherein the blower (500) is fixedly disposed inside a front wall of the blower housing (200), and the second deflector assembly (400) includes a second deflector (410) and a mounting plate (420);

the mounting plate (420) is fixedly arranged on the fan box body (200) and is close to the front wall of the fan box body (200), and the second guide plate (410) is positioned between the communication port and the air inlet of the fan (500).

14. The range hood according to claim 13, wherein the second deflector (410) is arcuate in cross-section and concave in a direction away from the front wall of the fan housing (200).

15. The range hood according to claim 13, wherein the second guide assembly (400) further comprises a plurality of second guide fins (430), the plurality of second guide fins (430) are fixedly disposed on a surface of the second guide plate (410) facing away from the mounting plate (420), and the plurality of second guide fins (430) are disposed at uniform intervals along a length direction of the second guide plate (410).

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