CN211600840U - Side-draft range hood - Google Patents

Abstract

The utility model provides a side-draught range hood, which relates to the technical field of kitchen appliances. The side-draft range hood comprises a smoke collecting hood, a main fan and a smoke guide plate, wherein the smoke collecting hood is provided with a smoke inlet and a smoke outlet, the smoke inlet is arranged on a smoke collecting panel of the smoke collecting hood, the main fan is arranged in the smoke collecting hood, and an air outlet of the main fan is communicated with the smoke outlet; the smoke collecting cover is provided with a driving component, the smoke guide plate is connected with the driving end of the driving component, and the driving component is used for driving the smoke guide plate to be close to or far away from the smoke inlet; the smoke guide plate is provided with a drainage hole, the smoke guide plate is fixedly connected with a drainage component, and the drainage component is used for driving external gas to flow to the smoke inlet through the drainage hole. The side-draft range hood has good smoking effect and low oil smoke escape amount.

Description

Side-draft range hood

Technical Field

The utility model belongs to the technical field of the kitchen appliance technique and specifically relates to a formula lampblack absorber is inhaled to side is related to.

Background

The making process of the Chinese traditional food culture comprises frying, stir-frying, baking and the like, a large amount of oil smoke is generated in the process of making food, the oil smoke not only seriously pollutes the environment of a kitchen, but also causes great harm to the body and serious harm to the body of a kitchen operator in the oil smoke environment for a long time, even can suffer from cancers, and therefore, the range hood is widely applied to the kitchen. When the range hood is used, the upward flowing process of oil smoke is easy to escape to form the phenomenon of smoke leakage, so that the smoke absorbing effect of the range hood is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a side-draught range hood to it is poor to alleviate the lampblack absorber smoking effect that exists among the prior art, the technical problem of oil smoke escape easily.

The embodiment provides a side-draft range hood, which comprises a smoke collecting hood, a main fan and a smoke guide plate, wherein the smoke collecting hood is provided with a smoke inlet and a smoke outlet, the smoke inlet is arranged on a smoke collecting panel of the smoke collecting hood, the main fan is installed in the smoke collecting hood, and an air outlet of the main fan is communicated with the smoke outlet;

the smoke collecting cover is provided with a driving assembly, the smoke guide plate is connected with the driving end of the driving assembly, and the driving assembly is used for driving the smoke guide plate to be close to or far away from the smoke inlet; the smoke guide plate is provided with a drainage hole, the smoke guide plate is fixedly connected with a drainage component, and the drainage component is used for driving external gas to flow to the smoke inlet through the drainage hole.

In an optional embodiment, the drainage assembly includes an auxiliary blower and a drainage tube, the drainage tube is mounted on the smoke guide plate, the drainage tube is provided with a drainage inlet and a drainage outlet, the drainage outlet corresponds to the drainage hole and faces the smoke inlet, and an air outlet of the auxiliary blower is communicated with the drainage inlet.

In an alternative embodiment, the drainage tube is in a closed ring shape, the drainage tube is arranged along the circumferential direction of the drainage hole, and the drainage outlet extends along the circumferential direction of the drainage tube.

In an optional embodiment, the drainage assembly further comprises an air inlet pipe, one end of the air inlet pipe is communicated with the drainage inlet, and the other end of the air inlet pipe is communicated with an air outlet of the auxiliary fan; the auxiliary fan is positioned in an installation space formed between the smoke collecting cover and the main fan, and the smoke collecting cover is provided with an air supplementing port.

In an optional embodiment, a drainage inlet of the drainage tube is an air intake head end, a position of the drainage tube opposite to the drainage inlet is an air intake tail end, and a radial cross-sectional area of the drainage tube gradually increases from the air intake head end to the air intake tail end.

In an alternative embodiment, the drainage outlet is located at an intra-annular position of the drain tube.

In an alternative embodiment, the outlet direction of the drainage outlet is towards the inside of the ring of the drainage tube.

In an alternative embodiment, the air outlet direction of the drainage outlet forms an included angle a with the horizontal plane, and the included angle a is more than 25 degrees and less than 60 degrees.

In an optional embodiment, an air guide ring is arranged around the air inlet of the main fan, and the outer edge of the air guide ring is connected with the edge of the smoke inlet in a matching manner.

In an alternative embodiment, the bleed opening has a width d, 1.5mm < d < 3 mm.

The utility model discloses side-draught range hood's beneficial effect includes:

the utility model provides a side-draught range hood, including the collection petticoat pipe that is used for forming collection smoke chamber and installs each part, be used for sucking outside oil smoke gas and exhaust main fan, be used for carrying out the smoke deflector that leads to the flow of oil smoke gas, be used for driving the smoke deflector to advance the drive assembly that the mouth carries out the shutoff or open and with outside oil smoke gas drainage to main fan in order to improve the drainage subassembly of lampblack absorber air performance.

When the range hood is used, lampblack gas is generated above the range, the driving assembly drives the smoke guide plate to move outwards relative to the smoke inlet, an air inlet area is formed between the smoke guide plate and the smoke inlet, the drainage hole in the smoke guide plate corresponds to the smoke inlet, the main fan is started, the main fan sucks the air inlet area into a negative pressure environment, and external lampblack gas enters the volute of the main fan through the air inlet area under the action of pressure difference and is discharged through the air outlet of the volute to finish the suction and discharge of the range hood on the lampblack in the kitchen; when the smoking effect of the range hood needs to be improved, the drainage assembly is opened on the basis of the operation of the main fan, the drainage assembly serves as an auxiliary power source to drive external oil smoke gas to flow to the drainage hole in the smoke guide plate and flow to the smoke inlet through the drainage hole, so that the oil smoke enters the spiral case of the main fan and is discharged through the air outlet of the spiral case, the outward escape amount of the oil smoke is reduced, and the smoking effect of the range hood is greatly improved. When the amount of oil smoke generated above the stove is less, the drainage component can be closed, and only the main fan is started; after cooking, close the main blower, drive assembly drive smoke deflector shutoff smoke inlet, smoke deflector separates the inside and outside fender of collection petticoat pipe for two independent spaces to reduce the oil smoke in the public flue and flow back to the kitchen through collection petticoat pipe and smoke inlet, cause the emergence of secondary pollution condition to the kitchen.

The drainage component of the side-draft range hood can be used as an auxiliary power source to drain external oil smoke to the main fan so as to reduce the escape amount of the oil smoke and improve the air performance and the smoking capacity of the range hood; in addition, the drainage subassembly is two independent power supplies with the main blower, and the user can select the on-off state of drainage subassembly according to actual demand to improve the practicality of lampblack absorber.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a side-suction range hood provided by an embodiment of the present invention;

fig. 2 is a schematic sectional view of a side-suction range hood provided in an embodiment of the present invention;

fig. 3 is an explosion schematic diagram of a side-draft range hood provided by an embodiment of the present invention;

fig. 4 is a schematic view of a drainage assembly in the side-draft range hood provided by the embodiment of the present invention;

FIG. 5 is a cross-sectional schematic view of the drainage assembly of FIG. 4;

FIG. 6 is a schematic radial cross-sectional view of the draft tube of FIG. 4.

Icon: 100-a smoke collecting hood; 110-a box body; 111-air supplement port; 120-a smoke collecting panel; 130-a smoke inlet; 140-a smoke outlet; 150-a glass panel; 160-lighting lamps; 200-a main fan; 210-a wind-guiding ring; 300-a smoke guide plate; 310-drainage holes; 400-a drainage assembly; 410-auxiliary blower; 420-a drainage tube; 421-a drainage inlet; 422-drainage outlet; 430-an air inlet pipe; 500-a drive assembly; 600-oil cup; 700-controller.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by "inside" and "outside" are the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or suggest that the device or element indicated by the reference must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be interpreted as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides a side-draught range hood, as shown in fig. 1-3, including a smoke collecting hood 100, a main fan 200 and a smoke guide plate 300, wherein the smoke collecting hood 100 is provided with a smoke inlet 130 and a smoke outlet 140, the smoke inlet 130 is provided on a smoke collecting panel 120 of the smoke collecting hood 100, the main fan 200 is installed in the smoke collecting hood 100, and an air outlet of the main fan 200 is communicated with the smoke outlet 140; the smoke collecting cover 100 is provided with a driving assembly 500, the smoke guide plate 300 is connected with the driving end of the driving assembly 500, and the driving assembly 500 is used for driving the smoke guide plate 300 to be close to or far away from the smoke inlet 130; the smoke guide plate 300 is provided with a drainage hole 310, the smoke guide plate 300 is fixedly connected with a drainage component 400, and the drainage component 400 is used for driving external gas to flow to the smoke inlet 130 through the drainage hole 310.

The side-draft range hood provided by the embodiment comprises a smoke collecting hood 100 for forming a smoke collecting cavity and installing each part, a main fan 200 for sucking external lampblack gas and discharging the lampblack gas, a smoke guide plate 300 for guiding the flow of the lampblack gas, a driving assembly 500 for driving the smoke guide plate 300 to close or open a smoke inlet 130, and a drainage assembly 400 for draining the external lampblack gas into the main fan 200 to improve the air performance of the range hood.

When the range hood is used, lampblack gas is generated above the range, the driving assembly 500 drives the smoke guide plate 300 to move outwards relative to the smoke inlet 130, an air inlet area is formed between the smoke guide plate 300 and the smoke inlet 130, the drainage hole 310 in the smoke guide plate 300 corresponds to the smoke inlet 130, the main fan 200 is started, the main fan 200 sucks the air inlet area into a negative pressure environment, and external lampblack gas enters the volute of the main fan 200 through the air inlet area under the action of pressure difference and is discharged through the air outlet of the volute to finish the suction and discharge of the range hood on the lampblack in the kitchen; when the smoking effect of the range hood needs to be improved, on the basis of the operation of the main fan 200, the drainage assembly 400 is opened, the drainage assembly 400 serves as an auxiliary power source to drive the external oil smoke gas to flow to the drainage hole 310 on the smoke guide plate 300 and flow to the smoke inlet 130 through the drainage hole 310, so that the oil smoke gas enters the volute of the main fan 200 and is discharged through the air outlet of the volute, the outward escape amount of the oil smoke is reduced, and the smoking effect of the range hood is greatly improved. When the amount of oil smoke generated above the cooker is less, the drainage component 400 can be closed, and only the main fan 200 is started; after cooking, the main fan 200 is closed, the driving assembly 500 drives the smoke guide plate 300 to block the smoke inlet 130, and the smoke guide plate 300 separates the inside of the smoke collecting hood 100 from the outside into two independent spaces, so that the situation that secondary pollution is caused to a kitchen when oil smoke in a common flue is returned to the kitchen through the smoke collecting hood 100 and the smoke inlet 130 is reduced.

The drainage component 400 of the side-draft range hood can be used as an auxiliary power source to drain external oil smoke to the main fan 200 so as to reduce the escape amount of the oil smoke and improve the air performance and the smoking capacity of the range hood; in addition, drainage subassembly 400 is two independent power supplies with main fan 200, and the user can select the on-off state of drainage subassembly 400 according to actual demand to improve the practicality of lampblack absorber.

Alternatively, the smoke collecting cover 100 may include a box body 110 and a smoke collecting panel 120, and the smoke inlet 130 is provided in the smoke collecting panel 120; preferably, a glass panel 150 may be disposed on the outer surface of the smoke collecting panel 120 to improve the cleanliness of the smoke collecting hood 100 and the visibility of the range hood.

Optionally, in this embodiment, as shown in fig. 4 and 5, the drainage assembly 400 includes a secondary fan 410 and a drainage tube 420, the drainage tube 420 is mounted on the smoke guide plate 300, the drainage tube 420 is provided with a drainage inlet 421 and a drainage outlet 422, the drainage outlet 422 corresponds to the drainage hole 310 and faces the smoke inlet 130, and the air outlet of the secondary fan 410 is communicated with the drainage inlet 421. Here is a specific form of the drainage assembly 400, when the drainage assembly 400 needs to be used, the auxiliary fan 410 is started, the auxiliary fan 410 drives the air to flow through the drainage inlet 421 into the drainage tube 420 and to be ejected from the drainage outlet 422, negative pressure is formed around the air flow in the process of flowing towards the smoke inlet 130, the oil smoke gas outside the smoke guide plate 300 flows towards the drainage inlet 421 under the action of pressure difference, and flows towards the smoke inlet 130 through the drainage inlet 421, and then enters the volute of the main fan 200, so as to realize drainage of the oil smoke gas.

Specifically, in the present embodiment, the draft tube 420 may have a closed ring shape, and the draft tube 420 is disposed along the circumferential direction of the drainage hole 310, and the drainage outlet 422 extends along the circumferential direction of the draft tube 420. Here, in a specific form of the drainage tube 420 and the drainage outlet 422, wherein the drainage tube 420 is disposed around the circumference of the drainage hole 310, when the drainage assembly 400 is used, the airflow is ejected through the annular drainage outlet 422 to form an airflow wall surrounding the drainage hole 310, a negative pressure region is formed in the middle of the airflow wall, and the negative pressure in the negative pressure region is higher, so that the external oil smoke gas flows to the drainage hole 310 and enters the negative pressure region under the action of the pressure difference, and then reaches the smoke inlet 130 and enters the volute of the main blower 200. The drainage tube 420 adopts an annular shape enclosing the drainage hole 310, and can generate a negative pressure area with a large pressure corresponding to the drainage hole 310, so that the drainage effect of the drainage assembly 400 is improved, the smoking effect of the range hood is correspondingly improved, and the outward escape amount of oil smoke is reduced.

Specifically, the drainage hole 310 may be a square hole, a triangular hole, a kidney-shaped hole or a circular hole, and the shape of the drainage tube 420 corresponds to the shape of the drainage hole 310; preferably, the drainage hole 310 may be a circular hole, and the drainage tube 420 and the drainage outlet holes on the drainage tube 420 are also circular correspondingly, so as to reduce pressure loss when gas flows in the drainage tube 420 and reduce pressure loss generated when oil smoke flows through the drainage hole 310, thereby improving air performance of the drainage assembly 400 and the range hood.

In this embodiment, as shown in fig. 2, 4 and 5, the flow guiding assembly 400 may further include an air inlet pipe 430, one end of the air inlet pipe 430 is communicated with the flow guiding inlet 421, and the other end is communicated with the air outlet of the auxiliary blower 410; the sub-fan 410 is located in an installation space formed between the fume collecting cover 100 and the main fan 200, and the fume collecting cover 100 is provided with an air supplement port 111. When the drainage assembly 400 is needed, the auxiliary fan 410 is turned on, an installation space is formed between the exhaust fume collecting hood 100 and the volute of the main fan 200, air outside the exhaust fume collecting hood 100 is supplied to the installation space through the air supply opening 111, the auxiliary fan 410 supplies air to the installation space, and the air flows into the drainage pipe 420 through the air inlet pipe 430 and flows to the main fan 200 through the drainage outlet 422. Alternatively, the air supplement port 111 may be provided on a side plate or a back plate of the smoke collecting hood 100 to ensure that the air supplement port 111 and the smoke inlet 130 are oriented differently, thereby reducing turbulence of the smoke gas caused by the air supplement port 111. Optionally, a rubber pad may be disposed between the sub-fan 410 and the air inlet pipe 430 to improve the connection firmness between the sub-fan 410 and the air inlet pipe 430 and reduce the vibration transmitted from the sub-fan 410 to the air inlet pipe 430 and the drainage tube 420.

Optionally, in this embodiment, as shown in fig. 2, the air inlet of the main blower 200 may be surrounded by an air guiding ring 210, and an outer edge of the air guiding ring 210 is connected to an edge of the smoke inlet 130 in a matching manner. On one hand, the arrangement of the air guide ring 210 can guide the oil fume flow flowing into the main fan 200 so as to reduce the turbulent flow generated by the direction deflection when the oil fume flow enters the main fan 200, thereby improving the air performance of the main fan 200 and reducing the noise pollution generated by the operation of the range hood; on the other hand, the main fan 200 and the smoke inlet 130 are connected together by the wind-guiding ring 210, that is, the wind-guiding ring 210, the volute of the main fan 200 and the smoke-collecting hood 100 enclose an approximately closed installation space, and the oil smoke gas flow sucked by the main fan 200 and the oil smoke gas flow guided by the guide assembly 400 can only flow into the main fan 200 and be discharged, so that the disturbed flow caused by the external oil smoke gas flow flowing into the installation space to the air inlet area of the auxiliary fan 410 is reduced, the air inlet channel of the auxiliary fan 410 and the oil smoke flowing channel are separated into two independent channels, and the smoke-absorbing effect of the range hood is correspondingly improved.

Optionally, in this embodiment, the drainage inlet 421 of the drainage tube 420 is set as an air inlet head end, the position of the drainage tube 420 opposite to the drainage inlet 421 is an air inlet tail end, and the radial cross-sectional area of the drainage tube 420 gradually increases from the air inlet head end to the air inlet tail end. The auxiliary air blower 410 drives the external air to flow into the drainage tube 420 through the drainage inlet 421, then flow from the drainage inlet 421 to the near term end from the pipeline on both sides thereof, the radial cross-sectional area of the drainage tube 420 becomes gradually larger, namely the process flow cross-section of the air flow to the air inlet end becomes gradually larger, thereby reducing the air pressure loss caused by the air flow from the air inlet head end to the near term end, correspondingly ensuring the air pressure balance of the air flow flowing out through the drainage outlet 422, correspondingly improving the negative pressure balance of the negative pressure area, improving the stability of the external oil fume air flow passing through the negative pressure area, and reducing the loss of the air flow to the air pressure.

In this embodiment, the drainage port 422 can be located at an intra-annular position of the drainage tube 420. The drainage tube 420 is installed in a matching manner with the drainage hole 310, the drainage outlet 422 is located in the position inside the ring of the drainage tube 420, the cylindrical airflow formed by the airflow ejected from the drainage outlet 422 is tangent to the inner ring of the drainage tube 420, and the external oil fume flow enters the negative pressure area and flows inwards along the cylindrical airflow, so that the bending area formed by the cylindrical airflow and the ring of the drainage tube 420 is reduced, the oil fume flow entering the negative pressure area forms a turbulent flow phenomenon in the bending area, the drainage effect of the drainage assembly 400 is reduced, and the occurrence of a larger noise pollution condition is generated.

In this embodiment, the direction of the air exiting the drainage outlet 422 is directed into the annulus of the draft tube 420. The gas in the drainage tube 420 flows out through the drainage outlet 422 along the air outlet direction of the drainage outlet 422, the flowing drainage airflow is conical, and the radial section of the conical airflow gradually decreases from the drainage outlet 422 to the smoke inlet 130, so that the radial section area of the drainage airflow flowing to the smoke inlet 130 is reduced on the basis of realizing drainage, the turbulence of the drainage airflow on the smoke absorption of the main fan 200 is correspondingly reduced, and the normal operation of the main fan 200 is ensured.

Specifically, in the present embodiment, as shown in fig. 6, the air outlet direction of the drainage outlet 422 may form an angle a with the horizontal plane, where 25 ° < a < 60 °.

Alternatively, in this embodiment, as shown in FIG. 6, the width of the drainage outlet 422 may be d, with 1.5mm < d < 3 mm. Specifically, the drainage tube 420 may be formed by rolling a rectangular plate, two long sides of the rectangular plate are enclosed into a ring shape, and the two long sides form a drainage air outlet; the outer diameter of the drainage tube 420 may be 35-40mm, and the width d of the drainage outlet 422 is 2 mm.

Optionally, in this embodiment, as shown in fig. 1 and fig. 3, the side-suction range hood may further include a controller 700, the controller 700 is installed on the smoke collecting hood 100, and the main fan 200 and the auxiliary fan 410 are both connected to the controller 700; the smoke collecting panel 120 is provided with a control panel, the control panel is connected with the controller 700, and a user can control the opening and closing of the main fan 200 and the auxiliary fan 410 through buttons or a display screen of the control panel, so that the convenience of use of the range hood is improved.

It should be noted that, the control panel is used to control the controller, and the controller controls the on/off of the main fan and the auxiliary fan according to the related program settings, which belong to the prior art and are not an improvement of the present application.

Alternatively, as shown in fig. 3, an illumination lamp 160 may be further provided on the smoke collecting hood 100, and the illumination lamp 160 is connected to the control panel. When the culinary art environment is darker, the user can open light 160 and throw light on, further improves the convenient degree of use of lampblack absorber.

Optionally, in this embodiment, as shown in fig. 1 to fig. 3, an oil cup 600 may be detachably mounted at the bottom of the smoke collecting hood 100, and the oil cup 600 can accommodate oil collected by the smoke collecting hood 100 to reduce pollution of the kitchen range by dripping oil.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. A side-draft range hood is characterized by comprising a smoke collecting hood (100), a main fan (200) and a smoke guide plate (300), wherein the smoke collecting hood (100) is provided with a smoke inlet (130) and a smoke outlet (140), the smoke inlet (130) is arranged on a smoke collecting panel (120) of the smoke collecting hood (100), the main fan (200) is installed in the smoke collecting hood (100), and an air outlet of the main fan (200) is communicated with the smoke outlet (140);

the smoke collecting cover (100) is provided with a driving assembly (500), the smoke guide plate (300) is connected with the driving end of the driving assembly (500), and the driving assembly (500) is used for driving the smoke guide plate (300) to be close to or far away from the smoke inlet (130); smoke deflector (300) are equipped with drainage hole (310), just smoke deflector (300) rigid coupling has drainage subassembly (400), drainage subassembly (400) are used for driving outside gas warp drainage hole (310) flow direction into mouth of cigarette (130).

2. The side-draft range hood according to claim 1, wherein the drainage assembly (400) comprises an auxiliary fan (410) and a drainage tube (420), the drainage tube (420) is installed on the smoke guide plate (300), the drainage tube (420) is provided with a drainage inlet (421) and a drainage outlet (422), the drainage outlet (422) corresponds to the drainage hole (310) and faces the smoke inlet (130), and an air outlet of the auxiliary fan (410) is communicated with the drainage inlet (421).

3. The side-draft range hood according to claim 2, wherein the draft tube (420) is in a closed ring shape, the draft tube (420) is disposed along a circumferential direction of the draft hole (310), and the draft outlet (422) extends along the circumferential direction of the draft tube (420).

4. The side-draft range hood according to claim 3, wherein the flow guide assembly (400) further comprises an air inlet pipe (430), one end of the air inlet pipe (430) is communicated with the flow guide inlet (421), and the other end of the air inlet pipe is communicated with an air outlet of the auxiliary fan (410); the auxiliary fan (410) is located in an installation space formed between the smoke collecting hood (100) and the main fan (200), and the smoke collecting hood (100) is provided with an air supplementing opening (111).

5. The side-draft range hood according to claim 3, wherein a drainage inlet (421) of the drainage tube (420) is an air inlet head end, a position of the drainage tube (420) opposite to the drainage inlet (421) is an air inlet tail end, and a radial cross-sectional area of the drainage tube (420) is gradually increased from the air inlet head end to the air inlet tail end.

6. A side draft range hood according to any of claims 3 to 5, wherein the bleed outlet (422) is located at an intra-annular position of the draft tube (420).

7. The side draft range hood according to claim 6, wherein an outlet direction of the outflow guide opening (422) is directed into the ring of the draft tube (420).

8. The side-draft range hood according to claim 7, wherein an included angle between the air outlet direction of the outflow guide opening (422) and a horizontal plane is a, and the included angle is more than 25 degrees and less than 60 degrees.

9. The side-draft range hood according to any one of claims 1 to 5, wherein an air guide ring (210) is arranged around the air inlet of the main fan (200), and the outer edge of the air guide ring (210) is connected with the edge of the smoke inlet (130) in a matching manner.

10. A side draft range hood according to any of claims 3 to 5, wherein the width of the outflow guide opening (422) is d, 1.5mm < d < 3 mm.

Images