CN220551974U

CN220551974U - Fume exhauster

Info

Publication number: CN220551974U
Application number: CN202322041414.6U
Authority: CN
Inventors: 袁柯铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-03-01
Anticipated expiration: 2033-07-31

Abstract

The utility model discloses a range hood, which comprises a fume collecting hood, a fan frame arranged above the fume collecting hood and a fan arranged in the fan frame, wherein a first air inlet and a second air inlet which are arranged left and right are formed in the fume collecting hood; the range hood also comprises a first smoke guide plate, a second smoke guide plate and an ultraviolet sterilization device; the first smoke guide plate and the second smoke guide plate can be at least in the following two states: in a closing state, the first air inlet is closed by the first smoke guide plate, and the second air inlet is closed by the second smoke guide plate; in the open state, at least one of the first smoke guide plate and the second smoke guide plate turns to the inside of the fan frame to open the corresponding air inlet, and when the two smoke guide plates are both opened and closed, the ultraviolet sterilization device is sealed in a space formed between the two smoke guide plates. Compared with the prior art, the utility model has the advantages that: the two smoke guide plates form a shielding structure in an open state to seal the ultraviolet sterilization device, so that the ultraviolet sterilization device can be isolated from the lampblack environment in the cooking process.

Description

Fume exhauster

Technical Field

The utility model relates to a lampblack purifying device, 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.

After the range hood is used for a long time, a large amount of oil stains are accumulated in the range hood, particularly in an air duct, so that bacterial microorganisms and the like are bred, or peculiar smell is generated, and the kitchen environment and even the physical health of a user are adversely affected. A range hood with purification and disinfection functions as disclosed in chinese patent application No. 201410704669.9, wherein an ultraviolet lamp and a washing device for washing the ultraviolet lamp are arranged in a wind cabinet. However, this patent has the following problems: (1) because ultraviolet lamp is in the oil smoke environment for a long time, the surface of the lamp tube is easy to accumulate greasy dirt, and the disinfection function is reduced, and although the leaching device exists, the oil smoke adhesion cavity and the cleaning effect of the leaching device are poor, and the leaching device is complex to maintain and is easy to be blocked by the greasy dirt. (2) The light source position of the lamp tube is unique, and the sterilization effect of the position where the light is blocked is reduced.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a range hood which can isolate an ultraviolet sterilization device from a lampblack environment when the range hood works so as to protect the ultraviolet sterilization device.

The second technical problem to be solved by the utility model is to provide a range hood for improving the sterilization range aiming at the defects existing in the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the range hood comprises a fume collecting hood, a fan frame arranged above the fume collecting hood and a fan arranged in the fan frame, wherein a first air inlet and a second air inlet which are arranged left and right are formed in the fume collecting hood;

the range hood also comprises a first smoke guide plate, a second smoke guide plate and an ultraviolet sterilization device; the method is characterized in that:

the first smoke guide plate and the second smoke guide plate can be at least in the following two states:

the first smoke guide plate closes the first air inlet, and the second smoke guide plate closes the second air inlet;

and when the two smoke guide plates are opened and closed, the ultraviolet sterilization device is sealed in a space formed between the two smoke guide plates.

The shielding structure is formed by the two smoke guide plates in the opening state, the ultraviolet sterilizing device can be sealed in the shielding structure (sealed space) without additionally arranging the shielding structure, and therefore, the ultraviolet sterilizing device can be isolated from the oil smoke environment in the cooking process, and the structure is simple, and no new component is needed.

Further, in order to facilitate the folding of the smoke guide plates when the smoke guide plates are opened and to close the ultraviolet sterilization device, the end parts of the two smoke guide plates, which are close to each other, are respectively first end parts, the end parts of the two smoke guide plates, which are far away from each other, are respectively second end parts, the first end parts are rotatably connected with the smoke collecting hood, and in the opened state, the second end parts are positioned in the fan frame.

Further, for being convenient for set up the smoke guide plate, the smoke collecting cover internal fixation is provided with the bottom plate, first air intake and second air intake separate with the position of bottom plate place, and first air intake is located the left side of bottom plate, and the second air intake is located the right side of bottom plate, and the first tip of every smoke guide plate rotates with the corresponding side of bottom plate respectively and is connected.

Further, the fan is a double air inlet fan and the axis extends in the left-right direction;

when the smoke collecting hood is in an open state, a space positioned on the left side of the first smoke guide plate in the smoke collecting hood and on the left side of the fan in the fan frame forms a first air channel, and/or a space positioned on the right side of the second smoke guide plate in the smoke collecting hood and on the right side of the fan in the fan frame forms a second air channel, and the first air channel and the second air channel are mutually isolated, so that even if a single smoke guide plate is opened, the ultraviolet sterilizing device can be isolated from the lampblack environment, and lampblack inhalation on two sides is facilitated.

The utility model solves the second technical problem by adopting the technical proposal that: the ultraviolet sterilizing device comprises an ultraviolet lamp, the ultraviolet lamp can rotate relative to the fan frame, the rotation axis of the ultraviolet lamp is perpendicular to the axis of the fan, the ultraviolet lamp can overturn towards air channels on two sides of the fan, different positions are irradiated in the overturning process, the problem that light is blocked is solved, and the double air channels can be used for sterilizing and disinfecting.

Further, for being convenient for set up ultraviolet lamp, ultraviolet sterilizing equipment still includes support and rocking arm, the support is fixed in collection petticoat pipe and/or fan frame, the rocking arm rotates with the support to be connected, ultraviolet lamp is fixed on the rocking arm.

Further, in order to reflect ultraviolet rays conveniently, thereby improving the sterilization effect, the ultraviolet sterilization device further comprises a reflecting shade, and the reflecting shade is arranged on one side of the ultraviolet lamp far away from the fan.

Further, in order to facilitate the expansion of the ultraviolet irradiation range, the reflector is rotatably connected with the rocker arm, and the rotation axis of the reflector is parallel to the rotation axis of the rocker arm.

Further, the reflector is protruded in the direction away from the ultraviolet lamp, and reflective materials are arranged on two surfaces of the reflector facing the ultraviolet lamp and away from the ultraviolet lamp, so that ultraviolet light can be gathered when the concave surface of the reflector faces the ultraviolet lamp, strengthening sterilization of a certain position is achieved, ultraviolet light can be scattered when the convex surface of the reflector faces the ultraviolet lamp, and multi-position and multi-angle sterilization is achieved.

Further, in order to facilitate the arrangement of the ultraviolet sterilization device, the end parts of the two smoke guide plates, which are close to each other, are respectively first end parts, and the end parts of the two smoke guide plates, which are far away from each other, are respectively second end parts;

a bottom plate is fixedly arranged in the fume collecting hood, and the first end part of each fume guide plate is respectively and rotatably connected with the corresponding side of the bottom plate; the support is fixed on the bottom plate.

Further, for form confined space when two smoke-guide plates are closed, first smoke-guide plate includes first smoke-guide plate body and encloses the first bounding wall of establishing at first smoke-guide plate body periphery, the second smoke-guide plate includes the second smoke-guide plate body and encloses the second bounding wall of establishing at second smoke-guide plate body periphery, thereby when two smoke-guide plates all open, the bounding wall of two smoke-guide plates corresponds the butt and forms confined space.

Compared with the prior art, the utility model has the advantages that: the shielding structure is formed by utilizing the two smoke guide plates in the opening state, and the ultraviolet sterilization device can be sealed in the shielding structure (sealed space) without additionally arranging the shielding structure, so that the ultraviolet sterilization device can be isolated from the oil smoke environment in the cooking process, and the structure is simple, and no additional component is needed; the ultraviolet lamp can overturn the air channels at the two sides of the fan, and irradiates different positions in the overturning process, so that the problem that light is blocked is reduced, and the double air channels can be sterilized; through setting up the reflector that has the concave-convex surface, when the concave surface of reflector just faces ultraviolet lamp, can gather together ultraviolet light, realize the enhancement to a certain position disinfects, when the convex surface of reflector just faces ultraviolet lamp, can scatter ultraviolet light, realize the multi-position multi-angle disinfects.

Drawings

Fig. 1 is a schematic view of a closed state of a range hood according to an embodiment of the present utility model;

fig. 2 is a schematic view illustrating an opened state of a range hood according to an embodiment of the present utility model;

fig. 3 is an opened state sectional view of a range hood according to an embodiment of the present utility model;

fig. 4 is an intermediate state of the range hood according to the embodiment of the present utility model from an open state to a closed state;

fig. 5 is a schematic view of a hidden fan frame, a fan and a smoke collecting hood of the range hood according to an embodiment of the present utility model;

fig. 6 is a schematic view illustrating sterilization of the two sides of the range hood in a closed state according to an embodiment of the present utility model;

fig. 7 is a schematic view of sterilization in a state that a first smoke guide plate is closed and a second smoke guide plate is opened of the range hood according to the embodiment of the utility model;

fig. 8 is a partial schematic view of an ultraviolet sterilizing apparatus of a range hood according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

Referring to fig. 1 to 5, a range hood is a top-draft range hood, and comprises a fume collecting hood 1, a fan frame 2 arranged above the fume collecting hood 1, and a fan 3 arranged in the fan frame 2. Preferably, the fan 3 is a centrifugal fan and is a double air intake fan, the axis of which extends in the left-right direction, whereby the two air inlets of the fan 3 are directed to the left and right, respectively. The blower 3 may be disposed at an intermediate position within the blower housing 2.

The fume collecting hood 1 is provided with a first air inlet 11 and a second air inlet 12 which are arranged left and right, wherein the first air inlet 11 is positioned at the left side of the second air inlet 12. The fume collecting hood 1 may be flat (the thickness in the up-down direction is smaller), and thus, the fume sucked through each air inlet directly enters the blower frame 2, unlike a common range hood, and the fume is collected through the inner space of the fume collecting hood 1 and enters the blower frame 2. The range hood further comprises a first smoke guide plate 41 for opening and closing the first air inlet 11 and a second smoke guide plate 42 for opening and closing the second air inlet 12. A bottom plate 43 is provided between the two smoke-guiding plates, each smoke-guiding plate being rotatably connected to a corresponding side of the bottom plate 43, respectively, and a rotation axis of each smoke-guiding plate extending in a front-rear direction.

The bottom plate 43 is fixed in the fume collecting hood 1, the first air inlet 11 and the second air inlet 12 are separated by the position of the bottom plate 43, the first air inlet 11 is positioned on the left side of the bottom plate 43, and the second air inlet 12 is positioned on the right side of the bottom plate 43.

The first smoke-guiding plate 41 comprises a first smoke-guiding plate body 411 and a first enclosing plate 412 which is enclosed at the peripheral edge of the first smoke-guiding plate body 411, the second smoke-guiding plate 42 comprises a second smoke-guiding plate body 421 and a second enclosing plate 422 which is enclosed at the peripheral edge of the second smoke-guiding plate body 421, and each smoke-guiding plate body and each enclosing plate are all in a flat plate shape. The first shroud 412 has at least three sides (preferably except for a first end, which is defined in detail below) surrounding the front and rear sides and the left side edges of the first smoke-guiding plate body 411, so that the first smoke-guiding plate 41 is a hollow housing, and the second shroud 422 has at least three sides (preferably except for a first end) surrounding the front and rear sides and the right side edges of the second smoke-guiding plate body 421, so that the second smoke-guiding plate 42 is a hollow housing. The first smoke guide 41 and the second smoke guide 42 are preferably each of unitary construction.

The range hood further comprises a motion mechanism for driving the first smoke guide plate 41 and the second smoke guide plate 42, the motion mechanism comprises two independent first driving mechanisms 61, the first driving mechanisms 61 are rotation driving modules, such as motors, each first driving mechanism 61 corresponds to one smoke guide plate, and each first driving mechanism 61 is in transmission connection with the rotating shaft 45 of the corresponding smoke guide plate, so that the rotating shaft 45 can be driven to rotate around the axis (extending in the front-rear direction) of the rotating shaft. Thereby driving each smoke guide to rotate relative to the base plate 43.

The first smoke-guiding plate 41 and the second smoke-guiding plate 42 can be in at least two states, the first state is a closed state and the second state is an open state. In the closed state, the first smoke guide plate 41 and the second smoke guide plate 42 are in a state of being unfolded at a maximum angle relative to the bottom plate 43, the first smoke guide plate 41 closes the first air inlet 11, the first smoke guide plate body 411 can be flush with the bottom of the first air inlet 11 to be closed, and the first coaming 412 extends into the smoke collecting hood 1 and the fan frame 2, so that the first smoke guide plate 41 is opened towards one side in the fan frame 2; the second smoke guide plate 42 closes the second air inlet 12, the second smoke guide plate body 421 is flush with the bottom of the second air inlet 12 to be closed, and the second coaming 422 extends into the smoke collecting hood 1 and the fan frame 2, so that the second smoke guide plate 42 is opened at one side facing into the fan frame 2. The closed state can prevent peculiar smell from being transmitted into a kitchen, and the preferred smoke guide plates can be clamped with the smoke collecting hood 1 in a clamping mode by adopting a common clamping connection mode and the like, and the clamping structure is not shown in the figure. The first ends of the first smoke-guiding plate 41 and the second smoke-guiding plate 42 are respectively first ends, the ends of the first smoke-guiding plate and the second smoke-guiding plate are respectively second ends, and the first ends of the smoke-guiding plates are respectively connected with the bottom plate 43 in a rotating way. In this embodiment, each smoke guide plate is rotatably connected to the bottom plate 43 via a rotation shaft 45. In the open state, at least one of the first smoke guide plate 41 and the second smoke guide plate 42 opens the corresponding air inlet, and after the first smoke guide plate 41 and the second smoke guide plate 42 are opened, the second end of each smoke guide plate is abutted against the bottom of the fan 3, so that the smoke guide plate can be matched with the fan 3, the space in the smoke collecting hood 1 and the fan frame 2 is divided into a first air channel Q1 and a second air channel Q2 which are isolated from each other, the first air channel Q1 is positioned on the left side of the first smoke guide plate 41 and the fan 3, the first air inlet 11 is communicated with the left air inlet of the fan 3, the second air channel Q2 is positioned on the right side of the second smoke guide plate 42 and the fan 3, and the second air inlet 12 is communicated with the right air inlet of the fan 3.

The upper surface of the bottom plate 43 is provided with an ultraviolet sterilization device 5, so that in the closed state, the ultraviolet sterilization device 5 is at least partially positioned in the fan frame 2 (mainly ensuring that an ultraviolet lamp 51 described below is positioned in the fan frame 2), can sterilize the fan frame 2 in the closed state of the air inlet, and can also avoid damage to users caused by ultraviolet rays. Of course, the ultraviolet sterilization device 5 may also work within the fume collection hood 1. The position of the ultraviolet sterilizing device 5 corresponds to the lower part of the bottom of the fan 3.

In the closed state, the first smoke guide plate 41 and the second smoke guide plate 42 close the corresponding air inlets, the ultraviolet sterilizing device 5 is positioned in the fan frame 2 and corresponds to the lower part of the fan 3, and at the moment, the space in the fan frame 2 can be sterilized. In the double-range cooking state, the first smoke guide plate 41 and the second smoke guide plate 42 are driven by the corresponding first driving mechanisms 61 to turn into the vertical position in the fan frame 2, the second ends of the first smoke guide plate 41 and the second smoke guide plate 42 are positioned in the fan frame 2, the ultraviolet sterilization device 5 is sealed in a sealed space formed by folding the first smoke guide plate 41 and the second smoke guide plate 42, the ultraviolet lamp is isolated from the lampblack environment in the cooking state, at the moment, all air inlets are opened, the lampblack path shown by arrows in fig. 3 is seen, and lampblack can enter the fan frame 2 from all the air inlets and be discharged by the fan 3. The arrows in fig. 4 show the direction in which each smoke guide rotates from the open state to the closed state, and the ultraviolet sterilizing device 5 is exposed to the inner cavity of the fan frame 2.

Referring again to fig. 5, the ultraviolet sterilizing device 5 includes an ultraviolet lamp 51, a support 52, and a rocker arm 53, the support 52 is fixed on the bottom plate 43, there may be two, and disposed back and forth, respectively, the rocker arm 53 also has two, each rocker arm 53 corresponds to one support 52, the rocker arm 53 and the corresponding support 52 are rotatably connected, the rotation axis extends in the front-back direction, parallel to the rotation axis 45, and perpendicular to the axis of the fan 3 (here, the perpendicular refers to absolute perpendicular or near perpendicular, such as an error within 10 °). The ultraviolet lamp 51 is fixed between the two rocker arms 53, preferably at the end of the rocker arms 53 remote from the support 52. The range hood further comprises a second driving mechanism 62 for driving the rocker arm 53 to rotate relative to the support 52, and the second driving mechanism 62 is a rotation driving module, such as a motor. Alternatively, the support 52 may be directly fixed to the hood 1 or the fan frame 2.

Referring to fig. 6, in the closed state, the second driving mechanism 62 is started to enable the ultraviolet sterilizing device 5 to rotate around the axis extending back and forth, so that sterilization can be performed in the fan frame 2, and as the ultraviolet sterilizing device 5 rotates, the air channels on the left and right sides of the fan 3 can be irradiated by the ultraviolet lamp 51, and cannot be sterilized because light is blocked. The arrow in fig. 6 indicates the direction of rotation of the ultraviolet sterilization device 5 at this time (of course, reverse rotation is also possible).

Referring to fig. 7, in a state where the first smoke guide plate 41 is closed and the second smoke guide plate 42 is opened, a flow path of the oil smoke is shown by an arrow of the second air inlet 12, and the oil smoke enters the blower 3 from the air inlet on the right side of the blower 3 after entering from the second air inlet 12. At this time, the second smoke guide plate 42 is in an open limit position and abuts against the bottom of the blower 3, thereby being matched with the blower 3, and dividing the blower frame 2 into a left space and a right space which are isolated from each other, and the ultraviolet sterilization device 5 is still in an environment isolated from oil smoke. Thus, at this time, the second driving mechanism 62 is activated, and the space inside the fan frame 2 on the left side of the fan 3 and the second smoke guide plate 42 can be sterilized. The left arrow in fig. 7 indicates the direction of rotation of the ultraviolet sterilization device 5 at this time (of course, reverse rotation is also possible).

Referring again to fig. 5 and 8, the ultraviolet sterilization device 5 further comprises a reflector 54, the reflector 54 extending between the two rocker arms 53 and being rotatably connected to the rocker arms 53 with a rotational axis parallel to the rotational axis of the rocker arms 53. The range hood further comprises a third driving mechanism 63 for driving the reflector 54 to rotate relative to the rocker arm 53, wherein the third driving mechanism 63 is a rotation driving module, such as a motor, and the rotation direction of the reflector 54 relative to the ultraviolet lamp 51 can be shown by an arrow in fig. 8. As shown in fig. 8, the reflecting cover 54 protrudes in a direction away from the ultraviolet lamp 51, and preferably has a sector cross section, and reflective materials are disposed on both sides of the reflecting cover 54 facing the ultraviolet lamp 51 and away from the ultraviolet lamp 51, so that when the concave surface of the reflecting cover 54 faces the ultraviolet lamp 51 (in the state shown in fig. 8), ultraviolet light can be gathered to realize enhanced sterilization at a certain position, and when the convex surface of the reflecting cover 54 faces the ultraviolet lamp 51, ultraviolet light can be scattered to realize multi-position and multi-angle sterilization.

Claims

1. The range hood comprises a fume collecting hood (1), a fan frame (2) arranged on the fume collecting hood (1) and a fan (3) arranged in the fan frame (2), wherein a first air inlet (11) and a second air inlet (12) which are arranged left and right are formed in the fume collecting hood (1);

the range hood also comprises a first smoke guide plate (41), a second smoke guide plate (42) and an ultraviolet sterilization device (5); the method is characterized in that:

the first smoke-guiding plate (41) and the second smoke-guiding plate (42) can be at least in the following two states:

the first smoke guide plate (41) closes the first air inlet (11), and the second smoke guide plate (42) closes the second air inlet (12);

in an open state, at least one of the first smoke guide plate (41) and the second smoke guide plate (42) is turned towards the inside of the fan frame (2) to open the corresponding air inlet, and when the two smoke guide plates are both opened and closed, the ultraviolet sterilization device (5) is sealed in a space formed between the two smoke guide plates.

2. The range hood of claim 1, wherein: the end parts of the two smoke guide plates, which are close to each other, are respectively first end parts, the end parts of the two smoke guide plates, which are far away from each other, are respectively second end parts, the first end parts are rotationally connected with the smoke collecting hood (1), and the second end parts are positioned in the fan frame (2) when the fan frame is in an open state.

3. The range hood of claim 2, wherein: the smoke collecting hood is characterized in that a bottom plate (43) is fixedly arranged in the smoke collecting hood (1), the first air inlet (11) and the second air inlet (12) are separated by the position of the bottom plate (43), the first air inlet (11) is located on the left side of the bottom plate (43), the second air inlet (12) is located on the right side of the bottom plate (43), and the first end of each smoke guide plate is respectively connected with the corresponding side of the bottom plate (43) in a rotating mode.

4. The range hood of claim 1, wherein: the fan (3) is a double air inlet fan, and the axis of the fan extends in the left-right direction;

when in an open state, a space positioned on the left side of the first smoke guide plate (41) in the smoke collecting hood (1) and on the left side of the fan (3) in the fan frame (2) forms a first air channel (Q1), and/or a space positioned on the right side of the second smoke guide plate (42) in the smoke collecting hood (1) and on the right side of the fan (3) in the fan frame (2) forms a second air channel (Q2), wherein the first air channel (Q1) and the second air channel (Q2) are mutually isolated.

5. The range hood of claim 1, wherein: the ultraviolet sterilization device (5) comprises an ultraviolet lamp (51), the ultraviolet lamp (51) can rotate relative to the fan frame (2), and the rotation axis of the ultraviolet lamp (51) is perpendicular to the axis of the fan (3).

6. The range hood of claim 5, wherein: the ultraviolet sterilization device (5) further comprises a support (52) and a rocker arm (53), the support (52) is fixed in the fume collecting hood (1) and/or the fan frame (2), the rocker arm (53) is rotationally connected with the support (52), and the ultraviolet lamp (51) is fixed on the rocker arm (53).

7. The range hood of claim 6, wherein: the ultraviolet sterilization device (5) further comprises a reflecting cover (54), and the reflecting cover (54) is arranged on one side, far away from the fan (3), of the ultraviolet lamp (51).

8. The range hood of claim 7, wherein: the reflector (54) is rotationally connected with the rocker arm (53), and the rotation axis of the reflector (54) is parallel to the rotation axis of the rocker arm (53).

9. The range hood of claim 8, wherein: the reflecting shade (54) protrudes towards the direction far away from the ultraviolet lamp (51), and reflecting materials are arranged on two surfaces of the reflecting shade (54) facing the ultraviolet lamp (51) and far away from the ultraviolet lamp (51).

10. The range hood of claim 6, wherein: the end parts of the two smoke guide plates, which are close to each other, are respectively first end parts, and the end parts of the two smoke guide plates, which are far away from each other, are respectively second end parts;

a bottom plate (43) is fixedly arranged in the smoke collecting hood (1), and the first end part of each smoke guide plate is respectively and rotatably connected with the corresponding side of the bottom plate (43); the support (52) is fixed on the bottom plate (43).

11. The range hood of claim 1, wherein: the first smoke guide plate (41) comprises a first smoke guide plate body (411) and a first coaming (412) arranged on the peripheral edge of the first smoke guide plate body (411), the second smoke guide plate (42) comprises a second smoke guide plate body (421) and a second coaming (422) arranged on the peripheral edge of the second smoke guide plate body (421), and when the two smoke guide plates are opened, the coamings of the two smoke guide plates are correspondingly abutted to form a closed space.