Range hood

Abstract

The present application relates to the technical field of kitchen appliances, and discloses an oil fume exhauster, wherein the shell has a smoke collecting cavity, a front smoke inlet, a side smoke inlet and a smoke outlet, the fan is arranged in the smoke collecting cavity and located behind the front smoke inlet, the gas entering the volute of the fan from the front air inlet of the fan or the rear air inlet of the fan flows to the smoke outlet through the air outlet of the fan, the motor of the fan is located behind the impeller, the guide plate is arranged on the shell and moves between a first open position and a first closed position to open or close the front smoke inlet, the front smoke inlet, the smoke collecting cavity and the front air inlet are communicated when the guide plate is located at the first open position, the cover is arranged on the shell and moves between a second open position and a second closed position to open or close the side smoke inlet, the side smoke inlet, the smoke collecting cavity and the rear air inlet are communicated when the cover is located at the second open position, and the driving mechanism drives the guide plate and the cover to open or close synchronously. The above arrangement ensures the efficiency of the fan.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to a range hood. Background Technology

[0002] Ultra-thin range hoods (typically ≤250mm thick) need to be installed behind the cooktop, their main advantages being space saving and improved aesthetics. To enhance their smoke extraction efficiency, ultra-thin range hoods generally increase the fan speed. The fan typically consists of a motor and an impeller connected to the motor's output. High-speed fans require the motor to maintain high rotational speeds, leading to higher motor temperatures, which in turn affects motor performance, reduces fan efficiency, and even shortens its lifespan. Furthermore, when using cooking appliances like electric pressure cookers on either side of an ultra-thin range hood, the smoke extraction effect is poor, impacting the user experience.

[0003] Therefore, there is an urgent need to research a range hood to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a range hood that solves the problems in the prior art where the high motor temperature affects the efficiency of the fan, and the poor smoke extraction effect when cooking utensils are used on the left and right sides of the range hood.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A range hood, comprising:

[0007] The outer casing has a smoke collection chamber and a front smoke inlet, a side smoke inlet and a smoke outlet communicating with the smoke collection chamber. The front smoke inlet is located on the front side of the outer casing, and the side smoke inlet is located on at least one side of the outer casing along its length.

[0008] A fan is provided inside the smoke collection chamber and located behind the inlet. Gas entering the volute of the fan from the front inlet or the rear inlet of the fan flows to the outlet through the outlet of the fan. The motor of the fan is located behind the impeller.

[0009] A guide plate is disposed on the outer casing and moves between a first open position and a first closed position to open or close the forward smoke inlet; when the guide plate is in the first open position, the forward smoke inlet, the smoke collection chamber, and the front air inlet are connected.

[0010] A flip cover is disposed on the outer casing and moves between a second open position and a second closed position to open or close the side smoke inlet; when the flip cover is in the second open position, the side smoke inlet, the smoke collection chamber, and the rear air inlet are connected.

[0011] A driving mechanism having at least two output members, each of the output members being hingedly connected to the guide plate and the cover, the two output members moving synchronously to drive the guide plate and the cover to open or close synchronously.

[0012] As an alternative technical solution of the range hood, the cover is inclined when opened, and is inclined backward from the outside to the direction of the smoke collecting cavity to guide the smoke entering from the side smoke inlet to flow backward to the rear side of the smoke collecting cavity to enter the volute of the fan from the rear air inlet of the fan; and / or,

[0013] The guide plate is inclined when opened, and is inclined forward from top to bottom to intercept the oil fume escaping upward.

[0014] As an alternative technical solution of the range hood, the cover comprises a cover body and a rotating part arranged on the cover body and matched with the shell, the axis of the rotating part extends along the height direction of the shell; when the cover is located at the second closed position, the rotating part is located at the rear side of the cover body, the cover is rotated outward to open the side smoke inlet; the included angle between the cover located at the second open position and the vertical plane of the side smoke inlet is less than 90°.

[0015] As an alternative technical solution of the range hood, along the height direction of the shell, one rotating shaft is arranged at each of the upper and lower ends of the cover body to form the rotating part, the shell is provided with two open rotating grooves opposite to each other, and each rotating shaft is rotatably arranged in the corresponding rotating groove.

[0016] As an alternative technical solution of the range hood, the driving mechanism further comprises a driving member and a moving member, the driving member is arranged in the shell, the moving member is movably arranged in the shell along the thickness direction of the shell, and is in transmission connection with the output end of the driving member, the output member connected with the cover is movably arranged in the shell along the length direction of the shell, each output member has a matching part, the moving member is provided with a guide part, and the guide part is in sliding matching with the matching part.

[0017] As an alternative technical solution of the range hood, the moving member is provided with a first sliding groove extending from the rear to the front and outward to form the guide part, one end of the output member is provided with a sliding block to form the matching part, the sliding block is slidably arranged in the first sliding groove, and the moving member is capable of driving the sliding block to move to drive the cover to move to the second open position during the forward movement of the moving member.

[0018] As an optional technical scheme of the range hood, the first sliding groove is a T-shaped groove with an opening facing the output member, and the sliding block is spherical.

[0019] As an optional technical scheme of the range hood, the driving mechanism comprises a sliding base arranged in the shell, and the moving member is slidingly arranged in the sliding base.

[0020] As an optional technical scheme of the range hood, the length direction of the shell is provided with two side smoke inlets communicating with the smoke collecting cavity.

[0021] The upper end of the guide plate is hinged to the shell, and the guide plate is provided with a hinge part.

[0022] As an optional technical scheme of the range hood, the moving member comprises a moving body and an extension rod.

[0023] As an optional technical scheme of the range hood, the moving body is located in the smoke collecting cavity, and in the thickness direction of the shell, the moving body is located on the rear side of the middle line of the side smoke inlet.

[0024] The driving member is located in the smoke collecting cavity and on the right side or the left side of the fan.

[0025] As an optional technical scheme of the range hood, two side smoke inlets are arranged on the two sides of the length direction of the shell and are communicated with the smoke collecting cavity.

[0026] As an optional technical scheme of the range hood, the driving mechanism is arranged in the shell and is located at the top of the smoke collecting cavity.

[0027] As an optional technical scheme of the range hood, the range hood further comprises a first filter screen arranged at the front smoke inlet, and / or,

[0028] The range hood further comprises a second filter screen arranged at the side smoke inlet

[0029] The range hood has at least the following beneficial effects:

[0030] The range hood comprises a shell, a fan, a guide plate, a flip cover and a driving mechanism, wherein the shell has a smoke collecting cavity, a front smoke inlet, a side smoke inlet and an outlet communicated with the smoke collecting cavity, the front smoke inlet is arranged on the front side of the shell, and the side smoke inlet is arranged on at least one side of the length direction of the shell; the fan is arranged in the smoke collecting cavity and is located behind the front smoke inlet, gas entering the volute of the fan from the front air inlet of the fan or the rear air inlet of the fan flows to the outlet through the air outlet of the fan, wherein the motor of the fan is located at least partially behind the impeller; the guide plate is arranged on the shell and moves between a first open position and a first closed position to open or close the front smoke inlet; when the guide plate is located at the first open position, the front smoke inlet, the smoke collecting cavity and the front air inlet are communicated; the flip cover is arranged on the shell and moves between a second open position and a second closed position to open or close the side smoke inlet; when the flip cover is located at the second open position, the side smoke inlet, the smoke collecting cavity and the rear air inlet are communicated; the driving mechanism has at least two output members, the at least two output members are respectively hinged to the guide plate and the flip cover, and the two output members move synchronously to drive the guide plate and the flip cover to open or close synchronously.

[0031] Through the arrangement of the side smoke inlet, gas on one side of the length direction of the shell enters the smoke collecting cavity through the side smoke inlet and then enters the volute at the rear air inlet of the fan, in this process, the gas passes through the motor of the fan and carries away the heat generated by the motor, thereby cooling the motor and keeping the temperature of the motor within a preset range, so as to facilitate the guarantee of the efficiency and service life of the fan.

[0032] Even if an electric pressure cooker or other cooker is used beside the range hood on the cooking bench, the oil fume or steam can be sucked through the side smoke inlet, so as to guarantee the suction effect and cool the motor to guarantee the efficiency of the fan.

[0033] The driving mechanism drives the flip cover and the guide plate simultaneously, thereby saving cost. When the flip cover and the guide plate are opened simultaneously, the smoke inlet area is large, thereby enabling more oil fume to be sucked and enabling the motor to be cooled, and more application scenarios are adapted. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the contents of the embodiments of the present application and the drawings without any creative effort.

[0035] Figure 1 It is a structural schematic diagram of the range hood in the embodiment of the present application, and the flip cover is located at the second closed position.

[0036] Figure 2 It is a structural schematic diagram of the range hood in the embodiment of the present application, and the flip cover is located at the second opened position.

[0037] Figure 3 It is a structural schematic diagram of the range hood in the embodiment of the present application, and the flip cover is located at the second opened position.

[0038] Figure 4 It is a structural schematic diagram of the range hood in the embodiment of the present application, and the flip cover is located at the second opened position.

[0039] Figure 5 It is a structural schematic diagram of the range hood in the embodiment of the present application, and the flip cover is located at the second opened position.

[0040] Figure 6 It is a structural schematic diagram of the range hood in the embodiment of the present application, and the flip cover is located at the second opened position.

[0041] In the drawings:

[0042] 100, housing; 110, smoke collecting cavity; 120, front smoke inlet; 130, side smoke inlet; 140, smoke outlet;

[0043] 200, fan; 210, motor; 220, impeller; 230, front air inlet; 240, rear air inlet;

[0044] 300, guide plate;

[0045] 400, flip cover; 410, cover body; 420, rotating part;

[0046] 500, driving mechanism; 510, driving piece; 520, moving piece; 521, moving body; 5211, first sliding groove; 522, extension rod; 530, output piece; 531, sliding block; 532, sliding rod; 533, hinged rod; 540, sliding base; 541, sliding rail; 550, transfer piece;

[0047] 610, first filter screen; 620, second filter screen. DETAILED DESCRIPTION

[0048] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0049] In this application, the terms "include", "comprise", "have", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that include a series of elements are not limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without more limitations, the element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0050] In this application, the term "and / or", is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, A and / or B, can represent the following three cases: A exists alone, A and B exist together, B exists alone. In addition, the character " / " in this application generally represents that the front and rear associated objects are in a "and / or" relationship.

[0051] In this application, the terms "connection", "combination", "coupling", "installation" can be direct connection, combination, coupling or installation, or indirect connection, combination, coupling or installation. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, and indirect connection refers to the connection of two parts or components with at least one intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0052] In this application, those of ordinary skill in the art will appreciate that the use of relative terms (e.g., "about," "approximately," "substantially" and the like) in connection with a quantity or condition will be understood to encompass the stated value and possess the meaning dictated by the context. For example, such relative terms can encompass at least an error range associated with a measurement of the particular value, a tolerance in the particular value resulting from manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms can refer to a percentage (e.g., 1%, 5%, 10% or more) of the indicated value plus or minus. Values that do not employ relative terms should also be disclosed as specific values with tolerances. Further, "substantially" when used in the context of relative angular positional relationships (e.g., substantially parallel, substantially perpendicular) can refer to plus or minus a certain number of degrees (e.g., 1 degree, 5 degrees, 10 degrees or more) from the indicated angle.

[0053] In this application, those of ordinary skill in the art will appreciate that a function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, a function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0054] In this application, the terms "upper," "lower," "left," "right," "front," "back," and the like refer to the orientation and position as shown in the drawings, and should not be interpreted as limitations on the embodiments of the present application. In addition, it should be understood that when an element is referred to as being connected to another element, it can be directly connected to the other element, or indirectly connected to the other element through an intervening element. It should also be understood that the terms "upper," "lower," "left," "right," "front," "back," and the like can refer to a positive orientation, or can be interpreted as a lateral orientation. For example, "lower" can include directly below, left below, right below, front below, and back below, etc.

[0055] As Figures 1 to 6As shown, the oil fume extractor provided by the embodiment includes a housing 100, a fan 200, a guide plate 300, a flip cover 400, and a driving mechanism 500. The housing 100 has a smoke collecting cavity 110, a front smoke inlet 120, a side smoke inlet 130, and a smoke outlet 140. The front smoke inlet 120 is arranged at the front side of the housing 100, and the side smoke inlet 130 is arranged at at least one side of the housing 100 in the length direction. The fan 200 is arranged in the smoke collecting cavity 110 and located behind the front smoke inlet 120. The gas entering the volute of the fan 200 from the front air inlet 230 of the fan 200 or the rear air inlet 240 of the fan 200 flows to the smoke outlet 140 through the air outlet of the fan 200. The motor 210 of the fan 200 is at least partially located behind the impeller 220. The guide plate 300 is arranged on the housing 100 and moves between a first open position and a first closed position to open or close the front smoke inlet 120. When the guide plate 300 is located at the first open position, the front smoke inlet 120, the smoke collecting cavity 110, and the front air inlet 230 are communicated. The flip cover 400 is arranged on the housing 100 and moves between a second open position and a second closed position to open or close the side smoke inlet 130. When the flip cover 400 is located at the second open position, the side smoke inlet 130, the smoke collecting cavity 110, and the rear air inlet 240 are communicated. The driving mechanism 500 has at least two output members 530, which are respectively hinged to the guide plate 300 and the flip cover 400. The two output members 530 move synchronously to drive the guide plate 300 and the flip cover 400 to open or close synchronously. The length direction is the left-right direction.

[0056] The arrangement of the side smoke inlet 130 allows the gas at one side of the housing 100 in the length direction to enter the smoke collecting cavity 110 through the side smoke inlet 130, so as to enter the volute at the rear air inlet 240 of the fan 200. In this process, the gas passes through the motor 210 of the fan 200 and carries away the heat of the motor 210, thereby dissipating the heat of the motor 210 and ensuring the efficiency of the fan 200.

[0057] Even if an electric pressure cooker or other cooker is used at the left side or the right side of the oil fume extractor on the cooking bench, the oil fume or steam can be sucked through the side smoke inlet 130, so as to ensure the suction effect and cool the motor 210, thereby ensuring the efficiency of the fan 200.

[0058] The driving mechanism 500 simultaneously drives the flip cover 400 and the guide plate 300, thereby saving cost. When the flip cover 400 and the guide plate 300 are opened at the same time, the smoke inlet area is large, so as to complete the suction of more oil fume and dissipate the heat of the motor 210, thereby adapting to more application scenarios.

[0059] In some embodiments, the front air inlet 230 and the front smoke inlet 120 are opposite to each other. The smoke outlet 140 is arranged at the top of the housing 100.

[0060] In some embodiments, the cover 400 is in an inclined state when opened, and is inclined backward from the direction of the smoke collecting cavity 110 to guide the smoke entering from the side smoke inlet 130 to flow to the back side of the smoke collecting cavity 110 to enter the volute of the fan 200 from the back air inlet 240 of the fan 200, so that the gas enters the inside of the volute after passing through the motor 210, and then flows out of the air outlet under the action of the impeller 220, and the heat of the motor 210 is taken away in the process of the gas passing through the motor 210, so that the temperature of the motor 210 is reduced, which helps to ensure the performance and working efficiency of the motor 210.

[0061] In order to improve the suction effect of oil fume, in some embodiments, the guide plate 300 is in an inclined state when opened, and is inclined forward from top to bottom, so as to intercept the oil fume escaping upward. The above arrangement makes the oil fume generated in the cookware on the cooking appliance be intercepted and guided by the guide plate 300 during upward flow, and smoothly enters the smoke collecting cavity 110, reducing the possibility of escape.

[0062] In some embodiments, the cover 400 includes a cover body 410 and a rotating part 420 provided on the cover body 410 and matched with the shell 100, and the axis of the rotating part 420 extends along the height direction of the shell 100; when the cover 400 is in the second closed position, the rotating part 420 is located at the back side of the cover body 410, the cover 400 is rotated outward to open the side smoke inlet 130, and the included angle between the cover 400 in the second open position and the vertical plane of the side smoke inlet 130 is less than 90°. In other words, when the left side of the shell 100 is provided with the side smoke inlet 130, the included angle between the cover 400 and the left side wall of the shell 100 is less than 90°. The above arrangement makes the cover 400 in the second open position guide the gas outside to flow into the smoke collecting cavity 110, and be inclined backward to enter the volute from the back air inlet 240 of the fan 200. The height direction is the up-down direction.

[0063] In some embodiments, along the height direction of the shell 100, the cover body 410 is provided with a rotating shaft at each of the upper and lower ends to form the rotating part 420, and the shell 100 is provided with two open rotating grooves, and each rotating shaft is rotatably arranged in the corresponding rotating groove to ensure the stability of the rotating process of the cover 400.

[0064] Regarding the specific structure of the driving mechanism 500, in some embodiments, the driving mechanism 500 further comprises a driving member 510 and a moving member 520, the driving member 510 is arranged in the shell 100, the moving member 520 is movably arranged in the shell 100 along the thickness direction of the shell 100 and is in transmission connection with the output end of the driving member 510, and the output member 530 connected with the flip cover 400 is movably arranged in the shell 100 along the length direction of the shell 100, each output member 530 has a matching part, the moving member 520 is provided with a guide part, and the guide part is in sliding fit with the matching part. The above arrangement makes the output end of the driving member 510 move along the thickness direction of the shell 100 to drive the moving member 520 to move along the thickness direction of the shell 100, so as to be in sliding fit with the matching part, drive the output member 530 to move along the length direction of the shell 100, and drive the flip cover 400 to move. The thickness direction is the front-rear direction.

[0065] Specifically, the moving member 520 is provided with a first sliding groove 5211 extending outwardly from back to front to form a guide part, one end of the output member 530 is provided with a sliding block 531 to form a matching part, and the sliding block 531 is slidably arranged in the first sliding groove 5211, and the moving member 520 moves forward to drive the sliding block 531 to move to drive the flip cover 400 to move to the second opening position. The above arrangement makes the moving member 520 move forward to drive the sliding block 531 to act through the cooperation of the first sliding groove 5211 and the sliding block 531, so as to drive the flip cover 400 to open.

[0066] Further, the first sliding groove 5211 is a T-shaped groove with an opening facing the output member 530, the sliding block 531 is spherical, and the moving member 520 moves backward to drive the sliding block 531 to move to drive the flip cover 400 to move to the second closed position. The above arrangement realizes the bidirectional cooperation of the first sliding groove 5211 and the sliding block 531, that is, when the moving member 520 moves forward, the bottom wall of the first sliding groove 5211 pushes the sliding block 531 away from one end of the flip cover 400 to make the sliding block 531 away from the smoke collecting cavity 110, and the flip cover 400 opens, when the moving member 520 moves backward, the groove wall at the opening of the first sliding groove 5211 pushes the sliding block 531 close to one end of the flip cover 400 to make the sliding block 531 close to the smoke collecting cavity 110, and the flip cover 400 closes, the structure is simple, and as few parts as possible are used to complete the opening and closing actions of the flip cover 400; wherein the spherical sliding block 531 can adapt to the shape of the first sliding groove 5211 and help to ensure the smoothness of sliding. Specifically, the cross-sectional profile of the first sliding groove 5211 is circular and matches the shape of the sliding block 531.

[0067] The driving mechanism 500 comprises a sliding base 540 arranged on the shell 100, the moving member 520 is slidingly arranged on the sliding base 540, the sliding base 540 is provided with a first sliding groove 5211 and a sliding channel, the output member 530 comprises a sliding rod 532 and a hinged rod 533, the sliding rod 532 is slidingly arranged in the sliding channel, the sliding block 531 is arranged on one end of the sliding rod 532, the hinged rod 533 passes through the avoiding channel of the shell 100, and one end of the hinged rod 533 is hinged to the other end of the sliding rod 532, and the other end of the hinged rod 533 is hinged to the flip cover 400. The above arrangement makes the sliding base 540 serve two purposes, saves the number of parts, and improves the installation efficiency. The sliding base 540 is provided with a sliding rail 541, and the moving member 520 is provided with a second sliding groove in sliding cooperation with the sliding rail 541.

[0068] In some embodiments, the length direction of the shell 100 is provided with one side smoke inlet 130 communicating with the smoke collecting cavity 110 on each side; each side smoke inlet 130 is provided with one flip cover 400, and the two side smoke inlets 130 and the front smoke inlet 120 are simultaneously opened and closed. The above arrangement further increases the smoke inlet area and improves the oil fume suction effect; in addition, the heat dissipation effect of the motor 210 is better in the two side air inlet states.

[0069] Specifically, the upper end of the guide plate 300 is hinged to the shell 100, the guide plate 300 is provided with a hinge part, the driving mechanism 500 comprises a transfer member 550, two moving members 520 and three output members 530, the two moving members 520 and the two output members 530 correspond to the two flip covers 400 respectively, the two moving members 520 are arranged at intervals along the length direction of the shell 100, the transfer member 550 is connected between the two moving members 520 to make the two moving members 520 move synchronously, the other output member 530 passes through the avoiding hole of the shell 100, and one end of the output member 530 is hinged to the transfer member 550, and the other end of the output member 530 is hinged to the hinge part. The above arrangement can realize synchronous transmission of the two flip covers 400 and the guide plate 300. The output end of the driving member 510 is connected with the transfer member 550, in the process of driving the transfer member 550 to move, the two moving members 520 are driven to move synchronously, and the output member 530 connected with the transfer member 550 is driven to move, the synchronous movement of the two moving members 520 realizes synchronous opening or closing of the two flip covers 400, and the output member 530 connected with the hinge part drives the guide plate 300 to open and close synchronously with the two flip covers 400.

[0070] To adapt to the internal structure of the smoke collecting cavity 110, the moving member 520 comprises a moving body 521 and an extension rod 522, a first sliding groove 5211 is arranged on the moving body 521, the extension rod 522 is arranged on the moving body 521 and extends along the thickness direction of the shell 100, the two ends of the transfer member 550 are respectively connected with the ends of the two extension rods 522 away from the moving body 521, and the output end of the driving member 510 is connected with the transfer member 550. The driving member 510 can be a push rod motor. The above arrangement makes the driving member 510 be arranged at the rear of the smoke collecting cavity 110, and the front of the driving member 510 has a certain expansion space. At the same time, the cooperation of the transfer member 550 and the extension rod 522 makes the two moving bodies 521 move synchronously, and the transfer member 550 can be located in front of the fan 200 to bypass the fan 200 at the intermediate position and connect the two moving members 520.

[0071] The moving body 521 is located in the smoke collecting cavity 110, and in the thickness direction of the shell 100, the moving body 521 is located on the rear side of the center line of the side smoke inlet 130; the end of the extension rod 522 away from the moving body 521 is located in front of the fan 200, and the transfer member 550 is located in front of the fan 200. By means of the arrangement of the extension rod 522, the moving body 521 can be located on the rear side of the smoke collecting cavity 110, so that the position of the driving cover 400 is located on the rear side of the cover 400. Since the rotating shaft of the cover 400 is located on the rear side, the cover 400 minimizes the moving distance of the corresponding output member 530 in the opening and closing process.

[0072] In the embodiment, the driving member 510 is located in the smoke collecting cavity 110 and on the right side or the left side of the fan 200.

[0073] In other embodiments, one side smoke inlet 130 communicating with the smoke collecting cavity 110 is arranged on each side of the length direction of the shell 100; one cover 400 is arranged corresponding to each side smoke inlet 130, and the two side smoke inlets 130 are synchronously opened or individually opened. In the embodiment, when the two side smoke inlets 130 are individually opened, one side smoke inlet 130 is synchronously opened and closed with the front smoke inlet 120, and the other side smoke inlet 130 is opened and closed by a separately arranged push rod motor. In the embodiment, the driving mechanism 500 only needs to reduce one output member 530. Among them, the left side smoke inlet 130 can be independently opened or the right side smoke inlet 130 can be independently opened, so as to adapt to different use environments. For example, when the left side space of the range hood is an operation table, in order to ensure that the largest possible space is not occupied by the cover 400, the left side smoke inlet 130 can be selected to be independently opened, and the left side cover 400 is kept closed during the use of the operation table to facilitate the operation table to have a larger use area.

[0074] In some embodiments, the driving mechanism 500 is arranged in the housing 100 and located at the top of the smoke collecting cavity 110, so as to reduce the erosion of oil stains on the driving mechanism 500, ensure the use effect, improve the user experience, and prolong the service life.

[0075] In order to filter the oil stains, in some embodiments, the range hood further comprises a first filter screen 610 arranged in the front smoke inlet 120. The range hood further comprises a second filter screen 620 arranged in the side smoke inlet 130.

[0076] Further, in order to reduce the pollution of oil stains on the motor 210, a third filter screen is arranged at the rear side of the fan 200 to filter the oil fume. The mounting frame is connected with the housing 100, the fan 200 is fixed on the mounting frame, and the oil fume can enter the rear air inlet 240 through the gap between the fan 200 and the housing 100.

[0077] Obviously, the above embodiments of the present application are merely examples for clear illustration of the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A range hood, characterized in that, include: The outer casing (100) has a smoke collection chamber (110) and a front smoke inlet (120), a side smoke inlet (130) and a smoke outlet (140) communicating with the smoke collection chamber (110). The front smoke inlet (120) is located on the front side of the outer casing (100), and the side smoke inlet (130) is located on at least one side of the outer casing (100) in the length direction. A fan (200) is disposed in the smoke collection chamber (110) and located behind the front smoke inlet (120). Gas entering the volute of the fan (200) from the front air inlet (230) or the rear air inlet (240) of the fan (200) flows to the smoke outlet (140) through the air outlet of the fan (200). The motor (210) of the fan (200) is at least partially located behind the impeller (220). A guide plate (300) is disposed on the outer shell (100) and moves between a first open position and a first closed position to open or close the forward smoke inlet (120); when the guide plate (300) is in the first open position, the forward smoke inlet (120), the smoke collection chamber (110) and the front air inlet (230) are connected. A flip cover (400) is disposed on the outer shell (100) and moves between a second open position and a second closed position to open or close the side smoke inlet (130); when the flip cover (400) is in the second open position, the side smoke inlet (130), the smoke collection chamber (110) and the rear air inlet (240) are connected. A drive mechanism (500) having at least two output members (530), the at least two output members (530) being hinged to the guide plate (300) and the flip cover (400) respectively, the two output members (530) moving synchronously to drive the guide plate (300) and the flip cover (400) to open or close synchronously.

2. The range hood according to claim 1, characterized in that, When the flip cover (400) is opened, it is tilted and tilted backward from the outside towards the smoke collection chamber (110) to guide the smoke entering from the side smoke inlet (130) to flow backward towards the rear of the smoke collection chamber (110) so as to enter the volute of the fan (200) from the rear air inlet (240); and / or, When the guide plate (300) is opened, it is tilted and tilts from top to bottom and forward to intercept the oil fumes escaping upward.

3. The range hood according to claim 2, characterized in that, The flip cover (400) includes a cover body (410) and a rotating part (420) disposed on the cover body (410) and cooperating with the outer shell (100). The axis of the rotating part (420) extends along the height direction of the outer shell (100). When the flip cover (400) is in the second closed position, the rotating part (420) is located on the rear side of the cover body (410), and the flip cover (400) rotates outward to open the side smoke inlet (130). The angle between the vertical plane of the flip cover (400) and the side smoke inlet (130) in the second open position is less than 90°.

4. The range hood according to claim 3, characterized in that, Along the height direction of the outer shell (100), each of the upper and lower ends of the cover body (410) is provided with a rotating shaft to form the rotating part (420). The outer shell (100) is provided with two rotating grooves with opposite openings, and each rotating shaft is rotatably disposed in the corresponding rotating groove.

5. The range hood according to claim 1, characterized in that, The drive mechanism (500) further includes a drive member (510) and a moving member (520). The drive member (510) is disposed on the housing (100). The moving member (520) is movably disposed on the housing (100) along the thickness direction of the housing (100) and is connected to the output end of the drive member (510). The output member (530) connected to the flip cover (400) is movably arranged on the housing (100) along the length direction of the housing (100). Each output member (530) has a mating part. The moving member (520) is provided with a guide part, and the guide part is slidably engaged with the mating part.

6. The range hood according to claim 5, characterized in that, The movable member (520) is provided with a first groove (5211) extending from back to front and outward to form a guide portion. One end of the output member (530) is provided with a slider (531) to form the mating portion. The slider (531) is slidably disposed in the first groove (5211). When the movable member (520) moves forward, it can drive the slider (531) to move so as to move the flip cover (400) to the second open position.

7. The range hood according to claim 6, characterized in that, The first slide (5211) is a T-shaped groove with its opening facing the output component (530). The slider (531) is spherical. The movement of the moving component (520) can drive the slider (531) to move so as to move the flip cover (400) to the second closed position.

8. The range hood according to claim 6, characterized in that, The drive mechanism (500) includes a sliding base (540) disposed on the outer shell (100), the moving part (520) is slidably disposed on the sliding base (540), the sliding base (540) is provided with a sliding channel, the output part (530) includes a sliding rod (532) and a hinge rod (533), the sliding rod (532) is slidably disposed in the sliding channel, the slider (531) is disposed at one end of the sliding rod (532), one end of the hinge rod (533) is hinged to the other end of the sliding rod (532), and the other end of the hinge rod (533) is hinged to the flip cover (400).

9. The range hood according to claim 5, characterized in that, Each side of the outer shell (100) along its length is provided with a side smoke inlet (130) that communicates with the smoke collection chamber (110); each side smoke inlet (130) is provided with a corresponding flip cover (400), and the two side smoke inlets (130) and the forward smoke inlet (120) open and close simultaneously. The upper end of the guide plate (300) is hinged to the outer shell (100). The guide plate (300) is provided with a hinge part. The drive mechanism (500) includes a transfer member (550), two moving members (520) and three output members (530). The two moving members (520) and the two output members (530) correspond to the two flip covers (400) respectively. The two moving members (520) are arranged at intervals along the length direction of the outer shell (100). The transfer member (550) is connected between the two moving members (520) so that the two moving members (520) move synchronously. The other output member (530) passes through the clearance hole of the outer shell (100) and is hinged at one end to the transfer member (550) and at the other end to the hinge part.

10. The range hood according to claim 9, characterized in that, The moving part (520) includes a moving body (521) and an extension rod (522). The guide part is provided on the moving body (521), and the extension rod (522) is provided on the moving body (521) and extends along the thickness direction of the outer shell (100). The two ends of the transfer part (550) are respectively connected to the ends of the two extension rods (522) away from the moving body (521). The output end of the driving part (510) is connected to the transfer part (550).

11. The range hood according to claim 10, characterized in that, The movable body (521) is located inside the smoke collection chamber (110). In the thickness direction of the outer shell (100), the movable body (521) is located behind the centerline of the side smoke inlet (130); the end of the extension rod (522) away from the movable body (521) is located in front of the fan (200), and the transfer component (550) is located in front of the fan (200); And / or, The drive unit (510) is located inside the smoke collection chamber (110) and on the right or left side of the fan (200).

12. The range hood according to claim 1, characterized in that, Each side of the outer shell (100) along its length is provided with a side smoke inlet (130) that connects to the smoke collection chamber (110); each side smoke inlet (130) is provided with a corresponding flip cover (400), and the two side smoke inlets (130) can be opened simultaneously or individually.

13. The range hood according to any one of claims 1-12, characterized in that, The drive mechanism (500) is located inside the housing (100) and at the top of the smoke collection chamber (110).

14. The range hood according to any one of claims 1-12, characterized in that, The range hood further includes a first filter (610), which is disposed at the inlet (120); and / or, The range hood also includes a second filter (620), which is disposed at the side smoke inlet (130).

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