Range hood and method for using a range hood

Abstract

The application relates to the technical field of kitchen appliances, and particularly discloses an oil fume extractor and a use method of the oil fume extractor. In the oil fume extractor, a shell has a smoke collecting cavity, a front smoke inlet, a side smoke inlet and a smoke outlet which are 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; a fan is arranged in the smoke collecting cavity; a translation piece is movably arranged in the shell along the thickness direction of the shell; a rotating shaft is arranged between the translation piece and a flow guide plate, the other is provided with a rotating groove, the rotating shaft extends along the height direction of the shell, the rotating shaft is rotatably arranged in the rotating groove, the flow guide plate is arranged in the smoke collecting cavity and at least partially extends into the side smoke inlet, and the flow guide plate can synchronously move with the translation piece and rotate relative to the translation piece around the axis of the rotating shaft to adjust the flow rate of the fluid entering the volute from the rear smoke inlet and entering the smoke collecting cavity from the side smoke inlet. The above arrangement improves the oil fume suction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to an oil fume exhaust hood and a use method thereof. BACKGROUND

[0002] The ultra-thin oil fume exhaust hood (the thickness of the machine body is usually less than or equal to 250 mm) is installed at the rear of the cooking appliance. Its core advantage lies in saving space and improving aesthetics. However, in order to improve the smoke suction efficiency, the fan speed is usually increased. The fan generally includes a motor and an impeller connected to the output end of the motor. The high-speed fan requires the motor to maintain a high speed, which results in a high temperature of the motor, thereby affecting the performance of the motor and reducing the working efficiency of the fan. In addition, long-term cooking also causes the temperature of the motor to be high, which affects its performance. Furthermore, when using electric pressure cookers and other cooking utensils on the left and right sides of the ultra-thin oil fume exhaust hood, the front-side smoke inlet has poor suction effect on oil fumes, which affects the user's experience.

[0003] Therefore, it is urgent to study an oil fume exhaust hood and a use method thereof to solve the above problems. SUMMARY

[0004] The present application aims to provide an oil fume exhaust hood and a use method thereof to solve the problem that the high temperature of the motor in the prior art affects the efficiency of the fan, and the suction effect of oil fumes is poor when cooking utensils are used on the left and right sides of the oil fume exhaust hood.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] An oil fume exhaust hood, comprising:

[0007] A housing having a smoke collecting cavity, a front smoke inlet, a side smoke inlet and a smoke outlet communicating with the smoke collecting cavity, the front smoke inlet being arranged on the front side of the housing, and the side smoke inlet being arranged on at least one side of the length direction of the housing;

[0008] A fan 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, wherein the motor of the fan is at least partially located behind the impeller;

[0009] A translation member movably arranged in the housing along the thickness direction of the housing;

[0010] A rotating shaft is arranged along the height direction of the shell, and a rotating groove is arranged on the other one, the rotating shaft is arranged in the rotating groove, the baffle is arranged in the smoke collecting cavity and extends into the side smoke inlet at least partially, and the baffle can move synchronously with the translation member and rotate relative to the translation member around the axis of the rotating shaft to adjust the flow rate of the fluid entering the volute from the rear air inlet.

[0011] As an optional technical solution of the range hood, the range hood further comprises a first driving member, the first driving member is arranged in the shell, an output end of the first driving member is connected with the translation member to drive the translation member to reciprocate along the thickness direction of the shell, or an output end of the first driving member is connected with the baffle to drive the baffle to move and drive the translation member to reciprocate along the thickness direction of the shell, and / or,

[0012] The baffle rotates between the first open state and the first closed state to open or close the side smoke inlet.

[0013] As an optional technical solution of the range hood, the rotating groove is arranged on the translation member, the rotating shaft is arranged on the baffle, and the first driving member comprises a telescopic driving member, the telescopic driving member is hinged to the shell, and an output end of the telescopic driving member is hinged to the rotating shaft.

[0014] As an optional technical solution of the range hood, the baffle is provided with one rotating shaft at each end along the height direction, the range hood comprises at least two translation members, the two translation members correspond to one baffle and are arranged at intervals along the height direction of the shell, and the two rotating shafts are connected with the two translation members one by one.

[0015] As an optional technical solution of the range hood, the baffle is further provided with an auxiliary shaft, the auxiliary shaft and the rotating shaft are arranged at intervals along the length direction of the baffle, the range hood further comprises a second driving member, the second driving member is connected to the shell, an output end of the second driving member is connected with the auxiliary shaft, and the second driving member drives the auxiliary shaft to drive the baffle to rotate around the rotating shaft.

[0016] As an optional technical solution of the range hood, the first driving member is located in the smoke collecting cavity, and / or,

[0017] The first driving member is located at the top of the shell.

[0018] As an optional technical solution of the range hood, the translation member is a sliding block, the shell is provided with a sliding rail extending along the thickness direction, and the sliding block is slidingly arranged in the sliding rail, and / or,

[0019] The rotating groove is arranged on the guide plate, and the rotating shaft is arranged on the translation member.

[0020] As an optional technical solution of the range hood, the shell has two side smoke inlets, which are respectively located on the two sides of the length direction of the shell and are respectively arranged on the two sides of the fan; the range hood comprises two guide plates, the two guide plates and the two side smoke inlets are one-to-one corresponding, and are respectively arranged on the two sides of the fan along the length direction of the shell; the translation member is at least provided with two, and each guide plate corresponds to at least one translation member.

[0021] As an optional technical solution of the range hood, the range hood further comprises a smoke guide plate, the smoke guide plate is arranged on the shell and can be switched between a second open state and a second closed state to open or close the front smoke inlet; and / or,

[0022] The shell comprises a main body part and a rear convex part, the length of the rear convex part is less than the length of the main body part, and the side smoke inlet is arranged on the main body part.

[0023] The use method of the range hood is applied to the range hood of any one of the above technical solutions, and comprises the following steps:

[0024] When a cooking utensil is used on the range in front of the range hood, it is judged whether the oil fume on one side of the range hood along the length direction exceeds a first preset concentration, if yes, the guide plate on the corresponding side is opened, part of the oil fume enters the smoke collecting chamber from the front smoke inlet and enters the volute from the front air inlet, and / or part of the oil fume enters the smoke collecting chamber from the side smoke inlet and enters the volute from the rear air inlet; otherwise, the guide plate remains in the first closed state, the oil fume enters the smoke collecting chamber from the front smoke inlet, and enters the volute from the front air inlet;

[0025] When a cooking utensil is used on one side of the range hood along the length direction, the guide plate is opened, and the oil fume can enter the smoke collecting chamber from the side smoke inlet.

[0026] The present application has at least the following beneficial effects:

[0027] The oil fume extractor comprises a housing, a fan, a translation member and a flow guide plate.

[0028] The arrangement of the front smoke inlet and the side smoke inlet increases the smoke inlet area, thereby improving the oil fume suction efficiency. In addition, the side smoke inlet is arranged to enable the gas to enter the smoke collection cavity from the side smoke inlet and enter the volute from the rear air inlet. In this process, the gas passes through the motor of the fan, thereby removing the heat generated by the motor and cooling the motor, so that the temperature of the motor is maintained within a preset range, thereby facilitating the guarantee of the efficiency of the fan. Finally, the angle and position of the flow guide plate are adjustable, which can increase or decrease the air volume entering the volute through the rear air inlet, adjust the cooling effect on the motor and help to adapt to different application scenarios.

[0029] Even if an electric pressure cooker or other cooking utensil is used beside the oil fume extractor on the cooking table, the oil fume or steam can be sucked through the side smoke inlet, thereby ensuring the suction effect and cooling the motor to guarantee the efficiency of the fan. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed 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 creative labor.

[0031] Figure 1 FIG. 1 is a structural schematic view of the oil fume extractor in the first perspective view according to an embodiment of the present application;

[0032] Figure 2 FIG. 2 is a structural schematic view of the oil fume extractor in the second perspective view according to an embodiment of the present application;

[0033] Figure 3 FIG. 3 is a structural schematic view of the oil fume extractor in the third perspective view according to an embodiment of the present application; Figure 2A cross-sectional view along the direction of A-A;

[0034] Figure 4 Fig. 1 is a schematic view of an internal structure of an extractor hood according to an embodiment of the present application, a first perspective view; Figure 3 Fig. 2 is an enlarged view of part J in Fig. 1;

[0035] Figure 5 Fig. 3 is a schematic view of an internal structure of an extractor hood according to an embodiment of the present application, a second perspective view;

[0036] Figure 6 Fig. 4 is a schematic view of an internal structure of an extractor hood according to an embodiment of the present application, a third perspective view;

[0037] Figure 7 Fig. 5 is an enlarged view of part K in Fig. 4. Figure 6 Fig. 6 is a schematic view of an internal structure of an extractor hood according to an embodiment of the present application, a fourth perspective view;

[0038]

[0039] 100, housing; 110, smoke collecting cavity; 120, front smoke inlet; 130, side smoke inlet; 140, smoke outlet; 101, main body; 102, rear protruding part; 103, baffle plate;

[0040] 200, fan; 210, volute; 211, front air inlet; 212, rear air inlet; 220, motor; 230, impeller; 240, mounting bracket;

[0041] 300, translation member; 310, slide rail;

[0042] 400, guide plate; 410, rotation shaft; 420, auxiliary shaft;

[0043] 510, first driving member; 520, second driving member;

[0044] 600, smoke guide plate; 610, second filter screen. DETAILED DESCRIPTION

[0045] Before any embodiments of the present 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.

[0046] In this application, the terms "comprise", "comprising", "having", "including", "contain", "containing", "include" or any other similar phrase are intended to encompass non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list 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 further limitation, an element defined by the phrase "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0047] ​In the present application, the term "and / or", is a description of an associated relationship with associated objects, which means that there can be three kinds of relationships. For example, A and / or B, can represent: the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in the present application generally indicates that the front and rear associated objects are in a "and / or" relationship.

[0048] In the present application, the terms "connected", "combined", "coupled", "mounted" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, while 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.

[0049] In the present application, those of ordinary skill in the art will understand that the relative terms used in connection with quantities or conditions (for example, "about", "approximately", "substantially" and the like) include the values indicated by the context and have the meaning indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative term can refer to a certain percentage (e.g. 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain number of degrees (e.g. 1 degree, 5 degrees, 10 degrees or more) added or subtracted from the indicated angle.

[0050] In the present application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0051] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as a limitation on the embodiments of the present application. In addition, it is also understood in the context that when referring to an element connected to another element "on" or "under", it can be directly connected to another element "on" or "under", or indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, left below, right below, front below and back below, etc.

[0052] As shown in Figures 1 to 7 The present embodiment provides an extractor hood, which comprises a housing 100, a fan 200, a translation member 300 and a guide plate 400; wherein the housing 100 has a smoke collecting cavity 110, a front smoke inlet 120, a side smoke inlet 130 and a smoke outlet 140 which are in communication with the smoke collecting cavity 110, the front smoke inlet 120 is arranged on the front side of the housing 100, and the side smoke inlet 130 is arranged on at least one side of the length direction of the housing 100; the fan 200 is arranged in the smoke collecting cavity 110 and located behind the front smoke inlet 120, the gas entering the volute 210 of the fan 200 from the front air inlet 211 of the fan 200 or the rear air inlet 212 of the fan 200 flows to the smoke outlet 140 through the air outlet of the fan 200, wherein the fan 200 comprises a motor 220 and an impeller 230, at least part of the motor 220 is located behind the impeller 230; the translation member 300 is movably arranged in the housing 100 along the thickness direction of the housing 100; the guide plate 400 and the translation member 300 are arranged in a manner that one of them is provided with a rotating shaft 410 and the other is provided with a rotating groove, the rotating shaft 410 extends along the height direction of the housing 100, the rotating shaft 410 is rotatably arranged in the rotating groove, the guide plate 400 is arranged in the smoke collecting cavity 110 and extends at least partially into the side smoke inlet 130, and can move synchronously with the translation member 300 and rotate relative to the translation member 300 around the axis of the rotating shaft 410 to adjust the flow rate of the fluid entering the volute 210 from the rear air inlet 212.

[0053] Wherein, the length direction is the left-right direction, the thickness direction is the front-back direction, and the height direction is the up-down direction.

[0054] The arrangement of the front smoke inlet 120 and the side smoke inlet 130 increases the smoke inlet area, thereby improving the smoke suction efficiency. In addition, by opening the side smoke inlet 130, gas can enter the smoke collection cavity 110 from the side smoke inlet 130 and enter the volute 210 from the rear air inlet 212. In this process, the gas passes through the motor 220 of the fan 200, carries away the heat generated by the motor 220, and cools the motor 220, so that the temperature of the motor 220 is maintained within a predetermined range, thereby helping to ensure the efficiency of the fan 200. Finally, the angle and position of the flow guide plate 400 are adjustable, which can increase or decrease the amount of air entering the volute 210 through the rear air inlet 212, adjust the cooling effect on the motor 220, and help to adapt to different application scenarios.

[0055] Even if an electric pressure cooker or other cooking utensil is used beside the range hood on the cooking table, the side smoke inlet 130 can still suck oil fumes or steam, thereby ensuring the suction effect and cooling the motor 220 to ensure the efficiency of the fan 200.

[0056] In some embodiments, the range hood further comprises a first driving member 510, which is arranged in the housing 100. The output end of the first driving member 510 is connected to the translation member 300 to drive the translation member 300 to reciprocate along the thickness direction of the housing 100. Alternatively, the output end of the first driving member 510 is connected to the flow guide plate 400 to drive the flow guide plate 400 to move and drive the translation member 300 to reciprocate along the thickness direction of the housing 100. The above arrangement, on the one hand, realizes the automatic control of the translation member 300, avoids manual operation, ensures the hand cleaning of the user during use, and improves the user experience. On the other hand, the arrangement of the first driving member 510 can adjust the relative position of the flow guide plate 400 in the side smoke inlet 130, thereby adjusting the proportion of the front side space and the rear side space of the side smoke inlet 130 relative to the flow guide plate 400, and further adjusting the proportion of the smoke entering the smoke collection cavity 110 from the front side space and the rear side space of the side smoke inlet 130. On this basis, in combination with the rotation of the flow guide plate 400 relative to the translation member 300, the proportion of the smoke entering the volute 210 from the front air inlet 211 or the rear air inlet 212 can be adjusted. It should be noted that the flow guide plate 400 divides the side smoke inlet 130 into two parts, i.e., the front side space and the rear side space. The oil fumes entering the smoke collection cavity 110 from the front side space are more likely to enter the volute 210 from the front air inlet 211, and the oil fumes entering the smoke collection cavity 110 from the rear side space are more likely to enter the volute 210 from the rear air inlet 212, thereby realizing the cooling of the fan 200.

[0057] In use, the baffle plate 400 has the following states. In the first mode of the embodiment, the baffle plate 400 is in the first state, the translation member 300 is located at the front end of the side smoke inlet 130, the front side space disappears, and all the oil fume enters the smoke collection cavity 110 from the rear side space. The baffle plate 400 is rotated to form an inclined state, and is inclined backward from the outside to the direction of the smoke collection cavity 110, so as to guide all the oil fume to the rear air inlet 212. This mode is suitable for the case that the oil fume is present at one end of the length direction of the range hood, and the motor 220 needs to be cooled.

[0058] In the second mode of the embodiment, the baffle plate 400 is in the second state, the translation member 300 is located at the rear end of the side smoke inlet 130, the rear side space disappears, and all the oil fume enters the smoke collection cavity 110 from the front side space. The baffle plate 400 is rotated to form an inclined state, and is inclined forward from the outside to the direction of the smoke collection cavity 110, so as to guide all the oil fume to the front air inlet 211. This mode is suitable for the case that the oil fume is present at one end of the length direction of the range hood, but the motor 220 does not need to be cooled.

[0059] In the third mode of the embodiment, the baffle plate 400 is in the third state, the translation member 300 is located at the middle position of the side smoke inlet 130, the front side space and the rear side space are the same, part of the oil fume enters the smoke collection cavity 110 from the front side space, and the other part enters the smoke collection cavity 110 from the rear side space. This mode is suitable for the case that the oil fume is present at one end of the length direction of the range hood, and the motor 220 needs to be cooled.

[0060] In some embodiments, the baffle plate 400 is rotated between the first open state and the first closed state to open or close the side smoke inlet 130. The above arrangement enables the baffle plate 400 to close the side smoke inlet 130, so that the appearance is more neat. In the first open state, the baffle plate 400 opens the side smoke inlet 130, and is arranged to extend along the left-right direction, the end of the baffle plate 400 away from the fan 200 is moved forward, and the end of the baffle plate 400 close to the fan 200 is rotated to the rear side of the side smoke inlet 130 to form the first closed state; or, the end of the baffle plate 400 away from the fan 200 is moved backward, and the end of the baffle plate 400 close to the fan 200 is rotated to the front side of the side smoke inlet 130 to form the first closed state.

[0061] In some embodiments, the rotation groove is arranged on the translation member 300, the rotation shaft 410 is arranged on the baffle plate 400, and the first driving member 510 includes a telescopic driving member, which is hinged to the housing 100, and the output end of the telescopic driving member is hinged to the rotation shaft 410. The telescopic driving member is a push rod motor 220. The above arrangement helps to reduce the thickness of the baffle plate 400, save costs, and improve the appearance.

[0062] The output shaft of the first driving member 510 is a bent structure to adapt to the internal structure of the smoke collecting cavity 110 and the relative position relationship between the first driving member 510 and the rotating shaft 410. In other embodiments, the first driving member 510 can also be a servo motor 220, the output end of the servo motor 220 is connected through a driving wheel, a driven wheel rotates and is arranged outside the shell 100, a belt is arranged outside the periphery of the driving wheel and the driven wheel, and a straight line portion extending in the front-rear direction in the belt is connected with the translation member 300.

[0063] To improve the smoothness of the movement of the translation member 300, in some embodiments, the translation member 300 is a sliding block, the shell 100 is provided with a sliding rail 310 extending in the thickness direction, and the sliding block is slidingly arranged in the sliding rail 310. The sliding block and the sliding rail 310 are matched through dovetail groove structure. The translation member 300 further includes a connecting block arranged beside the sliding block, the connecting block is provided with a first mounting hole, the rotating shaft 410 passes through the first mounting hole and is partially located above the first mounting hole, and the end of the rotating shaft 410 located above the first mounting hole is provided with a first clamping groove, and a first clamping ring is clamped in the first clamping groove. The outer diameter of the first clamping ring is greater than the diameter of the first mounting hole.

[0064] In other embodiments, the rotating groove is arranged on the drainage plate 400, and the rotating shaft 410 is arranged on the sliding block. The rotating shaft 410 is arranged on the end of the sliding block away from the sliding rail 310. In this embodiment, the drainage plate 400 includes a plate body and a support arm arranged on the inner side of the plate surface of the plate body. When the plate body closes the side smoke inlet 130, the plate body is located on the outer side of the sliding block to block the sliding block. The rotating groove is arranged on the end of the support arm away from the plate body, and the extension direction of the support arm is perpendicular to the height direction. In the projection on the horizontal plane, the maximum distance between the front end of the sliding block and the rotating shaft 410 is L1, and the length of the support arm is L2, L2 is greater than L1. The above arrangement makes the plate body not interfere with the sliding block during rotation around the rotating shaft 410, and blocks the sliding block when closing the side smoke inlet 130, thereby improving the aesthetics.

[0065] It should be noted that when the plate body closes the side smoke inlet 130, it is perpendicular to the left-right direction. At this time, the support arm extends along the left-right direction. It can be understood that when the plate body closes the side smoke inlet 130, it is generally perpendicular to the left-right direction.

[0066] To improve the smoothness of the movement of the translation member 300, in some embodiments, the translation member 300 is a sliding block, the shell 100 is provided with a sliding rail 310 extending in the thickness direction, and the sliding block is slidingly arranged in the sliding rail 310. The sliding block and the sliding rail 310 are matched through dovetail groove structure. The translation member 300 further includes a connecting block arranged beside the sliding block, the connecting block is provided with a first mounting hole, the rotating shaft 410 passes through the first mounting hole and is partially located above the first mounting hole, and the end of the rotating shaft 410 located above the first mounting hole is provided with a first clamping groove, and a first clamping ring is clamped in the first clamping groove. The outer diameter of the first clamping ring is greater than the diameter of the first mounting hole.

[0067] To enable the diversion plate 400 to rotate around the rotation shaft 410, in some embodiments, the diversion plate 400 is further provided with an auxiliary shaft 420. The auxiliary shaft 420 and the rotation shaft 410 are arranged at intervals along the length of the diversion plate 400. The range hood also includes a second driving member 520, which is connected to the housing 100 and has its output end connected to the auxiliary shaft 420, driving the auxiliary shaft 420 to rotate the diversion plate 400 around the rotation shaft 410. This configuration allows the second driving member 520 to be a push rod motor 220, thereby simplifying the assembly process. Since the auxiliary shaft 420 is far from the rotation shaft 410, its lever arm is large, and the power of the second driving member 520 is small, saving costs.

[0068] For example, the diversion plate 400 is provided with an auxiliary shaft 420 and two rotating shafts 410. The auxiliary shaft 420 and the rotating shafts 410 are located at the left and right ends of the diversion plate 400, respectively. The two rotating shafts 410 are located at the upper and lower ends of the diversion plate 400, respectively. The auxiliary shaft 420 is located at the upper or lower end of the diversion plate 400. The above orientation refers to the relative position of the diversion plate 400 in the first open state. When the auxiliary shaft 420 is located at the upper end of the diversion plate 400, the second driving member 520 is located inside the smoke collection chamber 110 and fixed to the top of the outer casing 100. The upper end of the auxiliary shaft 420 is provided with a second slot, and the output end of the second driving member 520 is provided with a second mounting hole. The auxiliary shaft 420 passes through the second mounting hole, and the second retainer is engaged with the second slot and located above the second mounting hole. The outer diameter of the second retainer is larger than the diameter of the second mounting hole.

[0069] The auxiliary shaft 420 is located at the lower end of the guide plate 400. The second driving component 520 is located inside the smoke collection chamber 110 and fixed to the bottom of the outer casing 100 to avoid interference between the two driving components, improve the convenience of movement, and reduce design difficulty.

[0070] The airflow guide plate 400 is plate-shaped, with a shorter dimension along the width direction of the outer shell 100 and a longer dimension along the height direction when perpendicular to the front-back direction. The airflow guide plate 400 has a curved plate-shaped structure to guide airflow while reducing noise.

[0071] In some embodiments, the first driving member 510 is located within the smoke collection chamber 110. In some embodiments, the first driving member 510 is located on top of the housing 100. In some embodiments, the first driving member 510 is located within the smoke collection chamber 110 and on top of the housing 100. This arrangement, on the one hand, protects the first driving member 510, and on the other hand, reduces the possibility of oil stains settling and covering the first driving member 510, thus ensuring performance.

[0072] Similarly, the second driving member 520 is located inside the smoke collecting cavity 110 and is fixed to the top of the housing 100.

[0073] In use, the user can use an electric pressure cooker or the like on the left side of the range hood, or can use an electric pressure cooker or the like on the right side of the range hood. The housing 100 has two side smoke inlets 130, which are respectively located on the two sides of the length direction of the housing 100 and are respectively arranged on the two sides of the fan 200. The range hood includes two guide plates 400, which are respectively arranged on the two sides of the fan 200 along the length direction of the housing 100 and correspond to the two side smoke inlets 130. The translation member 300 is provided at least twice, and each guide plate 400 corresponds to at least one translation member 300.

[0074] In order to prevent the oil fume on the left side of the range hood from escaping, the range hood further includes a smoke guide plate 600, which is arranged on the housing 100 and can be switched between a second open state and a second closed state to open or close the front smoke inlet 120.

[0075] In some embodiments, the housing 100 includes a main body portion 101 and a rear protruding portion 102, the length of the rear protruding portion 102 is less than the length of the main body portion 101, and the side smoke inlet 130 is arranged on the main body portion 101. In use, the rear protruding portion 102 is embedded in the mounting groove of the wall surface to reduce the visual thickness and improve the aesthetics of the entire range hood. At the same time, the length of the rear protruding portion 102 is relatively small, which facilitates the placement in the mounting groove and facilitates the blocking of the slot opening of the mounting groove by the main body portion 101.

[0076] The main body portion 101 is arranged with a blocking plate 103 near the rear end of the rear protruding portion 102, which is attached to the wall surface to improve the limiting effect and aesthetics. The blocking plate 103 includes two vertical portions and a horizontal portion, the two vertical portions are located at the two ends of the main body portion 101 along the length direction, and the horizontal portion is located at the lower end of the main body portion 101.

[0077] The mounting bracket 240 is connected to the housing 100, the fan 200 is fixed to the mounting bracket 240, and the oil fume can enter the rear air inlet 212 through the gap between the housing 100 and the fan 200. The fan 200 further includes a first filter screen, and the rear air inlet 212 is provided with the first filter screen. In other embodiments, the front smoke inlet 120 is provided with a second filter screen 610.

[0078] The embodiment also provides a use method of the range hood, which is applied to the range hood in any of the above embodiments. The use method of the range hood includes the following steps:

[0079] When the cookware is used on the cooktop in front of the range hood, it is determined whether the oil fume on one side of the range hood in the length direction exceeds the first preset concentration, if yes, the corresponding side of the guide plate 400 is opened, part of the oil fume enters the smoke collecting chamber 110 from the front smoke inlet 120 and enters the volute 210 from the front air inlet 211, and / or part of the oil fume enters the smoke collecting chamber 110 from the side smoke inlet 130 and enters the volute 210 from the rear air inlet 212; otherwise, the guide plate 400 remains in the first closed state, and the oil fume enters the smoke collecting chamber 110 from the front smoke inlet 120 and enters the volute 210 from the front air inlet 211.

[0080] When the cookware is used on one side of the range hood in the length direction, the guide plate 400 is opened, and the oil fume can enter the smoke collecting chamber 110 from the side smoke inlet 130. Among them, when the cookware is used on one side of the range hood in the length direction, the smoke guide plate 600 can not be opened.

[0081] The above method can cope with different application scenarios, and the arrangement of the front smoke inlet 120 and the side smoke inlet 130 increases the smoke inlet area, thereby improving the oil fume suction efficiency.

[0082] In addition, by opening the side smoke inlet 130, the gas can enter the smoke collecting chamber 110 from the side smoke inlet 130 and enter the volute 210 from the rear air inlet 212. In this process, the gas passes through the motor 220 of the fan 200 and carries away the heat generated by the motor 220, thereby dissipating heat for the motor 220 and keeping the temperature within a preset range, thereby facilitating the protection of the efficiency of the fan 200; finally, the guide plate 400 which can be translated and rotated can increase or decrease the air volume entering the volute 210 through the rear air inlet 212, adjust the cooling effect on the motor 220, and help to adapt to different application scenarios.

[0083] Specifically, when the cookware is used on the cooktop in front of the housing 100, the oil fume amount exceeds the preset value, a small amount of oil fume will escape to the side, and the guide plate 400 is in the first state, the second state or the third state, so that the oil fume enters the smoke collecting chamber 110 from the front side space of the side smoke inlet 130, thereby increasing the suction efficiency of the oil fume.

[0084] When the electric pressure cooker or other cooking utensil is used beside the range hood on the cooking bench, the oil fume concentration exceeds the first preset concentration and is less than the second preset concentration, and the working time of the range hood is less than the first preset time, the guide plate 400 is in the second state or the third state; preferably, the second state is used to reduce the pollution to the motor 220. When the oil fume concentration exceeds the first preset concentration and is less than the second preset concentration, and the working time exceeds the first preset time, the guide plate 400 is adjusted to the third state or the first state, and the flow of the oil fume entering the smoke collecting cavity 110 from the side smoke inlet 130 is increased; in addition, the oil fume enters the volute 210 from the rear air inlet 212 under the guidance of the guide plate 400 after entering the smoke collecting cavity 110, which can cool the motor 220 and ensure the efficiency of the fan 200.

[0085] When the electric pressure cooker or other cooking utensil is used beside the range hood on the cooking bench, and the oil fume concentration exceeds the second preset concentration, the speed of the motor 220 needs to be adjusted greatly, the guide plate 400 is adjusted to the first state or the third state, the side smoke inlet 130 sucks the oil fume or steam, so that the suction effect is ensured, the oil fume enters the smoke collecting cavity 110 from the side smoke inlet 130, and part of the oil fume enters the volute 210 from the rear air inlet 212 under the guidance of the guide plate 400, which can cool the motor 220 and ensure the efficiency of the fan 200.

[0086] When the time of using the cooking utensil in front of the range hood exceeds the second preset time, or when the cooking utensil is used in front of the range hood and the speed of the motor 220 exceeds the preset speed, the guide plate 400 is adjusted to the first state or the third state. Further, the angle of the guide plate 400 is adjusted to adjust the airflow flow entering the volute 210 from the rear air inlet 212, so that the temperature of the motor 220 is kept in the preset range.

[0087] The first preset time is less than the second preset time.

[0088] It should be noted that the use time of the cooking utensil can be detected by a time sensor on the cooking bench, and the oil fume concentration can be detected by a smoke concentration sensor. The detection of each judgment standard can also be realized by other means in the prior art, which is not the focus of the present application, and therefore will not be described in detail here.

[0089] Obviously, the above embodiments of the present application are only 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 scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made 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 by, 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 (210) of the fan (200) from the front air inlet (211) or the rear air inlet (212) of the fan (200) flows to the smoke outlet (140) via the air outlet of the fan (200). The motor (220) of the fan (200) is at least partially located behind the impeller (230). Translation member (300), which is movably disposed on the outer shell (100) along the thickness direction of the outer shell (100); A diversion plate (400) is provided between the diversion plate (400) and the translation member (300), one of which is provided with a rotating shaft (410) and the other with a rotating groove. The rotating shaft (410) extends along the height direction of the outer shell (100) and is rotatably disposed in the rotating groove. The diversion plate (400) is disposed in the smoke collection chamber (110) and extends at least partially into the side smoke inlet (130). It can move synchronously with the translation member (300) and can rotate relative to the translation member (300) about the axis of the rotating shaft (410) to adjust the flow rate of the fluid entering the smoke collection chamber (110) from the side smoke inlet (130) into the volute (210) from the rear air inlet (212).

2. The range hood according to claim 1, characterized in that The range hood further includes a first driving component (510), which is disposed on the outer casing (100). The output end of the first driving component (510) is connected to the translation component (300) to drive the translation component (300) to reciprocate along the thickness direction of the outer casing (100); or the output end of the first driving component (510) is connected to the diversion plate (400) to drive the diversion plate (400) to move and drive the translation component (300) to reciprocate along the thickness direction of the outer casing (100); and / or, The diversion plate (400) rotates between a first open state and a first closed state to open or close the side smoke inlet (130).

3. The range hood according to claim 2, wherein, The rotating groove is provided on the translation member (300), the rotating shaft (410) is provided on the diversion plate (400), the first driving member (510) includes a telescopic driving member, the telescopic driving member is hinged to the outer shell (100), and the output end is hinged to the rotating shaft (410).

4. The range hood according to claim 3, characterized in that The diversion plate (400) has a rotating shaft (410) at each end along the height direction. The range hood includes at least two translation members (300), wherein the two translation members (300) correspond to one diversion plate (400) and are arranged at intervals along the height direction of the outer shell (100). The two rotating shafts (410) are connected to the two translation members (300) in a one-to-one correspondence.

5. The range hood according to claim 2, wherein The diversion plate (400) is also provided with an auxiliary shaft (420). The auxiliary shaft (420) and the rotating shaft (410) are arranged at intervals along the length direction of the diversion plate (400). The range hood also includes a second driving member (520). The second driving member (520) is connected to the outer shell (100), and its output end is connected to the auxiliary shaft (420). It drives the auxiliary shaft (420) to drive the diversion plate (400) to rotate around the rotating shaft (410).

6. The range hood according to claim 2, wherein The first driving member (510) is located within the smoke collection chamber (110); and / or, The first drive unit (510) is located on top of the housing (100).

7. The range hood according to claim 1, wherein The translation component (300) is a slider, and the outer casing (100) is provided with a slide rail (310) extending along the thickness direction, the slider being slidably disposed on the slide rail (310); and / or, The rotating groove is provided on the diversion plate (400), and the rotating shaft (410) is provided on the translation member (300).

8. The range hood according to any one of claims 1-7, characterized in that, The outer casing (100) has two side smoke inlets (130), which are located on both sides of the length of the outer casing (100) and are respectively disposed on both sides of the fan (200); the range hood includes two guide plates (400), which correspond one-to-one with the two side air inlets and are disposed on both sides of the fan (200) along the length of the outer casing (100); at least two translation members (300) are provided, and each guide plate (400) corresponds to at least one translation member (300).

9. The range hood according to any one of claims 1-7, characterized in that, The range hood further includes a smoke guide plate (600), which is disposed on the outer casing (100) and can be switched between a second open state and a second closed state to open or close the forward smoke inlet (120); and / or, The outer casing (100) includes a main body (101) and a rear protrusion (102), the length of which is less than the length of the main body (101), and the side smoke inlet (130) is provided on the main body (101).

10. A method of using a range hood, applicable to the range hood as described in any one of claims 1-9, characterized in that, Includes the following steps: When cooking utensils are used on the stove in front of the range hood, it is determined whether the oil fumes on one side of the range hood along its length exceed a first preset concentration. If so, the corresponding side deflector plate (400) is opened, and some oil fumes enter the smoke collection chamber (110) from the front smoke inlet (120) and enter the volute (210) from the front air inlet (211) and / or some oil fumes enter the smoke collection chamber (110) from the side smoke inlet (130) and enter the volute (210) from the rear air inlet (212); otherwise, the deflector plate (400) remains in the first closed state, and oil fumes enter the smoke collection chamber (110) from the front smoke inlet (120) and enter the volute (210) from the front air inlet (211). When cooking appliances are used on one side of the range hood along its length, the deflector plate (400) is opened, and the fumes can enter the smoke collection chamber (110) from the side smoke inlet (130).

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