Fan module, range hood and control method of range hood

Abstract

The invention relates to a fan module, a range hood and a control method of the range hood, and the fan module comprises an air outlet main body which is provided with an air cavity and an air outlet communicating with the air cavity; the air outlet piece is arranged in the air cavity and used for conveying airflow to the air outlet; the air sweeping blade is rotatably arranged in the air cavity and adjacent to the air outlet, and the air sweeping blade (14) is provided with an arc-shaped air sweeping face facing the interior of the air cavity; the flow guide part is arranged in the air cavity, and the bottom face, facing the air sweeping blades, of the flow guide part is arranged to be an inclined face avoiding the air sweeping path of the air sweeping blades. According to the air sweeping device, firstly, the arc-shaped air sweeping face can enable the air sweeping angle to be larger, and therefore the requirements of users with different heights are met; and secondly, the bottom surface of the flow guide part is obliquely arranged, so that a larger space can be formed in the air cavity to accommodate the arc-shaped air sweeping blades, and therefore, the air sweeping range can be expanded through the structural characteristics of the air sweeping blades, the probability of direct blowing to the head of the user is reduced, and the experience feeling of the user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and particularly to a fan module, a range hood and a control method thereof. Background Art

[0002] Range hoods have become a household appliance with a relatively high penetration rate in modern kitchen environments. They can absorb cooking fumes, avoid environmental pollution caused by cooking fumes, and prevent health problems for the human body. However, they cannot effectively solve the problem of the high temperature felt by the human body during the cooking process, making users feel hot and uncomfortable when cooking. Therefore, currently, a fan or an air conditioner is usually added to the structure of the range hood, and both the fan and the air conditioner can play a role in cooling.

[0003] However, installing an air conditioner in a range hood currently increases the overall cost and has a complex installation structure. The fan installed in the range hood is likely to affect the stove fire during the blowing process, and the blowing angle range is also very limited, affecting the sweeping effect and easily directly blowing on the user's head, thus affecting the user experience during use. Summary of the Invention

[0004] Based on this, in view of the problem of poor blowing effect of the fan in the current range hood, it is necessary to provide a fan module, a range hood and a control method thereof.

[0005] In a first aspect, the present application provides a fan module applied to a range hood. The fan module includes:

[0006] An air outlet main body having an air cavity inside, and an air outlet communicating with the air cavity is opened in the air outlet main body along the horizontal direction;

[0007] An air outlet member disposed in the air cavity and configured to deliver air flow to the air outlet;

[0008] A sweeping blade rotatably disposed in the air cavity and adjacent to the air outlet. The sweeping blade has an arc-shaped sweeping surface facing the inside of the air cavity; and

[0009] A guiding member disposed in the air cavity, and a bottom surface of the guiding member facing the sweeping blade is set as an inclined surface avoiding the sweeping path of the sweeping blade.

[0010] Thus, the setting of the arc-shaped sweeping surface can enable the sweeping blade to have a larger sweeping angle. At the same time, the bottom surface of the guiding member is inclined, so that the sweeping blade can be better accommodated below the bottom surface of the guiding member. The sweeping range can be expanded through the self-structural characteristics of the sweeping blade, and the probability of directly blowing on the user's head can be reduced, thereby improving the user experience.

[0011] In some embodiments, the deflector is inclined upward relative to the horizontal direction towards the bottom surface of the oscillating blade, and the deflector, the cavity wall of the air cavity, and the air outlet together define an accommodation space for accommodating the oscillating blade.

[0012] Thus, the bottom surface of the deflector is inclined upward, providing a larger accommodation space for the arc-shaped oscillating blade without affecting air outlet, and the inclined surface can also play a certain guiding role for the air flow, enabling the air flow to better pass through the oscillating blade and be sent out from the air outlet.

[0013] In some embodiments, the oscillating blade is rotatably arranged in the accommodation space and has a sweeping state in which at least part of it extends out of the air outlet. The oscillating blade includes at least two blades; in the sweeping state, the blades are arranged at intervals in the vertical direction to form air ducts communicating the air cavity and the air outlet between every two adjacent blades.

[0014] Thus, by providing at least two blades and arranging the blades at intervals, a plurality of air ducts can be formed at the air outlet, and the blades are rotationally matched with each other, so that the air supply direction of each air duct can be changed, thereby further expanding the air supply range of the fan module and enabling the fan module to better meet the use requirements.

[0015] In some embodiments, the blades are all arc-shaped blades.

[0016] First, since the bottom surface of the inclined deflector and the air cavity and the air outlet together define a larger accommodation space, the arc-shaped blades can be better accommodated. Second, the arc-shaped blades have a longer cross-sectional length, which is beneficial to improving the sweeping effect. Second, when the arc-shaped blades rotate to the lowest point, the sweeping height can be further reduced, and the sweeping range is larger. If the user is relatively tall, the lower sweeping height can effectively avoid direct blowing on the user's head. Thus, by setting the oscillating blade as an arc-shaped blade, the sweeping effect can be effectively improved, the sweeping range can be further expanded, and the use experience can be improved.

[0017] In some embodiments, the oscillating blade further has a closed state in which it is received in the accommodation space. When the oscillating blade is in the closed state, the blades are flipped to the inside of the air outlet body.

[0018] With the above structure, not only can the oscillating blade be well received in the accommodation space in the closed state, but also in the sweeping state, at least part of the oscillating blade extends out of the air outlet, which can further increase the sweeping ability and further reduce the sweeping height.

[0019] In some embodiments, the oscillating blade includes a first blade and a second blade. When the first blade and the second blade are in the oscillating state, the first blade is vertically above the second blade; wherein, the length of the first blade is greater than the length of the second blade.

[0020] By providing the first blade and the second blade, not only can the oscillation be smoothly achieved, but also the outgoing air flow can be effectively prevented from being blocked, ensuring the air output volume and making the cooling effect of the fan module better.

[0021] In some embodiments, the first blade is an arc-shaped blade, and the arc radius of the first blade is R1, and the arc angle of the first blade is Θ1, where 50 mm ≤ R1 ≤ 55 mm; and / or, 40° ≤ Θ1 ≤ 45°.

[0022] The above range can, on the basis of increasing the oscillation range, ensure that the air output volume at the air outlet does not decrease significantly, the flow rate has no obvious loss, and the oscillation effect is improved.

[0023] In some embodiments, the second blade is an arc-shaped blade, and the arc radius of the second blade is R2, and the arc angle of the second blade is Θ2, where 30 mm ≤ R2 ≤ 40 mm; and / or, 30° ≤ Θ2 ≤ 35°.

[0024] The above range can, on the basis of increasing the oscillation range, ensure that the air output volume at the air outlet does not decrease significantly, the flow rate has no obvious loss, and the oscillation effect is improved.

[0025] In some embodiments, the oscillating state includes a first oscillation mode and a second oscillation mode. In the first oscillation mode, the oscillation angle range of each blade is -50° to 0°; in the second oscillation mode, the oscillation angle range of each blade is -50° to -20°.

[0026] By providing the first oscillation mode and the second oscillation mode, the oscillating blade can have different oscillation angle ranges, so as to meet the needs of users with different heights and effectively avoid the situation that the fan module blows directly at the user's head when blowing.

[0027] In some embodiments, the fan module further includes a control member and a detection member connected by communication. The detection member is used to detect the user's height. The control member is communicatively connected to each blade and is used to control each blade to switch between the first oscillation mode and the second oscillation mode according to the detection result of the detection member.

[0028] With the above structure, the swing mode of the swing blade can be better switched according to the user's height, so that the swing angle and swing height can better match the user's height, effectively avoiding direct blowing on the user's head and improving the user experience.

[0029] In some embodiments, in the horizontal direction, the distance between the rotation center of the swing blade and the air outlet is in the range of 10 mm to 20 mm;

[0030] And / or, in the vertical direction, the distance between the rotation center of the swing blade and the bottom wall of the air cavity is in the range of 30 mm to 40 mm.

[0031] In some embodiments, the fan module further includes a baffle, which is movably arranged on the air outlet body and is used to open or close the air outlet.

[0032] By providing the baffle, the swing blade can be better received in the accommodation space, and the baffle can also play a certain role in pressing the air flow in the upper part of the accommodation space, which is more conducive to the downward flow of the air flow.

[0033] In a second aspect, the present application further provides a range hood, including a range hood main body and the above-mentioned fan module, a smoke collecting cavity is formed on the range hood main body, and the fan module is arranged on the range hood main body.

[0034] In a third aspect, the present application further provides a control method for a range hood, which is used to control the above-mentioned range hood, and the control method includes the following steps:

[0035] Open the air outlet member to form an air flow in the air cavity and blow it out from the air outlet;

[0036] Control the swing blade to rotate according to the user's height to change the blowing direction of the air flow from the air outlet.

[0037] In some embodiments, before the step of opening the air outlet member to form an air flow in the air cavity and blow it out from the air outlet, the following steps are further included:

[0038] Open the air outlet, and control the swing blade to rotate from the closed state to the swing state.

[0039] In some embodiments, in the step of controlling the swing blade to rotate according to the user's height to change the blowing direction of the air flow from the air outlet, the following steps are specifically included:

[0040] Detect and judge the user's height;

[0041] When the user's height is within the first range, control the swing blade to rotate to the first swing mode;

[0042] When the user's height is within the second range, control the swing blades to rotate to the second swing mode.

[0043] In some embodiments, the first range is greater than or equal to 1.7 m. In the first swing mode, the swing angle range of the swing blades is -50° to 0°; and / or, the second range is less than 1.7 m. In the second swing mode, the swing angle range of the swing blades is -50° to -20°.

[0044] For the above-mentioned fan module, range hood and its control method, firstly, the arc-shaped swing surface of the swing blades can enable a larger swing angle, forming a larger swing range, which can meet the needs of users with different heights and effectively avoid directly blowing on the heads of users with different heights; secondly, by obliquely arranging the bottom surface of the flow guide member, there is a larger space in the air cavity to accommodate the arc-shaped swing blades. In this way, the swing range can be expanded through the structural characteristics of the swing blades themselves, reducing the probability of directly blowing on the user's head, thereby improving the user experience. Description of the Drawings

[0045] Figure 1 It is a schematic diagram of the overall structure of a range hood according to one or more embodiments.

[0046] Figure 2 It is a schematic diagram of the structure of the fan module in the swing state in a range hood according to one or more embodiments.

[0047] Figure 3 It is a schematic diagram of the structure of the fan module in the current range hood.

[0048] Figure 4 It is a simulation cloud diagram of the wind speed distribution when the swing angle of the fan module in the current range hood is -50°.

[0049] Figure 5 It is a schematic diagram of the structure of the fan module in the closed state in a range hood according to one or more embodiments.

[0050] Figure 6 It is a schematic diagram of the structure of the fan module in the second swing mode in a range hood according to one or more embodiments.

[0051] Figure 7 It is a schematic diagram of the structure of the fan module in the first swing mode in a range hood according to one or more embodiments.

[0052] Figure 8 It is a simulation cloud diagram of the wind speed distribution when the swing angle of the fan module in a range hood according to one or more embodiments is 0°.

[0053] Figure 9The simulation cloud map of the wind speed distribution of the fan module in the range hood according to one or more embodiments when the sweeping angle is -20°.

[0054] Figure 10 The simulation cloud map of the wind speed distribution of the fan module in the range hood according to one or more embodiments when the sweeping angle is -50°.

[0055] Figure 11 The schematic flow chart of the control method of the range hood according to one or more embodiments.

[0056] Explanation of reference numerals: 100, range hood; 200, user's head; 1, blade; 2, top surface; 10, fan module; 20, main body of the range hood; 30, smoke collecting cavity; 40, cooking range; 50, cookware; 11, air outlet main body; 12, air outlet part; 13, flow guiding part; 14, sweeping blade; 15, baffle; 111, air cavity; 112, air outlet; 141, first blade; 142, second blade. Detailed implementation manners

[0057] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0058] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0059] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0060] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0062] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation manner.

[0063] Refer to Figure 1 and Figure 2 , an embodiment of this application provides a fan module 10 applied to a range hood 100. The fan module 10 includes an air outlet main body 11, an air outlet member 12, a flow guiding member 13 and a sweeping blade 14. The inside of the air outlet main body 11 has an air cavity 111, and an air outlet 112 communicating with the air cavity 111 is opened in the air outlet main body 11 along the horizontal direction. The air outlet member 12 is disposed in the air cavity 111 and is used for delivering air flow to the air outlet 112. The sweeping blade 14 is rotatably disposed in the air cavity 111 and is adjacent to the air outlet 112. The sweeping blade 14 has an arc-shaped sweeping surface facing the inside of the air cavity 111. The flow guiding member 13 is disposed in the air cavity 111, and the bottom surface facing the sweeping blade 14 is set as an inclined surface avoiding the sweeping path of the sweeping blade 14.

[0064] It should be noted that in daily life, the range hood 100 has become an important household appliance. The range hood 100 can absorb oil fumes and keep the indoor environment clean. However, when the user is cooking, although the range hood 100 can remove oil fumes, it cannot improve the high-temperature environment, making people feel hot and uncomfortable.

[0065] Under such a premise, there have emerged some range hoods 100 with air conditioners or fans. Among them, the range hood 100 with an air conditioner has a high cost, a cumbersome installation process, and weak market competitiveness. And the fans currently set in the range hood 100 have a very limited air supply range. During the blowing process, it is easy to affect the stove fire and is also easy to directly blow the user's head 200, affecting the user experience.

[0066] Specifically, as Figure 3 shown, in the current range hood fan structure, the blade 1 is usually set as a straight blade, and the top surface 2 of the air outlet duct is horizontally set. In this way, the overall height H of the air outlet duct is the same as the height of the air outlet, and the overall height is not high. As a result, the accommodation space for the blade 1 in the air outlet duct is limited, resulting in the length of the blade 1 unable to be further lengthened, and the height of the air outlet airflow further decreasing. As Figure 4 shown, the range of the sweeping angle is relatively small, resulting in a relatively low minimum sweeping height that can be reached, only 1.5 m. For users below 1.7 m, it is easy to directly blow the head, which is likely to cause discomfort.

[0067] Based on this, the present application discloses a fan module 10. The fan module 10 can be installed on the range hood 100 and is used for blowing air during the use of the range hood 100 to cool the use environment and improve the user experience.

[0068] Specifically, the fan module 10 includes an air outlet main body 11, an air outlet member 12, a guiding member 13, and a sweeping blade 14. Among them, the air outlet main body 11 is installed on the range hood 100. The inside of the air outlet main body 11 is hollow to form an air cavity 111, and an air outlet 112 is opened on the air outlet main body 11. The air outlet 112 is communicated with the air cavity 111 and is opened in the horizontal direction. In this way, when the user is using the range hood 100, the air can be blown towards the direction where the user is located through the air outlet 112 to achieve cooling.

[0069] Furthermore, the air outlet member 12 refers to a structure that can form an air flow to achieve blowing. The air outlet member 12 can be, but is not limited to, set as a cross-flow fan or other fans. The air outlet member 12 is arranged in the air cavity 111, and the air outlet member 12 can blow air out through the air outlet 112.

[0070] The sweeping blade 14 refers to a structure capable of changing the blowing direction of the air outlet 112. The sweeping blade 14 is rotatably arranged in the air cavity 111. By adjusting the rotation angle of the sweeping blade 14, the output direction of the airflow at the air outlet 112 can be changed, thereby adjusting the air supply direction.

[0071] Furthermore, the side surface of the wind sweeping blade 14 facing the inside of the wind cavity 111 is set as a curved wind sweeping surface. In this way, the length of the wind sweeping blade 14 can be set longer, and the curved wind sweeping surface can expand the wind sweeping width and wind sweeping range and reduce the wind sweeping height.

[0072] That is to say, the curved wind sweeping surface allows the wind sweeping blade 14 to have a lower wind sweeping height and a larger wind sweeping angle, thereby avoiding direct blowing on the user's head.

[0073] The guide member 13 is also disposed in the air cavity 111 and is horizontally located between the air outlet member 12 and the air outlet 112. In this way, the guide member 13 can guide the airflow formed by the air outlet member 12 so that the airflow is blown out from the air outlet 112 smoothly.

[0074] As a specific embodiment, the flow guide member 13 may be configured as a volute tongue, or an additional flow guide structure may be provided on the volute tongue to play a flow guide role.

[0075] The bottom surface of the air guide 13 facing the wind sweeping blade 14 is set as an inclined surface to avoid the wind sweeping path of the wind sweeping blade 14, wherein the wind sweeping path of the wind sweeping blade 14 refers to the path that the wind sweeping blade 14 passes through during the process of the wind sweeping blade 14 sweeping the wind by rotating, that is, the rotation path of the wind sweeping blade 14.

[0076] Thus, a larger storage space can be provided for the longer sweeping blades 14 with curved sweeping surfaces, and the inclined bottom surface can also guide the airflow to a certain extent, so that the airflow can flow to the air outlet 112 more smoothly.

[0077] Therefore, the setting of the curved wind sweeping surface can make the wind sweeping blade 14 have a larger wind sweeping angle, that is, the airflow blown out from the air outlet 112 has a larger blowing range; at the same time, the bottom surface of the guide member 13 is tilted so that the wind sweeping blade 14 can be better stored under the bottom surface of the guide member 13. The wind sweeping range can be expanded through the structural characteristics of the wind sweeping blade 14 itself, and the probability of direct blowing on the user's head can be reduced, thereby improving the user experience.

[0078] In some embodiments, the bottom surface of the air guide 13 facing the wind sweeping blade 14 is tilted upward relative to the horizontal direction. The air guide 13 , the cavity wall of the air cavity 111 , and the air outlet 112 together define an accommodating space for accommodating the wind sweeping blade 14 .

[0079] Among them, the flow guide member can be set as a volute tongue, and the cavity wall of the air cavity 111 can be formed into a volute. Compared with the traditional horizontally arranged flow guide surface, the bottom surface of the upwardly inclined flow guide member 13 can define a larger accommodation space, providing a larger installation and rotation space for the sweeping blade 14.

[0080] Therefore, the bottom surface of the flow guide member 13 is upwardly inclined, providing a larger accommodation space for the arc-shaped sweeping blade 14 without affecting the air outlet, and the inclined surface can also play a certain guiding role in the air flow, enabling the air flow to better pass through the sweeping blade 14 and be sent out from the air outlet 112.

[0081] In some embodiments, the sweeping blade 14 is rotatably arranged in the accommodation space and has a sweeping state in which at least a part thereof extends out of the air outlet 112. The sweeping blade 14 includes at least two blades; in the sweeping state, the blades are arranged at intervals in the vertical direction to form a air duct communicating the air cavity 111 and the air outlet 112 between every two adjacent blades.

[0082] Specifically, the sweeping blade 14 can be set as two or more blades. In this way, an air duct can be formed between every two adjacent blades, and the cooperation of each air duct can further expand the air supply range.

[0083] Each blade is rotatably arranged in the accommodation space and can rotate clockwise or counterclockwise. The specific rotation direction of the blade can be adjusted according to the air supply direction during actual use, which will not be elaborated here.

[0084] When the sweeping blade 14 is in the sweeping state, it means that the fan module 10 is in the working state. At this time, at least a part of the sweeping blade 14 extends out of the air outlet 112, and the air outlet member 12 is turned on to send air out through the air outlet 112 and the sweeping blade 14.

[0085] Furthermore, when the sweeping blade 14 is in the sweeping state, since at least a part of the sweeping blade 14 extends out of the air outlet 112, the sweeping ability can be further increased and the sweeping height can be further reduced.

[0086] Therefore, by setting at least two blades and arranging the blades at intervals, a plurality of air ducts can be formed at the air outlet 112. The blades rotate in cooperation with each other, and the air supply direction of each air duct can be changed, so as to further expand the air supply range of the fan module 10 and enable the fan module 10 to better meet the use requirements.

[0087] In some embodiments, each blade is an arc-shaped blade.

[0088] Specifically, each blade is set as an arc-shaped blade, that is, the surface of each blade facing the air cavity 111 or the air outlet 112 is set as an arc surface.

[0089] First, since the bottom surface of the inclined deflector 13 defines a larger accommodation space between the air cavity 111 and the air outlet 112, it can better accommodate the arc-shaped blades. Second, the arc-shaped blades have a longer length along the air outlet direction, which is beneficial to improving the air-sweeping effect.

[0090] In addition, when the arc-shaped blade rotates to the lowest point, it can further reduce the air-sweeping height and has a larger air-sweeping range. If the user is relatively tall, the lower air-sweeping height can effectively avoid direct blowing on the user's head.

[0091] Thus, by setting the air-sweeping blade 14 as an arc-shaped blade, the air-sweeping effect can be effectively improved, and the air-sweeping range can be further expanded, improving the user experience.

[0092] As Figure 2 and Figure 5 shown, in some embodiments, the air-sweeping blade 14 also has a closed state of being received in the accommodation space. When the air-sweeping blade 14 is in the closed state, each blade flips to the inside of the air outlet body 11.

[0093] Specifically, the air-sweeping blade 14 can be switched between the closed state and the air-sweeping state by rotation. When the air-sweeping blade 14 is in the closed state, it means that the fan module 10 is in the closed state, and at this time, each blade is received in the accommodation space.

[0094] When the air-sweeping blade 14 is in the air-sweeping state, it means that the fan module 10 is in the working state. At this time, at least part of the air-sweeping blade 14 extends out of the air outlet 112, and the air outlet member 12 is turned on to send air out through the air outlet 112 and the air-sweeping blade 14.

[0095] Further, when the air-sweeping blade 14 is in the closed state, each blade flips to the inside of the air outlet body 11, so that the storage of each blade in the closed state can be realized.

[0096] Thus, through the above structure, not only can the air-sweeping blade 14 be well received in the accommodation space in the closed state, but also at least part of the air-sweeping blade 14 extends out of the air outlet 112 in the air-sweeping state, which can further increase the air-sweeping ability and further reduce the air-sweeping height.

[0097] In some embodiments, the sweeping blade 14 includes a first blade 141 and a second blade 142. When the first blade 141 and the second blade 142 are in the sweeping state, the first blade 141 is located above the second blade 142 in the vertical direction. Among them, the length of the first blade 141 is greater than the length of the second blade 142.

[0098] It should be noted that the length of the first blade 141 and the length of the second blade 142 refer to the curve length of the profile trajectories of the first blade 141 and the second blade 142 along the vertical direction. Among them, if the profiles of the first blade 141 and the second blade 142 along the vertical direction are straight blades, the lengths of the first blade 141 and the second blade 142 are the lengths of the line segments at both ends; if the profiles of the first blade 141 and the second blade 142 along the vertical direction are arc-shaped blades, the lengths of the first blade 141 and the second blade 142 are the lengths of the arc curves.

[0099] As a specific embodiment, the sweeping blade 14 can be set as two blades, namely the first blade 141 and the second blade 142. When the first blade 141 and the second blade 142 are in the sweeping state, the first blade 141 is located above the second blade 142 in the vertical direction, and the length of the first blade 141 is greater than the length of the second blade 142.

[0100] That is to say, during the sweeping process, the first blade 141 with a larger length is located above, and the second blade 142 with a smaller length is located below. In this way, the first blade 141 located above can be used to control the angle of the outgoing air flow and mainly play the role of sweeping. And the second blade 142 located below plays the role of guiding the air flow inside the air cavity 111 upward to prevent the air flow from directly blowing out from the lower outlet.

[0101] In addition, the shorter second blade 142 is located below, which can also avoid blocking the outgoing air flow and can ensure the air output as much as possible.

[0102] Thus, by setting the first blade 141 and the second blade 142, not only can the sweeping be smoothly realized, but also the blocking of the outgoing air flow can be effectively avoided, the air output can be ensured, and the cooling effect of the fan module 10 can be better.

[0103] Please refer to Figure 2 and Figure 6 , in some embodiments, the first blade 141 is an arc-shaped blade, and the arc radius of the first blade 141 is R1, and the arc angle of the first blade 141 is Θ1, where 50 mm ≤ R1 ≤ 55 mm; and / or, 40° ≤ Θ1 ≤ 45°.

[0104] Specifically, the range of R1 can be set to 50 mm to 55 mm, and / or the range of Θ1 can be set to 40° to 45°.

[0105] As a specific embodiment, the arc radius R1 of the first blade 141 can be but is not limited to being set to 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, and the arc angle Θ1 of the first blade 141 can be but is not limited to being set to 40°, 41°, 42°, 43°, 44°, 45°.

[0106] Thus, within the above ranges, on the basis of increasing the air-sweeping range, it can be ensured that the air volume at the air outlet 112 does not decrease significantly, the flow rate has no obvious loss, and the air-sweeping effect is improved.

[0107] As Figure 6 shown, in some embodiments, in the horizontal direction, the distance D1 between the rotation center of the air-sweeping blade 14 and the air outlet 112 ranges from 10 mm to 20 mm; and / or, in the vertical direction, the distance D2 between the rotation center of the air-sweeping blade 14 and the bottom side of the cavity wall of the air cavity 111 ranges from 30 mm to 40 mm.

[0108] As a specific embodiment, in the horizontal direction, the distance D1 between the rotation center of the air-sweeping blade 14 and the air outlet 112 can be but is not limited to being set to 11 mm; of course, in some other embodiments, the distance D1 between the rotation center of the air-sweeping blade 14 and the air outlet 112 can also be set to 10 mm, 15 mm, 20 mm. In the vertical direction, the distance D2 between the rotation center of the air-sweeping blade 14 and the bottom side of the cavity wall of the air cavity 111 can be but is not limited to being set to 35 mm; of course, in some other embodiments, the distance D2 between the rotation center of the air-sweeping blade 14 and the bottom side of the cavity wall of the air cavity 111 can also be set to 30 mm, 38 mm, 40 mm.

[0109] In this way, in the closed state, the air-sweeping blade 14 can be better accommodated inside the air outlet main body 11. And in the air-sweeping state, the air-sweeping blade 14 can form a larger air-sweeping range.

[0110] In some embodiments, the second blade 142 is an arc-shaped blade, and the arc radius of the second blade 142 is R2, and the arc angle of the second blade 142 is Θ2, where 30 mm ≤ R2 ≤ 40 mm; and / or, 30° ≤ Θ2 ≤ 35°.

[0111] Specifically, the range of R2 can be set to 30 mm to 40 mm, and / or the range of Θ2 can be set to 30° to 35°.

[0112] As a specific embodiment, the arc radius R2 of the second blade 142 can be, but is not limited to, set to 30 mm, 32 mm, 34 mm, 36 mm, 38 mm, 40 mm, and the arc angle Θ2 of the second blade 142 can be, but is not limited to, set to 30°, 31°, 32°, 33°, 34°, 35°.

[0113] Thus, within the above ranges, on the basis of increasing the air-sweeping range, it is ensured that the air volume at the air outlet 112 does not decrease significantly, there is no obvious loss in flow rate, and the air-sweeping effect is improved.

[0114] As Figure 6 and Figure 7 shown, in some embodiments, the air-sweeping state includes a first air-sweeping mode and a second air-sweeping mode. In the first air-sweeping mode, the air-sweeping angle a of each blade ranges from -50° to 0°; in the second air-sweeping mode, the air-sweeping angle a of each blade ranges from -50° to -20°.

[0115] Among them, the air-sweeping angle a refers to the angle between the line connecting the two end points of the air-sweeping blade 14 and the horizontal plane.

[0116] Specifically, during the air-sweeping process, it can also be divided into a first air-sweeping mode and a second air-sweeping mode. Among them, in the first air-sweeping mode and the second air-sweeping mode, the air-sweeping angle ranges of each blade are different.

[0117] In addition, in one of the embodiments, in the first air-sweeping mode or the second air-sweeping mode, each blade can be adjusted as a whole for the air-sweeping angle a. In other embodiments, in the first air-sweeping mode, the air-sweeping angle a of each blade can also be adjusted separately; or in the second air-sweeping mode, the air-sweeping angle a of each blade can also be adjusted separately.

[0118] It can be understood that different users may have different requirements for the air-sweeping angle due to different heights or other conditions when using.

[0119] For example, for users with relatively high heights, they may require a relatively high air-sweeping angle, while for users with relatively short heights, they may require a relatively low air-sweeping angle.

[0120] Therefore, the air-sweeping state includes a first air-sweeping mode and a second air-sweeping mode. In the first air-sweeping mode, the air-sweeping angle range of each blade is from -50° to 0°, and at this time, the air-sweeping height range is between 1.3 m and 1.55 m, which can meet the needs of users with relatively high heights. While in the second air-sweeping mode, the air-sweeping angle range of each blade is from -50° to -20°, and at this time, the air-sweeping height range is between 1.3 m and 1.4 m, which can meet the needs of users with relatively short heights.

[0121] Among them, the swing height refers to the height from the point where the highest wind speed blown out from the air outlet 112 reaches the user to the ground.

[0122] Thus, by setting the first swing mode and the second swing mode, each blade can have different swing angle ranges, so as to meet the needs of users with different heights, and can effectively avoid the situation that the fan module 10 blows directly at the user's head when blowing.

[0123] In some embodiments, the fan module 10 further includes a control member (not shown in the figure) and a detection member (not shown in the figure) connected by communication. The detection member is used to detect the user's height. The control member is communicatively connected to each blade and is used to control each blade to switch between the first swing mode and the second swing mode according to the detection result of the detection member.

[0124] Specifically, the detection member refers to a structure capable of detecting the user's height. The detection member can be, but is not limited to, set as an infrared sensor. The infrared sensor is set at the corresponding position of the air outlet main body 11 or other structures of the range hood 100, as long as it can detect the user's height.

[0125] The control member is communicatively connected to the detection member and each blade respectively. When the detection member detects the user's height, it transmits the detection result to the control member, and the control member controls each blade to switch between the first swing mode and the second swing mode according to the detection result.

[0126] For example, when the detection member detects that the user's height is above 1.7 m, the control member can control each blade to switch to the first swing mode, so that the swing height range is between 1.3 m and 1.55 m. When the detection member detects that the user's height is below 1.7 m, the control member can control each blade to switch to the second swing mode, so that the swing height range is between 1.3 m and 1.4 m.

[0127] Figure 8 Shows the simulation cloud diagram of the wind speed distribution when the swing angle of the fan module is 0°, Figure 9 Shows the simulation cloud diagram of the wind speed distribution when the swing angle of the fan module is -20°, Figure 10 Shows the simulation cloud diagram of the wind speed distribution when the swing angle of the fan module is -50°. It can be seen that the swing height of the fan module of the present application is significantly lower when the swing angle is -50° than Figure 4 which can effectively avoid directly blowing above the forehead and causing discomfort to the user, and at the same time can ensure that it blows below the nose of users with different heights, including the neck.

[0128] In addition, from Figures 8 - 10 it can be seen that when the swing blade 14 of the fan module is an arc-shaped blade, as the swing angle decreases, the swing height gradually decreases.

[0129] Thus, according to the different heights of users, the air-sweeping height can be adjusted more flexibly, effectively avoiding direct blowing on the heads of users.

[0130] It can be understood that the detected height range can be adjusted according to the actual situation. For example, it can be set to above 1.6m and below 1.6m, or set to above 1.8m and below 1.8m, which will not be elaborated here.

[0131] Through the above structure, the air-sweeping mode of the air-sweeping blade 14 can be better switched according to the user's height, so that the air-sweeping angle and air-sweeping height can better match the user's height, effectively avoiding direct blowing on the user's head and improving the usage experience.

[0132] In some embodiments, the fan module 10 further includes a baffle 15, which is movably arranged on the air outlet main body 11 and is used to open or close the air outlet 112.

[0133] Specifically, the baffle 15 can be slidably arranged at the air outlet 112. In this way, when the baffle 15 slides downward, the air outlet 112 can be closed, and when the baffle 15 slides upward, the air outlet 112 can be opened.

[0134] Furthermore, on the basis of not changing the moving stroke of the baffle 15 at the air outlet 112, the bottom surface of the flow guide member 13 is inclined, which can increase the accommodating space, so that there is more space to accommodate the lengthened air-sweeping blade 14 and enhance the air-sweeping effect.

[0135] In addition, the baffle 15 can also play a certain role in pressing the air flow at the upper part of the accommodating space, which is more conducive to the downward flow of the air flow.

[0136] Thus, by setting the baffle 15, the air-sweeping blade 14 can be better accommodated in the accommodating space, and the baffle 15 can also play a certain role in pressing the air flow at the upper part of the accommodating space, which is more conducive to the downward flow of the air flow.

[0137] Please refer to again Figure 1 , based on the same concept as the above fan module 10, the present application also provides an oil fume machine 100, which includes a machine body 20 of the oil fume machine and the fan module 10 as described above. A smoke collecting cavity 30 is formed on the machine body 20 of the oil fume machine, and the fan module 10 is arranged on the machine body 20 of the oil fume machine and is located above the smoke collecting cavity 30.

[0138] In addition, a cooking range 40 is usually arranged directly below the smoke collecting cavity 30, and the cookware 50 can be placed on the cooking range 40.

[0139] As Figure 11As shown, based on the same concept as the above-mentioned range hood 100, the present application also provides a control method for the range hood 100 to control the range hood 100 as described above. The control method includes the following steps:

[0140] S20: Open the air outlet member 12 to form an air flow in the air cavity 111 and blow it out from the air outlet 112.

[0141] S40: Control the rotation of the air-sweeping blade 14 according to the user's height to change the blowing direction of the air flow from the air outlet 112.

[0142] When using the range hood 100, first open the air outlet member 12. The air outlet member 12 can form an air flow in the air cavity 111 and blow it out from the air outlet 112 to achieve air supply.

[0143] Furthermore, control the rotation angle of the air-sweeping blade 14 in the accommodation space according to the actual height of the user. In this way, the blowing direction of the air flow can be changed according to the user's height, so that the air-sweeping height of the air-sweeping blade 14 can better match the user's height, effectively avoiding direct blowing on the user's head.

[0144] In some embodiments, before step S20, the method further includes the steps:

[0145] S10: Open the air outlet 112 and control the air-sweeping blade 14 to rotate from the closed state to the air-sweeping state.

[0146] In the initial state, the baffle 15 blocks the air outlet 112. At this time, the air-sweeping blade 14 is received in the air cavity 111 and the air outlet 112 is closed. When in use, slide the baffle 15 upward to open the air outlet 112 and control the air-sweeping blade 14 to rotate by a certain angle, from the closed state to the air-sweeping state, so as to achieve air-sweeping in different ranges through the air-sweeping blade 14.

[0147] In some embodiments, in step S40, it specifically includes the following steps:

[0148] S41: Detect and judge the user's height.

[0149] S42: When the user's height is within the first range, control the air-sweeping blade 14 to rotate to the first air-sweeping mode.

[0150] S43: When the user's height is within the second range, control the air-sweeping blade 14 to rotate to the second air-sweeping mode.

[0151] Specifically, a detection component, such as an infrared sensor, is used to detect the user's height to obtain a detection result. The detection result is compared with a first range and a second range. When the detection result is within the first range, the control component controls the swing blade 14 to rotate to the first swing mode. When the detection result is within the second range, the control component controls the swing blade 14 to rotate to the second swing mode.

[0152] In this way, different swing modes can be selected according to the heights of different users, so as to achieve swinging at different heights, making the swing range more compatible with the user's height and improving the user experience and comfort.

[0153] In some embodiments, the first range is greater than or equal to 1.7 m. In the first swing mode, the swing angle range of the swing blade 14 is -50° to 0°. And / or, the second range is less than 1.7 m. In the second swing mode, the swing angle range of the swing blade 14 is -50° to -20°.

[0154] Specifically, when it is detected that the user's height is greater than or equal to 1.7 m, that is, the user's height is 1.7 m or above, the control component can control the swing blade 14 to switch to the first swing mode. The swing angle range of the swing blade 14 is -50° to 0°. At this time, the swing height range is between 1.3 m and 1.55 m.

[0155] When it is detected that the user's height is less than 1.7 m, that is, the user's height is below 1.7 m, the control component can control the swing blade 14 to switch to the second swing mode. The swing angle range of the swing blade 14 is -50° to -20°. At this time, the swing height range is between 1.3 m and 1.4 m.

[0156] Thus, the swing height can be adjusted more flexibly according to the different user heights, effectively avoiding direct blowing on the user's head.

[0157] According to one or more embodiments, when the present application is in use, first, the air outlet 112 is opened, and the air outlet component 12 is opened to smoothly generate an air flow in the air cavity 111. At the same time, the swing blade 14 rotates from the closed state to the swing state in the accommodation space, and at least a part of the swing blade 14 can extend out of the air outlet 112, so as to better adjust the swing angle and range.

[0158] Furthermore, the detection component can detect the actual height of the user. When it is detected that the user's height is above 1.7 m, the control component can control each blade to switch to the first swing mode. The swing angle range of each blade is -50° to 0°. At this time, the swing height range is between 1.3 m and 1.55 m.

[0159] When it is detected that the user's height is below 1.7 m, the control member can control each blade to switch to the second air-sweeping mode, and the air-sweeping angle range of each blade is -50° to -20°. At this time, the air-sweeping height range is between 1.3 m and 1.4 m.

[0160] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0161] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A fan module, characterized in that: Applied to a range hood (100), the fan module (10) comprises: An air outlet body (11) has an air cavity (111) inside, and an air outlet (112) is provided on the air outlet body (11) in a horizontal direction and is connected to the air cavity (111); An air outlet member (12) is disposed in the air cavity (111) and is used to deliver airflow to the air outlet (112); a wind sweeping blade (14) rotatably disposed in the wind cavity (111) and adjacent to the air outlet (112), the wind sweeping blade (14) having an arc-shaped wind sweeping surface facing the interior of the wind cavity (111); and The air guide (13) is arranged in the air cavity (111), and the bottom surface facing the air sweeping blade (14) is arranged as an inclined surface avoiding the air sweeping path of the air sweeping blade (14).

2. The fan module according to claim 1, characterized in that: The bottom surface of the air guide (13) facing the wind sweeping blade (14) is arranged to be inclined upward relative to the horizontal direction, and the air guide (13), the cavity wall of the air cavity (111) and the air outlet (112) jointly define a storage space for accommodating the wind sweeping blade (14).

3. The fan module according to claim 2, characterized in that: The wind sweeping blade (14) is rotatably arranged in the accommodating space and has a wind sweeping state in which it at least partially extends out of the air outlet (112), and the wind sweeping blade (14) includes at least two blades; In the wind sweeping state, the blades are arranged at intervals in the vertical direction, so as to form an air duct connecting the air cavity (111) and the air outlet (112) between every two adjacent blades.

4. The fan module according to claim 3, characterized in that: Each of the blades is an arc-shaped blade.

5. The fan module according to claim 3, characterized in that: The wind sweeping blades (14) also have a closed state in which they are stored in the accommodation space. When the wind sweeping blades (14) are in the closed state, each blade flips over to the inside of the air outlet body (11).

6. The fan module according to claim 3, characterized in that: The wind sweeping blade (14) comprises a first blade (141) and a second blade (142); when the first blade (141) and the second blade (142) are in the wind sweeping state, the first blade (141) is located above the second blade (142) in the vertical direction; Wherein, the length of the first blade (141) is greater than the length of the second blade (142).

7. The fan module according to claim 6, characterized in that: The first blade (141) is an arc-shaped blade, and the arc radius of the first blade (141) is R1, and the arc angle of the first blade (141) is θ1, wherein 50mm≤R1≤55mm; and / or 40°≤θ1≤45°.

8. The fan module according to claim 6 or 7, characterized in that: The second blade (142) is an arc-shaped blade, and the arc radius of the second blade (142) is R2, and the arc angle of the second blade (142) is θ2, wherein 30mm≤R2≤40mm; and / or 30°≤θ2≤35°.

9. The fan module according to claim 3, characterized in that: The wind sweeping state includes a first wind sweeping mode and a second wind sweeping mode. In the first wind sweeping mode, the wind sweeping angle range of each blade is -50° to 0°; in the second wind sweeping mode, the wind sweeping angle range of each blade is -50° to -20°.

10. The fan module according to claim 9, characterized in that: The fan module also includes a control component and a detection component that are communicatively connected. The detection component is used to detect the user's height. The control component is communicatively connected to each of the blades and is used to control each of the blades to switch between the first wind sweeping mode and the second wind sweeping mode based on the detection result of the detection component.

11. The fan module according to claim 1, characterized in that: In the horizontal direction, the distance between the rotation center of the wind sweeping blade (14) and the air outlet (112) ranges from 10 mm to 20 mm; And / or, in the vertical direction, the distance between the rotation center of the wind sweeping blade (14) and the bottom side of the cavity wall of the wind cavity (111) ranges from 30 mm to 40 mm.

12. The fan module according to claim 1, characterized in that: The fan module further comprises a baffle (15), which is movably arranged on the air outlet body (11) and is used to open or close the air outlet (112).

13. A range hood, characterized in that: It comprises a range hood body (20) and a fan module (10) according to any one of claims 1 to 12, wherein a smoke collecting chamber (30) is provided on the range hood body (20), and the fan module (10) is arranged on the range hood body (20).

14. A method for controlling a range hood, characterized in that: For controlling the range hood according to claim 13, the control method comprises the following steps: Opening the air outlet member (12) to form an air flow in the air cavity (111) and blowing the air out from the air outlet (112); The air sweeping blade (14) is controlled to rotate according to the height of the user, so as to change the blowing direction of the airflow from the air outlet (112).

15. The control method according to claim 14, characterized in that: Before the step of opening the air outlet member (12), forming an airflow in the air cavity (111), and blowing the air out from the air outlet (112), the method further comprises the following steps: The air outlet (112) is opened, and the wind sweeping blade (14) is controlled to rotate from a closed state to a wind sweeping state.

16. The control method according to claim 14, characterized in that: The step of controlling the rotation of the sweeping blade (14) according to the height of the user to change the blowing direction of the airflow from the air outlet (112) specifically includes the following steps: Detect and determine the user's height; When the height of the user is within a first range, controlling the wind sweeping blade (14) to rotate to a first wind sweeping mode; When the user's height is within the second range, the wind sweeping blade (14) is controlled to rotate to a second wind sweeping mode.

17. The control method according to claim 16, characterized in that: The first range is greater than or equal to 1.7 m, and in the first wind sweeping mode, the wind sweeping angle range of the wind sweeping blade (14) is -50° to 0°; and / or, the second range is less than 1.7 m, and in the second wind sweeping mode, the wind sweeping angle range of the wind sweeping blade (14) is -50° to -20°.

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