Air guide structure and thin range hood

Abstract

The utility model discloses an air guide structure and a thin range hood, the air guide structure is applied to the thin range hood, and the air guide structure comprises an air outlet frame, an air guide piece and a positioning structure; the air outlet frame is provided with an indoor air outlet; the air guide piece is rotationally connected with the air outlet frame, is arranged at the indoor air outlet and is used for changing the direction of airflow blown out of the indoor air outlet; the positioning structure is connected between the air outlet frame and the air guide part and used for positioning the air guide part at the adjusted angle in the rotating adjustment process of the air guide part relative to the air outlet frame, the air outlet direction of the thin range hood can be changed by adjusting the air guide part, and the use requirements of different crowds are met.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an air guide structure and a thin range hood. Background Art

[0002] In the related art, thin range hoods are generally provided with a return air vent and an indoor air outlet. The return air vent sucks in the fumes and filters them, and then blows them out from the indoor air outlet. However, the indoor air outlet tends to blow directly toward the user, and the direction of the airflow cannot be adjusted, making it difficult to meet the usage needs of different groups of people. Utility Model Content

[0003] The embodiments of the present application provide an air guide structure and a thin range hood, which can adjust the air guide member to change the air outlet direction of the thin range hood to meet the usage needs of different groups of people.

[0004] In the first aspect, an embodiment of the present application provides an air guide structure, including an air outlet frame, an air guide member and a positioning structure; the air outlet frame is provided with an indoor air outlet; the air guide member is rotatably connected to the air outlet frame and is arranged at the indoor air outlet to change the direction of airflow blown out from the indoor air outlet; the positioning structure is connected between the air outlet frame and the air guide member, and is used to position the air guide member at an adjusted angle during the rotation adjustment process of the air guide member relative to the air outlet frame.

[0005] In a possible implementation, the positioning structure is a damping structure, and the damping structure is sandwiched between the air outlet frame and the air guide member to provide a damping force during the rotation adjustment process of the air guide member relative to the air outlet frame.

[0006] In a possible implementation, the damping structure is formed as a damping ring, one of the air guide member and the air outlet frame is provided with an axial hole, and the other of the two is provided with a rotating shaft, and the rotating shaft is rotatably inserted into the axial hole;

[0007] The damping ring is sleeved outside the rotating shaft, and the two end surfaces of the damping ring along the axial direction are respectively in contact with the air guide member and the air outlet frame.

[0008] In a possible implementation, the air guide member includes an air guide plate and the rotating shaft, the rotating shaft is connected to an end of the air guide plate, the air outlet frame is provided with the shaft hole, and the rotating shaft is rotatably inserted into the shaft hole;

[0009] The rotating shaft at least at one end of the air guide plate includes a shaft body and a limiting portion connected to one end of the shaft body, the shaft body is rotatably inserted into the shaft hole, and the damping ring is clamped between the limiting portion and the air outlet frame.

[0010] In a possible implementation, the limiting portion is connected to one end of the shaft body and is located outside the air outlet frame, and the damping ring is clamped between the inner side surface of the limiting portion and the outer side surface of the air outlet frame.

[0011] In a possible implementation, a distance between an inner side surface of the limiting portion and an outer side surface of the air outlet frame is defined as h;

[0012] The axial dimension of the damping ring is h+0.1mm to h+0.2mm.

[0013] In one possible implementation, the rotating shaft is provided with a first fixing hole, the first fixing hole passes through the shaft body and the limiting portion, the air guide plate is provided with a second fixing hole, and a fastener is passed through the first fixing hole and the second fixing hole to relatively fix the rotating shaft and the air guide plate.

[0014] In a possible implementation, the damping structure is formed as a damping ring, one of the air guide member and the air outlet frame is provided with an axial hole, and the other of the two is provided with a rotating shaft, and the rotating shaft is rotatably inserted into the axial hole;

[0015] The damping ring is sleeved on the outside of the rotating shaft and embedded in the shaft hole. The inner peripheral wall of the damping ring abuts against the outer peripheral wall of the rotating shaft, and the outer peripheral wall of the damping ring abuts against the hole wall of the shaft hole.

[0016] In a possible implementation, a limiting member is provided on the air outlet frame, the limiting member is located at the indoor air outlet, and is used to limit the minimum swing angle of the air guide member relative to the air outlet frame.

[0017] In a possible implementation, the air outlet frame is provided with a plurality of indoor air outlets arranged at intervals, the number of the air guide members is adapted to the number of the indoor air outlets, one air guide member is correspondingly arranged at one indoor air outlet, and each is connected to the air outlet frame through the positioning structure.

[0018] In the second aspect, an embodiment of the present application provides a thin range hood, comprising a shell assembly, the above-mentioned air guide structure, a filter assembly and a fan assembly; the shell assembly is formed with a return air port and a mounting port; the air guide structure is installed at the mounting port; the filter assembly is installed at the shell assembly and is located at the return air port; the fan assembly is arranged in the shell assembly, for driving the air flow to be sucked in through the return air port and delivered from the indoor air outlet.

[0019] In a possible implementation, the air outlet frame is detachably connected to the shell assembly.

[0020] In a possible implementation, a plurality of spring-lock structures are provided on the outer side surface of the air outlet frame, and the spring-lock structures abut against the inner wall surface of the installation opening.

[0021] In a possible implementation, the return air port is disposed on a bottom surface of the shell assembly, and the mounting port is disposed on a front surface of the shell assembly.

[0022] In one possible implementation, the shell assembly includes an outer shell and an air guide cover, the fan assembly includes a plurality of fans arranged side by side in the outer shell, and the air guide cover is connected between the plurality of fans and the air outlet frame to connect the exhaust outlets of the plurality of fans with the indoor air outlet.

[0023] Based on the air guide structure and thin range hood of the embodiment of the present application, the air guide is rotatably connected to the air outlet frame and is arranged at the indoor air outlet. By rotating the swing angle of the air guide and the air outlet frame, the direction of the air flow blown out from the indoor air outlet is changed. The positioning structure is connected between the air outlet frame and the air guide, and is used to position the air guide at the adjusted angle during the rotation adjustment process of the air guide relative to the air outlet frame. The present application changes the air outlet direction of the thin range hood by adjusting the air guide, and guides the airflow to a suitable position. The user can flexibly adjust the air guide to change the air outlet direction according to their own needs and environmental conditions, such as weather, indoor temperature and personal preferences. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a thin range hood provided in an embodiment of the present application;

[0026] Figure 2 An exploded schematic diagram of a thin range hood provided in an embodiment of the present application;

[0027] Figure 3 A schematic structural diagram of an air guide structure provided in an embodiment of the present application;

[0028] Figure 4 An exploded schematic diagram of an air guide structure provided in an embodiment of the present application;

[0029] Figure 5 A cross-sectional schematic diagram of an air guide structure provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of an air outlet frame provided in an embodiment of the present application.

[0031] Description of Figure Numbers:

[0032] 1. Thin range hood; 10. Shell assembly; 10A. Accommodating cavity; 10B. Air return port; 10C. Mounting port; 110. Shell; 111. Top plate; 112. Bottom plate; 113. Side plate; 120. Air guide cover; 12A. Air guide channel; 121. Bottom shell; 122. Side shell; 20. Air guide structure; 210. Air outlet frame; 211. Indoor air outlet; 212. Axis hole; 213. Spring buckle structure; 220. Air guide piece; 2 21. air guide plate; 2211. second fixing hole; 222. rotating shaft; 2221. shaft body; 2222. limiting part; 2223. first fixing hole; 230. damping ring; 240. limiting member; 30. filter assembly; 40. fan assembly; 40A. air inlet; 40B. air outlet; 41. volute; 42. fan; 50. electric control box; 60. decorative cover; 60A. avoidance; X, length direction; Y, thickness direction.

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0035] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present utility model. Instead, they are only examples of devices and methods consistent with some aspects of the present utility model as detailed in the attached claims.

[0036] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previously associated objects are in an "or" relationship.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] The embodiment of the present application provides an air guide structure 20 and a thin range hood 1. Figure 1 and Figure 2 The thin range hood 1 includes a shell assembly 10, an air guide structure 20, a filter assembly 30 and a fan assembly 40. The shell assembly 10 includes a shell 110 and an air guide cover 120. The shell 110 includes a top plate 111 and a bottom plate 112 that are relatively arranged along the thickness direction Y of the shell 110, and a side plate 113 that is connected to the top plate 111 and the bottom plate 112. The top plate 111, the bottom plate 112 and the side plate 113 jointly enclose a accommodating cavity 10A. The shell 110 also has a return air port 10B and an installation port 10C that are both connected to the accommodating cavity 10A. It can be understood that in order to facilitate the return air port 10B to absorb oil smoke in the air, the return air port 10B can be arranged on the bottom surface of the shell 110, that is, the return air port 10B is arranged on the bottom plate 112.

[0039] The material of the shell 110 can be but is not limited to plastic or metal. Specifically, the material of the shell 110 can be metal, so that the shell 110 can have a higher structural strength, thereby reducing the probability of damage to the shell 110, so as to protect other components arranged in the shell 110, thereby allowing the thin range hood 1 to have a longer service life.

[0040] The filter assembly 30 is installed on the housing assembly 10 and located at the return air port 10B. The filter assembly 30 can filter the fluid entering the thin range hood 1 through the return air port 10B, so as to filter the air in the kitchen environment, thereby realizing the internal circulation of the air in the kitchen environment.

[0041] Further, the filter assembly 30 may include an inner support frame (not shown in the figure), an outer support frame (not shown in the figure) and a filter element (not marked in the figure), the inner support frame is detachably connected to the bottom plate 112 and / or the side plate 113; the outer support frame is detachably connected to the inner support frame; the filter element is sandwiched between the inner support frame and the outer support frame, which can facilitate the removal of the filter assembly 30 from the bottom plate 112 and / or the side plate 113, and then remove the outer support frame and the inner support frame, so that the filter element can be taken out to replace or clean the filter element, so that the replaced new filter element or the cleaned filter element can continue to filter the fluid entering the thin range hood 1 through the return air port 10B, so as to filter the air in the kitchen environment, thereby realizing the internal circulation of the air in the kitchen environment. Exemplarily, the detachable connection method between the inner support frame and the bottom plate 112 and / or the side plate 113 includes but is not limited to screw connection or clamping, and the detachable connection method between the outer support frame and the inner support frame includes but is not limited to screw connection or clamping.

[0042] It is understandable that the filter element can be activated carbon, or other oil and water absorbing materials, so that it can adsorb at least one of the oil smoke, water vapor and odor mixed in the air flow, so that the kitchen environment air can be purified through internal circulation and the user's quality of life can be improved.

[0043] The fan assembly 40 is disposed in the accommodating chamber 10A. The fan assembly 40 includes a volute 41 and a fan 42 disposed in the volute 41. The volute 41 has an air inlet 40A connected to the return air port 10B and an air outlet 40B connected to the mounting port 10C, so as to form a negative pressure at the return air port 10B, so as to suck the gas from the return air port 10B into the volute 41, and discharge it from the air outlet 40B. The thickness direction Y of the volute 41 is parallel to the thickness direction Y of the housing 110, so as to reduce the thickness of the thin range hood 1, so that the thickness of the thin range hood 1 is thinner, thereby facilitating the installation and transportation of the thin range hood 1.

[0044] Furthermore, multiple fans 42 may be provided, and the number of volutes 41 corresponds to the number of fans 42. By providing multiple fans 42 in the accommodating chamber 10A, the suction capacity of the thin range hood 1 can be improved compared to one fan 42, thereby improving the smoke extraction effect of the thin range hood 1. Exemplarily, at least two fans 42 are arranged along the length direction X of the housing 110, or the arrangement direction of at least two fans 42 has a component parallel to the length direction X of the housing 110. In the embodiment of the present application, the arrangement of the multiple fans 42 is not limited.

[0045] It should be noted that there can be many ways to arrange the multiple fans 42. For example, along the length direction X of the outer shell 110, the multiple fans 42 can be arranged in a straight line; of course, along the length direction X of the outer shell 110, the multiple fans 42 can also be arranged in an arc shape; in the embodiment of the present application, there is no specific limitation on the arrangement of the multiple fans 42.

[0046] Please refer to Figure 1 and Figure 2 In a specific embodiment, the return air port 10B is disposed on the bottom surface of the housing assembly 10, and the mounting port 10C is disposed on the front surface of the housing assembly 10. Here, the front surface refers to the surface of the housing assembly 10 in the thin range hood 1 that faces the user when the user stands in front of the thin range hood 1, which is more in line with the user's usage. Exemplarily, the return air port 10B can be opened on the bottom plate 112, and the mounting port 10C can be opened on the side plate 113. In other embodiments, the return air port 10B can also be disposed on the back surface of the housing assembly 10, and the return air port 10B can be formed by the bottom plate 112 and the side plate 113. The air inlets 40A of the multiple fans 42 are arranged toward the return air outlet 10B, which can form a negative pressure at the return air outlet 10B, so as to suck the oil smoke into the thin range hood 1 through the return air outlet 10B, and the air outlet directions of the air outlets 40B of the multiple fans 42 are all directed to the installation port 10C, which can reduce the probability of the air outlet of the fan 42 colliding with the top plate 111 and / or the bottom plate 112 and / or the side plate 113, thereby reducing the probability of collision noise, and further reducing the noise of the thin range hood 1.

[0047] It is further explained that the air outlet of the thin range hood 1 in the related art cannot adjust the direction of the airflow, and the airflow blown out of the air outlet is generally blown directly to the user. For different users, when the weather temperature is high, some users may feel that the airflow blown out of the air outlet can bring a hint of coolness, helping them to reduce their body temperature and feel more comfortable. However, for other users, this airflow blowing directly at them may make them feel uncomfortable. When the weather temperature is low, some users may feel that the airflow blown out of the indoor air outlet 211 is too cold, making them feel uncomfortable, so they may hope that the airflow does not blow directly at them. Other users may like this stimulating feeling, and they may even deliberately adjust their position in order to better feel the blowing of the airflow. Therefore, the existing thin range hood 1 has certain limitations in the design of the air outlet, and it is impossible to adjust the direction of the airflow according to the actual needs of the user or environmental conditions.

[0048] Therefore, the inventive concept of the present application is that: an air guide structure 20 is installed at the mounting port 10C of the housing 110, and the air guide structure 20 is used to adjust the direction of the airflow. The air guide structure 20 includes an air outlet frame 210, an air guide member 220 and a positioning structure. The air outlet frame 210 is provided with an indoor air outlet 211. It can be understood that the indoor air outlet 211 is connected to the mounting port 10C, that is, the airflow driven by the fan assembly 40 will be sent out from the indoor air outlet 211. The air guide member 220 is rotatably connected to the air outlet frame 210 and is arranged at the indoor air outlet 211. By rotating the swing angle of the air guide member 220 and the air outlet frame 210, the direction of the airflow blown out from the indoor air outlet 211 is changed. Among them, the air guide member 220 can be in the form of a plate, and the flow direction of the airflow is adjusted by rotating the air guide member 220. The positioning structure is connected between the air outlet frame 210 and the air guide member 220 , and is used to position the air guide member 220 at an adjusted angle during the rotation adjustment process of the air guide member 220 relative to the air outlet frame 210 .

[0049] In summary, the present application changes the air outlet direction of the thin range hood 1 by adjusting the air guide 220, and guides the airflow to a suitable position. The user can flexibly adjust the air guide 220 to change the air outlet direction according to their own needs and environmental conditions, such as weather, indoor temperature and personal preferences.

[0050] In a specific embodiment, the rotational connection between the air guide member 220 and the air outlet frame 210 is located at a relatively lower position than the indoor air outlet 211. The advantage of such a setting is that the air guide member 220 can provide an upward flow guiding surface for the airflow during the rotation process with the air outlet frame 210, thereby effectively preventing the airflow from blowing directly toward the user.

[0051] In a specific embodiment, the air outlet frame 210 is detachably connected to the housing assembly 10, so that the installer can more conveniently install the air guide structure 20 and the housing assembly 10. When maintenance or cleaning is required, the user can also easily disassemble the air outlet frame 210.

[0052] Furthermore, in order to facilitate the detachable connection between the air outlet frame 210 and the housing assembly 10, a plurality of snap structures 213 are provided on the outer side of the air outlet frame 210, and the snap structures 213 abut against the inner wall surface of the mounting opening 10C. Specifically, the outer contour of the air outlet frame 210 can be designed to be compatible with the mounting opening 10C, and the air outlet frame 210 is inserted into the mounting opening 10C and abuts against the inner wall surface of the mounting opening 10C, and the snap structures 213 will produce a certain degree of deformation under the pressure of the inner wall surface, so that the air outlet frame 210 can be elastically snapped to the mounting opening 10C.

[0053] It should be noted that the above-mentioned air guide cover 120 is connected between the multiple fans 42 and the air outlet frame 210, and the air guide cover 120 has a guide channel 12A. The guide channel 12A connects the exhaust ports 40B of the multiple fans 42 with the indoor air outlet 211, and can guide the airflow discharged from the exhaust ports 40B to be discharged to the outside of the housing 110 through the indoor air outlet 211. Specifically, the air guide cover 120 also includes a bottom shell 121 arranged opposite to the top plate 111 along the thickness direction Y of the housing 110, and the bottom shell 121, the two side shells 122 and the top plate 111 of the housing 110 jointly enclose the guide channel 12A. It can be understood that the guide channel 12A can also be enclosed by the two side shells 122, the top plate 111 and the bottom plate 112, and can also guide the movement of the airflow to reduce the aerodynamic noise, thereby reducing the noise of the thin range hood 1. In the embodiment of the present application, the specific form of the air guide cover is not limited.

[0054] In a specific embodiment, the thin range hood 1 further includes a decorative cover plate 60, which is connected to the outer surface of the housing 110 having the mounting opening 10C, and has a relief opening 60A, which is arranged corresponding to the mounting opening 10C to facilitate the indoor air outlet 211 to discharge air, and the decorative cover plate 60 can be an operation panel. The material of the decorative cover plate 60 can be glass or plastic, and the connection method of the decorative cover plate 60 and the housing 110 includes but is not limited to screw connection, clamping connection or adhesive connection. In the embodiment of the present application, there is no restriction on the material of the decorative cover plate 60 and the connection method of the decorative cover plate 60 and the housing 110.

[0055] Please refer to Figure 2 In a specific embodiment, the thin range hood 1 further includes an electric control box 50, which is disposed in the accommodating cavity 10A and is disposed on one side of all fans 42 along the length direction X of the outer shell 110, and is electrically connected to each fan 42 for controlling the operation of the fan 42.

[0056] There are many forms of positioning structures for fixing the rotated air guide member 220 and the air outlet frame 210 relatively. The following content introduces the positioning structure.

[0057] The positioning structure may be a damping structure, which is sandwiched between the air outlet frame 210 and the air guide 220 to provide a damping force during the rotation adjustment process of the air guide 220 relative to the air outlet frame 210. It can be understood that the angle of rotation of the air guide 220 relative to the air outlet frame 210 can be adjusted steplessly by the damping structure, and the user can position the air guide 220 at any angle during use.

[0058] In other embodiments, the positioning structure may include multiple positioning grooves and positioning blocks, wherein the multiple positioning grooves are formed in one of the air outlet frame 210 and the air guide 220, and the positioning block forms the other of the air outlet frame 210 and the air guide 220. When the air guide 220 rotates relative to the air outlet frame 210, the positioning block is inserted into the corresponding positioning groove, and the rotated air guide 220 can be fixed relative to the air outlet frame 210. Here, the present application does not limit the specific form of the positioning structure.

[0059] See also Figures 3 to 6 In a specific embodiment, the damping structure can be in the form of a damping ring 230, one of the air guide 220 and the air outlet frame 210 is provided with an axial hole 212, and the other of the two is provided with a rotating shaft 222, and the rotating shaft 222 is rotatably inserted into the axial hole 212; the damping ring 230 is sleeved outside the rotating shaft 222, and the two end surfaces of the damping ring 230 along its axial direction are respectively abutted against the air guide 220 and the air outlet frame 210. The damping ring 230 can be made of rubber, silicone, polyurethane and other materials. When the damping ring 230 is sandwiched between the limiting portion 2222 and the air outlet frame 210, the damping ring 230 will fill the small gap between the air guide 220 and the air outlet frame 210 to form a close contact surface, thereby increasing the friction force, and after the air guide 220 is rotated and adjusted, the damping ring 230 relatively fixes the air guide 220 and the air outlet frame 210. Of course, in other embodiments, the damping structure may also be in the form of a damping plate, and the material of the damping plate may be set with reference to the above-mentioned damping ring 230, but the present application is not limited thereto.

[0060] Exemplarily, the air guide member 220 includes an air guide plate 221 and a rotating shaft 222, the rotating shaft 222 is connected to the end of the air guide plate 221, the air outlet frame 210 is provided with an axial hole 212, and the rotating shaft 222 is rotatably inserted into the axial hole 212; the rotating shaft 222 located at least at one end of the air guide plate 221 includes a shaft body portion 2221 and a limiting portion 2222 connected to one end of the shaft body portion 2221, the shaft body portion 2221 is rotatably inserted into the axial hole 212, and the damping ring 230 is clamped between the limiting portion 2222 and the air outlet frame 210.

[0061] Please refer to Figure 5, the rotating shafts 222 on both sides of the air guide 220 can be arranged identically or differently. At least the rotating shaft 222 on one side of the air guide 220 includes a shaft body portion 2221 and a limiting portion 2222, so that the limiting portion 2222 and the air outlet frame 210 can clamp the damping ring 230, while the rotating shaft 222 on the other side of the air guide 220 can only include the shaft body portion 2221, that is, the rotating shaft 222 is inserted into the shaft hole 212 to realize the rotation of the air guide 220. Of course, the rotating shafts 222 on both sides of the air guide plate 221 are provided with limiting portions 2222, and both sides are provided with damping rings 230, which can further improve the stability of the relative fixation of the air guide 220 and the air outlet frame 210.

[0062] It is further explained that the rotating shafts 222 on both sides of the air guide plate 221 can be inserted into the inner wall of the air outlet frame 210 from the indoor air outlet 211; or the air guide plate 221 can be located at the indoor air outlet 211, the rotating shaft 222 is located outside the air outlet frame 210, and the rotating shaft 222 passes through the shaft hole 212 of the air outlet frame 210 and is fixedly connected to the air guide plate 221. Specifically, the air guide plate 221 can generally be injection molded by materials such as polypropylene (PP), polyethylene (PE), polystyrene (PS), and polycarbonate (PC), which have a certain deformation ability, and during the installation process, by bending the air guide plate 221, the rotating shafts 222 on the opposite sides of the air guide plate 221 can be inserted into the shaft hole 212 from the indoor air outlet 211, and after the force applied to the air guide plate 221 is cancelled, the air guide plate 221 returns to its original state, and the rotating shaft 222 is firmly stuck in the shaft hole 212.

[0063] The installation operation can be made simpler by locating the rotating shaft 222 on the outside of the air outlet frame 210, and then passing the rotating shaft 222 through the shaft hole 212 of the air outlet frame 210 and fixing it to the air guide plate 221. For example, the limiting portion 2222 is connected to one end of the shaft body 2221 and is located on the outside of the air outlet frame 210, and the damping ring 230 is sandwiched between the inner side surface of the limiting portion 2222 and the outer side surface of the air outlet frame 210. The rotating shaft 222 is provided with a first fixing hole 2223, which passes through the shaft body 2221 and the limiting portion 2222, and the air guide plate 221 is provided with a second fixing hole 2211, and fasteners are passed through the first fixing hole 2223 and the second fixing hole 2211 to fix the rotating shaft 222 and the air guide plate 221 relatively. With such a configuration, the installer does not need to bend the air guide plate 221 , and can simply fix the rotating shaft 222 to the air guide plate 221 by screws or bolts.

[0064] The distance between the inner side surface of the limiting portion 2222 and the outer side surface of the air outlet frame 210 is defined as h. The axial dimension of the damping ring 230 is h+0.1mm~h+0.2mm. In this embodiment, it can be understood that the degree of extrusion of the damping ring 230 is within this range. After determining the thickness of the damping ring 230, by changing the relative distance between the inner side surface of the limiting portion 2222 and the outer side surface of the air outlet frame 210, that is, h will be 0.1-0.2mm smaller than the thickness of the silicone pad. Within this range, the stability and smoothness of the rotation can be effectively guaranteed, so that the user has a better feel during the adjustment process, while ensuring that the damping ring 230 can relatively fix the air guide 220 and the air outlet frame 210. When the degree of compression of the damping ring 230 is greater than this range, that is, h is less than the thickness of the damping ring 230 and is less than 0.2 mm, the damping force applied by the damping ring 230 to the air guide member 220 and the air outlet frame 210 is relatively large, and the user needs to use greater force to turn the air guide member 220; when the degree of compression of the damping ring 230 is less than the above range, that is, h is less than the thickness of the damping ring 230 and is greater than 0.1 mm, the damping force applied by the damping ring 230 to the air guide member 220 and the air outlet frame 210 is relatively small, especially after being used for a period of time, the air guide member 220 and the air outlet frame 210 may not be relatively fixed.

[0065] In another embodiment, the damping ring 230 is sleeved outside the rotating shaft 222 and embedded in the shaft hole 212, and the inner peripheral wall of the damping ring 230 abuts against the outer peripheral wall of the rotating shaft 222, and the outer peripheral wall of the damping ring 230 abuts against the hole wall of the shaft hole 212. In this configuration, the damping ring 230 is squeezed by the outer peripheral wall of the rotating shaft 222 and the hole wall of the shaft hole 212, so that a small gap between the rotating shaft 222 and the hole wall of the shaft hole 212 forms a close contact surface, thereby increasing friction, and after the air guide 220 is rotated and adjusted, the damping ring 230 fixes the air guide 220 and the air outlet frame 210 relatively.

[0066] See also Figure 3 and Figure 6 In any of the above embodiments, a limiting member 240 is provided on the air outlet frame 210, the limiting member 240 is located at the indoor air outlet 211, and is used to limit the minimum angle of the air guide member 220 relative to the air outlet frame 210, wherein the limiting member 240 can be in a block-shaped form, and when in contact with the air guide member 220, the air guide member 220 is at the minimum angle position, and at this time, part of the edge of the air guide member 220 is exposed to the air outlet frame 210, so that it can be avoided that the air guide member 220 is completely embedded in the indoor air outlet 211 during the rotation process, and it is difficult to open again. In some other embodiments, the limiting member 240 may not be provided, and a handle may be provided on the outer side of the air guide member 220, and the rotation operation of the air guide member 220 is driven by the handle.

[0067] In a specific embodiment, the air outlet frame 210 is provided with a plurality of indoor air outlets 211 arranged at intervals, the number of air guides 220 is adapted to the number of indoor air outlets 211, and one air guide 220 is correspondingly arranged at one indoor air outlet 211, and each is connected to the air outlet frame 210 through a positioning structure. With such an arrangement, each indoor air outlet 211 can be independently controlled, so the air volume, wind speed and wind direction of the air supply can be adjusted according to the needs of different areas of the kitchen environment, thereby increasing the flexibility of the air supply. Of course, only one air guide 220 can be provided, and the present application is not limited thereto.

[0068] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air guide structure, applied to a thin range hood, characterized in that: include: An air outlet frame is provided with an indoor air outlet; An air guide member, rotatably connected to the air outlet frame and arranged at the indoor air outlet, for changing the direction of the airflow blown out from the indoor air outlet; as well as The positioning structure is connected between the air outlet frame and the air guide member, and is used to position the air guide member at an adjusted angle during the rotation adjustment process of the air guide member relative to the air outlet frame.

2. The wind guide structure according to claim 1, characterized in that: The positioning structure is a damping structure, and the damping structure is sandwiched between the air outlet frame and the air guide member to provide a damping force during the rotation adjustment process of the air guide member relative to the air outlet frame.

3. The wind guide structure according to claim 2, characterized in that: The damping structure is formed as a damping ring, one of the air guide member and the air outlet frame is provided with an axial hole, and the other of the two is provided with a rotating shaft, and the rotating shaft is rotatably inserted into the axial hole; The damping ring is sleeved outside the rotating shaft, and the two end surfaces of the damping ring along the axial direction are respectively in contact with the air guide member and the air outlet frame.

4. The wind guide structure according to claim 3, characterized in that: The air guide member includes an air guide plate and the rotating shaft, the rotating shaft is connected to the end of the air guide plate, the air outlet frame is provided with the shaft hole, and the rotating shaft is rotatably inserted into the shaft hole; The rotating shaft at least at one end of the air guide plate includes a shaft body and a limiting portion connected to one end of the shaft body, the shaft body is rotatably inserted into the shaft hole, and the damping ring is clamped between the limiting portion and the air outlet frame.

5. The wind guide structure according to claim 4, characterized in that: The limiting portion is connected to one end of the shaft body and is located outside the air outlet frame. The damping ring is sandwiched between the inner side surface of the limiting portion and the outer side surface of the air outlet frame.

6. The wind guide structure according to claim 5, characterized in that: Define the distance between the inner side surface of the limiting portion and the outer side surface of the air outlet frame as h; The axial dimension of the damping ring is h+0.1mm to h+0.2mm.

7. The wind guide structure according to claim 4, characterized in that: The rotating shaft is provided with a first fixing hole, which passes through the shaft body and the limiting portion, and the wind guide plate is provided with a second fixing hole. Fasteners are passed through the first fixing hole and the second fixing hole to relatively fix the rotating shaft and the wind guide plate.

8. The wind guide structure according to claim 2, characterized in that: The damping structure is formed as a damping ring, one of the air guide member and the air outlet frame is provided with an axial hole, and the other of the two is provided with a rotating shaft, and the rotating shaft is rotatably inserted into the axial hole; The damping ring is sleeved on the outside of the rotating shaft and embedded in the shaft hole. The inner peripheral wall of the damping ring abuts against the outer peripheral wall of the rotating shaft, and the outer peripheral wall of the damping ring abuts against the hole wall of the shaft hole.

9. The wind guide structure according to any one of claims 1 to 8, characterized in that: A limiting member is arranged on the air outlet frame, the limiting member is located at the indoor air outlet, and is used to limit the minimum swing angle of the air guide member relative to the air outlet frame.

10. The wind guide structure according to any one of claims 1 to 8, characterized in that: The air outlet frame is provided with a plurality of indoor air outlets arranged at intervals, the number of the air guides matches the number of the indoor air outlets, one air guide is correspondingly arranged at one indoor air outlet, and each is connected to the air outlet frame through the positioning structure.

11. A thin range hood, characterized in that: include: A housing assembly is formed with a return air port and a mounting port; The wind guide structure according to any one of claims 1 to 10, wherein the wind guide structure is installed at the installation opening; A filter assembly, mounted on the housing assembly and located at the return air outlet; as well as The fan assembly is arranged in the shell assembly and is used to drive the air flow to be sucked in through the return air port and sent out from the indoor air outlet.

12. The thin range hood according to claim 11, characterized in that: The air outlet frame is detachably connected to the shell assembly.

13. The thin range hood according to claim 12, characterized in that: The outer side surface of the air outlet frame is provided with a plurality of spring buckle structures, and the spring buckle structures abut against the inner wall surface of the installation opening.

14. The thin range hood according to claim 11, characterized in that: The return air port is arranged on the bottom surface of the shell assembly, and the installation port is arranged on the front surface of the shell assembly.

15. The thin range hood according to claim 11, characterized in that: The shell assembly includes an outer shell and an air guide cover, the fan assembly includes a plurality of fans arranged side by side in the outer shell, and the air guide cover is connected between the plurality of fans and the air outlet frame to connect the exhaust ports of the plurality of fans with the indoor air outlet.

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