Circulation fan

Abstract

An embodiment of the present invention discloses a circulation fan, comprising a base and a body, wherein the base is provided with a support assembly, and the support assembly is installed with a driving mechanism, the driving mechanism comprising a first rotating assembly with a first turning direction and a second rotating assembly with a second turning direction; the body comprises fan blades, a front shell, a rear shell and a fan motor for driving the fan blades to rotate, the front shell is joined with the rear shell and forms an accommodating space, the fan blades are arranged in the accommodating space, and the fan motor is installed on the second rotating assembly; wherein the fan blades comprise a fan blade fixing shaft arranged at the center of the fan blades and a blade assembly located outside the fan blade fixing shaft, the blade assembly comprises a first blade, a second blade and a third blade, the first blade and the second blade have the same twisting direction, and the third blade is connected between the middle parts of the first blade and the second blade.

Description

Technical Field

[0001] The invention relates to the field of household appliances, and in particular to a circulation fan. Background Art

[0002] Compared with traditional electric fans, circulating fans can blow wind in a spiral shape along a certain direction. As the fan blades stir, a spiral columnar wind can be formed.

[0003] Generally speaking, the wind blown out by a circulating fan has a longer distance and better directionality. Such wind has a larger contact area with the surrounding air, which disperses the surrounding air, drives more air to participate in the indoor air circulation, accelerates the indoor air circulation, and thus balances the indoor temperature.

[0004] At present, the air outlet conditions of existing circulation fans are basically adjusted by changing the speed of the motor, but this will lead to greater noise and manufacturing costs. Summary of the invention

[0005] The present invention provides a circulation fan, which can optimize the air output of the circulation fan by designing a first blade, so that the circulation fan has not only a large air volume but also low noise without increasing the power of a motor.

[0006] The present invention provides a circulation fan, comprising:

[0007] A base, provided with a support assembly, on which a driving mechanism is mounted, wherein the driving mechanism comprises a first rotating assembly having a first turning direction and a second rotating assembly having a second turning direction;

[0008] A body, comprising a fan blade, a front shell, a rear shell and a fan motor for driving the fan blade to rotate, wherein the front shell is joined with the rear shell to form an accommodating space, the fan blade is arranged in the accommodating space, and the fan motor is installed on the second rotating assembly;

[0009] Wherein, the fan blade includes a fan blade fixing shaft arranged at the center of the fan blade and a blade assembly located outside the fan blade fixing shaft, the blade assembly includes a first blade, a second blade and a third blade, the first blade and the second blade have the same twisting direction, and the third blade is connected between the middle parts of the first blade and the second blade.

[0010] In the circulation fan of the present invention, the number of the blade assemblies is at least three groups, and the three groups of blade assemblies are evenly arranged on the outside of the blade fixing shaft with the blade fixing shaft as the center.

[0011] In the circulating fan of the present invention, the first blade includes a first section and a second section, the first section is connected to the fan blade fixing shaft, the second section is connected to the first section, and the third blade is arranged between the first section and the second section.

[0012] In the circulating fan of the present invention, the width of the first section is different from the width of the second section and the width of the second blade.

[0013] In the circulating fan of the present invention, the first section is inclined with the fan blade fixing axis and forms a first angle, the second blade is inclined with the fan blade fixing axis and forms a second angle, and the first angle is different from the second angle.

[0014] In the circulating fan of the present invention, the second section and the third blade are arranged obliquely and form a third angle, and the third angle is different from the first angle and the second angle.

[0015] In the circulating fan of the present invention, the third blade is arranged concentrically with the fan blade fixing shaft.

[0016] In the circulation fan of the present invention, the third blade is in a triangular structure, the first blade is connected to one side of the third blade, and the second blade is connected to the other side of the third blade.

[0017] In the circulation fan of the present invention, a sensor for sensing the presence of a person and an MCU control chip arranged on a circuit board are provided on the circulation fan. The sensor is electrically connected to the MCU control chip for controlling the direction of the driving mechanism and the power supply of the fan motor.

[0018] In the circulation fan of the present invention, a display screen is installed on the body, and the display screen is electrically connected to the MCU control chip.

[0019] The technical solution provided by the embodiment of the present application may include the following beneficial effects: the present application designs a circulation fan, since the blade assembly includes a first blade, a second blade and a third blade, wherein the first blade and the second blade have the same twisting direction, and the third blade is connected between the middle parts of the first blade and the second blade, this not only allows the circulation fan to have a large air volume but also low noise without increasing the motor power.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of a circulation fan in the present invention;

[0023] Figure 2 yes Figure 1 A cross-sectional schematic diagram of the circulation fan in FIG.

[0024] Figure 3 yes Figure 1 Schematic diagram of the circulation fan in FIG.

[0025] Figure 4 yes Figure 1 A cross-sectional schematic diagram of a suction cup assembly;

[0026] Figure 5 yes Figure 1 A schematic diagram of the structure of the suction cup assembly;

[0027] Figure 6 yes Figure 1 A partial structural diagram of the circulation fan in FIG.

[0028] Figure 7 yes Figure 1 A partially exploded schematic diagram of the circulation fan in FIG.

[0029] Figure 8 yes Figure 1 A partially exploded schematic diagram of the circulation fan in FIG.

[0030] Fig. 9 yes Figure 1 A partially exploded schematic diagram of the circulation fan in FIG.

[0031] Fig.10 yes Figure 1 An exploded schematic diagram of the driving mechanism in FIG.

[0032] Fig.11 yes Figure 1 An exploded schematic diagram of the first rotating assembly in FIG.

[0033] Fig.12 yes Figure 1 An exploded schematic diagram of the first transmission member in FIG.

[0034] Fig.13 yes Figure 1 An exploded schematic diagram of the second rotating assembly in FIG.

[0035] Fig.14 yes Figure 1 A partially exploded view of the second rotating assembly in FIG.

[0036] Fig.15 yes Figure 1 An exploded schematic diagram of the second transmission member in FIG.

[0037] Fig.16 yes Figure 1 A schematic diagram of the structure of the second fixing frame in FIG.

[0038] Fig.17 yes Figure 1 Schematic diagram of the exploded body of the machine;

[0039] Fig.18 yes Figure 1 An exploded diagram of the rear shell in FIG.

[0040] Fig.19 yes Figure 1 A schematic diagram of the structure of the rear shell;

[0041] Fig. 20 yes Figure 1 Schematic diagram of the structure of the fan blade;

[0042] Fig.21 yes Figure 1 Schematic diagram of the structure of the fan blade;

[0043] Fig. 22 yes Figure 1 An exploded schematic diagram of the front shell in FIG.

[0044] Fig.23 yes Figure 1 A schematic diagram of the structure of the front grille;

[0045] Fig.24 yes Figure 1 An exploded schematic diagram of the base in FIG.

[0046] Fig.25 yes Figure 1 Schematic diagram of the structure of the storage shell. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships described in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0049] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0050] like Figures 1 to 25 As shown, a circulation fan provided by the present application includes a body 10 and a base 20, wherein a support assembly 30 is provided on the base 20, and the body 10 is mounted on one end of the support assembly 30 away from the base 20. In this embodiment, the body 10 includes a fan blade 11, a front shell 12, a rear shell 13, and a fan motor 14 for driving the fan blade 11 to rotate. The front shell 12 and the rear shell 13 are joined to form an accommodating space. The fan blade 11 is arranged in the accommodating space, which can not only protect the fan blade 11 to prevent the fan blade 11 from causing harm to the user when the fan blade 11 rotates, but also ensure that the fan motor 14 can drive the fan blade 11 to rotate and send air to the room or people, so as to achieve the effect of dispelling hot air or lowering the room temperature.

[0051] In an optional embodiment, a fixing structure is provided at one end of the base 20 facing away from the support assembly 30, and the fixing structure includes a suction cup assembly for fixing the circulation fan on the placement surface. The placement surface can be a flat and smooth surface of an object such as a tile on the ground, and the suction cup assembly can be made of a plastic material with certain rigidity and certain flexibility such as silicone rubber, PVC material, nitrile rubber, polyurethane or a vinyl-containing polymer. After adopting the above technical solution, the base 20 of the circulation fan can be fixed on the placement surface through the suction cup assembly.

[0052] Specifically, the suction cup assembly includes a suction cup 21 with a hollow conical cavity and an exhaust valve 22 arranged on the suction cup. After the suction cup 21 is against the placement surface, the suction cup 21 is pressed toward the base 20 through the support assembly 30, so that the air in the hollow conical cavity of the suction cup 21 is discharged through the exhaust valve 22; releasing the support assembly 30 allows the suction cup 21 to automatically reset. During the process of self-resetting, the suction cup 21 generates negative pressure in the hollow conical cavity of the suction cup 21, so that the suction cup 21 can be adsorbed on the placement surface, ensuring that the circulation fan can be firmly placed on the placement surface.

[0053] It should be noted that the suction cup 21 can also be pressed onto the placement surface by the gravity of the circulation fan itself, and the gas in the hollow conical cavity can also be extracted through the exhaust valve 22 in other ways, so that a negative pressure is generated in the hollow conical cavity of the suction cup 21 during the process of the suction cup 21 self-resetting, thereby ensuring that the circulation fan can be firmly placed on the placement surface; at the same time, the placement surface can also include a rough surface of an object, which is not limited in this application.

[0054] In an optional embodiment, a suction cup air cavity 211 and a suction cup flow channel 212 connected to the suction cup air cavity are provided on the suction cup 21, wherein an exhaust valve 22 is provided on the suction cup flow channel 212, so that the gas in the hollow conical cavity of the suction cup 21 can pass through the suction cup air cavity 211 and then be discharged to the outside of the suction cup 21 through the suction cup flow channel 212, and the exhaust valve 22 is used to discharge the gas in the suction cup flow channel 212 while preventing external gas from entering the suction cup flow channel 212.

[0055] Specifically, the base 20 is provided with a base cavity 23 and an exhaust hole 231, the suction cup 21 is installed on the base cavity 23, and the suction cup flow channel 212 is connected to the exhaust hole 231. In this embodiment, the suction cup 21 and the base cavity 23 are both rectangular structures, and the exhaust hole 231 is set on the side wall of the base cavity 23. After the suction cup 21 is installed in the base cavity 23, the suction cup flow channel 212 can be fixed on the exhaust hole 231, and the suction cup flow channel 212 can also pass through the exhaust hole 231 and be flush with the outer side of the exhaust hole 231, etc.

[0056] In an optional embodiment, the exhaust valve 22 may include an elastic member (not shown in the figure) and a baffle (not shown in the figure), and the elastic member is used to abut the baffle against the side of the suction cup flow channel 212 facing the suction cup air cavity 211.

[0057] Specifically, an exhaust valve mounting portion (not shown in the figure) is provided on the suction cup flow channel 212, and the diameter of the exhaust valve mounting portion is larger than the diameter of the suction cup flow channel 212, wherein the exhaust valve mounting portion is tapered on the side facing the suction cup air cavity 211, the baffle may be a steel ball or the like, and the elastic member may be a spring or the like; the spring is used to abut the baffle against the tapered portion of the exhaust valve mounting portion, so that the baffle on the exhaust valve mounting portion can be pushed open when the suction cup air cavity 211 is exhausted, thereby allowing the gas to be discharged through the suction cup flow channel 212, and after the gas in the suction cup air cavity 211 is exhausted, the baffle is reset under the elastic force of the elastic member, isolating the suction cup flow channel 212 from the outside.

[0058] In an optional embodiment, the exhaust valve 22 may include a valve body (not shown in the figure) and a valve (not shown in the figure) installed on the valve body, wherein the valve is provided with a fan member (not shown in the figure) that can be opened in one direction so that the gas in the suction cup air cavity 211 can be discharged through the valve.

[0059] Specifically, the number of fan members can be one or two. When the gas in the suction cup air cavity 211 is discharged through the suction cup flow channel 212, the fan member automatically opens, and after the gas in the suction cup flow channel 212 is exhausted, the fan member automatically closes. The closing of the fan member is achieved by the elastic force of the elastic member, and the opening of the fan member can be achieved by the pressure of the gas, and can also be achieved by other driving mechanisms, which is not limited in the present application.

[0060] In an optional embodiment, the exhaust valve 22 may include a rubber plug arranged on the suction cup flow channel 212, and the rubber plug is used to isolate the suction cup air cavity 211 from the external air circulation. When the gas in the suction cup air cavity 211 is discharged through the suction cup flow channel 212, the rubber plug is opened to connect the suction cup flow channel 212 with the outside; after the gas in the suction cup flow channel 212 is exhausted, the rubber plug is installed on the suction cup flow channel 212 to prevent external air from entering the suction cup air cavity 211.

[0061] In an optional embodiment, the suction cup 21 includes a suction cup body and a soft rubber ring (not shown in the figure) arranged on the suction cup body, wherein a connecting column (not shown in the figure) protruding outward is provided at the center of the side of the suction cup body facing away from the soft rubber ring, and the connecting column is connected to the base 20.

[0062] Specifically, a circle of soft rubber grooves (not shown in the figure) are provided around the suction cup body, and the soft rubber ring is bonded in the soft rubber groove by glue or other means, so that the soft rubber ring can fill the soft rubber groove and partially extend out of the soft rubber groove. When the suction cup body is pressed onto the surface of an object, especially a rough surface of an object, the soft rubber ring can be deformed, so that the suction cup is tightly attached to the surface of the object, thereby avoiding air residue between the suction cup and the surface of the object and affecting the vacuum degree of the suction cup.

[0063] In an optional embodiment, a circle of inner deformation grooves recessed into the suction cup body is provided along the inner edge of the soft rubber ring, so that a boss is formed on the suction cup body toward the connecting column, ensuring that the suction cup body has a stronger deformation ability.

[0064] In an optional embodiment, a driving mechanism 40 is installed on the support assembly 30, and the body 10 is installed on the support assembly 30 through the driving mechanism 40, wherein the driving mechanism 40 includes a first rotating assembly 41 and a second rotating assembly 42 rotatably installed on the first rotating assembly 41. In this embodiment, the first rotating assembly 41 has a first turning direction, and the second rotating assembly 42 has a second turning direction, and the first turning direction and the second turning direction are perpendicular to each other, so as to meet the air supply angle requirements of the circulation fan for the user.

[0065] Among them, if the first turning direction is the lateral rotation direction of the circulation fan, the second turning direction is the longitudinal rotation direction of the circulation fan; if the first turning direction is the longitudinal rotation direction of the circulation fan, the second turning direction is the lateral rotation direction of the circulation fan, and this application does not impose any restrictions.

[0066] Specifically, the first rotating assembly 41 includes a first movable frame 411 and a first fixed frame 412, and the first fixed frame 412 is rotatably connected to the first movable frame 411; the second rotating assembly 42 includes a second fixed frame 421 and a second movable frame 422, and the second fixed frame 421 is rotatably connected to the second movable frame 422. In this embodiment, the fan motor 14 is mounted on the second fixed frame 421, the second fixed frame 421 is rotatably mounted on the first movable frame 411, the second movable frame 422 is rotatably mounted on the first fixed frame 412, and the first fixed frame 412 is fixed to the support assembly 30. After adopting the above technical scheme, when the circulation fan is working, the up and down angles of the body 10 can be adjusted through the relative relationship between the second fixed frame 421 and the second movable frame 422 and the first movable frame 411 and the first fixed frame 412; the left and right angles of the body 10 can be adjusted through the relative relationship between the second fixed frame 421 and the first movable frame 411 and the second movable frame 422 and the first fixed frame 412, so that the air supply angle of the circulation fan can be adjusted at multiple angles, with reasonable structure and strong functions.

[0067] In an optional embodiment, the first movable frame 411 and the first fixed frame 412 are both L-shaped structures, wherein the horizontal end of the first movable frame 411 is rotatably connected to the horizontal end of the first fixed frame 412 to form a U-shape, and the second fixed frame 421 can be rotatably installed on the vertical end of the first movable frame 411, and the second movable frame 422 can be rotatably installed on the vertical ends of the first fixed frame 412. Not only is the structural design reasonable, but it also makes the overall circulation fan more compact. Through the different rotation directions of the first rotating component 41 and the second rotating component 42, the air supply angle of the circulation fan can be adjusted according to the needs of the user, thereby meeting the user's demand for the air supply angle of the circulation fan.

[0068] It should be noted that the opening direction of the U-shape can be toward the top of the circulation fan, and the opening direction of the U-shape can also be toward the side of the circulation fan, without application or limitation.

[0069] Specifically, the first movable frame 411 and the first fixed frame 412 can be formed by a bending process, which can not only effectively control the manufacturing cost of the first movable frame 411 and the first fixed frame 412, but also ensure the hardness of the first movable frame 411 and the first fixed frame 412, thereby improving the service life of the first rotating assembly 41.

[0070] It should be noted that the first movable frame 411 and the first fixed frame 412 can also be other curved structures, such as an arc structure, wherein one end of the first movable frame 411 is rotatably connected to one end of the first fixed frame 412, and the two ends of the body 10 are respectively connected to the other ends of the first movable frame 411 and the first fixed frame 412. It should be noted that the first movable frame 411 and the first fixed frame 412 can also be other curved structures, such as an arc structure, wherein one end of the first movable frame 411 is rotatably connected to one end of the first fixed frame 412, and the two ends of the body 10 are respectively connected to the other ends of the first movable frame 411 and the first fixed frame 412. In an optional embodiment, the second fixed frame 421 includes a first mounting surface 4212, a second mounting surface 4213 and a third mounting surface 4211, wherein the first mounting surface 4212 is rotatably connected to the first movable frame 411, the second mounting surface 4213 is rotatably connected to the second movable frame 422, and the third mounting surface 4211 is used to mount the body 10, which has a simple structure and a reasonable design.

[0071] Specifically, the first mounting surface 4212 and the second mounting surface 4213 are respectively arranged on two adjacent sides of the third mounting surface 4211, and the second movable frame 422 is an L-shaped structure. The horizontal end of the second movable frame 422 is rotatably connected to the second mounting surface 4213, and the vertical end of the second movable frame 422 is rotatably connected to the first fixed frame 412, so that the body 10 on the third mounting surface 4211 can be rotated left and right through the relationship between the second mounting surface 4213 and the second movable frame 422 and the relationship between the first movable frame 411 and the first fixed frame 412, and the body 10 can be rotated up and down through the relationship between the first mounting surface 4212 and the first movable frame 411 and the relationship between the second movable frame 422 and the first fixed frame 412, thereby ensuring that the user can adjust the air supply angle of the circulation fan as needed, thereby meeting the user's demand for the air supply angle of the circulation fan.

[0072] It should be noted that the second movable frame 422 may also be other curved structures, such as an arc-shaped structure, which is not limited in the present application.

[0073] After adopting the above technical scheme, since the two adjacent sides of the third mounting surface 4211 are bent to form the first mounting surface 4212 and the second mounting surface 4213, it can be ensured that the second fixed frame 421 has sufficient hardness to support the weight of the body 10; at the same time, the second movable frame 422 can also be formed by a bending process, which not only reduces the manufacturing cost of the second rotating component 42, but also the structural design is relatively reasonable and practical.

[0074] In an optional embodiment, the first rotating assembly 41 further includes a first bearing member 416 , and the first bearing member 416 is disposed between the first movable frame 411 and the first fixed frame 412 , so that the first movable frame 411 can be rotatably mounted on the first fixed frame 412 .

[0075] Specifically, the first bearing member 416 is a bearing seat, and the first fixing frame 412 is provided with a bearing seat fixing portion (not shown in the figure) and a first fixing frame fixing portion (not shown in the figure), and the first fixing frame fixing portion is arranged on the outside of the bearing seat fixing portion. In this embodiment, the first bearing member 416 is mounted on the bearing seat fixing portion by screws, and the first fixing frame 412 is fixed to the support assembly 30 by the first fixing frame fixing portion, which has a simple structure and a reasonable design.

[0076] In an optional embodiment, a fixed frame bearing 417 is provided on the vertical end of the first movable frame 411, and a movable frame bearing 426 is provided on the vertical end of the second movable frame 421. The second fixed frame 421 is connected to the first movable frame 411 via the fixed frame bearing 417, and the second movable frame 422 is connected to the first fixed frame 412 via the movable frame bearing 426. Not only is the structure simple, but it can also ensure the smoothness of the rotation between the second fixed frame 421 and the first movable frame 411 and between the second movable frame 422 and the first fixed frame 412.

[0077] In an optional embodiment, the first rotating assembly 41 further includes a first driving member 413 , wherein the first driving member 413 is mounted on the first movable frame 411 and is used to drive the second rotating assembly 42 to rotate relative to the first movable frame 411 .

[0078] It should be noted that the first driving member 413 can be installed on the vertical end of the first movable frame 411, and the first driving member 413 can also be installed on the horizontal end of the first movable frame 411. The first driving member 413 can be directly connected to the second rotating component 42, and the first driving member 413 can also be connected to the second rotating component 42 through other transmission components. This application is not limited to this. Its main purpose is to drive the second rotating component 42 to rotate relative to the first movable frame 411 so as to realize the up and down rotation of the body 10, ensuring that the user can adjust the air supply angle of the circulation fan as needed.

[0079] In an optional embodiment, the first rotating assembly 41 further includes a first transmission member 414, and the first transmission member 4141 includes a first driving wheel 4142 and a first driven wheel 4143, wherein the first driven wheel 4143 is in driving connection with the first driving wheel 4142. In this embodiment, the first driving member 413 includes a first motor, the first driving wheel 4142 is mounted on the output shaft of the first motor, and the first driven wheel 4143 is mounted on the second rotating assembly 42. In this way, not only can the up and down rotation of the machine body 10 be controlled by the first driving member 413, but also long-distance transmission can be performed, so that the first driving member 413 can be installed at any position of the first movable frame 411, that is, a reasonable design is performed according to the structure of the circulating fan to ensure the compactness of the circulating fan.

[0080] In an optional embodiment, the first transmission member 414 includes a first rack 4141 , and the first driving wheel 4142 is transmission-connected to the first driven wheel 4143 via the first rack 4141 .

[0081] Specifically, both ends of the first rack 4141 are provided with teeth, namely, a first tooth portion 4141a and a second tooth portion 4141b, and a driving wheel tooth portion 4142a is provided on the first driving wheel 4142. The driving wheel tooth portion 4142a is meshed and connected with the first tooth portion 4141a, and the second tooth portion 4141b is meshed and connected with the first driven wheel 4143. When the first driving member 413 is working, the first driving member 413 can drive the first driving wheel 4142 to rotate and drive the first rack to move through the meshing connection between the driving wheel tooth portion 4142a and the first tooth portion 4141a, and the first rack drives the first driven wheel 4143 to rotate through the meshing connection between the second tooth portion 4141b and the first driven wheel 4143, so that the second rotating assembly 42 can rotate relative to the first rotating assembly 41.

[0082] In an optional embodiment, the orientation of the first tooth portion 4141a is perpendicular to the orientation of the second tooth portion 4141b, for example, the first tooth portion 4141a is toward the right side of the circulation fan, and the second tooth portion 4141b is toward the upper end of the circulation fan. In this embodiment, the first rack is a two-degree bending structure, and the first tooth portion 4141a and the second tooth portion 4141b are respectively arranged at both ends of the first rack, so that the first driving member 413 can drive the second rotating assembly 42 to rotate over a long distance, and at the same time convert the horizontal rotation direction of the first driving wheel 4142 into the vertical rotation direction of the first driven wheel 4143.

[0083] In an optional embodiment, the first rotating assembly 41 further includes a guide seat 415 disposed on the first movable frame 411 , a sliding member 41411 is provided on the first rack, and the first rack 4141 is slidably mounted on the guide seat 415 via a guide rail 41411 .

[0084] Specifically, a guide groove 4151 is provided on the guide seat 415 , and the shape of the guide groove 4151 matches the shape of the guide slot, so that the first rack 4141 can be movably installed in the guide groove 4151 through the guide slide rail 41411 .

[0085] In an optional embodiment, the guide seat 415 can be integrally formed with the first movable frame 411, or the guide seat 415 can be separately formed with the first movable frame 411. In this embodiment, the guide seat 415 can be separately formed with the first movable frame 411, the first movable frame 411 is provided with a fixed frame mounting groove 4111, the first driving member 413 is installed in the fixed frame mounting groove 4111, and then the guide seat 415 is installed on the upper end of the first driving member 413.

[0086] Specifically, an open drive member installation groove (not shown in the figure) is provided on the guide seat 415, and the first drive member 413 is installed in the drive member installation groove. In this embodiment, the first rack 4141 is installed on the outer side of the upper end surface of the drive member installation groove, and the outer side of the lower end surface of the drive member installation groove is provided with a guide seat rotating shaft, and the guide seat 415 is rotatably installed in the first bearing member 416 through the guide seat rotating shaft, and the horizontal ends of the first drive member 413 and the first movable frame 411 are both embedded in the drive member installation groove.

[0087] In an optional embodiment, the first transmission member 414 includes a first belt, wherein the first driving wheel 4142 and the first driven wheel 4143 are both pulleys, that is, the first driving wheel 4142 is connected to the first driven wheel 4143 through the first belt, and the structure is simple but practical.

[0088] In an optional embodiment, the first transmission member 414 may also include a rod structure (not shown in the figure), wherein one end of the rod structure is connected to the output end of the first driving member 413, and the other end of the rod structure is connected to the body 10 for transmission. The structure is simple but practical.

[0089] Specifically, the rod structure includes a first rod (not shown in the figure) and a first rack (not shown in the figure). A cam structure (not shown in the figure) is provided on the first driving member 413. The first rod is installed on the cam structure to drive the first rack to drive the body 10 to perform a swinging motion.

[0090] The first driving member 413 may be a driving motor, a pump or a gas or other power element, and its main purpose is to drive the body 10 to swing through the first transmission member 414, which is not limited in this application. In this embodiment, the first driving member 413 is a driving motor, which drives the first rod to move along the track groove on the circulating fan through a cam structure, thereby driving the first rack connected to the first rod to move linearly, and the first rack is used to drive the gear on the body 10 to rotate, so that the body 10 can rotate with the rotation of the gear.

[0091] In an optional embodiment, a slide groove (not shown in the figure) is provided on the first rod, wherein the first rack can be slidably installed in the slide groove, and the tooth portion of the first rack is meshed with the gear on the body 10 so that the body 10 can rotate as the gear rotates.

[0092] In addition, the rod structure can also include a first rod (not shown in the figure), a second rod (not shown in the figure) and a third rod (not shown in the figure), wherein one end of the first rod is connected to the output end of the first driving member, the other end of the first rod is transmission-connected to one end of the third rod through the second rod, and the other end of the third rod is transmission-connected to the body 10, so that the first driving member 413 can drive the body 10 to rotate through the rod structure.

[0093] Specifically, the first rod and the third rod are both provided with a slide groove (not shown in the figure), one end of the second rod can be slidably installed in the slide groove on the first rod, and the other end of the second rod can be slidably installed in the slide groove on the third rod.

[0094] When the first driving member 413 is working, the first driving member 413 drives the first rod to make a linear motion on the circulation fan, and the first rod drives the second rod to make a linear motion through the slide groove on the first rod, so that the second rod can slide in the slide groove on the third rod, thereby driving the body 10 to make a swinging motion through the third rod.

[0095] In an optional embodiment, the rod structure further includes a sleeve (not shown in the figure), and the second rod moves linearly on the circulation fan through the sleeve.

[0096] Specifically, the second rod is arranged between the first rod and the third rod, and the sliding direction of the second rod is perpendicular to the sliding direction of the first rod, so that the first rod can drive the third rod to slide or swing through the second rod, thereby driving the body 10 to swing.

[0097] In an optional embodiment, the third rod is rotatably mounted on the circulation fan through a rotating fulcrum at one end close to the body 10. When the second rod slides in the slide groove on the third rod, the third rod rotates around the rotating fulcrum, thereby driving the body 10 on the third rod to swing.

[0098] In an optional embodiment, the second rotating assembly 42 further includes a second driving member 423 . The second driving member 423 is installed on the second movable frame 422 and is used to drive the second fixed frame 421 to rotate relative to the second movable frame 422 .

[0099] In an optional embodiment, the second rotating assembly 42 further includes a second transmission member 424 , and the second driving member 423 is transmission-connected to the second fixed frame 421 via the second transmission member 424 , so as to drive the second fixed frame 421 to rotate relative to the second movable frame 422 .

[0100] In an optional embodiment, an open driving member fixing groove 4221 is provided on the horizontal end of the second movable frame 421 , wherein the second driving member 423 is installed in the driving member fixing groove 4221 .

[0101] Specifically, the second rotating assembly 42 further includes a support seat 425 disposed on the second movable frame 422, and the support seat 425 is mounted on the upper end of the second driving member 423. In this embodiment, the second driving member 423 is a driving motor, and the shape and size of the driving member fixing groove 4221 are adapted to the shape and size of the second driving member 423. After the second driving member 423 is fixed in the driving member fixing groove 4221, the support seat 425 is mounted on the upper end of the second driving member 423, so that the fixing flange of the second driving member 423 is clamped between the support seat 425 and the second movable frame 422, thereby improving the stability of the fixing of the second driving member 423.

[0102] The support base 425 is provided with a shaft portion 4251 , and the second fixed frame 421 is rotatably mounted on the shaft portion 4251 via the second transmission member 424 , so that the second driving member 423 can drive the second fixed frame 421 to rotate relative to the second movable frame 422 via the second transmission member 424 .

[0103] In an optional embodiment, the second transmission member 424 includes a driving gear 4241 and a driven gear 4242, and the driven gear 4242 is drivingly connected to the driving gear 4241. In this embodiment, the driving gear 4241 is installed on the output end of the second driving member 423, and the driven gear 4242 is fixed on the second fixing frame 421.

[0104] Specifically, a rotating shaft hole 4242 a is provided on a side of the driven gear 4242 facing away from the second fixing frame 421 , so that the driven gear 4242 can be rotatably mounted on the rotating shaft portion 4251 through the rotating shaft hole 4242 a , and the structure is simple but practical.

[0105] After adopting the above technical solution, the first turning direction of the driving mechanism 40 can be realized by the first driving member 413 and the second turning direction can be realized by the second driving member 423, so that the user can adjust the air supply angle of the circulating fan pair through the cooperation of the first driving member 413 and the second driving member 423. In addition, the first driving member 413 and the second driving member 423 are independent of each other, that is, the angular rotation speed of each direction of the circulating fan can be controlled, and the area of ​​the circulating fan air supply angle can be accurately adjusted, with good angle control function and angle rotation speed controllability.

[0106] In an optional embodiment, the first driven wheel 4143 has a driven gear mounting shaft, and the first driven wheel 4143 is connected to the fixed frame bearing 417 via the driven gear mounting shaft to ensure smooth rotation between the first driven wheel 4143 and the first movable frame 411 .

[0107] In an optional embodiment, the front shell 12 includes an air guide tube 122 and a front mesh cover 121, wherein the front mesh cover 121 is disposed at the front end of the air guide tube 122. In this embodiment, the distance from the center of the fan blade 11 to the front mesh cover 121 of the air guide tube 122 is at least 15 mm to 35 mm to ensure that the air guide tube 122 has an optimal air guiding effect. It can be understood that if the length of the air duct is too short, it will not play the role of guiding the air, and if the length of the air duct is too long, the weight of the front shell 12 will be increased, materials will be wasted, and manufacturing costs will be increased.

[0108] After adopting the above technical scheme, since the application limits the length of the air guide tube 122, it can not only ensure the wind guiding function of the air guide tube 122, but also enable the wind of the circulating fan to be gathered in the process of blowing from the center of the fan blade 11 to the front mesh cover 121, thereby reducing the blowing area and increasing the wind speed, thereby increasing the air supply distance of the circulating fan, and then through the front mesh cover 121, it can be blown to the user more evenly, making it more comfortable.

[0109] In an optional embodiment, the distance between the air guide tube 122 from the center of the fan blade 11 to the front mesh cover 121 is 35 mm. Since there is a certain error in the molding process of the air guide tube 122, the distance between the air guide tube 122 from the center of the fan blade 11 to the front mesh cover 121 can be any value between 30-40 mm to ensure that the air guide tube 122 has the best air guiding effect.

[0110] In an optional embodiment, the radial gap between the air guide tube 122 and the fan blades 11 is 2-10 mm to avoid interference between the air guide tube 122 and the fan blades 11, while ensuring that the wind generated by the fan blades 11 can flow from the radial gap between the air guide tube 122 and the fan blades 11 along the guide direction of the air guide tube 122 to the front mesh cover 121.

[0111] In an optional embodiment, the first air outlet mesh plate is composed of a plurality of grille bars at a preset rotation angle, and the thickness of each grille bar is 4-15 mm.

[0112] In an optional embodiment, the thickness of the grid bars is 1-4 mm.

[0113] In an optional embodiment, the gap between each grid bar is 4-8 mm.

[0114] In an optional embodiment, the front mesh cover 121 includes a mesh cover outer ring and a mesh cover inner ring, wherein the mesh cover inner ring is arranged on the inner side of the mesh cover outer ring, and a first air outlet mesh plate 1212 is provided on the mesh cover outer ring. The first air outlet mesh plate 1212 can allow the wind blown out by the circulation fan to diffuse in all directions, and the mesh cover inner ring is used to eliminate the noise generated when the circulation fan is working.

[0115] Specifically, the inner circle of the mesh cover has a second air outlet mesh plate 1213, and the rotation angle of the second air outlet mesh plate 1213 is opposite to the rotation angle of the first air outlet mesh plate 1212, which can play a role in noise reduction.

[0116] In an optional embodiment, the inner ring of the mesh cover includes an outer ring and a center disk 1214, wherein the center disk is located on the inner side of the outer ring, and the second air outlet mesh plate 1213 is connected between the outer ring and the center disk 1214. In this embodiment, the outer ring of the mesh cover includes an outer ring edge 1211, one end of the first air outlet mesh plate 1212 is connected to the outer ring edge 1211, and the other end of the first air outlet mesh plate 1212 is connected to the outer ring, wherein the diameter of the inner ring is 10 to 30 mm, thereby reducing the noise of the circulation fan by 1.3 dB.

[0117] In an optional embodiment, a solid structure is provided at the center of the inner circle of the mesh cover, and the outer diameter of the solid structure is equal to (0.02-0.3) times the outer diameter of the inner circle of the mesh cover.

[0118] In an optional embodiment, a cross-shaped structure is provided on the inner side of the inner circle of the mesh cover.

[0119] In an optional embodiment, a second air outlet mesh plate composed of grille plates is provided on the inner circle of the mesh cover, and the number of the grille plates is less than the number of grille bars on the first air outlet mesh plate.

[0120] In an optional embodiment, the width of the grid plate is smaller than the width of the grid bars.

[0121] In an optional embodiment, the rotation direction of the grid plate is opposite to the rotation direction of the grid bars.

[0122] In an optional embodiment, the first air outlet mesh plate 1212 is twisted counterclockwise on the outer circle of the mesh cover, and the inner circle of the mesh cover is a solid structure or a concentric circle structure, so as to better eliminate the noise generated when the circulation fan is working.

[0123] In an optional embodiment, the front mesh cover 121 includes a solid mesh cover inner ring and a mesh cover outer ring with a first air outlet mesh plate, and the mesh cover inner ring is located inside the mesh cover outer ring, mainly for reducing the noise generated when the circulation fan is working.

[0124] In an optional embodiment, the inner mesh circle and the outer mesh circle may be integrally formed so as to better control the manufacturing cost of the front mesh circle 121 .

[0125] In an optional embodiment, the front mesh cover 121 is detachably connected to the air guide tube 122. Specifically, the outer ring edge 1211 has a flange protruding toward the rear shell 13, and the air guide tube 122 includes an outer shell 1221, an inner shell 1222 and a reinforcing rib 1223, and the reinforcing rib 1223 is arranged between the outer shell 1221 and the inner shell 1222, and the flange of the front mesh cover 121 is clamped on the inner shell 1222 or the reinforcing rib 1223.

[0126] In the present embodiment, there are a plurality of reinforcing ribs 1223, and the plurality of reinforcing ribs 1223 are arranged in a circular array at intervals between the outer shell 1221 and the inner shell 1222. This not only ensures the strength of the air guide tube 122, but also reduces the manufacturing cost of the air guide tube 122 and saves a large amount of manufacturing materials. In addition, it is also convenient to form a cavity between the outer shell 1221 and the inner shell 1222 to install other electronic components of the circulation fan, so that the structure of the circulation fan is more compact and the design is more reasonable.

[0127] In an optional embodiment, the length of the inner shell 1222 extending toward the front mesh cover 121 is smaller than the length of the outer shell 1221 extending toward the front mesh cover 121, so that the flange is just snapped onto the reinforcing rib 1223, thereby improving the stability of the connection between the front mesh cover 121 and the air guide tube 122.

[0128] In an optional embodiment, the rear shell 13 includes a rear mesh cover 132, and a rear shell storage cavity 131 is provided on the rear mesh cover 132, wherein the driving mechanism 40 is stored in the rear shell storage cavity 131 to prevent the driving mechanism 40 from affecting the appearance of the circulation fan, and also to protect the driving mechanism 40. When working in circulation, the gas can enter the accommodating space from the rear mesh cover 132 and then be discharged through the front mesh cover 121 along the air guide tube 122, thereby reducing the influence of the rear shell 13 on the air duct formed by the air guide tube 122 when the body 10 rotates, thereby making the air suction smoother and the air volume more sufficient.

[0129] After adopting the above technical solution, since the wind guide tube 122 surrounds the outer side of the fan blade 11, the wind guide tube 122 can be used to gather the wind and increase the wind force, so that the gas can be discharged from the rear mesh cover 132 along the wind guide tube 122 and the front mesh cover 121, bringing better heat dissipation effect to the user.

[0130] In an optional embodiment, the support assembly 30 includes a support column, a storage shell 31 with an opening 311 is provided on the support column, and the drive mechanism 40 is installed in the storage shell 31 .

[0131] Specifically, the storage shell 31 is cylindrical, and the shape of the rear shell storage cavity 131 is adapted to the shape of the storage shell 31, so that the rear shell 13 can be rotatably installed on the storage shell 31 through the rear shell storage cavity 131. In this embodiment, the opening 311 of the storage shell 31 is set at the upper part of the storage shell 31 and faces the rear shell 13. The first fixed frame 412, the first movable frame 411, the second fixed frame 421 and the second movable frame 422 are sequentially installed in the storage shell 31 from the opening 311 of the storage shell 31, and then the fan motor 14 and the bottom of the rear shell storage cavity 131 are fixed on the second fixed frame 421, so that the entire driving mechanism 40 can be installed in the cavity formed by the rear shell storage cavity 131 and the storage shell 31. When the circulation fan is working, the driving mechanism 40 can drive the rear shell storage cavity 131 to rotate relative to the storage shell 31, and the structure is simple and the design is reasonable.

[0132] In an optional embodiment, the first fixed frame 412 is installed in the storage shell 31 through the first fixed frame fixing portion, and the first movable frame 411, the second fixed frame 421 and the second movable frame 422 are rotatably connected to the first fixed frame 412 in sequence.

[0133] In an optional embodiment, the rear shell storage cavity 131 is a groove formed by the rear shell 13 being recessed into the accommodating space, and the width of the rear shell storage cavity 131 is greater than the overall width of the driving mechanism 40 , so that the entire driving mechanism 40 can be accommodated in the rear shell storage cavity 131 .

[0134] In an optional embodiment, a rear shell shaft hole 1313 is provided on the rear shell 13, and the output end of the fan motor 14 passes through the rear shell shaft hole 1313 and is connected to the fan blade 11, so that the fan motor 14 can drive the fan blade 11 to rotate relative to the rear shell 13, bringing better heat dissipation effect to the user.

[0135] In an optional embodiment, the rear shell 13 is provided with a fan blade avoidance groove 1312 on the side facing away from the rear shell storage cavity 131, and the fan blade 11 is provided with a fan blade shaft 1121. The fan blade shaft 1121 is connected to the output shaft of the fan motor 14 at the position of the fan blade avoidance groove 1312, which can effectively provide sufficient installation space for the fan blade 11 and also avoid the problem of collision between the fan blade 11 and the rear shell 13.

[0136] In an optional embodiment, the rear shell 13 is provided with a rear shell fixing portion 1311 at the position of the rear shell receiving cavity 131 , wherein the rear shell 13 is fixed to the driving mechanism 40 via the rear shell fixing portion 1311 .

[0137] Specifically, the second fixing frame 421 is provided with a fixing frame mounting portion and a fixing frame through hole 4211a. The fan motor 14 passes through the fixing frame through hole 4211a and the rear shell shaft hole 1313 in sequence and is connected to the fan blade shaft 1121. The second fixing frame 421 is fixed to the rear shell fixing portion 1311 through the fixing frame mounting portion.

[0138] In an optional embodiment, the fan blade 11 includes a fan blade fixing shaft 112 arranged at the center of the fan blade 11 and a blade assembly 111 located outside the fan blade fixing shaft 112, wherein the fan blade rotating shaft 1121 is arranged at the center of the fan blade fixing shaft 112. In this embodiment, the blade assembly 111 includes a first blade 1111, a second blade 1112 and a third blade 1113, the first blade 1111 and the second blade 1112 twist in the same direction, and the third blade 1113 is connected between the middle of the first blade 1111 and the second blade 1112, so that when the blade assembly 111 rotates, the pressure on the first blade 1111 and / or the second blade 1112 can be changed, so that the area with a larger pressure difference is distributed more widely, and the gas on the first blade 1111 and / or the second blade 1112 is prevented from easily generating eddy currents or separation phenomena, thereby effectively improving the kinetic energy of the gas, and having the advantages of concentrating the airflow, increasing the flow rate and reducing the noise.

[0139] In an optional embodiment, the number of blade assemblies 111 is at least three groups, and the three groups of blade assemblies 111 are evenly arranged on the outside of the fan blade fixing shaft 112 with the fan blade fixing shaft 112 as the center, which can effectively increase the output air volume of the circulating fan and the distance that the airflow enters the indoor or environmental space, while also ensuring the stability of the rotation of the fan blades 11 and reducing noise.

[0140] In an optional embodiment, the first blade 1111 includes a first section 11111 and a second section 11112, wherein the first section 11111 is connected to the fan blade fixing shaft 112, the second section 11112 is connected to the first section 11111, and the third blade 1113 is arranged between the first section 11111 and the second section 11112, so that the blade assembly 111 has the function of guiding the airflow and reducing the resistance of the airflow output, thereby increasing the flow rate of the airflow, and then extending the distance of the airflow output, thereby improving the regulation effect of the indoor airflow circulation temperature.

[0141] In an optional embodiment, the width of the first section 11111 is different from the width of the second section 11112 and the width of the second blade 1112. When the fan motor 14 drives the blade assembly 111 to rotate, the width of the first section 11111 and the second section 11112 and the second blade 1112 can generate air volumes of different sizes and blowing at different angles. These air volumes of different sizes and different angles all act on the air guide 122 and are discharged from the front mesh cover 121 along the air guide 122 and blown to the surroundings of the room, thereby reducing the indoor temperature.

[0142] In an optional embodiment, the first section 11111 is inclined with the fan blade fixing shaft 112 and forms a first angle, the second blade 11112 is inclined with the fan blade fixing shaft 112 and forms a second angle, and the first angle is different from the second angle. This can effectively change the flow direction of the airflow, so that the airflow is discharged from the front mesh cover 121 in turn and blows to all sides of the room.

[0143] In an optional embodiment, the second section 11112 and the third blade 1113 are inclined to form a third angle, which is different from the first angle and the second angle, and once again effectively changes the flow direction of the airflow, so that the airflow is discharged from the front mesh cover 121 in turn and blows to all sides of the room.

[0144] In an optional embodiment, the third blade 1113 is arranged concentrically with the fan blade fixing shaft 112, which can not only reduce the resistance encountered by the blade assembly 111 during operation, but also enhance the strength of the first blade 1111 and the second blade 1112, thereby increasing the service life of the first blade 1111 and the second blade 1112.

[0145] In an optional embodiment, the third blade 1113 is in a triangular structure, wherein the first blade 1111 is connected to one side of the third blade 1113, and the second blade 1112 is connected to the other side of the third blade 1113. The design can be based on the stress conditions of the first blade 1111 and the second blade 1112. The blade assembly 111 can generate a large air volume while ensuring the service life of the blade assembly 111. The structure is simple and the design is reasonable.

[0146] In an optional embodiment, the circulation fan is provided with a sensor and an MCU control chip arranged on the circuit board 50 , wherein the sensor is electrically connected to the MCU control chip for controlling the direction of the driving mechanism 40 and the power supply of the fan motor 14 .

[0147] In an optional embodiment, a sensor installation cavity 33 is provided on the support column, and the sensor can be installed on the circuit board 50, or the sensor can be provided separately from the circuit board 50. In this embodiment, the sensor and the circuit board 50 are both installed in the sensor installation cavity 33.

[0148] It should be noted that the sensor can be an infrared sensor or a camera, etc. Its main purpose is to enable the fan motor 14, the first drive member 413 and the second drive member 423 to be adjusted after the sensor signal is fed back to the MCU control chip, so as to control the rotation speed of the fan motor 14 and the direction of the drive mechanism 40, etc.

[0149] After adopting the above technical solution, since the present application uses an infrared sensor to sense whether a person is present, and then transmits the signal obtained by the infrared sensor to the MCU control chip to control the switch and speed of the circulation fan, it is not only more humane but also saves energy.

[0150] In an optional implementation, the sensor may also be a temperature sensor, and the signal of the temperature sensor may be DS18B20, so that the circulation fan can control the speed of the fan according to the current room temperature to save energy.

[0151] In an optional embodiment, the sensor may also be a sound sensor, so that the circulation fan can judge the surrounding movement based on the sound, and then control the switching of the circulation fan, thereby saving energy.

[0152] In an optional embodiment, the sensor installation cavity 33 is disposed below the storage shell 31, wherein a window is provided on one side of the sensor installation cavity 33, and the other side of the sensor installation cavity is an open end, so that the sensor can be installed in the sensor installation cavity through the open end, and then the sensor transmits a signal to the outside of the sensor installation cavity through the window to obtain a detection signal.

[0153] In an optional embodiment, the support assembly 30 further includes a first cover plate 32, which covers the open end, and can not only encapsulate the sensor in the sensor installation cavity to protect the sensor, but also does not affect the aesthetics of the circulation fan.

[0154] In an optional embodiment, the first cover plate 32 is in a concave shape, and its two protruding ends are fixed in the sensor installation cavity by screws.

[0155] In addition, the sensor can also be installed above the rear shell storage cavity 131. Specifically, a sensor mounting portion 1314 is provided at the upper end of the rear shell storage cavity 131, wherein the sensor is detachably mounted on the sensor mounting portion 1314, which not only ensures the range of sensor detection, but also can dissipate the heat generated by the sensor due to operation to the outside through the airflow generated by the body 10. Therefore, the peripheral side of the sensor mounting portion is designed with a hole structure, which is simple and reasonable.

[0156] In an optional embodiment, a display screen 60 is also provided on the circulation fan. The display screen is electrically connected to the MCU control chip and is used to display the current room temperature, the rotation speed of the fan motor 14 and the working mode of the circulation fan, etc., so that people can see it clearly at a glance.

[0157] The display screen 60 may also be a touch display screen, and the user may control the speed of the fan motor 14 and the working mode of the circulation fan through the display screen, or the display screen 60 may also be a flexible display screen, a flat screen or a curved screen. This application is not limited thereto.

[0158] In an optional embodiment, the display screen is arranged at 30-70 mm from the lower end of the front shell.

[0159] In an optional embodiment, the display screen 60 can be disposed on the end surface of the first cover plate 32 and designed integrally with the first cover plate 32, and then the first cover plate 32 is covered on the open end of the sensor installation cavity 33, which is a simple but reasonable design.

[0160] Specifically, a display screen fixing portion is provided at the bottom of the sensor installation cavity 33 , and the first cover plate 32 is fixed to the display screen fixing portion by a fastener.

[0161] In this embodiment, the sensor is mounted on a circuit board 50 , and the circuit board 50 is embedded on the back side of the first cover plate 32 , wherein a support structure is provided on the first cover plate, and the display screen 60 is mounted on the support structure.

[0162] In an optional embodiment, the display screen 60 can also be installed on the air guide tube 122, which has a simple and reasonable structure.

[0163] Specifically, a display screen installation opening 1324 is provided on the outer shell 1211 , and the display screen 60 is installed on the display screen installation opening 1324 .

[0164] In this embodiment, the air guide tube 122 further includes a support frame 70 , wherein the display screen 60 is installed on the display screen installation opening 1324 through the support frame 70 , which can effectively provide support and protection for the display screen 60 .

[0165] In an optional embodiment, a wireless communication module is also provided on the circulation fan, and the wireless communication module may be USR-215b, so that the mobile phone can send a signal to the MCU control chip through the wireless communication module to adjust the working mode of the circulation fan, or receive a signal through the wireless communication receiving module to display the working status of the circulation fan on the operating interface of the mobile phone or other electronic devices.

[0166] After adopting the above technical solution, since the circulation fan of the present application is provided with a sensor and a display screen 60, the sensor can be used to determine whether there is a person within a certain range of the circulation fan, and the signal collected by the sensor is transmitted to the MCU control chip, thereby controlling the working state of the circulation fan. Among them, the display screen 60 allows the user to understand the working state of the circulation fan more intuitively.

[0167] In addition, the circulation fan of the present application can easily realize the left and right swinging and the up and down swinging of the circulation fan through the first rotating component 41 that rotates left and right and the second rotating component 42 that rotates up and down. At the same time, it has the advantages of simple and compact structure, easy installation, and a small number of parts. It is conducive to the small design of the circulation fan casing at the driving position, making the entire circulation fan smaller and more beautiful, and better meeting people's needs.

[0168] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0169] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0170] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0171] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0172] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A circulating fan, characterized in that: include: A base, provided with a support assembly, on which a driving mechanism is mounted, wherein the driving mechanism comprises a first rotating assembly having a first turning direction and a second rotating assembly having a second turning direction; A body, comprising a fan blade, a front shell, a rear shell and a fan motor for driving the fan blade to rotate, wherein the front shell is joined with the rear shell to form an accommodating space, the fan blade is arranged in the accommodating space, and the fan motor is installed on the second rotating assembly; Wherein, the fan blade comprises a fan blade fixing shaft arranged at the center of the fan blade and a blade assembly located outside the fan blade fixing shaft, the blade assembly comprises a first blade, a second blade and a third blade, the first blade and the second blade are twisted in the same direction, and the third blade is connected between the middle parts of the first blade and the second blade; The first blade includes a first section and a second section, the first section is connected to the fan blade fixing shaft, the second section is connected to the first section, the third blade is arranged between the first section and the second section, and the width of the first section is different from the width of the second section and the width of the second blade; The third blade is arranged concentrically with the fan blade fixing shaft; The third blade is in a triangular structure, the first blade is connected to one side of the third blade, and the second blade is connected to the other side of the third blade.

2. The circulation fan according to claim 1, characterized in that: The number of the blade assemblies is at least three groups, and the three groups of blade assemblies are evenly arranged on the outside of the blade fixing shaft with the blade fixing shaft as the center.

3. The circulation fan according to claim 2, characterized in that: The first section is inclined with the fan blade fixing axis and forms a first angle, the second blade is inclined with the fan blade fixing axis and forms a second angle, and the first angle is different from the second angle.

4. The circulation fan according to claim 3, characterized in that: The second section and the third blade are arranged obliquely to form a third angle, and the third angle is different from the first angle and the second angle.

5. The circulation fan according to claim 1, characterized in that: The circulation fan is provided with a sensor for sensing the presence of a person and an MCU control chip arranged on a circuit board. The sensor is electrically connected to the MCU control chip and is used to control the direction of the driving mechanism and the power supply of the fan motor.

6. The circulation fan according to claim 5, characterized in that: A display screen is installed on the body, and the display screen is electrically connected to the MCU control chip.

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