Tower fan

Abstract

The utility model relates to the technical field of air temperature regulation, and provides a tower fan which comprises a fan body, a fan cover and a fan cover. The air outlet grille is installed on the air outlet window, the air outlet grille comprises at least two swing blade assemblies, each swing blade assembly comprises a plurality of swing blades extending in the vertical direction, the swing blades swing in the width direction of the air outlet window, and the orientations of at least part of the swing blades in the swing blade assemblies are not synchronous. According to the tower fan, due to the fact that the tower fan comprises the at least two swing blade assemblies, and the directions of the swing blades of the swing blade assemblies are not completely synchronous, it can be guaranteed that the swing blades of the multiple swing blade assemblies can reach the corresponding areas in sequence, and the blowing frequency of the tower fan is improved. For a user, the swing blades of the different swing blade assemblies sequentially blow the airflow to the area where the user is located, the blowing frequency experienced by the user can be multiplied, the effective air supply time of the tower fan is greatly prolonged, and the blowing effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air temperature regulation technical field especially relates to tower fan. BACKGROUND

[0002] The height direction size of tower fan is generally larger than the size of other directions, especially the width direction size of the outflow window of tower fan is smaller, and then in the related technology, in order to improve the outflow width of the outflow window, swing leaf is designed in the outflow grid, and the outflow area in the width direction is increased by the left and right swing of swing leaf. However, the time of swing leaf swing for a round trip is long, and then for the user, the effective air supply time is too short, which affects the user experience. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the related art is solved. To this end, the utility model provides a tower fan, which can improve the effective air supply time.

[0004] The tower fan according to the utility model embodiment comprises:

[0005] A machine body is formed with an outflow window.

[0006] An outflow grid is installed on the outflow window, and the outflow grid comprises at least two swing leaf assemblies, each swing leaf assembly comprises a plurality of swing leaves extending along a vertical direction, the swing leaves swing along the width direction of the outflow window, and the swing leaves in at least part of the swing leaf assemblies are different in orientation.

[0007] The tower fan according to the utility model embodiment comprises at least two swing leaf assemblies, and the swing leaves of the swing leaf assemblies are not completely synchronized in orientation, so that the swing leaves of the swing leaf assemblies can reach the corresponding areas in sequence, thereby improving the blowing frequency of the tower fan. For the user, the swing leaves of different swing leaf assemblies blow air flow to the area where the user is in sequence, the blowing frequency experienced by the user can be doubled, the effective air supply time of the tower fan is greatly prolonged, and the blowing effect is improved.

[0008] According to one embodiment of the utility model, the swing leaf assembly comprises an upper swing leaf assembly and a lower swing leaf assembly, the outflow window is provided with an air outlet frame, the air outlet frame comprises a top cross beam and a bottom cross beam, a middle cross beam is fixed in the middle of the air outlet frame, the upper swing leaf assembly is installed between the top cross beam and the middle cross beam, and the lower swing leaf assembly is installed between the bottom cross beam and the middle cross beam.

[0009] According to one embodiment of the utility model, the middle cross beam is detachably installed on the air outlet frame.

[0010] According to one embodiment of the utility model, the both ends of the middle crossbeam are provided with fixed blocks, the air outlet frame is provided with fixed holes, and the fixed blocks are fixed in the fixed holes.

[0011] According to one embodiment of the utility model, the top of the air outlet frame is provided with a first open slot, the bottom of the air outlet frame is provided with a second open slot, the upper surface of the middle crossbeam is provided with a first pin shaft, the lower surface of the middle crossbeam is provided with a second pin shaft, the top of the swing leaf of the upper swing leaf assembly is provided with a first rotating shaft which can be installed in the first open slot, the bottom of the swing leaf of the upper swing leaf assembly is provided with a first mounting hole which rotates with the first pin shaft, the top of the swing leaf of the lower swing leaf assembly is provided with a second mounting hole which cooperates with the second pin shaft, and the bottom of the swing leaf of the lower swing leaf assembly is provided with a second rotating shaft which can be installed in the second open slot.

[0012] According to one embodiment of the utility model, the first open slot and the second open slot are both provided with a guide section and a rotating section, the first rotating shaft and the second rotating shaft both enter the rotating section along the guide section and can be rotatably installed in the rotating section.

[0013] According to one embodiment of the utility model, the tower fan comprises a motor and a driving link which are coupled, the driving link is provided with a third open slot, the swing leaf is provided with a connecting rod, the third open slot and the connecting rod correspond to each other and can rotate, and the connecting rod is different in shaft from the first rotating shaft or the second rotating shaft.

[0014] According to one embodiment of the utility model, the tower fan comprises a first motor and a second motor, the driving link comprises a first driving link and a second driving link, the first motor is connected with the first driving link, the second motor is connected with the second driving link, the first driving link is arranged at the top of the upper swing leaf assembly, and the second driving link is arranged at the bottom of the lower swing leaf assembly.

[0015] According to one embodiment of the utility model, the driving link is provided with a mounting groove, the output end of the motor is connected with an eccentric wheel, and the eccentric wheel cooperates with the inner surface of the mounting groove to swing the driving link.

[0016] According to one embodiment of the utility model, when the swing leaf of the upper swing leaf assembly swings to a first limit angle of the air outlet window, the swing leaf of the lower swing leaf assembly swings to a second limit angle of the air outlet window, and the first limit angle and the second limit angle are limit angles in opposite directions along the width direction of the air outlet window.

[0017] The additional aspects and advantages of the present application will be given partly in the following description, and partly will become obvious from the following description, or will be understood by those skilled in the art through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the related art, the drawings needed to be used in the following embodiment or related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] Figure 1 is an explosion schematic view of the tower fan provided by the embodiment of the present application.

[0020] Figure 2 is Figure 1 is a local enlarged schematic view of A in the figure.

[0021] Figure 3 is Figure 1 is a local enlarged schematic view of B in the figure.

[0022] Figure 4 is Figure 1 is a local enlarged schematic view of C in the figure.

[0023] Figure 5 is a perspective schematic view of the tower fan provided by the embodiment of the present application.

[0024] Figure 6 is an assembly schematic view of the swing leaf assembly of the embodiment of the present application.

[0025] REFERENCE SIGNS:

[0026] 100, machine body; 110, air outlet window;

[0027] 200, air outlet grille; 210, swing leaf assembly; 211, upper swing leaf assembly; 2111, first rotating shaft; 2112, first mounting hole; 212, lower swing leaf assembly; 2121, second rotating shaft; 2122, second mounting hole; 213, connecting rod; 214, swing leaf;

[0028] 300, air outlet frame; 310, top cross beam; 311, first open slot; 3111, guide section; 3112, rotating section; 320, bottom cross beam; 321, second open slot; 330, fixing hole; 340, fixing slot;

[0029] 400, middle cross beam; 410, first pin shaft; 420, second pin shaft; 430, fixing block; 431, guide surface;

[0030] 500, first motor; 600, second motor; 700, driving link; 710, shifting lever; 711, mounting groove; 720, third opening groove; 800, eccentric wheel. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0032] In the description of the present application, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0036] Since the tower fan in the prior art has the problem of short effective air supply time, the present application provides a tower fan, please see Figure 1 , comprising a body 100 and an air outlet grille 200. The body 100 is formed with an air outlet window 110, and the air outlet grille 200 is installed on the air outlet window 110. The air outlet grille 200 includes at least two swing leaf assemblies 210, each swing leaf assembly 210 includes a plurality of swing leaves 214 extending along the vertical direction, the swing leaves 214 swing along the width direction of the air outlet window 110, and the swing leaves 214 in at least part of the swing leaf assemblies 210 are different in orientation.

[0037] According to the tower fan of the present application, since it includes at least two swing leaf assemblies 210, and the swing leaves 214 of the swing leaf assemblies 210 are not completely synchronized in orientation, the swing leaves 214 of the plurality of swing leaf assemblies 210 can reach the corresponding area in turn, thereby improving the blowing frequency of the tower fan. For the user, the swing leaves 214 of different swing leaf assemblies 210 blow air to the area where the user is located in turn, and the blowing frequency experienced by the user can be doubled, greatly prolonging the effective air supply time of the tower fan and improving the blowing effect.

[0038] When the number of swing leaf assemblies 210 is two, the blowing frequency experienced by the user can be doubled. When the number of swing leaf assemblies 210 is more, the frequency experienced by the user is more obvious. Obviously, the number of swing leaf assemblies 210 is not limited, and when it is two, the structure is relatively simple, but the number can also be three or more. Considering that the structure of the tower fan is generally large in height direction, the plurality of swing leaf assemblies 210 can be divided along the height direction as Figure 1 , of course, the plurality of swing leaf assemblies 210 of the tower fan can also be divided along the width direction of the air outlet window 110.

[0039] In addition, the "asynchronous orientation of the leaves 214 in the leaf assembly 210" includes the following cases: the orientations of the leaves 214 in all leaf assemblies 210 are asynchronous; or, the orientations of the leaves 214 in part of the leaf assemblies 210 are synchronous, and the orientations of the leaves 214 in part of the leaf assemblies 210 are asynchronous. For example, when there are three sets of leaf assemblies 210 arranged along the height direction, the middle leaf assembly 210 can swing in one direction, and the upper and lower leaf assemblies 210 can swing in another direction.

[0040] It is worth mentioning that the frequencies of the plurality of leaf assemblies 210 can be completely synchronous, and the swing periods or period changes of different leaf assemblies 210 are completely consistent. Of course, the plurality of leaf assemblies 210 can also have different frequencies, and the swing frequency of part of the leaf assemblies 210 is higher than that of the other leaf assemblies 210. For example, the swing frequency of the upper leaf assembly 210 can be lower than that of the bottom leaf assembly 210, so that the user's head feels a relatively low blowing frequency, which can improve comfort while ensuring the blowing effect.

[0041] According to an embodiment of the present application, please refer to Figure 2 , the leaf assembly 210 includes an upper leaf assembly 211 and a lower leaf assembly 212. In this case, the swing direction of the leaf 214 of the upper leaf assembly 211 can be exactly opposite to that of the leaf 214 of the lower leaf assembly 212, that is, when the leaf 214 of the upper leaf assembly 211 swings to the first limit angle of the air outlet window 110, the leaf 214 of the lower leaf assembly 212 swings to the second limit angle of the air outlet window 110, and the first limit angle and the second limit angle are limit angles in opposite directions along the width direction of the air outlet window 110. In this case, the blowing frequency of each area is relatively uniform, which can ensure a better blowing experience for the user.

[0042] In combination with Figure 1 and Figure 2The air outlet frame 300 is provided with a top beam 310 and a bottom beam 320, and a middle beam 400 is fixed in the middle of the air outlet frame 300. The upper swing leaf assembly 211 is installed between the top beam 310 and the middle beam 400, and the lower swing leaf assembly 212 is installed between the bottom beam 320 and the middle beam 400. Through the provision of the air outlet frame 300 and the middle beam 400, the overall air outlet grille 200 can be conveniently disassembled. In turn, the air outlet grille 200 can be disassembled from the machine body 100 together with the air outlet frame 300. The installation process can also be to preinstall the air outlet grille 200 to the air outlet frame 300, which facilitates the disassembly, cleaning and the like of the air outlet grille 200. Similarly, when the swing leaf assembly 210 includes a left swing leaf assembly 210 and a right swing leaf assembly 210, a middle vertical beam can be fixed in the middle of the air outlet frame 300, and the left swing leaf assembly 210 is installed between the left vertical beam and the middle vertical beam, and the right swing leaf assembly 210 is installed between the right vertical beam and the middle vertical beam.

[0043] According to the embodiments of the present application, the middle beam 400 is detachably installed in the air outlet frame 300. In this case, for the upper swing leaf assembly 211 and the lower swing leaf assembly 212, the middle beam 400 can be integrally disassembled. If it is desired to separately disassemble the upper swing leaf assembly 211 and the lower swing leaf assembly 212, two middle beams 400 can also be provided.

[0044] Referring to Figure 2 The two ends of the middle beam 400 are provided with fixing blocks 430, and the air outlet frame 300 is provided with fixing holes 330, and the fixing blocks 430 are fixed in the fixing holes 330. The cooperation between the fixing blocks 430 and the fixing holes 330 can facilitate the disassembly of the middle beam 400, and the structure is simple. The two sides of the fixing block 430 are inclined to form a guide surface 431, that is, the horizontal cross section of the fixing block 430 is similar to a trapezoidal structure, and the size of the side facing the fixing hole 430 is smaller, so as to facilitate the installation of the fixing block 430. In addition, Figure 2 The middle part of the middle beam 400 can be embedded into the fixing groove 340 to ensure the installation reliability.

[0045] Please refer to Figure 3 and Figure 4 in combination with Figure 2The top of the air outlet frame 300 is provided with a first open slot 311, the bottom of the air outlet frame 300 is provided with a second open slot 321, the upper surface of the middle crossbeam 400 is provided with a first pin shaft 410, the lower surface of the middle crossbeam 400 is provided with a second pin shaft 420, the top of the swing leaf 214 of the upper swing leaf assembly 211 is provided with a first rotating shaft 2111 which can be installed to the first open slot 311, the bottom of the swing leaf 214 of the upper swing leaf assembly 211 is provided with a first installation hole 2112 which rotates with the first pin shaft 410, the top of the swing leaf 214 of the lower swing leaf assembly 212 is provided with a second installation hole 2122 which rotates with the second pin shaft 420, and the bottom of the swing leaf 214 of the lower swing leaf assembly 212 is provided with a second rotating shaft 2121 which can be installed to the second open slot 321. That is, for the upper swing leaf assembly 211, during the installation process, the first pin shaft 410 is inserted into the first installation hole 2112 first, and then the swing leaf 214 is rotated so that the first rotating shaft 2111 is rotated into the first open slot 311. Thus, the two ends of the upper swing leaf assembly 211 are positioned by the cooperation of the first pin shaft 410 and the first installation hole 2112, and are fixed by the cooperation of the first rotating shaft 2111 and the first open slot 311, which is convenient for disassembly and assembly. Obviously, the positions of the first pin shaft 410 and the first installation hole 2112 can be exchanged, that is, the first pin shaft 410 is arranged at the bottom of the swing leaf 214 of the upper swing leaf assembly 211, and the first installation hole 2112 is arranged on the middle crossbeam 400; the positions of the first rotating shaft 2111 and the first open slot 311 can also be exchanged, that is, the first rotating shaft 2111 is arranged on the top crossbeam 310, and the first open slot 311 is arranged at the top of the swing leaf 214 of the upper swing leaf assembly 211. In addition, the first pin shaft 410 and the first installation hole 2112 can be arranged at the top of the upper swing leaf assembly 211, and the first rotating shaft 2111 and the first open slot 311 can be arranged at the bottom of the upper swing leaf assembly 211. For the lower swing leaf assembly 212, the positions of the second pin shaft 420, the second installation hole 2122, the second rotating shaft 2121 and the second open slot 321 are not limited by the current drawings, and the positions can also be exchanged.

[0046] The first rotating shaft 2111 and the first pin shaft 410 are coaxial to ensure that the swing leaf 214 of the upper swing leaf assembly 211 swings around the first rotating shaft 2111 and the first pin shaft 410 as the rotation center. Similarly, the second rotating shaft 2121 and the second pin shaft 420 are coaxial to ensure that the swing leaf 214 of the lower swing leaf assembly 212 swings around the second rotating shaft 2121 and the second pin shaft 420 as the rotation center.

[0047] Please refer to Figure 3 and Figure 4The first opening slot 311 and the second opening slot 321 are both provided with a guide section 3111 and a rotating section 3112, the first rotating shaft 2111 and the second rotating shaft 2121 both enter the rotating section 3112 along the guide section 3111 and are rotatably installed on the rotating section 3112. The guide section 3111 is in a converging shape towards the rotating section 3112, so as to facilitate the rotating shaft (the first rotating shaft 2111 or the second rotating shaft 2121) to enter the guide section 3111 through a wider opening and enter the rotating section 3112 under the action of the converging guide section 3111.

[0048] According to the embodiments of the present application, the plurality of swing leaf assemblies 210 can be driven by motors (refer to the first motor 500 and the second motor 600 in the following text), and of course, the manual possibility is not excluded. In the case that the swing leaf assemblies 210 are connected with the motors, different motors are generally used for the swing leaf assemblies 210 towards different directions, so as to ensure the independence of the different swing leaf assemblies 210. Different motors can be respectively provided with switches for being respectively controlled. In this case, the different swing leaf assemblies 210 can be independently opened, and then the user can select to open only part of the swing leaf assemblies 210. For example, in the space where only children exist, the parents can select to open only the swing leaf assemblies 210 below and not open the swing leaf assemblies at the top. Of course, one switch can control multiple motors, but at least part of the motors are out of phase, so as to ensure that the swing leaf assemblies 210 are towards different directions. Alternatively, when one switch controls multiple motors, the motors can also be in phase, and then the swing leaf assemblies can be ensured to be towards different directions through the transmission structure.

[0049] According to the embodiments of the present application, please refer to Figure 3 and Figure 4 , the tower fan includes a motor and a driving link 700 coupled with each other, the driving link 700 is provided with a third opening slot 720, the swing leaf 214 is provided with a connecting rod 213, the third opening slot 720 and the connecting rod 213 are one-to-one corresponding and rotatably matched, and the connecting rod 213 is different in shaft from the first rotating shaft 2111 or the second rotating shaft 2121. In the embodiments of the present application, one driving link 700 can drive all the swing leaves 214 of a group of swing leaf assemblies 210 to swing synchronously, and the structure is simple and stable, which is equivalent to forming a four-bar linkage mechanism among the swing leaf 214, the driving link 700 and the middle cross beam 400. In order to facilitate the assembly between the third opening slot 720 and the connecting rod 213, the third opening slot 720 can also include the guide section 3111 and the rotating section 3112.

[0050] Figure 1In the specific embodiment, the tower fan comprises a first motor 500 and a second motor 600, the driving link 700 comprises a first driving link and a second driving link, the first motor 500 is connected to the first driving link, the second motor 600 is connected to the second driving link, and the first driving link is arranged at the top of the upper blade assembly 211, and the second driving link is arranged at the bottom of the lower blade assembly 212. In this case, two motors are arranged at the upper and lower ends of the air outlet window 110 respectively, the two motors are far apart, the structural stability of the tower fan can be ensured as much as possible, and the noise of the motor can be effectively controlled.

[0051] Of course, one motor can be arranged to drive two blade assemblies 210 rotating in opposite directions in the specific embodiment. In this case, a reversing mechanism can be arranged at the output end of the motor, and then the motor can finally output two driving forces in opposite directions to drive the upper blade assembly 211 and the lower blade assembly 212 respectively. For example, the output shaft of the motor drives the driving link 700 of the upper blade assembly 211, the output shaft of the motor is coupled to the transmission shaft through a reversing gear assembly to ensure that the rotation directions of the transmission shaft and the output shaft are opposite, and the transmission shaft is connected to the driving link 700 of the lower blade assembly 212. Alternatively, the output shaft of the motor can be connected to the driving link 700 of the lower blade assembly 212, and the transmission shaft can be connected to the driving link 700 of the upper blade assembly 211.

[0052] In addition, the motor, the driving link 700 and the connecting rod 213 can be arranged at any position of the blade assembly 210 as long as the blade assembly 210 can be driven to swing through the connecting rod 213. For example, the first motor 500, the connecting rod 213 and the driving link 700 of the upper blade assembly 211 can be arranged at the middle or bottom of the upper blade assembly 211; the second motor 600, the connecting rod 213 and the driving link 700 of the lower blade assembly 212 can be arranged at the top or middle of the lower blade assembly 212.

[0053] According to the specific embodiment of the present application, in combination with Figure 5 and Figure 6 , the driving link 700 is formed with a lever 710, the lever 710 is provided with a mounting groove 711, the output end of the motor is connected with an eccentric wheel 800, and the eccentric wheel 800 cooperates with the inner surface of the mounting groove 711 to swing the driving link 700. With the rotation of the eccentric wheel 800, the surface of the eccentric wheel 800 and the inner surface of the mounting groove 711 are tangent at different positions to drive the driving link 700 to swing. For the upper blade assembly 211, the first pin shaft 410 and the first rotating shaft 2111 are used as the center of the swing in the swinging process, and the blade 214 of the upper blade assembly 211 can be better hidden in the air outlet frame 300 to ensure the appearance and safety in use. Similarly, for the lower blade assembly 212, the blade 214 will also be hidden in the air outlet frame 300 in the swinging process.

[0054] In combination Figure 5 And Figure 6 The motor and the driving link 700 are installed on the inner side of the air outlet frame 300, and can protect the motor and the driving link 700.

[0055] In addition to the structure of the eccentric wheel 800 and the installation groove 711, the embodiment of the application can also drive the swing leaf 214 in the structure of the crank rocker. The swing leaf 214 serves as a driven rod in the crank rocker and swings around the rotation center under the action of the driving rod.

[0056] In addition, it should be noted that the tower fan of the embodiment of the application can be used for refrigeration or for both cooling and heating.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the present application, and are not a limitation on the present application. Although the present application has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the scope of the claims of the present application.

Claims

1. A tower fan, characterized by, The application relates to an air outlet grille. The air outlet grille comprises a body (100) provided with an air outlet window (110), and an air outlet grille (200) installed on the air outlet window (110), wherein the air outlet grille (200) comprises at least two swing leaf assemblies (210), each of the swing leaf assemblies (210) comprises a plurality of swing leaves (214) extending along a vertical direction, the swing leaves (214) swing along a width direction of the air outlet window (110), and the swing leaves (214) in at least part of the swing leaf assemblies (210) are asynchronous in direction. The swing leaf assemblies (210) comprise an upper swing leaf assembly (211) and a lower swing leaf assembly (212), the air outlet window (110) is provided with an air outlet frame (300), the air outlet frame (300) comprises a top cross beam (310) and a bottom cross beam (320), a middle cross beam (400) is fixed in the middle of the air outlet frame (300), the upper swing leaf assembly (211) is installed between the top cross beam (310) and the middle cross beam (400), and the lower swing leaf assembly (212) is installed between the bottom cross beam (320) and the middle cross beam (400).

2. A tower according to claim 1, wherein The middle cross beam (400) is detachably installed on the air outlet frame (300).

3. A tower according to claim 2, wherein, Two ends of the middle cross beam (400) are provided with fixing blocks (430), the air outlet frame (300) is provided with fixing holes (330), and the fixing blocks (430) are fixed in the fixing holes (330).

4. A tower according to claim 2, wherein A first open slot (311) is arranged at the top of the air outlet frame (300), a second open slot (321) is arranged at the bottom of the air outlet frame (300), a first pin shaft (410) is arranged on the upper surface of the middle cross beam (400), a second pin shaft (420) is arranged on the lower surface of the middle cross beam (400), the top of the swing leaf (214) of the upper swing leaf assembly (211) is provided with a first rotating shaft (2111) which can be installed on the first open slot (311), the bottom of the swing leaf (214) of the upper swing leaf assembly (211) is provided with a first mounting hole (2112) which is rotationally matched with the first pin shaft (410), the top of the swing leaf (214) of the lower swing leaf assembly (212) is provided with a second mounting hole (2122) which is matched with the second pin shaft (420), and the bottom of the swing leaf (214) of the lower swing leaf assembly (212) is provided with a second rotating shaft (2121) which can be installed on the second open slot (321).

5. The tower-fan according to claim 2, wherein The first open slot (311) and the second open slot (321) are both provided with a guide section (3111) and a rotating section (3112), the first rotating shaft (2111) and the second rotating shaft (2121) both enter the rotating section (3112) along the guide section (3111) and are rotationally installed on the rotating section (3112).

6. A tower according to claim 5, wherein the tower is a tower fan. ​ 7. A tower-fan as claimed in claim 5 or 6, characterised in that, The tower fan comprises power-coupled motors and drive links (700), the drive links (700) are provided with third open grooves (720), the swing leaves (214) are provided with connecting rods (213), the third open grooves (720) and the connecting rods (213) are one-to-one corresponding and rotatable matched, wherein the connecting rods (213) are different in axis with the first rotating shafts (2111) or the second rotating shafts (2121).

8. A tower according to claim 7, wherein The tower fan comprises first motors (500) and second motors (600), the drive links (700) comprise first drive links and second drive links, the first motors (500) are connected with the first drive links, the second motors (600) are connected with the second drive links, the first drive links are arranged corresponding to the top of the upper swing leaf assemblies (211), and the second drive links are arranged corresponding to the bottom of the lower swing leaf assemblies (212).

9. A tower according to claim 7, wherein, The drive links (700) are provided with mounting grooves (711), the output ends of the motors are connected with eccentric wheels (800), the eccentric wheels (800) and the inner surfaces of the mounting grooves (711) are matched to swing the drive links (700).

10. A tower-fan according to any one of claims 2 to 6, wherein When the swing leaves (214) of the upper swing leaf assemblies (211) swing to the first limit angle of the air outlet window (110), the swing leaves (214) of the lower swing leaf assemblies (212) swing to the second limit angle of the air outlet window (110), and the first limit angle and the second limit angle are limit angles in opposite directions along the width direction of the air outlet window (110).

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