Bladeless fan

Abstract

The utility model discloses a bladeless fan, comprising a housing, a fan assembly, a purification module and a windshield device; the housing is provided with an air inlet, a first air outlet and a second air outlet, the first air outlet faces the front of the housing, and the second air outlet faces the top of the housing; the fan assembly is arranged in the housing; the purification module is arranged in the housing, and the purification module is used to purify the air flowing from the air inlet to the first air outlet and the second air outlet; the windshield device can be horizontally movably arranged in the housing to open or close the second air outlet. The technical solution of the utility model can meet the demand for large purification volume.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a bladeless fan. Background Art

[0002] Bladeless fans have been used in areas such as homes and offices, and have achieved the functions of blowing air to cool down and purify the air in the area.

[0003] In the related art, the existing bladeless fan only has an air outlet that is always open and faces the user, and has a weak purification capability and cannot meet the demand for large purification volumes. Utility Model Content

[0004] The main purpose of the utility model is to provide a bladeless fan, aiming to meet the demand for large purification volume.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a bladeless fan, comprising:

[0006] A shell body, provided with an air inlet, a first air outlet and a second air outlet, wherein the first air outlet faces the front of the shell body, and the second air outlet faces the top of the shell body;

[0007] A fan assembly is disposed in the housing;

[0008] a purification module, disposed in the housing, and configured to purify air flowing from the air inlet to the first air outlet and the second air outlet;

[0009] The wind shielding device is horizontally movably arranged on the shell to open or close the second air outlet.

[0010] In one embodiment of the utility model, the shell is provided with an air outlet duct connected to the air inlet, the air outlet duct connects the first air outlet and the second air outlet, and the wind shielding device can be horizontally movably arranged at one end of the air outlet duct close to the second air outlet to open or close the second air outlet.

[0011] In one embodiment of the utility model, the air outlet duct includes at least two sub-air ducts, the first air outlet includes at least two sub-air outlets, the second air outlet includes at least two sub-air outlets, and each of the sub-air ducts is connected to one of the sub-air outlets and one of the sub-air outlets;

[0012] The wind shielding device comprises at least two movable plates, each of which is horizontally movably arranged at one end of a branch air duct close to the corresponding sub-air outlet to open or close the sub-air outlet.

[0013] In an embodiment of the present utility model, the shell is provided with a mounting groove, and when the movable plate is in a condition of opening the sub-air outlet, the movable plate is at least partially located in the mounting groove.

[0014] In one embodiment of the utility model, the mounting groove is located between the two branch air ducts, and the mounting groove is provided with at least two openings. When the movable plate is in the condition of closing the sub-air outlet, each of the movable plates at least partially extends from one of the openings to the outside of the mounting groove and extends into one of the branch air ducts.

[0015] In one embodiment of the utility model, a sealing rib is provided on one side of the movable plate, the sealing rib is located in the installation groove, and when the movable plate is in a condition of closing the sub-air outlet, the sealing rib covers the opening.

[0016] In an embodiment of the present utility model, when the movable plates are in a condition of opening the sub-air outlets, the sealing ribs of the two movable plates abut against each other.

[0017] In one embodiment of the utility model, a positioning rib is provided on a side of the movable plate away from the installation groove, a positioning groove is provided on the side wall of the branch air duct, and when the movable plate is in a condition of closing the sub-air outlet, the positioning rib is located in the positioning groove.

[0018] In one embodiment of the present invention, the fan assembly comprises:

[0019] A motor, arranged in the housing;

[0020] A wind wheel, which is transmission-connected to the motor, and the motor drives the wind wheel to rotate;

[0021] The guide vanes are arranged on the air outlet side of the wind wheel, and are used to guide the air entering from the air inlet to the first air outlet and the second air outlet.

[0022] In an embodiment of the present invention, the fan assembly further includes a protective net, and the protective net is arranged on the wind inlet side of the wind wheel.

[0023] In the bladeless fan proposed in the utility model, a first air outlet and a second air outlet are arranged on the shell, wherein the first air outlet is a normally open air outlet. When a large amount of purification is required, the wind shield device can be moved horizontally to open the second air outlet, so that the first air outlet and the second air outlet can discharge air at the same time, thereby being able to meet the demand for a large amount of purification. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 This is a schematic structural diagram of an embodiment of a bladeless fan of the utility model;

[0026] Figure 2 This is a cross-sectional view of an embodiment of the bladeless fan of the utility model when the wind shielding device closes the second air outlet;

[0027] Figure 3 It is a partial cross-sectional view of an embodiment of the bladeless fan of the utility model when the wind shielding device closes the second air outlet;

[0028] Figure 4 It is a cross-sectional view of an embodiment of the bladeless fan of the utility model when the wind shielding device opens the second air outlet;

[0029] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0030] Figure 6 It is a partial structural schematic diagram of an embodiment of the bladeless fan of the utility model;

[0031] Figure 7 It is a structural schematic diagram of a wind shield device in one embodiment of the bladeless fan of the utility model.

[0032] Description of Figure Numbers:

[0033] Label name Label name 100 Bladeless fan 17 Air duct front shell 10 case 18 Air duct back shell 11 Air Inlet 20 Fan components 12 First air outlet 21 Motor 121 Air outlet 22 Wind wheel 13 Second air outlet 23 Guide vanes 131 Sub-vent 24 Protective net 14 Air outlet duct 30 Purification module 141 Air duct 40 Windshield 15 Mounting slot 41 Activity board 151 Opening 411 Sealing rib 16 Positioning slot 412 Positioning ribs

[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0038] The utility model provides a bladeless fan 100, aiming to meet the demand for large purification volume.

[0039] Combined with reference Figures 1 to 6 In one embodiment of the bladeless fan 100 of the utility model, the bladeless fan 100 includes a shell 10, a fan assembly 20, a fan assembly 20 and a purification module 30; the shell 10 is provided with an air inlet 11, a first air outlet 12 and a second air outlet 13, the first air outlet 12 faces the front of the shell 10, and the second air outlet 13 faces the top of the shell 10; the fan assembly 20 is arranged in the shell 10; the purification module 30 is arranged in the shell 10, and the purification module 30 is used to purify the air flowing from the air inlet 11 to the first air outlet 12 and the second air outlet 13; the wind shielding device 40 can be horizontally movably arranged on the shell 10 to open or close the second air outlet 13.

[0040] It can be understood that in the bladeless fan 100 proposed in the utility model, a first air outlet 12 and a second air outlet 13 are arranged on the shell 10, wherein the first air outlet 12 is a normally open air outlet. When a large amount of purification is required, the wind shielding device 40 can be moved horizontally to open the second air outlet 13, so that the first air outlet 12 and the second air outlet 13 can discharge air at the same time, thereby being able to meet the demand for a large amount of purification.

[0041] It should be noted that when it is necessary to achieve blowing air to cool down while ensuring a small purification effect, the second air outlet 13 can be closed by the wind shielding device 40. At this time, the bladeless fan 100 only opens the first air outlet 12 toward the front of the shell 10, and the second air outlet 13 toward the top of the shell 10 is in a closed state, thereby achieving blowing air to cool down while ensuring a small purification effect.

[0042] In this embodiment, when the fan assembly 20 is working, it can suck air from the outside into the interior of the shell 10 through the air inlet 11, and discharge the air from the first air outlet 12 and the second air outlet 13. During this process, the incoming air can be purified by the purification module 30 to reduce impurities in the air discharged from the first air outlet 12 and the second air outlet 13, so that the bladeless fan 100 can achieve the functions of blowing air to cool down and purifying the air.

[0043] It should be noted that the purification module 30 is an existing common air purification module 30, for example, it can be at least one of a water ion generating module and a negative ion generating module, which has a good air purification effect and will not be described in detail.

[0044] In some embodiments, in order to better support the purification module 30, a base can be provided at the bottom of the shell 10, and the base can at least partially extend from the bottom of the shell 10 into the interior of the shell 10. In this way, the purification module 30 can be installed on the base to effectively support the purification module 30 through the base, thereby improving the installation reliability of the purification module 30.

[0045] In actual application, the air inlet 11 can be specifically arranged at the front side, rear side, left side, right side, top, etc. of the housing 10. In some embodiments, in order to ensure aesthetics and air intake effect, the air inlet 11 can be arranged near the bottom of the housing 10, and a plurality of air inlets 11 can be spaced apart along the circumference of the housing 10.

[0046] In some embodiments, in order to ensure the purification effect of the purification module 30 on the air, the purification module 30 can be arranged on the inner side of the air inlet 11 and arranged around the circumference of the shell 10.

[0047] Optionally, see Figure 1 In some embodiments, since the bladeless fan 100 is usually placed on the ground for use, and the position where the user needs to cool down usually corresponds to the upper-middle position of the bladeless fan 100, the first air outlet 12 can be set close to the upper-middle part of the shell 10. Such a setting is not only beautiful, but also can ensure that the air discharged from the first air outlet 12 is better blown to the position where the user needs to cool down.

[0048] In actual application, the wind shielding device 40 can be driven manually or mechanically to move horizontally, so that the wind shielding device 40 can be switched between opening and closing the second air outlet 13 .

[0049] Optionally, see Figures 2 to 5 In one embodiment of the bladeless fan 100 of the utility model, the shell 10 is provided with an air outlet duct 14 connected to the air inlet 11, the air outlet duct 14 is connected to the first air outlet 12 and the second air outlet 13, and the wind shielding device 40 can be horizontally movably arranged at one end of the air outlet duct 14 close to the second air outlet 13 to open or close the second air outlet 13.

[0050] With such arrangement, the air entering from the air inlet 11 can first enter the air outlet duct 14 after being purified by the purification module 30, and then the air is guided to the first air outlet 12 and the second air outlet 13 through the air outlet duct 14, and the air is discharged from the first air outlet 12 and the second air outlet 13 to achieve a large purification effect. At the same time, by horizontally movably arranging the wind shield device 40 at one end of the air outlet duct 14 close to the second air outlet 13, that is, the wind shield device 40 is arranged in the air outlet duct 14, the wind shield device 40 can be installed in the air outlet duct 14 with a larger space, which makes the installation of the wind shield device 40 more convenient.

[0051] In some embodiments, the first air outlet 12 can be arranged in the vertical direction of the air outlet duct 14, so that the air discharged from the first air outlet 12 can be better blown to the position where the user needs to cool down. The second air outlet 13 can be arranged at the top of the air outlet duct 14, so that the air discharged from the second air outlet 13 can be smoothly blown toward the top of the housing 10.

[0052] Optionally, see Figures 2 to 7 In one embodiment of the bladeless fan 100 of the utility model, the air outlet duct 14 includes at least two branch air ducts 141, the second air outlet 13 includes at least two sub-air outlets 131, and the first air outlet 12 includes at least two branch air outlets 121, each branch air duct 141 connects a sub-air outlet 131 and a branch air outlet 121; the wind shielding device 40 includes at least two movable plates 41, each movable plate 41 can be horizontally movably arranged at one end of a branch air duct 141 close to the corresponding sub-air outlet 131 to open or close the sub-air outlet 131.

[0053] With such a configuration, by making the first air outlet 12 include at least two sub-air outlets 121, so that at least two sub-air outlets 121 blow air in the direction of the user, the area for blowing air to the user can be expanded to enhance the effect of blowing air and cooling off; and the second air outlet 13 includes at least two sub-air outlets 131, so that at least two sub-air outlets 131 face the top of the shell 10, so that the air outlet area of ​​the second air outlet 13 can be expanded to enhance the effect of a large purification volume; at the same time, by respectively controlling the opening and closing of at least two sub-air outlets 131 through at least two movable panels 41, only one of the sub-air outlets 131 can be opened, or all of the sub-air outlets 131 can be opened, which can enhance the flexibility of use and enhance the user's satisfaction.

[0054] In actual application, at least two movable plates 41 may be located on the same horizontal plane or on different horizontal planes. In some embodiments, in order to ensure the compactness of the structure, the two movable plates 41 may be arranged on the same horizontal plane. When the two movable plates 41 move toward each other, the two movable plates 41 may open the two sub-air vents 131 respectively. When the two movable plates 41 move in opposite directions, the two movable plates 41 may close the two sub-air vents 131 respectively.

[0055] In actual application, the movable plate 41 can be roughly a flat plate structure, or a roughly arc-shaped plate structure, or a roughly wavy plate structure, as long as it can open the corresponding sub-air vent 131 when it moves horizontally to the first position, and can close the corresponding sub-air vent 131 when it moves horizontally to the second position, and no specific limitation is made here.

[0056] In actual application, the cross-sectional shape of the movable plate 41 can be roughly semicircular, rectangular, triangular, etc., and can be specifically designed according to the inner contour of the corresponding sub-air duct 141. Moreover, the shapes and sizes of at least two movable plates 41 can be the same or different.

[0057] In some embodiments, a cavity with openings 151 on both sides may be provided in the middle of the upper half of the shell 10, so that the upper half of the shell 10 forms an annular frame, and at least two air outlets 121 may be symmetrically distributed on the left front and right front of the annular frame.

[0058] Optionally, see Figure 6 The shell 10 may include a bottom shell, a front shell 17 and a rear shell 18, wherein the fan assembly 20 and the purification module 30 are both arranged on the bottom shell, the front shell 17 and the rear shell 18 are the upper half of the shell 10, and the front shell 17 and the rear shell 18 are covered with each other to form at least two branch air ducts 141, at least two branch air outlets 121 and at least two sub-air outlets 131, and the front shell 17 and the rear shell 18 are both arranged on the top of the bottom shell.

[0059] Optionally, see Figure 3 , Figure 5 In one embodiment of the bladeless fan 100 of the present invention, the housing 10 is provided with a mounting groove 15 , and when the movable plate 41 is in a condition of opening the sub-air outlet 131 , the movable plate 41 is at least partially located in the mounting groove 15 .

[0060] With such arrangement, when the movable plate 41 moves horizontally to open the sub-air outlet 131, by making at least a portion of the movable plate 41 located in the mounting groove 15, the movable plate 41 can be at least partially accommodated in the mounting groove 15, which not only ensures the stability of the movable plate 41 in this state, but also effectively prevents the movable plate 41 from blocking the air from blowing from the branch air duct 141 to the corresponding sub-air outlet 131, so that the air can be discharged from the corresponding sub-air outlet 131.

[0061] In actual application, when the movable plate 41 is in the condition of opening the sub-air outlet 131, the movable plate 41 can be fully accommodated in the installation groove 15, and can also be partially accommodated in the installation groove 15, that is, the movable plate 41 can open the entire air outlet area corresponding to the sub-air outlet 131, and can also open a part of the air outlet area corresponding to the sub-air outlet 131.

[0062] In actual application, the mounting groove 15 may be located between two adjacent sub-air ducts 141 , or may be located at other positions inside the housing 10 , as long as the movable plate 41 can be accommodated.

[0063] Optionally, see Figure 3 , Figure 5 In one embodiment of the bladeless fan 100 of the utility model, the mounting slot 15 is located between the two sub-air ducts 141, and the mounting slot 15 is provided with at least two openings 151. When the movable plate 41 is in the condition of closing the sub-air outlet 131, each movable plate 41 at least partially extends from an opening 151 to the outside of the mounting slot 15 and extends into a sub-air duct 141.

[0064] In this way, by setting the installation groove 15 between the two branch air ducts 141, the compactness of the structure can be increased, the space inside the shell 10 can be fully utilized, and the air outlet effect of the branch air duct 141 will not be affected; at the same time, at least two openings 151 are provided in the installation groove 15, so that the movable plate 41 can extend from the corresponding opening 151 to the outside of the installation groove 15 and extend into the corresponding branch air duct 141 when the sub-air outlet 131 is closed, so as to close the branch air duct 141 and achieve a normal air outlet effect; and the movable plate 41 can be retracted from the corresponding opening 151 into the installation groove 15 when the sub-air outlet 131 is opened, and the corresponding branch air duct 141 is opened to achieve a large purification effect.

[0065] Optionally, see Figure 3 In one embodiment of the bladeless fan 100 of the utility model, a sealing rib 411 is provided on one side of the movable plate 41, and the sealing rib 411 is located in the mounting groove 15. When the movable plate 41 is in the condition of closing the sub-air outlet 131, the sealing rib 411 covers the opening 151.

[0066] In this way, by providing a sealing rib 411 on one side of the movable plate 41, the movable plate 41 can be covered on the corresponding opening 151 through the sealing rib 411 when it is horizontally moved to close the sub-air outlet 131, thereby preventing air from entering the mounting groove 15 from the opening 151 and affecting the air volume and air outlet efficiency of the second air outlet 13; at the same time, the setting of the sealing rib 411 can also prevent the movable plate 41 from completely falling out of the mounting groove 15 when it is horizontally moved to close the sub-air outlet 131, thereby ensuring the subsequent normal movement of the movable plate 41.

[0067] In some embodiments, the top surface of the sealing rib 411 protrudes from the top surface of the movable plate 41 to form an upper convex rib, and the bottom surface of the sealing rib 411 protrudes from the bottom surface of the movable plate 41 to form a lower convex rib. In this way, when the movable plate 41 is horizontally moved to close the sub-air outlet 131, the sealing rib 411 protruding from the top surface of the movable plate 41 and the upper and lower convex ribs protruding from the bottom surface of the movable plate 41 can both cover the opening 151 to improve the sealing performance of the covered opening 151.

[0068] Optionally, see Figure 5 In one embodiment of the bladeless fan 100 of the present invention, when the movable plate 41 is in the condition of opening the sub-air outlet 131 , the sealing ribs 411 of the two movable plates 41 abut against each other.

[0069] With such arrangement, when the movable plate 41 moves horizontally to open the corresponding sub-air vent 131, the two movable plates 41 can be limited by the mutual abutment of the two sealing ribs 411, so as to accurately position the two movable plates 41 at the position of opening the corresponding sub-air vent 131, thereby eliminating the need to additionally set up other structures to position the movable plates 41, thereby simplifying the structural design.

[0070] Optionally, see Figure 3 , Figure 5 , Figure 7 In one embodiment of the bladeless fan 100 of the utility model, a positioning rib 412 is provided on a side of the movable plate 41 away from the mounting groove 15, and a positioning groove 16 is provided on the side wall of the branch air duct 141. When the movable plate 41 is in the condition of closing the sub-air outlet 131, the positioning rib 412 is located in the positioning groove 16.

[0071] In this way, by providing a positioning rib 412 on the side of the movable plate 41 away from the installation groove 15, and providing a positioning groove 16 on the side wall of the branch air duct 141, when the movable plate 41 is horizontally moved to close the sub-air outlet 131, the positioning rib 412 of the movable plate 41 will be inserted into the positioning groove 16 to limit the movable plate 41, so that the movable plate 41 can be accurately positioned at the position of closing the corresponding sub-air outlet 131.

[0072] In some embodiments, in order to improve the positioning effect of the movable plate 41, the positioning groove 16 can be extended along the inner wall of the branch air duct 141, and the shape of the positioning rib 412 can match the inner wall contour of the branch air duct 141, so as to increase the matching strength between the positioning rib 412 and the positioning groove 16.

[0073] Optionally, see Figure 2 , Figure 4 In one embodiment of the bladeless fan 100 of the utility model, the fan assembly 20 includes a motor 21, a wind wheel 22 and a guide vane 23; the motor 21 is arranged on the housing 10; the wind wheel 22 is transmission-connected to the motor 21, and the motor 21 drives the wind wheel 22 to rotate; the guide vane 23 is arranged on the air outlet side of the wind wheel 22, and is used to guide the air entering from the air inlet 11 to the first air outlet 12 and the second air outlet 13.

[0074] With such an arrangement, when the motor 21 rotates, it can drive the wind wheel 22 to rotate. When the wind wheel 22 rotates, wind pressure is generated. The air inlet 11 can generate negative pressure toward the center side of the shell 10, so that the ambient air is sucked into the interior of the shell 10, and the incoming air is purified by the purification module 30. At the same time, positive pressure is generated at the first air outlet 12 and the second air outlet 13. The guide vane 23 can be used to adjust the direction of the wind blown out by the wind wheel 22, so that the air can be better guided to the first air outlet 12 and the second air outlet 13 under the guidance of the guide vane 23, so that the air inside the shell 10 is blown out from the first air outlet 12 and the second air outlet 13.

[0075] Optionally, see Figure 2 , Figure 4 In one embodiment of the bladeless fan 100 of the present invention, the fan assembly 20 further includes a protective net 24 , which is disposed on the air inlet side of the wind wheel 22 .

[0076] In this way, by providing a protective net 24 on the air inlet side of the wind wheel 22 , foreign matter in the air can be prevented from entering the wind wheel 22 and the motor 21 to cause damage to the wind wheel 22 and the motor 21 .

[0077] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A bladeless fan, characterized in that: include: A shell body, provided with an air inlet, a first air outlet and a second air outlet, wherein the first air outlet faces the front of the shell body, and the second air outlet faces the top of the shell body; A fan assembly is disposed in the housing; a purification module, disposed in the housing, and configured to purify air flowing from the air inlet to the first air outlet and the second air outlet; A wind shielding device, which is horizontally movably disposed on the housing to open or close the second air outlet; The housing is provided with an air outlet duct connected to the air inlet, the air outlet duct is connected to the first air outlet and the second air outlet, and the wind shielding device is horizontally movably provided at one end of the air outlet duct close to the second air outlet to open or close the second air outlet; The air outlet duct includes at least two branch air ducts, the first air outlet includes at least two branch air outlets, the second air outlet includes at least two sub-air outlets, each of the branch air ducts connects a sub-air outlet and a branch air outlet; the wind shielding device includes at least two movable plates, each of the movable plates can be horizontally movably arranged at one end of a branch air duct close to the corresponding sub-air outlet to open or close the sub-air outlet.

2. The bladeless fan according to claim 1, characterized in that: The shell is provided with a mounting groove, and when the movable plate is in a condition of opening the sub-air outlet, the movable plate is at least partially located in the mounting groove.

3. The bladeless fan according to claim 2, characterized in that: The installation groove is located between the two branch air ducts, and the installation groove is provided with at least two openings. When the movable plate is in the condition of closing the sub-air outlet, each movable plate at least partially extends from one of the openings to the outside of the installation groove and extends into one of the branch air ducts.

4. The bladeless fan according to claim 3, characterized in that: A sealing rib is provided on one side of the movable plate, and the sealing rib is located in the mounting groove. When the movable plate is in a condition of closing the sub-air outlet, the sealing rib covers the opening.

5. The bladeless fan according to claim 4, characterized in that: When the movable plate is in the condition of opening the sub-air outlet, the sealing ribs of the two movable plates abut against each other.

6. The bladeless fan according to claim 3, characterized in that: A positioning rib is provided on one side of the movable plate away from the mounting groove, a positioning groove is provided on the side wall of the branch air duct, and when the movable plate is in a condition of closing the sub-air outlet, the positioning rib is located in the positioning groove.

7. The bladeless fan according to any one of claims 1 to 6, characterized in that: The fan assembly comprises: A motor, arranged in the housing; A wind wheel, which is transmission-connected to the motor, and the motor drives the wind wheel to rotate; The guide vanes are arranged on the air outlet side of the wind wheel, and are used to guide the air entering from the air inlet to the first air outlet and the second air outlet.

8. The bladeless fan according to claim 7, characterized in that: The fan assembly also includes a protective net, which is arranged on the wind inlet side of the wind wheel.

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