Bladeless fan

Abstract

The utility model discloses a bladeless fan, comprising a housing, a fan assembly, a purification module, a first windshield device and a second windshield device; the housing is provided with an air inlet, a first air outlet, a second air outlet and an air outlet duct, the air outlet duct is connected with the air inlet and the first air outlet; 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 first windshield device can be movably arranged at the entrance of the air outlet duct to open or close the air outlet duct; the second windshield device can be movably arranged in the housing to open or close the second air outlet. The technical solution of the utility model can meet the large purification volume demand during purification.

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] Traditional bladeless fans have a small air output and cannot meet large purification volume requirements. 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 during purification.

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

[0006] A housing, provided with an air inlet, a first air outlet, a second air outlet and an air outlet duct, wherein the air outlet duct connects the air inlet and the first air outlet;

[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] A first wind shielding device is movably disposed at the entrance of the air outlet duct to open or close the air outlet duct;

[0010] The second wind shielding device is movably disposed on the shell to open or close the second air outlet.

[0011] In one embodiment of the utility model, the first air outlet includes at least two branch air outlets, the air outlet duct includes at least two branch air ducts, each of the branch air ducts is connected to the air inlet and one of the branch air outlets, and the first wind shielding device includes at least two wind shielding structures, each of the wind shielding structures is used to open or close one of the branch air ducts.

[0012] In one embodiment of the utility model, the first wind shielding device further comprises a first motor, and the first motor drives the two wind shielding structures to move, so that each wind shielding structure is used to open or close one of the branch air ducts.

[0013] In one embodiment of the utility model, the output shaft sleeve of the first motor is provided with a first gear; the wind shielding structure comprises:

[0014] a first rack meshing with the first gear, wherein two first racks are disposed on opposite sides of the first gear;

[0015] The first movable door is connected to the first rack. When the first motor drives the first gear to rotate, the two first racks drive the two first movable doors to move towards or in opposite directions, so that each of the first movable doors opens or closes one of the air distribution ducts.

[0016] In an embodiment of the present utility model, a first limiting groove is provided in the branch air duct, and the first movable door moves in the first limiting groove.

[0017] In one embodiment of the utility model, a first guide rib and / or a second guide rib are provided on a side of each of the first movable doors close to another first movable door, and the first guide rib and / or the second guide rib are used to guide air into corresponding sub-air ducts.

[0018] In an embodiment of the present utility model, a collector is provided in the shell, and the collector is arranged on the air inlet side of the fan assembly.

[0019] In an embodiment of the present invention, the second wind shielding device can be movably disposed on the collector to open or close the second air outlet.

[0020] In one embodiment of the present invention, the second wind shielding device comprises:

[0021] A driving unit, provided on the current collector;

[0022] The second movable door is transmission-connected to the driving unit, and the driving unit drives the second movable door to rise and fall, so that the second movable door opens or closes the second air outlet.

[0023] In an embodiment of the present utility model, the collector is provided with a second limiting groove, and the second movable door is lifted and lowered in the second limiting groove.

[0024] In one embodiment of the present invention, the driving unit comprises:

[0025] A second motor, disposed on the current collector;

[0026] A gear part, drivingly connected to the second motor, and the second motor drives the gear part to rotate;

[0027] The second rack is arranged on the second movable door and is spirally extended from bottom to top along the circumference of the second movable door. The second rack is meshed with the gear part.

[0028] In one embodiment of the utility model, the collector is provided with a limiting protrusion, the second movable door is provided with a track, the extension direction of the track is consistent with the extension direction of the second rack, and the track is spaced apart from the second rack, and the limiting protrusion is slidably matched with the track.

[0029] In one embodiment of the present invention, the gear portion comprises:

[0030] A second gear, transmission-connected to the second motor;

[0031] a lower gear meshing with the second gear;

[0032] A rotating shaft, one end of which is connected to the lower gear;

[0033] The upper gear is connected to one end of the rotating shaft away from the lower gear, and the second rack is meshed with the upper gear.

[0034] In one embodiment of the utility model, the end of the lower gear away from the rotating shaft is provided with a first limiting hole, the current collector is provided with a first limiting column, and the first limiting column is inserted into the first limiting hole;

[0035] And / or, a second limiting hole is provided at the end of the upper gear away from the rotating shaft, and the current collector is provided with a second limiting column, and the second limiting column is inserted into the second limiting hole.

[0036] In an embodiment of the present invention, the second air outlet is located in the radial direction of the wind wheel of the fan assembly.

[0037] In the bladeless fan proposed by the utility model, a first air outlet and a second air outlet are arranged on the shell, wherein the air outlet duct is connected to the air inlet and the first air outlet, and a first wind shield device for opening or closing the air outlet duct, and a second wind shield device for opening or closing the second air outlet are provided. In this way, in the purification mode, the air outlet duct can be opened by the first wind shield device, and the second air outlet can be opened by the second wind shield device, so that the first air outlet and the second air outlet can discharge air at the same time, realizing a large air outlet volume, and the wind speed is relatively low at this time, thereby being able to meet the demand for a large purification volume.

[0038] In the fan mode, the first air outlet can be closed by the first wind shielding device, and the second air outlet can be opened by the second wind shielding device, so that air can be discharged from the second air outlet to supply air over a long distance and realize the cooling function. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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.

[0040] Figure 1 This is a schematic structural diagram of an embodiment of a bladeless fan of the utility model;

[0041] Figure 2 This is a cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device closes the air outlet duct and the second wind shielding device closes the second air outlet;

[0042] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0043] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0044] Figure 5 This is a cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device closes the air outlet duct and the second wind shielding device opens the second air outlet;

[0045] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0046] Figure 7 This is a cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device opens the air outlet duct and the second wind shielding device closes the second air outlet;

[0047] Figure 8 for Figure 7 A partial enlarged view of point D in the middle;

[0048] Fig. 9 This is a planar cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device closes the air outlet duct;

[0049] Fig.10 This is a planar cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device opens the air outlet duct;

[0050] Fig.11 This is a three-dimensional cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device closes the air outlet duct;

[0051] Fig.12This is a three-dimensional cross-sectional view of an embodiment of the bladeless fan of the utility model when the first wind shielding device opens the air outlet duct;

[0052] Fig.13 This is a schematic structural diagram of a first wind shielding device in an embodiment of a bladeless fan of the utility model;

[0053] Fig.14 It is a partial structural schematic diagram of an embodiment of the bladeless fan of the utility model when the second wind shielding device opens the second air outlet;

[0054] Fig.15 It is a partial structural schematic diagram of an embodiment of the bladeless fan of the utility model when the second wind shielding device closes the second air outlet;

[0055] Fig.16 It is a partial structural schematic diagram of an embodiment of the bladeless fan of the utility model during the rising process of the second movable door;

[0056] Fig.17 This is a partial structural schematic diagram of an embodiment of the bladeless fan of the utility model when the second movable door rises to close the second air outlet.

[0057] Description of Figure Numbers:

[0058] Label name Label name 100 Bladeless fan 441 The first guide bar 10 case 442 The second guide bar 11 Air Inlet 50 Second windshield device 12 First air outlet 51 Drive unit 121 Air outlet 511 Second motor 13 Second air outlet 512 Gear Department 14 Air outlet duct 5121 Second gear 141 Air duct 5122 Lower gear 142 The first limit slot 5122a The first limit hole 20 Fan components 5123 Shaft 21 The third motor 5124 Upper gear 22 Wind wheel 5124a The second limiting hole 23 Guide vanes 513 Second rack 24 Protective net 52 Second movable door 30 Purification module 521 track 40 First windshield device 60 Current collector 40a Wind blocking structure 61 The second limit slot 41 First Motor 62 Limiting protrusion 42 First Gear 63 The first limit column 43 First rack 64 The second limit column 44 First movable door

[0059] 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

[0060] 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.

[0061] 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.

[0062] 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.

[0063] The utility model provides a bladeless fan 100, which aims to achieve the function of not blowing air toward a user during purification.

[0064] Combined with reference Figures 1 to 8 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 purification module 30, a first wind shield device 40 and a second wind shield device 50; the shell 10 is provided with an air inlet 11, a first air outlet 12, a second air outlet 13 and an air outlet duct 14, and the air outlet duct 14 connects the air inlet 11 and the first air outlet 12; 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 first wind shield device 40 can be movably arranged at the entrance of the air outlet duct 14 to open or close the air outlet duct 14; the second wind shield device 50 can be movably arranged in the shell 10 to open or close the second air outlet 13.

[0065] It can be understood that in the bladeless fan 100 proposed by the utility model, a first air outlet 12 and a second air outlet 13 are arranged on the shell 10, wherein the air outlet duct 14 connects the air inlet 11 and the first air outlet 12, and is provided with a first wind shield device 40 for opening or closing the air outlet duct 14, and a second wind shield device 50 for opening or closing the second air outlet 13. In this way, in the purification mode, the air outlet duct 14 can be opened by the first wind shield device 40, and the second air outlet 13 can be opened by the second wind shield device 50, 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 purification volume.

[0066] In the fan mode, the first air outlet 12 can be closed by the first wind shielding device 40, and the second air outlet 13 can be opened by the second wind shielding device 50, so that the second air outlet 13 can discharge air to supply air over a long distance and realize the cooling function.

[0067] In addition, when the first air outlet 14 is opened, the airflow can be discharged from the narrow first air outlet 12 at the front side after passing through the air outlet duct 14, so that long-distance high-speed blowing can be achieved.

[0068] Furthermore, when it is necessary to achieve a small purification effect while enjoying the cool breeze, the first air outlet 12 can be opened through the first wind shield device 40, and the second air outlet 13 can be closed through the second wind shield device 50. At this time, the bladeless fan 100 only opens the first air outlet 12, and the second air outlet 13 is in a closed state, so that a small purification effect can be achieved while enjoying the cool breeze.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] In actual application, the first air outlet 12 can also be specifically set at the front side, rear side, left side, right side, top and other positions of the shell 10; similarly, the second air outlet 13 can also be specifically set at the front side, rear side, left side, right side, top and other positions of the shell 10.

[0075] In some embodiments, in order to meet the demand for a larger purification volume, a plurality of second air outlets 13 may be distributed at intervals along the circumference of the shell 10 . For example, the second air outlets 13 may be arranged near the middle and lower part of the shell 10 .

[0076] In actual application, the first windshield device 40 can be moved by rotation, horizontal movement, lifting, etc. to open or close the air outlet duct 14, thereby opening and closing the first air outlet 12. Specifically, the first windshield device 40 can also be driven manually or mechanically to move.

[0077] In actual application, the second windshield device 50 can also be moved by rotation, horizontal movement, lifting, etc. to open or close the second air outlet 13. Specifically, the second windshield device 50 can be driven manually or mechanically.

[0078] 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 middle and upper part of the bladeless fan 100, by setting the first air outlet 12 above the second air outlet 13, the first air outlet 12 can be set close to the middle and upper part of the shell 10, and the second air outlet 13 can be set close to the middle and lower 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, and ensure that the air discharged from the second air outlet 13 will not blow to the position where the user needs to cool down, thereby realizing the function of not blowing air to the user during purification.

[0079] Optionally, see Figure 1 , Figure 2 , Figure 4 , Figure 5 In one embodiment of the bladeless fan 100 of the utility model, the first air outlet 12 includes at least two branch air outlets 121, the air outlet duct 14 includes at least two branch air outlets 141, each branch air outlet 141 connects the air inlet 11 and a branch air outlet 121, and the first wind shielding device 40 includes at least two wind shielding structures 40a, each wind shielding structure 40a is used to open or close a branch air outlet 141.

[0080] With such a configuration, by making the first air outlet 12 include at least two branch air outlets 121, so that at least two branch 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 down; at the same time, by respectively controlling the opening and closing of at least two branch air ducts 141 through at least two wind shielding structures 40a, only one of the branch air ducts 141 can be opened so that only one of the branch air outlets 121 can discharge air, or all of the branch air ducts 141 can be opened so that all of the branch air outlets 121 can discharge air, thereby enhancing the flexibility of use and user satisfaction.

[0081] In some embodiments, a cavity with openings 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.

[0082] Optionally, see Figure 4 , Figures 8 to 12 In one embodiment of the bladeless fan 100 of the present invention, the first wind shielding device 40 further includes a first motor 41, and the first motor 41 drives the two wind shielding structures 40a to move, so that each wind shielding structure 40a is used to open or close a branch air duct 141.

[0083] With such an arrangement, two wind shield structures 40a can be driven to move simultaneously by a first motor 41 to achieve the function of simultaneously opening two branch air ducts 141 or simultaneously closing two branch air ducts 141, which can reduce the number of drive motors used and thus achieve the purpose of reducing costs.

[0084] In actual application, the first motor 41 can simultaneously drive the two wind shielding structures 40a to open or close the corresponding branch air ducts 141 in a rotational manner, and can also simultaneously drive the two wind shielding structures 40a to open or close the corresponding branch air ducts 141 in a horizontal movement manner.

[0085] Optionally, see Figures 9 to 13 In one embodiment of the bladeless fan 100 of the utility model, the output shaft sleeve of the first motor 41 is provided with a first gear 42; the wind shielding structure 40a includes a first rack 43 and a first movable door 44; the first rack 43 is meshed with the first gear 42, and the two first racks 43 are arranged on opposite sides of the first gear 42; the first movable door 44 is connected to the first rack 43, and when the first motor 41 drives the first gear 42 to rotate, the two first racks 43 drive the two first movable doors 44 to move towards or in opposite directions, so that each first movable door 44 opens or closes a branch air duct 141.

[0086] With such arrangement, when the second motor 511 rotates, it can drive the second gear 5121 to rotate, and the rotating lower shell of the second gear 5121 synchronously drives the two first racks 43 to move horizontally, so as to drive the two first movable doors 44 to move in opposite directions or toward each other through the two first racks 43, so that the two first movable doors 44 can be driven to move horizontally synchronously more smoothly; when the two first movable doors 44 move toward each other, the two branch air ducts 141 can be opened at the same time, and at this time, the two branch air outlets 121 can discharge air at the same time; when the first movable doors 44 move in opposite directions, the two branch air ducts 141 can be closed at the same time, and at this time, the two branch air outlets 121 do not discharge air.

[0087] Optionally, see Figure 4 , Figure 8 In one embodiment of the bladeless fan 100 of the present invention, a first limiting groove 142 is provided in the air duct 141 , and the first movable door 44 moves in the first limiting groove 142 .

[0088] With such arrangement, by making the first movable door 44 rotate in the first limiting groove 142 , the stability of the first movable door 44 during horizontal movement can be improved, and the position displacement of the first movable door 44 during horizontal movement can be prevented.

[0089] Optionally, see Fig. 9 , Fig.10 , Fig.13 In one embodiment of the bladeless fan 100 of the present invention, a first guide rib 441 and / or a second guide rib 442 is provided on a side of each first movable door 44 close to another first movable door 44, and the first guide rib 441 and / or the second guide rib 442 are used to guide air into the corresponding branch air duct 141.

[0090] With such arrangement, when the first movable door 44 is in the condition of opening the corresponding sub-air duct 141 , the air can be better guided to the corresponding sub-air duct 141 through the first guide rib 441 and / or the second guide rib 442 .

[0091] In some embodiments, when the first movable door 44 is provided with a first guide rib 441 and a second guide rib 442 , the first guide rib 441 and the second guide rib 442 may be disposed on two opposite sides of the first movable door 44 .

[0092] Optionally, see Figure 2 , Figure 3 , Figures 5 to 7 In one embodiment of the bladeless fan 100 of the present invention, a collector 60 is provided in the housing 10 , and the collector 60 is provided on the air inlet side of the fan assembly 20 .

[0093] In this way, the collector 60 can be set so that the air entering from the air inlet 11 can be quickly collected to the fan assembly 20, so that the air can be quickly discharged to the air outlet duct 14 and the second air outlet 13 under the power of the fan assembly 20, which can reduce the loss of airflow.

[0094] In some embodiments, the collector 60 is arranged between the purification module 30 and the fan assembly 20, so that the air entering from the air inlet 11 can first be purified by the purification module 30, and the purified air then flows to the fan assembly 20 through the collector 60. This can prevent air with impurities from contaminating the collector 60 and the fan assembly 20, and can reduce the subsequent cleaning and maintenance costs.

[0095] In some embodiments, to facilitate maintenance of the collector 60, the collector 60 can be detachably mounted in the housing 10 by means of screws, buckles, etc. Similarly, to facilitate maintenance of the fan assembly 20, the fan assembly 20 can also be detachably mounted in the housing 10 by means of screws, buckles, etc.

[0096] Optionally, see Figure 2 , Figure 3 , Figures 5 to 7 In one embodiment of the bladeless fan 100 of the present invention, the second wind shielding device 50 can be movably disposed on the collector 60 to open or close the second air outlet 13.

[0097] In this configuration, by making the second windshield device 50 movably mounted on the collector 60, during the assembly process, the second windshield device 50 can be first mounted on the collector 60, and then the collector 60 and the second windshield device 50 can be mounted together in the housing 10, which makes it easier to install the second windshield device 50. At the same time, the collector 60 can effectively support the second windshield device 50, which can improve the installation reliability of the second windshield device 50.

[0098] Optionally, see Figures 14 to 17 In one embodiment of the bladeless fan 100 of the utility model, the second wind shielding device 50 includes a driving part 51 and a second movable door 52; the driving part 51 is arranged on the collector 60; the second movable door 52 is transmission-connected to the driving part 51, and the driving part 51 drives the second movable door 52 to rise and fall, so that the second movable door 52 opens or closes the second air outlet 13.

[0099] With such arrangement, when the second air outlet 13 needs to be closed, the second movable door 52 can be driven to rise to the third position by the driving unit 51, at which time the second movable door 52 will be located inside the second air outlet 13 to block the second air outlet 13, thereby playing the role of closing the second air outlet 13; and when the second air outlet 13 needs to be opened, the second movable door 52 can be driven to fall to the fourth position by the driving unit 51, at which time the second movable door 52 will be staggered with the second air outlet 13 in the height direction of the housing 10, thereby playing the role of opening the second air outlet 13. In addition, in order to meet the demand for a large purification volume, a plurality of second air outlets 13 are usually distributed at intervals in the circumferential direction of the housing 10, so the driving unit 51 is used to drive the second movable door 52 to rise and fall, so that the second movable door 52 can open a plurality of second air outlets 13 at one time or close a plurality of second air outlets 13 at one time.

[0100] In actual application, the driving unit 51 can be directly a linear motor to directly drive the second movable door 52 to rise and fall through the linear motor; or, the driving unit 51 can be a structure in which a rotary motor cooperates with a gear rack, or a structure in which a rotary motor cooperates with a screw nut, both of which can drive the second movable door 52 to switch between the third position and the fourth position to open or close the second air outlet 13.

[0101] In actual application, the second movable door 52 can be a flat plate structure or an arc plate structure, and can be designed according to the shape of the shell 10 .

[0102] Optionally, see Figure 3 , Figure 6 In one embodiment of the bladeless fan 100 of the present invention, the collector 60 is provided with a second limiting groove 61, and the second movable door 52 is lifted and lowered in the second limiting groove 61.

[0103] With such arrangement, by making the second movable door 52 rise and fall in the second limiting groove 61 of the collector 60 , the stability of the second movable door 52 during the rising and falling process can be improved, and the position displacement of the second movable door 52 during the rising and falling process can be prevented.

[0104] It should be noted that the notch of the second limiting groove 61 is set toward the top of the collector 60. When the second movable door 52 is in the condition of opening the second air outlet 13, the second movable door 52 can be completely accommodated in the second limiting groove 61. When the second air outlet 13 needs to be closed, the driving unit 51 can drive the second movable door 52 to rise, so that at least part of the second movable door 52 extends from the notch of the second limiting groove 61 to outside the second limiting groove 61, so as to achieve the effect of closing the second air outlet 13.

[0105] Optionally, see Figures 14 to 17In one embodiment of the bladeless fan 100 of the utility model, the driving part 51 includes a second motor 511, a gear part 512 and a second rack 513; the second motor 511 is arranged on the collector 60; the gear part 512 is transmission-connected to the second motor 511, and the second motor 511 drives the gear part 512 to rotate; the second rack 513 is arranged on the second movable door 52, and is spirally extended from bottom to top along the circumference of the second movable door 52, and the second rack 513 is meshed with the gear part 512.

[0106] With such arrangement, when the second motor 511 rotates, it can drive the gear part 512 to rotate. With the cooperation of the gear part 512 and the rack, it can drive the second movable door 52 to achieve lifting and lowering while rotating, that is, it can drive the second movable door 52 to achieve spiral lifting. Compared with the linear lifting method, the second movable door 52 can be lifted and lowered more smoothly.

[0107] It should be noted that the gear portion 512 includes but is not limited to a gear structure, as long as it can be connected to the second motor 511 and mesh with the rack.

[0108] Optionally, see Fig.17 In one embodiment of the bladeless fan 100 of the utility model, the collector 60 is provided with a limiting protrusion 62, and the second movable door 52 is provided with a track 521. The extension direction of the track 521 is consistent with the extension direction of the second rack 513, and the track 521 is spaced apart from the second rack 513. The limiting protrusion 62 slides with the track 521.

[0109] With such arrangement, when the second movable door 52 is driven to perform spiral lifting and lowering under the cooperation of the second motor 511, the gear part 512 and the rack, the limiting protrusion 62 on the collector 60 can slidably cooperate with the track 521 on the second movable door 52, that is, the second movable door 52 can be limited under the cooperation of the limiting protrusion 62 and the track 521, which can improve the stability of the second movable door 52 during the spiral lifting and lowering process.

[0110] In actual application, the limiting protrusion 62 can be a protrusion structure such as a convex point or a convex block.

[0111] In some embodiments, in order to enable the second movable door 52 to stay in the state of opening the second air outlet 13 more stably during the lifting process, a first positioning groove can be provided at the top of the track 521, and the first positioning groove is connected to the track 521. In this way, when the second movable door 52 is in the condition of opening the second air outlet 13, the limiting protrusion 62 can be inserted into the first positioning groove, so that the second movable door 52 can stay in the state of opening the second air outlet 13 more stably.

[0112] Similarly, in order to enable the second movable door 52 to stay in the state of closing the second air outlet 13 more stably during the lifting process, a second positioning groove can be provided at the bottom of the track 521, and the second positioning groove is connected to the track 521. In this way, when the second movable door 52 is in the condition of closing the second air outlet 13, the limiting protrusion 62 can be inserted into the second positioning groove, so that the second movable door 52 can stay in the state of closing the second air outlet 13 more stably.

[0113] Optionally, see Figures 14 to 17 In one embodiment of the bladeless fan 100 of the present invention, the gear portion 512 includes a second gear 5121, a lower gear 5122, a rotating shaft 5123 and an upper gear 5124; the second gear 5121 is transmission-connected to the second motor 511; the lower gear 5122 is meshed with the second gear 5121; one end of the rotating shaft 5123 is connected to the lower gear 5122; the upper gear 5124 is connected to one end of the rotating shaft 5123 away from the lower gear 5122, and the second rack 513 is meshed with the upper gear 5124.

[0114] With such arrangement, when the second motor 511 rotates, it can drive the second gear 5121 to rotate. The rotation of the second gear 5121 can drive the lower gear 5122, the rotating shaft 5123 and the upper gear 5124 to rotate synchronously. Finally, the second movable door 52 is driven to spirally rise and fall through the engagement of the upper gear 5124 with the rack. In this way, the second motor 511 can be installed below the second movable door 52, making the distribution of the overall structure more compact, and being able to make full use of the space inside the shell 10, thereby reducing the volume of the bladeless fan 100.

[0115] In some embodiments, the second gear 5121 may be directly sleeved on the output shaft of the motor, so that the second motor 511 can smoothly drive the second gear 5121 to rotate.

[0116] In some embodiments, in order to ensure the inherent strength of the rotating shaft 5123, reinforcing ribs may be provided on the outer axial surface of the rotating shaft 5123, so as to improve the strength of the rotating shaft 5123 through the reinforcing ribs and reduce the risk of deformation or even breakage of the rotating shaft 5123.

[0117] In some embodiments, the rotating shaft 5123 and the lower gear 5122 and the upper gear 5124 can be an integrally formed structure, which can not only ensure the connection strength between the rotating shaft 5123 and the lower gear 5122 and the upper gear 5124, but also simplify the preparation process.

[0118] Optionally, see Fig.16In one embodiment of the bladeless fan 100 of the present invention, a first limiting hole 5122a is provided at the end of the lower gear 5122 away from the rotating shaft 5123, and the collector 60 is provided with a first limiting column 63, which is inserted into the first limiting hole 5122a.

[0119] With such arrangement, during the synchronous rotation of the lower gear 5122, the rotating shaft 5123 and the upper gear 5124, the lower gear 5122 can be limited by the cooperation of the first limiting column 63 and the first limiting hole 5122a to improve the stability of the lower gear 5122, the rotating shaft 5123 and the upper gear 5124 during the rotation process.

[0120] Optionally, see Fig.16 In one embodiment of the bladeless fan 100 of the present invention, a second limiting hole 5124a is provided at the end of the upper gear 5124 away from the rotating shaft 5123, and the collector 60 is provided with a second limiting column 64, which is inserted into the second limiting hole 5124a.

[0121] With such arrangement, during the synchronous rotation of the lower gear 5122, the rotating shaft 5123 and the upper gear 5124, the upper gear 5124 can also be limited with the cooperation of the second limiting column 64 and the second limiting hole 5124a, which can also improve the stability of the lower gear 5122, the rotating shaft 5123 and the upper gear 5124 during the rotation process.

[0122] Optionally, see Figure 2 , Figure 5 In one embodiment of the bladeless fan 100 of the present invention, the fan assembly 20 is provided with a wind wheel 22 , and the second air outlet 13 is arranged close to the wind wheel 22 .

[0123] In this way, by arranging the second air outlet 13 close to the wind wheel 22, the airflow loss of the air discharged from the second air outlet 13 can be reduced, which can better meet the demand for a large purification volume.

[0124] It should be noted that the second air outlet 13 is disposed close to the wind wheel 22 , which specifically means that the distance between the second air outlet 13 and the wind wheel 22 is less than or equal to 10 mm.

[0125] In actual application, the second air outlet 13 may be provided corresponding to the wind wheel 22 , or may be located obliquely above or below the wind wheel 22 .

[0126] Optionally, see Figure 2 , Figure 5 In one embodiment of the bladeless fan 100 of the present invention, the second air outlet 13 is located in the radial direction of the wind wheel 22 .

[0127] In this way, by setting the second air outlet 13 in the radial direction of the wind wheel 22, the air sucked in by the wind wheel 22 during rotation can be discharged from the first air outlet 12 more quickly, so that the airflow loss of the air discharged from the second air outlet 13 is smaller, which can better meet the demand for large purification volume.

[0128] In some embodiments, since the wind wheel 22 has a certain axial height, in order to meet the demand for a larger purification amount, a plurality of second air outlets 13 may be distributed at intervals along the axial height of the wind wheel 22 .

[0129] Optionally, see Figure 2 and Figure 5 In some embodiments, the fan assembly 20 may also include a third motor 21 and a guide vane 23, the motor is arranged inside the housing 10; the wind wheel 22 is transmission-connected to the motor, and the motor drives the wind wheel 22 to rotate; the guide vane 23 is arranged on the air outlet side of the wind wheel 22, and the guide vane 23 is used to guide the air entering from the air inlet 11 to the air outlet duct 14 and the second air outlet 13.

[0130] With such arrangement, the third motor 21 can drive the wind wheel 22 to rotate when it rotates, and wind pressure is generated when the wind wheel 22 rotates. 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 air outlet duct 14 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 air outlet duct 14 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.

[0131] Optionally, see Figure 2 and Figure 5 In some embodiments, the fan assembly 20 further includes a protective net 24 , which is disposed on the wind inlet side of the wind wheel 22 .

[0132] 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 third motor 21 to cause damage to the wind wheel 22 and the third motor 21 .

[0133] 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 housing, provided with an air inlet, a first air outlet, a second air outlet and an air outlet duct, wherein the air outlet duct connects the air inlet and the first air outlet; 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 first wind shielding device is movably disposed at the entrance of the air outlet duct to open or close the air outlet duct; A second wind shielding device is movably disposed on the housing to open or close the second air outlet; The first air outlet includes at least two branch air outlets, the air outlet duct includes at least two branch air ducts, each branch air duct is connected to the air inlet and one of the branch air outlets, and the first wind shielding device includes at least two wind shielding structures, each of the wind shielding structures is used to open or close one of the branch air ducts.

2. The bladeless fan according to claim 1, characterized in that: The first windshield device also includes a first motor, which drives the two windshield structures to move, so that each windshield structure is used to open or close one of the branch air ducts.

3. The bladeless fan according to claim 2, characterized in that: The output shaft sleeve of the first motor is provided with a first gear; the wind shielding structure comprises: a first rack meshing with the first gear, wherein two first racks are disposed on opposite sides of the first gear; The first movable door is connected to the first rack. When the first motor drives the first gear to rotate, the two first racks drive the two first movable doors to move towards or in opposite directions, so that each of the first movable doors opens or closes one of the air distribution ducts.

4. The bladeless fan according to claim 3, characterized in that: A first limiting groove is provided in the branch air duct, and the first movable door moves in the first limiting groove.

5. The bladeless fan according to claim 3, characterized in that: A first guide rib and / or a second guide rib are provided on a side of each of the first movable doors close to another first movable door, and the first guide rib and / or the second guide rib are used to guide air into the corresponding sub-air duct.

6. The bladeless fan according to any one of claims 1 to 5, characterized in that: A collector is arranged in the shell, and the collector is arranged on the air inlet side of the fan assembly.

7. The bladeless fan according to claim 6, characterized in that: The second wind shielding device can be movably arranged on the collector to open or close the second air outlet.

8. The bladeless fan according to claim 7, characterized in that: The second wind shielding device comprises: A driving unit, provided on the current collector; The second movable door is transmission-connected to the driving unit, and the driving unit drives the second movable door to rise and fall, so that the second movable door opens or closes the second air outlet.

9. The bladeless fan according to claim 8, characterized in that: The current collector is provided with a second limiting groove, and the second movable door is lifted and lowered in the second limiting groove.

10. The bladeless fan according to claim 8, characterized in that: The driving unit comprises: A second motor, disposed on the current collector; A gear part, drivingly connected to the second motor, and the second motor drives the gear part to rotate; The second rack is arranged on the second movable door and is spirally extended from bottom to top along the circumference of the second movable door. The second rack is meshed with the gear part.

11. The bladeless fan according to claim 10, characterized in that: The collector is provided with a limiting protrusion, the second movable door is provided with a track, the extension direction of the track is consistent with the extension direction of the second rack, and the track is spaced from the second rack, and the limiting protrusion is slidably matched with the track.

12. The bladeless fan according to claim 10, characterized in that: The gear unit comprises: A second gear, transmission-connected to the second motor; a lower gear meshing with the second gear; A rotating shaft, one end of which is connected to the lower gear; The upper gear is connected to one end of the rotating shaft away from the lower gear, and the second rack is meshed with the upper gear.

13. The bladeless fan according to claim 12, wherein: The end of the lower gear away from the rotating shaft is provided with a first limiting hole, the current collector is provided with a first limiting column, and the first limiting column is inserted into the first limiting hole; And / or, a second limiting hole is provided at the end of the upper gear away from the rotating shaft, and the current collector is provided with a second limiting column, and the second limiting column is inserted into the second limiting hole.

14. The bladeless fan according to any one of claims 1 to 5, characterized in that: The second air outlet is located in the radial direction of the wind wheel of the fan assembly.

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