Fan

Abstract

The present invention provides a fan, comprising: a body portion including an air inlet, an air outlet, and a fan motor assembly for generating an air flow, the air flow passing through the body portion in a first direction; and a nozzle connected to the air outlet for receiving the air flow from the body portion and emitting the air flow. As the air flow enters the nozzle, the air flow moves at least based on a second direction opposite to the first direction and is then emitted from the nozzle. The present invention can change the movement direction of the air flow in the fan, reduce the overall height of the fan, reduce the overall volume, extend the service life of the filter screen, and reduce the use cost.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning equipment, in particular to a fan. Background Art

[0002] With the continuous improvement of living and technological levels, people's requirements for quality of life are increasing. Indoor air quality has become an important issue of concern to people, and people's demand for air purifiers is also increasing.

[0003] Air purifiers are small household appliances used to purify indoor air, mainly to solve indoor air pollution problems caused by decoration or other reasons. Since the release of pollutants in indoor air is persistent and uncertain, using air purifiers to purify indoor air is an internationally recognized method to improve indoor air quality. There are many different technologies and media in air purifiers, which enable it to provide clean and safe air to users. Commonly used air purification technologies include: low-temperature asymmetric plasma air purification technology, adsorption technology, negative ion technology, negative oxygen ion technology, molecular complexation technology, nano-TiO2 technology, HEPA high-efficiency filtration technology, electrostatic dust collection technology, active oxygen technology, etc.; material technologies mainly include: photocatalyst, activated carbon, synthetic fiber, HEPA high-efficiency material, etc. The cost of high-quality filters will account for 20% to 30% of the total cost of air purifiers.

[0004] At present, there are many bladeless fans with air filters. Figure 1 FIG. 4 is a cross-sectional view of a bladeless fan in the prior art. Figure 1 As shown, most of them have an annular nozzle 901, a housing 903, a bottom 904, a filter 905, a fan motor 906 and a mesh liner 907. Among them, the housing 903 with an air inlet mesh is arranged on the bottom 904, the housing 903 is provided with a filter 905, the filter 905 is provided with a mesh liner 907, the mesh liner 907 is provided with a first air inlet of the fan motor 906, and the annular nozzle 901 is arranged above the gravity direction of the fan motor 906, and the air outlet of the fan motor 906 is connected to the annular nozzle 901. The indoor air passes through the mesh of the housing 903 and the filter 905 in turn and then enters the mesh liner 907. The air inlet of the fan motor 906 inhales the air in the anti-gravity direction and then continues to transport it to one end of the annular nozzle 901 in the anti-gravity direction (vertically upward), and then the air is spread to various places of the annular nozzle 901 and then ejected.

[0005] There are at least the following technical problems in this structure that need to be improved:

[0006] (1) Since the annular nozzle, which has the largest overall volume of the bladeless fan, and the fan motor must be arranged at different height positions in the direction of gravity, it is difficult to reduce the overall height of the bladeless fan, greatly limiting the usage scenarios of the bladeless fan.

[0007] (2) The middle of the annular nozzle is hollow, and this area is not fully utilized, resulting in a waste of the overall volume of the fan and an increase in the costs of product transportation and product storage.

[0008] (3) Since the air inlet position of the fan motor is relatively low, it is easier to inhale dust on the ground during suction, increasing the usage load of the filter screen and requiring more frequent replacement of the filter screen, significantly increasing the usage cost of the bladeless fan.

[0009] (4) The casing of this type of bladeless fan is a structure where two casings are horizontally joined together, and each casing is provided with a filter screen. The filter screen is sealed between the mesh inner liner and the three-dimensional sealing rubber strip arranged downstream. The cost of the three-dimensional sealing rubber strip is extremely high, and the sealing effect is poor after long-term use.

[0010] (5) When replacing the filter screen, it is necessary to separately disassemble the two casings, replace the filter screens respectively, and then install them back. The process is cumbersome and the user experience is poor.

[0011] (6) It is difficult to add other functional modules to the product, and the expandability is poor.

[0012] Therefore, the present invention provides a fan. Summary of the Invention

[0013] Aiming at the problems in the prior art, the object of the present invention is to provide a fan, which overcomes the problems in the prior art, can change the movement direction of the air flow inside the fan, reduce the overall height of the fan, reduce the overall volume, extend the service life of the filter screen, and reduce the usage cost.

[0014] An embodiment of the present invention provides a fan, including:

[0015] A body portion, including an air inlet, an air outlet, and a fan motor assembly for generating an air flow, the air flow passing through the body portion along a first direction; and

[0016] A nozzle, connected to the air outlet, for receiving the air flow from the body portion and emitting the air flow. As the air flow enters the nozzle, the air flow moves at least based on a second direction opposite to the first direction and is then emitted from the nozzle.

[0017] Preferably, the body portion and the fan motor assembly overlap in the height direction.

[0018] Preferably, the first direction is the direction of gravity, the second direction is the anti-gravity direction, the air inlet is located at the upper part of the body along the direction of gravity, the air outlet is located at the lower part of the body along the direction of gravity, and the fan motor assembly is located in the area between the air inlet and the air outlet position.

[0019] Preferably, the nozzle has at least one output air duct, the extension direction of the output air duct is parallel to the first direction, and the air flow passes through the output air duct along the second direction.

[0020] Preferably, the body has at least one guiding air duct for changing the flow direction of the air flow, the guiding air duct extends along a third direction perpendicular to the first direction, and respectively connects the air outlet of the fan motor assembly and the nozzle.

[0021] Preferably, the air outlet of the fan motor assembly is connected to two guiding air ducts, the guiding air ducts are respectively connected to the openings on both sides of the body, the nozzle has a semi-frame-shaped nozzle body, the nozzle body straddles the first side of the body facing the first direction, and both ends of the nozzle body are respectively connected to the openings.

[0022] Preferably, a receiving space is formed by enclosing between the first side of the body and the first side of the nozzle body, and a first wiring terminal is provided in the receiving space;

[0023] It further includes at least one function expansion part, which is arranged in the receiving space, and the second contact terminal of the function expansion part is electrically connected to the first wiring terminal.

[0024] Preferably, the first side of the body is provided with a first wiring terminal, and the first side of the body supports the lower surface of the function expansion part; the second contact terminal is arranged on the lower surface of the function expansion part, and the second contact terminal is electrically connected to the first wiring terminal along the second direction.

[0025] Preferably, the function expansion part is one of the following:

[0026] Electronic humidifier;

[0027] Electronic aromatherapy machine;

[0028] LED lamp;

[0029] Electronic mosquito repellent;

[0030] Electronic display screen;

[0031] Charging stand for charging a mobile terminal.

[0032] Preferably, the function expansion part is one of the following: the function expansion part is a spraying part, and the air flow ejected from the nozzle passes through the exhaust port of the spraying part.

[0033] The fan of the present invention can change the movement direction of the air flow in the fan, reduce the overall volume, and lower the usage cost. Brief Description of the Drawings

[0034] Other features, objects, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings.

[0035] Figure 1 It is a cross-sectional view of a bladeless fan of the prior art.

[0036] Figure 2 It is a schematic diagram of the internal air duct of the fan of the present invention.

[0037] Figure 3 It is Figure 2 a cross-sectional view taken along the line A-A in

[0038] Figure 4 It is a schematic diagram of the fan of the present invention connected to a function module.

[0039] Figure 5 It is a perspective view of the fan of the present invention.

[0040] Figure 6 It is Figure 2 a cross-sectional view taken along the line B-B in

[0041] Figure 7 It is Figure 2 a cross-sectional view taken along the line C-C in

[0042] Figure 8 It is an exploded view of the fan of the present invention.

[0043] Figure 9 It is a partial exploded view of an embodiment of the fan of the present invention.

[0044] Figure 10 It is a perspective view of an air inlet in the fan of the present invention.

[0045] Figure 11 It is a schematic diagram of an air inlet in the fan of the present invention.

[0046] Figure 12 It is Figure 11 a cross-sectional view taken along the line D-D in

[0047] Figure 13 It is a perspective view of the fan motor assembly in the fan of the present invention.

[0048] Figure 14Yes Figure 13 It is a cross-sectional view taken along the E-E direction.

[0049] Figure 15 It is an exploded view of the fan motor assembly in the fan of the present invention.

[0050] Figure 16 It is a perspective view of the air outlet tee seat in the fan motor assembly of the fan of the present invention.

[0051] Figures 17 to 20 It is a schematic diagram of the installation process of the fan of the present invention.

[0052] Figures 21 to 23 It is a schematic diagram of the first filter flow state of the fan of the present invention.

[0053] Figures 24 to 27 It is a schematic diagram of the second filter flow state of the fan of the present invention.

[0054] Reference numerals

[0055] 10 Body 51 Air guide mask

[0056] 11 Top cover 52 Air guide cover

[0057] 111 Positioning buckle 521 Third positioning seat

[0058] 112 First wiring terminal 522 Second screwing ear

[0059] 12 Ring-shaped connecting frame 523 Connecting groove

[0060] 121 Positioning card slot 53 Impeller

[0061] 122 Screw hole 54 Motor bracket

[0062] 13 Side support frame 541 Second positioning seat

[0063] 14 Air intake bracket 55 Positioning damping pad

[0064] 141 Connecting post 56 Motor

[0065] 2 Filter 57 Motor sound-absorbing cotton

[0066] 21 First annular seal 58 Motor cover

[0067] 22 First annular support frame 59 Sealing ring

[0068] 23 Tubular air filter 6 Base part

[0069] 24 Second annular support frame 61 Power supply box upper cover

[0070] 25 Second annular seal 62 Power supply board

[0071] 3 Air intake hood 63 Rotating synchronous motor

[0072] 31 Air intake port 64 Rotating bracket

[0073] 32 Wave-shaped spoiler 65 Base

[0074] 33 Air intake channel 66 Base cover

[0075] 34 Vortex channel 7 Nozzle

[0076] 35 Concave arc-shaped notch 70 Nozzle body

[0077] 4 Inner shell 71 Air outlet

[0078] 41 Semi-circular limit groove 72 First air intake port

[0079] 42 Screw hole 73 Second air intake port

[0080] 43 First buckle 74 Annular shoulder

[0081] 5 Fan motor assembly 75 Accommodating space

[0082] 50 Air outlet tee seat 8 Housing

[0083] 501 First positioning seat 8A First side

[0084] 502 Diverting wall 8B Second side

[0085] 503 Sunken diversion step 81 Air intake hole

[0086] 504 First air outlet 82 Semi-circular fitting part

[0087] 505 Second air outlet 83 Screw hole

[0088] 506 Deflector 84 Second buckle

[0089] 507 Air intake port 9 Functional expansion part

[0090] 508 First screwing ear 91 Second contact terminal Detailed implementation mode

[0091] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like or similar structures in the drawings, and thus their repetitive description will be omitted.

[0092] Figure 2 Schematic diagram of the internal air duct of the fan of the present invention. Figure 3 is Figure 2 The cross-sectional view taken along the line A-A in. As Figure 2 and 3 shown, the fan of the present invention includes a body 10 for generating an air flow and a nozzle 7 for ejecting the air flow. Among them, the body 10 at least includes a top cover 11, a filter 2, an air inlet hood 3 for providing an air inlet, a fan motor assembly 5 for generating an air flow, a housing 8 for providing an air outlet, and a nozzle 7. An air inlet hole 81 is provided on the first side 8A of the housing 8 (see Figure 17 ). The filter 2 is disposed at a corresponding position inside the air inlet hole 81 in the housing 8. The filter 2 is disposed upstream of the air inlet hood 3, and the filter 2 surrounds the air inlet hood 3. The air inlet hood 3 is disposed at the air inlet of the fan motor assembly 5. The fan motor assembly 5 causes the air flow to pass through the body 10 in the first direction W, and the first direction W is the direction of gravity. The nozzle 7 is connected to the air outlet and is configured to receive the air flow from the body 10 and eject the air flow. As the air flow enters the nozzle 7, the air flow moves at least based on a second direction X opposite to the first direction W and is then ejected from the nozzle 7. The second direction X is the anti-gravity direction. The air inlet is provided in the air inlet hood 3, and the air inlet hood 3 is located at the upper part of the body 10 along the direction of gravity. The air outlet is located at the lower part of the second side 8B of the housing 8 of the body 10 (see Figure 17 ) along the direction of gravity, and the fan motor assembly 5 is located in the area between the air inlet and the air outlet. The nozzle 7 has at least one output air duct, and the extending direction of the output air duct is parallel to the first direction W, and the air flow passes through the output air duct in the second direction X. The fan of the present invention has a completely different air duct design from the prior art, inverts the air suction direction of the fan motor assembly 5, sucks air highly from the upper part of the body 10, and after the air flow passes through the fan motor assembly 5 from top to bottom, it exhausts from the lower part of the body 10 into the nozzle 7, and then the air flow flows from bottom to top in the nozzle 7 and can be ejected from the air outlet 71 at different heights of the nozzle 7. The present invention overlaps the position layout of the fan motor assembly 5 and the position layout of the nozzle 7 in the first direction, further reducing the overall height and making full use of the idle space in the center of the nozzle 7. Moreover, on the premise of the same height, the present invention can implement a larger nozzle 7 to enhance the air supply capacity.

[0093] In a variant, the nozzle 7 may be a tubular member extending vertically on one side of the body 10, and the lower section of the tubular member is rotatably connected to the opening of the body 10.

[0094] In the present invention, the nozzle 7 and the fan motor assembly 5 can be arranged in parallel along the first direction W (or the second direction X), and the projections of the nozzle 7 and the fan motor assembly 5 on the same vertical plane at least partially overlap. This enables the air outlet 71 of the nozzle 7 to be set at the same level as the fan motor assembly 5, or even at a level lower than that of the fan motor assembly 5. By improving the air duct, the present invention divides the long-distance air flow path in the prior art, where the air flow passes through the fan motor assembly and the nozzle successively in a single direction, into at least two short-distance air flow paths with opposite directions. The two short-distance air flow paths can be parallel to each other, thereby breaking through the industry technical barrier that the fan motor assembly and the nozzle must be arranged in sequence in the height direction. This greatly reduces the overall height of the fan, also lowers the center of gravity of the product, and improves the stability of the standing posture of the product. Moreover, the air inlet located at the upper position does not suck in the dust on the ground during inhalation, reducing the use load of the filter screen, eliminating the need for frequent replacement of the filter screen, and greatly reducing the use cost of the filter screen of the bladeless fan.

[0095] The air outlet of the fan motor assembly 5 is connected to two guiding air ducts, which are respectively communicated with the openings on both sides of the body 10. The nozzle 7 has a semi-frame-shaped nozzle body 70, which straddles the first side of the body 10 facing the first direction W, and both ends of the nozzle body 70 are respectively communicated with the openings. The body 10 has at least one guiding air duct for changing the flow direction of the air flow, and the guiding air duct extends along the third direction Y perpendicular to the first direction W, and is respectively communicated with the air outlet of the fan motor assembly 5 and the nozzle 7. In this embodiment, the fan motor assembly 5, the guiding air ducts and the nozzle 7 jointly form at least one U-shaped combined air duct, but it is not limited thereto.

[0096] The shape of the nozzle body 70 is an inverted U shape, and the nozzle body 70 can rotate relative to the body 10 by a certain angle with the axis of the opening of the body 10 as the rotation axis, so as to blow air in different directions. After rotation, although the air flow flowing along the nozzle body 70 is obliquely flowing (based on the vertical plane), as the air flow enters deeper into the nozzle body 70, the air flow will still generate a displacement in the second direction X (anti-gravity direction). The nozzle body 70 is provided with at least one air outlet 71 opening along the fourth direction Z, and the fourth direction Z is perpendicular to the plane formed by the first direction W and the third direction Y. The air outlets 71 of the nozzle body 70 form an inverted U-shaped air duct, and the air inlet of the body 10 is located within the range of the inverted U-shaped air duct.

[0097] In a preferred example, the nozzle body 70 has a first state where it straddles the first side of the body 10 facing the first direction, and after rotation based on the opening, the nozzle body 70 has a second state where it avoids the projection area of the filter 2 in the second direction. The filter 2 has a lifting stroke that moves in and out of the body 10 along the second direction while avoiding the nozzle body 70 in the second state. The projection of the lifting stroke of the filter 2 in the second direction does not overlap with the projection of the second state of the nozzle body 70 in the second direction, so that the filter 2 can be disassembled along the second direction X and removed from the body 10.

[0098] In a preferred example, the accommodation space 75 has two replacement channels for the filter 2 to enter and exit the accommodation space 75 (the U-shaped nozzle body 70 naturally has two super-large openings connecting to the internal accommodation space 75). The extension direction of the replacement channels is perpendicular to the second direction. The filter 2 has a first stroke of entering and exiting the accommodation space 75 from the body 10 along the second direction, and a second stroke of entering and exiting the accommodation space 75 from the replacement channels. The height of the accommodation space 75 and the height J of the replacement channels are both greater than the height K of the filter 2, and the width of the accommodation space 75 and the width of the replacement channels are both greater than the width of the filter 2.

[0099] Figure 4 Schematic diagram of the fan connection function module of the present invention. As Figure 4 shown, in the present invention, not only can the body 10 be integrally arranged in the central area of the nozzle body 70, but also the different structural layouts of this area can be more fully developed to strengthen the expansion function of the fan. The module with the function expansion and the body 10 are jointly arranged in the central area of the nozzle body 70. A accommodation space 75 is formed by enclosing between the first side of the fan of the present invention facing the first direction W and the first side of the nozzle body 70. The accommodation space 75 is provided with a first terminal 112. The fan of the present invention further includes at least one function expansion member 9, which is arranged in the accommodation space 75, and the second contact terminal 91 of the function expansion member 9 is electrically connected to the first terminal 112. For example, the first side of the body 10 is provided with the first terminal 112, and the first side of the body 10 supports the lower surface of the function expansion member 9. The second contact terminal 91 is arranged on the lower surface of the function expansion member 9, and the second contact terminal 91 is butt-connected and electrically connected to the first terminal 112 along the second direction X. In a preferred example, the second contact terminal 91 is connected to the power supply circuit board of the fan base through a wire, but is not limited thereto.

[0100] In this embodiment, the function expansion member 9 is one of the following: an electronic humidifier; an electronic aromatherapy machine, an LED lamp, an electronic mosquito repellent, an electronic display screen, a charging stand for charging a mobile terminal, but not limited thereto. The function expansion member 9 may be a spraying member, and the exhaust port of the spraying member is exposed in the accommodation space 75, and the air flow ejected from the nozzle 7 passes through the exhaust port of the spraying member, but not limited thereto. In a preferred solution, Coanda surfaces are provided at the air outlet openings distributed along the nozzle. Through the Coanda surfaces, an air duct is formed that passes from the first side of the nozzle body 70 through the accommodation space 75 inside the nozzle body 70 to the second side of the nozzle body 70. This air duct drives a part of the air on one side of the nozzle body 70 to move towards the side where the nozzle body 70 discharges air. The exhaust port of the spraying member is arranged within the range of the air duct formed by the air outlet openings. This part of the air passing through the nozzle body 70 flows through the exhaust port of the spraying member, mixing the functional gas discharged by the spraying member into the air flow ejected by the fan. For example: the function expansion member 9 is an electronic humidifier, and the air flow ejected from the nozzle 7 passes through the exhaust port of the electronic humidifier. The inner circumference of the nozzle 7 is provided with air outlet openings opening towards the same side, and the air outlet openings are provided with Coanda surfaces, driving a part of the air on one side of the nozzle body 70 to move towards the side where the nozzle body 70 discharges air. This part of the air passing through the nozzle body 70 flows through the exhaust port of the electronic humidifier, making the overall air flow ejected by the fan more humid, realizing the functional combination of the electronic humidifier and the fan, and enhancing the humidifying effect of the fan. Similarly, the function expansion member 9 may also be an electronic aromatherapy machine, and the air flow ejected from the nozzle 7 passes through the exhaust port of the electronic aromatherapy machine. The air outlet openings with Coanda surfaces can also be used to combine the functions of the electronic aromatherapy machine and the fan, enhancing the effect of improving the room odor by the fan, which will not be elaborated here. The shape of the nozzle body 70 in the present invention can not only provide a channel for replacing the filter without moving the nozzle body 70; but also helps to mix more functional gas of the spraying member into the air flow ejected by the fan by means of the continuous Coanda surface composed of the circumferentially arranged air outlet openings, realizing the combination of functions.

[0101] Figure 5 Is a perspective view of the fan of the present invention. Figure 6 is Figure 2 The sectional view taken along line B-B in Figure 7 is Figure 2 The sectional view taken along line C-C in Figure 8 Is an exploded view of the fan of the present invention. As Figures 5 to 8As shown in the figure, in a preferred embodiment of the present invention, the body of the fan of the present invention includes a base portion 6 arranged from bottom to top along the second direction X, a fan motor assembly 5 for generating an air flow, an air intake bracket 14, an air intake cover 3 providing an air inlet, a filter 2, and a top cover 11. Among them, the base portion 6 includes an upper cover 61 of the power supply box, a power supply board 62, a rotary synchronous motor 63, a rotary bracket 64, a base 65, and a base cover 66. By rotating the rotary synchronous motor 63, the upper components supported by the upper cover 61 of the power supply box, such as the fan motor assembly 5 and the nozzle 7 of the air intake cover 3, can rotate horizontally in place. By making full use of the idle central area of the nozzle 7 in the prior art, the whole body 10 is arranged in the central area of the nozzle 7, and the air inlet of the body 10 is within the range of the inverted U-shaped air duct, so that the volume of the product is greatly reduced, and the costs of product transportation and product storage are reduced.

[0102] Two inner shells 4 that can be mutually engaged are engaged with both sides of the fan motor assembly 5 and the base portion 6. After the two inner shells 4 are engaged and screwed together, the fan motor assembly 5 is limited above the base portion 6. And on the side walls at both ends of each inner shell 4, there are first buckles 43, screw holes 42, and semicircular limiting grooves 41 with exposed openings. After the two inner shells 4 are engaged, an annular groove is formed. On the inner sides at both ends of the nozzle body 70, a first air inlet 72 and a second air inlet 73 are respectively arranged, and the first air inlet 72 and the second air inlet 73 are each connected to an opening.

[0103] Two outer shells 8 that can be mutually engaged are engaged with the outer periphery of the inner shell 4. The outer shells 8 cover the air intake cover 3 and the fan motor assembly 5. In the area of each outer shell 8 corresponding to the air intake cover 3, there are mesh-shaped air intake holes 81. On the side walls at both ends of the outer shell 8, there are second buckles 84, semicircular splicing parts 82, and screw holes 83. The second buckles 84 of the outer shell 8 are respectively engaged with the first buckles 43 of the inner shell 4.

[0104] The lower surfaces of two side support frames 13 are connected to the air intake bracket 14. The upper surfaces of the side support frames 13 and the screw holes 83 at the upper ends of the docked outer shells 8 are connected together through the screw holes 122 of an annular connecting frame 12. There is a positioning card slot 121 inside the annular connecting frame 12. The height of the outer shell 8 is greater than the height of the fan motor assembly 5. A space for accommodating the filter 2 and the air intake cover 3 is provided between the upper two side support frames 13 of the surrounded outer shell 8. On the lower surface of the air intake bracket 14, there are connecting columns 141. A connecting groove 523 is arranged on the outer periphery of the fan motor assembly 5. The connecting columns 141 are inserted into the connecting groove 523, and the air intake cover 3 is connected to the upper surface of the air intake bracket 14, so that the air intake cover 3 can be connected to the air inlet of the fan motor assembly 5 through the air intake bracket 14.

[0105] The filter 2 surrounds the air intake cover 3, and the filter 2 is arranged upstream of the air inlet of the air intake cover 3. The filter 2 is a tubular air filter screen 23 (see Figure 20), the first side of the tubular air filter 23 is provided with a first annular support frame 22 (see Figure 20 ) for fixing the first annular seal 21 (see Figure 20 ). The lower surface of the top cover 11 is provided with a slot, and the slot of the top cover 11 is detachably engaged with the first annular support frame 22.

[0106] The lower surface of the top cover 11 is provided with a positioning buckle 111 that is detachably engaged with the positioning slot 121 of the annular connection frame 12 by rotation. When the top cover 11 is engaged in the annular connection frame 12, the top cover 11 and the air inlet bracket 14 clamp the upper end face and the lower end face of the filter 2. The second side of the tubular air filter 23 is provided with a second annular support frame 24 (see Figure 20 ) for fixing the second annular seal 25 (see Figure 20 ). The second annular support frame 24 is connected to the air inlet bracket 14. The first side of the tubular air filter 23 is sealed with the top cover 11 through the first annular seal 21, and the second side of the tubular air filter 23 is sealed with the air inlet bracket 14 through the second annular seal 25. The materials of the first annular seal 21 and the second annular seal 25 are preferably slow-rebound sponges. The medium of the tubular air filter 23 can be existing air filter materials or air filter materials invented in the future, and is not limited thereto.

[0107] Figure 9 is a partial exploded view of an embodiment of the fan of the present invention. Figure 10 is a perspective view of an air inlet in the fan of the present invention. Figure 11 is a schematic view of an air inlet in the fan of the present invention. Figure 12 is Figure 11 a cross-sectional view taken along the D-D direction in Figures 9 to 12As shown, the body 10 of the fan of the present invention is provided with an air inlet hood 3 having an air inlet. The air inlet hood 3 is arranged downstream of the filter 2. The air inlet hood 3 is arranged in the annular area defined by the filter 2, and the air flow filtered by the filter 2 enters the fan motor assembly 5 through the air inlet hood 3. For the fan motor assembly 5, the air inlet hood 3 is arranged upstream of the air inlet of the fan motor assembly 5, and the air inlet hood 3 can disturb the air flow entering the fan motor assembly 5 to reduce noise. The outer periphery of the air inlet hood 3 along the first direction W is provided with a plurality of circumferentially distributed and spaced wave-shaped flow disturbing vanes 32. The wave-shaped flow disturbing vanes 32 extend from the outer periphery of the air inlet hood 3 towards the center. The gaps between adjacent wave-shaped flow disturbing vanes 32 form vortex-arranged air inlet channels 33. The wave-shaped flow disturbing vanes 32 can divide the inhaled air flow into multiple air flows for the first time, thereby achieving the effect of noise reduction. In this embodiment, the inside of the air inlet hood 3 is hollow to form a vortex channel 34. The first end of the vortex channel 34 is connected to the air inlet channels 33 respectively along the circumferential direction perpendicular to the first direction W, and the second end of the vortex channel 34 is connected to the air inlet of the fan motor assembly 5 along the second direction X to further reduce noise. Along the connection direction of the air inlet channels 33, an air inlet 31 exposed outside the outer periphery of the air inlet hood 3 and a narrow slit connecting the vortex channel 34 are provided at both ends of the air inlet channels 33 to further reduce noise.

[0108] In a preferred embodiment, along the connection direction of the air inlet channels 33, the closer to the vortex channel 34, the smaller the flow area of the air inlet channels 33; the closer to the air inlet 31, the larger the flow area of the air inlet channels 33 to further reduce noise.

[0109] In a preferred embodiment, a rotating impeller 53 is provided in the fan motor assembly 5. The wave crest direction of each wave-shaped flow disturbing vane 32 is the same as the rotation direction of the impeller 53, and the angles at which each air inlet channel 33 enters the vortex channel 34 are different to further reduce noise.

[0110] In a preferred embodiment, a concave arc-shaped notch 35 is provided on the side of each wave-shaped flow disturbing vane 32 facing the air inlet of the fan motor assembly 5 to lengthen the distance between the inhaled air and the impeller, which also has the effect of assisting in noise reduction, thereby further reducing noise.

[0111] Figure 13 Is a perspective view of the fan motor assembly in the fan of the present invention. Figure 14 Is Figure 13 The cross-sectional view taken along the E-E direction in Figure 15 Is an exploded view of the fan motor assembly in the fan of the present invention. Figure 16 Is a perspective view of the air outlet tee seat in the fan motor assembly of the fan of the present invention. As Figures 13 to 16As shown, the fan motor assembly 5 in the fan of the present invention comprises: an air guide cover 51, an air guide cover 52, an impeller 53, a motor bracket 54, a motor 56, a motor cover 58 and an air outlet three-way seat 50 which are sequentially assembled along a first direction W. The air guide cover 51 seals and connects the vortex channel 34 of the air inlet cover 3 and the air guide cover 52.

[0112] Among them, a plurality of first positioning seats 501 and a plurality of first screw lugs 508 are arranged around the outer periphery of the air outlet three-way seat 50. A motor 56 is arranged between the upper surface of the motor bracket 54 and the air outlet three-way seat 50, a plurality of second positioning seats 541 are arranged around the outer periphery of the motor bracket 54, and the motor bracket 54 is provided with a through hole for the rotation shaft of the motor 56 to pass through. A rotating impeller 53 is arranged between the lower surface of the motor bracket 54 and the air guide cover 52, and the impeller 53 is connected to the motor 56 through a rotating shaft transmission, and a plurality of third positioning seats 521 and a plurality of second screw lugs 522 are arranged around the outer periphery of the air guide cover 52. The air outlet three-way seat 50 is screwed with the air guide cover 52, and each second positioning seat 541 of the motor bracket 54 is connected to the first positioning seat 501 and the third positioning seat 521 through a flexible connector, and is clamped and limited between the first positioning seat 501 and the third positioning seat 521, so that the motor bracket 54 in this embodiment is not fixed, but the motor bracket 54 is limited between the air guide cover 52 and the air outlet three-way seat 50 based on the flexible connector on the same horizontal plane. This is equivalent to the motor bracket 54 being suspended between the air guide cover 52 and the air outlet three-way seat 50. The flexible connector and each positioning seat together constitute a shock absorber to ensure that when the fan motor assembly 5 is working, the motor bracket 54 will not contact the air guide cover 52 and the air outlet three-way seat 50 when vibration is generated, and all its contact points are transmitted by the shock absorber, which greatly reduces the noise and can better maintain the stability of the fan.

[0113] In this embodiment, the top surface of the positioning vibration damping pad 55 can be composed of a plane, the purpose of which is to convert the upward vibration into a plane motion when the power system vibrates, so as to balance the vibration. The lower part of the positioning vibration damping pad 55 can be composed of a cone, and the surfaces it contacts are all convex point contacts, the purpose of which is to reduce the contact area to achieve the vibration damping effect. The middle of the positioning vibration damping pad 55 is composed of a hollow blind hole, the purpose of which is to use the middle blind hole to produce elastic deformation by the shock absorber when the power system vibrates, so as to achieve the vibration damping effect, and the hole forms a closed hollow hole with the upper support after assembly, the purpose of which is to lock the air in the blind hole so that it can quickly restore the elastic deformation due to the air pressure during vibration.

[0114] In a preferred embodiment, the first positioning seat 501, the second positioning seat 541 and the third positioning seat 521 are respectively provided with coaxial through holes. The flexible connecting member is a nail-shaped positioning and damping pad 55, and the positioning and damping pad 55 passes through and clamps the through holes of the first positioning seat 501, the second positioning seat 541 and the third positioning seat 521. The positioning and damping pad 55 includes a rod portion, an outwardly expanding frustum and an outwardly expanding shoulder platform respectively located at both ends of the rod portion. The maximum diameter of the outwardly expanding frustum and the maximum diameter of the outwardly expanding shoulder platform are both larger than the diameter of the rod portion. The rod portion passes through the through holes of the first positioning seat 501, the second positioning seat 541 and the third positioning seat 521, and clamps the first positioning seat 501, the second positioning seat 541 and the third positioning seat 521 between the outwardly expanding frustum and the outwardly expanding shoulder platform. An axial hollow blind hole is provided along the first direction W of the positioning and damping pad 55, and the hollow blind hole extends at least from the outwardly expanding frustum to the rod portion. Or the hollow blind hole extends at least from the outwardly expanding frustum to the outwardly expanding frustum.

[0115] In a preferred example, between the motor bracket 54 and the air outlet three-way seat 50, an annular motor sound-absorbing cotton 57 is provided around the outer periphery of the motor 56. With the above structure, the noise caused by the high-speed rotation of the motor and the impeller is further reduced.

[0116] In this embodiment, the air outlet tee seat 50 includes an air inlet 507 provided on the air outlet side of the impeller, a first air outlet 504 and a second air outlet 505 respectively communicating with the nozzle 7, and a flow dividing wall 502 that guides the air flow passing through the air inlet 507 to the first air outlet 504 and the second air outlet 505 respectively after splitting. Both ends of the nozzle body 70 communicate with the first air outlet 504 and the second air outlet 505 respectively. The air inlet 507 is located on the first side of the air outlet tee seat 50, the flow dividing wall 502 is located at the center of the second side of the air outlet tee seat 50, and the first air outlet 504 and the second air outlet 505 are respectively located at both ends of the second side of the air outlet tee seat 50. The first air outlet 504 and the second air outlet 505 are respectively exposed on both sides of the body 10. The air outlet directions of the first air outlet 504 and the second air outlet 505 are coaxial, and both are perpendicular to the air inlet direction of the air inlet 507. Symmetrical first guiding slopes and second guiding slopes are respectively formed on both sides of the flow dividing wall 502. The first guiding slope guides part of the air flow passing through the air inlet 507 to the first air outlet 504, and the second guiding slope guides part of the air flow passing through the air inlet 507 to the second air outlet 505. The two ends of the flow dividing wall 502 protruding in the second direction X extend along the second direction X to the air inlet 507 respectively, jointly forming a U-shaped plate-like flow dividing wall, so as to split the air flow passing through the air inlet 507 on the premise of reducing noise. In this embodiment, the flow dividing wall 502 is arranged based on the central axis of the air inlet 507, and evenly divides the flow area of the air inlet 507. The inner wall of the air outlet tee seat 50 is provided with guide vanes 506 extending from the air inlet 507 to the second side of the air outlet tee seat 50 respectively, but not limited thereto. The inner wall of the air outlet tee seat 50 is provided with a sunken guide step extending from the first guiding slope to the first air outlet 504. The sunken distance of the sunken guide step is greater the closer it is to the first air outlet 504; the inner wall of the air outlet tee seat 50 is provided with a sunken guide step extending from the second guiding slope to the second air outlet 505. The sunken distance of the sunken guide step is greater the closer it is to the second air outlet 505, so as to reduce the noise when the air flow turns and provide space for the base part 6, but not limited thereto. The air outlet tee seat 50 in the present invention integrates diversion and splitting, greatly reducing the height of the fan motor assembly 5, and further reducing the total height and volume of the whole fan.

[0117] In a preferred solution, the inner wall of the air outlet tee seat 50 is provided with guide vanes extending from the air inlet 507 to the first air outlet 504 or the second air outlet 505 respectively, but not limited thereto.

[0118] The air inlet 507 is an annular pipe orifice. The distance from the orifice edge of the annular pipe orifice to the first air outlet 504 or the second air outlet 505 in the first direction W is d. The diameters of the first air outlet 504 and the second air outlet 505 are h. The ratio range of d to h is 2.0 to 3.5. After the air flow generated by the impeller 53 enters the air inlet 507 of the air outlet tee seat 50, the air flow will rotate the flow direction by at least 90° within a very short distance. If the ratio of d to h is too small, the air pressure of the air flow will be reduced, the air output will be decreased, and the air supply distance will be affected. On the contrary, if the ratio of d to h is too large, a vortex negative will be formed, and a turbulent flow will be formed, which will generate a lot of noise.

[0119] In a preferred embodiment, the ratio range of d to h is one of the following: 2.1 to 3.4; 2.2 to 3.3; 2.3 to 3.2; 2.4 to 3.1; 2.5 to 3.0; 2.6 to 2.9; 2.7 to 2.8.

[0120] In a preferred embodiment, the ratio of d to h is 2.7.

[0121] Figures 17 to 20 It is a schematic diagram of the installation process of the fan of the present invention. As Figures 17 to 20 shown, the installation process of the fan of the present invention is as follows: First, connect the air inlet cover 3, the air inlet bracket 14, the fan motor assembly 5, and the base part 6 through the first inner shell 4. Insert the nozzle 7 with annular shoulders 74 at both ends horizontally into the semicircular limit groove 41 exposed on the inner shell 4, so that the first air inlet 72 and the second air inlet 73 of the annular shoulder 74 are respectively connected to the first air outlet 504 and the second air outlet 505 of the air outlet tee seat 50 of the fan motor assembly 5, and are sealed through the sealing ring 59. Then, snap the second inner shell 4 onto the first inner shell 4 and screw it through the screw holes 42, and snap the annular shoulder 74 into the annular groove formed by the combination of the two semicircular limit grooves, so that the nozzle 7 can rotate based on the annular groove. Then, buckle two outer shells 8 on the outer periphery of the inner shell 4, install the side support frame 13, and then screw the upper end of the side support frame 13 and the upper end of the outer shell 8 together through the annular connecting frame 12. Finally, place the filter 2 into the space between the inner wall of the outer shell 8 and the outer periphery of the air inlet cover 3, and through the rotational locking of the top cover 11 and the annular connecting frame 12, clamp the filter 2 in a sealed manner between the top cover 11 and the air inlet bracket 14.

[0122] The installation method of the present invention changes the existing method of sleeving the nozzle 7 vertically on the body part, which is more conducive to the sealing of the air duct and reduces the installation difficulty.

[0123] Figures 21 to 23 It is a schematic diagram of the first filter process state of the fan of the present invention. As Figures 21 to 23 shown, for the first method of replacing the filter of the fan of the present invention, using the upper fan, the replacement process is as follows:

[0124] Separate the filter 2 to be replaced in the body 10.

[0125] Insert the filter 2 to be replaced into the accommodation space 75 from the body 10 along the second direction X.

[0126] Remove the filter 2 to be replaced from the accommodation space 75 along the replacement channel out of the accommodation space 75.

[0127] Insert the unused filter 2N into the accommodation space 75 along the replacement channel.

[0128] Press the unused filter 2 from the accommodation space 75 into the body 10 along the first direction W.

[0129] Combine the unused filter 2 in the body 10.

[0130] In a preferred embodiment, the filter 2 is a tubular air filter screen, and the fan further includes a top cover 11 that presses against one side of the tubular air filter screen along the first direction W and an air intake bracket 14 that supports the second side of the tubular air filter screen along the second direction X.

[0131] When separating the filter 2 to be replaced, it includes: separating the top cover 11 from the body 10 to expose the filter 2 to be replaced, and pulling out the filter 2 from the body 10 along the second direction X from the air intake bracket 14.

[0132] When combining the unused filter 2, it includes: pressing the filter 2 from the air intake bracket 14 that has been pressed into the body 10 along the first direction W, and combining the top cover 11 with the body 10 to enclose the unused filter 2.

[0133] If there is a function expansion part on the top cover 11, it is preferred to remove the function expansion part in the same way first and then unscrew the top cover 11, which will not be elaborated here.

[0134] In this embodiment, the fan only needs one component disassembly action to replace the filter screen (only removing the top cover 11 can replace the filter screen), and only needs to replace the filter screen once, which greatly reduces the workload and time for replacing the filter screen and improves the user experience.

[0135] Figures 24 to 27 It is a schematic diagram of the second filter process state of the fan of the present invention. As Figures 24 to 27 shown, for the second method of replacing the filter of the fan of the present invention, using the upper fan, the replacement process is as follows:

[0136] Rotate the nozzle body 70 to the second state.

[0137] Separate the filter 2 to be replaced in the body 10.

[0138] Pull out the filter 2 along the second direction X in the body portion 10, and the filter 2 is removed from the fan while avoiding the nozzle body 70.

[0139] Press the unused filter 2N into the body portion 10 along the second direction X while avoiding the nozzle body 70.

[0140] Combine the unused filter 2 in the body portion 10.

[0141] Rotate the nozzle body 70 to the first state.

[0142] In a preferred embodiment, the filter 2 is a tubular air filter screen, and the fan further includes a top cover 11 that presses one side of the tubular air filter screen along the first direction W and an air intake bracket 14 that supports the second side of the tubular air filter screen along the second direction X.

[0143] When separating the filter 2 to be replaced, it includes: separating the top cover 11 from the body portion 10 to expose the filter 2 to be replaced, and pulling out the filter 2 from the body portion 10 along the second direction X from the air intake bracket 14.

[0144] When combining the unused filter 2, it includes: pressing the filter 2 from the air intake bracket 14 that has been pressed to the body portion 10 along the first direction W, and combining the top cover 11 with the body portion 10 to enclose the unused filter 2.

[0145] If there is a function expansion part on the top cover 11, it is preferred to remove the function expansion part in the same way first and then unscrew the top cover 11, which will not be elaborated here.

[0146] Similarly, in this embodiment, replacing the filter net of the fan only requires one component disassembly action (only removing the top cover 11 can replace the filter net), and only needs to replace the filter net once, greatly reducing the workload and time of replacing the filter net and improving the user-friendly experience.

[0147] In summary, the purpose of the present invention is to provide a fan that can change the movement direction of the air flow inside the fan, reduce the overall volume, and lower the use cost.

[0148] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A fan, characterized in that, comprising: a body portion (10), including an air inlet, an air outlet, and a fan motor assembly (5) for generating an air flow, the air flow passing through the body portion (10) in a first direction, the air inlet being located at the upper part of the body portion (10) along the gravity direction, the air outlet being located at the lower part of the body portion (10) along the gravity direction, the fan motor assembly (5) being located in the area between the air inlet and the air outlet, inverting the suction direction of the fan motor assembly (5), performing high suction from the upper part of the body portion (10), and the air flow only passing through the fan motor assembly (5) from top to bottom in the first direction; and a nozzle (7), connected to the air outlet, for receiving the air flow from the body portion (10) and emitting the air flow, the lower part of the body portion (10) exhausting air into the nozzle (7), and after the air flow flows upward from the nozzle (7), it is ejected from the air outlets (71) at different heights of the nozzle (7), and the air flow is emitted from the nozzle (7) after moving at least based on a second direction opposite to the first direction, the nozzle (7) and the fan motor assembly (5) being arranged in parallel along the first direction, the first direction being the gravity direction, and the second direction being the anti-gravity direction.

2. The fan according to claim 1, characterized in that the projections of the nozzle (7) and the fan motor assembly (5) on the same vertical plane at least partially overlap.

3. The fan according to claim 1, characterized in that, the nozzle (7) has at least one output air duct, the extension direction of the output air duct being parallel to the first direction, and the air flow passing through the output air duct in the second direction.

4. The fan according to any one of claims 1 to 3, characterized in that, the air outlet of the fan motor assembly (5) is connected to two guiding air ducts, the guiding air ducts being respectively communicated with the openings on both sides of the body portion (10), the nozzle (7) having a semi-frame-shaped nozzle body (70), the nozzle body (70) straddling the first side surface of the body portion (10) facing the first direction, and both ends of the nozzle body (70) being respectively communicated with the openings.

5. The fan according to claim 4, characterized in that, a receiving space (75) is formed by enclosing between the first side surface and the first side surface of the nozzle body (70), and a first wiring terminal (112) is provided in the receiving space (75); further comprising at least one function expansion member (9), arranged in the receiving space (75), and the second contact terminal (91) of the function expansion member (9) being electrically connected to the first wiring terminal (112).

6. The fan according to claim 5, characterized in that, A first connection terminal (112) is provided on a first side surface of the body portion (10), and the first side surface of the body portion (10) supports a lower surface of the function expansion member (9); the second contact terminal (91) is disposed on the lower surface of the function expansion member (9), and the second contact terminal (91) is in butt conduction with the first connection terminal (112) along a second direction.

7. The fan according to claim 6, characterized in that the function expansion member (9) is one of the following: an electronic humidifier; an electronic aromatherapy machine; an LED lamp; an electronic mosquito repellent; an electronic display screen; a charging stand for charging a mobile terminal.

8. The fan according to claim 7, characterized in that the function expansion member (9) is one of the following: the function expansion member (9) is a spraying member, and an air flow ejected from the nozzle (7) passes through an exhaust port of the spraying member.

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