fan

Abstract

The present invention provides a fan, comprising: a body, including an air inlet, an air outlet, and a fan motor assembly for generating an air flow; a nozzle, connected to the air outlet, for receiving the air flow from the body and emitting the air flow; the fan motor assembly comprising: an air outlet base, with a first positioning seat and a first screw ear provided around the outer periphery of the air outlet base; a motor bracket, with a motor provided between the first side of the air outlet base, and a second positioning seat provided around the outer periphery of the motor bracket; an air guide cover, with a rotating impeller provided between the second side of the air outlet base, and a third positioning seat and a second screw ear provided around the outer periphery of the air guide cover; the air outlet base is screwed to the air guide cover, and each second positioning seat of the motor bracket is connected to the first positioning seat and the third positioning seat by a flexible connector, and is clamped and limited between the first positioning seat and the third positioning seat. The present invention can change the direction of movement of the air flow in the fan, reduce the overall height of the fan, and reduce the overall volume.

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, and indoor air quality has become an important issue of concern to people.

[0003] Air purifiers are small household appliances used to purify indoor air, primarily addressing indoor air pollution caused by renovations or other factors. Due to the persistent and uncertain nature of pollutant release in indoor air, using an air purifier to purify indoor air is an internationally recognized method for improving indoor air quality. Air purifiers utilize a variety of technologies and media to provide clean and safe air. Common air purification technologies include low-temperature asymmetric plasma air purification, adsorption, negative ionization, negative oxygen ionization, molecular complexation, nano-TiO2, HEPA high-efficiency filtration, electrostatic dust collection, and activated oxygen technology. Materials include photocatalysts, activated carbon, synthetic fibers, and HEPA high-efficiency materials. The cost of a high-quality filter can account for 20% to 30% of the total cost of an air purifier.

[0004] At present, there are many bladeless fans with air filters. Figure 1 : 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 base 904, a filter 905, a fan motor 906, and a mesh liner 907. The housing 903 with the air inlet mesh is set on the base 904. The housing 903 is provided with a filter 905, and the filter 905 is provided with a mesh liner 907. The mesh liner 907 is provided with a first air inlet for the fan motor 906. The annular nozzle 901 is arranged above the fan motor 906 in the direction of gravity, and the air outlet of the fan motor 906 is connected to the nozzle 901. Indoor air passes through the mesh of the housing 903 and the filter 905 in sequence, and then enters the mesh liner 907. The air inlet of the fan motor 906 draws air in the direction against gravity and then continues to transport it in the direction against gravity (vertically upward) to one end of the annular nozzle 901. The air is then distributed to various parts of the annular nozzle 901 and ejected.

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

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

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

[0008] (3) Since the air inlet of the fan motor is located at a lower position, it is easier to suck in dust on the ground when inhaling air, which increases the load on the filter and requires more frequent replacement of the filter, which significantly increases the cost of using the bladeless fan.

[0009] (4) The outer shell of this type of bladeless fan is a structure consisting of two horizontally aligned shells, each of which is equipped with a filter. The filter is sealed between the filter and the mesh inner liner by a three-dimensional sealing strip set downstream. The three-dimensional sealing strip is extremely expensive and has poor sealing effect after long-term use.

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

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

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

[0013] In response to the problems in the prior art, the purpose of the present invention is to provide a fan that overcomes the problems of the prior art, 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, and reduce the cost of use.

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

[0015] a body portion including an air inlet, an air outlet, and a fan motor assembly for generating an air flow;

[0016] a nozzle connected to the air outlet, configured to receive an air flow from the body and emit the air flow;

[0017] The fan motor assembly comprises:

[0018] An air outlet base, wherein a first positioning seat and a first screw ear are provided around the outer periphery of the air outlet base;

[0019] A motor is arranged between the motor bracket and the first side of the air outlet base, a second positioning seat is arranged around the outer periphery of the motor bracket, and the motor bracket is provided with a through hole for the rotation shaft of the motor to pass through;

[0020] An air guide cover is provided with a rotating impeller between the air guide cover and the second side of the air outlet base, the impeller is connected to the motor through the rotating shaft, and a third positioning seat and a second screw ear are provided around the outer periphery of the air guide cover;

[0021] The air outlet base is screwed to the air guide cover, and each of the second positioning seats of the motor bracket is connected to the first positioning seat and the third positioning seat through a flexible connecting piece, and is clamped and limited between the first positioning seat and the third positioning seat. The motor bracket is suspended between the air outlet base and the air guide cover through circumferential multi-point positioning.

[0022] Preferably, the first positioning seat, the second positioning seat and the third positioning seat are respectively provided with coaxial through holes, and the flexible connecting member is a nail-shaped positioning vibration damping pad, which passes through and clamps the through holes of the first positioning seat, the second positioning seat and the third positioning seat.

[0023] Preferably, the positioning vibration damping pad includes a rod portion and an outward-expanded cone and an outward-expanded shoulder respectively located at both ends of the rod portion, the maximum diameter of the outward-expanded cone and the maximum diameter of the outward-expanded shoulder are both larger than the diameter of the rod portion, and the rod portion passes through the through holes of the first positioning seat, the second positioning seat and the third positioning seat, clamping the first positioning seat, the second positioning seat and the third positioning seat between the outward-expanded cone and the outward-expanded shoulder.

[0024] Preferably, the positioning vibration damping pad is provided with a hollow blind hole in the axial direction along the first direction.

[0025] Preferably, an annular motor silencer cotton is provided between the motor bracket and the air outlet base, surrounding the outer circumference of the motor.

[0026] Preferably, the first positioning seat and the first screw ear are both located at the same level of the air outlet base;

[0027] The second positioning seats are all located at the same level as the motor bracket;

[0028] The third positioning seat and the second screw ear are both located at the same level of the air guide cover.

[0029] Preferably, the first positioning seat and the first screw ear are distributed at intervals on the outer periphery of the air outlet base;

[0030] The third positioning seat and the second screw ear are distributed at intervals on the outer periphery of the air guide cover.

[0031] Preferably, the air flow passes through the air intake cover and the fan motor assembly in sequence along a first direction and enters the nozzle along the air flow. The air flow is emitted from the nozzle after moving in at least a second direction opposite to the first direction.

[0032] Preferably, it also includes an air intake cover arranged upstream of the air inlet of the fan motor assembly, and the air intake cover is provided with a plurality of circumferentially distributed and spaced-apart corrugated spoilers along the outer periphery of the first direction, the corrugated spoilers extend from the outer periphery of the air intake cover to the center, and the gaps between adjacent corrugated spoilers form a vortex-arranged air intake channel, and the corrugated protrusion direction of each corrugated spoiler is consistent with the rotation direction of the impeller.

[0033] Preferably, the first direction is the direction of gravity, the second direction is the direction of anti-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.

[0034] The fan of the present invention can change the movement direction of the air flow in the fan, reduce the overall volume and reduce the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0036] Figure 1 It is a cross-sectional view of a bladeless fan in the prior art.

[0037] Figure 2 Schematic diagram of the internal air duct of the fan of the present invention.

[0038] Figure 3 yes Figure 2 Cross-sectional view along the AA axis.

[0039] Figure 4 Schematic diagram of the fan connection function module of the present invention.

[0040] Figure 5 It is a three-dimensional diagram of the fan of the present invention.

[0041] Figure 6 yes Figure 5 Cross-sectional view along the BB direction.

[0042] Figure 7 yes Figure 5 Cross-sectional view along CC direction.

[0043] Figure 8 This is an exploded view of the fan of the present invention.

[0044] Figure 9 This is a partial exploded view of an embodiment of a fan of the present invention.

[0045] Figure 10 The figure is a three-dimensional diagram of an air inlet in the fan of the present invention.

[0046] Figure 11 Schematic diagram of an air inlet in a fan of the present invention.

[0047] Figure 12 yes Figure 11 Cross-sectional view along the DD direction.

[0048] Figure 13 It is a three-dimensional view of the fan motor assembly in the fan of the present invention.

[0049] Figure 14 yes Figure 13 Cross-sectional view along the EE direction.

[0050] Figure 15 1 is an exploded view of the fan motor assembly in the fan of the present invention.

[0051] Figure 16 A three-dimensional diagram of the air outlet tee in the fan motor assembly of the fan of the present invention. Figures 17 to 20 The figure is a schematic diagram of the installation process of the fan of the present invention.

[0052] Reference numerals

[0053] 10 Body 51 Air guide mask

[0054] 11 Top cover 52 Air guide cover

[0055] 111 Positioning buckle 521 Third positioning seat

[0056] 112 First connection terminal 522 Second screw ear

[0057] 12 Ring connecting frame 523 connecting groove

[0058] 121 positioning slot 53 impeller

[0059] 122 screw hole 54 motor bracket

[0060] 13 Side support frame 541 Second positioning seat

[0061] 14 Air intake bracket 55 Positioning vibration damping pad

[0062] 141 Connecting column 56 Motor

[0063] 2 Filter 57 Motor silencer cotton

[0064] 21 First annular seal 58 Motor cover

[0065] 22 first annular support frame 59 sealing ring

[0066] 23 Tubular air filter 6 Base

[0067] 24 Second annular support frame 61 Power box cover

[0068] 25 Second annular seal 62 Power supply board

[0069] 3 Inlet cover 63 Rotating synchronous motor

[0070] 31 Air inlet 64 Rotating bracket

[0071] 32 wave spoiler 65 base

[0072] 33 Air inlet channel 66 Base cover

[0073] 34 swirl channel 7 nozzle

[0074] 35 concave arc notch 70 nozzle body

[0075] 4 Inner shell 71 air outlet

[0076] 41 semicircular limiting groove 72 first air inlet

[0077] 42 screw hole 73 second air inlet

[0078] 43 first buckle 74 annular shoulder

[0079] 5 Fan motor assembly 75 Accommodation space

[0080] 50 Air outlet tee socket 8 shell

[0081] 501 First positioning seat 8A first side

[0082] 502 Diversion wall 8B second side

[0083] 503 sunken guide step 81 air intake

[0084] 504 first air outlet 82 semicircular joint

[0085] 505 Second air outlet 83 screw hole

[0086] 506 guide plate 84 second buckle

[0087] 507 Air Inlet 9 Functional Extension

[0088] 508 first screw ear 91 second contact terminal DETAILED DESCRIPTION

[0089] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many 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 comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures represent identical or similar structures, and thus a repeated description thereof will be omitted.

[0090] Figure 2 Schematic diagram of the internal air duct of the fan of the present invention. Figure 3 yes Figure 2 The cross-sectional view along the AA direction. Figure 2 and 3 As shown in FIG. 1 , the fan of the present invention comprises a body 10 for generating air flow and a nozzle 7 for ejecting the air flow. The body 10 comprises at least a top cover 11, a filter 2, an air inlet cover 3 for providing an air inlet, a fan motor assembly 5 for generating air flow, a housing 8 for providing an air outlet, and the nozzle 7. The first side 8A of the housing 8 (see FIG. 1 ) Figure 17 ) is provided with an air inlet 81, and the filter 2 is arranged at a corresponding position on the inner side of the air inlet 81 in the outer shell 8. The filter 2 is arranged upstream of the air inlet hood 3, and the filter 2 surrounds the air inlet hood 3. The air inlet hood 3 is arranged at the air inlet of the fan motor assembly 5. The fan motor assembly 5 allows the air flow to pass through the body 10 along a first direction W, and the first direction W is the direction of gravity. The nozzle 7 is connected to the air outlet, which is used to receive the air flow from the body 10 and emit the air flow. The air flow enters the nozzle 7 with the air flow, and the air flow is emitted from the nozzle 7 after moving at least in a second direction X opposite to the first direction W. The second direction X is the anti-gravity direction. The air inlet is arranged 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 on the second side 8B of the outer shell 8 of the body 10 (see Figure 17 ) in the lower part along the direction of gravity, 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, the extension direction of the output air duct is parallel to the first direction W, and the air flow passes through the output air duct along the second direction X. The fan of the present invention uses a duct design that is completely different from the prior art, inverts the suction direction of the fan motor assembly 5, and performs high suction from the upper part of the body 10. After the air flow passes through the fan motor assembly 5 from top to bottom, it is exhausted from the lower part of the body 10 and enters the nozzle 7. After the air flow flows from bottom to top through the nozzle 7, it 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 with 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, under the premise of equal height, the present invention can achieve a larger nozzle 7 and enhance the air supply capacity.

[0091] In a modified example, the nozzle 7 may be a tubular member provided on one side of the body 10 and extending in the vertical direction, and the lower section of the tubular member may be rotatably connected to the opening of the body 10 .

[0092] The nozzle 7 and the fan motor assembly 5 in the present invention 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 based on the same vertical plane at least partially overlap. This allows 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 the fan motor assembly 5. By improving the air duct, the present invention divides the long-distance air flow path of the air flow in the prior art, which passes through the fan motor assembly and the nozzle in a single direction, into at least two short-distance air flow paths in opposite directions. The two short-distance air flow paths can be parallel to each other, thus breaking through the industry technical barrier that the fan motor assembly and the nozzle must be arranged in sequence in the height direction, so that the overall height of the fan can be greatly reduced, the center of gravity of the product is lowered, and the stability of the product's standing posture is improved. In addition, the air inlet located at the top will not suck in dust on the ground when inhaling air, reducing the load of the filter screen, eliminating the need for frequent filter replacement, and greatly reducing the cost of using the filter screen of the bladeless fan.

[0093] The air outlet of the fan motor assembly 5 is connected to two guide air ducts, which are connected to openings on either side of the body 10. The nozzle 7 comprises a semi-frame-shaped nozzle body 70, which spans a first side surface of the body 10 facing the first direction W, with both ends of the nozzle body 70 connected to the openings. The body 10 has at least one guide air duct that redirects the airflow. The guide air duct extends along a third direction Y perpendicular to the first direction W, connecting the air outlet of the fan motor assembly 5 and the nozzle 7. In this embodiment, the fan motor assembly 5, the guide air duct, and the nozzle 7 collectively form at least one U-shaped combined air duct, but this is not a limitation.

[0094] The nozzle body 70 is shaped like an inverted U, and the nozzle body 70 can rotate at a certain angle relative to the body 10 based on 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 along the nozzle body 70 is an oblique flow (based on the plumb plane), when the air flow enters the depth of the nozzle body 70, the air flow will still produce a displacement in the second direction X (the direction of anti-gravity). 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 are combined to 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.

[0095] In a preferred embodiment, the nozzle body 70 has a first state in which it straddles the first side surface of the body 10 facing the first direction, and a second state in which, after rotation based on the opening, the nozzle body 70 avoids the projection area of ​​the filter 2 in the second direction. The filter 2 has a lifting stroke in the second direction in which it avoids the nozzle body 70 to enter and exit the body 10. The lifting stroke of the filter 2 in the second direction does not overlap with the projection of the nozzle body 70 in the second state, so that the filter 2 can be disassembled along the second direction X and removed from the body 10.

[0096] In a preferred embodiment, the accommodating space 75 has two replacement channels for the filter 2 to enter and exit the accommodating space 75 (the U-shaped nozzle body 70 naturally has two oversized openings connecting the internal accommodating space 75). The replacement channels extend perpendicular to the second direction. The filter 2 has a first stroke along the second direction for entering and exiting the accommodating space 75 from the body 10, and a second stroke for entering and exiting the accommodating space 75 from the replacement channels. The height J of the accommodating 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 accommodating space 75 and the width of the replacement channels are both greater than the width of the filter 2.

[0097] Figure 4 FIG. 1 is a schematic diagram of a fan connection function module of the present invention. Figure 4 As shown, the present invention not only allows the body 10 to be positioned entirely within the central region of the nozzle body 70, but also allows for further development of the various structural layouts within this region, enhancing the fan's expanded functionality. The module with expanded functionality and the body 10 can be positioned together within the central region of the nozzle body 70. The fan of the present invention comprises a first side surface facing the first direction W, which forms a housing space 75 with the first side surface of the nozzle body 70. The housing space 75 is provided with a first terminal 112. The fan of the present invention also includes at least one functional expansion component 9, which is positioned within the housing space 75. The second contact terminal 91 of the functional expansion component 9 is electrically connected to the first terminal 112. For example, the first side surface of the body 10 is provided with the first terminal 112, which supports the lower surface of the functional expansion component 9. The second contact terminal 91 is positioned on the lower surface of the functional expansion component 9, and the second contact terminal 91 is electrically connected to the first terminal 112 along the second direction X. In a preferred embodiment, the second contact terminal 91 is connected to the power supply circuit board of the fan base via a wire, but is not limited thereto.

[0098] In this embodiment, the functional expansion component 9 is one of the following: an electronic humidifier; an electronic aromatherapy machine, an LED light, an electronic mosquito repellent, an electronic display screen, or a charging dock for mobile terminals, but is not limited thereto. The functional expansion component 9 may be a jet component, the exhaust port of the jet component being exposed in the accommodating space 75, and the air flow ejected from the nozzle 7 passing through the exhaust port of the jet component, but is not limited thereto. In a preferred embodiment, the air outlets distributed along the nozzle are all provided with a Coanda surface, which forms an air duct from a first side of the nozzle body 70 through the accommodating space 75 within the nozzle body 70 to a second side of the nozzle body 70. This air duct drives a portion of the air on one side of the nozzle body 70 toward the side of the nozzle body 70 where air is discharged. The exhaust port of the jet component is located within the air duct formed by the air outlet. This portion of air passing through the nozzle body 70 flows through the exhaust port of the jet component, mixing the functional gas discharged by the jet component with the air flow ejected by the fan. For example, the functional expansion component 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 periphery of the nozzle 7 is provided with an air outlet opening to the same side. The air outlet is equipped with a Coanda surface, which drives a portion of the air on one side of the nozzle body 70 toward the outlet side of the nozzle body 70. This portion of air passing through the nozzle body 70 flows through the exhaust port of the electronic humidifier, making the air flow ejected by the fan more humid overall, thus achieving the functional combination of an electronic humidifier and a fan, and enhancing the fan's humidification effect. Similarly, the functional expansion component 9 can also be an electronic aromatherapy device, with the air flow ejected by the nozzle 7 passing through the exhaust port of the electronic aromatherapy device. Similarly, air outlets with a Coanda surface can be used to combine the functions of an electronic aromatherapy device and a fan, enhancing the fan's ability to improve room odor. This will not be discussed in detail here. The shape of the nozzle body 70 in the present invention not only provides access for filter replacement without moving the nozzle body 70, but also facilitates the mixing of more functional gas from the ejection component into the air flow ejected by the fan, thanks to the continuous Coanda surface formed by the circumferentially arranged air outlets, thus achieving a functional combination.

[0099] Figure 5 It is a three-dimensional diagram of the fan of the present invention. Figure 6 yes Figure 5 Cross-sectional view along the BB direction. Figure 7 yes Figure 5 Cross-sectional view along CC direction. Figure 8 FIG. 1 is an exploded view of the fan of the present invention. Figures 5 to 8As shown, in a preferred embodiment of the present invention, the body of the fan of the present invention includes a base 6 arranged from bottom to top along the second direction X, a fan motor assembly 5 for generating air flow, an air intake bracket 14, an air intake cover 3 providing an air inlet, a filter 2, and a top cover 11. The base 6 includes a power box upper cover 61, a power board 62, a rotating synchronous motor 63, a rotating bracket 64, a base 65, and a base cover 66. The rotation of the rotating synchronous motor 63 enables the upper components supported by the power box upper cover 61, the fan motor assembly 5, the air intake cover 3 nozzle 7, etc. to rotate horizontally in situ. The present invention makes full use of the central area of ​​the nozzle 7 that is idle in the prior art and disposes the body 10 as a whole in the central area of ​​the nozzle 7. The air inlet of the body 10 is located within the range of the inverted U-shaped air duct, which greatly reduces the volume of the product and reduces the cost of product transportation and product storage.

[0100] Two mateable inner shells 4 engage the fan motor assembly 5 and base 6 on either side. When screwed together, the fan motor assembly 5 is positioned above the base 6. The sidewalls of each inner shell 4 are provided with a first latch 43, a screw hole 42, and an open semicircular retaining groove 41. When the two inner shells 4 are joined, an annular groove is formed. A first air inlet 72 and a second air inlet 73 are provided on the inner sides of the nozzle body 70 at each end, respectively. Each of the first and second air inlets 72 and 73 communicates with an opening.

[0101] Two mutually engaging outer shells 8 are snapped onto the outer periphery of the inner shell 4. The outer shells 8 cover the air intake hood 3 and the fan motor assembly 5. Each outer shell 8 has a mesh-like air intake hole 81 in the area corresponding to the air intake hood 3. The sidewalls at both ends of the outer shell 8 are equipped with second snaps 84, semicircular joints 82, and screw holes 83. The second snaps 84 of the outer shell 8 respectively snap into the first snaps 43 of the inner shell 4.

[0102] The lower surfaces of the two side support frames 13 are connected to the air intake bracket 14, and the upper surfaces of the side support frames 13 and the screw holes 83 at the upper end of the housing 8 after docking are connected together through the screw holes 122 of an annular connecting frame 12. A positioning slot 121 is provided on the inner side of the annular connecting frame 12. The height of the housing 8 is greater than the height of the fan motor assembly 5, and space for accommodating the filter 2 and the air intake cover 3 is provided between the two side support frames 13 on the upper part of the housing 8 after enclosed. A connecting column 141 is provided on the lower surface of the air intake bracket 14, and a connecting groove 523 is provided on the outer periphery of the fan motor assembly 5. The connecting column 141 is 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.

[0103] The filter 2 surrounds the air intake cover 3 and is arranged upstream of the air inlet of the air intake cover 3. The filter 2 is a tubular air filter 23 (see Figure 20), a first annular seal 21 is fixed on the first side of the tubular air filter 23 (see Figure 20 ) of the first annular support frame 22 (see Figure 20 ), a slot is provided on the lower surface of the top cover 11, and the slot of the top cover 11 is detachably engaged with the first annular support frame 22.

[0104] 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 connecting frame 12 by rotation. When the top cover 11 is engaged with the annular connecting frame 12, the top cover 11 and the air intake bracket 14 clamp the upper and lower end surfaces of the filter 2. The second side of the tubular air filter 23 is provided with a fixed second annular seal 25 (see Figure 20 ) of the second annular support frame 24 (see Figure 20 The second annular support frame 24 is connected to the air intake bracket 14. The first side of the tubular air filter 23 is sealed to the top cover 11 via a first annular seal 21, and the second side of the tubular air filter 23 is sealed to the air intake bracket 14 via a second annular seal 25. The material of the first annular seal 21 and the second annular seal 25 is preferably a slow-rebound sponge. The medium of the tubular air filter 23 can be existing air filter materials or air filter materials invented in the future, but is not limited to these.

[0105] Figure 9 This is a partial exploded view of an embodiment of a fan of the present invention. Figure 10 The figure is a three-dimensional diagram of an air inlet in the fan of the present invention. Figure 11 Schematic diagram of an air inlet in a fan of the present invention. Figure 12 yes Figure 11 Cross-sectional view along the DD axis. Figures 9 to 12As shown, the body 10 of the fan of the present invention is provided with an air intake cover 3 having an air inlet. The air intake cover 3 is arranged downstream of the filter 2. The air intake cover 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 intake cover 3. For the fan motor assembly 5, the air intake cover 3 is arranged upstream of the air inlet of the fan motor assembly 5, and the air intake cover 3 can turbulently and silence the air flow entering the fan motor assembly 5. The air intake cover 3 is provided with a plurality of circumferentially distributed and spaced-apart wavy spoilers 32 on the periphery along the first direction W. The wavy spoilers 32 extend from the periphery of the air intake cover 3 to the center, and the gaps between adjacent wavy spoilers 32 form a vortex-arranged air intake channel 33. The wavy spoilers 32 can divide the inhaled air flow into multiple airflows for the first time, thereby achieving the effect of silencing and reducing noise. In this embodiment, the air intake hood 3 is hollowed out to form a vortex passage 34. The first end of the vortex passage 34 connects to the air intake hood 33 along a circumferential direction perpendicular to the first direction W. The second end of the vortex passage 34 connects to the air inlet of the fan motor assembly 5 along the second direction X, further reducing noise. Along the connecting direction of the air intake passage 33, the air intake hood 33 has an air intake 31 exposed to the outer circumference of the air intake hood 3 and a narrow slit connecting to the vortex passage 34 at both ends, further reducing noise.

[0106] In a preferred embodiment, along the connecting direction of the intake channel 33, the closer to the vortex channel 34, the smaller the flow area of ​​the intake channel 33; the closer to the air inlet 31, the larger the flow area of ​​the intake channel 33, so as to further reduce noise.

[0107] In a preferred embodiment, a rotating impeller 53 is provided in the fan motor assembly 5, the direction of the waveform protrusion of each waveform spoiler 32 is consistent with the rotation direction of the impeller 53, and the angle at which each air inlet channel 33 enters the vortex channel 34 is different, so as to further reduce noise.

[0108] In a preferred embodiment, a concave arc-shaped notch 35 is provided on the side of each corrugated spoiler 32 facing the air inlet of the fan motor assembly 5 so as to lengthen the distance between the inhaled air and the impeller, which also has the effect of assisting in silencing and reducing noise, thereby further reducing noise.

[0109] Figure 13 It is a three-dimensional view of the fan motor assembly in the fan of the present invention. Figure 14 yes Figure 13 Cross-sectional view along the EE direction. Figure 15 1 is an exploded view of the fan motor assembly in the fan of the present invention. Figure 16 This is a three-dimensional diagram of the air outlet three-way seat in the fan motor assembly of the fan of the present invention. Figures 13 to 16As shown, the fan motor assembly 5 of the fan of the present invention includes: an air scoop cover 51, an air scoop 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 assembled in sequence along a first direction W. The air scoop cover 51 seals and connects the vortex channel 34 of the air inlet cover 3 with the air scoop cover 52.

[0110] A plurality of first positioning seats 501 and a plurality of first screw lugs 508 are provided around the outer circumference of the air outlet tee base 50. A motor 56 is positioned between the upper surface of the motor bracket 54 and the air outlet tee base 50. A plurality of second positioning seats 541 are positioned around the outer circumference of the motor bracket 54, and the motor bracket 54 has a through hole for the motor 56's rotating shaft to pass through. A rotating impeller 53 is positioned between the lower surface of the motor bracket 54 and the air scoop 52. The impeller 53 is connected to the motor 56 via a rotating shaft. A plurality of third positioning seats 521 and a plurality of second screw lugs 522 are provided around the outer circumference of the air scoop 52. The air outlet tee base 50 is screwed to the air scoop 52. Each second positioning seat 541 of the motor bracket 54 is connected to the first positioning seat 501 and the third positioning seat 521 via a flexible connector. The motor bracket 54 is then clamped and restrained between the first positioning seat 501 and the third positioning seat 521. The motor bracket 54 is suspended between the air outlet base and the air scoop 52 through multiple circumferential positioning points. In this embodiment, the motor bracket 54 is not fixed in place. Instead, it is positioned between the air scoop 52 and the air outlet tee 50 by means of flexible connectors on the same horizontal plane. This effectively places the motor bracket 54 suspended between the air scoop 52 and the air outlet tee 50. The flexible connectors and the various positioning seats together form a shock absorber, ensuring that when the fan motor assembly 5 is in operation, vibrations from the motor bracket 54 do not come into contact with the air scoop 52 or the air outlet tee 50. All contact points are transferred through the shock absorber, significantly reducing noise and maintaining fan stability.

[0111] In a preferred example, the first positioning seat 501 and the first screw ear 508 are both located at the same horizontal height of the air outlet tee seat 50; the second positioning seat 541 is both located at the same horizontal height of the motor bracket 54; the third positioning seat 521 and the second screw ear 522 are both located at the same horizontal height of the air guide cover 52, so that the assembly of the air outlet tee seat 50, the motor bracket and the air guide cover 52 can be completed on the same assembly surface.

[0112] In a preferred example, the first positioning seat 501 and the first screw ear 508 are spaced apart on the periphery of the air outlet tee seat 50; the third positioning seat 521 and the second screw ear 522 are spaced apart on the periphery of the air guide cover 52 to ensure that the three are assembled more horizontally and prevent the rotating shaft of the motor from tilting.

[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 planar motion when the power system vibrates, thereby balancing the vibration. The lower portion of the positioning vibration-damping pad 55 can be composed of a cone, and the surfaces it contacts are all convex contacts, the purpose of which is to reduce the contact area to achieve a shock-absorbing effect. The middle of the positioning vibration-damping pad 55 is composed of a hollow blind hole, the purpose of which is to allow the shock absorber to use the middle blind hole to produce elastic deformation when the power system vibrates, thereby achieving a shock-absorbing effect. After assembly, this hole forms a closed hollow hole with the upper support, the purpose of which is to lock the air in the blind hole and quickly restore the elastic deformation due to the action of air pressure during vibration.

[0114] In a preferred embodiment, the first, second, and third locating seats 501, 541, and 521 are each provided with a coaxial through-hole. The flexible connector is a nail-shaped locating and vibration-damping pad 55, which passes through and clamps the through-holes of the first, second, and third locating seats 501, 541, and 521. The locating and vibration-damping pad 55 comprises a rod portion, an outwardly flared cone, and an outwardly flared shoulder at each end of the rod portion. The maximum diameters of the outwardly flared cone and the outwardly flared shoulder are both larger than the diameter of the rod portion. The rod portion passes through the through-holes of the first, second, and third locating seats 501, 541, and 521, clamping the first, second, and third locating seats 501, 541, and 521 between the outwardly flared cone and the outwardly flared shoulder. A hollow blind hole is provided in the axial direction along the first direction W, extending at least from the outwardly flared cone to the rod portion. Alternatively, the hollow blind hole extends at least from the expanded frustum to the expanded frustum.

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

[0116] In this embodiment, the air outlet tee 50 includes an air inlet 507 located on the outlet side of the impeller, a first air outlet 504 and a second air outlet 505 respectively connected to the nozzle 7, and a diverter wall 502 that diverts the airflow passing through the air inlet 507 and directs it to the first air outlet 504 and the second air outlet 505. The two ends of the nozzle body 70 are connected to 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 50, the diverter wall 502 is located in the center of the second side of the air outlet tee 50, and the first air outlet 504 and the second air outlet 505 are respectively located at the two ends of the second side of the air outlet tee 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 direction of the first air outlet 504 and the air outlet direction of the second air outlet 505 are coaxial and perpendicular to the air inlet direction of the air inlet 507. A symmetrical first guide slope and a second guide slope are formed on both sides of the diverter wall 502. The first guide slope guides part of the air flow passing through the air inlet 507 to the first air outlet 504, and the second guide slope guides part of the air flow passing through the air inlet 507 to the second air outlet 505. The protrusions at both ends of the diverter wall 502 in the second direction X extend along the second direction X to the air inlet 507, forming a U-shaped plate-shaped diverter wall to divert the air flow passing through the air inlet 507 while reducing noise. In this embodiment, the diverter wall 502 is arranged based on the central axis of the air inlet 507, evenly dividing the flow area of ​​the air inlet 507. The inner wall of the air outlet tee 50 is provided with a guide plate 506 extending from the air inlet 507 to the second side of the air outlet tee 500, but the present invention is not limited thereto. The inner wall of the air outlet three-way seat 50 is provided with a sunken guide step extending from the first guide slope toward the first air outlet 504. The closer to the first air outlet 504, the greater the sinking distance of the sunken guide step. The inner wall of the air outlet three-way seat 50 is provided with a sunken guide step extending from the second guide slope toward the second air outlet 505. The closer to the second air outlet 505, the greater the sinking distance of the sunken guide step. This is to reduce the noise of the air flow turning and provide space for the base 6, but is not limited to this. The air outlet three-way seat 50 of the present invention integrates diversion and diversion, greatly reducing the height of the fan motor assembly 5, thereby further reducing the overall height and volume of the fan unit.

[0117] In a preferred embodiment, the inner wall of the air outlet three-way seat 50 is provided with a guide plate extending from the air inlet 507 to the first air outlet 504 or the second air outlet 505, but the present invention is not limited thereto.

[0118] The air inlet 507 is an annular orifice. The distance d from the annular orifice to the first or second air outlet 504 , 505 , along the first direction W is denoted by d. The diameters of the first and second air outlets 504 , 505 are denoted by h, and the ratio of d to h ranges from 2.0 to 3.5. After the airflow generated by the impeller 53 enters the air inlet 507 of the outlet tee 50 , it undergoes a rotation of at least 90° within a short distance. If the ratio of d to h is too small, the airflow pressure decreases, the airflow volume is reduced, and the air delivery distance is affected. Conversely, if the ratio of d to h is too large, negative vortices will form, creating turbulence and generating significant noise.

[0119] In a preferred embodiment, the ratio of d to h ranges from 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 FIG. 1 is a schematic diagram of the installation process of the fan of the present invention. Figures 17 to 20 As shown, the installation process of the fan of the present invention is as follows: first, the air intake cover 3, the air intake bracket 14, the fan motor assembly 5, and the base 6 are connected through the first inner shell 4. The nozzle 7 with an annular shoulder 74 at both ends is inserted horizontally into the semicircular limiting groove 41 exposed by 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 three-way seat 50 of the fan motor assembly 5, and are sealed by the sealing ring 59. Then, the second inner shell 4 is buckled with the first inner shell 4 and screwed through the screw hole 42, and the annular shoulder 74 is engaged in the annular groove formed by the combination of the two semicircular limiting grooves, so that the nozzle 7 can rotate based on the annular groove. Then, two outer shells 8 are buckled on the outer periphery of the inner shell 4, the side support frame 13 is installed, and then the upper end of the side support frame 13 and the upper end of the outer shell 8 are screwed together through the annular connecting frame 12. Finally, the filter 2 is placed into the space between the inner wall of the shell 8 and the outer periphery of the air intake cover 3, and the filter 2 is sealed and clamped between the top cover 11 and the air intake bracket 14 by rotating and locking the top cover 11 and the annular connecting frame 12.

[0122] The installation method of the present invention changes the practice of vertically sleeve-mounting the nozzle 7 on the body in the prior art, which is more conducive to sealing the air duct and reduces the difficulty of installation.

[0123] In summary, the purpose of the present invention is to provide a fan that can change the direction of movement of the air flow in the fan, reduce the overall volume, and reduce the cost of use.

[0124] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A fan, characterized in that: include: a body (10) comprising an air inlet, an air outlet, a fan motor assembly (5) for generating an air flow, and a base (6); a nozzle (7) connected to the air outlet, for receiving an air flow from the body (10) and emitting the air flow, wherein the nozzle (7) is rotated relative to the body (10) with the axis of the opening of the body (10) as a rotation axis to blow air in different directions; The fan motor assembly (5) comprises: An air outlet three-way seat (50), with a first positioning seat (501) and a first screw connection ear (508) provided around the outer periphery of the air outlet three-way seat (50); A motor bracket (54), wherein a motor (56) is arranged between the motor bracket (54) and the air outlet three-way seat (50), a second positioning seat (541) is 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; An air guide cover (52) is provided with a rotating impeller (53) between the air guide cover (52) and the motor bracket (54), the impeller (53) and the motor (56) are connected to each other through the rotating shaft, and a third positioning seat (521) and a second screw connection ear (522) are provided around the outer periphery of the air guide cover (52); the air outlet three-way seat (50) is screwed to 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 connecting member, and is clamped and limited between the first positioning seat (501) and the third positioning seat (521), and the motor bracket (54) is suspended between the air outlet three-way seat (50) and the air guide cover (52) through circumferential multi-point positioning, and also includes an air inlet cover (3) provided on the fan Upstream of the air inlet of the motor assembly (5), the air flow passes through the air intake cover (3) and the fan motor assembly (5) in sequence along a first direction, and enters the nozzle (7) along the air flow. The air flow moves in the nozzle (7) in a second direction opposite to the first direction and is then emitted from the nozzle (7). The first direction is the direction of gravity, and the second direction is the direction of anti-gravity. The air inlet is provided on the air intake cover (3), the air intake cover (3) is located at the upper part of the body (10) along the direction of gravity, and the air outlet is located at the lower part of the body (10) along the direction of gravity. The fan motor assembly (5) is located in the area between the air inlet and the air outlet. The base (6) rotates the fan motor assembly (5), the air intake cover (3) and the nozzle (7) horizontally by rotating the synchronous motor (63).

2. The fan according to claim 1, wherein The first positioning seat (501), the second positioning seat (541) and the third positioning seat (521) are respectively provided with coaxial through holes, and the flexible connecting member is a nail-shaped positioning vibration-damping pad (55), and the positioning vibration-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).

3. The fan according to claim 2, wherein The positioning vibration damping pad (55) comprises a rod portion and an outward-expanding cone and an outward-expanding shoulder respectively located at both ends of the rod portion, wherein the maximum diameter of the outward-expanding cone and the maximum diameter of the outward-expanding shoulder are both larger than the diameter of the rod portion, and 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 outward-expanding cone and the outward-expanding shoulder.

4. The fan according to claim 2, wherein The positioning vibration damping pad (55) is provided with a hollow blind hole in the axial direction along the first direction.

5. The fan according to claim 1, wherein An annular motor silencer cotton (57) is provided between the motor bracket (54) and the air outlet three-way seat (50) and around the outer periphery of the motor (56).

6. The fan according to claim 1, wherein The first positioning seat (501) and the first screw connection ear (508) are both located at the same level of the air outlet three-way seat (50); The second positioning seats (541) are all located at the same level as the motor bracket (54); The third positioning seat (521) and the second screw connection ear (522) are both located at the same level of the air guide cover (52).

7. The fan according to claim 1, wherein The first positioning seat (501) and the first screw connection ear (508) are spaced and distributed on the outer periphery of the air outlet three-way seat (50); The third positioning seat (521) and the second screw connection ear (522) are distributed at intervals on the outer periphery of the air guide cover (52).

8. The fan according to claim 7, wherein The air intake hood (3) is provided with a plurality of circumferentially distributed and spaced apart wave-shaped spoilers (32) along the outer periphery of the first direction, the wave-shaped spoilers (32) extending from the outer periphery of the air intake hood (3) toward the center, the gaps between adjacent wave-shaped spoilers (32) forming a vortex-arranged air intake channel (33), and the wave-shaped protrusion direction of each wave-shaped spoiler (32) is consistent with the rotation direction of the impeller (53).

Images