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 including an output air passage, an air inlet, an air outlet, and at least one positive air baffle, the air inlet receiving the air flow from the body portion, transmitting it through the output air passage to the air outlet and then emitting the air flow, the positive air baffle blocking a part of the air flow flowing towards the air outlet to adjust the air outlet angle of the air flow ejected from the air outlet; following the air flow into 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, flexibly adjust the air outlet angle, extend the service life of the filter screen, and reduce the use noise and 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 standards, people's requirements for quality of life are increasing day by day, and indoor air quality has become an important issue that people are concerned about. Air purifiers are small household appliances used to purify indoor air, mainly to solve indoor air pollution problems caused by decoration or other reasons.

[0003] 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 the air purifier.

[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 shell 903, a base 904, a filter 905, a fan motor 906 and a mesh liner 907. Among them, the shell 903 with an air inlet mesh is arranged on the base 904, the shell 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 nozzle 901. The indoor air passes through the mesh of the shell 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 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 a waste of the overall volume of the fan and an increase in the costs of product transportation and storage.

[0008] (3) Since the air inlet of the fan motor is located at a relatively low position, it is easier to inhale dust on the ground during air intake, 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 outer shell of this type of bladeless fan is a structure where two shells are horizontally joined. Each shell is provided with a filter screen. The filter screen is sealed between the downstream three-dimensional sealing strip and the mesh inner liner. The cost of the three-dimensional sealing 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 shells, replace the filter screens respectively, and then reinstall them. 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 purpose of the present invention is to provide a fan, which overcomes the problems of the prior art, can change the movement direction of the air flow inside the fan, reduce the overall height of the fan, shrink the overall volume, flexibly adjust the air outlet angle, extend the service life of the filter screen, and reduce the usage noise and 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, including an output air duct, an air inlet, an air outlet, and at least one positive air baffle. The air inlet receives the air flow from the body portion, transmits the air flow to the air outlet through the output air duct, and then emits the air flow. The positive air baffle blocks a part of the air flow flowing towards the air outlet to adjust the air outlet angle of the air flow ejected from the air outlet;

[0017] Entering the nozzle along with the air flow, the air flow moves at least based on a second direction opposite to the first direction and is then emitted from the nozzle.

[0018] Preferably, the positive air baffle is arranged on the inner wall of the output air duct and on the same side as the air outlet, and the positive air baffle is located upstream of the air outlet.

[0019] Preferably, the plane where the positive air baffle is located is perpendicular to the guiding direction of the output air duct.

[0020] Preferably, the nozzle further includes a rotating member for adjusting the angle between the positive air baffle and the guiding direction of the output air duct.

[0021] Preferably, the rotating member is arranged on the inner wall of the output air duct and on the same side as the air outlet, and the rotating member is connected to the positive air baffle.

[0022] Preferably, as the positive air baffle blocks more of the air flow, the included angle between the air flow direction ejected from the air outlet and the axis of the air outlet decreases.

[0023] Preferably, as the positive air baffle blocks less of the air flow, the included angle between the air flow direction ejected from the air outlet and the axis of the air outlet increases.

[0024] Preferably, a plurality of positive air baffles are sequentially arranged in the output air duct along the guiding direction of the output air duct.

[0025] Preferably, along the guiding direction of the output air duct, the heights of the positive air baffles increase in sequence.

[0026] Preferably, the air outlet is provided with a retracted shoulder, and the retracted depth of the retracted shoulder is less than the height of the positive air baffle.

[0027] Preferably, the retracted depth of the retracted shoulder is 5 mm to 12 mm, and the height of the positive air baffle is 15 mm to 25 mm.

[0028] Preferably, the retracted depth of the retracted shoulder is 7 mm, and the height of the positive air baffle is 18.5 mm.

[0029] Preferably, the shape of the nozzle is an inverted U shape, and the two air inlets of the nozzle are respectively communicated with both sides of the body portion.

[0030] 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 use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0032] Figure 1 It is a cross-sectional view of a bladeless fan in the prior art.

[0033] Figure 2 It is a schematic diagram of the internal air duct of the fan of the present invention.

[0034] Figure 3 This is a perspective view of the fan of the present invention.

[0035] Figure 4 is Figure 3 a sectional view taken along line A-A in

[0036] Figure 5 This is an exploded view of the fan of the present invention.

[0037] Figure 6 This is a schematic diagram of the combination of the air intake cover and the air intake bracket in the fan of the present invention.

[0038] Figure 7 This is a schematic diagram of the separation of the air intake cover and the air intake bracket in the fan of the present invention.

[0039] Figure 8 This is a schematic diagram of the first modification example of the air intake cover in the fan of the present invention.

[0040] Figure 9 This is a schematic diagram of the second modification example of the air intake cover in the fan of the present invention.

[0041] Figure 10 This is a sectional view of the fan motor assembly of the present invention.

[0042] Figure 11 is Figure 10 a sectional view taken along line B-B in

[0043] Figure 12 This is a partial exploded view of the fan motor assembly in the fan of the present invention.

[0044] Figure 13 This is a perspective view of the motor cover in the fan of the present invention.

[0045] Figure 14 This is a schematic diagram of the principle of the fan motor assembly in the fan of the present invention guiding the flow to the nozzle.

[0046] Figure 15 This is a perspective view of the nozzle in the fan of the present invention.

[0047] Figure 16 This is an exploded schematic diagram of the nozzle in the fan of the present invention.

[0048] Figure 17 This is a partial sectional view of the first nozzle in the fan of the present invention.

[0049] Figure 18 This is a partial sectional view of the second nozzle in the fan of the present invention.

[0050] Figure 19Schematic diagram of the second nozzle in the fan of the present invention for increasing the injection angle.

[0051] Figure 20 Schematic diagram of the second nozzle in the fan of the present invention at the maximum injection angle.

[0052] Reference numerals

[0053] 10 Body part 504 First air outlet

[0054] 11 Top cover 505 Second air outlet

[0055] 12 Ring connecting frame 51 Air guide mask

[0056] 13 Side support frame 52 Air guide cover

[0057] 14 Intake support 53 Impeller

[0058] 141 Central opening 54 Motor support

[0059] 142 First buckle 55 Positioning damping pad

[0060] 143 Second buckle 56 Motor

[0061] 2 Filter 58 Motor cover

[0062] 3 Intake cover 581 First guide vane

[0063] 30 Ring-shaped side wall 582 Second guide vane

[0064] 31 Sound absorption hole 583 Air outlet hole

[0065] 311 Sound absorption hole 6 Base

[0066] 312 Sound absorption hole 7 Nozzle

[0067] 32 Circular limit groove 70 Nozzle body

[0068] 33 Bayonet 71 Air outlet

[0069] 34 Substrate 72 Output air duct

[0070] 35 Opening part 73 Positive wind baffle

[0071] 4 Inner shell 74 First air inlet

[0072] 5 Fan motor assembly 75 Second air inlet

[0073] 50 Air outlet tee 76 Rotating part

[0074] 502 Shunt wall body 77 Retracted shoulder platform

[0075] 503 Sunken diversion step 8 Outer shell Detailed implementation manners

[0076] 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. On the contrary, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their repetitive description will be omitted.

[0077] Figure 2 Schematic diagram of the internal air duct of the fan of the present invention. As Figure 2 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, and an outer shell 8 for providing an air outlet. Air inlet holes are provided on both sides of the outer shell 8, and the filter 2 is disposed at a corresponding position inside the air inlet holes in the outer shell 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 for receiving the air flow from the body 10 and ejecting the air flow. As the air flow enters the nozzle 7, the air flow moves at least based on the second direction X opposite to the first direction W and is then ejected from the nozzle 7, and 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 in the upper part of the body 10 along the direction of gravity. The air outlet is located in the lower part of the outer shell 8 of the body 10 along the direction of gravity on both sides, and the fan motor assembly 5 is located in the area between the air inlet and the air outlet positions. The nozzle 7 has at least one output air duct 72, and the extending direction of the output air duct 72 is parallel to the first direction W, and the air flow passes through the output air duct 72 in the second direction X. Through a duct design completely different from the prior art, the fan of the present invention inverts the air suction direction of the fan motor assembly 5, performs high air 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 exhausts from the lower part of the body 10 into the nozzle 7, and then the air flow flows from bottom to top through 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. And, on the premise of the same height, the present invention can implement a larger nozzle 7 to enhance the air supply capacity.

[0078] 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, but not limited thereto.

[0079] 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 horizontal height as the fan motor assembly 5, or even at a horizontal height lower than that of the fan motor assembly 5. Through the improvement of the air duct, the present invention divides the long air flow path in the prior art, where the air flow passes through the fan motor assembly and the nozzle in a single direction successively, into at least two short air flow paths with opposite directions. The two short 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, greatly reducing the overall height of the fan, lowering the center of gravity of the product, and improving the stability of the standing posture of the product. Moreover, the air inlet at the upper position does not suck in the dust on the ground during inhalation, reducing the usage load of the filter screen, eliminating the need for frequent replacement of the filter screen, and greatly reducing the usage cost of the filter screen of the bladeless fan.

[0080] The air outlet of the fan motor assembly 5 is connected to two guiding air ducts, and the guiding air ducts are respectively communicated with the openings on both sides of the body 10. The nozzle 7 has a semi-frame-shaped nozzle body 70, and the nozzle body 70 straddles the first side surface 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 a 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 together form at least one U-shaped combined air duct, but not limited thereto. The shape of the nozzle body 70 in this embodiment is an inverted U shape, and the nozzle body 70 can rotate by a certain angle relative to the body 10 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 hole 71 opening along a fourth direction Z, and the fourth direction Z is perpendicular to the plane formed by the first direction W and the third direction Y together. The air outlet holes 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.

[0081] In a preferred example, the nozzle body 70 has a first state spanning the first side 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 of moving in and out of the body 10 along the second direction while avoiding the nozzle body 70 along the second direction. 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 and removed from the body 10 along the second direction X, but this is not limiting.

[0082] In a preferred example, the accommodation space has two replacement channels for the filter 2 to enter and exit the accommodation space (the U-shaped nozzle body 70 naturally has two super-large openings connecting to the internal accommodation space). The extending direction of the replacement channels is perpendicular to the second direction. The filter 2 has a first stroke of moving in and out of the accommodation space from the body 10 along the second direction, and a second stroke of moving in and out of the accommodation space from the replacement channels. The height of the accommodation space 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 and the width of the replacement channels are both greater than the width of the filter 2.

[0083] Figure 3 Is a perspective view of the fan of the present invention. Figure 4 Is Figure 3 The cross-sectional view taken along the line A-A in Figure 5 Is an exploded view of the fan of the present invention. As Figures 3 to 5 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 an air flow, an intake bracket 14, an intake hood 3 providing an air inlet, a filter 2, and a top cover 11. The present invention makes full use of the idle central area of the nozzle 7 in the prior art, and the entire body 10 is arranged in the central area of the nozzle 7. 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.

[0084] Two inner shells 4 that can be mutually engaged are engaged with both sides of the fan motor assembly 5 and the base 6. After the inner shells 4 are engaged and screwed together, the fan motor assembly 5 is limited above the base 6. After the two inner shells 4 are engaged, an annular groove is formed. First air inlets 74 and second air inlets 75 are respectively arranged on the inner sides of both ends of the nozzle body 70, and the first air inlets 74 and the second air inlets 75 are respectively connected to an opening on each side of the body 10.

[0085] Two outer shells 8 that can be mutually engaged are engaged with the outer circumference of the inner shells 4. The outer shells 8 cover the intake hood 3 and the fan motor assembly 5. Mesh-shaped air inlets are provided in the area of each outer shell 8 corresponding to the intake hood 3.

[0086] The filter 2 surrounds the air inlet hood 3, and the filter 2 is arranged upstream of the air inlet of the air inlet hood 3. The filter 2 is a tubular air filter screen 23. A first annular support frame 22 for fixing a first annular seal 21 is provided on the first side of the tubular air filter screen 23. 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. The medium of the tubular air filter screen 23 can be existing air filtering materials or air filtering materials invented in the future, and is not limited thereto.

[0087] Figure 6 It is a schematic diagram of the combination of the air inlet hood and the air inlet bracket in the fan of the present invention. Figure 7 It is a schematic diagram of the separation of the air inlet hood and the air inlet bracket in the fan of the present invention. As Figure 6 and 7 shown, in this embodiment, the air inlet hood 3 is arranged downstream of the air inlet and upstream of the air inlet of the fan motor assembly 5. The air inlet hood 3 is provided with sound absorption holes 31. After the air flow passes through the sound absorption holes 31, it passes through the body 10 along the first direction. The sound absorption holes 31 are arranged in an array on the surface of the air inlet hood 3 to form a sound absorption hole 31 array, and the sound absorption hole 31 array surrounds the air inlet hood 3. The sound absorption holes 31 are variable-diameter through holes. The opening area of the outer wall of each sound absorption hole 31 is larger than the opening area of the inner wall. The opening diameter of each sound absorption hole 31 on the outer wall of the air inlet hood 3 is 2.5 mm to 4 mm, and the opening diameter on the inner wall of the air inlet hood 3 is 1 mm to 2.5 mm. In a preferred solution, the opening diameter of the sound absorption hole 31 on the outer wall of the air inlet hood 3 is 2.8 mm to 3.0 mm, and the opening diameter on the inner wall of the air inlet hood 3 is 2.5 mm, so that each sound absorption hole 31 has a better sound absorption and noise reduction function to obtain a better overall machine silent effect.

[0088] In order to obtain an optimal effect between the air intake volume and the volume, the flow cross-sectional area of the air inlet of the fan motor assembly 5 is S1, and the sum of the flow cross-sectional areas of all the sound absorption holes 31 is S2, and S2≥S1. In a preferred solution, the sum of the flow cross-sectional areas of all the sound absorption holes 31, S2, is greater than or equal to 2.5 times the flow cross-sectional area S1 of the air inlet, thereby further ensuring a better silent effect.

[0089] Moreover, the top cover 11 is rotationally engaged with the body 10. The substrate 34 supports the top cover 11. A limiting member is provided on one side of the top cover 11 that presses against the tubular air filter. The substrate 34 is provided with a circular limiting groove 32 to guide the limiting member to rotate within the range of the circular limiting groove 32. As the limiting member rotates, the top cover 11 is engaged with or separated from the body 10. The intake bracket 14 supports the second side of the tubular air filter along the second direction. The annular upper end surface of the tubular air filter 23 and the substrate 34 of the intake hood 3 are both sealed with the top cover 11. A seal is provided between the annular lower end surface of the tubular air filter 23 and the opening 35 of the intake hood 3 and the intake bracket 14. The intake hood 3 provides support and rotational guidance for the top cover 11, strengthening the overall strength of the product and the special functionality of replacing the filter. The fan of the present invention replaces the new tubular air filter 23 by rotating and opening the top cover 11.

[0090] The intake bracket 14 is provided with a plurality of first buckles 142 surrounding the central opening 141 and a plurality of second buckles 143 arranged outside the first buckles 142. The bayonet of the opening 35 of the intake hood 3 is buckled with the first buckles 142 of the intake bracket 14. The lower surfaces of the two side support frames 13 are connected to the second buckles 143 of the intake bracket 14. The height of the housing 8 is greater than the height of the fan motor assembly 5. A space for accommodating the filter 2 and the intake hood 3 is provided between the upper two side support frames 13 of the enclosed housing 8. The lower surface of the intake bracket 14 is provided with connecting columns, and the intake hood 3 is connected to the upper surface of the intake bracket 14, so that the intake hood 3 can be connected to the air inlet of the fan motor assembly 5 through the intake bracket 14.

[0091] In order to enhance the air flow velocity and the sound insulation effect, the intake hood 3 of the present invention can adopt the following structure:

[0092] Figure 8 It is a schematic diagram of the first deformation example of the intake hood in the fan of the present invention. As Figure 8 shown, the intake hood 3 is an inverted bucket-shaped member, including an annular side wall 30, an opening 35 located at the lower end of the annular side wall 30, and a substrate 34 located at the upper end of the annular side wall 30. The opening 35 is sealed and communicated with the central opening 141 of the intake bracket 14, and the opening 35 covers the air inlet of the fan motor assembly 5. An air inlet space is formed between the air inlet and the substrate 34. Each sound absorption hole 311 on the intake hood 3 is a variable-diameter through hole arranged in the direction radially outward along the motor rotation axis. The opening on the outer wall of the intake hood 3 is larger than the opening on the inner wall of the intake hood 3 to obtain a better sound insulation effect.

[0093] Figure 9 It is a schematic diagram of the second deformation example of the intake hood in the fan of the present invention. As Figure 9As shown, the air intake hood 3 is a frustum-shaped part, including a frustum-shaped annular side wall 30, an opening 35 at the lower end of the annular side wall 30, and a base plate 34 at the upper end of the annular side wall 30. The opening 35 covers the air intake of the fan motor assembly 5, and an air inlet space is formed between the air intake and the base plate 34. Each sound-absorbing hole 312 on the air intake hood 3 is not only a variable-diameter through hole, with the opening on the outer wall of the air intake hood 3 being larger than the opening on the inner wall of the air intake hood 3, but also the guiding direction of each sound-absorbing hole 312 points to the air intake of the fan motor assembly 5, defining that the air flowing through the sound-absorbing hole 31 converges towards the air intake of the fan motor assembly 5, so as to achieve a better balance between the air flow velocity and the sound insulation effect, and improve the overall performance and user experience of the whole machine.

[0094] Figure 10 It is a sectional view of the fan motor assembly of the present invention. Figure 11 is Figure 10 The sectional view taken along the line B-B in Figure 12 It is a partial exploded view of the fan motor assembly in the fan of the present invention. Figure 13 It is a three-dimensional view of the motor cover in the fan of the present invention. Figure 14 It is a schematic diagram of the air guiding principle of the fan motor assembly in the fan of the present invention towards the nozzle. As Figures 10 to 14 shown, the fan motor assembly 5 in the fan of the present invention includes: a wind guiding mask 51, a wind guiding cover 52, an impeller 53, a motor bracket 54, a motor 56, a motor cover 58, and an air outlet tee 50, which are sequentially combined in the first direction W, and the above components are mainly combined through a positioning damping pad 55. The wind guiding mask 51 is hermetically connected to the vortex channel 34 of the air intake hood 3 and the wind guiding cover 52. The motor bracket 54 and the motor cover 58 jointly form a housing for accommodating the motor 56. The housing is provided with a first guiding vane 581 and a second guiding vane 582 that respectively guide air to two air outlets. Part of the air flow generated by the impeller is guided by the first guiding vane 581 and then transported to the first air outlet 504 along the first path 5a nearby, and the remaining part of the air flow generated by the impeller is guided by the second guiding vane 582 and then transported to the second air outlet 505 along the second path 5b nearby.

[0095] Each guiding vane inclines towards the nearby air outlet, and the included angle range between the inclined surface of the guiding vane and the vertical plane is 10° to 45°. In a preferred example, according to the circumference of the motor cover 58, there are guiding vanes that are equally divided and mirror-inclined. The guiding vanes are equally divided and mirror-distributed in four quadrants respectively. The included angle range between the inclined surface of the guiding vane and the vertical plane is 20°, so as to guide the wind of the impeller to the air outlets on both sides, making the air outlet uniform and reducing noise.

[0096] In this embodiment, the first path 5a and the second path 5b are separated by different guide vanes in cooperation with the housing. At least part of the first path 5a is jointly defined by the outer surface of the housing of the motor bracket 54 and the motor cover 58 and the first guide vane 581 of the motor cover 58. At least part of the second path 5b is jointly defined by the outer surface of the housing of the motor bracket 54 and the motor cover 58 and the second guide vane 582 of the motor cover 58.

[0097] The fan motor assembly 5 further includes an air outlet tee seat 50 located downstream of the housing. The air outlet tee seat 50 includes an air inlet for receiving an air flow, a first air outlet 504 and a second air outlet 505 respectively communicating with the nozzle 7, and a flow dividing wall body 502 for guiding the air flow to the first air outlet 504 and the second air outlet 505 respectively after the air flow is divided. Both ends of the nozzle 7 are respectively communicated with the first air outlet 504 and the second air outlet 505. The air flowing through the first guide vane 581 along the first path 5a is guided to the first air outlet 504 along one side of the flow dividing wall body 502, and the air flowing through the second guide vane 582 along the second path 5b is guided to the second air outlet 505 along the other side of the flow dividing wall body 502. The fan motor assembly 5 further includes an air inlet. The flow dividing wall body 502 is arranged based on the central axis of the air inlet and evenly divides the flow area of the air inlet. Symmetrical first guiding slopes and second guiding slopes are respectively formed on both sides of the flow dividing wall body 502. The first guiding slope guides part of the air flow passing through the air inlet to the first air outlet 504, and the second guiding slope guides part of the air flow passing through the air inlet to the second air outlet 505, so as to divide the air flow passing through the air inlet on the premise of reducing noise. The inner wall of the air outlet tee seat 50 is provided with a sunken guiding step extending from the first guiding slope to the first air outlet 504, and the sunken distance of the sunken guiding step is larger when it is closer to the first air outlet 504; the inner wall of the air outlet tee seat 50 is provided with a sunken guiding step extending from the second guiding slope to the second air outlet 505, and the sunken distance of the sunken guiding step is larger when it is closer to the second air outlet 505, so as to reduce the noise when the air flow turns and provide space for the base 6, but not limited thereto.

[0098] The heat generated by the motor is discharged along the S direction. After being divided by the flow dividing wall body 502 of the air outlet tee seat 50, it respectively reaches the first air outlet 504 and the second air outlet 505 along the sunken guiding step. The air flow generated by the impeller 53 is along the R direction ( Figure 13 、 14(in the direction of the center dash-dotted arrow) successively pass through the outer surface of the housing of the motor bracket 54 and the motor cover 58 and the first guide vane 581 and the second guide vane 582 of the motor cover 58, and then reach the first air outlet 504 and the second air outlet 505 respectively. The second part of the air flow does not need to be redirected by aligning with the diversion wall 502. In this embodiment, the S direction is similar to the R direction, so that the movement of the air flow along the R direction helps to more efficiently carry out the heat generated by the motor 56 between the motor bracket 54 and the motor cover 58, which helps to cool the motor. By diverting and redirecting the air flow respectively, the present invention effectively reduces the noise and can accelerate the speed of the air flow passing through the air outlet tee 50 to the nozzle 7. The air outlet tee 50 in the present invention integrates diversion, splitting and integration, greatly reducing the height of the fan motor assembly 5, and further reducing the total height and volume of the whole fan.

[0099] Figure 15 It is a three-dimensional view of the nozzle in the fan of the present invention. Figure 16 It is an exploded schematic view of the nozzle in the fan of the present invention. Figure 17 It is a partial cross-sectional view of the first type of nozzle in the fan of the present invention. As Figures 15 to 20 shown, the nozzle 7 of the present invention includes an output air duct 72, a first air inlet 74, a second air inlet 75, an air outlet 71 and at least one positive air baffle 73. The shape of the nozzle 7 is an inverted U shape. The two air inlets of the nozzle 7 are respectively communicated with both sides of the body 10. The air inlets receive the air flow from the body 10, transmit it to the air outlet 71 through the output air duct 72 and then emit the air flow. The positive air baffle 73 blocks part of the air flow flowing to the air outlet 71 and adjusts the air outlet angle of the air flow ejected from the air outlet 71. As the air flow enters the nozzle 7, the air flow moves at least based on a second direction opposite to the first direction and then is ejected from the nozzle 7. The positive air baffle 73 is arranged on the inner wall of the output air duct 72 and on the same side as the air outlet 71. The positive air baffle 73 is located upstream of the air outlet 71. The plane where the positive air baffle 73 is located is perpendicular to the guiding direction of the output air duct 72. The positive air baffle 73 can straighten the air outlet angle and reduce the included angle a between the air outlet direction of the air flow ejected from the air outlet 71 and the axis of the air outlet 71 to 15°. (If the positive air baffle 73 is not provided, the included angle between the air outlet direction of the air flow ejected from the air outlet 71 and the axis of the air outlet 71 may exceed 45°. At this time, the fan can only be used as a low-position standing fan and cannot be used as a table fan).

[0100] In a preferred embodiment, a plurality of positive air baffles 73 are successively arranged in the output air duct 72 along the guiding direction of the output air duct 72. Along the guiding direction of the output air duct 72, the heights of the positive air baffles 73 increase successively.

[0101] In a preferred embodiment, the air outlet 71 is provided with a retracted shoulder 77. The retracted depth of the retracted shoulder 77 is less than the height of the positive wind baffle 73. The retracted depth of the retracted shoulder 77 is 5 mm to 12 mm, and the height of the positive wind baffle 73 is 15 mm to 25 mm. In this embodiment, the retracted depth of the retracted shoulder 77 is 7 mm, and the height of the positive wind baffle 73 is 18.5 mm, so as to further reduce the angle a between the air flow direction ejected from the air outlet 71 and the axis of the air outlet 71.

[0102] Figure 18 It is a partial cross-sectional view of the second nozzle in the fan of the present invention. Figure 19 It is a schematic diagram of increasing the ejection angle of the second nozzle in the fan of the present invention. Figure 20 It is a schematic diagram of the second nozzle in the fan of the present invention when it is at the maximum ejection angle. As Figures 18 to 20 shown, the nozzle 7 of the present invention further includes a rotating member 76 for adjusting the angle between the positive wind baffle 73 and the guiding direction of the output air duct 72. The rotating member 76 is arranged on the inner wall of the output air duct 72 and on the same side as the air outlet 71, and the rotating member 76 is connected to the positive wind baffle 73. As the positive wind baffle 73 blocks more air flow, the angle a between the air flow direction ejected from the air outlet 71 and the axis of the air outlet 71 decreases (for example, decreases to 15°). In contrast Figures 19 to 20 , as the positive wind baffle 73 blocks less air flow, the angle a between the air flow direction ejected from the air outlet 71 and the axis of the air outlet 71 increases (for example, increases to 45°). The present invention rotates the positive wind baffle 73 in the output air duct 72 through the rotating member 76 to adjust the air flow of the output air duct 72 near the air outlet 71 by the positive wind baffle 73, so as to adjust the air outlet angle to an angle suitable for human comfort, so that the fan of the present invention can be applied to both table fans and floor fans in two different usage scenarios.

[0103] In summary, the purpose of the present invention is to provide a fan that can change the movement direction of the air flow in the fan, reduce the overall volume, and reduce the usage cost.

[0104] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. 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 belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should 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, and the rotation axis of the motor (56) of the fan motor assembly (5) being parallel to the first direction; and A nozzle (7) including an output air passage (72), an air inlet, an air outlet (71), and at least one positive air baffle (73), the air inlet receiving the air flow from the body portion (10), transmitting the air flow through the output air passage (72) to the air outlet (71) and then emitting the air flow, the positive air baffle (73) blocking a part of the air flow flowing towards the air outlet (71) to adjust the air outlet angle of the air flow ejected from the air outlet (71), the positive air baffle (73) being provided on the inner wall of the output air passage (72) and on the same side as the air outlet (71), the positive air baffle (73) being located upstream of the air outlet (71), the plane where the positive air baffle (73) is located being perpendicular to the guiding direction of the output air passage (72), and the positive air baffle (73) guiding the air outlet angle to reduce the angle between the air outlet direction of the air flow ejected from the air outlet (71) and the axis of the air outlet (71); As the air flow enters the nozzle (7), the air flow moves at least based on a second direction opposite to the first direction and is then emitted from the nozzle (7).

2. The fan according to claim 1, wherein A plurality of positive air baffles (73) are sequentially provided in the output air passage (72) along the guiding direction of the output air passage (72).

3. The fan according to claim 2, wherein, Along the guiding direction of the output air passage (72), the height of the positive air baffle (73) increases sequentially.

4. The fan according to claim 1, wherein, The air outlet (71) is provided with a retracted shoulder (77), and the retracted depth of the retracted shoulder (77) is less than the height of the positive air baffle (73).

Images