Pressurizing piece and portable fan

Abstract

The utility model relates to the technical field of fans, in particular to a pressurizing piece and a portable fan, the pressurizing piece provided by the utility model comprises a pressurizing seat, and the radial radius of at least part of the pressurizing seat is gradually increased along the axial direction of the pressurizing piece; the plurality of stationary blades are arranged on the pressurizing seat at intervals; the connecting cover is wound outside the pressurizing seat through the stationary blade; and the axial length of the stationary blade is greater than that of the pressurizing seat. The air guide and supply distance between the whole pressurizing piece and the fan in the portable fan is reduced, and the loss of the air supplied by the fan when the air is transmitted between the fan and the pressurizer is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, especially a kind of pressurizing piece and portable fan. BACKGROUND

[0002] At present, some portable fans on market are provided with air guide structure inside corresponding fan, can guide the wind sent by fan, then send to outside, to achieve the purpose of combing airflow and guiding airflow.

[0003] But the air guide structure increased inside this kind of portable fan and fan always exist certain gap, and the setting of existing air guide structure cannot reduce the gap, so that the wind volume sent is easy to be lost when transmitting between fan and air guide structure. SUMMARY

[0004] To solve the problem that the gap between the air guide structure and the fan cannot be reduced in some existing portable fans, which causes the wind volume sent by the fan to be easily lost when transmitting between the fan and the air guide structure, the utility model provides a pressurizing piece and a portable fan.

[0005] The technical problem of the utility model is solved by providing a pressurizing piece, comprising:

[0006] The radial radius of at least part of the pressurizing seat gradually increases along the axial direction of the pressurizing piece.

[0007] A plurality of stationary vanes are arranged at intervals on the pressurizing seat.

[0008] A connecting cover is wrapped outside the pressurizing seat by the stationary vanes.

[0009] The axial length of the stationary vanes is greater than the axial length of the pressurizing seat.

[0010] Preferably, the axial length of the stationary vanes gradually increases from the stationary vane root end to the stationary vane top end.

[0011] Preferably, the axial length of the stationary vane root end of the stationary vane is equal to the axial length of the pressurizing seat, and the axial length of the stationary vane top end of the stationary vane is greater than the axial length of the pressurizing seat.

[0012] Preferably, the stationary vane includes a connecting portion and an extension portion, and the extension portion corresponds to the part of the pressurizing seat where the radial radius gradually increases.

[0013] The vane top end of the connecting part is connected with the connecting cover, and the vane root end of the connecting part is connected with the pressurizing seat; the vane top end of the extending part is not connected with the connecting cover, the vane root end of the extending part is connected with the pressurizing seat, and the extending part extends axially in a direction in which the radial radius of the pressurizing seat gradually decreases to extend out of the pressurizing seat.

[0014] Preferably, the connecting part is linear, and the extending part is arc-shaped; the radial height of the extending part gradually increases in a direction in which the radial radius of the pressurizing seat gradually decreases.

[0015] Preferably, the installation angle of the extending part of the vane is 20°-25°.

[0016] Preferably, the pressurizing seat comprises a front end and a rear end, the boundary radial diameter of the outer surface of the front end of the pressurizing seat is 36mm-40mm, and the boundary radial diameter of the outer surface of the rear end of the pressurizing seat is 31mm-35mm.

[0017] Preferably, the distance between the outer surface of the front end of the pressurizing seat and the inner surface of the connecting cover is 5.8mm-7.8mm.

[0018] Preferably, the axial length of the pressurizing seat is 20.7mm-22.7mm, and the axial length of the vane is 23.2mm-25.2mm.

[0019] The utility model discloses still provide a portable fan for solving above-mentioned technical problem, including the pressurizing piece as any one described above, still include fan subassembly, the fan subassembly with the pressurizing piece is sequentially arranged along the axial direction, the fan subassembly includes rotary seat and multiple fan blades, and the radial radius of at least part of the rotary seat gradually increases along the axial direction of the rotary seat.

[0020] Compared with the prior art, the pressurizing piece and the portable fan provided by the utility model have the following advantages:

[0021] 1. The pressurizing component provided in this embodiment has a radial radius that gradually increases along the axial direction of at least a portion of the pressurizing seat, allowing the air delivered by the fan to gradually pressurize on the pressurizing seat. This facilitates airflow management, ensuring a smoother flow through the pressurizing seat and enhancing airflow stability, resulting in a more uniform oncoming airflow. Furthermore, by setting the axial length of the stationary blades on the pressurizing seat to be greater than the axial length of the pressurizing seat, the stationary blades can extend beyond the pressurizing seat and penetrate deeper into the portable fan. This ensures that even when the closest distance between the pressurizing seat and the fan assembly reaches its maximum, the stationary blades can still extend beyond the pressurizing seat, reducing the gap between the stationary blades and the fan blades in the portable fan. This, in turn, reduces the airflow guiding and delivery distance between the pressurizing component as a whole and the fan assembly in the portable fan, allowing for a more efficient transition of the airflow delivered by the fan blades to the pressurizing component. This reduces the loss of airflow during transmission between the fan and the pressurizer.

[0022] 2. By setting the axial length of the stator blades to gradually increase from the root to the tip, the length and area of ​​the stator blades extending beyond the pressure base gradually increase from the root to the tip, thereby gradually increasing the airflow guide area beyond the pressure base and facilitating efficient airflow guidance. Furthermore, this increasing direction aligns with the gradual increase in airflow volume from the root to the tip of the stator blades on the fan, resulting in a smoother transition between the airflow delivery and guidance.

[0023] 3. By setting the axial length of the root end of the stationary blade to be equal to the axial length of the pressure base, the root end of the stationary blade is set to fit against the surface of the pressure base without protruding beyond the boundaries of both ends of the pressure base. This avoids the blade root protruding and increasing the width of the gap between the pressure base and the fan, and also makes the overall pressure component more aesthetically pleasing. Furthermore, by setting the axial length of the tip of the stationary blade to be greater than the axial length of the pressure base, the axial length of the stationary blade, except for the root end connected to the surface of the pressure base, is greater than the axial length of the pressure base. Thus, the pressure component in this embodiment can reduce the air guiding distance between the stationary blade on the pressure base and the blades on the fan without affecting the gap between the pressure component and the fan assembly.

[0024] 4. By setting up a connecting part and an extension part, both can respectively achieve the connection function with the connecting cover and the air guiding function with the upper blades of the fan, thus avoiding the mutual interference between the air guiding at the rear end of the pressurizing component and the connection at the front end.

[0025] 5. By setting the connecting part to be straight, the connecting part has better strength and rigidity, which can effectively resist the axial load of the connecting cover and improve the firmness and stability of the connection between the two; and by setting the extension part to be arc-shaped, the airflow delivered by the fan blades can be guided more effectively, increasing the smoothness and stability of the airflow.

[0026] 6. By setting the installation angle of the extension of the stator blade to 20°-25°, the airflow delivered by the fan blade can be effectively guided, and the airflow can be naturally transitioned from the arc-shaped extension to the straight connection, making the airflow of the stator blade more natural and smooth.

[0027] 7. By setting the radial diameter of the outer surface of the front end of the pressurizing seat to 36mm-40mm and the radial diameter of the outer surface of the rear end of the pressurizing seat to 31mm-35mm, the upper and lower limits of the pressurizing of the pressurizing component 10 are limited, so that the airflow through the pressurizing seat 11 can achieve stable pressurization within a small range, thereby making the final delivered airflow velocity and air pressure more stable.

[0028] 8. By limiting the distance between the outer surface of the front end of the pressure seat and the inner surface of the connecting cover to 5.8mm-6.8mm, the size of the final air outlet is limited, so that the air outlet within this range can effectively concentrate the airflow, increase the wind speed, and make the user feel a stronger wind.

[0029] 9. This utility model also provides a portable fan, which has the same beneficial effects as the above-mentioned pressurizing component, and will not be described in detail here. [Attached Image Description]

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural diagram of the pressure-applying component provided in the first embodiment of this utility model.

[0032] Figure 2 This is a cross-sectional view of the pressure member provided in the first embodiment of this utility model. Figure 1 .

[0033] Figure 3 This is a cross-sectional view of the pressure member provided in the first embodiment of this utility model. Figure 2 .

[0034] Figure 4is a side view of the pressurizing piece provided by the first embodiment of the utility model.

[0035] Figure 5 is a perspective structure schematic view of the portable fan provided by the second embodiment of the utility model.

[0036] Figure 6 is a cutaway schematic view of the fan blade assembly of the portable fan provided by the second embodiment of the utility model.

[0037] The drawing mark explanation is as follows:

[0038] 1, fan blade assembly;2, power supply part;3, portable fan;

[0039] 10, pressurizing piece;11, pressurizing seat;12, stationary blade;13, connecting cover;40, fan assembly;70, motor;90, display assembly;41, rotating seat;42, fan blade;43, mounting groove;

[0040] 111, front end;112, rear end;113, mounting cavity;121, stationary blade root end;122, stationary blade top end;123, blade tip angle;124, stationary blade tail end;125, stationary blade head end;126, connecting part;127, extension part;131, air expansion port.

DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0042] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and similar expressions as used herein are for purposes of explanation only.

[0043] In the utility model, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0044] And, the above-mentioned partial terms can be used to represent other meanings in addition to the orientation or positional relationship, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the utility model can be understood according to the specific circumstances.

[0045] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0046] Please refer to Figure 1 and Figure 2 , the utility model provides a kind of pressurizing piece 10, comprising: pressurizing seat 11, at least part of the radial radius of pressurizing seat 11 gradually increases along the axial direction of pressurizing piece 10;Multiple static blades 12 are arranged at intervals on pressurizing seat 11;Connecting cover 13 is around pressurizing seat 11 by the static blade 12;Wherein, the axial length W1 (such as Figure 2 W1) of static blade 12 is greater than the axial length W2 (such as Figure 2 W2) of pressurizing seat 11.

[0047] Specifically, connecting cover 13 is hollow annular structure, because it can be around pressurizing seat 11. Multiple static blades 12 are arranged at intervals and connected with the connecting cover 13, and the interval between any two adjacent static blades 12 forms multiple air outlet openings, for the wind flow after being pressurized by pressurizing piece 10 to enter the outside. And the connecting cover 13 provided can realize the connection of pressurizing piece 10 and other components of portable fan 3. In addition, it can also fix the static blade 12 on pressurizing seat 11, prevent the static blade 12 from shaking, strengthen the structural strength of the whole pressurizing piece 10, to reduce vibration, make the whole fan blade assembly 1 more stable and smoothly run.

[0048] It can be understood that the axial length W1 of the vane 12 is the length of the whole vane 12 corresponding to the axial direction of the pressurizing member 10. The axial length W2 of the pressurizing seat 11 is the length of the whole pressurizing seat 11 corresponding to the axial direction of the pressurizing member 10. The radial radius of at least part of the pressurizing seat 11 of the pressurizing member 10 is gradually increased along the axial direction of the pressurizing member 10, so that the wind sent by the fan realizes a gradual pressurization and speed-up process on the pressurizing seat 11, which is beneficial to the carding of the air flow and makes the air flow pass through the pressurizing seat 11 more smoothly for continuous pressurization and speed-up, so as to enhance the stability of the air flow and make the oncoming wind feel more uniform. By setting the axial length W1 of the vane 12 on the pressurizing seat 11 to be greater than the axial length W2 of the pressurizing seat 11, at least one end of the vane 12 can extend out of the pressurizing seat 11 in the radial direction relative to the pressurizing seat 11. When the vane 12 extends out of the pressurizing seat 11 in the direction away from the connecting cover 13, the vane 12 can penetrate into the inside of the portable fan more deeply relative to the pressurizing seat 11, so that even if the closest distance between the pressurizing seat 11 and the fan assembly 40 has reached the extreme value, the vane 12 can still extend out of the pressurizing seat 11, thereby reducing the gap between the vane 12 and the fan blades 42 of the fan assembly 40 in the portable fan 3, and further reducing the air guiding and sending distance between the whole pressurizing member 10 and the fan assembly 40 in the portable fan 3, so as to better transition and deliver the air flow sent by the fan blades 42 to the pressurizing member 10, thereby reducing the loss of the air flow sent by the fan when being delivered between the fan and the pressurizer. When the vane 12 extends out of the pressurizing seat 11 in the direction close to the connecting cover 13, the air guiding distance of the pressurizing member in the air outlet area can be improved, which is more beneficial to air guiding.

[0049] Please refer to Figure 1 . Specifically, the vane 12 includes a vane top end 122, a vane root end 121, a vane head end 125 and a vane tail end 124. The vane root end 121 is connected to one end of the pressurizing seat 11; the vane top end 122 is away from the vane root end 121; the vane tail end 124 and the vane head end 125 are sequentially arranged along the axial direction of the pressurizing member 10, and the air flow direction f (as shown in Figure 2 , the air flow direction f can be defined as the direction of the air flow in the axial direction of the pressurizing member 10, that is, the direction of the air flow flowing into and out of the pressurizing member 10 along the axial direction of the pressurizing member 10, and the vane tail end 124 and the vane head end 125 are sequentially arranged along the air flow direction f, so that the air flow sent by the fan assembly 40 sequentially passes through the vane tail end 124 and the vane head end 125.

[0050] Please refer to Figure 1 and Figure 2Further, the axial length W1 of the vane 12 gradually increases from the vane root end 121 to the vane top end 122, and at least part of the increased axial length of the vane 12 is greater than the axial length W2 of the pressurizing seat 11, so that the vane 12 at least one end extends radially out of the pressurizing seat 11.

[0051] It can be understood that the axial length W1 of the vane 12 gradually increases from the vane root end 121 to the vane top end 122, so that the length and area of the vane 12 extending out of the pressurizing seat 11 gradually increase from the vane root end 121 to the vane top end 122, thereby gradually increasing the air guide area extending out of the pressurizing seat 11, facilitating efficient air guide. In addition, the increasing direction is consistent with the direction in which the air volume of the fan blade 42 on the fan assembly 40 gradually increases from the vane root end 121 to the vane top end 122, so that the air supply and air guide between the two can correspond, making the transition more stable.

[0052] Please refer to Figure 1 and Figure 2 Further, the axial length of the vane root end 121 of the vane 12 is equal to the axial length of the pressurizing seat 11, and the axial length of the vane top end 122 of the vane 12 is greater than the axial length of the pressurizing seat 11.

[0053] It can be understood that the axial length of the vane root end 121 of the vane 12 is equal to the axial length of the pressurizing seat 11, so that the vane root end 121 of the vane 12 is arranged to fit the surface of the pressurizing seat 11 without protruding beyond the boundaries of the pressurizing seat 11, avoiding the blade root of the blade protruding and increasing the width of the gap between the pressurizing seat 11 and the fan, and also making the entire pressurizing member 10 more beautiful; and by setting the axial length of the vane top end 122 of the vane 12 to be greater than the axial length of the pressurizing seat 11, it is ensured that at least part of the vane 12 extends radially out of the pressurizing seat 11. In the present embodiment, the axial length of the vane root end 121 of the vane 12 is preferably equal to the axial length of the pressurizing seat 11, and the axial length of the vane 12 gradually increases from the vane root end 121 to the vane top end 122, so that the axial length of the vane 12 except the vane root end 121 connected to the surface of the pressurizing seat 11 is greater than the axial length of the pressurizing seat 11, thereby gradually reducing the air guide distance between the vane tail end 124 of the vane 12 and the fan blade 42 on the fan assembly 40 from the vane root end 121 to the vane top end 122, and the blade tip angle 123 reaches the minimum distance. Thus, the pressurizing member 10 in the present embodiment can reduce the air guide distance between the vane 12 on the pressurizing seat 11 and the blade on the fan as much as possible without affecting the gap between the pressurizing member 10 and the fan assembly 40, and increase the air guide area between the fan blade 42 and the vane 12, thereby achieving efficient air guide between the fan assembly 40 and the pressurizing.

[0054] Please refer toFigure 2 Further, the vane 12 comprises a connecting portion 126 and an extending portion 127, the extending portion 127 corresponds to the portion of the pressurizing seat 11 with gradually increasing radial radius; the vane top end 122 of the connecting portion 126 is connected to the connecting cover 13, and the vane root end 121 of the connecting portion 126 is connected to the pressurizing seat 11; the vane top end 122 of the extending portion 127 is not connected to the connecting cover 13, and the vane root end 121 of the extending portion 127 is connected to the pressurizing seat 11, and the extending portion 127 extends axially in the direction of gradually decreasing radial radius of the pressurizing seat 11 to extend out of the pressurizing seat 11.

[0055] It can be understood that the vane 12 comprises the connecting portion 126 with two ends connected to the pressurizing seat 11 and the connecting cover 13 respectively, and the extending portion 127 with one end connected to the connecting portion 126 and the other end extending out of the pressurizing seat 11. The extending portion 127 extends axially in the direction of gradually decreasing radial radius of the pressurizing seat 11 to extend out of the pressurizing seat 11, so that the part of the air flow sent by the fan blade 42 on the fan assembly 40 first passes through the vane tail end 124 of the vane 12 and then is guided out of the pressurizing seat 11 to the outside. Thus, the air guiding between the fan blade 42 and the vane 12 is realized. The connecting portion 126 and the extending portion 127 are arranged to realize the connection with the connecting cover 13 and the air guiding between the vanes 12 on the fan assembly 40 respectively, avoiding the mutual influence between the air guiding of the rear end 112 of the pressurizing member 10 and the connection between the front end 111.

[0056] It should be noted that the connecting portion 126 and the extending portion 127 of the vane 12 are in an integral structure, and the entire pressurizing member 10 can be integrally formed, thereby improving the overall strength of the pressurizing member 10. The connecting portion 126 and the extending portion 127 of the vane 12 integrally formed can realize the connection function and the air guiding function respectively, and the integral structure formed by the connecting portion 126 and the extending portion 127 is more conducive to the natural transition of the air flow guided by the extending portion 127 to the connecting portion 126, thereby entering the outside, further reducing the noise.

[0057] Please refer to Figure 3 Further, the connecting portion 126 is linear, and the extending portion 127 is arc-shaped; the radial height h (as shown in h) of the extending portion 127 gradually increases in the direction of gradually decreasing radial radius of the pressurizing seat 11. Figure 3

[0058] ​It can be understood that the connecting portion 126 is arranged in a radial linear shape, so that the connecting portion 126 has better strength and rigidity, can effectively resist the load of the connecting cover 13 in the axial direction, and improves the firmness and stability of the connection. The extension portion 127 is arranged in an arc shape, which can more effectively guide the air flow sent by the fan assembly 40 on the static blade 12, increase the smoothness and stability of the air flow sent, and simultaneously each static blade 12 is naturally transitioned from the arc shape to the linear shape, so that the mixed direction air flow state can be formed into straight flow air parallel to the axial direction of the pressurizing seat 11 after being combed by the extension portion 127 and the connecting portion 126, so as to increase the blowing distance, reduce turbulence, noise and vibration, reduce the noise emitted by turbulence interference, realize noise reduction, and convert sharp noise into low-pitched sound.

[0059] It should be noted that the radial height of the extension portion 127 gradually increases in the direction in which the radial radius of the pressurizing seat 11 gradually decreases, and the positions of the static blade top ends 122 of the extension portion 127 are ensured to be flush, thereby ensuring the stability of the static blade top ends 122 of the extension portion 127 at each position when connected with the remaining components.

[0060] Please refer to Figure 4 , further, the installation angle a (as shown in Figure 4 a) of the extension portion 127 of the static blade 12 is 20°-25°.

[0061] It can be understood that the installation angle a of the extension portion 127 is 20°-25°, which can realize the natural transition between the arc-shaped extension portion 127 and the linear connecting portion 126 on the static blade 12, avoid the influence of the corner on the air flow, realize the effective air guiding of the air flow sent by the fan assembly 40, and realize the natural transition of the air flow guided by the arc-shaped extension portion 127 to the linear connecting portion 126, so that the air guiding and combing of the static blade 12 are more natural and smooth.

[0062] Please refer to Figure 3 , further, the pressurizing seat 11 includes a front end 111 and a rear end 112, the boundary radial diameter D1 (as shown in Figure 4 D1) of the outer surface of the front end 111 of the pressurizing seat 11 is 36mm-40mm, and the boundary radial diameter D2 (as shown in Figure 4 D2) of the outer surface of the rear end 112 of the pressurizing seat 11 is 31mm-35mm, so as to limit the upper and lower limits of the pressurizing of the pressurizing member 10, so that the air flow passing through the pressurizing seat 11 can be smoothly pressurized in a smaller range, so that the final sent air flow speed and air pressure can be more stable.

[0063] Specifically, the pressurizing seat 11 comprises a front end 111 and a rear end 112, the radial radius of the rear end 112 gradually increases in the direction close to the front end 111, and the radial radius of the front end 111 is greater than that of the rear end 112; the front end 111 and the rear end 112 correspond to the static blade root end 121 of the connecting part 126 and the static blade root end 121 of the extension part 127 respectively.

[0064] It can be understood that the surface of the front end 111 can be parallel to the axis of the pressurizing part 10, the radial radius of the rear end 112 gradually increases to the radial radius of the front end, when the air flow is between the extension parts 127, the gradual pressurization of the air flow introduced by the extension part 127 of the static blade 12 can be realized, so that the pressurization process of the air flow by the pressurizing part 10 is more balanced; when the air flow of the static blade 12 enters between the connecting parts 126, the air flow passes through the front end 111, the air flow can form straight flow parallel to the axial direction of the pressurizing part 10, thereby the pressurizing part 10 not only realizes the continuous pressurization of the air flow sent by the fan assembly 40, but also guides the direction of the pressurized air flow.

[0065] It should be noted that the part corresponding to the front end 111 of the pressurizing seat 11 of the connecting cover 13 and the static blade 12 extends away from the rear end 112 of the pressurizing seat 11 to extend out of the pressurizing seat 11 and enter the outside to form an air expansion port 131, the inside of the air expansion port 131 is smooth and arc-shaped. The extension direction of the connecting cover 13 is opposite to the extension direction of the extension part 127 of the static blade 12, the radial radius of the air expansion port 131 gradually increases along the extension direction of the connecting cover 13 and is smooth and arc-shaped, which is more conducive to the smooth air outlet of the air expansion port 131 and the expansion of the air outlet range.

[0066] Please refer to Figure 4 , further, the distance L (as shown L) between the outer surface of the front end 111 of the pressurizing seat 11 and the inner surface of the connecting cover 13 is 5.8mm-7.8mm. Figure 4

[0067] It can be understood that by limiting the distance between the outer surface of the front end 111 of the pressurizing seat 11 and the inner surface of the connecting cover 13 to be 5.8mm-7.8mm, the size of the air expansion port 131 for the final air outlet is limited, so that the air expansion port 131 in this range can effectively concentrate the airflow and improve the wind speed, so that the user can feel stronger wind.

[0068] Further, the axial length of the pressurizing seat 11 is 20.7mm-22.7mm, and the axial length of the static blade 12 is 23.2mm-25.2mm.

[0069] ​It can be understood that, by limiting the maximum axial length range of the pressurizing seat 11 and the stationary blade 12, the extension length of the stationary blade 12 extending out of the pressurizing seat 11 is limited, so as to ensure the air guide distance between the stationary blade 12 and the fan blade 42 in the range, and the stationary blade 12 on the pressurizing member 10 can achieve better air guide effect.

[0070] Please refer to Figure 5 and Figure 6 The second embodiment of the utility model further provides a portable fan 3, which comprises the pressurizing member 10 in any one of the first embodiment, and further comprises a fan assembly 40, the fan assembly 40 and the pressurizing member 10 are sequentially arranged along the axial direction, and the fan assembly 40 comprises a rotating seat 41 and a plurality of fan blades 42, and the radial radius of at least part of the rotating seat 41 gradually increases along the axial direction of the rotating seat 41.

[0071] It can be understood that the pressurizing member 10 in the first embodiment can be used in the portable fan 3, and sequentially arranged along the axial direction with the fan assembly 40 in the portable fan 3, so that the air flow entering the portable fan 3 sequentially passes through the fan assembly 40 and the pressurizing member 10, so that the air flow entering the portable fan 3 first passes through the fan assembly 40 to output strong air flow to the pressurizing member 10, so that the pressurizing member 10 guides the air flow into the pressurizing member 10 through the extension part 127 of the stationary blade 12, and then sends the air flow out of the portable fan 3 after the air flow is further pressurized and accelerated by the pressurizing member 10. The fan assembly 40 can be an axial fan or an inclined fan or a centrifugal fan, and the present embodiment does not limit this. The portable fan 3 comprises the pressurizing member 10 in any one of the first embodiment, and has the same technical effects as the pressurizing member 10 in the first embodiment, and the present embodiment does not limit this.

[0072] It should be noted that in the present embodiment, the portable fan 3 can be a handheld portable fan, or a small fan only having the above-mentioned pressurizing member 10, or a desktop fan, a clip fan, a variable fan, etc., and the present embodiment does not limit this.

[0073] Optionally, the portable fan 3 can comprise a fan blade assembly 1 and a power supply part 2 connected with the fan blade assembly 1. The pressurizing member 10 and the fan assembly 40 are arranged in the fan blade assembly 1. The power supply part 2 is arranged outside the fan blade assembly 1 and electrically connected with the motor 70 to supply power for the motor 70, drive the fan assembly 40 to rotate, and blow out the air flow. The power supply part 2 can be a handheld assembly for a user to hold and use, or stand on a plane, and the fan blade assembly 1 is used to blow air to the user.

[0074] Specifically, the rotating seat 41 is provided with a mounting groove 43 on the side close to the pressurizing member 10, the pressurizing member 10 is provided with a mounting cavity 113 on the side close to the rotating seat 41, the mounting groove 43 and the mounting cavity 113 are opposite and form a mounting space, and the motor 70 is accommodated in the mounting space. Specifically, the power supply part 2 supplies power to the motor 70, the motor 70 is driven to rotate the fan assembly 40 as a whole, so as to drive the fan blade 42 to rotate.

[0075] Optionally, the fan blade assembly 1 further comprises a display assembly 90, and the display assembly 90 is arranged on the side, away from the fan assembly 40, of the pressurizing seat 11. The display assembly 90 can be used to display at least one of the power, the current gear and the charging state.

[0076] Compared with the prior art, the pressurizing member and the portable fan have the following advantages.

[0077] 1. The pressurizing member provided by the embodiment gradually increases the radial radius of at least part of the pressurizing seat in the axial direction of the pressurizing member, so that the wind sent out by the fan realizes a gradual pressurization process on the pressurizing seat, which is beneficial to the combing of the wind flow and makes the wind flow pass through the pressurizing seat more stably, so as to enhance the stability of the airflow and make the oncoming wind feel more uniform. In addition, the axial length of the stationary vane on the pressurizing seat is greater than the axial length of the pressurizing seat, so that the stationary vane can extend out of the pressurizing seat relative to the pressurizing seat and extend more deeply into the interior of the portable fan relative to the pressurizing seat. Even if the closest distance between the pressurizing seat and the fan assembly has reached an extreme value, the stationary vane can still extend out of the pressurizing seat, so as to reduce the gap between the stationary vane and the fan blade in the fan in the portable fan, and further reduce the air guiding and sending distance between the pressurizing member as a whole and the fan assembly in the portable fan, so as to better and efficiently transfer the wind flow sent out by the fan blade to the pressurizing member, thereby reducing the loss of the wind amount sent out by the fan when being transferred between the fan and the pressurizer.

[0078] 2. The axial length of the stationary vane gradually increases from the root end of the stationary vane to the top end of the stationary vane, so that the length and area of the stationary vane extending out of the pressurizing seat gradually increase from the root end of the stationary vane to the top end of the stationary vane, thereby gradually increasing the air guiding area extending out of the pressurizing seat and facilitating efficient air guiding. In addition, the increasing direction is consistent with the direction in which the wind amount sent by the fan blade gradually increases from the root end of the stationary vane to the top end of the stationary vane, so that the air sending and guiding between the two can be more smoothly transferred.

[0079] 3. By setting the axial length of the root end of the stationary blade to be equal to the axial length of the pressure base, the root end of the stationary blade is set to fit against the surface of the pressure base without protruding beyond the boundaries of both ends of the pressure base. This avoids the blade root protruding and increasing the width of the gap between the pressure base and the fan, and also makes the overall pressure component more aesthetically pleasing. Furthermore, by setting the axial length of the tip of the stationary blade to be greater than the axial length of the pressure base, the axial length of the stationary blade, except for the root end connected to the surface of the pressure base, is greater than the axial length of the pressure base. Thus, the pressure component in this embodiment can reduce the air guiding distance between the stationary blade on the pressure base and the blades on the fan without affecting the gap between the pressure component and the fan assembly.

[0080] 4. By setting up a connecting part and an extension part, both can respectively achieve the connection function with the connecting cover and the air guiding function with the upper blades of the fan, thus avoiding the mutual interference between the air guiding at the rear end of the pressurizing component and the connection at the front end.

[0081] 5. By setting the connecting part to be straight, the connecting part has better strength and rigidity, which can effectively resist the axial load of the connecting cover and improve the firmness and stability of the connection between the two; and by setting the extension part to be arc-shaped, the airflow delivered by the fan blades can be guided more effectively, increasing the smoothness and stability of the airflow.

[0082] 6. By setting the installation angle of the extension of the stator blade to 20°-25°, the airflow delivered by the fan blade can be effectively guided, and the airflow can be naturally transitioned from the arc-shaped extension to the straight connection, making the airflow of the stator blade more natural and smooth.

[0083] 7. By setting the radial diameter of the outer surface of the front end of the pressurizing seat to 36mm-40mm and the radial diameter of the outer surface of the rear end of the pressurizing seat to 31mm-35mm, the upper and lower limits of the pressurizing of the pressurizing component 10 are limited, so that the airflow through the pressurizing seat 11 can achieve stable pressurization within a small range, thereby making the final delivered airflow velocity and air pressure more stable.

[0084] 8. By limiting the distance between the outer surface of the front end of the pressure seat and the inner surface of the connecting cover to 5.8mm-6.8mm, the size of the final air outlet is limited, so that the air outlet within this range can effectively concentrate the airflow, increase the wind speed, and make the user feel a stronger wind.

[0085] 9. This utility model also provides a portable fan, which has the same beneficial effects as the above-mentioned pressurizing component, and will not be described in detail here.

[0086] The above has carried out the detailed introduction to the portable fan of the utility model embodiment disclosed in the utility model, the principle and implementation mode of the utility model have been described in this paper by applying specific examples, the above embodiment is only used for helping understanding the method and core idea of the utility model;Meanwhile, for the general technical personnel in the art, according to the idea of the utility model, there will be changes in specific implementation mode and application range, and the above is not understood as the limitation of the utility model, any modification, equivalent replacement and improvement etc. made within the principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A pressurizing member characterized by: The application relates to a pressurizing component, comprising: a pressurizing seat, at least part of the radial radius of the pressurizing seat gradually increases along the axial direction of the pressurizing component; a plurality of stationary vanes arranged on the pressurizing seat; a connecting cover surrounding the pressurizing seat through the stationary vanes; wherein the axial length of the stationary vanes is greater than the axial length of the pressurizing seat.

2. The pressurizing member according to claim 1, wherein: The axial length of the stationary vanes gradually increases from the root end to the top end of the stationary vanes.

3. The pressurizing member according to claim 2, wherein: The axial length of the root end of the stationary vanes is equal to the axial length of the pressurizing seat, and the axial length of the top end of the stationary vanes is greater than the axial length of the pressurizing seat.

4. The pressurizing member according to claim 3, wherein: The stationary vanes comprise a connecting part and an extending part, and the extending part corresponds to the part of the pressurizing seat with gradually increasing radial radius; the top end of the connecting part is connected to the connecting cover, the root end of the connecting part is connected to the pressurizing seat, the top end of the extending part is not connected to the connecting cover, the root end of the extending part is connected to the pressurizing seat, and the extending part axially extends along the direction in which the radial radius of the pressurizing seat gradually decreases to extend out of the pressurizing seat.

5. The pressurizing member according to claim 4, wherein: The connecting part is linear, and the extending part is arc-shaped; the radial height of the extending part gradually increases along the direction in which the radial radius of the pressurizing seat gradually decreases.

6. The pressurizing member according to claim 5, wherein: The installation angle of the extending part of the stationary vanes is 20-25 degrees.

7. The pressurizing member according to claim 5, wherein: The pressurizing seat comprises a front end and a rear end, the boundary radial diameter of the outer surface of the front end of the pressurizing seat is 36-40 mm, and the boundary radial diameter of the outer surface of the rear end of the pressurizing seat is 31-35 mm.

8. The pressurizing member according to claim 7, wherein: The spacing between the outer surface of the front end of the pressurizing seat and the inner surface of the connecting cover is 5.8-7.8 mm.

9. The pressurizing member according to claim 1, wherein: The axial length of the pressurizing seat is 20.7-22.7 mm, and the axial length of the stationary vanes is 23.2-25.2 mm.

10. A portable fan characterized by: The application further relates to a fan assembly, which is sequentially arranged along the axial direction of the pressurizing component, and comprises a rotating seat and a plurality of fan blades, and at least part of the radial radius of the rotating seat gradually increases along the axial direction of the rotating seat.

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