Tower fan

Abstract

A tower fan, comprising an air duct (1000), a cross-flow fan wheel (2000), and a flow divider (3000), wherein the cross-flow fan wheel (2000) is arranged in the air duct (1000); and the flow divider (3000) is arranged at an air output section (1100) of the air duct (1000) to divide the air output section (1100) of the air duct (1000) into a left flow channel (1110) and a right flow channel (1120), a left air outlet (1111) is formed at the end of the left flow channel (1110), and a right air outlet (1121) is formed at the end of the right flow channel (1120).

Description

tower fan

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202311871433.X and application name “Tower Fan”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of air supply devices, and in particular to a tower fan. Background Art

[0004] The tower fan includes an air duct and a cross-flow impeller arranged in the air duct. The cross-flow impeller rotates in the air duct, driving the air flow to flow and be discharged. It is precisely because the tower fan uses a cross-flow impeller, the characteristics of the cross-flow impeller make the tower fan's air outlet effect poor, and the comfort of use needs to be improved.

[0005] Application Contents

[0006] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a tower fan.

[0007] To achieve the above objectives, the present application discloses a tower fan, which comprises:

[0008] air duct;

[0009] a cross-flow fan wheel, the cross-flow fan wheel being arranged in the air duct; and

[0010] A diverter is provided in the air outlet section of the air duct to separate a left flow channel and a right flow channel in the air outlet section of the air duct, a left air outlet is formed at the end of the left flow channel, and a right air outlet is formed at the end of the right flow channel.

[0011] In some embodiments of the present application, the diverter has a diversion starting point, and the distance between the diversion starting point and the center of the crossflow wind wheel in the front-to-back direction is H, satisfying H=1.3r~1.8r, where r is the radius of the crossflow wind wheel.

[0012] In some embodiments of the present application, the diverter has a diversion starting point. Along the left and right directions, the distance between the diversion starting point and the left side wall of the air outlet section is a1, and the distance between the diversion starting point and the right side wall of the air outlet section is a2. The width of the left air outlet is b1, and the width of the right air outlet is b2, satisfying (a1 / a2)=(0.9~1.1)*(b1 / b2).

[0013] In some embodiments of the present application, the flow splitter has a splitting starting point, at least a portion of the left flow channel is inclined from the splitting starting point toward the left front, and at least a portion of the right flow channel is inclined from the splitting starting point toward the right front;

[0014] The tower fan includes a left guide vane and a right guide vane, wherein the left guide vane is provided at the left air outlet and extends in the front-to-back direction, and the right guide vane is provided at the right air outlet and extends in the front-to-back direction;

[0015] The tangent line on the left side of the inlet end of the left guide vane points to the right rear, and the tangent line on the right side of the inlet end of the right guide vane points to the left rear.

[0016] In some embodiments of the present application, the inlet end of the left guide vane is formed with a first inlet angle, and the inlet end of the right guide vane is formed with a second inlet angle, and the ranges of the first inlet angle and the second inlet angle are 20° to 50° respectively.

[0017] In some embodiments of the present application, a tangent line on the left side of the outlet end of the left guide vane points to the right front, and a tangent line on the right side of the outlet end of the right guide vane points to the left front.

[0018] In some embodiments of the present application, the outlet end of the left guide vane forms a first outlet angle, and the outlet end of the right guide vane forms a second outlet angle, and the ranges of the first outlet angle and the second outlet angle are respectively 0° to 20°.

[0019] In some embodiments of the present application, the diverter has a diversion starting point, and a first straight line is drawn along the front-to-back direction through the diversion starting point, and the first straight line intersects with the cross-flow impeller.

[0020] In some embodiments of the present application, the distance between the first straight line and the center of the crossflow impeller in the left-right direction is not greater than 0.2 times the diameter of the crossflow impeller.

[0021] In some embodiments of the present application, the air duct is provided with an air inlet, and the splitter, the cross-flow impeller and the air inlet are arranged in sequence from front to back.

[0022] In some embodiments of the present application, the diverter includes a first functional module, adapted to change the environment through the first functional module.

[0023] In some embodiments of the present application, the tower fan includes an atomizer, the first functional module has a mist channel and a mist outlet connected to the mist channel, the mist channel is connected to the atomizer, and the mist outlet is arranged on the front side of the diverter.

[0024] In some embodiments of the present application, the mist outlet extends in the up and down directions and is in the shape of a long strip.

[0025] In some embodiments of the present application, the mist channel extends in the up and down directions, the mist outlet extends along the mist channel to be connected with the mist channel, a mist inlet is provided at the bottom end of the mist channel, and the width of the mist outlet is arranged to increase from bottom to top.

[0026] In some embodiments of the present application, the mist channel extends in an up-down direction, a mist inlet is provided at the bottom end of the mist channel, and the mist outlet extends along the mist channel;

[0027] The diverter has a mist guide blade, and a plurality of the mist guide blades are arranged at the mist outlet and alternately arranged in the vertical direction. At least part of the projection of the mist guide blade from top to bottom is located at the mist inlet.

[0028] In some embodiments of the present application, the lower side of the mist guide blade is inclined to guide the mist obliquely upward.

[0029] In some embodiments of the present application, the leading edge of the mist guide blade is located behind the leading edge of the mist outlet and is at a preset distance from the leading edge of the mist outlet.

[0030] In some embodiments of the present application, the diverter includes a first component and a second component located behind the first component, the first component and the second component are connected to form the mist channel, the mist outlet is provided in the first component, and the second component is suitable for diverting the airflow.

[0031] The technical solution of the present application forms an encircling wind by setting a diverter in the air outlet section of the air duct, which is beneficial to improving the flow uniformity of the airflow finally discharged from the tower fan, avoiding the skewed air outlet phenomenon caused by the cross-flow wind wheel, and thus improving the air outlet comfort of the tower fan.

[0032] Other advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0034] FIG1 is a perspective view of a tower fan in some embodiments;

[0035] FIG2 is a front view of a tower fan in some embodiments;

[0036] FIG3 is an enlarged view of the portion marked A in FIG2 ;

[0037] FIG4 is an exploded view of a tower fan in some embodiments;

[0038] FIG5 is a schematic diagram of a flow divider in some embodiments;

[0039] FIG6 is an enlarged view of the portion marked B in FIG5 ;

[0040] FIG7 is an enlarged view of the portion marked C in FIG5 ;

[0041] FIG8 is a cross-sectional view of a flow diverter in some embodiments;

[0042] FIG9 is a cross-sectional view of a diverter in some embodiments (taken along the horizontal direction);

[0043] FIG10 is an enlarged view of the portion marked D in FIG9 ;

[0044] FIG11 is an enlarged view of the portion marked E in FIG9 ;

[0045] FIG12 is a schematic diagram of a left guide vane in some embodiments;

[0046] FIG13 is a schematic diagram of a right guide vane in some embodiments;

[0047] FIG14 is a cross-sectional view of a flow divider in some embodiments (taken along the horizontal direction, showing H and r);

[0048] FIG15 is a cross-sectional view of a flow divider in some embodiments (taken along the horizontal direction, showing a1, a2, b1 and b2);

[0049] FIG16 is a cross-sectional view of a flow divider in some embodiments (taken along the horizontal direction, showing L1 and D);

[0050] FIG17 is a diagram showing a simulation of tower fan airflow in some embodiments.

[0051] Description of the accompanying drawings: Air duct 1000, air outlet section 1100, left side wall 1101, right side wall 1102, left flow channel 1110, left air outlet 1111, right flow channel 1120, right air outlet 1121, air inlet 1200, cross-flow impeller 2000, splitter 3000, first component 3100, mist outlet 3110, leading edge 3111 of mist outlet 3110, mist guide blade 3120, lower side 3121, leading edge 3122 of mist guide blade 3120, second component 3200, diversion starting point 3210, first straight line 3211, mist channel 3300, mist inlet 3310, housing 4000, inlet 4001 , left guide vane 4100, inlet end 4110 of the left guide vane 4100, tangent 4111 on the left side of the inlet end 4110, outlet end 4120 of the left guide vane 4100, tangent 4121 on the left side of the outlet end 4120, right guide vane 4200, inlet end 4210 of the right guide vane 4200, tangent 4211 on the right side of the inlet end 4210, outlet end 4220 of the right guide vane 4200, tangent 4221 on the right side of the outlet end 4220, atomizer 5100.

[0052] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0054] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0055] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0057] The present application proposes a tower fan. As shown in Figures 1, 2, 4, 9 and 10, in some embodiments of the present application, the tower fan includes an air duct 1000, a cross-flow impeller 2000 and a diverter 3000. The cross-flow impeller 2000 is arranged in the air duct 1000. When the cross-flow airflow rotates in the air duct 1000, it can drive the air flow. The diverter 3000 is arranged at the air outlet section 1100 of the air duct 1000, thereby separating the air outlet section 1100 of the air duct 1000 into a right flow channel 1120 and a left flow channel 1110. A right air outlet 1121 is formed at the end of the right flow channel 1120, and a left air outlet 1111 is formed at the end of the left flow channel 1110.

[0058] By setting a diverter 3000 in the air outlet section 1100 of the air duct 1000, an encircling wind is formed, which is beneficial to improving the flow uniformity of the airflow finally discharged from the tower fan, avoiding the air outlet skew phenomenon caused by the cross-flow impeller 2000, and thus improving the air outlet comfort of the tower fan.

[0059] Specifically, the up, down, left, right, front and back directions in this article are based on the tower fan placed on the ground. The side of the tower fan facing the user is the front, and the side away from the user is the back. The side corresponding to the user's left hand is the left, and the side corresponding to the user's right hand is the right (the left air outlet 1111 and the right air outlet 1121 are arranged along the left and right directions). The side close to the ground is the bottom, and the side away from the ground is the top.

[0060] The tower fan includes an air duct 1000, a cross-flow fan wheel 2000 and a motor. The cross-flow fan wheel 2000 is arranged in the air duct 1000 and is rotatable relative to the air duct 1000. The cross-flow fan wheel 2000 is assembled with the air duct 1000 and is arranged above the motor. The motor and the cross-flow fan wheel 2000 are driven and connected. The motor can drive the cross-flow fan wheel 2000 to rotate in the air duct 1000. The air duct 1000 has an air inlet 1200 and an air outlet (the air outlet is composed of the right air outlet 1121 and the left air outlet 1111). The airflow driven by the cross-flow fan wheel 2000 enters the air duct 1000 from the air inlet 1200 and is then discharged through the air outlet.

[0061] In the related art, the cross-flow blower 2000 is extended in the up and down directions. When the cross-flow blower 2000 rotates, due to the characteristics of the cross-flow blower 2000, the discharged wind will be offset to one side (left or right), which will cause the wind volume on one side to be large and the wind volume on the other side to be small, reducing the uniformity and comfort of the air output.

[0062] To this end, in this embodiment, a diverter 3000 is provided, and the diverter 3000 is provided in the air outlet section 1100 of the air duct 1000. The so-called air outlet section 1100 is the portion of the air duct 1000 corresponding to the downstream of the cross-flow impeller 2000. It can be understood that the air outlet section 1100 of the air duct 1000 has a certain extension length, and the diverter 3000 only needs to be provided in the air outlet section 1100. This embodiment does not limit whether the diverter 3000 occupies the air outlet section 1100 completely along the extension direction (airflow direction) of the air outlet section 1100. In this way, the diverter 3000 can separate the air outlet section 1100, so that the air outlet section 1100 is separated into a right flow channel 1120 and a left flow channel 1110, that is, when the user faces the front of the tower fan, the right flow channel 1120 corresponds to the user's right hand, and the left flow channel 1110 corresponds to the user's left hand. The end of the right flow channel 1120 forms a right air outlet 1121, and the end of the left flow channel 1110 forms a left air outlet 1111. The left air outlet 1111 and the right air outlet 1121 are facing left and right to each other.

[0063] When the airflow discharged from the crossflow impeller 2000 reaches the diverter 3000, it is split into two airflows by the diverter 3000: one airflow flows along the right flow channel 1120 and is discharged through the right air outlet 1121, while the other airflow flows along the left flow channel 1110 and is discharged through the left air outlet 1111. Referring to the orientation shown in FIG9 , without the diverter 3000, the airflow discharged from the crossflow impeller 2000 would be deflected toward the left front. However, with the diverter 3000, the airflow that was deflected toward the left front is blocked by the diverter 3000 and then changes direction, entering the right flow channel 1120. For example, in the airflow simulation shown in Figure 17, the airflow discharged from the crossflow impeller 2000 near the right side wall 1102 of the air outlet section 1100 has an inertia toward the left. When it flows to the diverter 3000, the diverter 3000 blocks and redirects this part of the airflow, eliminating the left-deviation inertia of this part of the airflow, and then makes this part of the airflow be discharged from the right side air outlet 1121. This can avoid the skewed air outlet phenomenon of the tower fan to a certain extent and improve the uniformity of the air outlet.

[0064] It can be understood that, through the arrangement of the diverter 3000, the diverter 3000 forms an obstruction to a certain extent. In order to minimize the loss of airflow energy caused by the diverter 3000, in this embodiment, the diverter 3000 is provided with a diversion starting point 3210, and the airflow starts to divert from the diversion starting point 3210. The so-called diversion starting point 3210 is the position where the diverter 3000 is closest to the crossflow impeller 2000 along the extension direction of the air duct 1000, and the diverter 3000 is located from the diversion starting point 3210 to the crossflow impeller 2000. A small part is arranged to gradually expand toward the front. For example, the end of the diverter 3000 facing the airflow forms a pointed structure. In this way, the airflow generated by the cross-flow impeller 2000 will first contact the diversion starting point 3210, and be divided into two airflows entering the right flow channel 1120 and the left flow channel 1110 from the diversion starting point 3210, thereby minimizing the resistance of the diverter 3000 to the airflow. In particular, the diverter 3000 gradually expands from the diversion starting point 3210, which is more conducive to reducing resistance and forming a better diversion effect.

[0065] As shown in Figure 14, in some embodiments of the present application, the diverter 3000 is provided with a diversion starting point 3210, and the airflow starts to divert from the diversion starting point 3210. Along the front-to-back direction, the distance between the center of the cross-flow wind wheel 2000 and the diversion starting point 3210 is defined as H, and the radius of the cross-flow wind wheel 2000 is r, which needs to meet the condition H=1.3r~1.8r. Through such a setting, the diversion effect of the diverter 3000 on the airflow is further improved.

[0066] Specifically, the airflow generated by the crossflow impeller 2000 first contacts the flow splitting starting point 3210 and is split into two airflows from the flow splitting starting point 3210 , one entering the right flow channel 1120 and the other entering the left flow channel 1110 . It is understandable that since the diverter 3000 is disposed in the outlet section 1100 of the air duct 1000, it will, to a certain extent, hinder the flow of air. The formation of airflow is caused by the work performed by the crossflow impeller 2000 on the air. If H is designed to be too small, that is, the diverter 3000 is too close to the crossflow impeller 2000, then the crossflow impeller 2000 will begin to divert air before it has fully performed its work, which will significantly reduce the air volume. If H is designed to be too large, as mentioned above, the characteristics of the crossflow impeller 2000 will cause the airflow to deviate to one side. If H is designed to be too large, then the diverter 3000 will be far away from the crossflow impeller 2000, and the airflow will need to be corrected at a large angle to reach the diverter 3000, increasing resistance. In addition, due to the limited size of the tower fan, an H that is too large is not conducive to the structural layout and will increase the overall space occupied by the tower fan. To this end, in this embodiment, H is optimized so that the range of H meets 1.3r~1.8r. For example, the value of H is 1.3r, 1.4r, 1.5r, 1.6r, 1.7r or 1.8r. This can not only meet the diversion requirements, but also ensure the air volume and reduce airflow energy loss.

[0067] In combination with what is shown in FIG15 , in some embodiments of the present application, the distance between the diversion starting point 3210 and the left side wall 1101 of the air outlet section 1100 along the left-right direction is defined as a1, the distance between the diversion starting point 3210 and the right side wall 1102 of the air outlet section 1100 along the left-right direction is defined as a2, the width of the left air outlet 1111 (the so-called width is the dimension along the left-right direction) is defined as b1, and the width of the right air outlet 1121 is defined as b2. The condition (a1 / a2)=(0.9~1.1)*(b1 / b2) needs to be satisfied to reduce the flow difference between the right air outlet 1121 and the left air outlet 1111, thereby further improving the air outlet uniformity of the tower fan.

[0068] Specifically, as mentioned above, the characteristics of the crossflow impeller 2000 cause the airflow to deflect to one side. The diverter 3000 can suppress the airflow deviation to a certain extent, thereby facilitating uniform airflow. In this embodiment, by matching a1, a2, a3, and a4, the condition (a1 / a2) = (0.9-1.1) * (b1 / b2) is satisfied, for example, (a1 / a2) = 0.9 * (b1 / b2), (a1 / a2) = 1.0 * (b1 / b2), or (a1 / a2) = 1.1 * (b1 / b2). This optimizes and maximizes the matching of the airflow from the right air outlet 1121 with the airflow from the left air outlet 1111, further reducing the difference in air volume and wind speed between the right air outlet 1121 and the left air outlet 1111, and improving airflow comfort.

[0069] As shown in FIG10 , in some embodiments of the present application, the flow splitter 3000 is provided with a flow splitting starting point 3210. The so-called flow splitting starting point 3210 is described above and will not be repeated here. At least a portion of the right flow channel 1120 is inclined toward the right front from the flow splitting starting point 3210, while at least a portion of the left flow channel 1110 is inclined toward the left front from the flow splitting starting point 3210. For example, the upstream part of the right flow channel 1120 is inclined from the diversion starting point 3210 toward the right front, while the downstream part of the right flow channel 1120 extends in the front-to-back direction, and the right air outlet 1121 is set in the downstream part of the right flow channel 1120, and the upstream part of the left flow channel 1110 is inclined from the diversion starting point 3210 toward the left front, while the downstream part of the left flow channel 1110 extends in the front-to-back direction. Through the inclined setting of the upstream part of the right flow channel 1120 and the upstream part of the left flow channel 1110, it is easier to guide the airflow when the diverter 3000 realizes the diversion of the airflow, and through the front-to-back extension of the downstream part of the right flow channel 1120 and the downstream part of the left flow channel 1110, it is more convenient to realize the positive (front) air outlet of the tower fan.

[0070] It can be understood that the inclined setting of at least part of the right flow channel 1120, that is, when the airflow flows through at least part of the right flow channel 1120, it flows toward the right front. Similarly, the inclined setting of at least part of the left flow channel 1110, that is, when the airflow flows through at least part of the left flow channel 1110, it flows toward the left front.

[0071] To further improve the uniformity of airflow, as shown in FIG10 , the tower fan includes a right guide vane 4200 and a left guide vane 4100. The right guide vane 4200 is disposed at the right air outlet 1121 to guide the airflow discharged from the right air outlet 1121. The left guide vane is disposed at the left air outlet 1111 to guide the airflow discharged from the left air outlet 1111. The right guide vane 4200 and the left guide vane 4100 have a certain height in the vertical direction. The design of the right guide vane 4200 and the left guide vane 4100 ensures a more uniform airflow through the right air outlet 1121 and the left air outlet 1111. Furthermore, in this embodiment, the right guide vane 4200 and the left guide vane 4100 are designed to extend in the front-to-back direction, which is more conducive to achieving steam box (front) airflow for the tower fan. On this basis, the tangent 4211 on the right side of the inlet end 4210 of the right guide vane 4200 needs to be designed to point to the left rear, while the tangent 4111 on the left side of the inlet end 4110 of the left guide vane 4100 needs to be designed to point to the right rear, which is more conducive to guiding the diverted airflow through the right guide vane 4200 / left guide vane 4100, further reducing the flow resistance of the airflow, and achieving a better diversion effect.

[0072] This is because, as mentioned above, at least part of the right flow channel 1120 is inclined from the diversion starting point 3210 toward the right front, while at least part of the left flow channel 1110 is inclined from the diversion starting point 3210 toward the left front. To this end, the tangent 4211 on the right side of the inlet end 4210 of the right guide vane 4200 is directed to the left rear, so as to better receive the airflow of the right flow channel 1120, thereby guiding these airflows to be discharged toward the front. The tangent 4111 on the left side of the inlet end 4110 of the left guide vane 4100 is directed to the right rear, so as to better receive the airflow of the left flow channel 1110, thereby guiding these airflows to be discharged toward the front.

[0073] For example, as shown in conjunction with Figures 10, 12, and 13, the inlet end 4210 of the right guide vane 4200 is provided with a second inlet angle. The second inlet angle is located on the side of the right guide vane 4200 facing away from the left guide vane 4100 and is the angle between the tangent line 4211 of the inlet end 4210 and the front-to-back direction. The second inlet angle is defined as α2, and the value range of α2 is 20° to 50°, for example, α2 is 20°, 30°, 40°, or 50°. The inlet end 4110 of the left guide vane 4100 is provided with a first inlet angle. The first inlet angle is located on the side of the left guide vane 4100 facing away from the right guide vane 4200 and is the angle between the tangent line 4111 of the inlet end 4110 and the front-to-back direction. The first inlet angle is defined as α1, and the value range of α1 is 20° to 50°, for example, α1 is 20°, 30°, 40°, or 50°. The first inlet angle α1 and the second inlet angle α2 ensure the airflow reception and diversion effects.

[0074] In combination with Figures 10, 12 and 13, in some embodiments of the present application, the tangent 4221 on the right side of the outlet end 4220 of the right guide vane 4200 needs to be designed to point to the left front, and the tangent 4121 on the left side of the outlet end 4120 of the left guide vane 4100 needs to be designed to point to the right front, so as to better achieve the convergence of the wind discharged from the right air outlet 1121 and the wind discharged from the left air outlet 1111, thereby achieving stronger air supply.

[0075] It can be understood that since the right air outlet 1121 and the left air outlet 1111 are separated by the diverter 3000, the airflow discharged from the right air outlet 1121 and the left air outlet 1111 is divided into two streams, which diverges. Through the coordination of the outlet end 4220 of the right guide vane 4200 and the outlet end 4120 of the left guide vane 4100, the airflow discharged from the right air outlet 1121 and the left air outlet 1111 converge with each other, thereby achieving air supply over a longer distance.

[0076] For example, as shown in conjunction with Figures 10, 12, and 13, the outlet end 4220 of the right guide vane 4200 is provided with a second outlet angle. The second outlet angle is located on the side of the right guide vane 4200 facing away from the left guide vane 4100 and is the angle between the tangent line 4221 of the outlet end 4220 and the front-to-back direction. The second outlet angle is defined as β2, and the value range of β2 is 0° to 20°, for example, β2 is 0°, 5°, 10°, 15°, or 20°. The outlet end 4120 of the left guide vane 4100 is provided with a first outlet angle. The first outlet angle is located on the side of the left guide vane 4100 facing away from the right guide vane 4200 and is the angle between the tangent line 4121 of the outlet end 4120 and the front-to-back direction. The first outlet angle is defined as β1, and the value range of β1 is 0° to 20°, for example, β1 is 0°, 5°, 10°, 15°, or 20°. By optimizing the first outlet angle β1 and the second outlet angle β2, the convergence effect of the air outlet is ensured.

[0077] As shown in Figure 16, in some embodiments of the present application, the diverter 3000 is provided with a diversion starting point 3210, and the airflow starts to divert from the diversion starting point 3210, defining a first straight line 3211. The first straight line 3211 passes through the diversion starting point 3210 and extends in the front-to-back direction. The first straight line 3211 intersects with the cross-flow impeller 2000. By such a setting, the airflow resistance can be reduced.

[0078] Specifically, when the airflow flows from the cross-flow impeller 2000 to the diverter 3000, it needs to flow under the constraint of the air outlet section 1100 of the air duct 1000. In this embodiment, the first straight line 3211 passing through the diversion starting point 3210 is designed to intersect with the cross-flow impeller 2000, so that the cross-flow impeller 2000 and the diverter 3000 will not be offset too much from each other in space. This can avoid the need to set too many corners in the air outlet section 1100 of the air duct 1000, or can shorten the length of the air outlet section 1100 of the air duct 1000, which is beneficial to reducing the resistance of the airflow when passing through the air outlet section 1100.

[0079] As shown in Figure 16, in some embodiments of the present application, along the left and right directions, the distance between the first straight line 3211 and the center of the cross-flow wind wheel 2000 is designed to be no more than 0.2 times the diameter of the cross-flow wind wheel 2000, further limiting the degree of mutual offset between the diverter 3000 and the cross-flow wind wheel 2000 in space.

[0080] Specifically, the distance between the first straight line 3211 and the center of the cross-flow wind wheel 2000 is L1, and the diameter of the cross-flow wind wheel 2000 is D, satisfying that L1 is less than or equal to 0.2D, for example, L1 is 0.02D, 0.05D, 0.08D, 0.1D, 0.15D or 0.2D. Through such an arrangement, the diverter 3000 and the cross-flow wind wheel 2000 can overlap to a large extent in the front-to-back direction, so that the air outlet section 1100 of the air duct 1000 does not need to be designed to be tilted to a large extent to guide the airflow to the diverter 3000, thereby further reducing the resistance of the airflow.

[0081] Further, in combination with Figures 10 and 16, in some embodiments of the present application, the first straight line 3211 is located between the left side wall 1101 and the right side wall 1102 of the air outlet section 1100, and the first straight line 3211 is respectively at a preset distance from the left side wall 1101 and the right side wall 1102 of the air outlet section 1100, thereby further reducing the resistance to airflow.

[0082] Specifically, when the first straight line 3211 is located between the left side wall 1101 and the right side wall 1102 of the air outlet section 1100, the first straight line 3211 needs to be at a preset distance from the left side wall 1101 and the right side wall 1102 of the air outlet section 1100, that is, the first straight line 3211 neither contacts the left side wall 1101 of the air outlet section 1100 nor contacts the right side wall 1102 of the air outlet section 1100. In other words, along the front-to-back direction, part of the projection of the diverter 3000 can be projected onto the cross-flow wind wheel 2000, and part of the projection of the cross-flow wind wheel 2000 can be projected onto the diverter 3000. In this way, at least part of the airflow discharged by the cross-flow wind wheel 2000 can reach the diverter 3000 for diversion without contacting the left side wall 1101 and the right side wall 1102 of the air outlet section 1100, thereby further reducing the airflow resistance and improving the diversion effect.

[0083] As shown in conjunction with Figures 9 and 10 , in some embodiments of the present application, the air duct 1000 is provided with an air inlet 1200. When the crossflow impeller 2000 rotates, it is adapted to drive airflow from the air inlet 1200 into the air duct 1000, then flow through the air outlet section 1100 and be split by the diverter 3000, ultimately being discharged through the right air outlet 1121 and the left air outlet 1111. In this embodiment, by designing the diverter 3000, the crossflow impeller 2000, and the air inlet 1200 to be arranged from front to back, that is, in the front-to-back direction, at least a portion of the diverter 3000 overlaps with at least a portion of the crossflow impeller 2000, and at least a portion of the crossflow impeller 2000 overlaps with at least a portion of the air inlet 1200. This reduces the resistance of the airflow from the air inlet 1200 to the diverter 3000, thereby reducing energy loss in the airflow.

[0084] Furthermore, the tower fan has a shell 4000, and the shell 4000 has an inlet 4001. The airflow is suitable for flowing through the inlet 4001 and the air inlet 1200 in sequence and entering the air duct 1000. By designing the diverter 3000, the cross-flow impeller 2000, the air inlet 1200 and the inlet 4001 to be arranged from front to back, the wind resistance can be further reduced, which is more conducive to increasing the wind speed and air volume.

[0085] In some embodiments of the present application, the diverter 3000 includes a first functional module. The diverter 3000 can modify the environment through the first functional module, thereby increasing the functional attributes of the tower fan. For example, the first functional module can be used for heating, repelling mosquitoes, disinfecting, purifying, etc. Any function that can modify the environmental characteristics can be considered a first functional module.

[0086] 4 , 9 , 10 and 11 , in some embodiments of the present application, the tower fan includes an atomizer 5100, the first functional module includes a mist channel 3300 and the above-mentioned mist outlet 3110, the mist outlet 3110 is connected to the mist channel 3300, and the mist channel 3300 is connected to the atomizer 5100, the mist channel 3300 can receive the mist generated by the atomizer 5100, the mist outlet 3110 is arranged on the front side of the diverter 3000, and the mist entering the mist channel 3300 can be discharged toward the front through the mist outlet 3110.

[0087] Specifically, the coordination of the atomizer 5100, the mist channel 3300, and the mist outlet 3110 allows the tower fan to discharge a certain amount of mist, increasing the cooling effect. The atomizer 5100 is a device that can atomize water. For example, the atomizer 5100 is an ultrasonic atomizer that converts electrical energy into ultrasonic energy to disperse the water into mist. The atomization function can be activated synchronously with the air flow of the tower fan. The mist is transported to the mist outlet 3110 through the mist channel 3300 and then discharged forward. The mist is delivered to the target area along with the air flow. It can be understood that since the diverter 3000 separates the right air outlet 1121 and the left air outlet 1111, that is, the mist outlet 3110 is located between the right air outlet 1121 and the left air outlet 1111, the air outlet speeds of the right air outlet 1121 and the left air outlet 1111 are faster than the mist outlet speed of the mist outlet 3110. Therefore, the pressure in front of the mist outlet 3110 is greater than the pressure in front of the right air outlet 1121 and the pressure in front of the left air outlet 1111. When the mist is discharged from the mist outlet 3110, the mist can be quickly mixed into the airflows on the left and right sides, thereby quickly following the airflow to reach the target area, thereby improving the user experience.

[0088] As shown in Figures 4, 5, and 8, in some embodiments of the present application, the mist channel 3300 is designed to extend in the vertical direction, which is more suitable for the structural arrangement of a tower fan. The crossflow impeller 2000 and the air duct 1000 are arranged at the upper part of the tower fan, and the motor driving the impeller is arranged at the lower part of the tower fan. Generally speaking, the atomizer 5100 needs to store water in order to atomize the water. For this reason, the atomizer 5100 has a certain weight and is arranged at the lower part of the tower fan. Therefore, by designing the mist channel 3300 to extend in the vertical direction, the mist outlet 3110 and the atomizer 5100 can be better connected.

[0089] Specifically, the mist outlet 3110 extends along the length of the mist channel 3300, so that mist can be discharged in the upper and lower directions through the mist outlet 3110. It is understandable that since mist is heavier than air, when the mist enters the mist channel 3300, the mist will gather at the lower position of the mist channel 3300, which may cause the bottom of the mist outlet 3110 to discharge a large amount of mist and the top of the mist outlet to discharge a small amount of mist. For this reason, in this embodiment, the width of the mist outlet 3110 (the dimension along the left and right direction) is designed to be larger from bottom to top. As long as the width of the upper position of the mist outlet 3110 is greater than the width of the lower position, it can be regarded as a larger design from bottom to top. In this way, the mist output of the mist outlet 3110 in the upper and lower directions is taken into account, making the mist output more uniform. In addition, by extending the mist outlet 3110 up and down, the mist output range of the mist outlet 3110 can be simultaneously improved. 2 and 3 , the width of the mist outlet 3110 is defined as w, and the value of w is 3 mm to 8 mm. For example, the width of the mist outlet 3110 at the lower position is 3 mm, and the width at the upper position is 6 mm.

[0090] 5 , 6 , 7 , 8 and 11 , in some embodiments of the present application, taking the mist channel 3300 extending in the up-down direction and the mist outlet 3110 extending along the mist channel 3300 as an example, a mist inlet 3310 is provided at the bottom end of the mist channel 3300, and the mist generated by the atomizer 5100 enters the mist channel 3300 through the mist inlet 3310 and fills the mist channel 3300 from bottom to top. As the mist enters the mist channel 3300, it has the inertia to flow upward along the mist channel 3300, and the mist outlet 3110 also extends along the mist channel 3300, which can easily lead to uneven mist output from the mist outlet 3110.

[0091] To this end, in this embodiment, the diverter 3000 is provided with a plurality of mist guide blades 3120, each of which is disposed at the mist outlet 3110. The plurality of mist guide blades 3120 are alternately arranged in the vertical direction, and from top to bottom, at least a portion of the downward projection of the mist guide blades 3120 is located at the mist inlet 3310. In this manner, the mist flowing upward through the mist inlet 3310 is at least partially blocked by the mist guide blades 3120, and is then forced to change direction and be discharged forward under the action of the mist guide blades 3120. The vertical arrangement of the plurality of mist guide blades 3120 improves the uniformity of mist discharge from the entire mist outlet 3110.

[0092] Furthermore, as shown in FIG8 , the lower side 3121 of the mist guide blade 3120 is designed to be inclined. This inclination of the lower side 3121 of the mist guide blade 3120 allows the mist to be directed diagonally upward. In other words, the lower side 3121 of the mist guide blade 3120 is tilted diagonally upward. For example, the angle of the lower side 3121 relative to the horizontal plane is γ, with a value of γ ranging from 2° to 10°. It is understood that when mist flows upward from the bottom and encounters an obstruction of the mist guide blade 3120, it will contact the lower side 3121 of the mist guide blade 3120 and be directed along the lower side 3121. Since mist is heavier than air, directing the mist diagonally upward helps prevent it from sinking and wetting the ground.

[0093] As shown in FIG8 , in some embodiments of the present application, the leading edge 3122 of the mist guide blade 3120 is designed to be located behind the leading edge 3111 of the mist outlet 3110, and a preset distance is provided between the leading edge 3122 of the mist guide blade 3120 and the leading edge 3111 of the mist outlet 3110. It is understood that when mist passes through the mist guide blade 3120, condensation forms on the mist guide blade 3120, which may drip downward under the action of gravity. By designing the leading edge 3122 of the mist guide blade 3120 to be located behind the leading edge 3111 of the mist outlet 3110 at a preset distance L2 (e.g., L2 has a value range of 3 mm to 8 mm), the condensation dripping from the mist guide blade 3120 remains behind the mist outlet 3110, thereby preventing the condensation from overflowing outside the tower fan to a certain extent.

[0094] As shown in FIG5 , in some embodiments of the present application, to facilitate the manufacture of the diverter 3000, the diverter 3000 includes a first component 3100 and a second component 3200. The second component 3200 is disposed behind the first component 3100 and is used to divert the airflow discharged from the crossflow. The first component 3100 is used to form a mist outlet 3110. By connecting the first component 3100 and the second component 3200, a mist passage 3300 is formed, facilitating manufacture. It is understood that the mist guide blades 3120 are also disposed on the first component 3100, so that the first component 3100 forms a grid-like structure. By designing the diverter 300 as a split structure, manufacturing is facilitated.

[0095] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A tower fan, wherein, The tower fan includes: An air duct; A cross-flow impeller disposed in the air duct; and A diverter disposed in the air outlet section of the air duct to divide the air outlet section of the air duct into a left flow channel and a right flow channel at the air outlet section. A left air outlet is formed at the end of the left flow channel, and a right air outlet is formed at the end of the right flow channel.

2. The tower fan according to claim 1, wherein, The diverter has a diversion starting point. The distance between the diversion starting point and the center of the cross-flow impeller in the front-rear direction is H, and H satisfies H = 1.3r to 1.8r, where r is the radius of the cross-flow impeller.

3. The tower fan according to claim 1 or 2, wherein, The diverter has a diversion starting point. In the left-right direction, the distance between the diversion starting point and the left side wall of the air outlet section is a1, and the distance between the diversion starting point and the right side wall of the air outlet section is a2. The width of the left air outlet is b1, and the width of the right air outlet is b2, and (a1 / a2) = (0.9 to 1.1) * (b1 / b2).

4. The tower fan according to any one of claims 1 to 3, wherein, The diverter has a diversion starting point. At least a part of the left flow channel inclines forward to the left from the diversion starting point, and at least a part of the right flow channel inclines forward to the right from the diversion starting point; The tower fan includes a left guide vane and a right guide vane. The left guide vane is disposed at the left air outlet and extends in the front-rear direction, and the right guide vane is disposed at the right air outlet and extends in the front-rear direction; The tangent line on the left side of the inlet end of the left guide vane points to the right rear, and the tangent line on the right side of the inlet end of the right guide vane points to the left rear.

5. The tower fan according to claim 4, wherein, A first inlet angle is formed at the inlet end of the left guide vane, and a second inlet angle is formed at the inlet end of the right guide vane. The ranges of the first inlet angle and the second inlet angle are 20° to 50° respectively.

6. The tower fan according to claim 4 or 5, wherein, The tangent line on the left side of the outlet end of the left guide vane points to the right front, and the tangent line on the right side of the outlet end of the right guide vane points to the left front.

7. The tower fan according to claim 6, wherein, A first outlet angle is formed at the outlet end of the left guide vane, and a second outlet angle is formed at the outlet end of the right guide vane. The ranges of the first outlet angle and the second outlet angle are 0° to 20° respectively.

8. The tower fan according to any one of claims 1 to 7, wherein, The diverter has a diversion starting point. A first straight line is drawn in the front-rear direction through the diversion starting point, and the first straight line intersects the cross-flow impeller.

9. The tower fan according to claim 8, wherein, The distance between the first straight line and the center of the cross-flow impeller in the left-right direction is not greater than 0.2 times the diameter of the cross-flow impeller.

10. The tower fan according to any one of claims 1 to 9, wherein, An air inlet is provided in the air duct, and the diverter, the cross-flow impeller, and the air inlet are arranged in sequence from front to back.

11. The tower fan according to any one of claims 1 to 10, wherein, The diverter includes a first functional module adapted to change the environment through the first functional module.

12. The tower fan according to claim 11, wherein, The tower fan includes an atomizer. The first functional module has a mist channel and a mist outlet communicated with the mist channel. The mist channel is communicated with the atomizer, and the mist outlet is disposed on the front side of the diverter.

13. The tower fan according to claim 12, wherein, The mist outlet extends in a long strip shape in the up-down direction; And / or, the mist channel extends in the up-down direction, the mist outlet extends along the mist channel to communicate with the mist channel, a mist inlet is provided at the bottom end of the mist channel, and the width of the mist outlet is set to increase from bottom to top.

14. The tower fan according to claim 12 or 13, wherein, The mist channel extends in the up-down direction, a mist inlet is provided at the bottom end of the mist channel, and the mist outlet extends along the mist channel; The shunt has fog guiding vanes, and a plurality of the fog guiding vanes are arranged at the fog outlet and are arranged at intervals in the up and down direction, and at least part of the projection of the fog guiding vanes from top to bottom is located at the fog inlet.

15. The tower fan according to claim 14, wherein, The lower side surface of the fog guiding vane is inclined to be suitable for guiding the fog towards the upper oblique direction; And / or, the leading edge of the fog guiding vane is located behind the leading edge of the fog outlet and is at a preset distance from the leading edge of the fog outlet.

16. The tower fan according to any one of claims 12 to 15, wherein, The shunt includes a first component and a second component located behind the first component. The first component and the second component are connected to enclose the fog passage. The fog outlet is arranged on the first component, and the second component is suitable for splitting the air flow.

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