Tower fan

Abstract

The tower fan comprises an air channel, a cross-flow wind wheel and a flow dividing device, the cross-flow wind wheel is arranged in the air channel, the flow dividing device is arranged on an air outlet section of the air channel so that the air outlet section of the air channel can be divided into a left side flow channel and a right side flow channel, a left side air outlet is formed in the tail end of the left side flow channel, and a right side air outlet is formed in the tail end of the right side flow channel. The flow dividing device is provided with a flow dividing starting point, and at least part of the flow dividing device gradually expands forwards from the flow dividing starting point. According to the tower fan, the flow dividing device is arranged on the air outlet section of the air duct, so that surrounding air is formed, the flowing uniformity of air flow finally exhausted out of the tower fan is improved, the air outlet skew phenomenon caused by the cross-flow wind wheel is avoided, and the air outlet comfort of the tower fan is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air supply devices, and in particular to a tower fan. Background Art

[0002] The tower fan includes an air duct and a crossflow impeller arranged in the air duct. The crossflow impeller rotates in the air duct to drive the air flow to flow and be discharged. It is precisely because the tower fan adopts the crossflow impeller, the characteristics of the crossflow impeller make the wind outlet effect of the tower fan poor, and the comfort of use needs to be improved. Utility Model Content

[0003] 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.

[0004] To achieve the above object, the present application discloses a tower fan, which comprises:

[0005] Air duct;

[0006] a crossflow fan wheel, the crossflow fan wheel being arranged in the wind duct; and

[0007] A flow diverter device is provided at the air outlet section of the air duct to separate a left flow channel and a right flow channel at 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. The flow diverter device has a flow diversion starting point, and the flow diverter device is gradually expanded from at least a part of the flow diversion starting point toward the front.

[0008] In some embodiments of the present application, the distance between the splitting 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.

[0009] In some embodiments of the present application, 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 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).

[0010] In some embodiments of the present application, at least a portion of the left flow channel is inclined from the flow divergence starting point toward the left front, and at least a portion of the right flow channel is inclined from the flow divergence starting point toward the right front;

[0011] The tower fan comprises a left guide vane and a right guide vane, wherein the left guide vane is arranged at the left air outlet and extends in the front-to-back direction, and the right guide vane is arranged at the right air outlet and extends in the front-to-back direction;

[0012] 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.

[0013] In some embodiments of the present application, the inlet end of the left guide vane forms a first inlet angle, and the inlet end of the right guide vane forms a second inlet angle, and the ranges of the first inlet angle and the second inlet angle are 20° to 50° respectively.

[0014] 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.

[0015] 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°.

[0016] In some embodiments of the present application, a first straight line is drawn along the front-to-back direction through the flow splitting starting point, and the first straight line intersects with the crossflow impeller.

[0017] In some embodiments of the present application, the distance between the first straight line and the center of the crossflow wind wheel in the left-right direction is not greater than 0.2 times the diameter of the crossflow wind wheel.

[0018] In some embodiments of the present application, the air duct is provided with an air inlet, and the flow splitter, the crossflow impeller and the air inlet are arranged in sequence from front to back.

[0019] The technical solution of the present application forms an encircling wind by setting a diverter device 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 air outlet skew phenomenon caused by the cross-flow wind wheel, and thus improving the air outlet comfort of the tower fan.

[0020] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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.

[0022] Figure 1 is a three-dimensional diagram of a tower fan in some embodiments;

[0023] Figure 2 is a front view of a tower fan in some embodiments;

[0024] Figure 3 for Figure 2 The enlarged view marked as A in FIG.

[0025] Figure 4 An exploded view of a tower fan in some embodiments;

[0026] Figure 5 A schematic diagram of a flow dividing device in some embodiments;

[0027] Figure 6 for Figure 5 The enlarged view marked as B in the figure;

[0028] Figure 7 for Figure 5 The enlarged image marked as C in the figure;

[0029] Figure 8 A cross-sectional view of a flow dividing device in some embodiments;

[0030] Fig. 9 is a cross-sectional view of a flow dividing device in some embodiments (taken along the horizontal direction);

[0031] Fig.10 for Fig. 9 The enlarged view marked as D in the figure;

[0032] Fig.11 for Fig. 9 The enlarged view marked with E in the figure;

[0033] Fig.12 is a schematic diagram of a left guide vane in some embodiments;

[0034] Fig.13 is a schematic diagram of a right guide vane in some embodiments;

[0035] Fig.14 A cross-sectional view of a flow dividing device in some embodiments (taken along the horizontal direction, showing H and r);

[0036] Fig.15 is a cross-sectional view of a flow dividing device in some embodiments (taken along the horizontal direction, showing a1, a2, b1 and b2);

[0037] Fig.16 A cross-sectional view of a flow dividing device in some embodiments (taken along the horizontal direction, showing L1 and D);

[0038] Fig.17 2 is a diagram of tower fan airflow simulation in some embodiments.

[0039] Description of Figure Numbers:

[0040] 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, crossflow impeller 2000, flow 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, flow splitting starting point 3210, first straight line 3211, mist channel 3 300, mist inlet 3310, housing 4000, inlet 4001, left guide vane 4100, inlet end 4110 of left guide vane 4100, tangent 4111 on the left side of inlet end 4110, outlet end 4120 of left guide vane 4100, tangent 4121 on the left side of outlet end 4120, right guide vane 4200, inlet end 4210 of right guide vane 4200, tangent 4211 on the right side of inlet end 4210, outlet end 4220 of right guide vane 4200, tangent 4221 on the right side of outlet end 4220, atomizer 5100.

[0041] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] 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 components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. 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.

[0046] The present application proposes a tower fan, combined with Figure 1 , Figure 2 , Figure 4 , Fig. 9 and Fig.10 As shown, in some embodiments of the present application, the tower fan includes an air duct 1000, a crossflow fan wheel 2000 and a diverter device 3000. The crossflow fan wheel 2000 is arranged in the air duct 1000. When the crossflow airflow rotates in the air duct 1000, it can drive the air flow. The diverter device 3000 is arranged in the air outlet section 1100 of the air duct 1000, so as to separate 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. The diverter device 3000 has a diversion starting point 3210, and the diverter device 3000 is designed to be gradually expanded from at least a part of the diversion starting point 3210 toward the front.

[0047] By setting the diverter device 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 skewed air outlet phenomenon caused by the cross-flow wind wheel 2000, and thus improving the air outlet comfort of the tower fan.

[0048] 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.

[0049] The tower fan includes an air duct 1000, a crossflow fan wheel 2000 and a motor. The crossflow fan wheel 2000 is arranged in the air duct 1000 and is rotatable relative to the air duct 1000. The crossflow fan wheel 2000 is assembled with the air duct 1000 and is arranged above the motor. The motor and the crossflow fan wheel 2000 are drivingly connected, and the motor can drive the crossflow 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 a right air outlet 1121 and a left air outlet 1111). The airflow driven by the crossflow fan wheel 2000 enters the air duct 1000 from the air inlet 1200 and is then discharged through the air outlet.

[0050] In the related art, the crossflow wind wheel 2000 is extended in the up and down directions. When the crossflow wind wheel 2000 rotates, due to the characteristics of the crossflow wind wheel 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.

[0051] To this end, in the present embodiment, a diverter device 3000 is provided, and the diverter device 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 crossflow 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 device 3000 only needs to be provided in the air outlet section 1100. The present embodiment does not limit whether the diverter device 3000 completely occupies the air outlet section 1100 along the extension direction (airflow direction) of the air outlet section 1100. In this way, the diversion device 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 oriented in the left and right directions relative to each other.

[0052] When the airflow discharged from the crossflow impeller 2000 flows to the flow splitter 3000, it is divided into two airflows under the action of the flow splitter 3000, one of which flows along the right flow channel 1120 and is discharged through the right air outlet 1121, and the other flows along the left flow channel 1110 and is discharged through the left air outlet 1111. Fig. 9The orientation shown is for reference only. If the flow splitter 3000 is not provided, the airflow discharged from the crossflow impeller 2000 will deviate toward the left front. However, by providing the flow splitter 3000, when the airflow flows to the flow splitter 3000, the airflow deviated toward the left front will encounter the obstruction of the flow splitter 3000 and then change direction to enter the right flow channel 1120. Fig.17 In the airflow simulation shown, the airflow discharged from the crossflow impeller 2000 near the right side wall 1102 of the air outlet section 1100 has an inertia to deviate to the left. When flowing to the diverter device 3000, the diverter device 3000 blocks and redirects this part of the airflow, thereby eliminating the left-deflected inertia of this part of the airflow, and then makes this part of the airflow be discharged from the right side air outlet 1121. In this way, the skewed air outlet phenomenon of the tower fan can be avoided to a certain extent, and the uniformity of the air outlet can be improved.

[0053] It can be understood that, through the setting of the diverter device 3000, the diverter device 3000 forms an obstruction to a certain extent. In order to minimize the loss of airflow energy caused by the diverter device 3000, in the present embodiment, the diverter device 3000 is provided with a diverter starting point 3210, and the airflow starts to divert from the diverter starting point 3210. The so-called diverter starting point 3210 is the position of the diverter device 3000 closest to the cross-flow impeller 2000 along the extension direction of the air duct 1000, and the diverter device 3000 is gradually expanded from at least a part of the diverter starting point 3210. For example, the end of the diverter device 3000 facing the airflow forms a tip structure. In this way, the airflow generated by the cross-flow impeller 2000 will first contact the diverter starting point 3210, and will be divided into two airflows entering the right flow channel 1120 and the left flow channel 1110 from the diverter starting point 3210, thereby minimizing the resistance of the diverter device 3000 to the airflow.

[0054] Combination Fig.14 As shown, in some embodiments of the present application, along the front-to-back direction, the distance between the center of the crossflow wind wheel 2000 and the diversion starting point 3210 is defined as H, and the radius of the crossflow wind wheel 2000 is r, which needs to satisfy the condition H=1.3r~1.8r. By such a setting, the diversion effect of the diversion device 3000 on the airflow is further improved.

[0055] Specifically, since the diverter device 3000 is arranged in the air outlet section 1100 of the air duct 1000, it is equivalent to forming a certain obstruction to the flow of airflow to a certain extent, and the formation of airflow is caused by the work done by the crossflow impeller 2000 on the air. If H is designed to be too small, that is, the diverter device 3000 is too close to the crossflow impeller 2000, then the crossflow impeller 2000 starts to divert before it has completely done work, which will greatly reduce the air volume. If H is designed to be too large, as mentioned above, the characteristics of the crossflow impeller 2000 cause the airflow to deviate to one side. If H is designed to be too large, the diverter device 3000 is far away from the crossflow impeller 2000, and the airflow needs to be corrected at a large angle to reach the diverter device 3000, increasing the resistance. In addition, due to the limited size of the tower fan, an excessively large H is not conducive to the arrangement of the structure 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 the airflow energy loss.

[0056] Combination Fig.15 As shown, 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, that 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.

[0057] Specifically, as mentioned above, the characteristics of the crossflow impeller 2000 cause the airflow to deviate to one side, and the diverter device 3000 can suppress the deviation of the airflow to a certain extent, thereby facilitating the uniformity of the 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), so that the airflow of the right air outlet 1121 can be matched with the airflow of the left air outlet 1111 to the maximum extent, further reducing the difference in air volume and wind speed between the right air outlet 1121 and the left air outlet 1111, and improving the comfort of the airflow.

[0058] Combination Fig.10As shown, in some embodiments of the present application, at least a portion of the right flow channel 1120 tilts toward the right front from the divergence starting point 3210 , while at least a portion of the left flow channel 1110 tilts toward the left front from the divergence starting point 3210 . For example, the upstream portion of the right flow channel 1120 is inclined from the diversion starting point 3210 toward the right front, while the downstream portion of the right flow channel 1120 extends in the front-to-back direction, and the right air outlet 1121 is arranged in the downstream portion of the right flow channel 1120, and the upstream portion of the left flow channel 1110 is inclined from the diversion starting point 3210 toward the left front, while the downstream portion of the left flow channel 1110 extends in the front-to-back direction. Through the inclined setting of the upstream portion of the right flow channel 1120 and the upstream portion of the left flow channel 1110, it is easier to guide the airflow when the diversion device 3000 realizes the airflow diversion, and through the front-to-back extension of the downstream portion of the right flow channel 1120 and the downstream portion of the left flow channel 1110, it is more convenient to realize the positive (front) air outlet of the tower fan.

[0059] It can be understood that at least part of the right-side flow channel 1120 is inclined, that is, when the airflow flows through at least part of the right-side flow channel 1120, it flows toward the right front. Similarly, at least part of the left-side flow channel 1110 is inclined, that is, when the airflow flows through at least part of the left-side flow channel 1110, it flows toward the left front.

[0060] In order to further improve the uniformity of air flow, continue to combine Fig.10 As shown, the tower fan includes a right guide vane 4200 and a left guide vane 4100. The right guide vane 4200 is arranged at the right air outlet 1121 for guiding the airflow discharged from the right air outlet 1121. The left blade is arranged at the left air outlet 1111 for guiding 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. Through the design of the right guide vane 4200 and the left guide vane 4100, the air outlet through the right air outlet 1121 and the left air outlet 1111 is more uniform. In addition, in this embodiment, the right guide vane 4200 and the left guide vane 4100 need to be designed to extend in the front-to-back direction, which is more conducive to realizing the steam box (front) air outlet of 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, such as to be more conducive to guiding the diverted airflow to flow through the right guide vane 4200 / left guide vane 4100, further reducing the flow resistance of the airflow, and achieving a better diversion effect.

[0061] This is because, as mentioned above, at least part of the right flow channel 1120 is inclined from the divergence starting point 3210 toward the right front, while at least part of the left flow channel 1110 is inclined from the divergence 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 that the airflow of the right flow channel 1120 is better received, 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 that the airflow of the left flow channel 1110 is better received, thereby guiding these airflows to be discharged toward the front.

[0062] For example, combined with Fig.10 , Fig.12 and Fig.13 As shown, the inlet end 4210 of the right guide vane 4200 is provided with a second inlet angle, which is located on the side of the right guide vane 4200 away from the left guide vane 4100, and is the angle between the tangent 4211 of the inlet end 4210 and the front-rear direction, and 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, which is located on the side of the left guide vane 4100 away from the right guide vane 4200, and is the angle between the tangent 4111 of the inlet end 4110 and the front-rear direction, and 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 acceptance and diversion effect of the airflow.

[0063] Combination Fig.10 , Fig.12 and Fig.13 As shown, 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 that the wind discharged from the right air outlet 1121 and the wind discharged from the left air outlet 1111 can be better converged, thereby achieving stronger air supply.

[0064] It can be understood that since the right air outlet 1121 and the left air outlet 1111 are separated by the diversion device 3000, the airflow discharged from the right air outlet 1121 and the left air outlet 1111 is divided into two streams and 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 are converged, thereby achieving air supply over a longer distance.

[0065] For example, combined with Fig.10 , Fig.12 and Fig.13 As shown, the outlet end 4220 of the right guide vane 4200 is provided with a second outlet angle, which is located on the side of the right guide vane 4200 away from the left guide vane 4100, and is the angle between the tangent 4221 of the outlet end 4220 and the front-to-back direction, and 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, which is located on the side of the left guide vane 4100 away from the right guide vane 4200, and is the angle between the tangent 4121 of the outlet end 4120 and the front-to-back direction, and 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 outlet air is ensured.

[0066] Combination Fig.16 As shown, in some embodiments of the present application, a first straight line 3211 is defined. 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 crossflow impeller 2000. By such a configuration, the airflow resistance can be reduced.

[0067] Specifically, when the airflow flows from the crossflow impeller 2000 to the diverter device 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 diverter starting point 3210 is designed to intersect with the crossflow impeller 2000, so that the crossflow impeller 2000 and the diverter device 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.

[0068] Combination Fig.16 As shown, in some embodiments of the present application, along the left-right direction, the distance between the first straight line 3211 and the center of the cross-flow wind wheel 2000 is designed to be no greater than 0.2 times the diameter of the cross-flow wind wheel 2000, further limiting the degree of mutual offset between the diverter device 3000 and the cross-flow wind wheel 2000 in space.

[0069] Specifically, the distance between the first straight line 3211 and the center of the crossflow wind wheel 2000 is L1, and the diameter of the crossflow 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 device 3000 and the crossflow 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 device 3000, thereby further reducing the resistance of the airflow.

[0070] Furthermore, combined with Fig.10 and 16 As shown, 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, which can further reduce the resistance to airflow.

[0071] 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 is neither in contact with the left side wall 1101 of the air outlet section 1100 nor in contact with 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 device 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 device 3000. In this way, at least part of the airflow discharged by the cross-flow wind wheel 2000 can reach the diverter device 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.

[0072] Combination Fig. 9 and Fig.10As shown, 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 suitable for driving the airflow from the air inlet 1200 into the air duct 1000, and then flows through the air outlet section 1100 and is then diverted by the diverter 3000, and finally 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, along the direction from front to back, at least part of the diverter 3000 overlaps with at least part of the crossflow impeller 2000, and at least part of the crossflow impeller 2000 overlaps with at least part of the air inlet 1200, so that the resistance of the airflow when it reaches the diverter 3000 from the air inlet 1200 can be reduced, and the energy loss of the airflow can be reduced.

[0073] 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 device 3000, the cross-flow wind wheel 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.

[0074] Combination Figure 4 , Fig. 9 , Fig.10 and Fig.11 As shown, in some embodiments of the present application, the tower fan includes an atomizer 5100, the diversion device 3000 is provided with 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 provided on the front side of the diversion device 3000, and the mist entering the mist channel 3300 can be discharged toward the front through the mist outlet 3110.

[0075] Specifically, through the cooperation of the atomizer 5100, the mist channel 3300 and the mist outlet 3110, the tower fan can discharge a certain amount of mist to increase the coolness. The atomizer 5100 is a device that can atomize water. For example, the atomizer 5100 is an ultrasonic atomizer, which converts electrical energy into ultrasonic energy to break up the water to form mist. The atomization function can be started synchronously with the wind outlet of the tower fan. The mist is transported to the mist outlet 3110 through the mist channel 3300 and then discharged to the front. The mist follows the airflow to the target area. It can be understood that since the diversion device 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 following the airflow to quickly reach the target area, thereby improving the user experience.

[0076] Combination Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments of the present application, the mist channel 3300 is designed to extend in the up-down direction, which is more suitable for the structural arrangement of the 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 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 up-down direction, the connection between the mist outlet 3110 and the atomizer 5100 can be better achieved.

[0077] Specifically, the mist outlet 3110 extends along the length of the mist channel 3300, so that the mist can be discharged through the mist outlet 3110 in both the up and down directions. It is understandable that since the mist is heavier than the air, when the mist enters the mist channel 3300, the mist will gather at the lower part of the mist channel 3300, which may cause a large amount of mist to be discharged from the bottom of the mist outlet 3110 and a small amount of mist to be discharged from the top. For this reason, in this embodiment, the width of the mist outlet 3110 (the dimension along the left and right direction) is designed to increase from bottom to top. As long as the width of the upper part of the mist outlet 3110 is greater than the width of the lower part, it can be regarded as a design that increases from bottom to top. In this way, the amount of mist discharged from the mist outlet 3110 in the up and down directions is taken into account, making the mist discharge more uniform. In addition, by extending the mist outlet 3110 up and down, the mist discharge range of the mist outlet 3110 can be simultaneously increased. Combined with Figure 2 and Figure 3 As shown, the width of the mist outlet 3110 is defined as w, and the value of w is 3mm to 8mm. For example, the width of the mist outlet 3110 at the lower position is 3mm, and the width at the upper position is 6mm.

[0078] Combination Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.11 As shown, in some embodiments of the present application, taking the case where the mist channel 3300 extends in the up-down direction and the mist outlet 3110 extends 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 easily leads to uneven mist outlet 3110.

[0079] To this end, in this embodiment, the diverter device 3000 is provided with a mist guide blade 3120, and the number of the mist guide blades 3120 is multiple, and the multiple mist guide blades 3120 are arranged at the mist outlet 3110, and the multiple mist guide blades 3120 are arranged alternately along the up-down direction, and along the top-down direction, at least part of the projection of the mist guide blade 3120 facing downward is located at the mist inlet 3310. In this way, the mist flowing upward through the mist inlet 3310 can encounter at least part of the obstruction of the mist guide blade 3120, and then under the action of the mist guide blade 3120, the mist is forced to change direction and be discharged toward the front, and the multiple mist guide blades 3120 arranged along the up-down direction improve the uniformity of the mist discharge of the entire mist outlet 3110.

[0080] Furthermore, combined with Figure 8 As shown, the lower side surface 3121 of the mist guide blade 3120 is designed to be inclined. By the inclined setting of the lower side surface 3121 of the mist guide blade 3120, the mist can be guided to be discharged obliquely upward, that is, the lower side surface 3121 of the mist guide blade 3120 is inclined toward obliquely upward. For example, the angle of the lower side surface 3121 relative to the horizontal plane is γ, and the value range of γ is 2° to 10°. It can be understood that when the mist flows from bottom to top and encounters the obstruction of the mist guide blade 3120, it will contact the lower side surface 3121 of the mist guide blade 3120, and then be discharged along the lower side surface 3121. Since the mist is heavier than the air, discharging the mist toward obliquely upward is conducive to preventing the mist from sinking and wetting the ground.

[0081] Combination Figure 8As shown, 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 the leading edge 3122 of the mist guide blade 3120 is at a preset distance from the leading edge 3111 of the mist outlet 3110. It is understandable that when the mist passes through the guidance of the mist guide blade 3120, condensed water will be formed on the mist guide blade 3120, and the condensed water may drip downward under the action of gravity. By designing the leading edge 3122 of the mist guide blade 3120 to be at a preset distance L2 from the leading edge 3111 of the mist outlet 3110, for example, the value range of L2 is 3mm to 8mm, the condensed water dripping from the mist guide blade 3120 is still behind the mist outlet 3110, which can prevent the condensed water from overflowing outside the tower fan to a certain extent.

[0082] Combination Figure 5 As shown, in some embodiments of the present application, in order to facilitate the manufacture of the diverter device 3000, the diverter device 3000 includes a first component 3100 and a second component 3200. The second component 3200 is arranged behind the first component 3100 to divert the airflow discharged from the cross-flow, and the first component 3100 is used to form a mist outlet 3110. By connecting the first component 3100 and the second component 3200, the mist channel 3300 is formed, which is convenient for manufacturing. It can be understood that the mist guide blades 3120 are also arranged on the first component 3100, so that the first component 3100 forms a grid-like structure, and the diverter device 3000 is designed as a split structure to facilitate manufacturing.

[0083] 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 changes made based on the concept of the present application and the contents of the present application description 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, It is characterized in that The tower fan comprises: Air duct; A crossflow impeller is disposed in the air duct; and The diverter device is arranged at the air outlet section of the air duct to separate the left flow channel and the 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. The diverter device has a diversion starting point, and the diverter device is gradually expanded from the diversion starting point at least partially toward the front.

2. The tower fan according to claim 1, It is characterized in that The distance between the flow splitting starting point and the center of the crossflow wind wheel in the front-to-back direction is H, which satisfies H=1.3r~1.8r, where r is the radius of the crossflow wind wheel.

3. The tower fan according to claim 1, It is characterized in that 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 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).

4. The tower fan according to claim 1, It is characterized in that At least a portion of the left flow channel is inclined from the flow divergence starting point toward the left front, and at least a portion of the right flow channel is inclined from the flow divergence starting point toward the right front; The tower fan comprises a left guide vane and a right guide vane, wherein the left guide vane is arranged at the left air outlet and extends in the front-to-back direction, and the right guide vane is arranged at the right air outlet and extends in the front-to-back 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, It is characterized in that The inlet end of the left guide vane forms a first inlet angle, and the inlet end of the right guide vane forms a second inlet angle. The ranges of the first inlet angle and the second inlet angle are respectively 20° to 50°.

6. The tower fan according to claim 4, It is characterized in that 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, It is characterized in that 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. The ranges of the first outlet angle and the second outlet angle are respectively 0° to 20°.

8. The tower fan according to claim 1, It is characterized in that A first straight line is drawn along the front-to-back direction through the flow splitting starting point, and the first straight line intersects with the crossflow impeller.

9. The tower fan according to claim 8, It is characterized in that A 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.

10. The tower fan according to claim 1, It is characterized in that The air duct is provided with an air inlet, and the flow splitter, the crossflow impeller and the air inlet are arranged in sequence from front to back.

Images