A tower fan

Abstract

The utility model relates to fan technical field, concretely is a tower fan, forms the air supply passage between the cross flow fan wheel and fan casing inner side wall, is equipped with the grating air outlet that communicates with the air supply passage on the fan casing, the flow cross section of air supply passage is along the vertical direction and is inclined to set to make after the airflow output from cross flow fan wheel, can gently stick to the fan casing inner wall flow, avoid the airflow "right angle impact" the situation that fan casing inner side wall occurs, is favorable to reduce the vortex that produces because airflow sharp turn, effectively solved the current tower fan through drive motor drive cross flow fan wheel rotation to produce airflow, however, fan casing and cross flow fan wheel are along the vertical direction and are parallelly arranged to make the airflow produced blows along the horizontal direction that is perpendicular to cross flow fan wheel axis, airflow direction and shell inner wall angle are big, are easy in the vortex that produces in the air duct corner or grating air outlet edge, lead to the problem that the fan operation noise is too big.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a tower fan. Background Technology

[0002] Tower fans, a common type of modern indoor ventilation equipment, offer significant advantages in space adaptability. Their upright and compact design allows them to seamlessly integrate into various settings such as living rooms, bedrooms, and offices, without taking up excessive floor space. Tower fans achieve wide-ranging and uniform air circulation during operation, and with multiple speed settings, they meet the ventilation needs of different users. Furthermore, thanks to their optimized airflow design, they operate with low noise, contributing to a quieter user experience.

[0003] Existing tower fans typically house a drive motor and a cross-flow impeller within the fan casing. The drive motor rotates the cross-flow impeller to generate airflow. However, the fan casing and the cross-flow impeller are arranged parallel to each other in the vertical direction, causing the generated airflow to be blown out in a horizontal direction that is approximately perpendicular to the axis of the cross-flow impeller. The airflow direction makes a large angle with the inner wall of the casing, which easily generates vortices at the corners of the air duct or the edges of the air outlet of the grille, resulting in excessive noise during fan operation.

[0004] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0005] Regarding the aforementioned problem that existing tower fans generate airflow by driving a cross-flow impeller to rotate using a drive motor, but the fan casing and the cross-flow impeller are arranged parallel to each other in the vertical direction, causing the generated airflow to be blown out in a horizontal direction approximately perpendicular to the axis of the cross-flow impeller, resulting in a large angle between the airflow direction and the inner wall of the casing, which easily leads to vortices at the corners of the air duct or the edges of the air outlet, resulting in excessive noise during fan operation, the technical solution adopted by this utility model to solve this problem is:

[0006] A tower fan includes a fan body, which includes a fan housing, a drive motor, and a cross-flow impeller. The drive motor and the cross-flow impeller are both disposed inside the fan housing. The drive motor drives the cross-flow impeller to rotate to generate airflow. An air delivery channel is formed between the cross-flow impeller and the inner sidewall of the fan housing. The fan housing is provided with a grille outlet communicating with the air delivery channel. The flow section of the air delivery channel is inclined in the vertical direction to reduce airflow noise.

[0007] Furthermore, the cross-flow fan is arranged vertically, and the cross-flow fan includes a first end face at the top and a second end face at the bottom. The fan housing extends obliquely from the first end face toward the second end face, so that the cross-section of the air supply channel is a trapezoidal shape that gradually narrows from bottom to top.

[0008] Furthermore, the fan housing includes a front housing, the grille air outlet is disposed on the front housing, and the inner sidewall of the front housing is provided with a guide plate and a cut-off plate, the guide plate and the cut-off plate being respectively disposed on opposite sides of the grille air outlet.

[0009] Furthermore, both the air guide plate and the air interceptor plate are detachably mounted on the inner wall of the front housing.

[0010] Furthermore, the fan body includes a fixed base, and a swing mechanism is provided between the fixed base and the fan housing. Under the action of the swing mechanism, the fan housing, the drive motor and the cross-flow impeller can all rotate synchronously relative to the fixed base in a horizontal circumferential direction.

[0011] Furthermore, the swing mechanism includes a swing support, which is connected to the fan housing and located above the fixed base. The drive motor is mounted on the swing support, and a sliding mechanism is provided between the swing support and the fixed base.

[0012] Furthermore, the fixed base has an installation cavity, and the rocking mechanism includes a rocking motor disposed in the installation cavity, a rocking component that is drivenly connected to the output end of the rocking motor, and a rocking connecting rod. The rocking support has a rocking connecting part that extends toward the fixed base. One side of the rocking connecting rod is hinged to the rocking connecting part, and the other side of the rocking connecting rod is hinged to the rocking component.

[0013] Furthermore, the rocking mechanism includes a rocking motor disposed on the rocking support, a rocking component that is drivenly connected to the output end of the rocking motor, and a rocking connecting rod. The output end of the rocking motor is disposed in the direction of the fixed base. The fixed base is provided with a rocking extension portion extending in the direction of the rocking support. One side of the rocking connecting rod is hinged to the rocking extension portion, and the other side of the rocking connecting rod is hinged to the rocking component.

[0014] Furthermore, the fixed base is provided with a receiving groove on the side near the rocker support. There are multiple receiving grooves, which are spaced apart along the circumference of the fixed base. The sliding mechanism includes sliding balls corresponding to the receiving grooves and a sliding groove provided on the side of the rocker support near the fixed base and extending along the circumference of the rocker support. The sliding balls slide in cooperation with the sliding groove to support the rocker support to rotate relative to the fixed base in a horizontal circumferential direction.

[0015] Furthermore, a swing gap is provided between the fixed base and the fan housing to allow the fan housing to swing relative to the fixed base.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention forms an air supply channel between the cross-flow impeller and the inner wall of the fan housing. The fan housing has a grille outlet that communicates with the air supply channel. The flow section of the air supply channel is inclined in the vertical direction so that the airflow can flow smoothly along the inner wall of the fan housing after being output from the cross-flow impeller. This avoids the airflow hitting the inner wall of the fan housing at a right angle, which helps to reduce vortices caused by sharp turns in the airflow. This effectively solves the problem of existing tower fans that generate airflow by driving the cross-flow impeller to rotate through a drive motor. However, the fan housing and the cross-flow impeller are arranged parallel in the vertical direction, so that the generated airflow is blown out in a horizontal direction that is approximately perpendicular to the axis of the cross-flow impeller. The angle between the airflow direction and the inner wall of the housing is large, which easily generates vortices at the corners of the air duct or the edge of the grille outlet, resulting in excessive noise when the fan is running.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the fan body of this utility model;

[0020] Figure 2 for Figure 1 Cross-sectional view along line AA;

[0021] Figure 3 for Figure 2 An enlarged view of section C marked thereon;

[0022] Figure 4 This is one of the exploded view diagrams of the fan body of this utility model;

[0023] Figure 5 This is the second structural schematic diagram of the fan body of this utility model;

[0024] Figure 6 for Figure 5 Cross-sectional view along line BB;

[0025] Figure 7 This is a second exploded view and a partially enlarged view of the fan body of this utility model;

[0026] Figure 8 This is the third exploded view of the fan body of this utility model;

[0027] Figure 9 This is the fourth exploded view of the fan body of this utility model;

[0028] Figure 10 This is the fifth exploded view of the fan body of this utility model;

[0029] Figure 11 This is the sixth exploded view of the fan body of this utility model. Detailed Implementation

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] like Figures 1 to 11 A tower fan is shown, including a fan body, which includes a fan housing 1, a drive motor 2, and a cross-flow impeller 3. The drive motor 2 and the cross-flow impeller 3 are both disposed inside the fan housing 1. The drive motor 2 drives the cross-flow impeller 3 to rotate to generate airflow. An air delivery channel 30 is formed between the cross-flow impeller 3 and the inner side wall of the fan housing 1. The fan housing 1 is provided with a grille outlet 11 that communicates with the air delivery channel 30. The flow section of the air delivery channel 30 is inclined in the vertical direction to reduce airflow noise.

[0032] This invention forms an air supply channel between the cross-flow impeller and the inner wall of the fan housing. The fan housing has a grille outlet that communicates with the air supply channel. The flow section of the air supply channel is inclined in the vertical direction so that the airflow can flow smoothly along the inner wall of the fan housing after being output from the cross-flow impeller. This avoids the airflow hitting the inner wall of the fan housing at a right angle, which helps to reduce vortices caused by sharp turns in the airflow. This effectively solves the problem of existing tower fans that generate airflow by driving the cross-flow impeller to rotate through a drive motor. However, the fan housing and the cross-flow impeller are arranged parallel in the vertical direction, so that the generated airflow is blown out in a horizontal direction that is approximately perpendicular to the axis of the cross-flow impeller. The angle between the airflow direction and the inner wall of the housing is large, which easily generates vortices at the corners of the air duct or the edge of the grille outlet, resulting in excessive noise when the fan is running.

[0033] Specifically, in a traditional tower fan, the fan housing 1 and the cross-flow impeller 3 are arranged parallel to each other in the vertical direction, causing the generated airflow to directly and violently impact the inner wall of the fan housing 1 or the edge of the grille outlet 11 at an angle close to 90 degrees, thus generating huge "wind shearing" noise. However, in this invention, the air supply channel 30 has a flow section that is inclined in the vertical direction, allowing the airflow to contact the inner wall of the fan housing 1 or the edge of the grille outlet 11 at a smaller angle. The airflow is like "gliding" rather than "impacting", thus greatly reducing airflow noise.

[0034] Specifically, the flow section of the air supply channel 30 refers to the cross section perpendicular to the airflow direction in the air supply channel 30 formed between the cross-flow impeller 3 and the inner wall of the fan housing 1.

[0035] like Figures 1 to 11The cross-flow fan 3 shown is arranged in a vertical direction. The cross-flow fan 3 includes a first end face 31 at the top and a second end face 32 at the bottom. The fan housing 1 extends obliquely from the first end face 31 toward the second end face 32, so that the cross-section of the air supply channel 30 is a trapezoidal shape that gradually narrows from bottom to top.

[0036] Furthermore, the cross-flow impeller 3 is arranged vertically and the fan housing 1 extends at an angle from the first end face 31 to the second end face 32, so that the cross-section of the air supply channel 30 is a trapezoidal shape that gradually narrows from bottom to top. The trapezoidal cross-section makes the lower space of the air supply channel 30 more spacious, which can accommodate a large amount of airflow generated at the bottom of the cross-flow impeller 3 and avoid the airflow from being congested at the bottom. The structure that gradually narrows at the top can guide the airflow to accelerate smoothly, reduce the turbulence caused by the sudden change in space in the air supply channel 30, and at the same time avoid the airflow from forming a large angle impact with the inner wall of the inclined fan housing 1, thereby reducing the generation of vortices at the corners of the air supply channel 30 from the root and solving the problem of excessive noise.

[0037] Furthermore, the fan housing 1 is inclined and extends from the first end face 31 toward the second end face 32, so that the cross-section of the air supply channel 30 is a trapezoidal shape that gradually narrows from bottom to top. This helps to reasonably compress the external volume of the fan housing 1 while ensuring the function of the air supply channel 30, avoiding the situation where the fan housing 1 is too bulky, and helps to reduce the space occupied by the fan body.

[0038] like Figures 1 to 11 The fan housing 1 shown includes a front housing 12, the grille air outlet 11 is disposed on the front housing 12, and the inner sidewall of the front housing 12 is provided with an air guide plate 4 and an air intercepting plate 5, the air guide plate 4 and the air intercepting plate 5 are respectively disposed on opposite sides of the grille air outlet 11.

[0039] Specifically, the air guide plate 4 receives the airflow from the air supply channel 30, and the airflow is smoothly guided to the air outlet of the grille by the curved air guide surface; while the air cut-off plate 5 can turbulentize the airflow in a secondary way and break the concentrated airflow. The cooperation between the air guide plate 4 and the air cut-off plate 5 can optimize the airflow by "guiding and dispersing", avoid the harsh feeling of direct blowing, and improve the comfort of air supply.

[0040] Furthermore, the cross-section of the air supply channel 30 is a trapezoidal shape that gradually narrows from bottom to top, which optimizes the airflow trajectory. The air guide plate 4 and the air interceptor plate 5 can regulate the airflow direction and prevent the edge of the grille outlet 11 from forming vortices due to airflow turbulence. The air guide plate 4 guides the airflow close to the grille outlet 11, and the air interceptor plate 5 buffers the impact, which is conducive to achieving dual noise reduction.

[0041] Specifically, the air guide plate 4 is located upstream of the cross-flow impeller 3 in the direction of rotation, and the air cut-off plate 5 is located downstream of the cross-flow impeller 3 in the direction of rotation. When the fan body is turned on, the drive motor 2 drives the cross-flow impeller 3 to rotate and generate airflow. The airflow diffuses and is output towards the air cut-off plate 5 under the action of the air guide plate 4. Then, the diffused airflow hits the air cut-off plate 5, which can disturb or break the airflow. The airflow is finally blown to the outside through the grille outlet 11.

[0042] Optionally, in some embodiments, the air guide plate 4 and the air interceptor plate 5 are integrally formed on the inner sidewall of the fan housing 1. This integral forming arrangement allows the air guide plate 4 and the air interceptor plate 5 to be tightly integrated with the fan housing 1, which helps to enhance the stability of the overall structure, reduce the number of connection points between components, and effectively reduce the risk of failure caused by loosening or falling off of components. Secondly, since the air guide plate 4 and the air interceptor plate 5 are integral with the fan housing 1, no additional assembly steps are required, which not only simplifies the production process and reduces production costs, but also reduces the errors that may occur during the assembly process.

[0043] Optionally, in some embodiments, the air guide plate 4 and the air interceptor plate 5 are detachably disposed on the inner side wall of the fan housing 1; further, the air guide plate 4 and the air interceptor plate 5 can be installed on the inner side wall of the fan housing 1 by means of snap-fit ​​connection, slot connection, threaded connection or other connection methods.

[0044] Optionally, a decorative light is provided on the outer wall of the fan housing 1. The decorative light can present a variety of lighting effects such as warm light, cool light, and gradient light, which helps to break the single functional appearance of traditional tower fans.

[0045] Furthermore, the air guide plate 4 and the air interceptor plate 5 are both inclined and extended vertically on the side near the grille outlet 11, which helps to improve the accuracy of airflow guidance and the smoothness of flow. The inclined side of the air guide plate 4 can better fit the trajectory of the airflow flowing out of the air supply channel 30, and guide the airflow more accurately to the grille outlet 11, avoiding the airflow from turning back on the surface of the air guide plate 4. The inclined side of the air interceptor plate 5 can contact the airflow at a gentler angle, reducing the hard obstruction of the airflow, making the airflow smoother in the "guidance-dispersion" process, and further reducing the noise generated by airflow disturbance.

[0046] like Figures 1 to 11 The air guide plate 4 and the air interceptor plate 5 shown are both detachably mounted on the inner side wall of the front housing 12;

[0047] Furthermore, after long-term use, the air guide plate 4 and the air interceptor plate 5 are prone to accumulating dust or dirt. The detachable design allows users to directly remove the relevant parts for thorough cleaning, avoiding cleaning dead spots caused by the fixed structure. This helps ensure smooth airflow, reduces secondary noise and odor caused by dust, and effectively reduces maintenance difficulty.

[0048] Furthermore, the detachable design allows the air guide plate 4 and the air interceptor plate 5 to be manufactured and installed separately during the production process, which helps reduce the complexity and errors in the production process and thus improves production efficiency. Secondly, when the air guide plate 4 or the air interceptor plate 5 is damaged or deformed due to long-term use, the user can perform targeted maintenance or replace the relevant parts, which helps save maintenance time and costs.

[0049] Specifically, the air guide plate 4 is provided with an integrally formed mounting ear plate, and the air cut-off plate 5 is provided with a mounting through hole. The air guide plate 4 is threaded to the front housing 12 through the mounting ear plate, and the air cut-off plate 5 is threaded to the front housing 12 through the mounting through hole. The threaded connection is a very reliable connection method, which can ensure that the air guide plate 4 and the air cut-off plate 5 will not loosen or fall off during use, which is conducive to providing sufficient mechanical strength so that the components can remain stable when the fan body is running, and can maintain a good working condition even under long-term use or high wind speed.

[0050] Preferably, the air guide plate 4 is integrally formed. The integrally formed air guide plate 4 has no splicing or welding points during the manufacturing process, so that the overall structure is more robust and can withstand greater airflow pressure and mechanical stress. This helps to reduce the risk of failure caused by loose or broken parts and effectively improves the service life of the equipment.

[0051] Preferably, the wind-blocking plate 5 is integrally formed. The integrally formed wind-blocking plate 5 has no splicing or welding points during the manufacturing process, so that the overall structure is more robust and can withstand greater airflow pressure and mechanical stress. This helps to reduce the risk of failure caused by loose or broken parts and effectively improves the service life of the equipment.

[0052] like Figures 1 to 11 The fan body shown includes a fixed base 6, and a swing mechanism is provided between the fixed base 6 and the fan housing 1. Under the action of the swing mechanism, the fan housing 1, the drive motor 2 and the cross-flow impeller 3 can all rotate synchronously relative to the fixed base 6 in a horizontal circumferential direction.

[0053] Furthermore, a swing mechanism is provided between the fixed base 6 and the fan housing 1, so that the fan housing 1, the drive motor 2 and the cross-flow impeller 3 swing horizontally relative to the fixed base 6 in a synchronous manner. This is beneficial to expanding the air supply coverage. Compared with traditional fixed-outlet tower fans, the swing mechanism allows the airflow to rotate with the fan housing 1, thereby covering a larger area in the horizontal circumferential direction, which is beneficial to meeting the ventilation needs of multiple people using it at the same time or large spaces.

[0054] Specifically, the swing mechanism is configured to drive the fan housing 1, drive motor 2, and cross-flow impeller 3 as a whole to swing back and forth in the horizontal plane relative to the fixed base 6. The maximum swing angle is 35°, that is, the total sweep angle is 70°, rather than achieving 360° continuous rotation. This not only meets the wide-angle air supply needs in home or office environments and avoids excessive airflow concentration in a single direction, but also prevents power cord entanglement or structural interference caused by full-circuit rotation. At the same time, it reduces the requirements for the strength of the transmission mechanism and wiring design, which is conducive to improving the safety and reliability of the equipment.

[0055] like Figures 1 to 11 The swing mechanism shown includes a swing support 71, which is connected to the fan housing 1 and located above the fixed base 6. The drive motor 2 is mounted on the swing support 71, and a sliding mechanism is provided between the swing support 71 and the fixed base 6.

[0056] Furthermore, the swing support 71 connects to the fan housing 1 and carries the drive motor 2, which can centrally transmit the weight of the core components. By cooperating with the fixed base 6, the load is distributed, which helps to avoid the direct deformation of the components under stress, improves the structural stability of the fan body, and provides reliable support for the swing function.

[0057] Furthermore, the sliding mechanism can precisely control the movement trajectory of the sway support 71, ensuring the smoothness and accuracy of the swaying motion, so that the fan housing 1 can sway stably left and right along the horizontal circumference without shaking or jamming.

[0058] Optionally, in some embodiments, the sliding mechanism includes a slide rail disposed on the fixed base 6 and a slider disposed at the bottom of the rocker support 71. The slide rail extends along the direction of the rocker support 71 swinging relative to the fixed base 6. Limiting portions are provided at both ends of the slide rail to limit the swing range. The limiting portions can be limiting protrusions. The slide rail and the slider slide together to realize the swing of the rocker support 71 relative to the fixed base 6.

[0059] Optionally, in some embodiments, the sliding mechanism includes a sliding groove disposed on the fixed base 6 and a sliding bearing disposed at the bottom of the rocker support 71. The sliding groove extends along the direction of the rocker support 71 swinging relative to the fixed base 6. Limiting portions are provided at both ends of the sliding groove to limit the swing range. The sliding bearing can slide freely in the sliding groove, thereby realizing the swing of the rocker support 71 relative to the fixed base 6.

[0060] like Figures 7 to 8The fixed base 6 shown has a mounting cavity 61. The rocking mechanism includes a rocking motor 72 disposed in the mounting cavity 61, a rocking component 73 that is drivenly connected to the output end of the rocking motor 72, and a rocking connecting rod 74. The rocking support 71 has a rocking connecting part 711 that extends toward the fixed base 6. One side of the rocking connecting rod 74 is hinged to the rocking connecting part 711, and the other side of the rocking connecting rod 74 is hinged to the rocking component 73.

[0061] Furthermore, the swing motor 72 drives the swing component 73 to rotate, and the rotational motion is converted into the swing of the swing support 71 through the swing linkage 74. The hinge structure can flexibly transmit power, which helps to reduce motion jamming. With the stable support of the fixed base 6, it can accurately control the left and right swing of components such as the fan housing 1 along the horizontal circumference.

[0062] Furthermore, the swing motor 72 is fixed in the stationary fixed base 6 as the power source and does not need to move with the swing support 71. This helps to reduce the motion mass and rotational inertia of the swing system, making the swing start and stop more sensitive and the operation more stable, which helps to reduce swaying and vibration.

[0063] Specifically, the rocking motor 72 is fixed in the mounting cavity 61 inside the fixed base 6. The output end of the rocking motor 72 drives the rocking component 73 to rotate. The rocking component 73 is hinged to the rocking connection part 711 extending downward on the rocking support 71 through the rocking connecting rod 74. When the rocking component 73 rotates, the rotational motion is converted into a pushing and pulling action through the rocking connecting rod 74, thereby pushing or pulling the rocking support 71 to swing left and right relative to the fixed base 6 along a preset arc trajectory.

[0064] like Figures 9 to 10 The swing mechanism shown includes a swing motor 72 disposed on the swing support 71, a swing member 73 that is drivenly connected to the output end of the swing motor 72, and a swing connecting rod 74. The output end of the swing motor 72 is disposed in the direction of the fixed base 6. The fixed base 6 is provided with a swing extension 62 extending in the direction of the swing support 71. One side of the swing connecting rod 74 is hinged to the swing extension 62, and the other side of the swing connecting rod 74 is hinged to the swing member 73.

[0065] Furthermore, the swing motor 72 is directly mounted on the swing support 71, with its output end facing downward and connected to the swing component 73. Power can be directly transmitted to the swing component 73, and then hinged to the swing extension 62 of the fixed base 6 through the swing connecting rod 74, converting the rotational motion into the swing of the swing support 71. This helps to reduce intermediate links in power transmission, reduce losses, and effectively improve transmission efficiency.

[0066] Furthermore, the rocking motor 72 is mounted on the rocking support 71, eliminating the need to reserve installation space for the rocking motor 72 in the mounting cavity 61 of the fixed base 6. This simplifies the structural design of the fixed base 6, frees up space for other components, and helps reduce the weight burden on the fixed base 6.

[0067] Specifically, the swing motor 72 is mounted on the swingable support 71. The output end of the swing motor 72 is set towards the fixed base 6 and drives the swing component 73 to rotate. One end of the swing linkage 74 is hinged to the swing component 73, and the other end is hinged to the swing extension 62 extending towards the swing support 71 on the fixed base 6. When the swing component 73 rotates with the swing motor 72, the swing linkage 74 applies a periodic pushing and pulling force to the swing extension 62. Since the swing extension 62 set on the fixed base 6 is stationary, the reaction force pushes the swing support 71 to drive the entire fan housing 1 and internal components to swing left and right along a horizontal arc trajectory.

[0068] like Figures 1 to 11 The fixed base 6 shown is provided with a receiving groove 63 on the side near the rocker support 71. There are multiple receiving grooves 63, which are spaced apart along the circumference of the fixed base 6. The sliding mechanism includes a sliding ball 81 corresponding to the receiving groove 63 and a sliding groove 82 provided on the side of the rocker support 71 near the fixed base 6 and extending along the circumference of the rocker support 71. The sliding ball 81 slides in cooperation with the sliding groove 82 to support the rocker support 71 to rotate relative to the fixed base 6 in a horizontal circumferential direction.

[0069] Furthermore, the sliding engagement between the sliding ball 81 and the groove 82 can significantly reduce the friction between the rocker support 71 and the fixed base 6, making the rocking motion smoother, reducing energy loss, and improving the operating efficiency of the rocker mechanism. Secondly, the low-friction design helps reduce wear between mechanical parts, effectively extending the service life of the sliding mechanism, thereby reducing maintenance costs.

[0070] Furthermore, the sliding ball 81 slides within the groove 82, ensuring that the rocker support 71 swings smoothly and precisely along the horizontal circumference, which helps to avoid noise and shaking caused by mechanical vibration or irregular movement.

[0071] Furthermore, the multiple accommodating grooves 63 and sliding balls 81 arranged at intervals along the circumference help to evenly distribute the weight of components such as the sway support 71 and the fan housing 1, avoiding structural deformation caused by excessive force on a single point. Even if the fan swings for a long time, it can maintain stable support and prevent tipping.

[0072] like Figures 1 to 11A swing gap is provided between the fixed base 6 and the fan housing 1, allowing the fan housing 1 to swing relative to the fixed base 6;

[0073] Furthermore, the swing gap can prevent the fan housing 1 from making hard contact or friction with the fixed base 6 during the left and right swinging process, and reserve sufficient space for the reciprocating motion of components such as the fan housing 1 and the swing support 71, which helps to ensure smooth swinging motion without jamming.

[0074] Furthermore, the oscillation gap can disperse the mechanical stress generated during the oscillation process, reduce component damage caused by stress concentration, and thus improve the durability of the entire oscillation mechanism. Secondly, by setting the oscillation gap, it is beneficial to ensure that the fan maintains overall stability during the oscillation process, which helps to reduce the risk of shaking or tipping due to excessive oscillation amplitude.

[0075] The implementation method of Example 1 is as follows:

[0076] A tower fan includes a fan body, which includes a fan housing 1, a drive motor 2, and a cross-flow impeller 3. The drive motor 2 and the cross-flow impeller 3 are both disposed inside the fan housing 1. The drive motor 2 drives the cross-flow impeller 3 to rotate to generate airflow. An air supply channel 30 is formed between the cross-flow impeller 3 and the inner side wall of the fan housing 1. The fan housing 1 is provided with a grille outlet 11 that communicates with the air supply channel 30. The flow section of the air supply channel 30 is inclined in the vertical direction to reduce airflow noise.

[0077] This invention forms an air supply channel between the cross-flow impeller and the inner wall of the fan housing. The fan housing has a grille outlet that communicates with the air supply channel. The flow section of the air supply channel is inclined in the vertical direction so that the airflow can flow smoothly along the inner wall of the fan housing after being output from the cross-flow impeller. This avoids the airflow hitting the inner wall of the fan housing at a right angle, which helps to reduce vortices caused by sharp turns in the airflow. This effectively solves the problem of existing tower fans that generate airflow by driving the cross-flow impeller to rotate through a drive motor. However, the fan housing and the cross-flow impeller are arranged parallel in the vertical direction, so that the generated airflow is blown out in a horizontal direction that is approximately perpendicular to the axis of the cross-flow impeller. The angle between the airflow direction and the inner wall of the housing is large, which easily generates vortices at the corners of the air duct or the edge of the grille outlet, resulting in excessive noise when the fan is running.

[0078] The implementation method of Example 2 is as follows:

[0079] Based on Example 1, Example 2 also has the following implementation method: the cross-flow fan wheel 3 is arranged in a vertical direction. The cross-flow fan wheel 3 includes a first end face 31 located at the top and a second end face 32 located at the bottom. The fan housing 1 is inclined and extended from the first end face 31 toward the second end face 32, so that the cross-section of the air supply channel 30 is a trapezoidal shape that gradually narrows from bottom to top.

[0080] The implementation method of Example 3 is as follows:

[0081] Based on Example 1, Example 3 also has the following implementation method: The fan housing 1 includes a front housing 12, and a grille air outlet 11 is disposed on the front housing 12. The inner side wall of the front housing 12 is provided with a guide plate 4 and a cut-off plate 5, which are respectively disposed on opposite sides of the grille air outlet 11.

[0082] The implementation method of Example 4 is as follows:

[0083] Based on Example 3, Example 4 also has the following implementation method: the air guide plate 4 and the air intercepting plate 5 can be detachably set on the inner side wall of the front housing 12.

[0084] The implementation method of Example 5 is as follows:

[0085] Based on Example 1, Example 5 also has the following implementation method: The fan body includes a fixed base 6, and a swing mechanism is provided between the fixed base 6 and the fan housing 1. Under the action of the swing mechanism, the fan housing 1, the drive motor 2 and the cross-flow impeller 3 can all rotate synchronously relative to the fixed base 6 in the horizontal circumferential direction.

[0086] The implementation method of Example 6 is as follows:

[0087] Based on Embodiment 5, Embodiment 6 further includes the following implementation: the swing mechanism includes a swing support 71, which is connected to the fan housing 1 and located above the fixed base 6. The drive motor 2 is mounted on the swing support 71, and a sliding mechanism is provided between the swing support 71 and the fixed base 6.

[0088] The implementation method of Example 7 is as follows:

[0089] Based on Embodiment 6, Embodiment 7 further includes the following implementation: The fixed base 6 has an installation cavity 61, and the swing mechanism includes a swing motor 72 disposed in the installation cavity 61, a swing member 73 that is connected to the output end of the swing motor 72, and a swing connecting rod 74. The swing support 71 has a swing connecting part 711 that extends toward the fixed base 6. One side of the swing connecting rod 74 is hinged to the swing connecting part 711, and the other side of the swing connecting rod 74 is hinged to the swing member 73.

[0090] The implementation method of Example 8 is as follows:

[0091] Based on Embodiment 6, Embodiment 8 further includes the following implementation: The rocking mechanism includes a rocking motor 72 disposed on the rocking support 71, a rocking member 73 that is connected to the output end of the rocking motor 72, and a rocking connecting rod 74. The output end of the rocking motor 72 is disposed toward the fixed base 6. The fixed base 6 is provided with a rocking extension 62 extending toward the rocking support 71. One side of the rocking connecting rod 74 is hinged to the rocking extension 62, and the other side of the rocking connecting rod 74 is hinged to the rocking member 73.

[0092] The implementation method of Example 9 is as follows:

[0093] Based on Embodiment 6, Embodiment 9 further includes the following implementation: A receiving groove 63 is provided on the side of the fixed base 6 near the rocker support 71. Multiple receiving grooves 63 are provided and spaced apart along the circumferential direction of the fixed base 6. The sliding mechanism includes sliding balls 81 corresponding to the receiving grooves 63 and a sliding groove 82 provided on the side of the rocker support 71 near the fixed base 6 and extending along the circumferential direction of the rocker support 71. The sliding balls 81 and the sliding groove 82 slide in cooperation to support the rocker support 71 to rotate relative to the fixed base 6 in the horizontal circumferential direction.

[0094] The implementation method of Example 10 is as follows:

[0095] Based on Example 5, Example 10 also has the following implementation method: a swing gap is provided between the fixed base 6 and the fan housing 1 to allow the fan housing 1 to swing relative to the fixed base 6.

[0096] The implementation method of Example 11 is as follows:

[0097] The difference between Embodiment 11 and Embodiment 9 is that the sliding mechanism includes a slide rail disposed on the fixed base 6 and a slider disposed at the bottom of the rocker support 71. The slide rail extends along the direction of the rocker support 71 swinging relative to the fixed base 6. Limiting parts are provided at both ends of the slide rail to limit the swing range. The limiting parts can be limiting protrusions. The slide rail and the slider slide together to realize the swing of the rocker support 71 relative to the fixed base 6.

[0098] The implementation method of Example Twelve is as follows:

[0099] The difference between Embodiment Twelve and Embodiment Nine is that the sliding mechanism includes a sliding groove disposed on the fixed base 6 and a sliding bearing disposed at the bottom of the rocker support 71. The sliding groove extends along the direction of the rocker support 71 swinging relative to the fixed base 6. Limiting parts are provided at both ends of the sliding groove to limit the swing range. The sliding bearing can slide freely in the sliding groove, thereby realizing the swing of the rocker support 71 relative to the fixed base 6.

[0100] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A tower fan, comprising a fan body, characterized in that: The fan body includes a fan housing (1), a drive motor (2) and a cross-flow impeller (3). The drive motor (2) and the cross-flow impeller (3) are both located inside the fan housing (1). The drive motor (2) drives the cross-flow impeller (3) to rotate to generate airflow. An air supply channel (30) is formed between the cross-flow impeller (3) and the inner wall of the fan housing (1). The fan housing (1) is provided with a grille outlet (11) that communicates with the air supply channel (30). The flow section of the air supply channel (30) is inclined in the vertical direction to reduce airflow noise.

2. A tower fan according to claim 1, characterized in that: The cross-flow fan (3) is arranged in a vertical direction. The cross-flow fan (3) includes a first end face (31) at the top and a second end face (32) at the bottom. The fan housing (1) extends obliquely from the first end face (31) toward the second end face (32), so that the cross-section of the air supply channel (30) is a trapezoidal shape that gradually narrows from bottom to top.

3. A tower fan according to claim 1, characterized in that: The fan housing (1) includes a front housing (12), the grille outlet (11) is disposed on the front housing (12), and the inner sidewall of the front housing (12) is provided with a guide plate (4) and a cut-off plate (5), the guide plate (4) and the cut-off plate (5) are respectively disposed on opposite sides of the grille outlet (11).

4. A tower fan according to claim 3, characterized in that: Both the air guide plate (4) and the air interceptor plate (5) are detachably mounted on the inner wall of the front housing (12).

5. A tower fan according to claim 1, characterized in that: The fan body includes a fixed base (6), and a swing mechanism is provided between the fixed base (6) and the fan housing (1). Under the action of the swing mechanism, the fan housing (1), the drive motor (2) and the cross-flow impeller (3) can all rotate synchronously relative to the fixed base (6) in the horizontal circumferential direction.

6. A tower fan according to claim 5, characterized in that: The swing mechanism includes a swing support (71), which is connected to the fan housing (1) and located above the fixed base (6). The drive motor (2) is mounted on the swing support (71), and a sliding mechanism is provided between the swing support (71) and the fixed base (6).

7. A tower fan according to claim 6, characterized in that: The fixed base (6) has an installation cavity (61). The rocking mechanism includes a rocking motor (72) disposed in the installation cavity (61), a rocking component (73) that is connected to the output end of the rocking motor (72) in a transmission manner, and a rocking connecting rod (74). The rocking support (71) has a rocking connecting part (711) that extends toward the fixed base (6). One side of the rocking connecting rod (74) is hinged to the rocking connecting part (711), and the other side of the rocking connecting rod (74) is hinged to the rocking component (73).

8. A tower fan according to claim 6, characterized in that: The rocking mechanism includes a rocking motor (72) disposed on the rocking support (71), a rocking member (73) connected to the output end of the rocking motor (72) in a transmission manner, and a rocking connecting rod (74). The output end of the rocking motor (72) is disposed in the direction of the fixed base (6). The fixed base (6) is provided with a rocking extension (62) extending in the direction of the rocking support (71). One side of the rocking connecting rod (74) is hinged to the rocking extension (62), and the other side of the rocking connecting rod (74) is hinged to the rocking member (73).

9. A tower fan according to claim 6, characterized in that: The fixed base (6) is provided with a receiving groove (63) on the side near the rocker support (71). There are multiple receiving grooves (63), which are spaced apart along the circumferential direction of the fixed base (6). The sliding mechanism includes a sliding ball (81) corresponding to the receiving groove (63) and a sliding groove (82) provided on the side of the rocker support (71) near the fixed base (6) and extending along the circumferential direction of the rocker support (71). The sliding ball (81) and the sliding groove (82) slide in cooperation to support the rocker support (71) to rotate relative to the fixed base (6) in the horizontal circumferential direction.

10. A tower fan according to claim 5, characterized in that: A swing gap is provided between the fixed base (6) and the fan housing (1) to allow the fan housing (1) to swing relative to the fixed base (6).

Images