CN220816007U - Tower type fan - Google Patents

Abstract

The utility model discloses a tower fan, which comprises a shell, a through-flow wind wheel set and a control module, wherein the through-flow wind wheel set is arranged in the shell and is electrically connected with the control module, an air inlet and an air outlet are arranged on the shell, and an air guide channel which is communicated with the air inlet to the air outlet is formed between the through-flow wind wheel set and the inner wall of the shell; further comprises: the air guide device comprises a guide plate arranged in the air guide channel and a driving mechanism for driving the guide plate to move and adjusting the opening and closing degree of the air guide channel. According to the utility model, the movable guide plate is arranged in the air guide channel of the tower fan, and the opening and closing degree of the air guide channel can be adjusted by controlling the movable guide plate to move in a certain range, so that the power of the tower fan is further changed under any gear, the wind speed of the fan is improved and reduced, the functional diversity of the direct current tower fan is increased, and the user experience is improved.

Description

Tower type fan

Technical Field

The utility model relates to the related technical field of air or air flow regulating appliances, in particular to a tower fan.

Background

Tower fans are increasingly accepted and favored by a wide range of users due to their novel appearance and smaller footprint. The working principle of the tower fan is as follows: wind pressure is generated by rotation of the cross flow wind wheel set, centrifugal wind power is generated, and finally the wind power is transmitted out through the internal wind guide channel. Because the through-flow wind wheel group is in a cylindrical shape which is vertically arranged; thus, a three-dimensional airflow wall, or so-called air curtain, is obtained using a tower fan, which is perpendicular to the ground, and which is blown by swinging the air outlet grill from side to side.

When the air conditioner is started in a room, the air flow and the air temperature in the room can be balanced by using a smaller gear of the tower fan in cooperation with the air conditioner. The tower fan with multiple gears generally adopts a direct current motor to drive the cross flow wind wheel, and more gears are arranged, so that a user can select and use the tower fan.

Currently, the gear positions of the commercial direct current tower fan are set to be eight, ten or even twelve, but the power and the wind speed of each gear position are fixed. Along with the demand of users on wind sensation becoming finer and finer, if more gears are added, the electric control design difficulty for the through-flow wind turbine set is greatly increased, and the control stability is greatly reduced. Therefore, to achieve finer wind sense adjustment, consideration is only given to other control links.

Disclosure of utility model

The utility model aims to provide a tower fan, which can adjust the air supply power and the air speed under each gear of the tower fan. The utility model is realized by the following technical scheme:

The tower fan comprises a shell, a cross-flow wind wheel set and a control module, wherein the cross-flow wind wheel set is arranged in the shell and is electrically connected with the control module, an air inlet and an air outlet are formed in the shell, and an air guide channel which is communicated with the air inlet to the air outlet is formed between the cross-flow wind wheel set and the inner wall of the shell; characterized by further comprising: the air guide device comprises a guide plate arranged in the air guide channel and a driving mechanism for driving the guide plate to move and adjusting the opening and closing degree of the air guide channel.

Preferably, the shell comprises a front shell and a rear shell which are in front-back involution, and the control module is arranged on the outer surface of the shell.

Preferably, the cross-flow wind wheel set comprises a cross-flow wind wheel and a wind wheel motor, a motor assembly seat is arranged at the bottom in the shell, the wind wheel motor is fixedly arranged on the motor assembly seat and electrically connected with the control module, and the cross-flow wind wheel is in driving connection with the wind wheel motor and is arranged above the wind wheel motor.

Preferably, the guide plate is vertically arranged and comprises an assembling side close to one side of the air inlet and a swinging side close to one side of the air outlet; the upper and lower two of assembly side are provided with the pivot respectively, the guide plate through two the pivot can swing set up in the wind-guiding passageway.

Preferably, the assembly side of the guide plate is attached to the inner wall of the housing, and the two rotating shafts are respectively rotatably arranged on the bearing piece of the inner wall of the housing.

Preferably, the guide plate is arc-shaped and is adapted to the radian of the inner wall of the shell.

Preferably, the driving mechanism drives the guide plate to be positioned between a swing starting point and a swing ending point; when the guide plate is positioned at the swing starting point, the arc circle center of the guide plate coincides with the circle center of the cross flow wind wheel.

Preferably, the driving mechanism is an electric driving mechanism and comprises a stepping motor in driving connection with the rotating shaft, and the stepping motor is connected with the control module.

Preferably, the driving mechanism is a manual driving mechanism, and comprises a knob in driving connection with the rotating shaft, and the knob is arranged outside the shell.

Preferably, an air inlet grid is arranged at the air inlet, and an air outlet grid is arranged at the air outlet; and a material bin for storing humidified materials or heat exchange materials is arranged below the corresponding air inlet in the shell.

The utility model has the beneficial effects that:

A movable guide plate is arranged in the wind guide channel of the tower fan, the opening and closing degree of the wind guide channel can be adjusted by controlling the movable guide plate to move in a certain range, so that the power of the tower fan can be further changed under any gear, the wind speed of the fan is improved and reduced, the functional diversity of the direct-current tower fan is increased, and the user experience is improved. Specifically, when the cross flow wind wheel in the tower fan rotates, and when the air guide plate reduces the air guide channel, part of air flow acts on the cross flow wind wheel to push the cross flow wind wheel to operate, the resistance to be overcome by the wind wheel motor is reduced, the power is reduced, the rest part of air flow is blown out along the air outlet, and the air quantity and the air speed at the moment are also reduced relatively, so that the air of the fan is softer, and the fan is more energy-saving.

Drawings

Fig. 1 is an exploded perspective view of a tower fan according to an embodiment of the present utility model.

Fig. 2 is a perspective view of a baffle and a casing (rear casing) before assembly in a tower fan according to an embodiment of the present utility model.

Fig. 3 is a perspective view of a baffle and a casing (rear casing) in a tower fan according to an embodiment of the present utility model.

Fig. 4 is a perspective view of a tower fan according to an embodiment of the present utility model before a through-flow impeller assembly is assembled with a housing (rear housing).

Fig. 5 is a perspective view of a baffle and a through-flow impeller assembly of a tower fan according to an embodiment of the present utility model before assembly with a housing (rear housing).

Fig. 6 is a schematic diagram of a baffle located at a swing start point in an air guide channel in a tower fan according to an embodiment of the present utility model.

Fig. 7 is a schematic diagram of a baffle located at a swing end point in an air guide channel in a tower fan according to an embodiment of the present utility model.

Fig. 8 is a schematic diagram of a swing stroke of a baffle in a wind guiding channel in a tower fan according to an embodiment of the present utility model.

Reference numerals illustrate: 100-tower fans, 10-shells, 101-air guide channels, 11-front shells, 111-air outlets, 12-rear shells, 121-air inlets, 125-bottom plates, 126-motor assembly seats, 129-material bins, 13-air outlet grids, 14-air inlet grids, 19-bearing parts, 20-through-flow wind wheel sets, 21-wind wheel motors, 22-through-flow wind wheels, 30-guide plates, 31-assembly sides, 32-swing sides, 33-rotating shafts, 40-driving mechanisms and 50-control modules.

Detailed Description

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships are based on the orientations or relative positional relationships shown in the drawings, are intended to facilitate a clear description of the construction of the product or device, and are not intended to limit the actual orientation of the product or device during production, use, sales, etc.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," "disposed," "secured," and the like are to be construed broadly and may be, for example, fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1, a tower fan 100 according to the present embodiment includes a housing 10, a through-flow impeller assembly 20, a baffle 30, a driving mechanism 40, and a control module 50, and the specific construction and the matching relationship of the above components are described below.

With continued reference to fig. 1, the housing 10 includes a front shell 11 and a rear shell 12 that are folded back and forth, an air inlet 121 is provided on the rear shell 12, and an air outlet 111 is provided on the front shell 11; an air inlet grid 14 is arranged at the air inlet 121, an air outlet grid 13 is arranged at the air outlet 111, and the air outlet grid 13 is a grid for manually or automatically adjusting the wind direction.

The control module 50 is disposed on the outer surface of the housing 10 to facilitate user operation. As a specific embodiment, the control module 50 is disposed on the top end of the housing 10 as a top cover of the housing 10; of course, the front shell 11 and the rear shell 12 may form a top cover of the shell itself when they are combined; in addition, the control module 50 may be provided on the front case 11. The control module 50 may be an electronic control module based on modes of a touch panel, control keys (knobs), etc.

The through-flow wind wheel set 20 is disposed in the casing 10, an air guiding channel 101 (shown in fig. 6) is formed between the through-flow wind wheel set 20 and the inner wall of the casing 10 and is communicated with the air inlet 121 to the air outlet 111, the through-flow wind wheel set 20 rotates under the control of the control module 50, wind pressure is generated, centrifugal wind force is generated, and finally the wind force is transmitted from the air outlet 111 through the air guiding channel 101. The control module 50 controls the opening and closing of the through-flow impeller assembly 20 and operates in a plurality of different power (rotational speed) gears in response to a user's operation command to a touch panel or control button (knob).

Referring to fig. 1 and 4, a motor assembly seat 126 is provided at the bottom in the case 10, specifically, a bottom plate 125 is provided at the bottom of the rear case 12, the bottom plate 125 is used as the bottom plate of the case 10, and the motor assembly seat 126 is fixedly provided on the bottom plate 125. The cross flow wind wheel set 20 comprises a wind wheel motor 21 and a cross flow wind wheel 22, wherein the wind wheel motor 21 is fixedly arranged on a motor assembly seat 126 and electrically connected with the control module 50, and the cross flow wind wheel 22 is in driving connection with the wind wheel motor 21 and is arranged above the wind wheel motor 21. The wind wheel motor 21 drives the cross-flow wind wheel 22 to operate in a plurality of different power (rotational speed) gear positions under the control of the control module 50.

Based on the tower fan 100 of the above structure, it can realize a plurality of different power (rotation speed) gear operations and adjustment and switching, but in each gear, the power and wind speed cannot be further adjusted or optimized. Therefore, the embodiment realizes further adjustment of power and wind speed in specific gear through the following further technical scheme.

Referring to fig. 2 and 3, the baffle 30 is vertically disposed, and includes an assembling side 31 near the air inlet 121 and a swinging side 32 near the air outlet 111, the upper and lower ends of the assembling side 31 are respectively provided with a rotating shaft 33, and the baffle is swingably disposed in the air guiding channel 101 through the upper and lower rotating shafts 33.

Referring to fig. 6, the assembly side 31 of the deflector is attached to the inner wall of the housing 10, and two rotating shafts 33 are rotatably disposed on the bearing members 19 of the inner wall of the housing 10, respectively. The driving mechanism 40 is in driving connection with the guide plate 30, drives the guide plate 30 to move and adjusts the opening and closing degree of the air guide channel 101. Specifically, the driving mechanism 40 is an electric driving mechanism, and includes a stepper motor in driving connection with the rotating shaft 33 of the deflector 30; the stepper motor is connected with the control module 50, and under the control of the control module 50, the stepper motor drives the deflector 30 to be positioned between a swing start point (see the position shown in fig. 6) and a swing end point (see the position shown in fig. 7) in the air guide channel 101, that is, the deflector 30 is driven by the driving mechanism 40 and can be positioned at least two fixed point positions on the swing stroke (see fig. 8) of the deflector.

More specifically, the inner wall of the casing 10 between the air inlet 121 and the air outlet 111 is arc-shaped, and the deflector 30 is arc-shaped to adapt to the radian of the inner wall of the casing 10; moreover, when the deflector 30 is located at the swing starting point (see the position shown in fig. 6), the deflector 30 is attached to the inner wall of the housing 10, and the arc center of the deflector 30 coincides with the center of the through-flow wind wheel 22, so that the airflow can flow inside the air guide channel 101 conveniently, and the shake and noise are reduced.

Alternatively, the driving mechanism 40 may be a manual driving mechanism, including a knob drivingly connected to the rotating shaft 33 of the baffle 30, where the knob is disposed outside the housing 10, and the knob may be directly connected to the rotating shaft 33 of the baffle 30 or indirectly connected to the rotating shaft 33 of the baffle 30 through a gear set or other transmission mechanism. In addition, as shown in fig. 5, a material bin 129 for storing humidified materials or heat exchange materials is provided below the rear case 12 corresponding to the air inlet 121. When water is stored in the material bin 129, the tower fan is added with a humidifying function when supplying air; when ice bags are stored in the material bin 129, the tower fan is added with a refrigerating function when supplying air.

One specific operation mode and operation principle of the tower fan 100 are described as follows:

When a user selects a certain power gear on the control module 50, the wind wheel motor 21 works according to the gear; the deflector 30 is initially located at the starting point of the swing (see the position shown in fig. 6), and the arc center coincides with the center of the through-flow wind wheel 22, so that the air flow can be guided well.

When a user presses a speed regulation button on the control module 50 for a long time, the stepping motor of the driving mechanism 40 drives the guide plate 30 to swing and leave the swing starting point, the swing side 32 of the guide plate 30 approaches the cross-flow wind wheel 22, and the excircle of the cross-flow wind wheel 22 and the guide plate 30 are not concentric; during the swinging process of the deflector 30, the user can release the speed adjusting button at any time according to the sensed proper wind speed, and at the moment, the stepping motor of the driving mechanism 40 stops working, and the deflector 30 also stops swinging relatively. In order to prevent interference or too little air flow caused by too close of the swing side 32 of the baffle 30 to the cross-flow wind wheel 22, the program of the control module 50 controls the stroke of the stepper motor of the driving mechanism 40, and when the baffle swings to the swing end point (see the position shown in fig. 7), the stepper motor will turn back to the zero point, so as to ensure that the baffle 30 swings within the set range.

When the stepper motor of the driving mechanism 40 drives the guide plate 30 to swing and the swinging side 32 of the stepper motor approaches the cross-flow wind wheel 22, the gap between the cross-flow wind wheel 22 and the guide plate 30 is gradually reduced at the position close to the air outlet 111, and the air flow running space between the cross-flow wind wheel 22 and the guide plate 30 is also gradually reduced, so that a part of air flow directly acts on the cross-flow wind wheel 22 to push the cross-flow wind wheel 22 to rotate and a part of air flow is blown out along the front shell 11.

The wind wheel motor 21 is repeatedly corrected by controlling the frequency of the stator rotating magnetic field and feeding the rotating speed of the motor rotor back to the control center through the Hall element until the rotating speed of the motor reaches a set value. When the through-flow wind wheel 22 is driven by the airflow, the load of the wind wheel motor 21 is reduced, and the magnetic field conversion frequency is relatively reduced. The resistance that the wind turbine motor 21 needs to overcome is reduced, resulting in a reduction of the overall power. At the same time, the air flow is subjected to the resistance of the deflector while running in the air guide channel 101, resulting in a relatively reduced speed of the air flow out of the front housing 11.

The present example used a dc tower fan with twelve gear adjustments to test power changes when the baffle was in the position of the start of swing (see position shown in fig. 6) and the end of swing (see position shown in fig. 7), respectively, as specified in table 1 below.

TABLE 1

As can be seen from table 1 above, the power of the dc tower fan is reduced by 60% at the highest gear. At the highest gear, the wind speed test of the deflector at the swing start point (see the position shown in fig. 6) was 6.67m/s, and at the highest gear, the wind speed test of the deflector at the swing end point (see the position shown in fig. 7) was 4.45m/s. Simultaneously, the rotation speeds of the wind wheel motor 21 driving the cross flow wind wheel 22 under the two states are tested to be consistent. When the user presses the speed adjusting button, taking 12 steps as an example, the user can gradually reduce the power of the direct current tower fan from 20.3W to 8.3W, and can select any power to stop in the middle.

The above embodiments are merely for fully disclosing the present utility model, but not limiting the present utility model, and should be considered as the scope of the present disclosure based on the substitution of equivalent technical features of the inventive subject matter without creative work.

Claims (10)

1. The tower fan comprises a shell, a cross-flow wind wheel set and a control module, wherein the cross-flow wind wheel set is arranged in the shell and is electrically connected with the control module, an air inlet and an air outlet are formed in the shell, and an air guide channel which is communicated with the air inlet to the air outlet is formed between the cross-flow wind wheel set and the inner wall of the shell; characterized by further comprising: the air guide device comprises a guide plate arranged in the air guide channel and a driving mechanism for driving the guide plate to move and adjusting the opening and closing degree of the air guide channel.

2. The tower fan of claim 1, wherein the housing includes front and rear shells that are aligned front and rear, and the control module is disposed on an outer surface of the housing.

3. The tower fan according to claim 1, wherein the cross-flow wind wheel set comprises a cross-flow wind wheel and a wind wheel motor, a motor assembly seat is arranged at the bottom in the shell, the wind wheel motor is fixedly arranged on the motor assembly seat and electrically connected with the control module, and the cross-flow wind wheel is in driving connection with the wind wheel motor and is arranged above the wind wheel motor.

4. The tower fan of claim 1, wherein the baffle is vertically disposed and includes an assembly side adjacent to the air inlet and a swing side adjacent to the air outlet; the upper and lower two of assembly side are provided with the pivot respectively, the guide plate through two the pivot can swing set up in the wind-guiding passageway.

5. The tower fan of claim 4, wherein the assembly side of the baffle is attached to the inner wall of the housing, and the two shafts are rotatably disposed on bearing members of the inner wall of the housing, respectively.

6. The tower fan of claim 5, wherein the baffle is arcuate to conform to the curvature of the inner wall of the housing.

7. The tower fan of claim 6, wherein the drive mechanism drives the deflector to be positioned between a swing start point and a swing end point; when the guide plate is positioned at the swing starting point, the arc circle center of the guide plate coincides with the circle center of the cross flow wind wheel.

8. A tower fan according to any one of claims 4 to 7, wherein the drive mechanism is an electric drive mechanism comprising a stepper motor drivingly connected to the shaft, the stepper motor being connected to the control module.

9. The tower fan of any of claims 4 to 7, wherein the drive mechanism is a manual drive mechanism comprising a knob drivingly connected to the shaft, the knob being disposed outside the housing.

10. The tower fan of claim 1, wherein an air inlet grid is provided at the air inlet, and an air outlet grid is provided at the air outlet; and a material bin for storing humidified materials or heat exchange materials is arranged in the shell and below the air inlet.