JP3228004U - Air circulation device, air purifier, air humidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air circulation device, an air purifier and an air humidifier having a 360 ° circulation fan, which simplifies the overall structure and reduces the manufacturing cost. SOLUTION: A support base 100, a fan 200, a centrifugal wind turbine 300, a volute case 400, and a drive mechanism 500 are provided, and a wind hole 101 is provided in the support base so that the volute case can rotate with the support base. A through hole that is connected and communicates with the air hole is provided on the side close to the support base of the volute case, an air outlet is provided on the side surface of the volute case, a mounting portion 102 is provided in the air hole, and the inside of the mounting portion and the air hole. A plurality of connecting ribs 103 are connected to the wall, the fan is fixed to the mounting part, the spindle of the fan extends into the volute case through the through hole, and the centrifugal wind turbine is fixedly connected to the spindle of the fan. The centrifugal wind turbine is located inside the volute case, and the drive mechanism rotates the volute case. The fan is stationary while the volute case rotates, so the wires do not get entangled. [Selection diagram] Fig. 1

Description

The present invention relates to the field of home appliances, particularly to air circulation devices and air purifiers.

The air circulation device is for flowing air to uniformly mix the air in the surrounding environment and making the temperature of the air the same, like an air circulation fan in an air conditioning chamber. The effect of heat dissipation and temperature reduction is also achieved by blowing out the air flow that flows to the human body and other objects like a fan. It can also be used to dry surrounding objects and the ground at high speed, such as an air dryer and a ground air dryer.

Current air circulation fans are mainly classified into two types, one is a fixed type that always blows wind toward a predetermined position, and the other is a swing type that normally swings left and right. The fixed type and swing type have a limited range of air flow. For example, in public places such as complex offices, department stores, or waiting rooms, it is not possible to blow a wide range of wind, and in order to allow the airflow to cover the entire space, multiple fans are used to cover the entire room. It is necessary to circulate the air in the space. To solve the problem of small air flow range, 360 ° circulation fans are also gradually used in daily life and work. However, in the conventional 360 ° circulation fan, the motor and the head are rotated together by power, and the motor needs to be electrically connected by a wire, so that the problem of wire wrapping is avoided when the motor rotates. To do so, it is now common to use rotary electrical connectors to be electrically connected. For this reason, the cost of the circulation fan is high, the structure is complicated, the rotating joint is worn, the entire service life is shortened, and the contact friction type energization is adopted, so that the rotating mechanism has a contact resistance. It increases, leading to increased temperature and increased energy consumption.

The purpose of the present invention is to provide an air circulation device that solves the problems that the conventional 360 ° circulation fan has a complicated structure and high cost in order to realize 360 ° rotation, and the problems of shortening the service life and increasing energy consumption. To provide.

In order to achieve the above object, the air circulation device provided in the embodiment of the present invention includes a support base, a fan, a centrifugal wind turbine, a volute case, and a drive mechanism, and the support base has a wind hole. Is provided, the volute case is rotatably connected to the support base, a through hole communicating with the air hole is provided on the side of the volute case close to the support base, and an air outlet is provided on the side surface of the volute case. A mounting portion is provided in the air hole, a plurality of connecting ribs are connected between the mounting portion and the inner side wall of the air hole, the fan is fixed to the mounting portion, and a spindle of the fan is provided. Extends into the volute case through the through hole, the centrifugal windmill is fixedly connected to the spindle of the fan, the centrifugal windmill is located in the volute case, and the drive mechanism connects the volute case. Connected to rotate.

Further, the top of the support base has a first connecting sleeve extending upward along the edge of the air hole, and the bottom of the volute case has a second connecting sleeve downward along the edge of the through hole. Is rotatably mounted on the second connecting sleeve, or the second connecting sleeve is rotatably mounted on the first connecting sleeve.

Further, a rotary wear resistant sleeve or bearing is further provided between the first connecting sleeve and the second connecting sleeve.

Further, a housing is further provided on the support base, the volute case is housed in the cavity of the housing, and a plurality of ventilation holes are distributed on the side wall of the housing.

Further, the top end of the housing has an extending portion extending downward, and the top end of the volute case has a connecting portion rotatably connected to the extending portion extending upward.

Further, the second connecting sleeve is rotatably mounted on the outer ring of the first connecting sleeve, and the drive mechanism includes a first gear provided on the outer ring of the second connecting sleeve and the said. The first gear includes a first drive motor provided on a support base and a second gear provided on the spindle of the first drive motor and meshing with the first gear. It is mounted on a second connecting sleeve, or the first gear is integrally molded with the second connecting sleeve.

Further, the connection portion is rotatably mounted on the outer ring of the extension portion, and the drive mechanism is provided on the second drive motor provided at the top end inside the housing and the outer ring of the connection portion. A third gear is included, and a fourth gear provided on the spindle of the second drive motor and meshes with the third gear.

Further, an adapter portion extends downward along the edge of the air hole at the bottom of the support base, and an adapter sleeve extending upward along the through hole is provided at the top of the volute case. The adapter section is rotatably connected to the adapter sleeve.

Further, the casing and the base are further included, the upper end of the casing is covered with the bottom end of the support base, the casing is supported by the base, and a plurality of ventilation holes are distributed on the side walls of the casing. A support portion extends upward to the top end of the base, and a support sleeve rotatably connected to the support portion extends downward to the bottom of the volute case.

Further, the adapter sleeve is rotatably mounted on the ring of the adapter portion, and the drive mechanism includes a fifth gear provided on the outer ring of the adapter sleeve and a third gear provided on the support base. A drive motor and a sixth gear provided on the spindle of the third drive motor are included, and the sixth gear meshes with the fifth gear.

Further, the support sleeve is rotatably mounted on the support portion, and the drive mechanism includes a seventh gear provided on the outer ring of the support sleeve and a fourth drive motor provided on the base. Includes an eighth gear that is provided on the spindle of the fourth drive motor and meshes with the seventh gear.

An air purifier, comprising the air circulation device, further comprising a filter element and a bottom case, the filter element is provided in the bottom case, and the support is provided at the upper end of the bottom case. The bottom surface of the support base is in close contact with the top of the filter element, the air hole communicates with the inner hole of the filter element, and the bottom of the bottom case is provided with a close contact portion in close contact with the bottom of the filter element. A plurality of intake ports are distributed on the side wall of the bottom case.

An air purifier comprising the air circulation device and a filter element, the filter element is provided on the support base, the bottom of the filter element covers the upper end of the air hole, and the edge of the support base. The portion extends upward to form a cylinder, the filter element is housed in the cavity of the cylinder, each side wall of the cylinder has a plurality of intake ports, and a sealing lid is provided on the top of the cylinder. The sealing lid is used to seal the openings in the filter element.

Further, a support case is further provided at the bottom of the support base, the fan and the volute case are housed in the support case, and a plurality of outlets are distributed on the side walls of the support case.

An air humidifier, comprising the air circulation device, further comprising an atomizing device, the support base being provided at the upper end of an air outflow hole of the atomizing device.

The one or more technical solutions in the air circulation apparatus provided in the examples of the present invention have at least the following technical effects.

1. Due to the high-speed rotation of the fan of the centrifugal wind turbine, the blades of the centrifugal wind turbine bounce the air inside the volute case from the air outlet of the volute case, and the outside air enters the volute case through the air holes. The air inside is constantly blown out to realize air circulation, and the wind blown out from the air outlet realizes heat dissipation cooling and air circulation throughout the room. The drive mechanism rotates the volute case to achieve 360 ° rotation, but instead of the conventional 360 ° fan, the fan is always stationary while the volute case rotates, avoiding the problem of wire entanglement. The overall structure is simplified and manufacturing costs are reduced.

2. The centrifugal wind turbine is housed in the volute case to avoid exposure of the centrifugal wind turbine, and since the air outlet is on the side of the volute case, foreign matter falls inside the volute case and the centrifugal wind turbine rotates at high speed. It is possible to prevent shocking damage to the wind turbine.

In order to more clearly explain the technical solution means in the examples of the present invention, the drawings necessary for explaining the examples or the prior art will be briefly described below, but of course, the drawings in the following description are the present invention. Only a few examples of the above, one of ordinary skill in the art can obtain other drawings based on these drawings without any creative effort.
It is sectional drawing of Example 1 of the air circulation apparatus provided in Example of this invention. It is an exploded view of the air circulation device 1. It is sectional drawing of Example 2 of the air circulation apparatus provided in Example of this invention. It is an exploded view of the inside of Example 2 of the air circulation apparatus provided in the Example of this invention. It is sectional drawing of one Example of the air purifier provided in the Example of this invention. It is sectional drawing of another Example of the air purifier provided in the Example of this invention.

Hereinafter, examples of the present invention will be described in detail. The examples are shown in the drawings, and the same or similar reference numerals indicate the same or similar elements, or elements having the same or similar functions. Hereinafter, the examples described with reference to the drawings are exemplary and are intended to explain examples of the present invention, and are not intended to be interpreted as limiting the present invention.

In the description of the embodiments of the present invention, "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by terms such as "top", "bottom", "inside", and "outside" is based on the orientation or positional relationship shown in the drawings, and the convenience and description of the description of the embodiment of the present invention. It is for the sake of brevity and does not indicate or suggest that the device or element referred to has a particular orientation or must be configured and operated in a particular orientation. Therefore, it should be understood that it should not be construed as limiting the present invention.

Further, the terms "first" and "second" are used only for explanatory purposes and are understood to indicate or suggest relative importance or to indicate the number of technical features shown. Should not be. Thus, the features that define "first", "second" may include one or more of them, either explicitly or implicitly. In the description of the embodiments of the present invention, "plurality" means two or more unless otherwise specified.

In the embodiments of the present invention, terms such as "mounting", "connecting", "connecting", "fixing" should be understood in a broad sense, unless expressly specified and limited, for example, fixing. Connection, detachable connection, or integrated, mechanical connection, electrical connection, direct connection, or indirectly connected via inclusions. It may be the communication inside the two elements, or the interaction relationship between the two elements. Those skilled in the art can understand the specific meanings of the above terms according to a specific situation.

In one embodiment of the present invention, as shown in FIGS. 1 to 4, the air circulation device 1 includes a support base 100, a fan 200, a centrifugal wind turbine 300, a volute case 400, and a drive mechanism 500. An air hole 101 is provided in the support base 100, the volute case 400 is rotatably connected to the support base 100, and a through hole communicating with the air hole 101 is provided on the side of the volute case 400 close to the support base 100. 401 is provided, and an outlet 402 is provided on the side surface of the volute case 400. A mounting portion 102 is provided in the air hole 101, and a plurality of connecting ribs 103 are connected between the mounting portion 102 and the inner side wall of the air hole 101. The fan 200 is fixed to the mounting portion 102, the spindle of the fan 200 extends into the volute case 400 through the through hole 401, and the centrifugal wind turbine 300 is fixedly connected to the spindle of the fan 200. , The centrifugal wind turbine 300 is located in the volute case 400. The drive mechanism 500 is connected to the volute case 400 so as to rotationally drive the volute case 400. In this embodiment, when the centrifugal wind turbine 300 is driven and rotated, the blades of the centrifugal wind turbine 300 bounce the air inside the volute case 400 from the air outlet 402, and the outside air enters the volute case 400 from the air hole 101. As it enters, the wind is continuously blown out from the outlet 402, air convection is formed, and the surrounding air circulates. At the same time, the blown airflow can be blown onto the human body to have the effect of heat dissipation cooling and can be blown onto the ground or other objects to be used to quickly dry the ground or other objects. You can also do it. The drive mechanism 500 can rotate the volute case 400 to continuously rotate the outlet 402, thus replacing the conventional 360 ° revolver. Since the fan 200 does not move just by rotating the volute case 400, the problem of wiring entanglement is eliminated, the overall structure is simplified, and the manufacturing cost is low. Further, the centrifugal wind turbine 300 is housed in the volute case 400 to avoid exposure of the centrifugal wind turbine 300, and since the outlet 402 is on the side surface of the volute case 400, foreign matter falls inside the volute case 400 and the speed is high. It is possible to prevent shocking damage to the rotating centrifugal wind turbine 300.

Referring to FIGS. 1 and 2, as an embodiment of a rotatable connection between the volute case 400 and the support base 100, the top of the support base 100 has a first connection upward along the edge of the air hole 101. The sleeve 110 is extended, the bottom of the volute case 400 is extended downward along the edge of the through hole 401, and the first connection sleeve 110 is the second connection. The sleeve 410 is rotatably mounted, or the second connecting sleeve 410 is rotatably mounted on the first connecting sleeve 110. The rotatable connection between the first connection sleeve 110 and the second connection sleeve 410 provides a rotatable connection between the volute case 400 and the support base 100.

Further, a rotary wear-resistant sleeve or bearing is further provided between the first connection sleeve 110 and the second connection sleeve 410. In this embodiment, by increasing the number of rotary wear resistant sleeves or bearings, the friction between the first connecting sleeve 110 and the second connecting sleeve 410 can be effectively reduced, which is normal for the volute case 400. Operation can be guaranteed and wear can be reduced.

Further, referring to FIGS. 1 and 2, the support base 100 is further provided with a housing 111, the volute case 400 is housed in the cavity of the housing 111, and a plurality of ventilation holes are provided in the side wall of the housing 111. 112 are distributed. This embodiment is mainly used for reducing the temperature of the human body, and specifically, the high-speed airflow bounced from the centrifugal wind turbine 300 is buffered by the housing 111 and then blown onto the human body through the ventilation holes 112. It is possible to avoid the problem that the airflow is directly blown out from the outlet 402 and the wind speed becomes excessive, which causes discomfort to the human body.

In order to improve the stability of the volute case 400 during rotation, in this embodiment, the extension portion 113 extends downward from the top end of the housing 111. Specifically, referring to FIGS. 1 and 2, the top end of the volute case 400 has a connecting portion 411 rotatably connected to the extending portion 113 extending upward. In this embodiment, by restricting the positions of the upper and lower ends of the volute case 400, it is more stable when it is rotated.

Further, in one embodiment in which the drive mechanism 500 drives the rotation of the volute case 400, specifically referring to FIGS. 1 and 2, the second connection sleeve 410 is the first connection sleeve 110. Rotatably mounted on the outer ring, the drive mechanism 500 includes a first gear 501, a first drive motor 502, and a second gear 503, and is rotatably mounted on the outer ring of the second connection sleeve 410. A gear 501 is provided, a first drive motor 502 is provided on the support base 100, and a second gear 503 that meshes with the first gear 501 is provided on the spindle of the first drive motor 502. The first gear 501 is mounted on the second connecting sleeve 410, or the first gear 501 is integrally molded with the outer ring of the second connecting sleeve 410. In this embodiment, the spindle of the first drive motor 502 rotates the second gear 503, and the second gear 503 and the first gear 501 mesh with each other to rotate the volute case 400.

Further, in order to meet the usage needs of consumers, in the first drive motor 502 of this embodiment, the volute case 400 swings in a narrow range when there is little ventilation or when air convection occurs. Since it is a synchronous motor in the case, obstacles may be located on both sides of the volute case 400. If the volute case 400 hits an obstacle while rotating, the synchronous motor can rotate in the opposite direction to have the effect of swinging the volute case 400 left and right, and if necessary, the position between the two obstacles. The deflection angle of the volute case 400 can be adjusted by adjusting the above, and it is possible to meet the usage needs of consumers.

Further, in another embodiment in which the drive mechanism 500 rotates the volute case 400, the drive mechanism 500 includes a second drive motor, a third gear, and a fourth gear. The connection portion 411 is rotatably mounted on the outer ring of the extension portion 113, a second drive motor is provided at the top end inside the housing 111, and a third gear is attached to the outer ring of the connection portion 411. A fourth gear that is provided and meshes with the third gear is provided on the spindle of the second drive motor. Since the present embodiment is the same as the above-mentioned drive system, the corresponding drawings and detailed description will be omitted in order to avoid duplication. Further, the second drive motor is a synchronous motor.

Other embodiments of the rotatable attachment of the volute case 400 and the support base 100 are described in FIGS. 3 and 4, specifically, the bottom of the support base 100 is along the edge of the air hole 101. The adapter portion 120 extends downward, and an adapter sleeve 420 extending upward along the through hole 401 is provided at the top of the volute case 400, and the adapter portion 120 rotates on the adapter sleeve 420. Can be connected. In this embodiment, the adapter sleeve 420 is rotatably connected to the adapter 120 so that the volute case 400 is rotatably connected to the bottom of the support base 100.

Further, referring to FIGS. 3 and 4, the embodiment provided by the present application is described in the air circulation device 1 in order to support the air circulation device 1 on the bottom surface or the table surface and enhance the operational stability of the volute case 400. However, the casing 600 and the base 700 are further included, the upper end of the casing 600 is mounted on the bottom end of the support base 100, the casing 600 is supported by the base 700, and a plurality of sidewalls of the casing 600 are provided. Vents 601 are distributed, a support portion 701 extends upward at the top end of the base 700, and a support sleeve 421 rotatably connected to the support portion 701 extends downward at the bottom of the volute case 400. Is done. In this embodiment, the support base 100 is supported by the casing 600 so that the entire air circulation device 1 can stand on a desk or a floor. In this embodiment, it is possible to avoid the problem that the air flow is buffered by the casing 600, the air flow is directly blown out from the outlet 402, the wind speed becomes excessive, and the human body is uncomfortable.

Further, referring to FIGS. 3 and 4, the drive mechanism 500 is provided on the support base 100 in one embodiment of driving the rotation of the volute case 400. The drive mechanism 500 includes a fifth gear 511, a third drive motor 512, and a sixth gear 513. The adapter sleeve 420 is rotatably mounted on the ring of the adapter section 120, the outer ring of the adapter sleeve 420 is provided with a fifth gear 511, and the support base 100 is provided with a third drive motor 512. Further provided, the spindle of the third drive motor 512 is provided with a sixth gear 513, and the sixth gear 513 meshes with the fifth gear 511. Further, the third drive motor 512 is a synchronous motor.

Further, in another embodiment in which the volute case 400 is rotated by the drive mechanism 500, specifically, the drive mechanism 500 is provided on the base 700, and in a specific embodiment, the support sleeve 421 supports the support. The portion 701 is rotatably provided, a seventh gear is provided on the outer ring of the support sleeve 421, a fourth drive motor is provided on the base 700, and the spindle of the fourth drive motor is provided with the seventh gear. An eighth gear is provided that meshes with the gear of.

An air purifier, referring to FIG. 5, includes a support base 100, a fan 200, a centrifugal wind turbine 300, a volute case 400, a drive mechanism 500, a filter element 800, and a bottom case 900. An air hole 101 is provided in the support base 100, and the volute case 400 is rotatably connected to the support base 100 and communicates with the air hole 101 on the side of the volute case 400 close to the support base 100. A through hole 401 is provided, and an outlet 402 is provided on the side surface of the volute case 400. A mounting portion 102 is provided in the air hole 101, and a plurality of connecting ribs 103 are connected between the mounting portion 102 and the inner side wall of the air hole 101. The fan 200 is fixed to the mounting portion 102, the spindle of the fan 200 extends into the volute case 400 through the through hole 401, and the centrifugal wind turbine 300 is fixedly connected to the spindle of the fan 200. The centrifugal wind turbine 300 is located in the volute case 400, and the drive mechanism 500 is connected to the volute case 400 so as to rotationally drive the volute case 400. The filter element 800 is provided in the bottom case 900, the support base 100 is provided at the upper end of the bottom case 900, the bottom surface of the support base 100 is in close contact with the top of the filter element 800, and the air hole 101 is formed. A close contact portion 901 that communicates with the inner hole of the filter element 800 and is in close contact with the bottom of the filter element 800 is provided at the bottom of the bottom case 900, and a plurality of intake ports 902 are distributed on the side wall of the bottom case 900. To. In this embodiment, when the centrifugal windmill 300 is rotated by the fan 200, a negative pressure is generated inside the volute case 400, so that outside air enters the bottom case 900 from the intake port 902 and is filtered by the filter element 800. After that, it enters the volute case 400, the air purified by the centrifugal wind turbine 300 is bounced up at high speed to perform air circulation purification, and the purified air is blown out to the surroundings by the rotation of the volute case 400 to purify it. Widely covered by the air.

Further, the support base 100 is detachably connected to the bottom case 900, but in this embodiment, the air circulation device 1 can be removed and used alone as a fan, or the air circulation device 1 can be used alone after the removal. Can also be placed on the floor to serve as a quick drying to the floor.

An air purifier, referring to FIG. 6, includes a support base 100, a fan 200, a centrifugal wind turbine 300, a volute case 400, a drive mechanism 500, and a filter element 800. An air hole 101 is provided in the support base 100, and the volute case 400 is rotatably connected to the support base 100 and communicates with the air hole 101 on the side of the volute case 400 close to the support base 100. A through hole 401 is provided, and an outlet 402 is provided on the side surface of the volute case 400. A mounting portion 102 is provided in the air hole 101, and a plurality of connecting ribs 103 are connected between the mounting portion 102 and the inner side wall of the air hole 101. The fan 200 is fixed to the mounting portion 102, the spindle of the fan 200 extends into the volute case 400 through the through hole 401, and the centrifugal wind turbine 300 is fixedly connected to the spindle of the fan 200. The centrifugal wind turbine 300 is located in the volute case 400, and the drive mechanism 500 is connected to the volute case 400 so as to rotationally drive the volute case 400. The filter element 800 is provided on the support base 100, the bottom portion of the filter element 800 covers the upper end of the air hole 101, and the edge portion of the support base 100 extends upward to form a cylinder 130. The element 800 is housed in the cavity of the cylinder 130, has a plurality of intake ports 131 on the side walls of the cylinder 130, and is provided with a sealing lid 132 at the top of the cylinder 130. Is used to seal the openings in the filter element 800. In this embodiment, when the centrifugal wind turbine 300 is rotated by the fan 200, a negative pressure is generated inside the volute case 400, so that the outside air enters the cylinder 130 from the intake port 131 and is filtered by the filter element 800. After that, it enters the volute case 400, the air purified by the centrifugal wind turbine 300 is bounced up at high speed to perform air circulation purification, and the purified air is blown out to the surroundings by the rotation of the volute case 400 to be purified. Widely covered by air. Further, in this embodiment, by blowing the purified air onto the human body, it is possible to make the user breathe the purified air while trying to dissipate heat and cool the human body, and it is possible to achieve multi-functionality. ..

Further, a support case 140 is further provided at the bottom of the support base 100, the fan 200 and the volute case 400 are housed in the support case 140, and a plurality of outlets 141 are provided on the side walls of the support case 140. It is distributed. In this embodiment, the entire humidifier is supported by the support case 140, and the air purified by the inner side wall of the support case 140 is buffered to prevent the air flow from becoming excessive and directly hitting the human body.

An air humidifier, the air circulation device 1 is provided, an atomization device is further provided, and the support base 100 is provided at the upper end of an air outflow hole of the atomization device. In this embodiment, the mist generated in the atomizing device blows water vapor to all four sides of the room by the air circulation device 1 to bring about a humidifying effect on the air.

The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are all protections of the present invention. Should be included within the range.

Claims (15)

A support base, a fan, a centrifugal wind turbine, a volute case, and a drive mechanism are provided, an air hole is provided in the support base, the volute case is rotatably connected to the support base, and the volute case A through hole communicating with the air hole is provided on the side close to the support base, an air outlet is provided on the side surface of the volute case, a mounting portion is provided in the air hole, and the mounting portion and the inner side wall of the air hole are provided. A plurality of connecting ribs are connected to the fan, the fan is fixed to the mounting portion, the spindle of the fan extends into the volute case through the through hole, and the centrifugal wind turbine is the spindle of the fan. An air circulation device fixedly connected to the centrifugal wind turbine, the centrifugal wind turbine is located in the volute case, and the drive mechanism is connected so as to rotate the volute case. The top of the support has a first connecting sleeve extending upward along the edge of the air hole, and the bottom of the volute case has a second connecting sleeve extending downward along the edge of the through hole. The first connecting sleeve is rotatably mounted on the second connecting sleeve, or the second connecting sleeve is rotatably mounted on the first connecting sleeve. The air circulation device according to claim 1. The air circulation device according to claim 2, wherein a rotary wear-resistant sleeve or a bearing is further provided between the first connecting sleeve and the second connecting sleeve. The air circulation device according to claim 2, wherein a housing is further provided on the support base, the volute case is housed in the cavity of the housing, and a plurality of ventilation holes are distributed on the side wall of the housing. .. 4. The top end of the housing has an extending portion extending downward, and the top end of the volute case has a connecting portion rotatably connected to the extending portion extending upward. The air circulation device described in. The second connection sleeve is rotatably mounted on the outer ring of the first connection sleeve, and the drive mechanism includes a first gear provided on the outer ring of the second connection sleeve and the support base. The first gear includes a first drive motor provided in the first drive motor and a second gear provided on the spindle of the first drive motor and meshing with the first gear, and the first gear is the second gear. The air circulation device according to claim 2, wherein the first gear is integrally molded with the second connecting sleeve. The connection portion is rotatably mounted on the outer ring of the extension portion, and the drive mechanism is provided on a second drive motor provided at the top end inside the housing and an outer ring of the connection portion. The air circulation device according to claim 5, further comprising a third gear and a fourth gear provided on the spindle of the second drive motor and meshing with the third gear. An adapter portion extends downward along the edge of the air hole at the bottom of the support base, and an adapter sleeve extending upward along the through hole is provided at the top of the volute case. The air circulation device according to claim 1, wherein the adapter portion is rotatably connected to the adapter sleeve. A casing and a base are further included, the upper end of the casing is mounted on the bottom end of the support base, the casing is supported by the base, and a plurality of ventilation holes are distributed on the side walls of the casing. The air circulation device according to claim 8, wherein a support portion extends upward at the top end of the slab, and a support sleeve rotatably connected to the support portion extends downward at the bottom of the volute case. .. The adapter sleeve is rotatably mounted on the ring of the adapter portion, and the drive mechanism includes a fifth gear provided on the outer ring of the adapter sleeve and a third drive motor provided on the support base. 8. The air circulation according to claim 8, further comprising a sixth gear provided on the spindle of the third drive motor, and the sixth gear meshing with the fifth gear. apparatus. The support sleeve is rotatably mounted on the support portion, and the drive mechanism includes a seventh gear provided on the outer ring of the support sleeve, a fourth drive motor provided on the base, and the drive mechanism. The air circulation device according to claim 9, wherein the air circulation device is provided on the spindle of the fourth drive motor and includes an eighth gear that meshes with the seventh gear. The air circulation device according to any one of claims 1 to 7, a filter element, and a bottom case are provided, the filter element is provided in the bottom case, and the support base is the upper end of the bottom case. The bottom surface of the support base is provided in close contact with the top of the filter element, the air hole communicates with the inner hole of the filter element, and the bottom of the bottom case is provided with a close contact portion in close contact with the bottom of the filter element. An air purifier characterized in that a plurality of intake ports are distributed on the side wall of the bottom case. The air circulation device according to any one of claims 1 and 8 to 11 and a filter element are provided, the filter element is provided on the support base, and the bottom portion of the filter element covers the upper end of the air hole. The edge of the support extends upward to form a cylinder, the filter element is housed in the cavity of the cylinder, the side walls of the cylinder each have a plurality of intake ports, and the top of the cylinder. The air purifier is provided with a sealing lid, and the sealing lid is used to seal an opening in the filter element. A claim is characterized in that a support case is further provided at the bottom of the support base, the fan and the volute case are housed in the support case, and a plurality of air outlets are distributed on the side walls of the support case. Item 13. The air purifier according to item 13. An air humidifier comprising the air circulation device according to any one of claims 1 to 7 and an atomizing device, wherein the support base is provided at the upper end of an outlet hole of the atomizing device. ..