WO2022242044A1

WO2022242044A1 - Intelligent air conditioner wind wheel mechanism, air conditioner and method therefor

Info

Publication number: WO2022242044A1
Application number: PCT/CN2021/128135
Authority: WO
Inventors: 刘京飞; 朱小
Original assignee: 南京蹑波物联网科技有限公司
Priority date: 2021-05-20
Filing date: 2021-11-02
Publication date: 2022-11-24
Also published as: CN113137662A

Abstract

An intelligent air conditioner wind wheel mechanism, an air conditioner and a method therefor, which relate to the technical field of wall-mounted air conditioners. The intelligent air conditioner wind wheel mechanism comprises a shaft rod (1), wherein a plurality of first circular plates (2) are coaxially arranged on the shaft rod (1) at intervals, and a plurality of wind strips (3), which are distributed in a circumferential array manner by means of taking the shaft rod (1) as an axis, are arranged between the first circular plates (2); a plurality of second circular plates (4) are coaxially arranged on the shaft rod (1) in a sliding manner, a second circular plate (4) is distributed between every two adjacent first circular plates (2), and the second circular plate (4) is provided with groove holes allowing the wind strips (3) to penetrate therethrough; each wind strip (3) is sleeved with an annular sleeve gasket (5) in a sliding manner, and one end face of each annular sleeve gasket (5) is fixedly connected to the adjacent second circular plate (4); and a connecting rod is fixedly connected to each second circular plate (4) in a penetrating manner, and the connecting rods penetrate the corresponding first circular plates (2) in a sliding manner. In a relatively short service cycle of the air conditioner, the cleaning of dust can be carried on the wind strips of the wind wheel mechanism without needing to remove the wind wheel mechanism from the interior of an air conditioner housing.

Description

An intelligent air conditioner wind wheel mechanism, air conditioner and method

technical field

The invention relates to the technical field of wall-mounted air conditioners, in particular to an intelligent air conditioner wind wheel mechanism, an air conditioner and a method.

Background technique

Consumers have higher and higher requirements on the indoor environment, especially after the air conditioner is used for a long time, there will be dust accumulation on the outside and inside of the air conditioner, which is easy to breed bacteria and cause high dust content in the indoor air. Therefore, the indoor unit of the air conditioner needs to be cleaned regularly, and the dust on the outside of the air conditioner can be wiped with a rag, but the dust inside the air conditioner is difficult to clean. Generally, the dust inside the air conditioner is concentrated on the wind wheel mechanism and the air guide strip of the air conditioner.

The dust on the wind wheel mechanism cannot be cleaned by the user. Generally, professionals need to disassemble the air conditioner and remove the wind wheel to clean it. After drying, professionals install it inside the air conditioner shell. This cleaning process is too cumbersome for the user. Moreover, it is necessary to pay professional staff, plus the dust accumulation of the wind turbine mechanism will not interrupt the operation of the air conditioner, and a large part of users simply give up the cleaning of the wind turbine mechanism, thereby increasing the dust content of the indoor air and increasing the number of people. potential risk of infection.

technical problem

The object of the present invention is to provide an intelligent air conditioner wind wheel mechanism, air conditioner and method, so as to solve the deficiencies in the above-mentioned prior art.

technical solution

In order to achieve the above object, the present invention provides the following technical solutions: an intelligent air-conditioning wind wheel mechanism, including a shaft, and a plurality of first circular plates are coaxially arranged on the shaft, and between each of the first circular plates There are a plurality of air strips distributed in a circular array with the shaft as the axis; a plurality of second circular plates are coaxially slid on the shaft, and a second circular plate is distributed between two adjacent first circular plates. plate, the second circular plate is provided with a slot hole for the air strip to pass through; each of the air strips is respectively slidably provided with an annular pad, and one end surface of each of the annular pads is connected to the adjacent second The circular plates are fixedly connected; each of the second circular plates is fixedly connected with a connecting rod, and the connecting rod is slidably set through the corresponding first circular plate, and the first end of the connecting rod extends to the edge at the edge an outer side of the first circular plate.

Further, the first end of the connecting rod is provided with an operating part, and the operating part is in the shape of a truncated cone.

An air conditioner, including a shell, a condenser, and a servo motor, and also includes a wind wheel mechanism that is rotatably arranged inside the shell and located under the condenser. The wind wheel mechanism is driven by the servo motor, and the wind wheel mechanism is the right The wind turbine mechanism described in any one of claims 1-2.

Further, it also includes a circular central rod, a bracket, an elastic unit and a support mechanism; a circular through groove is opened on the shaft along the center of the axis, and the central rod slides through the circular through groove, and the center One end of the rod is coaxially connected with the rotating shaft of the servo motor; the bracket is fixedly arranged on the housing, and the end of the central rod close to the servo motor is rotated on the bracket; the elastic unit is arranged between the central rod and the Between the wind wheel mechanisms, the process of recovering the elastic deformation of the elastic unit drives the wind wheel mechanism to slide away from the servo motor; the side of the housing away from the servo motor is provided with a through hole, and the support mechanism is detachably arranged At the through hole of the housing, the support mechanism is engaged with the center rod and the wind wheel mechanism at the same time.

Further, the bracket is L-shaped, the middle part of which is rotatably connected to the central rod, and the two ends are respectively connected to the rear side and the bottom of the casing.

Further, the elastic unit includes a limit ring and a pressure spring, the limit ring is fixedly arranged on the center rod, and is located on one side of the bracket, the pressure spring is sleeved on the center rod, and its two ends are respectively connected to limit Bit ring and wind wheel mechanism.

Further, the support structure includes a cover, a fixing ring, a bearing and a pin, the cover is detachably connected in the through hole of the housing; the fixing ring is fixedly connected to the inner side of the cover, and the bearing The outer ring is embedded inside the fixed ring; the end of the center rod away from the servo motor is provided with a card slot, the end of the shaft rod away from the servo motor is provided with a beveled slot, and the pin is fixedly connected to the inner ring of the bearing On the end face, and at the same time snap fit with the card slot and the oblique slot.

Further, the cover includes a hinged first cover and a second cover, the first cover is clamped with the housing, the second cover is clamped with the housing, and the fixing ring is set inside the second cover.

A cleaning method for an intelligent air conditioner wind wheel mechanism, comprising:

S1: open the first cover;

S2: Hold the operation part and pull it, and drive the movement of each second circular plate and ring pad through the connecting rod, and the ring pad will wipe and absorb the dust on the air strip;

S3: closing the first cover;

S4: Repeat the process of S1-S3 4-6 times, each interval is 20-30 days;

S5: Open the cover and remove the supporting mechanism, at this time the latch is out of engagement with the card slot and the oblique slot;

S6: Slide the wind wheel mechanism out of the casing from the central rod to the through hole of the casing;

S7: Clean the wind wheel mechanism comprehensively, such as cleaning the shaft, the first circular plate, the wind strip, the second circular plate, the ring sleeve pad, the connecting rod and the operating part;

S8: Slidingly install the cleaned and dried wind wheel mechanism on the center pole again, and slide it into the inside of the housing;

S9: Install the support mechanism to the through hole, insert the pin into the card slot and the oblique slot in turn, and engage the cover with the housing.

In the above technical solution, the intelligent air-conditioning wind wheel mechanism provided by the present invention grips and pulls the operation part, drives each second circular plate and the ring pad to move through the connecting rod, and the ring pad wipes the dust on the wind strip The dust is removed and adsorbed, so that the air conditioner can clean the dust on the wind strip of the wind wheel mechanism without disassembling the wind wheel mechanism from the inside of the air conditioner housing in a short service period.

Beneficial effect

Since the above-mentioned wind wheel mechanism has the above-mentioned technical effects, the air conditioner including the wind wheel mechanism should also have corresponding technical effects, and when the wind wheel mechanism has a long service life, it is very convenient to only install the wind wheel mechanism from one side of the housing. Take it out for cleaning, and the wind wheel mechanism can be reinstalled into the air conditioner shell after it is cleaned and dried.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings that are required in the embodiments. Obviously, the accompanying drawings in the following description are only described in the present invention For some embodiments of the present invention, those skilled in the art can also obtain other drawings according to these drawings.

FIG. 1 is a schematic structural diagram of an air conditioner provided by an embodiment of the present invention;

Fig. 2 is a cross-sectional view of the air-conditioning structure along line A-A in Fig. 1 provided by an embodiment of the present invention;

Figure 3 is an enlarged view of the structure at B in Figure 2 provided by an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of the air conditioner when the first cover is opened according to an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of the air conditioner when the cover is opened according to the embodiment of the present invention;

Fig. 6 is a structural schematic diagram of the air conditioner provided by the embodiment of the present invention when the lower wind wheel mechanism is disassembled;

Fig. 7 is a structural front view of the air conditioner provided by the embodiment of the present invention when the lower wind wheel mechanism is disassembled;

Fig. 8 is a schematic structural diagram of a wind turbine mechanism provided by an embodiment of the present invention;

Fig. 9 is a schematic diagram of the connection structure of the shaft rod, the first circular plate and the air strip provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of the connection structure of the second circular plate, the annular sleeve, the connecting rod and the operating part provided by the embodiment of the present invention;

Fig. 11 is a schematic diagram of the connection structure of the central rod, servo motor, bracket and elastic unit provided by the embodiment of the present invention;

Fig. 12 is a schematic diagram of the disassembled structure of the shaft rod, the central rod and the supporting mechanism provided by the embodiment of the present invention.

Explanation of reference signs:

1. Shaft rod; 1.1. Circular through groove; 1.2. Inclined groove; 2. The first circular plate; 3. Air strip; 4. The second circular plate; 5. Ring gasket; 6. Connecting rod; 7. 8. Shell; 8.1. Through hole; 9. Servo motor; 10. Center rod; 10.1. Card slot; 11. Bracket; 12. Elastic unit; 12.1. Limit ring; 12.2. Compression spring; Support mechanism; 13.1, cover body; 13.11, first cover body; 13.12, second cover body; 13.2, fixed ring; 13.3, bearing; 13.31, outer ring; 13.32, inner ring; 13.33, steel ball; 13.4, latch ;

Embodiments of the present invention

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Please refer to Figures 1-12, an intelligent air-conditioning wind wheel mechanism provided by an embodiment of the present invention includes a shaft 1 on which a plurality of first circular plates 2 are arranged coaxially at intervals, and each of the first circular plates 2 There are a plurality of wind strips 3 distributed in a circular array with the shaft 1 as the axis. Specifically, the wind strips 3 are in the shape of strips with a slight arc along the width direction. The shaft 1 rotates and is driven to rotate, driving the first The circular plate 2 and the wind strip 3 rotate around the shaft 1 to generate air flow (wind); the shaft 1 is coaxially slidably provided with a plurality of second circular plates 4, and two adjacent first circular plates 2 A second circular plate 4 is distributed between them, and the second circular plate 4 is provided with a slot hole for the air strip 3 to pass through. Specifically, the center of the second circular plate 4 is provided with a circular hole, and the second circular plate 4 passes through the circular hole. The hole is slidingly sleeved on the shaft rod 1, the diameter of the second circular plate 4 is equal to the diameter of the first circular plate 2, and the air strips 3 pass through the slot holes on the corresponding second circular plate 4; the air strips 3 are respectively The sliding sleeve is provided with an annular sleeve pad 5, one end surface of each annular sleeve pad 5 is fixedly connected with the adjacent second circular plate 4, the shape of the inner ring surface of the ring sleeve pad 5 is adapted to the wind strip 3, and the inner ring surface It is provided with a rough surface, a sponge surface or a cloth surface; each second circular plate 4 is fixedly connected with a connecting rod 6, and the connecting rod 6 is slidingly arranged with the corresponding first circular plate 2, and the first end of the connecting rod 6 extends through To the outside of a first circular plate 2 at the edge, the connecting rod 6 connects the second circular plates 4 to form a whole, and the first end of the moving connecting rod 6 can make each second circular plate 4 on the axis. Slide on the rod 1, so that the second circular plate 4 drives the ring pad 5 on it to wipe and absorb the dust accumulated on the air strip 3.

As a preferred technical solution of this embodiment, an operating portion 7 is provided at the first end of the connecting rod 6 . The operating portion 7 is in the shape of a truncated cone, and the connecting rod 6 can be easily moved through the operating portion 7 .

The intelligent air-conditioning wind wheel mechanism provided by the present invention grasps the operation part 7 and pulls it, drives each second circular plate 4 and the annular sleeve pad 5 to move through the connecting rod 6, and the annular sleeve pad 5 wipes the dust on the wind strip 3 Remove and adsorb, so that the air conditioner can clean the dust on the wind strip 3 of the wind wheel mechanism without disassembling the wind wheel mechanism from the inside of the air conditioner housing 8 in a short service period.

An air conditioner, including a casing 8, a condenser, and a servo motor 9, and also includes a wind wheel mechanism that is rotatably arranged inside the casing 8 and located below the condenser. The wind wheel mechanism is driven by the servo motor 9, and the wind wheel mechanism is right Require any wind turbine mechanism in 1-2.

Further, it also includes a circular central rod 10, a bracket 11, an elastic unit 12, and a support mechanism 13; the shaft 1 is provided with a circular through groove 1.1 along the center of the axis, and the central rod 10 slides through the circular through groove 1.1 Inside, and one end of the center rod 10 is coaxially connected with the rotating shaft of the servo motor 9; the bracket 11 is fixedly arranged on the housing 8, and the end of the center rod 10 close to the servo motor 9 is rotated and arranged on the bracket 11; the elastic unit 12 is arranged in the center Between the rod 10 and the wind wheel mechanism, the elastic unit 12 drives the wind wheel mechanism to slide in a direction away from the servo motor 9 during the process of recovering elastic deformation; the side of the housing 8 away from the servo motor 9 is provided with a through hole 8.1, and the support mechanism 13 can It is detachably arranged at the through hole 8.1 of the casing 8, and the support mechanism 13 is snapped together with the central rod 10 and the wind wheel mechanism at the same time.

In the air conditioner provided by the present invention, when the use period of the wind wheel mechanism is long, only the wind wheel mechanism can be removed from the side of the housing 8 for cleaning very conveniently, and the wind wheel mechanism can be reinstalled into the air conditioner shell after cleaning and drying In the body 8, there is no need to hire additional professionals, and the user can operate it by himself, and the operation is simple and convenient.

As a preferred technical solution of this embodiment, the bracket 11 is L-shaped, the middle part is connected to the central rod 10 in rotation, and the two ends are respectively connected to the rear side and the bottom of the housing 8; The rod 10 is rotatably connected, and the other end is fixedly connected with the housing 8 .

As a preferred technical solution of this embodiment, the elastic unit 12 includes a limit ring 12.1 and a compression spring 12.2, the limit ring 12.1 is fixedly arranged on the center rod 10, and is located on the side of the bracket 11, and the compression spring 12.2 is sleeved on the center rod 10 Above, its two ends are respectively connected to the limit ring 12.1 and the wind wheel mechanism; further, the elastic unit 12 can be only a spring, and the spring is sleeved on the central rod 10. When the wind wheel mechanism is installed inside the air conditioner housing 8, the spring is In the compressed state, its two ends abut against the wind wheel mechanism and the bracket 11 respectively.

As a further preferred technical solution of this embodiment, the support structure includes a cover body 13.1, a fixed ring 13.2, a bearing 13.3 and a pin 13.4, and the cover body 13.1 is detachably connected in the through hole 8.1 of the housing 8; the end face of the fixed ring 13.2 Fixedly connected to the inner side of the cover body 13.1, the outer ring 13.31 of the bearing 13.3 is embedded inside the fixed ring 13.2, that is, the outer ring 13.31 of the bearing 13.3 is fixedly connected with the inner peripheral side of the fixed ring, such as glued, welded, etc.; the center The end of the rod 10 away from the servo motor 9 is provided with a slot 10.1, the slot 10.1 is opened axially from the end face of the central rod 10, and runs through the peripheral side of the central rod 10, and the end of the shaft 1 away from the servo motor 9 is provided with a bevel The slot 1.2 and the pin 13.4 are fixedly connected to the end surface of the inner ring 13.32 of the bearing 13.3, and at the same time, they are engaged with the card slot 10.1 and the oblique slot 1.2. The inner ring 13.32 of the inner ring of the bearing 13.3 is set on the end of the center rod 10, the latch 13.4 slides into the card slot 10.1, and then slides into the oblique groove 1.2, and the center rod 10 and the inner ring 13.32 of the bearing 13.3 are relatively fixed, and at the same time, the shaft rod 1 and the The central rod 10 is relatively fixed, so that when the servo motor 9 drives the central rod 10 to rotate, the central rod 10 can drive the shaft 1 (wind wheel mechanism), the inner ring 13.32 of the bearing 13.3 to rotate synchronously; the support mechanism 13 can also keep the central rod 10 away from the support One end of 11 is supported, and it is more stable when the wind wheel mechanism is rotated.

Further, when the wind wheel mechanism cannot rotate due to a large amount of dust accumulation or damage to the filter screen at the air inlet, hair is sucked in, lint debris is stuck and stuck without debris, etc., the servo motor 9 is energized to work after the air conditioner is started. , but it cannot drive the wind wheel mechanism to rotate, and the servo motor 9 will be damaged or burned in a short period of time, and the latch 13.4 and the oblique groove 1.2 cooperate with the upper elastic unit 12. When the air conditioner is turned on, the wind wheel mechanism cannot rotate. The servo motor 9 provides the rotational force of the shaft 1, and the shaft 1 provides the rotational force of the pin 13.4 and the inner ring 13.32 of the bearing 13.3. At this time, the pin 13.4 with a tendency to rotate pushes the shaft 1 (wind wheel mechanism) against the The direction of the servo motor 9 makes the shaft 1 (wind wheel mechanism) slide in the direction of the servo motor 9, and further compresses the compression spring 12.2, so that the chute is out of engagement with the latch 13.4, so that the latch 13.4 can rotate, that is, the central rod 10 and the servo motor 9 rotating shaft can rotate, so that the servo motor 9 idles, and the servo motor 9 is protected. When the bolt 13.4 rotates with the central rod 10, due to the existence of the chute, the bolt 13.4 is aligned with the chute every turn. , the elastic unit 12 will drive the shaft 1 (wind wheel mechanism) to slide towards the pin 13.4, and make the chute slot re-engage with the pin 13.4, and then separate again, so reciprocating, it will issue "click click..." The sound will remind the user of the failure of the wind turbine mechanism and turn off the air conditioner as soon as possible; the fault can also be judged by the alarm that the air conditioner does not blow out from the air outlet or the detector detects the abnormal rotation of the wind turbine mechanism.

In another embodiment provided by the present invention, the cover body 13.1 includes a hinged first cover body 13.11 and a second cover body 13.12, the first cover body 13.11 is engaged with the housing 8, and the second cover body 13.12 is connected to the housing body 8 Clamping, the fixing ring 13.2 is arranged on the inner side of the second cover 13.12, when cleaning the wind strip 3 through the operation part 7, the connecting rod 6, the second circular plate 4, and the ring pad 5, only need to open the first cover 13.11, Then manually rotate the wind wheel mechanism from the through hole 8.1, so that the operating part 7 is exposed to the through hole 8.1, and the wind strip 3 can be easily cleaned without disassembling the entire support mechanism 13, which improves the convenience of use.

S1: open the first cover 13.11;

S2: Hold the operating part 7 and pull it, and drive the second circular plates 4 and the ring pads 5 to move through the connecting rod 6, and the ring pads 5 will wipe and absorb the dust on the wind strip 3;

S3: close the first cover 13.11;

S4: Repeat the process of S1-S3 4-6 times, each interval is 20-30 days;

S5: Open the cover body 13.1 and remove the support mechanism 13, at this time, the latch 13.4 is disengaged from the card slot 10.1 and the oblique slot 1.2;

S6: Slide the wind wheel mechanism out of the housing 8 from the central rod 10 to the through hole 8.1 of the housing 8;

S7: Clean the wind wheel mechanism comprehensively, such as cleaning the shaft 1, the first circular plate 2, the wind strip 3, the second circular plate 4, the annular sleeve pad 5, the connecting rod 6 and the operating part 7;

S8: Slidingly install the cleaned and dried wind wheel mechanism on the center rod 10 again, and slide it into the inside of the housing 8;

S9: Install the support mechanism 13 to the through hole 8.1, insert the latch 13.4 into the card slot 10.1 and the oblique slot 1.2 in sequence, and engage the cover 13.1 with the housing 8.

Through the above cleaning method, the air conditioner including the wind wheel mechanism can be simply cleaned without dismantling the air strip 3, and the wind wheel mechanism can be fully cleaned by only disassembling the support mechanism 13 and the wind wheel mechanism.

Certain exemplary embodiments of the present invention have been described above only by way of illustration, and it goes without saying that those skilled in the art can use various methods without departing from the spirit and scope of the present invention. The described embodiments are modified. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

An intelligent air-conditioning wind wheel mechanism is characterized in that:

It includes a shaft, on which a plurality of first circular plates are coaxially arranged at intervals, and between each of the first circular plates is provided with a plurality of air strips arranged in a circular array with the shaft as the axis;

A plurality of second circular plates are coaxially slidably arranged on the shaft, and a second circular plate is distributed between two adjacent first circular plates, and a slot for the air strip to pass is opened on the second circular plate hole;

An annular pad is slidingly sleeved on each of the air strips, and one end surface of each of the annular pads is fixedly connected to the adjacent second circular plate;

Each of the second circular plates is fixedly connected with a connecting rod, and the connecting rod is slidably disposed through the corresponding first circular plate, and the first end of the connecting rod penetrates and extends to a first circular plate at the edge. outside.
The wind wheel mechanism according to claim 1, characterized in that: the first end of the connecting rod is provided with an operating part, and the operating part is in the shape of a circular truncated cone.
An air conditioner, comprising a casing, a condenser, and a servo motor, characterized in that it also includes a wind wheel mechanism rotatably arranged inside the casing and below the condenser, the wind wheel mechanism is driven by the servo motor, and the wind wheel mechanism is driven by the servo motor. The wheel mechanism is the wind wheel mechanism described in any one of claims 1-2.
An air conditioner according to claim 3, characterized in that it further comprises a circular central rod, a bracket, an elastic unit and a supporting mechanism;

A circular through-slot is opened on the shaft along the center of the axis, the central rod slides through the circular through-slot, and one end of the central rod is coaxially connected with the rotating shaft of the servo motor;

The bracket is fixedly arranged on the housing, and one end of the central rod close to the servo motor is rotatably arranged on the bracket;

The elastic unit is arranged between the central rod and the wind wheel mechanism, and the process of recovering the elastic deformation of the elastic unit drives the wind wheel mechanism to slide away from the servo motor;

A through hole is opened on the side of the housing away from the servo motor, and the supporting mechanism is detachably arranged at the through hole of the housing, and the supporting mechanism is engaged with the central rod and the wind wheel mechanism at the same time.
The air conditioner according to claim 4, characterized in that: the bracket is L-shaped, the middle part is connected to the central rod in rotation, and the two ends are respectively connected to the rear side and the bottom of the casing.
The air conditioner according to claim 4, characterized in that: the elastic unit includes a limit ring and a pressure spring, the limit ring is fixed on the center rod and is located on one side of the bracket, and the pressure spring sleeve It is arranged on the central rod, and its two ends are respectively connected with the limit ring and the wind wheel mechanism.
An air conditioner according to any one of claims 4-6, characterized in that: the supporting structure includes a cover, a fixing ring, a bearing and a pin, and the cover is detachably connected in the through hole of the housing The fixed ring is fixedly connected to the inner side of the cover, and the outer ring of the bearing is embedded in the fixed ring; the end of the central rod far away from the servo motor is provided with a card slot, and the end of the shaft rod far away from the servo motor is provided with There is a slanted slot, and the pin is fixedly connected to the end face of the inner ring of the bearing, and is snap-fitted with the card slot and the slanted slot at the same time.
The air conditioner according to claim 7, wherein the cover comprises a hinged first cover and a second cover, the first cover is engaged with the casing, and the second cover The body is engaged with the housing, and the fixing ring is arranged inside the second cover.
A cleaning method for an intelligent air-conditioning wind wheel mechanism, characterized in that it includes:

S1: open the first cover;

S2: Hold the operation part and pull it, and drive the movement of each second circular plate and ring pad through the connecting rod, and the ring pad will wipe and absorb the dust on the air strip;

S3: closing the first cover;

S4: Repeat the process of S1-S3 4-6 times, each interval is 20-30 days;

S5: Open the cover and remove the supporting mechanism, at this time the latch is out of engagement with the card slot and the oblique slot;

S6: Slide the wind wheel mechanism out of the casing from the central rod to the through hole of the casing;

S7: Clean the wind wheel mechanism comprehensively, such as cleaning the shaft, the first circular plate, the wind strip, the second circular plate, the ring sleeve pad, the connecting rod and the operating part;

S8: Slidingly install the cleaned and dried wind wheel mechanism on the center pole again, and slide it into the inside of the housing;

S9: Install the support mechanism to the through hole, insert the pin into the card slot and the oblique slot in turn, and engage the cover with the housing.