Atomization cooling fan

Abstract

An atomization cooling fan comprises a water pump, a water supply pipe, a water volume adjusting valve, a base, a longitudinal seat frame, a control box, a main control board, a swing device and a fan head, the base supports and fixes the longitudinal seat frame, the control box is fixed to the top of the longitudinal seat frame, and the main control board and the water volume adjusting valve are arranged in the control box; the fan head, the swinging device and the control box are sequentially fixed; the water pump is arranged in the water storage tank, the water supply pipe is communicated with the water pump, and the water supply pipe is curled in the control box, passes through the clearance hole and the swing device, enters the fan head and is communicated with the water spraying pipe fitting. The fan motor rotates, and air flows forwards to form negative pressure; water forms water mist in the space between the spraying shell and the water diversion acceleration disc under the action of high-speed rotation of the water diversion acceleration disc, the water mist is sprayed out, the water mist is driven by air flow to flow forwards, and water mist spraying is achieved.

Description

Technical Field

[0001] This utility model relates to a floor fan. Background Technology

[0002] The existing technology, Chinese patent 202221093115.6, relates to a fan with automatically adjustable horizontal oscillation amplitude, including a column, a camera, fan blades, a fan motor, a horizontal oscillation motor, and a control device. The fan motor is connected to the fan blades to drive them to rotate. The horizontal oscillation motor is fixed to the column and connected to the fan motor to drive the fan motor to oscillate horizontally. The camera is fixed to the column to collect facial information and send it to the control device. The control device is connected to both the camera and the horizontal oscillation motor to control the movement of the horizontal oscillation motor based on the facial information sent by the camera. The problem is that it cannot spray water mist. Utility Model Content

[0003] The purpose of this invention is to provide an atomizing air cooler that, while blowing air, disperses water into a mist and sprays out humidified, cool air to lower the temperature.

[0004] This utility model is implemented as follows: an atomizing air cooler, characterized in that it includes a water pump, a water supply pipe, a water flow regulating valve, a base, a longitudinal support frame, a control box, a main control board, a swing device, and a fan head.

[0005] The base includes a water tank with an open top and a lid.

[0006] The control box includes a clearance hole on the top plate and a pipe fixing hole on the bottom plate;

[0007] The fan head includes a rear mesh body, a fan motor, fan blades, a fan housing with front and rear openings, a front mesh body, a spray shell, a spray motor, a water spray pipe, a water distribution and acceleration disc, a front cover, and a rear cover. The spray shell includes a motor base, an acceleration chamber, spray tooth grooves at the front end of the acceleration chamber, and a flow guide and diffuser cup. The spray motor is fixed inside the motor base. The water distribution and acceleration disc is fixed to the motor shaft and embedded in the acceleration chamber, with the edge of the water distribution and acceleration disc opposite to the spray tooth grooves. The front cover is fixed to the flow guide and diffuser cup and opposite to the front end of the acceleration chamber. The rear cover passes through the round hole of the front mesh body and is inserted into the motor base, fixed to the annular base plate and the spray shell. The water spray pipe surrounds the motor base.

[0008] The base supports and fixes the longitudinal frame, and the control box is fixed on the top of the longitudinal frame. The main control board and water volume regulating valve are located inside the control box. The fan head, the swing device and the control box are fixed in sequence. The water pump is located in the water storage tank. The water supply pipe is connected to the water pump, passes through the tank cover, the longitudinal frame and the pipe fixing hole. The water supply pipe is curled in the control box, passes through the clearance hole, and then enters the fan head and the water spray pipe through the swing device.

[0009] The atomizing air cooler described above is characterized in that: a water collection chamber is provided at the bottom of the flow-guiding diffuser cup.

[0010] The bottom plate of the control box is provided with a funnel with an upper opening, and the bottom plate of the funnel is provided with the pipe fixing hole and a drainage hole surrounding the pipe fixing hole;

[0011] It also includes a hollow, bottom-opening cover and a water collection pipe. The cover includes an annular cover, longitudinal pipe holes, and radial pipe holes.

[0012] The lower end of the cover is inserted into the funnel, and the annular flange is fixed to the base plate; the water supply pipe extends out of the radial hole through the pipe fixing hole and the funnel; the water collection pipe is connected to the water collection cavity, enters the control box through the swing device, is inserted into the longitudinal pipe hole and extends into the funnel; the water in the water collection pipe flows down the guide pipe through the drain hole into the base.

[0013] The atomizing air cooler is characterized in that the oscillation device includes a base plate, a plane bearing, an oscillation frame, a motor, a crank, a connecting rod, a transmission shaft, a motor frame, and a cover with a lower opening.

[0014] The base plate has arc-shaped clearance holes;

[0015] The swing frame includes a frame plate and two longitudinal frame plates. The frame plate is provided with a circular hole and an arc-shaped tube hole.

[0016] A planar bearing is mounted on the base plate, and the base plate mates with the planar bearing. The base plate and the fixed shaft on the base plate are rotatably connected via the bearing. The motor mount is fixed to the base plate, the motor is fixed on the motor mount, the motor shaft is fixed to the crank, the other end of the crank is hinged to the connecting rod, and the other end of the connecting rod is pivotally connected to the transmission shaft. The cover is fastened to the base plate, and the water guide pipe enters the cover body through the arc-shaped clearance hole and the arc-shaped pipe hole and extends out of the cover body. The base plate is fixed to the top of the control box, and the longitudinal frame plate and the fan shell are fixed.

[0017] The atomizing air cooler described above is characterized in that: the longitudinal support frame includes two longitudinal support plates and a transverse plate, and the transverse plate is provided with a through hole;

[0018] The transverse plate is fixed at both ends to the longitudinal support plate, and the upper and lower ends of the longitudinal support plate are fixed to the control box and the base, respectively; the water supply pipe passes through the through hole.

[0019] The atomizing air cooler described above is characterized in that the longitudinal support plate is curved.

[0020] The atomizing air cooler is characterized by the following features: the opening on the cover is curved, the cover is provided with a water inlet chamber, and the bottom plate of the water inlet chamber is provided with a water inlet hole;

[0021] It includes a water inlet cover, which includes a circular cover plate and several arc-shaped plates. The circular cover plate includes a central protrusion with a hollow lower opening and an annular water collection groove. The top plate of the central protrusion is provided with a cover pipe hole.

[0022] The water supply pipe passes through the cover hole and can slide, the arc-shaped plate is inserted into the water inlet cavity, and there is a gap between the circular cover plate and the top plate.

[0023] The atomizing air cooler is characterized in that it also includes a water collection and guiding component, including a water collection shell with an upper opening and a drain hole on the bottom plate of a cylindrical tube seat.

[0024] The water supply pipe is fixed to the cylindrical seat pipe, and several water collection and guiding components are provided on the water supply pipe.

[0025] The atomizing cooling fan described above is characterized in that: the water-distributing acceleration disc is curved, with its volume gradually increasing from the center to the radial edge, and is located on the bearing seat;

[0026] The shaft of the spray motor is fixed to the shaft seat.

[0027] The atomizing cooling fan is characterized by the presence of a gap between the edge of the water-distributing acceleration disc and the radial inner wall of the spray tooth groove.

[0028] The atomizing air cooler described above is characterized in that it also includes a waterproof cover, which comprises a cylindrical body and an annular base plate.

[0029] The annular seat plate is fixed to the seat frame plate, and the planar bearing extends into the cylindrical part, with a gap or sliding fit between the lower end of the cylindrical part and the base plate.

[0030] This utility model relates to an atomizing air cooler. When the fan motor rotates, the air flows forward and creates negative pressure. Water is sprayed out as a mist by the high-speed rotation of the water distribution and acceleration plate within the space between the spray shell and the water distribution and acceleration plate. Driven by the air flow, the water mist is sprayed forward. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the present invention.

[0032] Figure 2 This is a perspective view of the present invention.

[0033] Figure 3 This is one of the exploded perspective views of this utility model.

[0034] Figure 4 This is the second exploded perspective view of this utility model.

[0035] Figure 5 This is the third exploded perspective view of this utility model.

[0036] Figure 6 This is a partial sectional view of the present invention.

[0037] Figure 7 This is a partial exploded perspective view of this utility model.

[0038] Figure 8 This is one of the exploded perspective views of the control box of this utility model.

[0039] Figure 9 This is the second exploded perspective view of the control box of this utility model.

[0040] Figure 10 This is one of the exploded perspective views of the head-swinging device of this utility model.

[0041] Figure 11 This is the second exploded perspective view of the head-swinging device of this utility model.

[0042] Figure 12 This is the third exploded perspective view of the head-swinging device of this utility model.

[0043] Figure 13 This is the fourth exploded perspective view of the head-swinging device of this utility model. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] like Figure 1 , Figure 2 , Figure 3 As shown, an industrial humidifying fan includes a water pump 1, a water supply pipe 2, a water flow regulating valve 3, a base 4, a longitudinal support frame 5, a control box 6, a main control board (not shown in the figure), an oscillation device 7, and a fan head 8.

[0047] Water pump 1 is immersed in water in water storage tank 41. Water pump 1 is a submersible pump.

[0048] The base 4 includes a water storage tank 41 with an opening at the top and a tank cover 42.

[0049] The control box 6 includes a clearance hole 61 on the top plate and a pipe fixing hole 62 on the bottom plate;

[0050] like Figure 1 , Figure 6 , Figure 7 As shown, the fan head 8 includes a rear mesh body 80, a fan motor 811, fan blades 812, a fan housing 82 with front and rear openings, a front mesh body 83, a spray housing 84, a spray motor 85, a water spray pipe 86, a water distribution and acceleration plate 87, a front cover 88, and a rear cover 89. The spray housing 84 includes a motor base 841, an acceleration chamber 842, a spray tooth groove 842 located at the front end of the acceleration chamber, a water spray pipe 843, and a flow guide and diffuser cup 844. The flow guide and diffuser cup 844 is truncated cone-shaped, or in other words, it is flared from a fixed end to an open end. The water spray pipe 86 is arc-shaped or slightly arc-shaped, with one end connected to the water supply pipe 2. The water spray pipe 86 is provided with spray holes, which are opposite to the water distribution and acceleration plate 87. The spray housing 84, the spray motor 85, the water spray pipe 86, the water distribution and acceleration plate 87, the front cover 88, and the rear cover 89 constitute the spray head 8A.

[0051] The motor mount 841 extends into the acceleration chamber 842. The spray motor 85 is fixed inside the motor mount, and the motor shaft extends into the acceleration chamber 842. The water distribution acceleration disc 87 is fixed to the motor shaft and embedded in the acceleration chamber 842. The edge of the water distribution acceleration disc is opposite to the spray tooth groove 8421. The front cover 88 is fixed to the guide diffuser cup 844 and is opposite to the front end of the acceleration chamber 842. The rear cover 89 passes through the round hole of the front mesh body 83 and is inserted into the motor mount 841. The annular seat plate 891 of the rear cover 89 and the spray shell 84 are fixed with screws. The water spray pipe 843 surrounds the motor mount, and the water spray hole of the water spray pipe 843 faces the water distribution acceleration disc 87. The fan motor is fixed to the rear mesh body 80.

[0052] The base 4 supports and fixes the longitudinal frame 5. The control box 6 is fixed on the top of the longitudinal frame 5. The main control board 7 and the water volume regulating valve 3 are located inside the control box 6. The fan head 8, the swing device 7 and the control box 6 are fixed in sequence. The water pump 1 is located in the water storage tank 41. The water supply pipe 2 is connected to the water pump 1, passes through the tank cover 42, the longitudinal frame 5 and the pipe fixing hole 62. The water supply pipe 2 is curled in the control box 6, passes through the clearance hole 61, and then enters the fan head 8 through the swing device 7 and is connected to the water spray pipe.

[0053] With this structure, the fan motor 811, spray motor 85, and water pump 1 are energized, and the water flow valve 3 is opened or adjusted. Figure 1As shown, air flows from left to right, entering the fan housing 82 through the rear mesh 80 and exiting through the front mesh 83. During this airflow, negative pressure is generated. Simultaneously, water enters the spray nozzle 843 through the water tank 41, water pump 1, water supply pipe 2, and water flow regulating valve 3. The spray nozzle 843 sprays water onto the water distribution and acceleration plate 847. Due to the high-speed rotation of the water distribution and acceleration plate 847, the water is dispersed, and the dispersed water moves radially along the water distribution and acceleration plate 847. Water mist is sprayed out through the spray tooth groove 8421 and then guided by the flow-guiding diffuser cup 844. The water mist moves forward under the influence of the airflow. The oscillation device 7 operates, causing the fan head 8 to oscillate left and right. The water supply pipe 2 oscillates within the control box 6 and the clearance hole 61.

[0054] As a further improvement of this utility model: the bottom of the flow-guiding diffusion cup 844 is provided with a water collection cavity 8441.

[0055] like Figure 8 , Figure 9 As shown, the bottom plate of the control box 6 is provided with a funnel 63 with an upper opening, and the bottom plate of the funnel 63 is provided with the pipe fixing hole 62 and the drain hole 65 surrounding the pipe fixing hole 62.

[0056] It also includes a hollow, bottom-opening cover 64 and a water collection pipe 9. The cover 64 includes an annular flange 641, a longitudinal pipe hole 642, and a radial pipe hole 643. The water collection pipe 9 swings within the control box 6 and the clearance hole 61.

[0057] The lower end of the cover 64 is inserted into the funnel 63, and the annular flange 641 is fixed to the bottom plate of the control box 6; the water supply pipe 2 extends out from the radial pipe hole 643 of the cover 64 through the pipe fixing hole 62 and the funnel 63; the water collection pipe 9 is connected to the water collection cavity 8441, enters the control box 6 through the swing device 7, is inserted into the longitudinal pipe hole 642 and extends into the funnel 63; the water in the water collection pipe 9 enters the funnel, flows down the outer surface of the water supply pipe 2 through the drain hole 65 into the base 4, that is, into the water storage tank 41.

[0058] like Figure 1 , Figure 10 , Figure 11 , Figure 12 As shown, the swing device 7 includes a base plate 71, a plane bearing 72, a swing frame 73, a motor 74, a crank 75, a connecting rod 76, a transmission shaft 77, a motor frame 78, and a cover 79 with a lower opening.

[0059] The base plate 71 is provided with an arc-shaped clearance hole 711; the water supply pipe 2 and the water collection pipe 9 swing within the arc-shaped clearance hole 711;

[0060] The swing frame 73 includes a frame plate 731 and two longitudinal frame plates 732. The frame plate 731 is provided with a circular hole 7311 and an arc-shaped pipe hole 7312; the arc-shaped pipe hole 7312 is through which the water supply pipe 2 and the water collection pipe 9 pass.

[0061] A planar bearing 72 is mounted on a base plate 71. A mounting plate 731 is slidably fitted with the planar bearing 72. The mounting plate 731 and a fixed shaft on the base plate 71 are rotatably fitted through a bearing 70. A motor mount 78 is fixed to the mounting plate 731. A motor 74 is fixed to the motor mount 78. The motor shaft is fixed to a crank 75. The other end of the crank 75 is hinged to a connecting rod 76. The other end of the connecting rod 76 is pivotally connected to a transmission shaft 77. The crank 75 rotates within a circular hole 7311. A cover 79 is fastened to the mounting plate 731. The water supply pipe 2 and the water collection pipe 9 enter the cover 79 through an arc-shaped clearance hole 711 and an arc-shaped pipe hole 7312 and extend out of the cover 79. The base plate 71 is fixed to the top of the control box 6. The longitudinal frame plate 732 and the fan shell 82 are fixed.

[0062] As a further improvement of this utility model, it also includes a waterproof cover 70, which includes a cylindrical body 701 and an annular seat plate 702.

[0063] The annular seat plate 702 is fixed to the seat frame plate 731, the plane bearing 72 extends into the cylindrical part 701, and there is a gap or sliding fit between the lower end of the cylindrical part 701 and the base plate 71.

[0064] As a further improvement of this utility model: the longitudinal support frame 5 includes two longitudinal support plates 51 and a transverse plate 52, and the transverse plate 52 is provided with a through hole;

[0065] The two ends of the transverse plate 52 are fixed to the middle of the longitudinal support plate 51, and the upper and lower ends of the longitudinal support plate 51 are fixed to the control box 6 and the base 4 respectively; the water supply pipe 2 and the water collection pipe 9 pass through the through hole.

[0066] As a further improvement of this utility model, the longitudinal support plate 51 is curved.

[0067] As a further improvement of this utility model: the opening of the box cover 42 is curved and the volume gradually increases from bottom to top, which can also be described as a spherical curved surface. The box cover 42 is provided with a water inlet cavity 421, and the bottom plate of the water inlet cavity 421 is provided with a water inlet hole.

[0068] It includes a water inlet cover 43, which includes a circular cover plate 431 and several arc-shaped plates 432. The circular cover plate 431 includes a central protrusion 4311 with a hollow lower opening and an annular water collection groove. The top plate of the central protrusion 4311 is provided with a cover pipe hole 4312.

[0069] The water supply pipe 2 passes through the cover pipe hole 4312 and can be slidably fitted. The arc-shaped plate 432 is inserted into the water inlet cavity 421. There is a gap between the circular cover plate 431 and the tank cover 42.

[0070] Alternatively, the arc-shaped plate 432 may have an axial protrusion that fits against the inner wall of the water inlet cavity 421.

[0071] With this structure, water is added to the water storage tank 41, the water inlet cover 43 is moved, the water inlet cover 43 moves along the water supply pipe 2, water is added to the tank cover 42, and the water enters the water storage tank 41 through the water inlet cavity; or water is added directly to the tank cover 42, and the water is added through the gap between the circular cover plate 431 and the tank cover 42, and the water inlet cavity 421 between the two arc plates 432.

[0072] With this structure, water flows out of the drain hole 65 on the funnel 63, flows down along the water supply pipe, falls onto the central protrusion 4311, then enters the annular water collection tank, and then enters the water storage tank 41 through the water holes on the bottom plate of the annular water collection tank.

[0073] As a further improvement of this utility model, it also includes a water collection and guiding component 10, which includes a water collection shell 101 with an upper opening, a cylindrical tube seat 102 provided on the bottom plate, and a bottom drainage hole 103 provided on the bottom plate.

[0074] The water supply pipe 2 is fixed to the cylindrical seat pipe 102, and the water supply pipe 2 is provided with a number of water collection and guiding components 10.

[0075] As a further improvement of this utility model: the water-dividing acceleration disk 87 is curved, and its volume gradually increases from the middle to the radial edge and is provided with a bearing seat 871;

[0076] The shaft of the spray motor 85 is fixed to the shaft seat 871;

[0077] There is a gap between the edge of the water-distributing acceleration disk 87 and the radial inner wall of the spray tooth groove 8421.

[0078] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A misting air cooler, characterized in that: Includes a water pump, water supply pipe, water flow regulating valve, base, longitudinal support frame, control box, main control board, oscillation device, and fan head. The base includes a water tank with an open top and a lid. The control box includes a clearance hole on the top plate and a pipe fixing hole on the bottom plate; The fan head includes a rear mesh body, a fan motor, fan blades, a fan housing with front and rear openings, a front mesh body, a spray shell, a spray motor, a water spray pipe, a water distribution and acceleration disc, a front cover, and a rear cover. The spray shell includes a motor base, an acceleration chamber, spray tooth grooves at the front end of the acceleration chamber, and a flow guide and diffuser cup. The spray motor is fixed inside the motor base. The water distribution and acceleration disc is fixed to the motor shaft and embedded in the acceleration chamber, with the edge of the water distribution and acceleration disc opposite to the spray tooth grooves. The front cover is fixed to the flow guide and diffuser cup and opposite to the front end of the acceleration chamber. The rear cover passes through the round hole of the front mesh body and is inserted into the motor base, fixed to the annular base plate and the spray shell. The water spray pipe surrounds the motor base. The base supports and fixes the longitudinal frame, and the control box is fixed on the top of the longitudinal frame. The main control board and water volume regulating valve are located inside the control box. The fan head, the swing device and the control box are fixed in sequence. The water pump is located in the water storage tank. The water supply pipe is connected to the water pump, passes through the tank cover, the longitudinal frame and the pipe fixing hole. The water supply pipe is curled in the control box, passes through the clearance hole, and then enters the fan head and the water spray pipe through the swing device.

2. The atomizing air cooler according to claim 1, characterized in that: The bottom of the flow-guiding diffusion cup is provided with a water collection chamber. The bottom plate of the control box is provided with a funnel with an upper opening, and the bottom plate of the funnel is provided with the pipe fixing hole and a drainage hole surrounding the pipe fixing hole; It also includes a hollow, bottom-opening cover and a water collection pipe. The cover includes an annular cover, longitudinal pipe holes, and radial pipe holes. The lower end of the cover is inserted into the funnel, and the annular flange is fixed to the base plate; the water supply pipe extends out of the radial pipe hole through the pipe fixing hole and the funnel; the water collection pipe is connected to the water collection cavity, enters the control box through the swing device, is inserted into the longitudinal pipe hole and extends into the funnel; the water in the water collection pipe enters the funnel and flows down the water supply pipe into the base through the drain hole.

3. The atomizing air cooler according to claim 2, characterized in that: The swinging device includes a base plate, a plane bearing, a swinging frame, a motor, a crank, a connecting rod, a transmission shaft, a motor frame, and a cover with a lower opening. The base plate has arc-shaped clearance holes; The swing frame includes a frame plate and two longitudinal frame plates. The frame plate is provided with a circular hole and an arc-shaped tube hole. A planar bearing is mounted on the base plate, and the base plate mates with the planar bearing. The base plate and the fixed shaft on the base plate are rotatably connected via the bearing. The motor mount is fixed to the base plate, the motor is fixed on the motor mount, the motor shaft is fixed to the crank, the other end of the crank is hinged to the connecting rod, and the other end of the connecting rod is pivotally connected to the transmission shaft. The cover is fastened to the base plate, and the water supply pipe and the water collection pipe enter the cover through the arc-shaped clearance hole and the arc-shaped pipe hole and extend out of the cover. The base plate is fixed to the top of the control box, and the longitudinal frame plate and the fan shell are fixed.

4. The atomizing air cooler according to claim 2, characterized in that: The longitudinal support frame includes two longitudinal support plates and a transverse plate, with through holes provided on the transverse plate; The transverse plate is fixed at both ends to the longitudinal support plate, and the upper and lower ends of the longitudinal support plate are fixed to the control box and the base, respectively; the water supply pipe passes through the through hole.

5. The atomizing air cooler according to claim 4, characterized in that: The longitudinal support plate is curved.

6. The atomizing air cooler according to claim 2, characterized in that: The box cover has an opening with a curved shape, and the box cover is provided with a water inlet cavity. The bottom plate of the water inlet cavity is provided with a water inlet hole. It includes a water inlet cover, which includes a circular cover plate and several arc-shaped plates. The circular cover plate includes a central protrusion with a hollow lower opening and an annular water collection groove. The top plate of the central protrusion is provided with a cover pipe hole. The water supply pipe passes through the cover hole and can slide, the arc-shaped plate is inserted into the water inlet cavity, and there is a gap between the circular cover plate and the top plate.

7. Atomizing air cooler according to claim 6, characterized in that: It also includes water collection and guiding components, including a water collection shell with an upper opening, a bottom drainage hole on the bottom plate of a cylindrical pipe seat located on the bottom plate; The water supply pipe is fixed to the cylindrical seat pipe, and several water collection and guiding components are provided on the water supply pipe.

8. The atomizing air cooler according to claim 1, characterized in that: The water-dividing acceleration disk is curved, with its volume gradually increasing from the center to the radial edge, and it is equipped with a bearing seat. The shaft of the spray motor is fixed to the shaft seat.

9. Atomizing air cooler according to claim 8, characterized in that: There is a gap between the edge of the water-distributing acceleration disc and the radial inner wall of the spray tooth groove.

10. Atomizing air cooler according to claim 3, characterized in that: It also includes a waterproof cover, which comprises a cylindrical body and an annular seat plate; The annular seat plate is fixed to the seat frame plate, and the planar bearing extends into the cylindrical part, with a gap or sliding fit between the lower end of the cylindrical part and the base plate.

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