Radiator assembly, reactor box, air conditioner and control method

Abstract

The invention provides a radiator assembly, a reactor box, an air conditioner and a control method, the radiator assembly comprises a radiator, a mounting plate and a water retaining structure; the mounting plate is provided with a first end face, and the radiator is arranged on the first end face. The water retaining structure comprises a first baffle and a second baffle, the first baffle and the second baffle are movably arranged on the first end face, a heat dissipation air channel is formed between the first baffle and the second baffle, and the radiator is located in the heat dissipation air channel. The heat dissipation air channel is provided with an air inlet and an air outlet, and the first end of the first baffle and the first end of the second baffle are connected or far away to close or open the air inlet. The second end of the first baffle and the second end of the second baffle are connected or away from each other so as to close or open the air outlet. The dynamic water retaining structure can be adjusted according to changes of environmental conditions, wind resistance can be reduced, and smoothness of an air duct is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to a radiator assembly, a reactor box, an air conditioner and a control method. Background Art

[0002] In commercial air-conditioning all-in-one units, in order to save space in the unit design, the reactor will be wrapped in a separate box and installed above the fan in the air duct. The all-in-one unit is usually placed outdoors. The normal working environment of the unit can be very harsh, and there may be strong winds and heavy rains. Therefore, the waterproofing of the reactor box has become a very important issue.

[0003] As an electrical component, the reactor will inevitably generate heat during its operation. If this heat cannot be processed in time, the working efficiency of the reactor will decrease. Therefore, it is very important to dissipate heat for the reactor. The reactor generates serious heat during operation. A wind-cooled radiator can be added on the air duct side of the reactor box. However, the working environment of the commercial air-conditioning integrated machine is outdoors, and the air volume of the fan is large. On rainy days, raindrops follow the flow of wind in the air duct, and there is a risk that raindrops will hit the radiator upwards, and then the reactor box will be flooded. The existing waterproof baffles are all a whole piece of plastic plate or sheet metal plate fixedly installed around the radiator to block water, which affects the heat dissipation of the radiator and the reactor box by the air duct. Summary of the invention

[0004] The present invention provides a radiator assembly, a reactor box, an air conditioner and a control method, which can solve the technical problem that the existing waterproof baffles are all a whole piece of plastic plate or sheet metal plate fixedly installed around the radiator for water blocking, which affects the heat dissipation of the radiator and the reactor box by the air duct.

[0005] The present invention provides a radiator assembly, which includes a radiator, a mounting plate and a water retaining structure;

[0006] The mounting plate has a first end surface, and the heat sink is arranged on the first end surface;

[0007] The water retaining structure comprises a first baffle and a second baffle, the first baffle and the second baffle are movably arranged on the first end surface, a heat dissipation duct is formed between the first baffle and the second baffle, and the radiator is located in the heat dissipation duct;

[0008] The heat dissipation air duct has an air inlet and an air outlet, the first end of the first baffle plate and the first end of the second baffle plate are connected to or away from each other to close or open the air inlet; the second end of the first baffle plate and the second end of the second baffle plate are connected to or away from each other to close or open the air outlet.

[0009] In some embodiments, the first baffle plate and the second baffle plate are arc-shaped, and the first baffle plate and the second baffle plate are respectively movably disposed along the circumference of the first end surface.

[0010] In some embodiments, the first baffle plate includes a first inner plate and a first outer plate, the first inner plate and the first outer plate are movably arranged on the first end face, the first inner plate is located on the radial inner side of the first outer plate, the first end of the first inner plate and the first end of the first outer plate are opposite to each other, and the second end of the first inner plate and the second end of the first outer plate are arranged to move in opposite directions; the second end of the first outer plate and the first end of the second baffle plate are connected to or away from each other, and the second end of the first inner plate and the second end of the second baffle plate are connected to or away from each other.

[0011] In some embodiments, the second baffle comprises a second inner plate and a second outer plate, the second inner plate and the second outer plate are movably arranged on the first end surface, the second inner plate is located radially inward of the second outer plate, the first end of the second inner plate and the first end of the second outer plate are arranged opposite to each other, and the second end of the second inner plate and the second end of the second outer plate are arranged to move in opposite directions;

[0012] The second end of the first outer panel and the second end of the second inner panel are connected to or away from each other to close or open the air inlet; the second end of the first inner panel and the second end of the second outer panel are connected to or away from each other to close or open the air outlet.

[0013] In some embodiments, the water retaining structure also includes an inner guide rail and an outer guide rail, wherein the inner guide rail and the outer guide rail are respectively arranged on the first end face, the inner guide rail is located radially inward of the outer guide rail, the first inner plate and the second inner plate are respectively slidably connected to the inner guide rail, and the first outer plate and the second outer plate are respectively slidably connected to the outer guide rail.

[0014] In some embodiments, the water retaining structure also includes a first driving member and a second driving member, the first driving member and the second driving member are arranged on the first end surface, the first driving member is connected to the first baffle through a first transmission assembly, and the second driving member is connected to the second baffle through a second transmission assembly.

[0015] In some embodiments, the first transmission assembly includes a first output gear, a first transmission gear and a first conveyor belt, the first output gear is disposed on the output shaft of the first driving member, the first output gear is meshed with the first transmission gear, the first conveyor belt is sleeved on the first baffle, and the outer peripheral side of the first conveyor belt is provided with meshing teeth meshed with the first transmission gear;

[0016] The second transmission assembly includes a second output gear, a second transmission gear and a second conveyor belt. The second output gear is arranged on the output shaft of the second driving member, and the second output gear is meshed with the second transmission gear. The second conveyor belt is sleeved on the second baffle plate, and the outer peripheral side of the second conveyor belt is provided with meshing teeth meshed with the second transmission gear.

[0017] In some embodiments, the water retaining structure also includes a first water drop sensor, a second water drop sensor and a third water drop sensor, the first water drop sensor, the second water drop sensor and the third water drop sensor are respectively arranged on the first end face, the first water drop sensor is located on the radial outside of the air inlet, the second water drop sensor is located on the radial outside of the air outlet, and the third water drop sensor is respectively arranged on the radial outside of the first baffle and the second baffle.

[0018] A reactor box comprises a box body and a radiator assembly, wherein the radiator assembly is the above-mentioned radiator assembly, the end surface of the mounting plate facing away from the first end surface is connected to the bottom of the box body; the mounting plate is provided with a mounting through hole, and the radiator is embedded in the mounting through hole.

[0019] An air conditioner comprises a reactor box, wherein the reactor box is the above-mentioned reactor box.

[0020] A control method is provided, the control method being used to control the above-mentioned radiator assembly, the control method comprising:

[0021] The water retaining structure has a first state, a second state and a third state;

[0022] When the water retaining structure is in the first state, the first end of the first baffle and the first end of the second baffle are away from each other, the second end of the first baffle and the second end of the second baffle are away from each other, the air inlet and the air outlet are both open, and the wind in the heat dissipation duct flows out from the air outlet;

[0023] When the water retaining structure is in the second state, the first end of the first baffle plate and the first end of the second baffle plate are away from each other, the second end of the first baffle plate and the second end of the second baffle plate are connected to each other, the air inlet is opened, the air outlet is closed, and the air in the heat dissipation duct overflows from the air inlet;

[0024] When the water retaining structure is in the third state, the first end of the first baffle and the first end of the second baffle are connected to each other, the second end of the first baffle and the second end of the second baffle are connected to each other, the air inlet and the air outlet are both closed, and the heat dissipation channel is not ventilated.

[0025] In some embodiments, when the water retaining structure further includes a first water drop sensor, a second water drop sensor, and a third water drop sensor, the control method further includes:

[0026] When the first water drop sensor, the second water drop sensor and the third water drop sensor are not triggered, the water retaining structure is in the first state;

[0027] When the first water drop sensor is triggered, or the second water drop sensor is triggered, or the third water drop sensor is triggered, the water retaining structure is in the second state;

[0028] When the first water drop sensor, the second water drop sensor, and the third water drop sensor are all triggered, the water retaining structure is in the third state.

[0029] The present invention provides a radiator assembly, a reactor box, an air conditioner and a control method, which have the following features:

[0030] Beneficial effects:

[0031] In the present invention, under different environmental conditions, the first baffle and the second baffle can adapt to environmental changes by dynamically adjusting their positions. For example, when it is not raining, the baffle can be fully opened to allow the maximum amount of air to pass through, so as to improve the heat dissipation efficiency; when it is raining, the baffle can be adjusted to block the entry of rainwater while still allowing air circulation, thereby preventing moisture from entering and minimizing the impact on the air duct as much as possible. The dynamic water retaining structure can reduce wind resistance and increase the air outlet area by reasonably setting the opening and closing state of the baffle, so as to ensure the patency of the air duct while ensuring waterproofing. This setting can reduce the resistance to the external air duct to a certain extent and improve the heat dissipation efficiency. Moreover, by adjusting the position of the baffle, the path of the airflow can be optimized, so that the airflow flows through the radiator more smoothly, thereby improving the heat dissipation efficiency. For example, when the baffle is partially closed, the airflow can be guided to flow along a specific path, thereby improving the heat dissipation effect. Compared with the traditional fixed waterproof baffle, the dynamic water retaining structure can be adjusted according to the changes in environmental conditions to adapt to different working conditions, and can be adjusted according to actual needs to adapt to different wind speeds and wind directions, so as to maintain good heat dissipation performance under different environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0033] Figure 1 is a schematic diagram of a heat sink assembly according to an embodiment of the present invention;

[0034] Figure 2 An exploded schematic diagram of a mounting plate and a water retaining structure according to an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the connection between the mounting plate and the water retaining structure according to an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of a water retaining structure in a first state according to an embodiment of the present invention;

[0037] Figure 5 A schematic diagram of a water retaining structure in a second state according to an embodiment of the present invention;

[0038] Figure 6 A schematic diagram of a water retaining structure in a third state of an embodiment of the present invention;

[0039] Figure 7 It is a schematic diagram of the heat sink and the box body connected in accordance with an embodiment of the present invention;

[0040] Figure 8 is a schematic diagram of a reactor box according to an embodiment of the present invention;

[0041] Fig. 9 is a schematic diagram of the flow direction of wind in an external wind duct according to an embodiment of the present invention;

[0042] Figures: 1- radiator; 2- mounting plate; 201- first end face; 202- mounting through hole; 3- water retaining structure; 31- first baffle; 311- first inner plate; 312- first outer plate; 32- second baffle; 321- second inner plate; 322- second outer plate; 33- inner guide rail; 34- outer guide rail; 35- first driving member; 36- second driving member; 371- first transmission gear; 372- second transmission gear; 381- first water drop sensor; 382- second water drop sensor; 383- third water drop sensor; 301- heat dissipation duct; 302- air inlet; 303- air outlet; 4- fan; 5- box body. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0045] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0047] See also Figures 1 to 6 As shown, according to an embodiment of the present invention, a radiator assembly is provided, which includes a radiator 1, a mounting plate 2 and a water retaining structure 3; the mounting plate 2 has a first end surface 201, and the radiator 1 is arranged on the first end surface 201; the water retaining structure 3 includes a first baffle 31 and a second baffle 32, the first baffle 31 and the second baffle 32 are movably arranged on the first end surface 201, a heat dissipation duct 301 is formed between the first baffle 31 and the second baffle 32, and the radiator 1 is located in the heat dissipation duct 301; the heat dissipation duct 301 has an air inlet 302 and an air outlet 303, the first end of the first baffle 31 and the first end of the second baffle 32 are connected to or away from each other to close or open the air inlet 302; the second end of the first baffle 31 and the second end of the second baffle 32 are connected to or away from each other to close or open the air outlet 303.

[0048] Specifically, the radiator 1 is loosely mounted on the first end surface 201. When the external environment is in a non-raining state, the heat dissipation duct 301 can be ventilated normally to dissipate heat for the radiator 1. The first end of the first baffle 31 and the first end of the second baffle 32 are separated from each other, and the second end of the first baffle 31 and the second end of the second baffle 32 are separated from each other. At this time, the air inlet 302 and the air outlet 303 are both opened, so that the wind in the external air duct flows from the air inlet 302 into the heat dissipation duct 301. Since the radiator 1 is located in the heat dissipation duct 301, the air flowing into the heat dissipation duct 301 is The wind in the heat dissipation duct 301 dissipates heat for the radiator 1 and then flows out from the air outlet 303. The wind in the heat dissipation duct 301 can flow in and out normally. At this time, the water retaining structure 3 has little effect on the external air duct. When the external environment is in a rainy state, but the water droplets are not affected by the external air duct and roll up or only a small amount of water droplets roll up, at this time, the first end of the first baffle 31 and the first end of the second baffle 32 are far away from each other, and the second end of the first baffle 31 and the second end of the second baffle 32 are connected to each other, that is, the air inlet 302 is open, and the air outlet 303 is open. 03 is closed, and wind flows into the heat dissipation duct 301 from the air inlet 302. After cooling the radiator 1 in the heat dissipation duct 301, the wind flows along the inner walls of the first baffle 31 and the second baffle 32 and escapes from the air inlet 302. At this time, although the water retaining structure 3 has a certain influence on the external air duct, it can prevent water droplets from flowing into the heat dissipation duct 301 to a certain extent; when the external environment is in a rainy state, and the water droplets are affected by the external environment and roll up, that is, they will be rolled into the heat dissipation duct 301 from the direction facing the first end face 201, At this time, the first end of the first baffle 31 and the first end of the second baffle 32 are connected to each other, the second end of the first baffle 31 and the second end of the second baffle 32 are connected to each other, the air inlet 302 and the air outlet 303 are both closed, and no air enters the heat dissipation duct 301. Since the first baffle 31 and the second baffle 32 have a certain height, they can block a large amount of water droplets from falling on the radiator 1. Even if a small amount of water droplets fall into the radiator 1, they will not enter the interior of the reactor box. When it stops raining in the external duct, the water retaining structure 3 can return to a normal ventilation state.

[0049] In this embodiment, under different environmental conditions, the first baffle 31 and the second baffle 32 can adapt to environmental changes by dynamically adjusting their positions. For example, when it is not raining, the baffle can be fully opened to allow the maximum amount of air to pass through, so as to improve the heat dissipation efficiency; when it is raining, the baffle can be adjusted to block the entry of rainwater while still allowing air circulation, thereby preventing moisture from entering while minimizing the impact on the air duct. The dynamic water retaining structure 3 can reduce wind resistance and increase the area of ​​the air outlet 303 by reasonably setting the opening and closing state of the baffle, so as to ensure the patency of the air duct while ensuring waterproofing. This setting can reduce the resistance to the external air duct to a certain extent and improve the heat dissipation efficiency. Moreover, by adjusting the position of the baffle, the path of the airflow can be optimized, so that the airflow can flow through the radiator 1 more smoothly, thereby improving the heat dissipation efficiency. For example, when the baffle is partially closed, the airflow can be guided to flow along a specific path, thereby improving the heat dissipation effect. Compared with the traditional fixed waterproof baffle, the dynamic water retaining structure 3 can be adjusted according to changes in environmental conditions to adapt to different working conditions, and can be adjusted according to actual needs to adapt to different wind speeds and directions, thereby maintaining good heat dissipation performance under different environmental conditions.

[0050] It is worth mentioning that the flow direction of the wind in the external air duct and the heat dissipation air duct 301 is parallel to the first end face 201. If there are a large number of water droplets, the external air duct will drive the water droplets to flow into the heat dissipation air duct 301. The increase in wind speed will also cause the water droplets to be drawn into the radiator 1. The water retaining structure 3 of this embodiment can prevent the water droplets from falling onto the radiator 1 to the greatest extent. Even if a small amount of water droplets fall onto the radiator 1, it will not affect the overall performance. Therefore, the movement state of the first baffle 31 and the second baffle 32 can be flexibly adjusted according to different external environments.

[0051] See also Figures 1 to 6 As shown, the first baffle plate 31 and the second baffle plate 32 are arc-shaped, and the first baffle plate 31 and the second baffle plate 32 are respectively movably arranged along the circumference of the first end surface 201 .

[0052] In this embodiment, when the first baffle 31 and the second baffle 32 move, the movement paths of the first baffle 31 and the second baffle 32 are also arc-shaped. The arc-shaped design can more effectively guide the airflow, reduce the vortex and disturbance generated by the airflow around the radiator 1, thereby improving the heat dissipation efficiency. Since the baffle can move circumferentially along the first end surface 201, the position can be dynamically adjusted according to different environmental conditions (such as wind direction and wind speed) to achieve the best heat dissipation and waterproof effect. In addition, compared with the straight baffle, the arc-shaped baffle can reduce the obstruction to the airflow, thereby reducing the wind resistance, improving the ventilation efficiency of the air duct, reducing the sharp corners, and can disperse the wind more evenly, thereby improving the structural strength of the baffle.

[0053] See also Figures 1 to 6 As shown, the first baffle 31 includes a first inner plate 311 and a first outer plate 312, the first inner plate 311 and the first outer plate 312 are movably arranged on the first end surface 201, the first inner plate 311 is located on the radial inner side of the first outer plate 312, the first end of the first inner plate 311 and the first end of the first outer plate 312 are arranged opposite to each other, and the second end of the first inner plate 311 and the second end of the first outer plate 312 are arranged to move in opposite directions; the second end of the first outer plate 312 and the first end of the second baffle 32 are connected to or away from each other, and the second end of the first inner plate 311 and the second end of the second baffle 32 are connected to or away from each other.

[0054] Specifically, when the external environment is in a non-raining state, the heat dissipation duct 301 can be ventilated normally to dissipate heat for the radiator 1, the second end of the first outer plate 312 and the first end of the second baffle 32 are far away from each other, and the second end of the first inner plate 311 and the second end of the second baffle 32 are far away from each other, that is, the first ends of the first inner plate 311 and the first outer plate 312 overlap with each other for a large part, and at this time the air inlet 302 and the air outlet 303 are both open, so that the wind in the external air duct flows into the heat dissipation duct 301 from the air inlet 302. Since the radiator 1 is located in the heat dissipation duct 301, the wind flowing into the heat dissipation duct 301 dissipates heat for the radiator 1 and then flows out from the air outlet 303; when the external environment is in a rainy state, but the water droplets are not affected by the external air duct and roll up or only a small amount of water droplets roll up, at this time, the second end of the first outer plate 312 and the first end of the second baffle 32 are far away from each other, the second end of the first inner plate 311 and the second end of the second baffle 32 are connected to each other, that is, the first inner plate 311 The second end of the air inlet 302 moves in the circumferential direction, the air inlet 302 is open, and the air outlet 303 is closed, and the wind flows into the heat dissipation duct 301 from the air inlet 302. After the heat dissipation of the radiator 1 in the heat dissipation duct 301, the wind flows along the inner wall of the first inner plate 311, the first outer plate 312 and the second baffle plate 32, and escapes from the air inlet 302. At this time, although the water retaining structure 3 has a certain influence on the external air duct, it can prevent water droplets from flowing into the heat dissipation duct 301 to a certain extent; when the external ring When it is raining, and the water droplets are affected by the external environment and roll up, at this time, the second end of the first outer plate 312 and the first end of the second baffle 32 are connected to each other, and the second end of the first inner plate 311 and the second end of the second baffle 32 are connected to each other, that is, the first inner plate 311 and the first outer plate 312 overlap less, the air inlet 302 and the air outlet 303 are both closed, and no air enters the heat dissipation duct 301. Since the baffle has a certain height, it can prevent a large number of water droplets from falling onto the radiator 1.

[0055] In this embodiment, when it rains, by adjusting the positions of the first inner plate 311 and the first outer plate 312, rainwater can be more effectively blocked from entering the heat dissipation duct 301. Since the first inner plate 311 is located radially inward of the first outer plate 312, the double-layer plate provides additional protection and reduces the chance of rainwater directly contacting the radiator 1. In non-rainy weather, the two plates are relatively close to each other, which can maximize the open area of ​​the air inlet 302 and the air outlet 303, thereby improving the ventilation efficiency of the heat dissipation duct 301 and enhancing the heat dissipation capacity of the radiator 1. In addition, the first inner plate 311 and the first outer plate 312 can move in opposite directions, and can be finely adjusted under different environmental conditions to adapt to changes in the external environment, such as wind speed, wind direction and rainfall conditions, so as to find a balance between waterproofing and heat dissipation.

[0056] It is worth mentioning that the first end of the first inner plate 311 and the first end of the first outer plate 312 are arranged relative to each other, which means that the first end of the first inner plate 311 is always located radially inside the first outer plate 312. Since the second ends of the two are to move in opposite directions, the first end of the first inner plate 311 and the first end of the first outer plate 312 only need to maintain a relative relationship, and the two ends do not need to be connected. Under certain circumstances, the first ends of the two can overlap.

[0057] See also Figures 1 to 6 As shown, the second baffle 32 includes a second inner plate 321 and a second outer plate 322, the second inner plate 321 and the second outer plate 322 are movably arranged on the first end surface 201, the second inner plate 321 is located on the radial inner side of the second outer plate 322, the first end of the second inner plate 321 and the first end of the second outer plate 322 are relatively arranged, and the second end of the second inner plate 321 and the second end of the second outer plate 322 are arranged to move in the opposite direction; the second end of the first outer plate 312 and the second end of the second inner plate 321 are connected to or away from each other to close or open the air inlet 302; the second end of the first inner plate 311 and the second end of the second outer plate 322 are connected to or away from each other to close or open the air outlet 303.

[0058] Specifically, when the external environment is in a non-raining state, the heat dissipation duct 301 can be ventilated normally to dissipate heat for the radiator 1, and the second end of the first outer plate 312 and the second end of the second inner plate 321 are far away from each other, and the second end of the first inner plate 311 and the second end of the second outer plate 322 are far away from each other. At this time, the air inlet 302 and the air outlet 303 are both open, so that the wind in the external air duct flows into the heat dissipation duct 301 from the air inlet 302. Since the radiator 1 is located in the heat dissipation duct 301, the wind flowing into the heat dissipation duct 301 dissipates heat for the radiator 1 and then flows out from the air outlet 303; when the external environment is in a rainy state, but the water droplets are not affected by the external air duct and roll up or only a small amount of water droplets roll up, at this time, the second end of the first outer plate 312 and the second end of the second inner plate 321 are far away from each other, and the second end of the first inner plate 311 and the second end of the second outer plate 322 are connected to each other, that is, the air inlet 302 is open, The air outlet 303 is closed, and the wind flows into the heat dissipation duct 301 from the air inlet 302. After the heat is dissipated to the radiator 1 in the heat dissipation duct 301, the wind flows along the inner walls of the first inner plate 311, the first outer plate 312 and the second baffle plate 32, and escapes from the air inlet 302. At this time, although the water retaining structure 3 has a certain influence on the external air duct, it can prevent water droplets from flowing into the heat dissipation duct 301 to a certain extent; when the external environment is in a rainy state, and the water droplets are affected by the external environment and roll upward, that is, they will be rolled into the heat dissipation duct 301 from the direction facing the first end face 201. At this time, the second end of the first outer plate 312 and the second end of the second inner plate 321 are connected to each other, and the second end of the first inner plate 311 and the second end of the second outer plate 322 are connected to each other. The air inlet 302 and the air outlet 303 are both closed, and no air enters the heat dissipation duct 301. Since the baffle has a certain height, it can prevent a large amount of water droplets from falling on the radiator 1.

[0059] In this embodiment, both the first baffle 31 and the second baffle 32 are double-layered. The double-layer baffle provides an additional waterproof layer, which can more effectively prevent rain from entering the heat dissipation duct 301 under different rainfall conditions. This design can prevent water droplets from flowing into the heat dissipation duct 301 by adjusting the positions of the inner and outer plates when it is light rain or raindrops are blown up by the wind, thereby protecting the radiator 1 and the reactor from moisture. By precisely controlling the relative positions of the first inner plate 311 and the first outer plate 312, as well as the second inner plate 321 and the second outer plate 322, the airflow of the air inlet 302 and the air outlet 303 can be finely adjusted to optimize the heat dissipation effect, while preventing water droplets from entering when necessary, and increasing the strength and durability of the overall structure, especially in severe weather conditions, it can better resist the influence of the external environment on the radiator 1.

[0060] As a specific implementation method, when the air inlet 302 and the air outlet 303 are closed, the first inner plate 311, the first outer plate 312, the second inner plate 321 and the second outer plate 322 form a ring structure, and the radiator 1 is placed in the middle position of the ring structure. Since the plate has a certain height, it can prevent most of the water droplets from falling onto the radiator 1, and even if a small amount of water droplets enter, it will not affect the overall performance.

[0061] See also Figures 1 to 6 As shown, the water retaining structure 3 also includes an inner guide rail 33 and an outer guide rail 34, and the inner guide rail 33 and the outer guide rail 34 are respectively arranged on the first end surface 201, the inner guide rail 33 is located on the radial inner side of the outer guide rail 34, the first inner plate 311 and the second inner plate 321 are respectively slidably connected to the inner guide rail 33, and the first outer plate 312 and the second outer plate 322 are respectively slidably connected to the outer guide rail 34.

[0062] In this embodiment, when the first inner plate 311 and the second inner plate 321 and the first outer plate 312 and the second outer plate 322 need to move, the plates slide along the guide rails, providing precise sliding guides to ensure that the baffle can move smoothly and accurately when opening and closing the air outlet. The setting of the inner and outer guide rails 34 increases the stability of the structure, making it difficult for the baffle to shift or deform under the action of wind or other external forces, thereby ensuring the sealing and heat dissipation efficiency of the heat dissipation duct 301. When it is necessary to close the air inlet 302 and the air outlet 303 to prevent rainwater from entering, the inner guide rails 33 and the outer guide rails 34 can help the baffle close more tightly, thereby improving the sealing performance of the water retaining structure 3. In addition, the setting of the sliding guide rails can reduce the wear of the baffle during movement, extend the service life of the baffle and the guide rails, and also reduce the maintenance cost and frequency.

[0063] See also Figures 1 to 6 As shown, the water retaining structure 3 also includes a first driving member 35 and a second driving member 36. The first driving member 35 and the second driving member 36 are arranged on the first end surface 201. The first driving member 35 is connected to the first baffle 31 through a first transmission assembly, and the second driving member 36 is connected to the second baffle 32 through a second transmission assembly.

[0064] In this embodiment, the driving member can realize automatic control by electric, pneumatic or hydraulic means, so as to accurately adjust the positions of the first baffle 31 and the second baffle 32 to adapt to different environmental conditions, such as wind speed, wind direction and rainfall conditions. The automatic control improves the response speed and adjustment accuracy of the system, making the heat dissipation and waterproof performance more reliable. The first driving member 35 and the second driving member 36 respectively drive the first transmission assembly and the second transmission assembly. The first transmission assembly drives the first baffle 31 to move, and the second transmission assembly drives the second baffle 32 to move. The transmission assembly can be connected to the end of the corresponding baffle to push the baffle to move, or push the baffle to move by gear meshing.

[0065] See also Figures 1 to 6 As shown, the first transmission assembly includes a first output gear, a first transmission gear 371 and a first conveyor belt. The first output gear is arranged on the output shaft of the first driving member 35, and the first output gear is meshed with the first transmission gear 371. The first conveyor belt is sleeved on the first baffle plate 31, and the outer peripheral side of the first conveyor belt is provided with meshing teeth meshed with the first transmission gear 371; the second transmission assembly includes a second output gear, a second transmission gear 372 and a second conveyor belt. The second output gear is arranged on the output shaft of the second driving member 36, and the second output gear is meshed with the second transmission gear 372. The second conveyor belt is sleeved on the second baffle plate 32, and the outer peripheral side of the second conveyor belt is provided with meshing teeth meshed with the second transmission gear 372.

[0066] Specifically, the first driving member 35 and the second driving member 36 are motors. When the first baffle 31 needs to move, the first driving member 35 works, and the output shaft of the first driving member 35 drives the first output gear to rotate. Since the first output gear is meshed with the first transmission gear 371, the first transmission gear 371 will also rotate. The first conveyor belt is sleeved on the first baffle, and a circle of meshing teeth is provided on the outer peripheral side of the first conveyor belt. The first transmission gear 371 meshes with the meshing teeth, thereby driving the first baffle 31 to move on the first end surface 201; similarly, the movement process of the second baffle 32 is the same as the movement process of the first baffle 31, except that the output shafts of the first driving member 35 and the second driving member 36 rotate in opposite directions, so that the two baffles can approach or move away from each other. In combination with the fact that the first baffle 31 and the second baffle 32 are both semicircular, the first baffle 31 reciprocates on one side of the first end surface 201, and the second baffle 32 reciprocates on the other side of the first end surface 201, so that there is no interference between the first baffle 31 and the second baffle 32.

[0067] In this embodiment, the positions of the first outer plate 312 and the second baffle 32 can be precisely controlled by the first driving member 35 and the second driving member 36 and the corresponding transmission assembly. Since the first baffle 31 and the second baffle 32 are semicircular and reciprocate on both sides of the first end surface 201, this arrangement ensures that the two baffles do not interfere with each other, thereby ensuring the stable operation of the system.

[0068] As a specific implementation, in order to make the conveyor belt run more smoothly, each baffle in this embodiment is respectively provided with two sets of driving parts, an output gear and a transmission gear, and the two transmission gears are respectively meshed with the two ends of the conveyor belt.

[0069] As a specific embodiment, when the first baffle 31 includes a first inner plate 311 and a second outer plate 322, and the second baffle 32 includes a second inner plate 321 and a second outer plate 322, a first driving member 35 and a second driving member 36 are symmetrically arranged on the first end surface 201, respectively. The first driving member 35 drives the first outer plate 312 to move through the first transmission assembly, and the second driving member 36 drives the second outer plate 322 to move through the second transmission assembly. The end surface of the mounting plate 2 facing away from the first end surface 201 is also symmetrically arranged with the first driving member 35 and the second driving member 36. The first driving member 35 drives the first inner plate 311 to move through the first transmission assembly, and the second driving member 36 drives the second inner plate 321 to move through the second transmission assembly. Since the first driving member 35 and the second driving member 36 are symmetrically arranged, this layout can provide a balanced driving force, so that the first outer plate 312 and the first inner plate 311, the second outer plate 322 and the second inner plate 321 can move synchronously and stably, thereby ensuring the stability and reliability of the entire structure, and driving members are arranged on both end faces of the mounting plate 2, which can drive the inner and outer plates to move respectively to avoid movement interference between the plates.

[0070] See also Figures 1 to 6 As shown, the water retaining structure 3 also includes a first water drop sensor 381, a second water drop sensor 382 and a third water drop sensor 383. The first water drop sensor 381, the second water drop sensor 382 and the third water drop sensor 383 are respectively arranged on the first end face 201, the first water drop sensor 381 is located on the radial outside of the air inlet 302, the second water drop sensor 382 is located on the radial outside of the air outlet 303, and the third water drop sensor 383 is respectively arranged on the radial outside of the first baffle 31 and the second baffle 32.

[0071] Specifically, when the first water drop sensor 381, the second water drop sensor 382 and the third water drop sensor 383 are not triggered, it means that the water retaining structure 3 has little effect on the external wind duct and the wind in the external wind duct can dissipate the heat of the radiator 1, the air inlet 302 and the air outlet 303 are both open, and the applicable environment is an external environment without rain; when any one of the three water drop sensors is triggered, or two of them are triggered, it means that the water retaining structure 3 has a certain small effect on the external wind duct, but the wind entering the water retaining structure 3 can also escape through the side of the baffle. The wind in the external air duct can dissipate heat for the radiator 1. The applicable environment is in a rainy state, but the water droplets are not affected by the external air duct and rolled up. At this time, air can still enter the heat dissipation air duct 301, but the air outlet 303 needs to be closed to prevent water droplets from falling in; when all three sensors are triggered, it means that the external environment is in a rainy state and the water droplets are affected by the air duct and rolled up. The water droplets are very easy to fall onto the radiator 1. At this time, the air inlet 302 and the air outlet 303 need to be closed, and the wind slides out from both sides of the circular baffle and will not enter the water retaining structure 3.

[0072] In this embodiment, by respectively setting water drop sensors at the air inlet 302, the air outlet 303, and the radial outer sides of the first baffle 31 and the second baffle 32, it is possible to comprehensively monitor whether there are water droplets around the radiator 1, thereby more accurately judging whether the external environment is in a rainy state. The setting of the three sensors enables the system to take different countermeasures according to different external environments. For example, when it is light rain or raindrops are not affected by the wind duct and roll up, the position of the baffle can be appropriately adjusted to maintain the ventilation of the heat dissipation duct 301; and when it is heavy rain or raindrops are affected by the wind duct and roll up, the air inlet 302 and the air outlet 303 can be closed to prevent rainwater from entering. Through the water drop situation detected by the sensor, the system can intelligently adjust the position of the baffle to optimize the heat dissipation effect of the heat dissipation duct 301, while preventing rainwater from entering and protecting the radiator 1 and the reactor from moisture.

[0073] See also Figures 1 to 9 As shown, a reactor box includes a box body 5 and a radiator assembly, the radiator assembly is the above-mentioned radiator assembly, the end face of the mounting plate 2 facing away from the first end face 201 is connected to the bottom of the box body 5; the mounting plate 2 is provided with a mounting through hole 202, and the radiator 1 is embedded in the mounting through hole 202.

[0074] Specifically, the radiator 1 is usually installed at the bottom of the box body 5. Under the action of the fan 4, the wind in the external air duct blows toward the radiator 1 from the horizontal direction. When it rains in the external environment and the wind speed is high, the water droplets are rolled up and fall onto the radiator 1. In this embodiment, a water retaining structure 3 is provided on the outer peripheral side of the radiator 1 to block the water droplets blown in from the oblique direction. In order to further prevent the water droplets falling on the radiator 1 from entering the box body 5, a heat-conducting boss is provided on the top of the radiator 1. The end of the heat-conducting boss away from the radiator 1 extends into the box body 5 and is connected to the reactor in the box body 5. The radiator 1 cools the reactor by heat transfer instead of air cooling, which can further prevent the water on the radiator 1 from entering the reactor.

[0075] See also Figures 1 to 9 As shown, an air conditioner includes a reactor box, and the reactor box is the reactor box mentioned above.

[0076] See also Figures 1 to 9 As shown, a control method is used to control the above-mentioned radiator assembly, and the control method includes:

[0077] Step S1: the water retaining structure 3 has a first state, a second state and a third state;

[0078] Step S2: When the water retaining structure 3 is in the first state, the first end of the first baffle 31 and the first end of the second baffle 32 are away from each other, the second end of the first baffle 31 and the second end of the second baffle 32 are away from each other, the air inlet 302 and the air outlet 303 are both opened, and the air in the heat dissipation duct 301 flows out from the air outlet 303;

[0079] Step S3: when the water retaining structure 3 is in the second state, the first end of the first baffle 31 and the first end of the second baffle 32 are away from each other, the second end of the first baffle 31 and the second end of the second baffle 32 are connected to each other, the air inlet 302 is opened, the air outlet 303 is closed, and the air in the heat dissipation duct 301 overflows from the air inlet 302;

[0080] Step S4: When the water retaining structure 3 is in the third state, the first end of the first baffle 31 and the first end of the second baffle 32 are connected to each other, the second end of the first baffle 31 and the second end of the second baffle 32 are connected to each other, the air inlet 302 and the air outlet 303 are both closed, and the heat dissipation channel is not ventilated.

[0081] Specifically, the state of the water retaining structure 3 is adjusted according to the external environment. When the external environment is not raining, the air inlet 302 and the air outlet 303 are both opened, and the wind flowing into the heat dissipation duct 301 cools down the radiator 1, and the wind in the heat dissipation duct 301 flows out from the air outlet 303; when the external environment is raining but the water droplets are not affected by the external air duct and roll up, the air inlet 302 is opened and the air outlet 303 is closed, and the wind in the heat dissipation duct 301 overflows from the air inlet 302, and the wind entering the heat dissipation duct 301 can also cool down the radiator 1; when the external environment is raining and the water droplets are affected by the air duct and roll up, the air inlet 302 and the air outlet 303 are both closed, the heat dissipation channel is not ventilated, and the wind flows along the outer wall of the baffle.

[0082] In this embodiment, by automatically adjusting the state of the water retaining structure 3 according to the external environment (such as rainfall), it can be ensured that the radiator 1 can maintain good heat dissipation performance under various weather conditions, while preventing rainwater from entering the heat dissipation air duct 301. When it is not raining or drizzling, the water retaining structure 3 allows the heat dissipation air duct 301 to be ventilated normally, thereby achieving effective heat dissipation. Even when it is raining, by adjusting the position of the baffle, the radiator 1 can still be cooled by the wind entering the heat dissipation air duct 301, thereby maintaining the normal operating temperature of the reactor. In the case of heavy rain or raindrops being rolled up by the wind duct, the water retaining structure 3 can close the air inlet 302 and the air outlet 303 to prevent rainwater from entering the heat dissipation air duct 301 and the reactor box, thereby protecting the equipment from moisture. In the second state, by closing the air outlet 303 but keeping the air inlet 302 open, the impact of the water retaining structure 3 on the external air duct can be reduced, and the wind entering the heat dissipation air duct 301 can be used to dissipate heat, thereby improving the heat dissipation efficiency. By intelligently adjusting the state of the water retaining structure 3 under different weather conditions, equipment damage caused by overheating or moisture intrusion can be reduced, thereby extending the service life of the radiator 1 and the reactor.

[0083] When the water retaining structure 3 further includes a first water drop sensor 381, a second water drop sensor 382 and a third water drop sensor 383, the control method further includes:

[0084] Step S21: when the first water drop sensor 381, the second water drop sensor 382 and the third water drop sensor 383 are not triggered, the water retaining structure 3 is in the first state;

[0085] Step S22: when the first water drop sensor 381 is triggered, or the second water drop sensor 382 is triggered, or the third water drop sensor 383 is triggered, the water retaining structure 3 is in the second state;

[0086] Step S23: When the first water drop sensor 381, the second water drop sensor 382, ​​and the third water drop sensor 383 are all triggered, the water retaining structure 3 is in the third state.

[0087] It is worth noting that in step S22, when the first water drop sensor 381 and the second water drop sensor 382 are triggered, but the third water drop sensor 383 is not triggered, the water retaining structure 3 at this time still remains in the second state, or when only two of the sensors are triggered, the water retaining structure 3 remains in the second state, and only when all three sensors are triggered, the water retaining structure 3 switches to the third state.

[0088] Specifically, when the first water drop sensor 381, the second water drop sensor 382 and the third water drop sensor 383 are not triggered, it means that the water retaining structure 3 has little effect on the external air duct and the wind in the external air duct can dissipate heat to the radiator 1, the air inlet 302 and the air outlet 303 are both open, and the applicable environment is an external environment without rain; when any one of the three water drop sensors is triggered, it means that the water retaining structure 3 has a certain small effect on the external air duct, but the wind entering the water retaining structure 3 can also dissipate through the side of the baffle, and the external air duct The wind inside can dissipate heat for the radiator 1. The applicable environment is a rainy state, but the water droplets are not affected by the external wind duct and rolled up. At this time, air can still enter the heat dissipation duct 301, but the air outlet 303 needs to be closed to prevent water droplets from falling in; when all three sensors are triggered, it means that the external environment is a rainy state and the water droplets are affected by the wind duct and rolled up. The water droplets are very easy to fall onto the radiator 1. At this time, the air inlet 302 and the air outlet 303 need to be closed, and the wind slides out from both sides of the circular baffle and will not enter the water retaining structure 3.

[0089] In this embodiment, by respectively setting water drop sensors at the air inlet 302, the air outlet 303, and the radial outer sides of the first baffle 31 and the second baffle 32, it is possible to comprehensively monitor whether there are water droplets around the radiator 1, thereby more accurately judging whether the external environment is in a rainy state. The setting of the three sensors enables the system to take different countermeasures according to different external environments. For example, when it is light rain or raindrops are not affected by the wind duct and roll up, the position of the baffle can be appropriately adjusted to maintain the ventilation of the heat dissipation duct 301; and when it is heavy rain or raindrops are affected by the wind duct and roll up, the air inlet 302 and the air outlet 303 can be closed to prevent rainwater from entering. Through the water drop situation detected by the sensor, the system can intelligently adjust the position of the baffle to optimize the heat dissipation effect of the heat dissipation duct 301, while preventing rainwater from entering and protecting the radiator 1 and the reactor from moisture.

[0090] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0091] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A radiator assembly, characterized in that: include: Radiator (1), mounting plate (2) and water retaining structure (3); The mounting plate (2) has a first end surface (201), and the heat sink (1) is arranged on the first end surface (201); The water retaining structure (3) comprises a first baffle (31) and a second baffle (32), the first baffle (31) and the second baffle (32) being movably arranged on the first end surface (201), a heat dissipation duct (301) being formed between the first baffle (31) and the second baffle (32), and the radiator (1) being located in the heat dissipation duct (301); The heat dissipation air duct (301) has an air inlet (302) and an air outlet (303); the first end of the first baffle (31) and the first end of the second baffle (32) are connected to or separated from each other to close or open the air inlet (302); the second end of the first baffle (31) and the second end of the second baffle (32) are connected to or separated from each other to close or open the air outlet (303).

2. The heat sink assembly according to claim 1, characterized in that The first baffle plate (31) and the second baffle plate (32) are arc-shaped, and the first baffle plate (31) and the second baffle plate (32) are respectively movably arranged along the circumference of the first end surface (201).

3. The heat sink assembly according to claim 2, characterized in that The first baffle (31) comprises a first inner plate (311) and a first outer plate (312), the first inner plate (311) and the first outer plate (312) being movably arranged on the first end surface (201), the first inner plate (311) being located radially inward of the first outer plate (312), the first end of the first inner plate (311) and the first end of the first outer plate (312) being arranged opposite to each other, and the second end of the first inner plate (311) and the second end of the first outer plate (312) being arranged to move in opposite directions; the second end of the first outer plate (312) and the first end of the second baffle (32) are connected to or away from each other to close or open the air inlet (302), and the second end of the first inner plate (311) and the second end of the second baffle (32) are connected to or away from each other to close or open the air outlet (303).

4. The heat sink assembly according to claim 3, characterized in that The second baffle (32) comprises a second inner plate (321) and a second outer plate (322), the second inner plate (321) and the second outer plate (322) are movably arranged on the first end surface (201), the second inner plate (321) is located radially inward of the second outer plate (322), the first end of the second inner plate (321) and the first end of the second outer plate (322) are arranged opposite to each other, and the second end of the second inner plate (321) and the second end of the second outer plate (322) are arranged to move in opposite directions; The second end of the first outer panel (312) and the second end of the second inner panel (321) are connected to or away from each other to close or open the air inlet (302); the second end of the first inner panel (311) and the second end of the second outer panel (322) are connected to or away from each other to close or open the air outlet (303).

5. The heat sink assembly according to claim 4, characterized in that The water retaining structure (3) further comprises an inner guide rail (33) and an outer guide rail (34); the inner guide rail (33) and the outer guide rail (34) are respectively arranged on the first end surface (201); the inner guide rail (33) is located radially inward of the outer guide rail (34); the first inner plate (311) and the second inner plate (321) are respectively slidably connected to the inner guide rail (33); and the first outer plate (312) and the second outer plate (322) are respectively slidably connected to the outer guide rail (34).

6. The heat sink assembly according to claim 1, wherein: The water retaining structure (3) further comprises a first driving member (35) and a second driving member (36); the first driving member (35) and the second driving member (36) are arranged on the first end surface (201); the first driving member (35) is connected to the first baffle (31) via a first transmission assembly; and the second driving member (36) is connected to the second baffle (32) via a second transmission assembly.

7. The heat sink assembly according to claim 6, characterized in that The first transmission assembly comprises a first output gear, a first transmission gear (371) and a first conveyor belt; the first output gear is arranged on the output shaft of the first driving member (35); the first output gear meshes with the first transmission gear (371); the first conveyor belt is sleeved on the first baffle plate (31); and meshing teeth meshing with the first transmission gear (371) are arranged on the outer peripheral side of the first conveyor belt; The second transmission assembly comprises a second output gear, a second transmission gear (372) and a second conveyor belt. The second output gear is arranged on the output shaft of the second driving member (36). The second output gear meshes with the second transmission gear (372). The second conveyor belt is sleeved on the second baffle plate (32). The outer peripheral side of the second conveyor belt is provided with meshing teeth meshing with the second transmission gear (372).

8. The radiator assembly according to any one of claims 1 to 7, characterized in that: The water retaining structure (3) further comprises a first water drop sensor (381), a second water drop sensor (382) and a third water drop sensor (383); the first water drop sensor (381), the second water drop sensor (382) and the third water drop sensor (383) are respectively arranged on the first end surface (201); the first water drop sensor (381) is located radially outside the air inlet (302); the second water drop sensor (382) is located radially outside the air outlet (303); and the third water drop sensor (383) is respectively arranged radially outside the first baffle (31) and the second baffle (32).

9. A reactor box, comprising a box body (5) and a heat sink assembly, characterized in that: The radiator assembly is the radiator assembly according to any one of claims 1 to 8, the end surface of the mounting plate (2) facing away from the first end surface (201) is connected to the bottom of the box body (5); the mounting plate (2) is provided with a mounting through hole (202), and the radiator (1) is embedded in the mounting through hole (202).

10. An air conditioner, comprising a reactor box, characterized in that: The reactor box is the reactor box according to claim 9.

11. A control method, characterized in that: The control method is used to control the radiator assembly according to any one of claims 1 to 8, and the control method comprises: The water retaining structure (3) has a first state, a second state and a third state; When the water retaining structure (3) is in the first state, the first end of the first baffle (31) and the first end of the second baffle (32) are away from each other, the second end of the first baffle (31) and the second end of the second baffle (32) are away from each other, the air inlet (302) and the air outlet (303) are both open, and the air in the heat dissipation air duct (301) flows out from the air outlet (303); When the water retaining structure (3) is in the second state, the first end of the first baffle (31) and the first end of the second baffle (32) are away from each other, the second end of the first baffle (31) and the second end of the second baffle (32) are connected to each other, the air inlet (302) is opened, the air outlet (303) is closed, and the air in the heat dissipation air duct (301) overflows from the air inlet (302); When the water retaining structure (3) is in the third state, the first end of the first baffle (31) and the first end of the second baffle (32) are connected to each other, the second end of the first baffle (31) and the second end of the second baffle (32) are connected to each other, the air inlet (302) and the air outlet (303) are both closed, and the heat dissipation channel (301) is not ventilated.

12. The control method according to claim 11, characterized in that: When the water retaining structure (3) further comprises a first water drop sensor (381), a second water drop sensor (382) and a third water drop sensor (383), the control method further comprises: When the first water drop sensor (381), the second water drop sensor (382) and the third water drop sensor (383) are not triggered, the water retaining structure (3) is in a first state; When the first water drop sensor (381) is triggered, or when the second water drop sensor (382) is triggered, or when the third water drop sensor (383) is triggered, the water retaining structure (3) is in the second state; When the first water drop sensor (381), the second water drop sensor (382), and the third water drop sensor (383) are all triggered, the water retaining structure (3) is in a third state.

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