Cooling fan and control method thereof

Abstract

The application provides a cold fan, comprising a shell, a support arranged in the shell, and a water tank connected with the support through a water pumping structure, wherein a water spraying structure and a wet curtain body are arranged on the support, the water pumping structure pumps water in the water tank to the support, and the water is sprayed through the water spraying structure to wet the wet curtain body. The application also provides a control method of the cold fan. The cold fan and the control method of the cold fan have the following advantages: the first wet curtain and the second wet curtain are wetted through the built-in nozzle arranged on the support, multi-directional water supply is realized, the wetting efficiency is improved, and the phenomenon of water splashing and water marks appearing at the air outlet is avoided. The target gear is matched with the mist output of the nozzle, and the wetting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household appliances, and particularly relates to a cooling fan and a control method of the cooling fan. BACKGROUND

[0002] The cooling fan draws water to the wet curtain through the water pump in the humidification mode, the main motor drives the fan wheel to rotate, air is cooled, filtered and carries water vapor through the wet curtain, and is blown out from the air outlet, so that the air is humidified and purified.

[0003] In the prior art, the water flow of the wet curtain is too large and the rotation speed of the fan wheel is too large during use, so that the water splashing phenomenon occurs due to the excessive water flow, and the water mark appears at the air outlet due to the excessive air flow, which affects the user's use experience.

[0004] Therefore, it is urgent to design a cooling fan to avoid the water splashing phenomenon and the water mark at the air outlet under the conditions of large water flow and large air flow rotation speed. SUMMARY

[0005] The main purpose of the present application is to provide a cooling fan and a control method of the cooling fan to solve the problems of water splashing and water mark at the air outlet in the process of rapid cooling and humidification in the existing cooling fan.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the cooling fan and the control method of the cooling fan of the present application is as follows:

[0007] The present application provides a cooling fan, which comprises a shell, a support arranged in the shell, a water tank connected to the support through a water pumping structure, a water spraying structure and a wet curtain body arranged on the support, the water pumping structure pumping water in the water tank into the support, and the water spraying structure spraying the water to humidify the wet curtain body.

[0008] As a preferred embodiment provided by the present application, a containing groove is arranged on the side wall of the shell, and the support is inserted into the containing groove to achieve the insertion and fixation of the support and the shell.

[0009] As a preferred embodiment provided by the present application, the support has a hollow structure, the wet curtain body is arranged on the support, and the water spraying structure sprays water to the hollow structure to form a water curtain, thereby humidifying the wet curtain body.

[0010] As a preferred embodiment provided by the present application, the support is a square frame, the water spraying structure is arranged on the side wall of the square frame, and the water spraying structure sprays water in the support to the wet curtain body.

[0011] As a preferred embodiment provided by the present application, the water spraying structure comprises a plurality of nozzles arranged on the support.

[0012] As a preferred embodiment provided by the present application, the plurality of nozzles are arranged on the top and / or the sidewall of the support.

[0013] As a preferred embodiment provided by the present application, the wet curtain body comprises a first wet curtain and a second wet curtain, which are arranged on opposite sides of the support, respectively, so that the water sprayed by the nozzles on the support can wet the first wet curtain and the second wet curtain arranged on the opposite sides.

[0014] As a preferred embodiment provided by the present application, the water pumping structure comprises a water pump arranged in the water tank, the water pump is connected with the support, and the water pump pumps the water in the water tank into the support.

[0015] As a preferred embodiment provided by the present application, the bottom of the shell is provided with an angle sensor for sensing the inclination angle of the shell.

[0016] As a preferred embodiment provided by the present application, a fan assembly is arranged in the shell, and the fan assembly is arranged opposite to the wet curtain body.

[0017] The present application further provides a control method of the cold fan, which comprises the following steps:

[0018] obtaining an air humidity parameter of an external environment;

[0019] matching a target working gear of the cold fan according to the air humidity parameter;

[0020] determining a humidification amount of the cold fan according to the target working gear;

[0021] controlling the cold fan to humidify the external environment according to the determined humidification amount of the cold fan.

[0022] As a preferred embodiment provided by the present application, the matching of the target working gear of the cold fan according to the air humidity parameter comprises the following steps:

[0023] dividing the air humidity of the external environment into grades according to the air humidity parameter;

[0024] matching the target working gear of the cold fan according to the air humidity grades.

[0025] As a preferred embodiment provided by the present application, the determination of the humidification amount of the cold fan according to the target working gear comprises the following steps:

[0026] dividing the humidification amount of the cold fan into grades according to the target gear.

[0027] As a preferred embodiment provided by the present application, the method further comprises the following step: controlling the plurality of nozzles to be opened alternately or all at the same time according to the plurality of target gears.

[0028] The cold fan and the control method of the cold fan provided by the present application have the following advantages:

[0029] (1) By setting the built-in nozzle on the support, the first wet curtain and the second wet curtain are humidified, multi-directional water supply is realized, the wetting efficiency is accelerated, and the phenomenon of water splashing and water marks appearing at the air outlet is avoided.

[0030] (2) By matching the target gear with the mist output of the nozzle, the wetting efficiency is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The overall structure schematic diagram of the cold fan is provided for the present application;

[0032] Figure 2 The structure schematic diagram of the wet curtain assembly of the cold fan is provided for the present application Figure 1 ;

[0033] Figure 3 The structure schematic diagram of the wet curtain assembly of the cold fan is provided for the present application Figure 2 ;

[0034] Figure 4 The flowchart of the control method of the cold fan is provided for the present application.

[0035] MARK DESCRIPTION IN THE FIGURE:

[0036] 1, shell; 2, base; 3, support; 31, nozzle; 4, first wet curtain; 5, second wet curtain; 6, water pump; 7, angle sensor. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict.

[0040] As Figure 1 The present application provides a cold fan, which comprises a shell 1, the bottom of the shell 1 is provided with a base 2, and the base 2 is provided with a movable moving structure, so that the cold fan can be moved to any position. The cold fan comprises a wet curtain body, one side of the wet curtain body is provided with a fan, and the wet curtain body blows the humidified air to the external environment to humidify the external air environment. Generally, a liquid distributor is arranged above the wet curtain body, which humidifies the wet curtain body to humidify the air. However, in actual use, if the indoor environment is relatively dry, the user needs to open a larger gear of humidification amount, which will cause water splashing and water marks at the air outlet, affecting the user experience.

[0041] Further, the cold fan provided by the present application is provided with a water tank at the bottom of the shell 1, the water tank is provided with a water pumping structure, the shell 1 is provided with a support 3, the support 3 is provided with a water spraying structure, and the wet curtain body is arranged on the support 3. The water pumping structure pumps the water in the water tank to the support 3, and the water spraying structure sprays the water to humidify the wet curtain body. The water in the water tank is pumped to the support 3 by the water pumping structure, so that the water spraying structure arranged on the support 3 humidifies the wet curtain body, avoiding the phenomenon of water splashing due to excessive water amount. The water at the bottom of the water tank is pumped to the wet curtain body on the support 3, and the air is humidified by humidifying the wet curtain body.

[0042] Further, the water pumping structure comprises a water pump 6, the water pump 6 and the support 3 are connected through a connecting pipeline, the water pump 6 pumps the water in the water tank to the support 3 through the connecting pipeline, so that the support 3 humidifies the wet curtain body through the water spraying structure. Of course, it can be understood that the water pumping structure can also be provided as other structures, the connecting pipeline can extend to the water spraying structure inside the support 3, and the water pumping structure sprays the water in the water tank through the water spraying structure. As other embodiments, the water pumping structure and the support 3 are connected through the connecting pipeline, the water pumping structure pumps the water to the support 3, the support 3 can be filled with water, and the water spraying structure is provided with a control structure, when the water spraying structure needs to humidify the wet curtain body, the control structure opens the water spraying structure, so that the water pumping structure sprays the water in the water tank through the water spraying structure. The above two embodiments illustrate the connection mode of the water pumping structure, the support 3 and the water spraying structure, and any embodiment is within the protection scope of the present application.

[0043] Further, the side wall of the shell 1 is provided with a containing groove, the support 3 is inserted into the containing groove, so that the support 3 and the shell 1 are inserted and fixed. The support 3 has a hollow structure, the support 3 is provided with the wet curtain body, and the water spraying structure sprays water to the hollow structure to form a water curtain, thereby realizing humidification of the wet curtain body. The support 3 is a square frame, the side wall of the square frame is provided with the water spraying structure, and the water spraying structure sprays water in the support 3 to the wet curtain body.

[0044] Specifically, the shell 1 is provided with a mounting portion, the support 3 is fixedly arranged on the mounting portion, and the side wall of the shell 1 is provided with the mounting portion, so that the wet curtain body is arranged close to the side wall of the shell 1 or partially exposed to the outside of the shell 1, which can better contact with air, thereby realizing humidification of the air.

[0045] Further, the support 3 and the wet curtain body can be provided as an integral molding structure, or can be provided as fixed connection of the support 3 and the wet curtain body, as long as the water spraying structure arranged on the support 3 can humidify the wet curtain body.

[0046] As a preferred embodiment, the support 3 is provided as a square frame, the square frame is provided with six hollow surface structures, the wet curtain body is arranged along the length direction of the square frame, so that the wet curtain body is arranged on the two planes with the largest area in the square frame, and the two planes are oppositely arranged. The wet curtain body comprises a first wet curtain 4 and a second wet curtain 5, the first wet curtain 4 and the second wet curtain 5 are arranged on the two oppositely arranged planes respectively, so that the opposite two planes of the support 3 are fixedly connected with the first wet curtain 4 and the second wet curtain 5. The fixing mode of the first wet curtain 4 and the second wet curtain 5 to the support 3 can be provided as gluing or other fixing modes, as long as the first wet curtain 4 and the second wet curtain 5 can be fixed on the support 3.

[0047] Of course, it can be understood that the first wet curtain 4 and the second wet curtain 5 can also be provided as an integrated structure, or can be provided as an organ structure similar to the organ structure in the machine tool in the prior art, the hollow structure of the wet curtain body filling the support 3, the water spraying structure provided on the support 3 humidifies the wet curtain body, and the wet curtain body can maximize the absorption of moisture.

[0048] The embodiments provided by the present application are only taken as an example that the first wet curtain 4 and the second wet curtain 5 are arranged on the opposite sides of the support 3, and the water spraying structure is arranged between the first wet curtain 4 and the second wet curtain 5. Of course, the water spraying structure can be arranged around the edge of the first wet curtain 4 and the second wet curtain 5, so that the water spraying structure arranged between the first wet curtain 4 and the second wet curtain 5 forms a water curtain between the first wet curtain 4 and the second wet curtain 5. The water curtain is a barrier formed by the water mist sprayed by the nozzle 31 in the tunnel for purifying air, and is a facility for dust removal or explosion isolation. The first wet curtain 4 and the second wet curtain 5 are humidified by the water curtain with large water flow. The air outside which needs to be humidified is first humidified by the first wet curtain 4, and then the humidified air is secondarily humidified by the water curtain with large water flow, and then the air after the secondary humidification is thirdly humidified by the second wet curtain 5, so that the dry air is fully humidified, and under the premise of ensuring the original humidification amount, the energy is further saved. Under the condition of the same fan speed, the dry air is maximally humidified, and the air humidity is improved. For example, in the prior art, the external air needs to be humidified to 50% humidity, at this time, the fan speed needs to be increased, but at this time, the water mark appears at the air outlet due to the operation of the fan with too large speed. However, the embodiments provided by the present application can realize the humidification of the wet curtain body with large flow by the smaller fan speed, because the air is humidified three times.

[0049] As shown in Figure 2 and Figure 3 , the water spraying structure provided on the support 3 includes a plurality of nozzles 31, and the plurality of nozzles 31 are arranged on the support 3. Of course, it can be understood that the number, arrangement position and arrangement mode of the nozzles 31 can be designed differently, so that the water spraying structure can satisfy the effect of quickly humidifying and cooling the wet curtain body. The water spraying structure will be described in detail below.

[0050] As a preferred embodiment, the plurality of nozzles 31 are arranged on the top and / or side wall of the support 3. The plurality of nozzles 31 can be arranged on the top of the support 3, or can be arranged on the side wall of the support 3. At the same time, the plurality of nozzles 31 can be arranged on the top of the support 3 and the side wall of the support 3. According to different humidification levels used by the user, the nozzles 31 can be adjusted to different degrees.

[0051] Further, the top and side wall of the support 3 are respectively provided with nozzles 31, and the water in the water tank is pumped into the support 3 and sprayed through the nozzles 31. Of course, it can be understood that the support 3 and the nozzles 31 are connected by threads, and can also be provided in other fixing modes, or the nozzles 31 and the support 3 are formed as an integral structure.

[0052] Of course, it can also be understood that the nozzles 31 provided on the support 3 can also be provided with movable baffles, and the opening and closing of each nozzle 31 and the cross-sectional area of the opened nozzle 31 are different, that is, the water flow is different, so that the required humidification of the external air can be controlled more accurately, and the energy can be saved, and the waste of energy can be avoided.

[0053] Further, a plurality of nozzles 31 are arranged at equal intervals on the side wall of the support 3, so that the nozzles 31 arranged on the top and opposite sides form a water curtain on the support 3, and the setting position of the nozzles 31 and the water flow size determine the humidity of the humidified air. Through accurate control, the different use requirements of the user can be met, and the electric energy can be saved to the maximum extent. Through the first wet curtain 4 and the second wet curtain 5 arranged on the support 3 and the water curtain formed between the first wet curtain 4 and the second wet curtain 5, the external air can be quickly cooled and humidified, and the cold fan can also be rotated at the maximum wind speed, and the phenomenon of water marks appearing at the air outlet and the phenomenon of water splashing can be avoided.

[0054] Further, the bottom of the shell 1 is provided with an angle sensor 7 for detecting the inclination angle of the shell 1. The water flow is prevented from overflowing due to the too large inclination angle. Once the inclination angle of the shell 1 is too large, the pump head of the water pump 6 stops water supply until the normal working angle range is restored. During the movement of the mobile base 2 or the carrying of the cold fan, the problem of tilting the shell 1 is avoided, and the angle sensor 7 is arranged to remind the user. If the detected inclination angle does not meet the requirement, the water pump 6 needs to be stopped to supply water.

[0055] The embodiment provided by the application sends water into the support 3 through the water pump 6, and utilizes the plurality of nozzles 31 arranged on the left and right sides and the top of the support 3. The water is atomized uniformly, a large amount of water vapor is arranged in front of and behind the first wet curtain 4 and the second wet curtain 5 arranged on the support 3. In this way, the phenomenon of water splashing can be avoided when a large amount of water supply is used to wet the wet curtain body, and the uniformity and consistency of wetting of the wet curtain body can be maintained. At the same time, the phenomenon of water marks appearing at the air outlet can be avoided when a large amount of air is discharged, and the size of the water mist is matched with the fan gear.

[0056] The embodiment provided by the application realizes the process that the first wet curtain 4 and the second wet curtain 5 are respectively embedded into the front and rear ends of the support 3 which can supply water and has nozzles 31 inside, the inside of the support 3 is filled with water by the water pump 6, the size of the water mist sprayed by each nozzle 31 is controlled by the controller according to the current gear, for example, when one gear of wind is opened, the amount of water mist sprayed by the nozzle 31 is 20% of the total amount of water mist sprayed by the nozzle 31, when two gears of wind are opened, the amount of water mist sprayed by the nozzle 31 is 40% of the total amount of water mist sprayed by the nozzle 31, and so on, and the amount of water mist sprayed by the nozzle 31 is increased gear by gear; when the storm mode is used, the amount of water mist sprayed by the nozzle 31 is 100%, the water mist wall is formed between the support 3 and the wet curtain embedded in front and rear of the support 3, and the water mist wall is formed again to reduce the temperature, the water mist wall is formed by the nozzles 31 on the top and the left and right sides of the support 3, the existence of the first wet curtain 4, the second wet curtain 5 and the water mist wall increases the total area of temperature reduction, the air enters the fan and is cooled three times in sequence, and then is sent out from the air outlet, so that the cooling effect is greatly improved, and when a large amount of water is supplied (the storm mode), the water marks and water splashing phenomenon do not occur at the air outlet and the air inlet, because the water is in the form of water mist, the water mist can be uniformly sprayed, and the first wet curtain 4 and the second wet curtain 5 are used to shield the water mist, so that the problem is avoided.

[0057] The air cooler and the control method of the air cooler provided by the application have the following advantages: the nozzles 31 are arranged on the support 3, the first wet curtain 4 and the second wet curtain 5 are humidified, multi-directional water supply is realized, the wetting efficiency is improved, and the water marks and water splashing phenomenon are avoided. The target gear is matched with the amount of water mist sprayed by the nozzles 31, and the wetting efficiency is improved.

[0058] For the method embodiments, in order to simply describe, all are described as a series of action combinations, but those skilled in the art should know that the embodiments of the application are not limited by the action sequence described, because according to the embodiments of the application, certain steps can be performed in other sequences or at the same time. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions involved are not necessarily necessary for the embodiments of the application.

[0059] Figure 4 A flowchart of a control method of an air purifier provided by the embodiment of the application is shown in FIG. 1. Figure 4 The control method of the air purifier of the application is described. The control method of the air purifier of the application includes the following steps:

[0060] S1, acquiring an air humidity parameter of an external environment;

[0061] In the embodiment of the present application, the air humidity parameter refers to the ratio of the vapor pressure of water in the air to the saturated vapor pressure of water under the same temperature and pressure. The absolute humidity of the wet air is the ratio of the maximum absolute humidity that can be achieved under the same temperature. It can also be expressed as the ratio of the water vapor partial pressure in the wet air to the saturated pressure of water under the same temperature.

[0062] S2, matching the target working gear of the cold fan according to the air humidity parameter;

[0063] In the embodiment of the present application, the air humidity of the external environment is classified according to the air humidity parameter; and the target working gear of the cold fan is matched according to the air humidity classification.

[0064] Specifically, classifying the air quality of the target area according to the air humidity parameter includes: if the air humidity parameter is higher than a preset first air quality parameter threshold, the air humidity parameter of the current target area is classified as level one; if the air humidity parameter is less than or equal to the first air humidity parameter threshold and higher than a preset second air humidity threshold, the air quality of the current target area is classified as level two; and if the air humidity parameter is less than or equal to the second air humidity parameter threshold, the air humidity of the current target area is classified as level three. The first air humidity parameter threshold is higher than the second air humidity parameter threshold.

[0065] It should be noted that when the air humidity is classified as level one, it proves that the air humidity of the current target area is very poor, when the air humidity is classified as level two, it proves that the air humidity of the current target area is poor, and when the air humidity is classified as level three, it proves that the air humidity of the current target area is excellent. It can be understood that the air humidity can be classified into more levels according to the needs to improve the user experience.

[0066] S3, determining the humidification amount of the cold fan according to the target working gear;

[0067] In the embodiment of the present application, when the target gear is a low gear, the mist amount of the nozzle 31 is controlled to be 20% of the total humidification amount;

[0068] When the target gear is a medium gear, the mist amount of the nozzle 31 is controlled to be 40% of the total humidification amount;

[0069] When the target gear is a high gear, the mist amount of the nozzle 31 is controlled to be 100% of the total humidification amount.

[0070] It should be noted that the air humidity can be classified into more levels according to the needs to improve the user experience. Precise control can also be performed, and different levels are classified to control the humidification amount of the nozzle 31.

[0071] S4, controlling the cooling fan to humidify the external environment according to the determined humidification amount of the cooling fan;

[0072] In this way, the wet curtain body is not only soaked with water to accelerate cooling during use, but also a water mist "wall" exists in the bracket 3 and the first wet curtain 4 and the second wet curtain 5 embedded in front and back, which further cools down. The water mist wall is realized by the upper and left and right side nozzles in the bracket 3, and the existence of the first wet curtain 4 and the second wet curtain 5 and the water mist "wall" increases the total area of cooling. After the air passes through the fan for three times, it is sent out from the air outlet, which greatly improves the cooling effect. According to the required air humidity in the external environment, the speed of the fan assembly and the water output of the nozzle 31 are controlled.

[0073] In the embodiment, the modules / units of the cooling fan control device integrated in the form of software function units and sold or used as independent products can be stored in a computer readable storage medium. Based on this understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer readable storage medium. When the processor executes the computer program, the steps of each method embodiment can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content included in the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electric carrier signals and telecommunication signals.

[0074] The cooling fan provided by the embodiment of the present application includes a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps in each of the above-mentioned control method embodiments for the washing machine are implemented, such as S1-S4 shown in the figure. Figure 4 Alternatively, when the processor executes the computer program, the functions of each module / unit in the above-mentioned cooling fan embodiment are implemented.

[0075] For example, the computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present application. The one or more modules / units can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the control device for precise water feeding of the dishwasher.

[0076] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor or the like, which is the control center of the dishwasher and connects various parts of the dishwasher through various interfaces and lines.

[0077] The memory can be used to store the computer program and / or modules, and the processor realizes various functions of the dishwasher by running or executing the computer program and / or modules stored in the memory, and calling data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required for a function (such as a sound playing function, an image playing function, etc.), etc.; and the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state memory devices.

[0078] Those skilled in the art can understand that although some embodiments herein include certain features rather than other features included in other embodiments, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0079] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cold fan, characterized by, The shell is internally provided with a support, the support and the water tank are connected through a water pumping structure, the support is provided with a water spraying structure and a wet curtain body, the water pumping structure pumps water in the water tank to the support, the water is sprayed through the water spraying structure to humidify the wet curtain body; The support has a hollow structure, the support is provided with the wet curtain body, the water spraying structure sprays water to the hollow structure to form a water curtain, thereby humidifying the wet curtain body; The support is a square frame, the side wall of the square frame is provided with the water spraying structure, the water spraying structure sprays water in the support to the wet curtain body; The water spraying structure comprises a plurality of nozzles, and the plurality of nozzles are arranged on the support; The plurality of nozzles are arranged on the top and / or the side wall of the support; The wet curtain body comprises a first wet curtain and a second wet curtain, the first wet curtain and the second wet curtain are arranged on opposite sides of the support respectively, so that the water sprayed by the nozzles on the support can wet the first wet curtain and the second wet curtain arranged on the two sides.

2. The cold fan according to claim 1, characterized in that, The side wall of the shell is provided with a receiving groove, the support is inserted into the receiving groove, so that the support and the shell are inserted and fixed.

3. The cold fan according to claim 1, wherein The water pumping structure comprises a water pump, the water pump is arranged in the water tank, the water pump is connected with the support, and the water pump pumps water in the water tank to the support.

4. The cold fan according to claim 1, wherein The bottom of the shell is provided with an angle sensor for detecting the inclination angle of the shell.

5. The cold fan according to claim 1, wherein The shell is internally provided with a fan assembly, and the fan assembly and the wet curtain body are oppositely arranged.

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