Multifunctional circulating fan

Abstract

The multifunctional circulating fan comprises a base, a rotating shell is rotationally installed in the middle of the base, a driving part is arranged at the bottom of the rotating shell and used for driving the rotating shell to rotate, and the two sides of the rotating shell are fixedly connected with a first supporting frame and a second supporting frame respectively; the cylindrical shell is arranged between the first supporting frame and the second supporting frame; the smoke sensor can automatically detect smoke dust or tobacco burning smell in air, the exhaust function is triggered, and the indoor air quality is improved; the gyroscope is matched with the magnetometer, so that the fan can automatically adjust the orientation of an air outlet, and the most effective exhaust effect is ensured; the heating part adopts the design of the electric heating plate and the heat conducting fins, so that the heat exchange efficiency is improved, and the fan can quickly blow out hot air; the dehumidification part effectively removes moisture in the air through a multi-layer spiral pipe and a cooling liquid circulation system, and meanwhile the refrigeration function can be achieved through a semiconductor refrigeration piece.

Description

Technical Field

[0001] The invention relates to the technical field of circulating fans, in particular to a multifunctional circulating fan. Background Art

[0002] A circulation fan, also known as an air circulation fan, is a household appliance that can stir the indoor air to form a convection circulation. The working principle of a circulation fan is similar to that of a turbine engine on an airplane. Its core components include a drive motor, a turbo fan, a guide grille, and a cylindrical shell. The motor drives the turbo fan to rotate at high speed, generating strong wind. The wind is guided by the guide grille and the cylindrical shell to blow out in a spiral shape, forming a directional columnar wind. Most existing circulation fans are used for blowing alone, and the temperature of the blowing air cannot be adjusted, and they cannot be adjusted in multiple ways according to needs. Summary of the invention

[0003] The object of the present invention is to provide a multifunctional circulation fan to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a multifunctional circulation fan, comprising:

[0005] A base, a rotating shell is rotatably mounted in the middle of the base, a driving part is provided at the bottom of the rotating shell for driving the rotating shell to rotate, and a first supporting frame and a second supporting frame are respectively fixedly connected on both sides of the rotating shell;

[0006] A cylindrical shell, the cylindrical shell is placed between the first support frame and the second support frame, a turbo fan is arranged inside the cylindrical shell, a metal cover with a conical structure is arranged inside the cylindrical shell in the air outlet direction of the cylindrical shell, and a heating part is arranged on the outer side of the metal cover for heating the blown air;

[0007] The dehumidification part is placed at one end of the cylindrical shell where air enters. The dehumidification part includes a spiral tube with coolant flowing in a spiral ring, which is used to dehumidify or cool the air. A cooling part for circulating and cooling the coolant is provided inside the base.

[0008] Preferably, it also includes an exhaust detection unit, which includes a smoke sensor fixedly connected to the top of the base for detecting smoke and tobacco burning smell. The driving unit is a rotating motor fixedly connected to the inside of the base for driving the rotating shell to rotate. A gyroscope is fixedly connected to the top of the cylindrical shell for cooperating with the magnetometer of the window to adjust the air outlet position of the cylindrical shell. When detecting indoor smoke, the cylindrical shell automatically rotates toward the window for strong exhaust.

[0009] Preferably, the air outlet of the cylindrical shell is provided with an air outlet guide grille, the air inlet of the cylindrical shell is provided with an air inlet guide grille made of metal material, and a support cover is detachably installed at the bottom of the base for lowering the center of gravity of the equipment and cooperating with the air outlet guide grille to form a storage table.

[0010] Preferably, the cylindrical shell is rotatably connected to the No. 2 support frame, one end of the cylindrical shell is inserted into the No. 2 support frame and fixedly connected with a positioning plate, one side of the No. 2 support frame is threadedly connected with a positioning screw, and the middle part of the positioning plate is provided with a positioning hole that cooperates with the positioning screw for fixing the orientation angle of the air outlet guide grille.

[0011] Preferably, the heating part comprises electric heating plates equidistantly distributed on the outside of the metal cover, a heat conducting plate is fixedly connected to the inner wall of the metal cover at the position corresponding to the electric heating plate, and a plurality of V-shaped heat conducting fins are equidistantly fixedly connected to the outside of the heat conducting plate.

[0012] Preferably, a drive motor is fixedly connected to the interior of the cylindrical shell, and an output end of the drive motor is fixedly connected to the turbofan.

[0013] Preferably, the dehumidification unit also includes a return pipe and a water inlet pipe fixedly connected to the inner side of the air inlet guide grille, the spiral pipe is equidistantly arranged between the return pipe and the water inlet pipe, the spiral pipe is arranged corresponding to the mesh of the air inlet guide grille, the water inlet pipe is connected to a cold water box through a water pipe, the cold water box is installed inside the No. 1 support frame, a semiconductor refrigeration sheet is fixedly connected to the outer side of the cold water box, and the cooling end of the semiconductor refrigeration sheet is in contact with the cold water box.

[0014] Preferably, the heating end of the semiconductor refrigeration plate is fixedly connected to a cooling fan, a cooling air duct is provided inside the No. 1 support frame at a position corresponding to the cooling fan, and a cooling hole corresponding to the cooling air duct is provided at the bottom of the No. 1 support frame.

[0015] Preferably, a coolant tank is fixedly connected to the inside of the top base of the base, a small water pump is fixedly connected to one side of the coolant tank, the input end of the small water pump is connected to the coolant tank through a connecting water pipe, the output end of the small water pump is connected to a cold water box through a water pipe, and one end of the return water pipe is connected to the coolant tank through the water pipe inside the No. 2 support frame.

[0016] Preferably, a water collecting box is detachably mounted on the top of the base below the air inlet guide grille.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the circulating fan integrates the functions of a fan, a dehumidifier, a heater and a ventilation fan (through the smoke exhaust function) in one, meeting the various needs of users in different seasons and environments; by adjusting the speed of the turbo fan, the working status of the heating part and the dehumidification part, and the angle of the rotating shell and the cylindrical shell, various functions such as cold and warm air switching, dehumidification and smoke exhaust can be achieved; the smoke sensor can automatically detect the smoke or tobacco burning smell in the air, trigger the exhaust function, and improve the indoor air quality; the gyroscope and the magnetometer cooperate to enable the fan to automatically adjust the direction of the air outlet to ensure the most effective exhaust effect; the heating part adopts the design of an electric heating plate and a heat-conducting fin to improve the heat exchange efficiency, so that the fan can quickly blow out hot air; the dehumidification part effectively removes moisture from the air through a multi-layer spiral tube and a coolant circulation system, and at the same time can use a semiconductor refrigeration sheet to achieve a refrigeration function; the design of the support cover not only lowers the center of gravity of the equipment and improves stability, but can also be used as a storage table. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the positioning screw of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the heat dissipation duct of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the air inlet guide grille and the support cover of the present invention when they are combined;

[0022] Figure 5 It is a structural schematic diagram of the position of the rotating motor of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the heat conducting plate of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the spiral tube of the present invention;

[0025] Figure 8 It is a structural schematic diagram of a small water pump of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the air inlet guide grille of the present invention;

[0027] Fig.10 It is a schematic structural diagram of the air outlet guide grille of the present invention.

[0028] In the figure: 1. base; 2. rotating shell; 3. No. 1 support frame; 4. cylindrical shell; 5. gyroscope; 6. air inlet guide grille; 7. air outlet guide grille; 8. support cover; 9. water collecting box; 10. smoke sensor; 11. No. 2 support frame; 12. cold water box; 13. semiconductor refrigeration plate; 14. cooling fan; 15. return pipe; 16. water inlet pipe; 17. spiral pipe; 18. connecting water pipe; 19. cooling air duct; 20. metal cover; 21. electric heating plate; 22. heat conduction plate; 23. heat conduction fins; 24. rotating motor; 25. coolant tank; 26. small water pump; 27. positioning screw; 28. positioning plate; 29. ​​turbo fan; 30. driving motor. DETAILED DESCRIPTION

[0029] 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, not all of the embodiments. 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.

[0030] See also Figure 1-Figure 10 The present invention provides a technical solution: a multifunctional circulation fan, comprising: a base 1, a rotating shell 2 is rotatably installed in the middle of the base 1, a driving part is arranged at the bottom of the rotating shell 2, and is used to drive the rotating shell 2 to rotate, a first support frame 3 and a second support frame 11 are respectively fixedly connected to the two sides of the rotating shell 2, a cylindrical shell 4 is rotatably installed between the first support frame 3 and the second support frame 11, a turbo fan 29 is rotatably installed inside the cylindrical shell 4 through a supporting plate, a metal cover 20 with a conical structure is arranged inside the cylindrical shell 4 in the air outlet direction of the cylindrical shell 4, the metal cover 20 is made of copper, and its diameter gradually decreases toward the air outlet direction, and a heating part is arranged on the outside of the metal cover 20, and is used to heat the blown air; a dehumidification part is arranged at one end of the air inlet of the cylindrical shell 4, the dehumidification part comprises a spiral tube 17 with coolant flowing in a spiral ring, the spiral tube 17 is provided with multiple layers, and is used to dehumidify or cool the air, and a cooling part for circulating and cooling the coolant is arranged inside the base 1.

[0031] It should be noted that the present invention is provided with a controller and an operation panel installed on the top of the base 1. When it is normally used as a fan, the driving unit drives the No. 1 support frame 3 and the No. 2 support frame 11 to rotate through the rotating shell 2, so as to adjust the air outlet direction of the cylindrical shell 4. The turbofan 29 rotates at high speed to perform a blowing operation. The wind enters from one end of the cylindrical shell 4 and is blown out from the other end of the cylindrical shell 4. When the air needs to be dehumidified or cooled, the cylindrical shell 4 is adjusted to be tilted upward so that the spiral tube 17 is located below, and the spiral tube 17 is cooled by the cooling unit. When the wind passes through the spiral tube 17, the wind is cooled, and under the action of liquefaction, the moisture also forms water droplets on the outside of the spiral tube 17 and flows downward, so that the blown wind can be cooled or dehumidified. When the fan needs to be heated, the wind speed of the turbofan 29 is adjusted to the lowest, and the heating unit on the outside of the metal cover 20 is controlled to heat, so that the wind is heated when passing through the inner wall of the metal cover 20. It can heat the dehumidified wind or the natural wind, so as to realize the hot and cold switching of the fan and dehumidification.

[0032] like Figure 1 , 2 As shown in , 3, it also includes a detection exhaust part, which includes a smoke sensor 10 fixedly connected to the top of the base 1 for detecting smoke and tobacco burning smell. The base 1 is internally fixed with a rotating motor 24 for driving the rotating shell 2 to rotate. The base 1 is internally installed with a travel switch for limiting the rotation angle of the rotating shell 2. The top of the cylindrical shell 4 is fixedly connected with a gyroscope 5 for cooperating with the magnetometer of the window to adjust the air outlet position of the cylindrical shell 4. When detecting indoor smoke, the cylindrical shell 4 automatically rotates toward the window for strong exhaust.

[0033] It should be noted that the smoke sensor 10 of the present invention is fixedly connected to the top of the base 1, and is used to detect whether there is smoke or someone is smoking in the air; the sensor can detect harmful smoke components in the air, such as carbon monoxide, tobacco combustion gas, etc., and automatically identify changes in indoor air quality; a rotating motor 24 is installed inside the base 1, and the function of the motor is to drive the rotating shell 2 to rotate; the rotating shell 2 allows the controller to make dynamic adjustments based on the detected smoke signal, helping the exhaust controller to automatically adjust the wind direction and air outlet position; a gyroscope 5 is fixedly connected to the top of the cylindrical shell 4, and the gyroscope can detect the rotation angle and posture changes of the cylindrical shell 4; through the data of the gyroscope, the controller can monitor the angle changes of the fan in real time and accurately control it; the gyroscope ensures that the cylindrical shell 4 can adjust the direction of the air outlet according to the magnetometer (magnetic field information of the window), so that the cylindrical shell 4 can accurately point to the window or other ventilation outlet; the magnetometer is installed on the window and can detect the magnetic field changes in the direction of the window; through the information of the magnetometer, the controller can determine the current window orientation, for example For example, it knows that the window faces southeast; the cylindrical shell 4 will automatically rotate according to the orientation of the window to ensure that the fan's air outlet is aligned with the window, thereby achieving the most effective exhaust; when the smoke sensor 10 detects smoke or the smell of burning tobacco, the controller will start immediately; according to the detected smoke signal, the controller will drive the cylindrical shell 4 to rotate through the rotating motor 24 to make the air outlet face the window or other effective exhaust; the cooperation of the gyroscope 5 and the magnetometer ensures that the fan's air outlet is accurately aligned with the window direction to maximize the exhaust effect; the rotation of the cylindrical shell 4 causes the fan outlet to continuously adjust its position, thereby ensuring that the air flows to the external window or vent during exhaust and effectively removes indoor smoke; after the smoke sensor detects smoke, the exhaust controller is automatically started; the rotating motor, gyroscope and magnetometer cooperate to realize the automatic rotation of the cylindrical shell 4 to ensure that the fan faces the window or vent, and the controller intelligently adjusts according to the window direction and the feedback of the smoke sensor to ensure effective exhaust and improve air quality. An audible and visual alarm is installed on the top of the base 1, and an alarm can be sounded if there is air abnormality to warn indoor personnel.

[0034] like Figure 2 , 3 As shown in , 7, 8, 9 and 10, the air outlet of the cylindrical shell 4 is provided with an air outlet guide grille 7, the air inlet of the cylindrical shell 4 is provided with an air inlet guide grille 6 made of metal material, and a support cover 8 is detachably installed at the bottom of the base 1 for lowering the center of gravity of the equipment and forming a storage table together with the air outlet guide grille 7. The cylindrical shell 4 is rotatably connected to the No. 2 support frame 11, one end of the cylindrical shell 4 is inserted into the No. 2 support frame 11 and is fixedly connected with a positioning plate 28, and a positioning screw 27 is threadedly connected to one side of the No. 2 support frame 11, and a positioning hole cooperating with the positioning screw 27 is provided in the middle of the positioning plate 28 for fixing the orientation angle of the air outlet guide grille.

[0035] It should be noted that when the air inlet guide grille 6 of the present invention is made of iron, it is convenient to exchange heat with the passing air. When the fan is in normal use, the support cover 8 is placed at the bottom of the base 1. The top of the support cover 8 is provided with a groove that cooperates with the base 1, so as to increase the area of ​​the bottom of the base 1, lower its center of gravity, and ensure its stability during operation. When the fan is not in use, the cylindrical shell 4 can be rotated so that the air outlet guide grille 7 faces upward. At this time, the positioning screw 27 is rotated so that the end of the positioning screw 27 is inserted into the corresponding hole of the positioning plate 28, so as to fix the position and angle of the cylindrical shell 4, and then the support cover 8 is covered on the top of the air outlet guide grille 7, so that the support cover 8 can be used as a storage table or a small coffee table.

[0036] like Figure 5 , 6 As shown, the heating part includes electric heating plates 21 equidistantly distributed on the outside of the metal cover 20, a heat conducting plate 22 is fixedly connected to the inner wall of the metal cover 20 at the position corresponding to the electric heating plate 21, and a plurality of V-shaped heat conducting fins 23 are equidistantly fixedly connected to the outside of the heat conducting plate 22.

[0037] It should be noted that the electric heating plates 21 of the present invention are the heat sources of the heating part, and they are equidistantly distributed on the outside of the metal cover 20; the electric heating plates are heated by electricity to provide heat; the metal cover 20 is made of copper, which makes the metal cover have good thermal conductivity, can effectively conduct heat from the electric heating plates 21 to the inside, and help to evenly distribute the heat; the diameter of the metal cover 20 gradually becomes smaller and narrows towards the air outlet direction. Through the principle of fluid dynamics (similar to the nozzle effect), the air flow is accelerated, the wind speed at the air outlet is increased, and the heated air is delivered more efficiently; the heat conducting plate 22 is fixed to the inner wall of the metal cover 20 and is directly located below the electric heating plate 21; the function of the heat conducting plate is to transfer the heat generated by the electric heating plate 21 to the external heat conducting fins 23; the metal with strong thermal conductivity of the heat conducting plate, such as aluminum or copper, helps to quickly transfer heat; the heat conducting fins 23 are components in contact with the heat conducting plate 22, which are made of metal The fan has a V-shaped structure and is fixed to the outside of the heat-conducting plate at equal distances; the V-shaped fin setting can provide a larger surface area, so that more heat can be transferred from the heat-conducting plate to the air; this structure not only increases the heat exchange area, but also effectively improves the heat conduction efficiency; when the fan is working, it will suck air into the metal cover 20; the fan guides the air through the metal cover and contacts the heated heat-conducting fins 23; since the heat-conducting fins 23 have absorbed a large amount of heat from the heat-conducting plate 22, the air passing through the fins will be heated, thereby realizing the function of the fan blowing out hot air; through the strong airflow of the fan, the hot air can be quickly delivered to the room or the area that needs to be heated; the V-shaped heat-conducting fin setting increases the contact area with the air, thereby improving the heat exchange efficiency; the copper metal cover can evenly distribute heat to avoid local overheating; the fan setting accelerates the air flow, making the heating effect faster and more efficient.

[0038] like Figure 5 As shown, a drive motor 30 is fixedly connected to the interior of the cylindrical shell 4 , and an output end of the drive motor 30 is fixedly connected to the turbofan 29 .

[0039] It should be noted that the drive motor 30 of the present invention is responsible for providing power to rotate the turbofan 29; the motor controls its rotation speed through electric current, and the controller will adjust the operation of the motor as needed to achieve adjustment of the air volume or wind speed; the turbofan 29 is the main component of the fan and is responsible for pushing the air out; the output end of the drive motor 30 is fixedly connected to the turbofan 29 to ensure that the power of the motor can be stably and seamlessly transmitted to the turbofan; when the drive motor 30 is energized and starts working, the rotation of the motor drives the turbofan 29 fixedly connected to it to rotate; the rotational motion of the turbofan draws in the surrounding air, and promotes the air flow through its rotation, so that the air flows in a specific direction to generate wind flow.

[0040] like Figure 3 , 5As shown in Figures 7 and 8, the dehumidification part also includes a return pipe 15 and a water inlet pipe 16 fixedly connected to the inner side of the air inlet guide grille 6, and a spiral tube 17 is equidistantly arranged between the return pipe 15 and the water inlet pipe 16. The spiral tube 17 is arranged corresponding to the mesh of the air inlet guide grille 6. The water inlet pipe 16 is connected to a cold water box 12 through a water pipe. The cold water box 12 is installed inside the No. 1 support frame 3. A semiconductor refrigeration sheet 13 is fixedly connected to the outer side of the cold water box 12. The cooling end of the semiconductor refrigeration sheet 13 is fitted with the cold water box 12, and the heating end of the semiconductor refrigeration sheet 13 is fixedly connected to a cooling fan 14. A cooling air duct 19 is provided at the position of the cooling fan 14 inside the No. 1 support frame 3. A cooling hole corresponding to the cooling air duct 19 is provided at the bottom of the No. 1 support frame 3. The top of the base 1 is located below the air inlet guide grille 6 and a water collecting box 9 is detachably installed.

[0041] It should be noted that when the present invention cools the liquid inside the cold water box 12, the semiconductor refrigeration sheet 13 starts to work, and the refrigeration end of the semiconductor refrigeration sheet 13 cools the cold water box 12. The heat generated by the semiconductor refrigeration sheet 13 is ejected into the heat dissipation duct 19 through the heat dissipation fan 14, and the heat is dissipated from the bottom heat dissipation hole through the heat dissipation duct 19, so that the cold water box 12 is cooled. A partition plate is provided inside the cold water box 12 to divide the inside of the cold water box 12 into an S-shaped channel. After the cold water box 12 is cooled, the coolant enters the water inlet pipe 16 through the water pipe. Under the action of water pressure and flow, the coolant enters the spiral tube 17 through the water inlet pipe 16, and then enters the return pipe 15. The return pipe 15 A pressure valve is installed at one end, and after the coolant stays in the spiral tube 17 for a certain period of time, when the pressure of the water inlet pipe 16 reaches a certain level, the coolant flows back to the initial position through the water pipe. During this period, the angle of the cylindrical shell 4 is adjusted to make the air inlet guide grille 6 tilt downward. The spiral tube 17 is provided with multiple layers, which transmits the low temperature to the air inlet guide grille 6, so that the air inlet guide grille 6 is in a low temperature state. The humid wind is liquefied into water droplets after contacting the air inlet guide grille 6. Under the action of gravity, it moves downward along the air inlet guide grille 6 and flows into the water collecting box 9, so as to cool or dehumidify the air. When dehumidification is required and no refrigeration is required, the air temperature can be adjusted by the heating part.

[0042] like Figure 7 , 8 As shown, a coolant tank 25 is fixedly connected to the inside of the top of the base 1, a small water pump 26 is fixedly connected to one side of the coolant tank 25, an input end of the small water pump 26 is connected to the coolant tank 25 through a connecting water pipe 18, an output end of the small water pump 26 is connected to the cold water box 12 through a water pipe, and one end of the return pipe 15 is connected to the coolant tank 25 through a water pipe inside the second support frame 11.

[0043] It should be noted that when the present invention cools the cold water box 12, the small water pump 26 continuously transports the coolant in the coolant tank 25 to the cold water box 12 through the connecting water pipe 18. A partition plate is provided between the connecting water pipe 18 and the heat dissipation duct 19 to prevent the heat dissipation duct 19 from heating the connecting water pipe 18. One end of the cold water box 12 is connected to a water pipe through a rotary joint, and the water pipe is connected to the water inlet pipe 16. One end of the spiral tube 17 is connected to the coolant tank 25 through a rotary joint and the water pipe, thereby forming a closed loop of the coolant. .

[0044] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0046] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional circulation fan, characterized in that: include: A base (1), a rotating shell (2) is rotatably mounted in the middle of the base (1), a driving unit is provided at the bottom of the rotating shell (2) for driving the rotating shell (2) to rotate, and a first support frame (3) and a second support frame (11) are respectively fixedly connected to two sides of the rotating shell (2); A cylindrical shell (4), the cylindrical shell (4) being placed between the first support frame (3) and the second support frame (11), a turbo fan (29) being arranged inside the cylindrical shell (4), a metal cover (20) with a conical structure being arranged inside the cylindrical shell (4) in the air outlet direction of the cylindrical shell (4), a heating portion being arranged on the outer side of the metal cover (20) for heating the blown air; A dehumidification unit is disposed at one end of the cylindrical shell (4) where air enters, and includes a spiral tube (17) in which coolant flows in a spiral ring, and is used for dehumidifying or cooling air. A cooling unit for circulating and cooling the coolant is provided inside the base (1).

2. A multifunctional circulation fan according to claim 1, characterized in that: The device also comprises a detection and exhaust unit, the detection and exhaust unit comprising a smoke sensor (10) fixedly connected to the top of the base (1) for detecting smoke and tobacco burning smell, the driving unit being a rotating motor (24) fixedly connected to the inside of the base (1) for driving the rotating shell (2) to rotate, the top of the cylindrical shell (4) being fixedly connected to a gyroscope (5) for cooperating with a magnetometer of the window to adjust the air outlet position of the cylindrical shell (4), and when detecting indoor smoke smell, the cylindrical shell (4) automatically rotates toward the window for strong exhaust.

3. A multifunctional circulation fan according to claim 1, characterized in that: The air outlet of the cylindrical shell (4) is provided with an air outlet guide grille (7), the air inlet of the cylindrical shell (4) is provided with an air inlet guide grille (6) made of metal material, and a support cover (8) is detachably mounted on the bottom of the base (1) for lowering the center of gravity of the device and cooperating with the air outlet guide grille (7) to form a storage table.

4. A multifunctional circulation fan according to claim 3, characterized in that: The cylindrical shell (4) is rotatably connected to the second support frame (11), one end of the cylindrical shell (4) is inserted into the second support frame (11) and fixedly connected with a positioning plate (28), one side of the second support frame (11) is threadedly connected with a positioning screw (27), and a positioning hole cooperating with the positioning screw (27) is provided in the middle of the positioning plate (28) for vertically positioning the sizing air outlet guide grille (7) upward.

5. The multifunctional circulation fan according to claim 1, characterized in that: The heating portion comprises electric heating plates (21) equidistantly distributed on the outside of the metal cover (20); a heat conducting plate (22) is fixedly connected to the inner wall of the metal cover (20) at a position corresponding to the electric heating plate (21); and a plurality of V-shaped heat conducting fins (23) are equidistantly fixedly connected to the outside of the heat conducting plate (22).

6. The multifunctional circulation fan according to claim 1, characterized in that: A drive motor (30) is fixedly connected to the interior of the cylindrical shell (4), and an output end of the drive motor (30) is fixedly connected to the turbofan (29).

7. The multifunctional circulation fan according to claim 3, characterized in that: The dehumidification unit also includes a return pipe (15) and a water inlet pipe (16) fixedly connected to the inner side of the air inlet guide grille (6); the spiral pipe (17) is equidistantly arranged between the return pipe (15) and the water inlet pipe (16); the spiral pipe (17) is arranged corresponding to the mesh of the air inlet guide grille (6); the water inlet pipe (16) is connected to a cold water box (12) through a water pipe; the cold water box (12) is installed inside the first support frame (3); a semiconductor refrigeration sheet (13) is fixedly connected to the outer side of the cold water box (12); and the refrigeration end of the semiconductor refrigeration sheet (13) is in contact with the cold water box (12).

8. A multifunctional circulation fan according to claim 7, characterized in that: The heating end of the semiconductor refrigeration plate (13) is fixedly connected to a heat dissipation fan (14), a heat dissipation duct (19) is provided inside the first support frame (3) at a position corresponding to the heat dissipation fan (14), and a heat dissipation hole corresponding to the heat dissipation duct (19) is provided at the bottom of the first support frame (3).

9. A multifunctional circulation fan according to claim 8, characterized in that: A coolant tank (25) is fixedly connected to the interior of the top base (1) of the base (1), a small water pump (26) is fixedly connected to one side of the coolant tank (25), an input end of the small water pump (26) is connected to the coolant tank (25) via a connecting water pipe (18), an output end of the small water pump (26) is connected to a cold water box (12) via a water pipe, and one end of the return water pipe (15) is connected to the coolant tank (25) via a water pipe inside the second support frame (11).

10. The multifunctional circulation fan according to claim 3, characterized in that: A water collecting box (9) is detachably mounted on the top of the base (1) below the air inlet guide grille (6).

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