Outer rotor high-frequency fan

Abstract

The invention relates to the technical field of fans, in particular to an outer rotor high-frequency fan which comprises a central pipeline and a digital display control panel, the central pipeline is vertically arranged in the axial direction, and a fan body capable of forming airflow from bottom to top in the central pipeline is arranged in the central pipeline; the inner side wall of the central pipeline is provided with a spiral liquid guide channel used for forming spiral water flow to flow downwards. The upper end and the lower end of the center pipeline are connected with an upper ventilation pipeline and a lower ventilation pipeline in a sealed mode respectively, and an opening and closing structure used for controlling on-off of airflow in the upper ventilation pipeline is arranged in the upper ventilation pipeline. Through mutual cooperation of the central pipeline, the spiral liquid guide channel, the upper ventilation pipeline, the lower ventilation pipeline, the opening and closing structure, the water tank, the water supply structure and the like, external circulation of water liquid for heat dissipation of the fan can be achieved, and in the process, rapid heat reduction of the fan body is achieved, and particle impurities in smoke are absorbed.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to an outer rotor high frequency fan. Background Art

[0002] The external rotor fan is a special type of fan, the main feature of which is that the stator is located in the middle of the motor, while the rotor is located outside. This design gives the external rotor fan a series of unique advantages and application scenarios, and is widely used in air heaters, heat pumps, condensers, cooling units, evaporators, electronic equipment air supply or heat dissipation and other occasions.

[0003] An external rotor fan with announcement number CN221380708U includes a casing, an impeller, a stator assembly, a rotor assembly and an output shaft, the casing includes a first end cover and a second end cover, the impeller is mounted on the first end cover, the stator assembly and the rotor assembly are arranged in the first end cover, the rotor assembly is coaxially arranged with the stator assembly, and the rotor assembly is arranged outside the stator assembly.

[0004] A smoke exhaust fan with announcement number CN203702595U includes a fan body, which is connected to a smoke inlet, a smoke outlet and a cold air outlet through an air duct. The cold air outlet is arranged near the smoke inlet, and a valve is provided on the cold air outlet. The valve is connected to a valve opening controller. A temperature control meter is provided in the smoke outlet, and the temperature control meter is connected to the valve opening controller through a smoke exhaust fan control device. The outer surface of the smoke exhaust fan is coated with a fireproof layer.

[0005] At present, the heat dissipation method used by external rotor fans is mostly heat sink or internal circulation water cooling. When high-temperature flue gas is processed in fire-fighting applications, the high temperature and particulate impurities in the flue gas greatly affect the life of the fan, and the heat dissipation method cannot quickly cool the fan. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] The purpose of the present invention is to provide an outer rotor high frequency fan in order to solve the above-mentioned problem.

[0008] (II) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] The present invention provides an outer rotor high frequency fan, comprising a central pipe and a digital display control panel, wherein the central pipe is axially arranged vertically and a fan body capable of forming an airflow from bottom to top is arranged therein, and a spiral liquid guide channel for forming a spiral water flow flowing downward is arranged on the inner side wall of the central pipe;

[0011] The upper and lower ends of the central pipe are respectively sealedly connected with an upper ventilation pipe and a lower ventilation pipe, and the upper ventilation pipe is provided with an opening and closing structure for controlling the air flow in the upper ventilation pipe;

[0012] A water tank is provided on one side of the central pipe, and a return water cooling structure is provided between the bottom of the water tank and the bottom end of the lower ventilation pipe for cooling the water in the ventilation pipe and re-transporting it to the water tank for recycling. A water supply structure is provided on the water tank for providing water to the central pipe to absorb flue gas impurities and cool it down.

[0013] Furthermore, an upper cover is provided at the upper end of the spiral liquid guiding channel, the cross-sectional shape of the spiral liquid guiding channel is L-shaped, a spiral water guiding groove is formed between the spiral liquid guiding channel and the inner wall of the central pipe, and a plurality of drip holes are opened along the spiral line direction of the spiral liquid guiding channel near the bottom of the inner wall of the central pipe, and the cross-sectional area of ​​the drip holes is smaller than one tenth of the cross-sectional area of ​​the spiral water guiding groove.

[0014] Furthermore, the water supply structure includes a second water pump arranged in the water tank, the water inlet of the second water pump is connected to one end of a water suction pipe, the other end of the water suction pipe extends to the bottom surface of the water tank, the water outlet of the second water pump is connected to one end of a water outlet pipe, the other end of the water outlet pipe passes through the water tank, the central pipe and the spiral liquid guiding channel in sequence and extends to the central pipe where it is connected to an annular water pipe, a plurality of water outlet nozzles are arranged on the lower side of the annular water guiding channel along its circumferential direction, a water outlet hole for introducing water into the spiral liquid guiding channel is opened on the water outlet pipe located in the spiral liquid guiding channel, and the output end of the digital display control panel is electrically connected to the input end of the second water pump.

[0015] Furthermore, the opening and closing structure includes an inner ring fixedly sleeved in the upper ventilation duct, an opening and closing rotating plate is arranged in the inner ring, and the opening and closing rotating plate is rotatably arranged in the inner ring by a rotating shaft, and a motor for driving the opening and closing rotating plate to rotate under the support of the rotating shaft is fixedly arranged on the upper ventilation duct, an upper limit sealing strip is arranged on the inner side wall of the upper port of the inner ring, and a lower limit sealing strip is arranged on the inner side wall of the lower port of the inner ring. When the motor drives the opening and closing rotating plate to rotate to a horizontal state, the opening and closing rotating plate cooperates with the upper limit sealing strip and the lower limit sealing strip to realize the disconnection of the upper ventilation duct. When the motor drives the opening and closing rotating plate to rotate to a set state, the upper ventilation duct is in an open state and connected with the central duct, and the output end of the digital display control panel is electrically connected to the input end of the motor.

[0016] Furthermore, one side of the lower ventilation duct is connected to a smoke inlet duct via an L-shaped duct, the axial direction of the lower ventilation duct and the axial direction of the smoke inlet duct are perpendicular to each other, and a filter layer is arranged in the lower ventilation duct below the L-shaped duct, and the shape of the filter layer is a cone shape that is wide at the top and narrow at the bottom.

[0017] Further, the return water cooling structure includes a first water pump arranged below the water tank, the water inlet of the first water pump is connected to one end of a lower liquid pumping pipe, the other end of the lower liquid pumping pipe extends to the inside of the bottom end of the lower ventilation pipe, the water outlet of the first water pump is connected to a liquid guide joint, and the lower liquid pumping pipe is provided with a solenoid valve;

[0018] The return water cooling structure also includes an upper liquid outlet pipe arranged in the water tank, the upper end of the upper liquid outlet pipe extends to the top surface inside the water tank, the lower end of the upper liquid outlet pipe passes through the bottom side of the water tank and is connected to the liquid guide joint through the cooling pipe plate, and the output end of the digital display control panel is electrically connected to the input end of the solenoid valve and the first water pump respectively.

[0019] Furthermore, a liquid adding pipe is provided on the upper side of the water tank, and a sealing cover is detachably provided on the liquid adding pipe. A liquid level sensor for detecting the internal liquid level height is provided on the inner top surface of the water tank. A support plate is provided on the water tank, and both ends of the support plate are fixedly connected to the water tank and the central pipe respectively. The outer shape of the water tank is a rectangular parallelepiped, and supporting feet are fixedly provided at the four corners of the lower side of the water tank. The output end of the liquid level sensor is electrically connected to the input end of the digital display control panel.

[0020] Furthermore, the fan body includes a central axis arranged in the central pipe, both ends of the central axis are fixed in the central pipe through support shafts, an inner stator is arranged on the central shaft, an outer rotor is rotatably arranged on the outer side of the inner stator, an outer rotating shell is fixedly arranged on the outer side of the outer rotor, a plurality of fan blades are arranged on the outer side of the outer rotating shell along its circumferential direction, and the outer rotating shell is rotatably connected to the central axis through a bearing.

[0021] Furthermore, a water channel is opened in the central axis, the lower end of the water channel is open and the upper end is located above the inner stator, a plurality of water holes are opened on the outer wall of the upper end of the central axis close to the water channel, and a water collecting hopper is fixedly provided on the outer wall of the central axis between the water holes and the inner stator, and the appearance of the water collecting hopper is a conical shell shape that is wide at the top and narrow at the bottom.

[0022] Furthermore, a temperature sensor for detecting the air temperature inside the upper ventilation duct is provided inside the upper ventilation duct, and an output end of the temperature sensor is electrically connected to an input end of the digital display control panel.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Through the cooperation of the central pipe, spiral liquid guide channel, upper ventilation pipe, lower ventilation pipe, opening and closing structure, water tank and water supply structure, the water liquid external circulation for fan heat dissipation can be realized. In this process, the fan body can be quickly cooled and the particulate impurities in the flue gas can be absorbed.

[0026] 2. The water supply structure has two functions. The first function is to form a water curtain on the inner wall of the central pipe in cooperation with the spiral liquid guide channel. The second function is to form water mist through the cooperation of the water outlet nozzle and the fan blade. The combination of water curtain and water mist greatly improves the cooling of the fan body and the fire prevention and smoking ability in the central pipe.

[0027] 3. The opening and closing structure can realize the opening and closing control of the upper ventilation pipe. The lower ventilation pipe, L-shaped pipe and return water cooling structure cooperate with each other to form a U-shaped water seal at the connection between the L-shaped pipe and the central pipe, thereby realizing the disconnection and sealing of the lower ventilation pipe to prevent the fire from spreading outward;

[0028] 4. The return water cooling structure recycles the water into the water tank, thereby realizing independent supply of water. The return water cooling structure can realize the recycling of water after cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a main structural schematic diagram of the present invention;

[0031] Figure 2 The present invention Figure 1 Schematic diagram of the left view structure;

[0032] Figure 3 The present invention Figure 1 Schematic diagram of the three-dimensional structure;

[0033] Figure 4 The present invention Figure 2 AA cross-sectional structural diagram;

[0034] Figure 5 The present invention Figure 4 A schematic diagram of the local enlarged structure at B;

[0035] Figure 6 The present invention Figure 4 A schematic diagram of the local enlarged structure at C;

[0036] Figure 7 The present invention Figure 4 A schematic diagram of the local enlarged structure at D;

[0037] Figure 8 The present invention Figure 1 A schematic diagram of a three-dimensional structure in another direction;

[0038] Fig. 9 It is a schematic diagram of the cross-sectional structure of the opening and closing structure of the present invention.

[0039] The reference numerals are as follows: 1. central pipeline; 101. spiral liquid guiding channel; 102. upper cover; 103. drip hole; 104. central axis; 105. inner stator; 106. outer rotor; 107. outer rotating shell; 108. bearing; 109. water collecting bucket; 110. water hole; 111. water conveying channel; 112. supporting shaft; 113. fan blade; 2. upper ventilation pipeline; 3. lower ventilation pipeline; 301. smoke inlet pipeline; 302. L-shaped pipeline; 303. filter layer; 4. opening and closing structure; 401. inner sleeve ring; 402. upper limit sealing strip; 403. opening and closing rotating plate; 404. 04. Rotating shaft; 405. Motor; 406. Lower limit sealing strip; 5. Water tank; 501. Liquid adding pipe; 502. Sealing cover; 503. Support plate; 6. Return water cooling structure; 601. Cooling pipe plate; 602. Upper liquid outlet pipe; 603. Liquid guide joint; 604. Solenoid valve; 605. Lower liquid extraction pipe; 606. First water pump; 7. Water supply structure; 701. Second water pump; 702. Water suction pipe; 703. Water outlet pipe; 704. Water outlet hole; 705. Annular water pipeline; 706. Water outlet nozzle; 8. Liquid level sensor; 9. Digital display control panel; 10. Temperature sensor. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 9As shown, the present invention provides an outer rotor high-frequency fan, including a central pipe 1 and a digital display control panel 9, the central pipe 1 is axially arranged vertically and is provided with a fan body capable of forming an airflow from bottom to top therein, and a spiral liquid guide channel 101 for forming a spiral water flow flowing downward is provided on the inner wall of the central pipe 1; the upper and lower ends of the central pipe 1 are respectively sealed and connected with an upper ventilation pipe 2 and a lower ventilation pipe 3, and an opening and closing structure 4 for controlling the interruption of airflow therein is provided in the upper ventilation pipe 2; a water tank 5 is provided on one side of the central pipe 1, and a return water cooling structure 6 for cooling the water in the ventilation pipe 3 and re-transporting it to the water tank 5 for recycling is provided between the bottom of the water tank 5 and the bottom end of the lower ventilation pipe 3, and a water supply structure 7 for providing water to the central pipe 1 to absorb flue gas impurities and cool down is provided on the water tank 5.

[0042] See the instruction manual Figure 6 As shown, an upper cover 102 is provided at the upper end of the spiral liquid guiding channel 101, the cross-sectional shape of the spiral liquid guiding channel 101 is L-shaped, a spiral water guiding groove is formed between the spiral liquid guiding channel 101 and the inner wall of the central pipe 1, and a plurality of drip holes 103 are opened along the spiral line direction of the spiral liquid guiding channel 101 near the bottom of the inner wall of the central pipe 1, and the cross-sectional area of ​​the drip holes 103 is smaller than one tenth of the cross-sectional area of ​​the spiral water guiding groove.

[0043] See the instruction manual Figure 4 and Figure 6 As shown, the water supply structure 7 includes a second water pump 701 arranged in the water tank 5, the water inlet of the second water pump 701 is connected to one end of a water suction pipe 702, the other end of the water suction pipe 702 extends to the inner bottom surface of the water tank 5, the water outlet of the second water pump 701 is connected to one end of a water outlet pipe 703, the other end of the water outlet pipe 703 passes through the water tank 5, the central pipe 1 and the spiral liquid guiding channel 101 in sequence and extends to the central pipe 1 and is connected to an annular water pipe 705, the lower side of the annular water pipe 705 is provided with a plurality of water outlet nozzles 706 along its circumferential direction, the water outlet pipe 703 located in the spiral liquid guiding channel 101 is provided with a water outlet hole 704 for introducing water into the spiral liquid guiding channel 101, and the output end of the digital display control panel 9 is electrically connected to the input end of the second water pump 701. Through the above-mentioned specific structural design, the water supply structure 7 has two functions. The first function is to cooperate with the spiral liquid guide channel 101 to form a water curtain on the inner wall of the central pipe 1. The second function is to form water mist through the cooperation of the water outlet nozzle 706 and the fan blades 113. The combination of the water curtain and the water mist greatly improves the cooling of the fan body and the fire prevention and smoking capacity in the central pipe 1.

[0044] See the instruction manual Figure 1 , Figure 4 and Figure 5As shown, the opening and closing structure 4 includes an inner sleeve 401 fixedly sleeved in the upper ventilation pipe 2, an opening and closing rotating plate 403 is arranged in the inner sleeve 401, and the opening and closing rotating plate 403 is rotatably arranged in the inner sleeve 401 through a rotating shaft 404, and a motor 405 for driving the opening and closing rotating plate 403 to rotate under the support of the rotating shaft 404 is fixedly arranged on the upper ventilation pipe 2, an upper limit sealing strip 402 is arranged on the inner side wall of the upper port of the inner sleeve 401, and the inner side wall of the lower port of the inner sleeve 401 is provided. A lower limit sealing strip 406 is provided on the wall. When the motor 405 drives the opening and closing rotating plate 403 to rotate to a horizontal state, the opening and closing rotating plate 403 cooperates with the upper limit sealing strip 402 and the lower limit sealing strip 406 to disconnect the upper ventilation duct 2. When the motor 405 drives the opening and closing rotating plate 403 to rotate to a set state, the upper ventilation duct 2 is in an open state and is connected to the central duct 1. The output end of the digital display control panel 9 is electrically connected to the input end of the motor 405. Through the above-mentioned specific structural design, the outer contours of the upper limit sealing strip 402 and the lower limit sealing strip 406 are in an arc shape less than 180 degrees, thereby achieving a sealing effect of the opening and closing rotating plate 403 in a horizontal state without affecting the opening and closing rotating plate 403 turning over 90 degrees.

[0045] See the instruction manual Figure 1 and Figure 3 As shown, one side of the lower ventilation duct 3 is connected to the smoke inlet duct 301 through an L-shaped duct 302, and the axial direction of the lower ventilation duct 3 and the axial direction of the smoke inlet duct 301 are perpendicular to each other. A filter layer 303 is arranged in the lower ventilation duct 3 below the L-shaped duct 302, and the filter layer 303 has an outer shape of a cone that is wide at the top and narrow at the bottom.

[0046] See the instruction manual Figure 1 and Figure 4 As shown, the return water cooling structure 6 includes a first water pump 606 arranged below the water tank 5, the water inlet of the first water pump 606 is connected to one end of a lower liquid pumping pipe 605, the other end of the lower liquid pumping pipe 605 extends to the bottom end of the lower ventilation pipe 3, the water outlet of the first water pump 606 is connected to a liquid guide joint 603, and a solenoid valve 604 is arranged on the lower liquid pumping pipe 605; the return water cooling structure 6 also includes an upper liquid outlet pipe 602 arranged in the water tank 5, the upper end of the upper liquid outlet pipe 602 extends to the top surface of the water tank 5, the lower end of the upper liquid outlet pipe 602 passes through the bottom side of the water tank 5 and is connected to the liquid guide joint 603 through the cooling pipe plate 601, and the output end of the digital display control panel 9 is electrically connected to the solenoid valve 604 and the input end of the first water pump 606 respectively.

[0047] See the instruction manual Figure 4 and Figure 8As shown, a liquid adding pipe 501 is provided on the upper side of the water tank 5, and a sealing cover 502 is detachably provided on the liquid adding pipe 501. A liquid level sensor 8 for detecting the internal liquid level height is provided on the inner top surface of the water tank 5. A support plate 503 is provided on the water tank 5, and both ends of the support plate 503 are respectively fixedly connected to the water tank 5 and the central pipe 1. The outer shape of the water tank 5 is a rectangular parallelepiped, and supporting feet are fixedly provided at the four corners of the lower side of the water tank 5. The output end of the liquid level sensor 8 is electrically connected to the input end of the digital display control panel 9.

[0048] The fan body includes a central axis 104 arranged in the central pipe 1, and both ends of the central axis 104 are fixed in the central pipe 1 through support shafts 112. An inner stator 105 is arranged on the central axis 104, and an outer rotor 106 is rotatably arranged on the outer side of the inner stator 105. An outer rotating shell 107 is fixedly arranged on the outer side of the outer rotor 106, and a plurality of fan blades 113 are arranged on the outer side of the outer rotating shell 107 along its circumferential direction. The outer rotating shell 107 is rotatably connected to the central axis 104 through a bearing 108. A water delivery channel 111 is provided in the central shaft 104, the lower end of the water delivery channel 111 is open and the upper end is located above the inner stator 105, a plurality of water holes 110 are provided on the outer wall of the upper end of the central shaft 104 near the water delivery channel 111, and a water collecting bucket 109 is fixedly provided on the outer wall of the central shaft 104 between the water holes 110 and the inner stator 105, and the outer shape of the water collecting bucket 109 is a conical shell shape that is wide at the top and narrow at the bottom. Through the above-mentioned specific structural design, when water enters the outer rotating shell 107 through the connection between the bearing 108 and the central pipe 1, the water is collected by the water collecting bucket 109, and the water is discharged through the water holes 110 and the water delivery channel 111 in turn, which greatly improves the waterproof sealing performance of the fan body.

[0049] A temperature sensor 10 for detecting the temperature of the air inside the upper ventilation duct 2 is arranged inside the upper ventilation duct 2 , and an output end of the temperature sensor 10 is electrically connected to an input end of the digital display control panel 9 .

[0050] Working principle and technical effect of the present invention:

[0051] When in use, the fan body is running, and driven by the rotation of the fan blades 113, an airflow from bottom to top is formed in the central pipe 1, and the airflow is sucked from the lower ventilation pipe 3 and discharged from the upper ventilation pipe 2. When the fan body needs to be cooled, the second water pump 701 of the water supply structure 7 sequentially introduces water into the central pipe 1 through the water suction pipe 702, the water outlet pipe 703, the water outlet hole 704 and the water outlet nozzle 706, wherein the water outlet hole 704 introduces the water into the spiral water guide groove formed by the spiral liquid guide channel 101 and the inner wall of the central pipe 1, and when the water in the spiral water guide groove flows, the water flows downward along the inner wall of the central pipe 1 through the drip hole 103, thereby forming a water flow on the inner wall of the central pipe 1. Water curtain, in addition, the water liquid sprayed from the water nozzle 706 is sprayed toward the fan blades 113, and water mist is formed when the fan blades 113 rotate and cut at a high speed, thereby realizing rapid cooling of the fan body. In addition, in the event of a fire, the central pipe 1, the upper ventilation pipe 2 and the lower ventilation pipe 3 can cooperate to discharge the smoke. At this time, the water curtain and the water mist can absorb the heat and particulate impurities in the smoke, and gather and flow downward. The water liquid flowing downward is filtered by the filter layer 303, and then continues to flow downward and falls into the bottom of the lower ventilation pipe 3. The return water cooling structure 6 recycles the water liquid into the water tank 5, thereby realizing independent supply of water liquid and avoiding damage to the water supply pipe in the event of a fire.

[0052] When the return water cooling structure 6 recycles the water, the digital display control panel 9 controls the opening of the solenoid valve 604 and the first water pump 606, and the first water pump 606 sequentially delivers the water into the water tank 5 through the lower liquid extraction pipe 605, the liquid guide joint 603, the cooling pipe sheet 601 and the upper liquid outlet pipe 602, wherein the outer contour of the cooling pipe sheet 601 is a continuous S-shape, which is used to increase the cooling area of ​​the cooling pipe sheet 601;

[0053] When the temperature sensor 10 detects that the temperature exceeds a certain temperature, the digital display control panel 9 controls the motor 405 to drive the opening and closing rotating plate 403 to rotate to a horizontal state, so that the outer edges of the opening and closing rotating plate 403 are respectively sealed with the upper limit sealing strip 402 and the lower limit sealing strip 406, thereby disconnecting the upper ventilation duct 2. The digital display control panel 9 controls the solenoid valve 604 to disconnect the lower liquid extraction pipe 605, and water accumulates in the lower ventilation duct 3 until a U-shaped water seal is formed at the connection between the L-shaped pipe 302 and the central pipe 1, thereby disconnecting and sealing the lower ventilation duct 3 to prevent the fire from spreading outward.

[0054] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An external rotor high frequency fan, characterized in that: The invention comprises a central pipe (1) and a digital display control panel (9), wherein the central pipe (1) is arranged axially and vertically and contains a fan body capable of forming an airflow from bottom to top, and a spiral liquid guide channel (101) for forming a spiral water flow flowing downward is arranged on the inner side wall of the central pipe (1); The upper and lower ends of the central pipe (1) are respectively sealedly connected to an upper ventilation pipe (2) and a lower ventilation pipe (3), and an opening and closing structure (4) for controlling the air flow in the upper ventilation pipe (2) is provided inside the upper ventilation pipe (2); A water tank (5) is provided on one side of the central pipe (1); a return water cooling structure (6) is provided between the bottom of the water tank (5) and the bottom end of the lower ventilation pipe (3) for cooling the water liquid in the ventilation pipe (3) and transporting it back to the water tank (5) for recycling; and a water supply structure (7) is provided on the water tank (5) for supplying water liquid to the central pipe (1) to absorb smoke impurities and reduce the temperature.

2. According to claim 1, an external rotor high frequency fan is characterized in that: An upper cover (102) is provided at the upper end of the spiral liquid guiding channel (101); the cross-sectional shape of the spiral liquid guiding channel (101) is L-shaped; a spiral water guiding groove is formed between the spiral liquid guiding channel (101) and the inner wall of the central pipe (1); a plurality of water dripping holes (103) are provided at the bottom of the spiral liquid guiding channel (101) near the inner wall of the central pipe (1) along the spiral line direction; the cross-sectional area of ​​the water dripping holes (103) is less than one tenth of the cross-sectional area of ​​the spiral water guiding groove.

3. The outer rotor high frequency fan according to claim 1, characterized in that: The water supply structure (7) comprises a second water pump (701) arranged in the water tank (5); the water inlet of the second water pump (701) is connected to one end of a water suction pipe (702); the other end of the water suction pipe (702) extends to the inner bottom surface of the water tank (5); the water outlet of the second water pump (701) is connected to one end of a water outlet pipe (703); the other end of the water outlet pipe (703) passes through the water tank (5), the central pipeline (1) and the spiral liquid guide channel (101) in sequence. ) and extends into the central pipe (1) and is connected to an annular water pipe (705); a plurality of water outlet nozzles (706) are arranged on the lower side of the annular water pipe (705) along its circumferential direction; a water outlet hole (704) for introducing water into the spiral liquid guiding channel (101) is provided on the water outlet pipe (703) located in the spiral liquid guiding channel (101); and the output end of the digital display control panel (9) is electrically connected to the input end of the second water pump (701).

4. The outer rotor high frequency fan according to claim 1, characterized in that: The opening and closing structure (4) comprises an inner sleeve (401) fixedly sleeved in the upper ventilation pipe (2); an opening and closing rotating plate (403) is arranged in the inner sleeve (401); the opening and closing rotating plate (403) is rotatably arranged in the inner sleeve (401) via a rotating shaft (404); a motor (405) is fixedly arranged on the upper ventilation pipe (2) for driving the opening and closing rotating plate (403) to rotate under the support of the rotating shaft (404); an upper limit sealing strip (402) is arranged on the inner side wall of the upper port of the inner sleeve (401); and a lower end of the inner sleeve (401) is provided with a sealing strip (402) for sealing the upper end of the inner sleeve (401). A lower limit sealing strip (406) is provided on the inner wall of the port. When the motor (405) drives the opening and closing rotating plate (403) to rotate to a horizontal state, the opening and closing rotating plate (403) cooperates with the upper limit sealing strip (402) and the lower limit sealing strip (406) to disconnect the upper ventilation duct (2). When the motor (405) drives the opening and closing rotating plate (403) to rotate to a set state, the upper ventilation duct (2) is in an open state and is connected to the central duct (1). The output end of the digital display control panel (9) is electrically connected to the input end of the motor (405).

5. The outer rotor high frequency fan according to claim 1, characterized in that: One side of the lower ventilation duct (3) is connected to a smoke inlet duct (301) via an L-shaped duct (302); the axial direction of the lower ventilation duct (3) and the axial direction of the smoke inlet duct (301) are arranged perpendicular to each other; a filter layer (303) is arranged in the lower ventilation duct (3) below the L-shaped duct (302); the filter layer (303) has an outer shape of a cone that is wide at the top and narrow at the bottom.

6. The outer rotor high frequency fan according to claim 1, characterized in that: The return water cooling structure (6) comprises a first water pump (606) arranged below the water tank (5); the water inlet of the first water pump (606) is connected to one end of a lower liquid extraction pipe (605); the other end of the lower liquid extraction pipe (605) extends to the inside of the bottom end of the lower ventilation pipe (3); the water outlet of the first water pump (606) is connected to a liquid guide joint (603); and a solenoid valve (604) is arranged on the lower liquid extraction pipe (605); The return water cooling structure (6) also includes an upper liquid outlet pipe (602) arranged in the water tank (5), the upper end of the upper liquid outlet pipe (602) extends to the inner top surface of the water tank (5), the lower end of the upper liquid outlet pipe (602) passes through the bottom side of the water tank (5) and is connected to the liquid guide joint (603) through the cooling pipe plate (601), and the output end of the digital display control panel (9) is electrically connected to the input end of the solenoid valve (604) and the first water pump (606), respectively.

7. The outer rotor high frequency fan according to claim 1, characterized in that: A liquid adding pipe (501) is arranged on the upper side of the water tank (5), and a sealing cover (502) is detachably arranged on the liquid adding pipe (501). A liquid level sensor (8) for detecting the height of the liquid level inside the water tank (5) is arranged on the inner top surface of the water tank (5). A support plate (503) is arranged on the water tank (5), and the two ends of the support plate (503) are respectively fixedly connected to the water tank (5) and the central pipe (1). The outer shape of the water tank (5) is a rectangular parallelepiped. Support feet are fixedly arranged at the four corners of the lower side of the water tank (5). The output end of the liquid level sensor (8) is electrically connected to the input end of the digital display control panel (9).

8. The outer rotor high frequency fan according to claim 1, characterized in that: The fan body comprises a central shaft (104) arranged in a central pipe (1), the two ends of the central shaft (104) being fixedly arranged in the central pipe (1) via support shafts (112), an inner stator (105) being arranged on the central shaft (104), an outer rotor (106) being rotatably arranged on the outer side of the inner stator (105), an outer rotating shell (107) being fixedly arranged on the outer side of the outer rotor (106), a plurality of fan blades (113) being arranged on the outer side of the outer rotating shell (107) along its circumferential direction, and the outer rotating shell (107) being rotatably connected to the central shaft (104) via a bearing (108).

9. The outer rotor high frequency fan according to claim 8, characterized in that: A water delivery channel (111) is provided in the central shaft (104), the lower end of the water delivery channel (111) is open and the upper end is located above the inner stator (105), a plurality of water holes (110) are provided on the outer wall of the upper end of the central shaft (104) close to the water delivery channel (111), and a water collecting hopper (109) is fixedly provided on the outer wall of the central shaft (104) between the water holes (110) and the inner stator (105), and the outer shape of the water collecting hopper (109) is a conical shell shape that is wide at the top and narrow at the bottom.

10. The outer rotor high frequency fan according to claim 1, characterized in that: A temperature sensor (10) for detecting the temperature of the air inside the upper ventilation duct (2) is arranged inside the upper ventilation duct (2), and an output end of the temperature sensor (10) is electrically connected to an input end of a digital display control panel (9).

Images