High-temperature-resistant large ceiling fan

Abstract

The invention belongs to the technical field of household ventilation electric appliances, and particularly relates to a high-temperature-resistant large ceiling fan which comprises a hoisting assembly and a control box for controlling starting, stopping and speed regulation of a motor, the motor is arranged at the bottom of a vertical rod of the hoisting assembly, and multiple sets of fan blades are installed on the motor; the motor comprises an upper end cover, a lower end cover, an outer rotor assembly and a stator assembly with a shaft, the multiple sets of fan blades are installed on the upper end cover, and the vertical rod is connected with a rotor shaft of the stator assembly with the shaft. A protective cover sleeves the outer part of the outer rotor assembly and is positioned below the fan blades; an upper cover opening of the protective cover is connected with the upper end cover through a cushion block and a connecting piece; a plurality of groups of heat dissipation holes are formed in the protective cover; the high-temperature-resistant large ceiling fan can be used in a high-temperature space for a long time, uniform low-speed air flow can be stably provided, and the environment temperature consistency of the whole space is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of household ventilation appliance technology, and in particular relates to a high-temperature resistant large ceiling fan. Background Technology

[0002] With the development of the baking industry, more and more home kitchens are being renovated into baking rooms with baking functions. Baking rooms require a high-temperature resistant ventilation system that can evenly and gently distribute heat throughout the baking room to ensure the consistency of the quality of baked goods.

[0003] Household ceiling fans on the market rely on long and wide blades and low-speed rotation to provide even and gentle airflow. However, their motors are generally designed for use in low-temperature environments, such as 35-45℃, and cannot be used in high-temperature environments. Furthermore, the motor body is exposed to the outside. Therefore, the use of a baking room will cause the hot airflow to bake the motor body, which will further affect the normal use of the motor in high-temperature environments.

[0004] Therefore, in view of the shortcomings of existing technology, it is necessary to provide a large ceiling fan that can be installed in high-temperature environments. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a high-temperature resistant large ceiling fan, comprising a mounting assembly and a control box for controlling the start, stop, and speed adjustment of the motor. A motor is mounted at the bottom of the vertical rod of the mounting assembly, and multiple sets of fan blades are installed on the motor. The motor includes an upper end cover, a lower end cover, an outer rotor assembly, and a stator assembly with a shaft. The multiple sets of fan blades are mounted on the upper end cover. The vertical rod is connected to the rotor shaft of the stator assembly. A protective cover is fitted around the outer rotor assembly and below the fan blades, and the upper opening of the protective cover is connected to the upper end cover via a pad and a connector. Multiple sets of heat dissipation holes are provided on the protective cover.

[0006] In a preferred embodiment, the outer rotor assembly includes a rotor housing, a magnet fixing frame, a magnet body, and a heat dissipation aluminum cylinder assembled in sequence.

[0007] In a preferred embodiment, the stator assembly with shaft comprises a winding insulation frame, slotted paper, copper wire winding, rotor shaft, stator components, and high-temperature bearing assembled sequentially.

[0008] In a preferred embodiment, the diameter of the upper opening of the protective cover is smaller than the diameter of the bottom sealing end. The bottom of the protective cover is equipped with a docking transmission assembly that connects with the rotor shaft. Multiple sets of heat dissipation holes are opened on the inclined outer ring surface of the protective cover. The protective cover is equipped with a squeezing opening and closing assembly for opening or closing the heat dissipation holes. A temperature sensor is installed inside the protective cover. The squeezing opening and closing assembly is connected to the docking transmission assembly.

[0009] In a preferred embodiment, the docking transmission assembly includes a docking shaft rotatably mounted on the bottom of the protective cover via a bearing, a square hole opened in the docking shaft, a square rod movably inserted into the square hole, a metal ring insulated on the top of the square rod, an elastic element connecting the metal ring and the square rod, and an electromagnetic suction block insulated on the bottom of the rotor shaft. The outer ring of the metal ring is insulated with multiple L-shaped support rods, and the vertical insertion rods of the L-shaped support rods are inserted into the insertion holes opened at the bottom of the protective cover.

[0010] In a preferred embodiment, the compression opening and closing assembly includes a sealing post that is movably inserted into the heat dissipation hole, a connecting strip that connects multiple sealing posts, a guide post fixed at both ends of the connecting strip, an elastic sheet installed on the outer ring surface of the protective cover, and an L-shaped pressure rod that is connected to the docking shaft and extends to the outer ring surface of the protective cover. The outer end of the guide post extends out of the heat dissipation hole and connects to the elastic sheet, and the two ends of the elastic sheet are flush with each other and fit against the outer ring surface of the protective cover. The vertical inclined bar of the L-shaped pressure rod is in contact with the elastic sheet.

[0011] In a preferred embodiment, the compression opening and closing assembly further includes a support ring installed on the outer surface of the protective cover near the top, and the vertical inclined rod of the L-shaped pressure rod is provided with a support groove that movably cooperates with the support ring.

[0012] In a preferred embodiment, a collection chamber is formed inside the horizontal bar of the L-shaped pressure bar, and a scraper is installed on the wall of the collection chamber, with the scraper contacting the bottom of the protective cover; a guide groove is opened on the docking shaft to connect the collection chamber and the square hole, a collection box is installed at the bottom of the docking shaft, and a drain valve is installed at the bottom of the collection box.

[0013] The present invention has the following beneficial effects: 1. The high-temperature resistant ceiling fan provided by this invention can be used for a long time in a space with an ambient temperature of 100-120℃, and can stably provide uniform low-speed airflow to ensure the consistency of the ambient temperature of the entire space. 2. The protective cover provides high-temperature protection and dust and oil protection for the outer rotor assembly of the motor. The protective cover is not in contact with the outer rotor assembly, and the upper opening of the protective cover is open. In addition, the heat dissipation holes on the protective cover allow the motor to dissipate heat fully during long-term use. This prevents the heat generated by the motor from accumulating inside the protective cover due to the protective cover sealing the outer rotor assembly, which would further affect the safety and service life of the ceiling fan motor in high-temperature environments.

[0014] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a high-temperature resistant ceiling fan according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the control box and the motor according to an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of a motor according to an embodiment of the present invention; Figure 4 This is an exploded view of the external rotor assembly according to an embodiment of the present invention; Figure 5 This is an exploded view of a shafted stator assembly according to an embodiment of the present invention; Figure 6 This is a diagram showing the fit between the protective cover and the rotor shaft according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the structure of the protective cover according to an embodiment of the present invention; Figure 8 This is a cross-sectional view of the protective cover according to an embodiment of the present invention; Figure 9 The present invention discloses an embodiment of the invention. Figure 8 Enlarged view of a portion of point A in the middle.

[0017] In the diagram: 1. Motor; 11. Upper end cover; 12. Lower end cover; 13. Outer rotor assembly; 131. Rotor housing; 132. Magnet fixing frame; 133. Magnet body; 134. Heat dissipation aluminum cylinder; 14. Stator assembly with shaft; 141. Winding insulation frame; 142. Slot paper; 143. Copper wire winding; 144. Stator component; 145. Rotor shaft; 146. High-temperature bearing; 2. Wind blades; 3. Control box; 4. Lifting components; 5. Galvanized iron pipes; 6. Power cord; 7. Protective cover; 71. Heat dissipation holes; 8. Connecting transmission assembly; 81. Connecting shaft; 811. Square hole; 812. Guide channel; 82. Square rod; 83. Metal ring; 84. Elastic element; 85. Electromagnetic chuck; 86. L-shaped support rod; 9. Extrusion opening and closing assembly; 91. Sealing column; 92. Connecting strip; 93. Guide column; 94. Elastic sheet; 95. L-shaped pressure bar; 96. Vertical diagonal bar; 97. Collection chamber; 98. Support ring; 99. Scraper; 10. Collection box. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0020] Please see Figures 1-9 As shown, the present invention is a high-temperature resistant large ceiling fan, including a hoisting assembly 4 and a control box 3 for controlling the start, stop and speed adjustment of a motor 1. The invention is characterized in that a motor 1 is installed at the bottom of the vertical rod of the hoisting assembly 4, and multiple sets of fan blades 2 are installed on the motor 1. The motor 1 includes an upper end cover 11, a lower end cover 12, an outer rotor assembly 13, and a stator assembly with a shaft 14. Multiple sets of fan blades 2 are mounted on the upper end cover 11. The vertical rod is connected to the rotor shaft 145 of the stator assembly with a shaft 14. A protective cover 7 is fitted around the outside of the outer rotor assembly 13 and below the fan blade 2, and the upper opening of the protective cover 7 is connected to the upper end cover 11 by a pad and a connector; the protective cover 7 has multiple sets of heat dissipation holes 71. Specifically, the hoisting assembly 4 includes a channel steel installed on the top of the wall and steel vertical rods installed on the channel steel for stably suspending the motor 1; the motor 1 is a high-temperature resistant external rotor motor with an IP65 structure; the control box 3 is an iron-iron box, which houses a frequency converter and control system, and the power cable 6 is connected to the motor 1. The power cable 6 of the motor 1 is sheathed with silicone rubber and is resistant to 180 degrees Celsius. The conduit of the power cable 6 uses several JDG galvanized iron pipes 5 to increase protection; the control box 3 is set under normal external temperature conditions and controls the motor 1, which operates in a high-temperature environment inside, through the power cable 6. The motor 1 drives the fan blade 2 to rotate, providing a continuous and stable airflow; the fan blade 2 is an arc-shaped extruded aluminum fan blade 2; multiple sets of heat dissipation holes 71 are arranged in a circumferential array on the outer surface of the protective cover 7, and each set of heat dissipation holes 71 has at least 5 vertically arranged holes; The protective cover 7 can provide high-temperature protection and dust and oil protection for the outer rotor assembly 13 of the motor 1, preventing damage to the motor 1, especially the outer rotor assembly 13 of the outer rotor motor 1, when the large ceiling fan of the present invention is used for ventilation in a household kitchen (especially a specially modified baking room). Due to the high temperature and a lot of dust and grease in the baking room, the motor 1 that drives the fan blade 2 to rotate is exposed to the outside, which will cause the motor 1 to be damaged by long-term use in a high-temperature environment. The upper opening of the protective cover 7 is installed on the outer ring surface of the upper cover 11 through multiple pads and bolts, so that the protective cover 7 and the outer rotor assembly 13 are not in contact. The upper opening of the protective cover 7 is also in an open state. In addition, with the heat dissipation holes 71 opened on the protective cover 7, the motor 1 used for a long time can be fully dissipated. This prevents the heat generated by the motor 1 during long-term operation from accumulating inside the protective cover 7 because the protective cover 7 is sealed and wrapped around the outer rotor assembly 13. This would further affect the safety and service life of the motor 1 of the large ceiling fan in high-temperature environments.

[0021] In a preferred embodiment of the present invention, the outer rotor assembly 13 includes a rotor housing 131, a magnet fixing frame 132, a magnet body 133, and a heat dissipation aluminum cylinder 134 assembled in sequence. Specifically, the rotor housing 131 is a cylindrical housing machined from 45# steel. The magnet fixing bracket 132 is welded to the inner wall of the rotor housing 131. The magnet body 133 is model N35UH, which can withstand a maximum temperature of 150 degrees Celsius without demagnetizing. It is placed in the square slot of the magnet fixing bracket 132 and is tightly attached to the inner wall of the rotor housing 131 by magnetic force and glue. Through the combined action of the magnet fixing bracket 132, magnetic force, and glue, it is ensured that the magnet body 133 can still be firmly attached to the inner wall of the rotor housing 131 at a high temperature of 120 degrees Celsius, thus ensuring the normal operation of the motor 1.

[0022] In a preferred embodiment of the present invention, the shaft stator assembly 14 includes a winding insulation frame 141, slotted paper 142, copper wire winding 143, rotor shaft 145, stator component 144 and high temperature resistant bearing 146 assembled in sequence. Specifically, there is one winding insulation frame 141 on the top and one on the bottom; the winding insulation frame 141 is made of high-temperature resistant nylon injection molding, which can withstand a temperature of 180 degrees Celsius, and is fixed to the top and bottom of the iron core by three cylinders at the bottom; the slot paper 142 is made of H-grade slot paper 142, which can withstand a temperature of 180 degrees Celsius, and is tightly attached to the inner wall of the slot of the stator component 144; the copper wire winding 143 is made of 200-degree (anti-corona) copper wire, which can withstand a temperature of 180 degrees Celsius, and is wound on the teeth of the iron core stator component 144 by an automatic winding machine; the high-temperature bearing 146 uses special grease and can withstand a high temperature of 180 degrees Celsius.

[0023] In a preferred embodiment of the present invention, the diameter of the upper opening of the protective cover 7 is smaller than the diameter of the bottom sealing end. The bottom of the protective cover 7 is equipped with a docking transmission assembly 8 that docks with the rotor shaft 145. Multiple sets of heat dissipation holes 71 are opened on the inclined outer ring surface of the protective cover 7. The protective cover 7 is equipped with a compression opening and closing assembly 9 for opening or closing the heat dissipation holes 71. A temperature sensor is installed inside the protective cover 7. The compression opening and closing assembly 9 is connected to the docking transmission assembly 8. Specifically, in order to prevent dust or grease accumulated on the surface of the protective cover 7 from entering the interior of the protective cover 7 through the heat dissipation holes 71, which would cause excessive grease or dust to adhere to the surface of the outer rotor assembly 13, not only would the motor 1, which has been used for a long time, be unable to function properly due to excessive oil on its surface, but it would also affect the heat dissipation effect of the motor 1 itself. Therefore, when the temperature sensor detects that the temperature inside the protective cover 7 is higher than the threshold, the control system in the control box 3 will control the docking transmission assembly 8 to connect with the rotor shaft 145. Since the rotor shaft 145 is fixedly connected to the vertical rod of the hoisting assembly 4, when the outer rotor assembly 13 drives the protective cover 7 to rotate, the docking transmission assembly 8 will make some parts of the extrusion opening and closing assembly 9 relatively fixed. Since the other parts of the extrusion opening and closing assembly 9 are movable and sealed in the heat dissipation hole 71, when the protective cover 7 rotates, the fixed parts of the extrusion opening and closing assembly 9 will extrude and release the movable and sealed parts, so that the movable parts can frequently be in the opening and sealing state in the heat dissipation hole 71, thereby allowing the hot airflow inside the protective cover 7 to be discharged from the protective cover 7 in a compressed or sucked state, thereby accelerating the heat dissipation effect of the motor 1 during long-term operation. When the docking transmission assembly 8 is disconnected from the rotor shaft 145, it will connect with the protective cover 7. When the protective cover 7 rotates with the outer rotor assembly 13, the squeezing opening and closing assembly 9 can rotate synchronously with the protective cover 7, which makes it easier to seal the heat dissipation holes 71 on the protective cover 7.

[0024] In a preferred embodiment of the present invention, the docking transmission assembly 8 includes a docking shaft 81 rotatably mounted on the bottom of the protective cover 7 via a bearing, a square hole 811 opened in the docking shaft 81, a square rod 82 movably inserted into the square hole 811, a metal ring 83 insulated on the top of the square rod 82, an elastic element 84 connecting the metal ring 83 and the square rod 82, and an electromagnetic suction block 85 insulated on the bottom of the rotor shaft 145. The outer ring surface of the metal ring 83 is insulatedly mounted with a plurality of L-shaped support rods 86, and the vertical insertion rods of the L-shaped support rods 86 are inserted into the insertion holes opened at the bottom of the protective cover 7. Specifically, the bottom end of the docking shaft 81 extends below the protective cover 7. The square hole 811 and the square rod 82 both adopt a quadrilateral structure, while the elastic element 84 is a spring structure and is sleeved on the outside of the square rod 82. The L-shaped support rod 86 is set in two or four sets and is installed on the metal ring 83 in a circumferentially equidistant manner. The number of insertion holes opened at the bottom of the protective cover 7 is an even multiple of two, such as 4, 6, 8, etc., and is arranged in a circumferential array. It is necessary to control the distance from the upper surface of the metal ring 83 to the bottom of the rotor shaft 145 so that the adsorption force generated by the electromagnetic suction block 85 after power-on can accurately adsorb the metal ring 83 and pull it upward. At the same time, it is also necessary to control the length of the vertical insertion rod of the L-shaped support rod 86 inserted into the insertion hole so that when the metal ring 83 is adsorbed and attached to the bottom of the rotor shaft 145, the vertical insertion rod can be simultaneously detached from the insertion hole. Therefore, when the docking shaft 81 and the rotor shaft 145 need to be connected to each other, the electromagnetic suction block 85 is energized. At this time, the attraction force of the electromagnetic suction block 85 will pull the metal ring 83 upward and put it in a close fit. At this time, the square rod 82 will slide upward in the square hole 811, the elastic element 84 will be stretched, and the upward-moving metal ring 83 will drive the vertical insertion rods of multiple L-shaped support rods 86 to disengage from the insertion hole. This allows the rotor shaft 145, which is in a fixed state, to limit the rotation of the docking shaft 81 through the cooperation of the square rod 82 and the square hole 811. When the protective cover 7 rotates with the outer rotor assembly 13, the docking shaft 81 will be in a relatively fixed state. When the docking shaft 81 needs to rotate synchronously with the protective cover 7, the electromagnetic suction block 85 needs to be de-energized to disengage from the metal ring 83. Then, the elastic restoring force of the elastic element 84 will pull the square rod 82 down in the square hole 811. At this time, the bottom ends of the vertical insertion rods of multiple L-shaped support rods 86 will be inserted into the aligned insertion holes. Then, when the protective cover 7 rotates, the docking shaft 81 will be driven to rotate synchronously through the L-shaped support rods 86, the metal ring 83 and the square rod 82.

[0025] As a preferred embodiment of the present invention, the extrusion opening and closing assembly 9 includes a sealing post 91 that is movably inserted into the heat dissipation hole 71, a connecting strip 92 that connects multiple sealing posts 91, a guide post 93 fixed at both ends of the connecting strip 92, an elastic sheet 94 installed on the outer ring surface of the protective cover 7, and an L-shaped pressure rod 95 that is connected to the docking shaft 81 and extends to the outer ring surface of the protective cover 7. The outer end of the guide post 93 extends out of the heat dissipation hole 71 and is connected to the elastic sheet 94. The two ends of the elastic sheet 94 are flush with each other and fit against the outer ring surface of the protective cover 7. The vertical inclined bar 96 of the L-shaped pressure rod 95 is in contact with the elastic sheet 94. Furthermore, the compression opening and closing assembly 9 also includes a support ring 98 installed on the protective cover 7 near the top outer ring surface, and the vertical inclined bar 96 of the L-shaped pressure rod 95 is provided with a support groove that movably cooperates with the support ring 98. Specifically, the protective cover 7 has five heat dissipation holes 71, arranged vertically. Therefore, there are three sealing posts 91, which are movably inserted into the three vertically arranged heat dissipation holes 71. The upper and lower guide posts 93 are movably inserted into the heat dissipation holes 71 at both ends of the vertical arrangement. The width of the vertical inclined rod 96 connecting the long strip 92 and the L-shaped pressure rod 95 is smaller than the diameter of the heat dissipation hole 71. The vertical inclined rod 96 has a relief groove at the three middle heat dissipation holes 71 so that when the sealing post 91 is opened, the vertical inclined rod 96 will not block the heat dissipation hole 71. The connecting long strip 92 is located on the inner ring surface of the protective cover 7. A spring is connected between the middle part of the elastic piece 94 and the outer ring surface of the protective cover 7. The spring is sleeved on the outside of the guide post 93 so that when the elastic piece 94 is not subjected to pressure, the middle part of the connection between the elastic piece 94 and the guide post 93 is in a bulging state. Therefore, when the docking shaft 81 is connected to the rotor shaft 145, the L-shaped pressure bar 95 will also be in a fixed state. When the protective cover 7 rotates, the vertical inclined bar 96 of the L-shaped pressure bar 95, which is in a fixed state, will first contact the end of the elastic plate 94 and continuously move along the outer side of the elastic plate 94. When the vertical inclined bar 96 moves to the middle of the bulge of the elastic plate 94, the vertical inclined bar 96 will exert a squeezing force on the elastic plate 94, causing the elastic plate 94 to push the guide post 93 to move into the protective cover 7. Then, the connecting strip 92 will drive multiple sealing posts 91 to disengage from the heat dissipation hole 71, thereby facilitating the opening of the heat dissipation hole 71. When the vertical diagonal bar 96 detaches from the elastic plate 94, the elastic restoring force of the elastic plate 94 and the elastic thrust of the matching spring will cause the guide post 93 to extend outward from the protective cover 7. Then, the connecting strip 92 will drive multiple sealing posts 91 to be inserted into the heat dissipation hole 71, thus facilitating the sealing of the heat dissipation hole 71. Since the connecting strip 92 is located on the inner ring surface of the protective cover 7, the moving connecting strip 92 will limit the movement of the sealing posts 91 and the guide post 93, preventing them from moving excessively and failing to accurately seal the heat dissipation hole 71. When the protective cover 7 rotates, the cooperation between the fixed support ring 98 and the support slot can limit and guide the vertical inclined rod 96, preventing the top of the vertical inclined rod 96 from tilting or becoming crooked when it is pressed against the elastic sheet 94, which would affect the precise pressing of the vertical inclined rod 96 against the elastic sheet 94. As the vertical inclined bar 96 of the stationary L-shaped pressure bar 95 continuously presses against and contacts the elastic sheet 94, multiple sealing posts 91 reciprocate within the heat dissipation hole 71. This not only opens the heat dissipation hole 71, allowing the hot airflow inside the protective cover 7 to flow rapidly, but also generates a certain suction force within the heat dissipation hole 71 through the reciprocating sealing posts 91. This creates a disturbance to the hot airflow inside the protective cover 7, further accelerating the dissipation of heat within the protective cover 7.

[0026] In a preferred embodiment of the present invention, a collection chamber 97 is formed inside the horizontal bar of the L-shaped pressure rod 95, and a scraper 99 is installed on the wall of the collection chamber 97, and the scraper 99 contacts the bottom of the protective cover 7; a guide groove 812 is provided on the docking shaft 81 to connect the collection chamber 97 and the square hole 811, and a collection box 10 is installed at the bottom of the docking shaft 81, and a drain valve is installed at the bottom of the collection box 10; Specifically, the collection chamber 97 is inclined towards the docking shaft 81, and the scraper 99 is inclinedly installed on the back of the collection chamber 97 near the rotation direction of the protective cover 7. The blade of the scraper 99 is in contact with the bottom of the protective cover 7. Therefore, when the protective cover 7 rotates relative to the L-shaped pressure rod 95, the scraper 99 contacts the bottom of the protective cover 7 and scrapes away the oil or dust adhering to the bottom of the protective cover 7. The scraped-off dust or oil will fall into the inclined collection chamber 97 and then enter the collection box 10 for collection through the guide chute 812 and the square hole 811. With the setting of the drain valve, the operator can connect the suction pipe of the suction pump to the drain valve to clean the oil or dust collected in the collection box 10 when the ceiling fan is not working and it is safe to do so. At the same time, cleaning agent can be injected into the collection box 10, and the cleaning agent can enter multiple collection chambers 97 through the guide chute 812 to achieve simple cleaning of the collection chamber 97.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-temperature resistant large ceiling fan, comprising a mounting assembly and a control box for controlling the start / stop and speed regulation of the motor, characterized in that, A motor is installed at the bottom of the vertical rod of the hoisting assembly, and multiple sets of fan blades are installed on the motor; The motor includes an upper end cover, a lower end cover, an outer rotor assembly, and a stator assembly with a shaft. Multiple sets of fan blades are mounted on the upper end cover, and the vertical rod is connected to the rotor shaft of the stator assembly with a shaft. The outer rotor assembly is fitted with a protective cover outside and below the fan blades, and the upper opening of the protective cover is connected to the upper end cover by a pad and a connector; the protective cover has multiple sets of heat dissipation holes.

2. The high-temperature resistant ceiling fan according to claim 1, characterized in that, The outer rotor assembly includes a rotor housing, a magnet fixing frame, a magnet body, and a heat dissipation aluminum cylinder assembled in sequence.

3. A high-temperature resistant ceiling fan according to claim 1, characterized in that, The shafted stator assembly includes, in sequence, a winding insulation frame, slotted paper, copper wire winding, rotor shaft, stator components, and high-temperature bearings.

4. A high-temperature resistant ceiling fan according to claim 1, characterized in that, The diameter of the upper opening of the protective cover is smaller than the diameter of the bottom sealing end. The bottom of the protective cover is equipped with a docking transmission assembly that connects with the rotor shaft. Multiple sets of heat dissipation holes are opened on the inclined outer ring surface of the protective cover. The protective cover is equipped with a squeezing opening and closing assembly for opening or closing the heat dissipation holes. A temperature sensor is installed inside the protective cover. The squeezing opening and closing assembly is connected to the docking transmission assembly.

5. A high-temperature resistant ceiling fan according to claim 4, characterized in that, The docking transmission assembly includes a docking shaft rotatably mounted on the bottom of the protective cover via bearings, a square hole opened in the docking shaft, a square rod movably inserted into the square hole, a metal ring insulated on the top of the square rod, an elastic element connecting the metal ring and the square rod, and an electromagnetic suction block insulated on the bottom of the rotor shaft. The outer ring of the metal ring is insulated with multiple L-shaped support rods, and the vertical insertion rods of the L-shaped support rods are inserted into the insertion holes opened at the bottom of the protective cover.

6. A high-temperature resistant ceiling fan according to claim 5, characterized in that, The compression opening and closing assembly includes a sealing post that is movably inserted into the heat dissipation hole, a connecting strip that connects multiple sealing posts, a guide post fixed at both ends of the connecting strip, an elastic sheet installed on the outer ring surface of the protective cover, and an L-shaped pressure bar that is connected to the docking shaft and extends to the outer ring surface of the protective cover. The outer end of the guide post extends out of the heat dissipation hole and connects to the elastic sheet, and the two ends of the elastic sheet are flush with each other and fit against the outer ring surface of the protective cover. The vertical inclined bar of the L-shaped pressure rod is in contact with the elastic sheet.

7. A high-temperature resistant ceiling fan according to claim 6, characterized in that, The compression opening and closing assembly also includes a support ring installed on the outer surface of the protective cover near the top, and the vertical inclined rod of the L-shaped pressure rod is provided with a support groove that movably cooperates with the support ring.

8. A high-temperature resistant ceiling fan according to claim 5, characterized in that, The horizontal bar of the L-shaped pressure bar has a collection chamber inside, and the wall of the collection chamber is equipped with a scraper, which contacts the bottom of the protective cover; the docking shaft has a guide groove that connects the collection chamber and the square hole, the bottom of the docking shaft is equipped with a collection box, and the bottom of the collection box is equipped with a drain valve.

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