A brushless blower with heat dissipation and low noise

Abstract

The present invention relates to the technical field of brushless blowers, and discloses a brushless blower with low heat dissipation and noise, comprising a base, which is fixed to the ground by bolts; a heat dissipation mechanism, which is arranged on the base and comprises a heat dissipation shell and a heat dissipation hollow tube, the heat dissipation shell is fixedly installed on the top of the base by bolts and forms a package for a driving mechanism in the middle, and the heat dissipation hollow tube extends to the outer wall of the heat dissipation shell through a through hole in the outer wall of the heat dissipation shell; the inside of the brushless blower is cooled by a plurality of heat dissipation hollow tubes; the present invention increases the heat dissipation area of ​​the motor inside the brushless blower by arranging the heat dissipation mechanism, and while the heat dissipation hollow tube conducts heat, a cold air flow flows inside the heat dissipation hollow tube, thereby accelerating the heat dissipation efficiency of the heat dissipation hollow tube, and by arranging an air inlet pipe and an air outlet pipe, it is convenient to connect to an external air pump, a heat exchanger and other equipment, so as to dissipate heat more efficiently on the heat dissipation hollow tube, increase the heat dissipation mode, and further improve the heat dissipation efficiency inside the brushless blower.

Description

Technical Field

[0001] The invention relates to the technical field of brushless blowers, in particular to a heat-dissipating and low-noise brushless blower. Background Art

[0002] The blower is mainly composed of the following six parts: motor, air filter, blower body, air chamber, base (also oil tank), oil drip nozzle. The blower operates by the eccentric rotor offset in the cylinder, and the volume change between the blades in the rotor slot causes the air to be sucked in, compressed, and exhaled. The brushless blower is a type of blower, which uses a brushless motor to drive the blades to rotate, making the performance of the brushless blower even better:

[0003] A brushless blower is disclosed in the Chinese patent application publication number CN 116163975 A, comprising a frame component and a brushless motor mounted on the frame component; a flange component, the interior of which is hollow and has a receiving area for the frame component and the brushless motor, the frame component is mounted on the flange component through a connecting bracket, and a flexible connector is provided at the connecting position between the connecting bracket and the flange component. The brushless motor is installed through the frame component, and the frame component is assembled with the flange component through the connecting frame on the frame component. This flexible connection method can reduce the noise generated by the blower during operation.

[0004] However, when the brushless blower is in use, the internal heat of the blower is mainly dissipated through the airflow generated internally and the heat dissipation holes opened, and the heat dissipation speed is slow. Traditional magnetic conductors will also cause the motor to heat up higher when working, and the slow heat dissipation efficiency affects the operation of the motor. Summary of the invention

[0005] The object of the present invention is to provide a brushless blower with heat dissipation and low noise to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A heat dissipation and low-noise brushless blower, comprising a base, wherein the base is fixed to the ground by bolts;

[0008] A heat dissipation mechanism, the heat dissipation mechanism is arranged on the base, and includes a heat dissipation shell and a heat dissipation hollow tube. The heat dissipation shell is fixedly installed on the top of the base by bolts and forms a wrapping of the driving mechanism in the middle. The heat dissipation hollow tube extends to the outer wall of the heat dissipation shell through a through hole in the outer wall of the heat dissipation shell; the interior of the brushless blower is cooled by a plurality of heat dissipation hollow tubes;

[0009] A driving mechanism, the driving mechanism being arranged at the top of the base, and the driving mechanism causing the brushless blower to draw air by rotating the fan blades therein;

[0010] A limiting shell mechanism; the limiting shell mechanism is arranged at the top of the base, and the limiting shell mechanism limits the fan blades through a first limiting frame therein;

[0011] A connecting mechanism is arranged on the heat dissipation mechanism, and the connecting mechanism is used to install the air inlet and the air outlet of the heat dissipation mechanism through the mounting parts therein.

[0012] Optionally, the heat dissipation mechanism includes a connecting ring, a partition, a first connecting cavity, a second connecting cavity, a plurality of first connecting pipes, a plurality of second connecting pipes, a fixing rod, a first connecting frame, a second connecting frame, an air inlet pipe and an air outlet pipe;

[0013] The communication ring is fixedly mounted on one end of the heat dissipation hollow tube, the partition is fixedly mounted in the middle of the inner wall of the communication ring, the first communication cavity is formed between the lower part of the partition and the bottom end of the inner wall of the communication ring, the second communication cavity is formed between the upper part of the partition and the top end of the inner wall of the communication ring, one end of the heat dissipation hollow tube extends to the inside of the first communication cavity, and the other end extends to the inside of the second communication cavity;

[0014] A plurality of first connecting tubes and second connecting tubes are fixedly installed on the top of the connecting ring, one end of the first connecting tube extends to the inside of the first connecting cavity, one end of the second connecting tube extends to the inside of the second connecting cavity, the fixing rod is fixedly installed on the bottom end of the base, the first connecting frame is fixedly installed on one end of the fixing rod, the second connecting frame is fixedly installed on one end of the first connecting frame, the first connecting tube and the second connecting tube extend to the outside of the bottom end of the base, one end of the first connecting tube is fixedly installed on the outer wall of the first connecting frame, the second connecting tube is fixedly installed on the outer wall of the second connecting frame, the air inlet pipe is fixedly installed on the outer wall of the first connecting frame, and the air outlet pipe is fixedly installed on the outer wall of the second connecting frame.

[0015] Optionally, the first connecting tube and the second connecting tube are arranged alternately along the outside of the circular ring of the connecting ring, and are respectively connected to the first connecting cavity and the second connecting cavity where the connecting ring is located. The first connecting tube is connected to one end of the heat dissipation hollow tube through the first connecting cavity, and the second connecting tube is connected to the other end of the heat dissipation hollow tube through the second connecting cavity. The heat dissipation hollow tube is two parallel U-shaped copper tubes connected at one end, and both ends extend outward.

[0016] Optionally, the driving mechanism includes a winding mounting frame, a plurality of coils, a rotor, and a motor housing, wherein the motor housing is fixedly mounted on the top of the base, the winding mounting frame is fixedly mounted on the inner wall of the motor housing, a plurality of coils are wound on the winding mounting frame, the rotor is rotatably mounted on the winding mounting frame and the inner wall of the bearing, one end of the rotor extends to the outside of the top of the motor housing, and the fan blade is fixedly mounted on one end of the rotor extending to the outside of the top of the motor housing;

[0017] The motor housing is located on the inner cavity wall where the heat dissipation housing is located.

[0018] Optionally, a connecting piece is fixedly installed at one end of the rotor extending to the outside of the top of the motor housing, and the fan blades are fixedly installed at one end of the connecting piece. A slot is provided at the connection between the fan blades and the connecting piece, and threaded holes are provided on the slot wall and one side of the connecting piece. The positions of the threaded holes on one side of the connecting piece and the threaded holes on the slot wall correspond to each other, the connecting piece is engaged with the slot, and the fan blades are fixedly installed on one end of the rotor by bolts.

[0019] Optionally, a plurality of second balls are movably mounted on the bottom end of the fan blade, a second limit frame is fixedly mounted on the top end of the base, the second limit frame is arranged in a ring shape, the bottom end of the fan blade is engaged and fixed with a groove surrounded by the second limit frame, the second balls are located between the bottom end of the fan blade and the bottom end of the inner wall of the second limit frame, a limit ring is fixedly mounted on the bottom end of the outer wall of the fan blade, and engagement grooves are provided at both ends of the outer wall of the limit ring.

[0020] Optionally, the position-limiting housing mechanism comprises a fan housing, an annular protrusion, an inner gear ring, a rotating annular plate, a rotating groove, a rotating rod, a gear, a plurality of fixed columns, and a first ball bearing, wherein the fan housing is mounted on the top of the base, the annular protrusion and the inner gear ring are fixedly mounted on the bottom end of the inner wall of the fan housing, the inner gear ring is located at the top of the annular protrusion, the rotating groove is opened on the outer wall of the rotating annular plate, and the rotating groove is engaged with the annular protrusion;

[0021] The rotating annular plate rotates through the rotating groove of the outer wall and is installed on the inner side of the annular protrusion on the inner wall of the fan casing. A plurality of rotating holes are opened on the top of the rotating annular plate. A rotating protrusion is fixedly installed on the outer wall of the rotating rod. The rotating rod is rotatably installed on the inner wall of the rotating hole through the rotating protrusion. The gear is fixedly installed on the top of the rotating rod. Several gears are meshed with the inner gear ring. The first limit frame is fixedly installed on the bottom end of the rotating rod. The first limit frame is U-shaped. Several ball grooves are opened on both ends of the inner wall of the first limit frame. The first ball is movably installed on the wall of the ball groove. Several fixed columns are fixedly installed on the bottom end of the rotating annular plate.

[0022] Optionally, a plurality of fixing cylinders are fixedly installed on the outer edge of the top end of the base, the position of the fixing cylinders corresponds to the fixing columns, the fixing columns are engaged with the corresponding fixing cylinders, a plurality of arc grooves are opened on the edge of the top end of the base, a plurality of first fixing plates are fixedly installed on the bottom end of the outer wall of the fan casing, the first fixing plates are slidably installed on the corresponding arc groove walls, through holes are opened on the edge of the arc groove wall and one side of the first fixing plate, the first fixing plate is fixedly installed on the top end of the base by bolts, a plurality of second fixing plates are fixedly installed on the bottom end of the base, and an air outlet is fixedly installed on the outer wall of the fan casing.

[0023] Optionally, the opening of the first limit frame corresponds to the position of the limit ring, the limit ring is located between two ends of the inner wall of the first limit frame, and the first ball is located on the surface of the wall of the corresponding engaging groove.

[0024] Optionally, the connecting mechanism includes an air inlet frame, a mounting tube, a plurality of first fixing ears and a plurality of second fixing ears, the air inlet frame is fixedly mounted on the outer wall of the fan housing, the air inlet frame is communicated with the interior of the fan housing, and the mounting tube is fixedly mounted on one side of the air inlet frame;

[0025] The inner wall of the mounting tube is provided with threads, the mounting piece is fixedly mounted on one end of the air inlet pipe and the air outlet pipe, one end of the outer wall of the mounting piece is provided with external threads, a plurality of the first fixing ears are fixedly mounted on one end of the outer wall of the mounting tube, a plurality of the second fixing ears are fixedly mounted on one end of the outer wall of the mounting piece, and the first fixing ears and the second fixing ears are connected by bolts.

[0026] The present invention has at least the following beneficial effects:

[0027] (1) This scheme can increase the heat dissipation area of ​​the motor inside the brushless blower by setting a heat dissipation mechanism. While the heat is conducted out through the heat dissipation hollow tube, the cold air flows inside the heat dissipation hollow tube, thereby accelerating the heat dissipation efficiency of the heat dissipation hollow tube. In addition, by setting an air inlet pipe and an air outlet pipe, it is convenient to connect external air pumps, heat exchangers and other equipment, so as to dissipate heat more efficiently from the heat dissipation hollow tube, increase the heat dissipation methods, and further improve the heat dissipation efficiency inside the brushless blower.

[0028] (2) In this scheme, the fixing column at the bottom end of the rotating annular plate is inserted into the fixing cylinder to fix the rotating annular plate so that the rotating annular plate does not rotate. At this time, the fan casing is rotated to make the first fixing plate on the outer wall of the fan casing rotate synchronously in the arc groove until the through holes on the first fixing plate and the arc groove are aligned. At this time, the rotation of the inner gear ring drives the gear to rotate, so that the first limit frame rotates and extends out, and the two ends of the limit ring on the fan blade are clamped. The limit ring is supported by the first limit frame and the first ball, thereby supporting the bottom end of the outer wall of the fan blade. The bottom end of the fan blade is limited by the second limit frame, and the top end of the fan blade is fixed to one end of the rotor by bolts, so that the installation of the fan blade is more stable, the vibration of the surface of the fan blade when it rotates is reduced, the stability of the fan blade rotation is improved, the noise generated by the rotation of the fan blade is further reduced, and the installation of the limit casing mechanism is convenient;

[0029] (3) This solution can further increase the heat dissipation speed by connecting an existing air pump at one end of the air outlet pipe, connecting one end of the air pump outlet to the heat exchanger through a pipeline, and connecting the air inlet pipe to the outlet end of the heat exchanger. The installation parts are provided to facilitate the connection to an external air delivery device.

[0030] (4) This solution can reduce the weight of the brushless blower by setting the motor housing to a plastic housing with heat dissipation holes, compared with a metal housing, making the brushless blower lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work.

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is the installation diagram of the heat dissipation hollow tube of the present invention;

[0034] Figure 3 This is a cross-sectional view of the heat dissipation housing of the motor of the present invention;

[0035] Figure 4 This is a cross-sectional view of the motor housing of the present invention;

[0036] Figure 5 It is a cross-sectional view of the connecting ring of the present invention;

[0037] Figure 6 This is a fan blade installation diagram of the present invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0039] Figure 8 This is a diagram of the motor housing of the present invention;

[0040] Fig. 9 It is the installation diagram of the present invention;

[0041] Fig.10 This is a diagram of the heat dissipation hollow tube of the present invention.

[0042] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0043] 1. Base; 101. Arc groove; 102. Fixed cylinder; 103. Fan housing; 104. First fixed plate; 105. Annular protrusion; 106. Internal gear ring; 107. Second fixed plate; 2. Rotating annular plate; 201. Rotating groove; 202. Rotating rod; 203. Gear; 204. First limiting frame; 205. Fixed column; 206. First ball; 207. Fan blade; 208. Limiting ring; 209. Engaging groove; 210. Second ball; 211. Second limiting frame; 212. Air outlet; 3. Heat dissipation housing; 301, heat dissipation hollow tube; 302, connecting ring; 3021, partition; 303, first connecting cavity; 304, second connecting cavity; 305, first connecting pipe; 306, second connecting pipe; 307, first connecting frame; 308, second connecting frame; 309, air inlet pipe; 310, air outlet pipe; 311, fixing rod; 4, winding mounting frame; 401, coil; 402, rotor; 403, motor housing; 5, air inlet frame; 501, mounting pipe; 502, first fixing ear; 503, mounting piece; 504, second fixing ear. DETAILED DESCRIPTION

[0044] 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.

[0045] See also Figure 1-Figure 10The present invention provides a heat dissipation and low-noise brushless blower, comprising a base 1, which is fixed to the ground by bolts; a heat dissipation mechanism, which is arranged on the base 1, and comprises a heat dissipation shell 3 and a heat dissipation hollow tube 301, the heat dissipation shell 3 is fixedly installed on the top of the base 1 by bolts and forms a driving mechanism wrapping the middle part, and the heat dissipation hollow tube 301 extends to the outer wall of the heat dissipation shell 3 through the through hole of the outer wall of the heat dissipation shell 3; the inside of the brushless blower is dissipated by a plurality of heat dissipation hollow tubes 301; a driving mechanism, which is arranged at the top of the base 1, and the driving mechanism rotates the fan blades 207 therein to make the brushless blower exhaust air; a limiting shell mechanism; the limiting shell mechanism is arranged at the top of the base 1, and the limiting shell The mechanism limits the fan blades 207 through the first limit frame 204 therein; the connecting mechanism is arranged on the heat dissipation mechanism, and the connecting mechanism installs the air inlet and air outlet of the heat dissipation mechanism through the mounting member 503 therein; by setting the heat dissipation mechanism, the heat dissipation area of ​​the internal motor of the brushless blower can be increased, and while the heat is conducted out through the heat dissipation hollow tube 301, the cold air flow flows inside the heat dissipation hollow tube 301, thereby accelerating the heat dissipation efficiency of the heat dissipation hollow tube 301, and by setting the air inlet pipe 309 and the air outlet pipe 310, it is convenient to connect to external air pumps, heat exchangers and other equipment, so as to dissipate the heat of the heat dissipation hollow tube 301 more efficiently, increase the heat dissipation method, and further improve the internal heat dissipation efficiency of the brushless blower.

[0046] In some embodiments, see Figure 2 , Figure 5 , Figure 6 , Fig.10The heat dissipation mechanism includes a connecting ring 302, a partition 3021, a first connecting cavity 303, a second connecting cavity 304, a plurality of first connecting tubes 305, a plurality of second connecting tubes 306, a fixing rod 311, a first connecting frame 307, a second connecting frame 308, an air inlet pipe 309 and an air outlet pipe 310; the connecting ring 302 is fixedly installed at one end of the heat dissipation hollow tube 301, the partition 3021 is fixedly installed in the middle of the inner wall of the connecting ring 302, the first connecting cavity 303 is formed between the lower part of the partition 3021 and the bottom end of the inner wall of the connecting ring 302, the second connecting cavity 304 is formed between the upper part of the partition 3021 and the top end of the inner wall of the connecting ring 302, one end of the heat dissipation hollow tube 301 extends to the inside of the first connecting cavity 303, and the other end of the heat dissipation hollow tube 301 extends to the inside of the first connecting cavity 303. One end extends to the inside of the second connecting cavity 304; a plurality of first connecting tubes 305 and second connecting tubes 306 are fixedly installed on the top of the connecting ring 302, one end of the first connecting tube 305 extends to the inside of the first connecting cavity 303, one end of the second connecting tube 306 extends to the inside of the second connecting cavity 304, a fixing rod 311 is fixedly installed on the bottom end of the base 1, a first connecting frame 307 is fixedly installed on one end of the fixing rod 311, and a second connecting frame 308 is fixedly installed on one end of the first connecting frame 307. The first connecting tube 305 and the second connecting tube 306 extend to the outside of the bottom end of the base 1, one end of the first connecting tube 305 is fixedly installed on the outer wall of the first connecting frame 307, and the second connecting tube 306 is fixedly installed on the outer wall of the second connecting frame 308. The air inlet pipe 309 is fixedly installed on the outer wall of the first connecting frame 307, and the air outlet pipe 310 is fixedly installed on the outer wall of the second connecting frame 308. The first connecting pipe 305 and the second connecting pipe 306 are arranged alternately along the outer ring of the connecting ring 302, and are respectively connected to the first connecting cavity 303 and the second connecting cavity 304 where the connecting ring 302 is located. The first connecting pipe 305 is connected to one end of the heat dissipation hollow pipe 301 through the first connecting cavity 303, and the second connecting pipe 306 is connected to the other end of the heat dissipation hollow pipe 301 through the second connecting cavity 304. The heat dissipation hollow pipe 301 is two parallel U-shaped copper pipes connected at one end, and the two ends are extended outward; when dissipating heat inside the brushless blower When the airflow enters the fan housing 103, when it passes through the inner wall of the fan housing 103, it enters the air inlet pipe 309 through the air inlet frame 5, and the airflow passes through the first connecting frame 307, the first connecting pipe 305, and the first connecting cavity 303 in the connecting ring 302 in sequence. Then, the airflow enters the interior of the heat dissipation hollow tube 301 from one end of the heat dissipation hollow tube 301 connected to the first connecting cavity 303, and then flows out from the other end of the heat dissipation hollow tube 301 to the second connecting cavity 304, and then is discharged through the second connecting tube 306, the second connecting frame 308 and the air outlet pipe 310 in sequence. One end of the air outlet pipe 310 can be connected to the air outlet duct installed on the air outlet 212 to accelerate the heat dissipation efficiency of the heat dissipation hollow tube 301.

[0047] In some embodiments, see Figure 3 , Figure 4 The driving mechanism includes a winding mounting frame 4, a plurality of coils 401, a rotor 402, and a motor housing 403. The motor housing 403 is fixedly mounted on the top of the base 1. The winding mounting frame 4 is fixedly mounted on the inner wall of the motor housing 403. The plurality of coils 401 are wound on the winding mounting frame 4. The rotor 402 is rotatably mounted on the winding mounting frame 4 and the inner wall of the bearing. One end of the rotor 402 extends to the outside of the top of the motor housing 403. The fan blade 207 is fixedly mounted on one end of the rotor 402 extending to the outside of the top of the motor housing 403. A connecting piece is fixedly mounted on one end of the rotor 402 extending to the outside of the top of the motor housing 403. The fan blade 207 is fixedly mounted on one end of the connecting piece. The fan blade 207 and the connecting piece are connected to each other. A slot is provided at the connection, and threaded holes are provided on the slot wall and one side of the connector. The threaded holes on one side of the connector correspond to the threaded holes on the slot wall. The connector is engaged with the slot, and the fan blades 207 are fixed to one end of the rotor 402 by bolts; the motor housing 403 is located on the inner cavity wall where the heat dissipation housing 3 is located; the coils 401 on the winding mounting frame 4 are energized, and a magnetic field is generated between the coils 401, so that the rotor 402 rotates. The rotor 402 is made of neodymium iron boron magnets, and the rotor 402 drives the fan blades 207 to rotate. When the rotor 402 rotates, the electronic commutator is used to control the direction of the current in the coil 401, thereby controlling the direction of the magnetic field and realizing continuous rotation of the rotor 402.

[0048] In this example, by setting the motor housing 403 as a plastic housing with heat dissipation holes, compared with a metal housing, the weight of the brushless blower can be reduced, making the brushless blower lightweight.

[0049] In some embodiments, see Figure 6 , Figure 7A plurality of second balls 210 are movably mounted at the bottom end of the fan blade 207, a second limit frame 211 is fixedly mounted at the top end of the base 1, the second limit frame 211 is arranged in an annular shape, the bottom end of the fan blade 207 is engaged and fixed with the slot surrounded by the second limit frame 211, the second ball 210 is located between the bottom end of the fan blade 207 and the bottom end of the inner wall of the second limit frame 211, a limit ring 208 is fixedly mounted at the bottom end of the outer wall of the fan blade 207, and engaging grooves 209 are provided at both ends of the outer wall of the limit ring 208, the limit housing mechanism includes a fan housing 103, an annular protrusion 105, an inner gear ring 106, a rotating annular plate 2, a rotating groove 201, a rotating rod 202, a gear 203, a plurality of fixed columns 205, and a first ball 206, the fan housing 103 is arranged Installed on the top of the base 1, the annular protrusion 105 and the inner gear ring 106 are fixedly installed on the bottom end of the inner wall of the fan housing 103, the inner gear ring 106 is located at the top of the annular protrusion 105, the rotating groove 201 is opened on the outer wall of the rotating annular plate 2, the rotating groove 201 is engaged with the annular protrusion 105, the rotating annular plate 2 is rotatably installed on the inner wall of the annular protrusion 105 on the inner wall of the fan housing 103 through the rotating groove 201 on the outer wall, a plurality of rotating holes are opened on the top of the rotating annular plate 2, a rotating protrusion is fixedly installed on the outer wall of the rotating rod 202, the rotating rod 202 is rotatably installed on the inner wall of the rotating hole through the rotating protrusion, the gear 203 is fixedly installed on the top of the rotating rod 202, a plurality of gears 203 are meshed with the inner gear ring 106, and the first limit frame 204 is fixedly installed on the rotating At the bottom end of the movable rod 202, the first limit frame 204 is U-shaped, and a plurality of ball grooves are provided at both ends of the inner wall of the first limit frame 204. The first ball 206 is movably mounted on the wall of the ball groove, and a plurality of fixing columns 205 are fixedly mounted on the bottom end of the rotating annular plate 2; when installing the fan casing 103, the first limit frame 204 is rotated to the bottom of the rotating annular plate 2 so that the rotating annular plate 2 covers the first limit frame 204, and the first fixing plate 104 on the outer wall of the fan casing 103 is engaged in the corresponding arc groove 101, and the fixing column 205 at the bottom end of the rotating annular plate 2 is inserted into the fixing cylinder 102 to fix the rotating annular plate 2 so that the rotating annular plate 2 does not rotate. At this time, the fan casing 103 is rotated so that the first fixing plate on the outer wall of the fan casing 103 104 rotates synchronously in the arc groove 101 until the through holes on the first fixed plate 104 and the arc groove 101 are aligned. At this time, the rotation of the inner gear ring 106 drives the gear 203 to rotate, so that the first limit frame 204 rotates and extends, and the two ends of the limit ring 208 on the fan blade 207 are clamped. The limit ring 208 is supported by the first limit frame 204 and the first ball 206, so as to support the bottom end of the outer wall of the fan blade 207. The bottom end of the fan blade 207 is limited by the second limit frame 211, and the top of the fan blade 207 is fixed to one end of the rotor 402 by bolts, so that the installation of the fan blade 207 is more stable, the vibration of the surface of the fan blade 207 when the fan blade 207 rotates is reduced, the stability of the rotation of the fan blade 207 is improved, and the noise generated by the rotation of the fan blade 207 is further reduced.

[0050] In some embodiments, see Figure 7 , a plurality of fixed cylinders 102 are fixedly installed on the outer edge of the top of the base 1, and the position of the fixed cylinder 102 corresponds to the fixed column 205, and the fixed column 205 is engaged with the corresponding fixed cylinder 102. A plurality of arc grooves 101 are opened on the edge of the top of the base 1, and a plurality of first fixed plates 104 are fixedly installed on the bottom end of the outer wall of the fan housing 103. The first fixed plate 104 is slidably installed on the corresponding arc groove 101 groove wall, and the edge of the arc groove 101 groove wall and one side of the first fixed plate 104 are both provided with through holes. The first fixed plate 104 is fixedly installed on the top of the base 1 by bolts, and the bottom end of the base 1 is fixed A plurality of second fixed plates 107 are installed, and an air outlet 212 is fixedly installed on the outer wall of the fan housing 103. The opening of the first limit frame 204 corresponds to the position of the limit ring 208. The limit ring 208 is located between the two ends of the inner wall of the first limit frame 204, and the first ball 206 is located on the groove wall surface of the corresponding engaging groove 209. By setting the rotating annular plate 2, the fixed column 205 and the fixed cylinder 102, when the fan housing 103 is installed, the rotating annular plate 2 is fixed by the fixed cylinder 102, so that the first limit frame 204 can be rotated and extended, which is convenient for the installation of the limit housing mechanism.

[0051] For further information, please refer again to Fig. 9 The connecting mechanism includes an air inlet frame 5, a mounting tube 501, a plurality of first fixing ears 502 and a plurality of second fixing ears 504. The air inlet frame 5 is fixedly mounted on the outer wall of the fan housing 103. The air inlet frame 5 is connected to the inside of the fan housing 103. The mounting tube 501 is fixedly mounted on one side of the air inlet frame 5. The inner wall of the mounting tube 501 is provided with a thread. The mounting member 503 is fixedly mounted on one end of the air inlet pipe 309 and the air outlet pipe 310. One end of the outer wall of the mounting member 503 is provided with an external thread. The plurality of first fixing ears 50 2 is fixedly mounted on one end of the outer wall of the mounting tube 501, a plurality of second fixing ears 504 are fixedly mounted on one end of the outer wall of the mounting piece 503, and the first fixing ear 502 and the second fixing ear 504 are connected by bolts; in this example, an air pump in the prior art can be connected to one end of the air outlet pipe 310, one end of the air pump outlet is connected to the heat exchanger through a pipeline, and the air inlet pipe 309 is connected to one end of the heat exchanger outlet, so that the heat dissipation speed can be further increased, and the mounting piece 503 is provided to facilitate the connection of an external air delivery device.

[0052] The working process and principle of the present invention are as follows: when the brushless blower is used, the coil 401 is energized, a magnetic field is generated between the coils 401, and the rotor 402 is rotated. The material of the rotor 402 is a neodymium iron boron magnet. The rotor 402 drives the fan blades 207 to rotate. When the rotor 402 rotates, the direction of the current flowing in the coil 401 is controlled by an electronic commutator, thereby controlling the direction of the magnetic field to achieve continuous rotation of the rotor 402. When the brushless blower is cooled, when the airflow enters the fan housing 103, When passing through the inner side wall of the fan housing 103, the air enters the air inlet pipe 309 through the air inlet frame 5, and the airflow passes through the first connecting frame 307, the first connecting pipe 305, and the first connecting cavity 303 in the connecting ring 302 in sequence. Then, the airflow enters the interior of the heat dissipation hollow tube 301 from one end of the heat dissipation hollow tube 301 connected to the first connecting cavity 303, and then flows out from the other end of the heat dissipation hollow tube 301 to the second connecting cavity 304, and then is discharged through the second connecting pipe 306, the second connecting frame 308 and the air outlet pipe 310 in sequence.

[0053] 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 brushless blower with low noise and heat dissipation, characterized in that: include: A base (1), wherein the base (1) is fixed to the ground by bolts; A heat dissipation mechanism, the heat dissipation mechanism being arranged on the base (1), comprising a heat dissipation shell (3) and a heat dissipation hollow tube (301); the heat dissipation shell (3) is fixedly mounted on the top of the base (1) by means of bolts and forms a wrap around the driving mechanism in the middle; the heat dissipation hollow tube (301) extends to the outer wall of the heat dissipation shell (3) through a through hole in the outer wall of the heat dissipation shell (3); heat is dissipated inside the brushless blower by means of a plurality of heat dissipation hollow tubes (301); The heat dissipation mechanism comprises a communication ring (302), a partition (3021), a first communication cavity (303), a second communication cavity (304), a plurality of first connection pipes (305), a plurality of second connection pipes (306), a fixing rod (311), a first communication frame (307), a second communication frame (308), an air inlet pipe (309) and an air outlet pipe (310); The connecting ring (302) is fixedly mounted on one end of the heat dissipation hollow tube (301); the partition (3021) is fixedly mounted in the middle of the inner wall of the connecting ring (302); the first connecting cavity (303) is formed between the lower part of the partition (3021) and the bottom end of the inner wall of the connecting ring (302); the second connecting cavity (304) is formed between the upper part of the partition (3021) and the top end of the inner wall of the connecting ring (302); one end of the heat dissipation hollow tube (301) extends into the interior of the first connecting cavity (303); and the other end extends into the interior of the second connecting cavity (304); A plurality of first connecting tubes (305) and second connecting tubes (306) are fixedly mounted on the top of the connecting ring (302); one end of the first connecting tube (305) extends into the first connecting cavity (303); one end of the second connecting tube (306) extends into the second connecting cavity (304); the fixing rod (311) is fixedly mounted on the bottom of the base (1); the first connecting frame (307) is fixedly mounted on one end of the fixing rod (311); and the second connecting frame (308) is fixedly mounted on the bottom of the base (1). At one end of the first connecting frame (307), the first connecting pipe (305) and the second connecting pipe (306) extend to the outside of the bottom end of the base (1); one end of the first connecting pipe (305) is fixedly mounted on the outer wall of the first connecting frame (307); the second connecting pipe (306) is fixedly mounted on the outer wall of the second connecting frame (308); the air inlet pipe (309) is fixedly mounted on the outer wall of the first connecting frame (307); and the air outlet pipe (310) is fixedly mounted on the outer wall of the second connecting frame (308); A driving mechanism, the driving mechanism being arranged at the top of the base (1), the driving mechanism causing the brushless blower to draw air by rotating the fan blades (207) therein; The driving mechanism comprises a winding mounting frame (4), a plurality of coils (401), a rotor (402) and a motor housing (403); the motor housing (403) is fixedly mounted on the top of the base (1); the winding mounting frame (4) is fixedly mounted on the inner wall of the motor housing (403); the plurality of coils (401) are wound on the winding mounting frame (4); the rotor (402) is rotatably mounted on the winding mounting frame (4) and the inner wall of the bearing; one end of the rotor (402) extends to the outside of the top of the motor housing (403); and the fan blade (207) is fixedly mounted on one end of the rotor (402) extending to the outside of the top of the motor housing (403); The motor housing (403) is located on the inner cavity wall where the heat dissipation housing (3) is located; A plurality of second balls (210) are movably mounted on the bottom end of the fan blade (207); a second limit frame (211) is fixedly mounted on the top end of the base (1); the second limit frame (211) is arranged in an annular shape; the bottom end of the fan blade (207) is fixedly engaged with a slot formed by the second limit frame (211); the second balls (210) are located between the bottom end of the fan blade (207) and the bottom end of the inner wall of the second limit frame (211); a limit ring (208) is fixedly mounted on the bottom end of the outer wall of the fan blade (207); and engaging grooves (209) are provided at both ends of the outer wall of the limit ring (208); A limiting shell mechanism; the limiting shell mechanism is arranged at the top of the base (1), and the limiting shell mechanism limits the fan blade (207) via a first limiting frame (204) therein; The limiting housing mechanism comprises a fan housing (103), an annular protrusion (105), an inner gear ring (106), a rotating annular plate (2), a rotating groove (201), a rotating rod (202), a gear (203), a plurality of fixed columns (205) and a first ball (206); the fan housing (103) is mounted on the top of the base (1); the annular protrusion (105) and the inner gear ring (106) are fixedly mounted on the bottom end of the inner wall of the fan housing (103); the inner gear ring (106) is located at the top of the annular protrusion (105); the rotating groove (201) is formed on the outer wall of the rotating annular plate (2); and the rotating groove (201) is engaged with the annular protrusion (105); The rotating annular plate (2) rotates through the rotating groove (201) on the outer wall and is installed on the inner side of the annular protrusion (105) on the inner wall of the fan housing (103); a plurality of rotating holes are opened at the top of the rotating annular plate (2); a rotating protrusion is fixedly installed on the outer wall of the rotating rod (202); the rotating rod (202) is rotatably installed on the inner wall of the rotating hole through the rotating protrusion; the gear (203) is fixedly installed on the top of the rotating rod (202); a plurality of the gears (203) are meshed with the inner gear ring (106); the first limit frame (204) is fixedly installed on the bottom end of the rotating rod (202); the first limit frame (204) is U-shaped; a plurality of ball grooves are opened at both ends of the inner wall of the first limit frame (204); the first ball (206) is movably installed on the wall of the ball groove; and a plurality of the fixing columns (205) are fixedly installed on the bottom end of the rotating annular plate (2); A plurality of fixing cylinders (102) are fixedly mounted on the outer edge of the top of the base (1), the position of the fixing cylinders (102) corresponds to the fixing columns (205), the fixing columns (205) are engaged with the corresponding fixing cylinders (102), a plurality of arc-shaped grooves (101) are provided on the edge of the top of the base (1), a plurality of first fixing plates (104) are fixedly mounted on the bottom end of the outer wall of the fan housing (103), the first fixing plates (104) are slidably mounted on the groove walls corresponding to the arc-shaped grooves (101), the groove walls of the arc-shaped grooves (101) and one side of the first fixing plates (104) are both provided with through holes, the first fixing plates (104) are fixedly mounted on the top of the base (1) by bolts, a plurality of second fixing plates (107) are fixedly mounted on the bottom end of the base (1), and an air outlet (212) is fixedly mounted on the outer wall of the fan housing (103); The opening of the first limit frame (204) corresponds to the position of the limit ring (208), the limit ring (208) is located between the two ends of the inner wall of the first limit frame (204), and the first ball (206) is located on the groove wall surface corresponding to the engaging groove (209); A connecting mechanism, the connecting mechanism being arranged on the limiting housing mechanism, the connecting mechanism being used to mount an air inlet pipe (309) of the heat dissipation mechanism via a mounting member (503) therein; The connecting mechanism comprises an air inlet frame (5), a mounting tube (501), a plurality of first fixing ears (502) and a plurality of second fixing ears (504); the air inlet frame (5) is fixedly mounted on the outer wall of the fan housing (103); the air inlet frame (5) is connected to the interior of the fan housing (103); and the mounting tube (501) is fixedly mounted on one side of the air inlet frame (5); The inner wall of the mounting tube (501) is provided with a thread, the mounting member (503) is fixedly mounted on one end of the air inlet pipe (309) and the air outlet pipe (310), one end of the outer wall of the mounting member (503) is provided with an external thread, a plurality of the first fixing ears (502) are fixedly mounted on one end of the outer wall of the mounting tube (501), a plurality of the second fixing ears (504) are fixedly mounted on one end of the outer wall of the mounting member (503), and the first fixing ears (502) and the second fixing ears (504) are connected by bolts.

2. A heat dissipation and low noise brushless blower according to claim 1, characterized in that: The first connecting tube (305) and the second connecting tube (306) are arranged in a staggered manner along the outer portion of the circular ring of the connecting ring (302), and are respectively connected to the first connecting cavity (303) and the second connecting cavity (304) where the connecting ring (302) is located; the first connecting tube (305) is connected to one end of the heat dissipation hollow tube (301) extending through the first connecting cavity (303); the second connecting tube (306) is connected to the other end of the heat dissipation hollow tube (301) extending through the second connecting cavity (304); the heat dissipation hollow tube (301) is two parallel U-shaped copper tubes connected at one end, and both ends extend outward.

3. The heat dissipation and low noise brushless blower according to claim 1, characterized in that: A connecting piece is fixedly mounted on one end of the rotor (402) extending to the outside of the top end of the motor housing (403); the fan blade (207) is fixedly mounted on one end of the connecting piece; a slot is provided at the connection between the fan blade (207) and the connecting piece, and threaded holes are provided on the slot wall and one side of the connecting piece; the threaded holes on one side of the connecting piece correspond to the positions of the threaded holes on the slot wall; the connecting piece is engaged with the slot, and the fan blade (207) is fixedly mounted on one end of the rotor (402) by means of bolts.

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