CN210769444U - Direct current draught fan - Google Patents
Direct current draught fan Download PDFInfo
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- CN210769444U CN210769444U CN201921864628.0U CN201921864628U CN210769444U CN 210769444 U CN210769444 U CN 210769444U CN 201921864628 U CN201921864628 U CN 201921864628U CN 210769444 U CN210769444 U CN 210769444U
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Abstract
The utility model discloses a direct current draught fan, including the spiral case, the wind wheel, including a motor, an end cap, a controller, and a cover plate, fan housing and radiator fan, the fan housing is installed to the roof of spiral case, the front end housing supporting is installed on the fan housing, radiator fan is located the fan housing the inside and installs in the pivot, set up a plurality of exhaust vents on the side of fan housing, machine controller installs on the rear end cap, the front end housing is equipped with a plurality of first ventilation holes, be equipped with a plurality of second ventilation holes on the rear end cap, it forms and is equipped with first fresh air inlet to leave the clearance between machine controller and the rear end cap, when the motor rotates, cold air then passes through the second ventilation hole in getting into machine controller from first fresh air inlet under radiator fan's the traction, motor body's inside clearance and first. Therefore, the heat of the motor body and the motor controller can be dissipated simultaneously, the heat dissipation effect is good, and the working reliability of the motor is improved.
Description
The technical field is as follows:
the utility model relates to a direct current draught fan.
Background art:
the existing direct current draught fan comprises a volute, a wind wheel and a motor, wherein a cavity is formed in the volute, an air inlet is formed in the middle of the bottom wall of the volute, an air outlet is formed in the side wall of the volute, a through hole is formed in the middle of the top wall of the volute, the air inlet, the air outlet and the through hole are communicated with the cavity, the motor is arranged on the volute, the end part of a rotating shaft of the motor penetrates through the through hole to enter the cavity, the end part of the rotating shaft is, the motor comprises a motor body, a cooling fan and a motor controller, wherein the motor body comprises a rotating shaft, a motor shell, a stator assembly and a rotor assembly which are arranged in the motor shell, a front end cover and a rear end cover which are arranged at two ends of the motor shell, the cooling fan is arranged on the front end cover and is driven by the rotating shaft to rotate, the motor controller is arranged on the rear end cover, the motor shell is provided with a plurality of ventilation holes, and the ventilation holes are positioned between the stator assembly and the front end cover. Although the direct current draught fan with the structure has the cooling fan for cooling the motor body, the cooling effect of the motor body is not ideal enough because the ventilation hole is positioned between the stator assembly and the front end cover, and the motor controller needs to add some aluminum alloy cooling parts for auxiliary cooling, so that the structural complexity and the production cost of the product are increased.
The invention content is as follows:
the utility model aims at providing a direct current draught fan for solve among the prior art problem that the radiating motor radiating effect of direct current draught fan is not good.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a direct current draught fan, including spiral case, wind wheel, motor, fan housing and radiator fan, the motor includes motor body and machine controller, motor body includes the pivot, motor housing, install stator module in motor housing, the rotor subassembly, install front end housing and the rear end cap at motor housing both ends, spiral case the inside vacuole formation, the fan housing is installed to the roof of spiral case, the front end housing supporting is installed on the fan housing, the shaft end portion of motor gets into in the cavity and is connected with the wind wheel that is located the cavity the inside, radiator fan is located the fan housing the inside and installs in the pivot, set up a plurality of exhaust vents on the side of fan housing, machine controller installs on the rear end cap, a serial communication port: the front end cover is provided with a plurality of first ventilation holes, the rear end cover is provided with a plurality of second ventilation holes, a gap is reserved between the motor controller and the rear end cover to form a first air inlet hole, and when the motor rotates, cold air enters the motor controller from the first air inlet hole under the traction of the cooling fan, passes through the second ventilation holes, the inner gap of the motor body and the first ventilation holes, and is finally discharged from the air outlet hole.
The motor controller comprises a box body and a control panel, the box body comprises a top plate and a sleeve, the control panel is installed below the top plate, the end edge of the sleeve extends out of the installation boss towards the rear end cover, the installation boss is connected with the rear end cover, and a first air inlet hole is formed in a gap between the end edge of the sleeve and the rear end cover.
The inner diameter D1 of the sleeve is larger than the outer diameter D2 of the motor shell, and the box body is connected with the rear end cover through a screw.
The mounting boss is provided with a screw hole, and the sleeve above the mounting boss is provided with an avoidance groove.
The motor shell is also provided with a plurality of second air inlet holes, and the second air inlet holes are positioned between the stator core and the rear end cover of the stator assembly.
The front end cover and the fan cover are riveted through rivets.
The rear end cover and the motor shell are riveted together through a buckle clamp.
Compared with the prior art, the utility model, following effect has:
1) the utility model comprises a volute, a wind wheel, a motor, a fan cover and a heat radiation fan, wherein the fan cover is arranged on the top wall of the volute, a front end cover is supported and arranged on the fan cover, the heat radiation fan is positioned inside the fan cover and arranged on a rotating shaft, a plurality of air outlet holes are arranged on the side surface of the fan cover, a motor controller is arranged on a rear end cover, a plurality of first air vent holes are arranged on the front end cover, a plurality of second air vent holes are arranged on the rear end cover, a gap is left between the motor controller and the rear end cover to form a first air inlet hole, when the motor rotates, cold air enters the motor controller from the first air inlet hole under the traction of the heat radiation fan and then passes through the second air vent holes, the inner gap of the motor body and the first air vent holes, and finally is discharged from the air outlet holes, the air flow can radiate the heat of the motor controller, the motor controller box body does not need to be specially provided with a heat dissipation structure, so that the box body structure is simplified, and the product cost is reduced;
1) other advantages of the present invention will be described in detail in the examples section.
Description of the drawings:
fig. 1 is a schematic structural diagram of a direct-current induced draft fan provided in an embodiment of the present invention;
FIG. 2 is a top view of a DC induced draft fan;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a sectional view taken along line B-B of FIG. 2;
FIG. 5 is an exploded view of a DC induced draft fan;
FIG. 6 is an exploded view of the motor in the DC induced draft fan;
fig. 7 is an exploded view of a motor controller in a dc induced draft fan.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
As shown in fig. 1 to 7, the embodiment provides a direct current induced draft fan, which includes a volute 1, a wind wheel 15, a motor 20, a wind cover 31 and a heat dissipation fan 32, where the motor 20 includes a motor body 2 and a motor controller 4, the motor body 2 includes a rotating shaft 21, a motor casing 22, a stator assembly 23 installed in the motor casing 22, a rotor assembly 24, a front end cover 25 and a rear end cover 26 installed at two ends of the motor casing 22, the volute 1 includes a top wall 16 and a bottom wall 12, a cavity 11 is formed inside the volute 1, the wind cover 31 is installed on the top wall 16 of the volute 1, the front end cover 25 is supported and installed on the wind cover 31, an end portion of the rotating shaft 21 of the motor 20 enters the cavity 11 and is connected with the wind wheel 15 located inside the cavity 11, the heat dissipation fan 32 is located inside the wind cover 31 and installed on the rotating shaft 21, a plurality of air outlet holes 310 are, the method is characterized in that: the front end cover 25 is provided with a plurality of first ventilation holes 251, the rear end cover 26 is provided with a plurality of second ventilation holes 261, a gap is reserved between the motor controller 4 and the rear end cover 26 to form a first air inlet hole 41, when the motor rotates, cold air enters the motor controller 4 from the first air inlet hole 41 under the traction of the cooling fan 32, then passes through the second ventilation holes 261, the inner gap 232 of the motor body 2 and the first ventilation holes 251, and finally is discharged from the air outlet 310. The motor controller and the motor are cooled simultaneously by the airflow cooling, so that the temperature rise of the motor body and the motor controller is reduced, the working reliability of the motor is improved, the box body of the motor controller is not required to be specially provided with a cooling structure, the structure of the box body is simplified, and the product cost is reduced.
The stator assembly 23 includes a plurality of stator windings 231 and a stator core 230, and the internal gap 232 of the motor body 2 includes a gap between two adjacent stator windings and a gap between the stator assembly 23 and the rotor assembly 24.
The motor controller 4 comprises a box body 42 and a control board 43, the box body 42 comprises a top plate 421 and a sleeve 423, the control board 43 is installed under the top plate 421, the end edge of the sleeve 423 extends out of the installation boss 422 towards the rear end cover 26, the installation boss 422 is connected with the rear end cover 26, and a first air inlet hole 41 is formed in a gap between the end edge of the sleeve 423 and the rear end cover 26. The box body 42 is not required to be additionally provided with aluminum alloy heat dissipation parts, so that the structure is simplified, and the production cost is reduced.
The inner diameter D1 of the sleeve 423 is larger than the outer diameter D2 of the motor housing 22, and the box body 42 is connected with the rear end cover 26 through the screw 28. The inner diameter D1 of the sleeve 423 is larger than the outer diameter D2 of the motor housing 22, and when the cool air flows into the first air inlet hole 41, a part of the air flow flows to the top plate 421 and the control plate 43, so as to rapidly dissipate the heat of the control plate 43.
The mounting boss 422 is provided with a screw hole, and the sleeve 423 above the mounting boss 422 is provided with a clearance groove 4231 for facilitating the screw installation.
The motor housing 22 is further provided with a plurality of second air inlet holes 221, and the second air inlet holes 221 are located between the stator core of the stator assembly 23 and the rear end cover 26. When the motor rotates, the cold air drawn by the cooling fan 32 enters the motor controller 4 from the second air inlet 221, passes through the second vent hole 261, the internal gap 232 of the motor body 2 and the first vent hole 251, and is finally discharged from the air outlet 310 to form a second heat dissipation airflow channel, which is more favorable for accelerating the heat dissipation of the motor body 20 and improving the heat dissipation effect.
The front end cover 25 and the fan housing 31 are riveted together by a rivet, and the rear end cover 26 and the motor housing 22 are riveted together by a buckle clip 27, so that the installation is convenient.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (7)
1. A direct current draught fan comprises a volute (1), a wind wheel (15), a motor (20), a fan cover (31) and a cooling fan (32), wherein the motor (20) comprises a motor body (2) and a motor controller (4), the motor body (2) comprises a rotating shaft (21), a motor shell (22), a stator assembly (23) installed in the motor shell (22), a rotor assembly (24), a front end cover (25) and a rear end cover (26) which are installed at two ends of the motor shell (22), a cavity (11) is formed inside the volute (1), the fan cover (31) is installed on a top wall (16) of the volute (1), the front end cover (25) is supported and installed on the fan cover (31), the end part of a rotating shaft (21) of the motor (20) enters the cavity (11) and is connected with the wind wheel (15) located inside the cavity (11), the cooling fan (32) is located inside the fan cover (31) and installed on the rotating shaft (21), set up a plurality of exhaust vents (310) on the side of fan housing (31), motor controller (4) install on rear end cap (26), its characterized in that: the front end cover (25) is equipped with a plurality of first ventilation holes (251), be equipped with a plurality of second ventilation hole (261) on rear end cover (26), leave the clearance between motor controller (4) and rear end cover (26) and form and be equipped with first fresh air inlet (41), when the motor rotates, cold air gets into in motor controller (4) then through second ventilation hole (261) from first ventilation hole (232) and first ventilation hole (251) of motor body (2) from first fresh air inlet (41) under radiator fan (32)'s the traction, discharge from exhaust vent (310) at last.
2. The direct-current induced draft fan according to claim 1, wherein: motor controller (4) include box body (42) and control panel (43), and box body (42) include roof (421) and sleeve (423), and control panel (43) are installed under roof (421), and the tip edge of sleeve (423) stretches out installation boss (422) to rear end cap (26) direction, and installation boss (422) are connected with rear end cap (26), and the clearance forms between the tip edge of sleeve (423) and rear end cap (26) and is equipped with first fresh air inlet (41).
3. The direct-current induced draft fan according to claim 2, wherein: the inner diameter D1 of the sleeve (423) is larger than the outer diameter D2 of the motor shell (22), and the box body (42) is connected with the rear end cover (26) through a screw (28).
4. The direct-current induced draft fan according to claim 2, wherein: the mounting boss (422) is provided with a screw hole, and the sleeve (423) above the mounting boss (422) is provided with a clearance groove (4231).
5. The direct current induced draft fan according to claim 1, 2, 3 or 4, wherein: the motor shell (22) is also provided with a plurality of second air inlet holes (221), and the second air inlet holes (221) are located between the stator core of the stator assembly (23) and the rear end cover (26).
6. The direct-current induced draft fan according to claim 5, wherein: the front end cover (25) is riveted with the fan cover (31) through a rivet.
7. The direct-current induced draft fan according to claim 6, wherein: the rear end cover (26) and the motor shell (22) are buckled and riveted together through a buckling clamp (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921864628.0U CN210769444U (en) | 2019-11-01 | 2019-11-01 | Direct current draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921864628.0U CN210769444U (en) | 2019-11-01 | 2019-11-01 | Direct current draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769444U true CN210769444U (en) | 2020-06-16 |
Family
ID=71038192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921864628.0U Active CN210769444U (en) | 2019-11-01 | 2019-11-01 | Direct current draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769444U (en) |
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2019
- 2019-11-01 CN CN201921864628.0U patent/CN210769444U/en active Active
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