CN214101060U - an induced draft fan - Google Patents
an induced draft fan Download PDFInfo
- Publication number
- CN214101060U CN214101060U CN202023031988.8U CN202023031988U CN214101060U CN 214101060 U CN214101060 U CN 214101060U CN 202023031988 U CN202023031988 U CN 202023031988U CN 214101060 U CN214101060 U CN 214101060U
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- Prior art keywords
- heat dissipation
- rear end
- fan
- end cover
- induced draft
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000009423 ventilation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 241000886569 Cyprogenia stegaria Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
本实用新型公开了一种引风机，包括蜗壳、风轮、电机和散热风扇，电机包括转轴、转子组件、定子组件和前端盖和后端盖，散热风扇安装在后端盖上，前端盖和后端盖上设有前端散热孔和后端散热孔，转轴包括前轴伸端和后轴伸端，后转轴端上安装有磁环，后端盖与散热风扇之间安装有盖帽，盖帽内设有容置腔，容置腔内安装有带电子元件的控制线路板，磁环位于容置腔内，带电子元件的控制线路板与磁环之间配合感应，盖帽遮挡住后端盖一部分，未遮挡部分的后端盖的后端散热孔与散热风扇之间形成空气流道，该结构布置合理，在盖帽保护控制线路板的基础上，散热风扇还可以为电机进行散热，散热效果好，提高电机的工作可靠性。
The utility model discloses an induced draft fan, comprising a volute, a wind wheel, a motor and a cooling fan. The motor includes a rotating shaft, a rotor assembly, a stator assembly, a front end cover and a rear end cover. The cooling fan is mounted on the rear end cover, and the front end cover The front end and the rear end cover are provided with front heat dissipation holes and rear end heat dissipation holes. The rotating shaft includes a front shaft extension end and a rear shaft extension end. A magnetic ring is installed on the rear shaft end, and a cap is installed between the rear end cover and the cooling fan. There is an accommodating cavity inside, a control circuit board with electronic components is installed in the accommodating cavity, the magnetic ring is located in the accommodating cavity, the control circuit board with electronic components and the magnetic ring cooperate with induction, and the cap covers the rear end cover One part, the air flow channel is formed between the rear heat dissipation hole of the rear end cover of the unshielded part and the heat dissipation fan. The structure is arranged reasonably. On the basis of the cap protecting the control circuit board, the heat dissipation fan can also dissipate heat for the motor, and the heat dissipation effect is Well, improve the working reliability of the motor.
Description
The technical field is as follows:
the utility model relates to a draught fan.
Background art:
the existing induced draft fan comprises a fan shell, a wind wheel and an alternating current motor, wherein the fan shell is provided with an air inlet, an air outlet and an internal cavity for accommodating the wind wheel, the air inlet and the air outlet are communicated with the internal cavity, the alternating current motor is arranged on the fan shell, the front end part of a rotating shaft on the alternating current motor extends into the internal cavity and is connected with the wind wheel, the top of the alternating current motor is provided with a fan controller, the fan controller comprises an AC-DC conversion circuit, a microprocessor, a Hall sensor, a driving circuit and a relay, the input end of the AC-DC conversion circuit is connected with an external alternating current input, the output end of the AC-DC conversion circuit provides direct current for each circuit, the input end of the relay is connected with an external alternating current input, the output end of the relay supplies power to the outside, the rotating shaft on the alternating current motor is provided with a magnetic ring, the Hall sensor is arranged near the magnetic ring to detect a rotating speed signal on the alternating current motor and then inputs the rotating speed signal to the microprocessor, the microprocessor controls the power on or off of the relay through the driving circuit, the AC-DC conversion circuit, the microprocessor, the Hall sensor, the driving circuit and the relay are integrally installed on the circuit board, a protective outer cover is installed outside the circuit board, a bolt penetrates through a mounting hole in the protective outer cover and is locked by an upper nut, the protective outer cover is pressed on the circuit board, a cooling fan is installed at the top of the protective outer cover, one end shaft extension end of the rotating shaft is connected with the cooling fan, the protective outer cover is located between the AC motor and the cooling fan and completely covers the top of the AC motor, and therefore the cooling fan cannot blow the motor to dissipate heat, the heat dissipation of the motor is affected, and the temperature of the motor rises.
The invention content is as follows:
the utility model aims at providing a draught fan can solve among the prior art because the protection dustcoat covers AC motor top position completely, leads to radiator fan to blow the heat dissipation to the motor to influence the motor heat dissipation, lead to the problem that motor temperature risees.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims at providing a draught fan, including the spiral case, the wind wheel, motor and radiator fan, the cavity has been seted up in the middle of the spiral case, and be provided with air intake and air outlet with the cavity intercommunication on the spiral case, the wind wheel is installed in the cavity of spiral case, the motor is installed on the spiral case, the motor includes the pivot, the rotor subassembly, stator module and front end housing and rear end cap, radiator fan installs on the rear end cap, be equipped with front end louvre and rear end louvre on front end cap and the rear end cap respectively, the pivot includes that the front axle stretches end and rear axle stretch end, the front axle stretches the end and stretches into the cavity the inside and be connected with the wind wheel, the rear axle stretches the end and is connected with radiator fan, install the magnetic ring on the rear axle end, its characterized in that: a cap is arranged between the rear end cover and the cooling fan, a containing cavity is arranged in the cap, a control circuit board with an electronic element is arranged in the containing cavity, a magnetic ring is positioned in the containing cavity, the control circuit board with the electronic element is in matched induction with the magnetic ring, the cap shields a part of the rear end cover, and an air flow passage is formed between a rear heat dissipation hole of the rear end cover which is not shielded and the cooling fan.
The cap is semicircular.
The nut cap comprises an end plate, a side plate and an arc plate, wherein the side plate and the arc plate axially extend from the edge of the end plate, a containing cavity is enclosed among the end plate, the side plate and the arc plate, a shaft extending hole is formed in the end plate, and the extending containing cavity of the rear shaft extending end extends out of the shaft extending hole and is connected with the cooling fan.
The inner side wall of the arc plate is provided with a plurality of mounting seats, the mounting seats are provided with first mounting holes, the rear end cover is provided with second mounting holes corresponding to the first mounting holes, and the cover cap is locked on the rear end cover through the first mounting holes and the second mounting holes which are penetrated by bolts by utilizing a bolt-nut mechanism.
The inner side wall of the arc plate is provided with the mounting columns, the mounting columns are provided with the third mounting holes, the control circuit board is provided with the fourth mounting holes corresponding to the third mounting holes, the fourth mounting holes and the third mounting holes are screwed in through screws, and the control circuit board is locked in the containing cavity of the cap.
The bottom of the arc plate is provided with a wire outlet hole, the inner side wall of the arc plate is provided with a boss, and the boss corresponds to the wire outlet hole.
The outer side wall of the arc plate is provided with a groove, and the positions of the groove and the boss correspond.
The middle of the side plate is provided with a cambered surface, and the cambered surface corresponds to the position of the magnetic ring.
The motor support is arranged between the front end cover and the volute, a containing cavity is formed by enclosing the motor support, the front end cover and the top wall of the volute, the containing cavity is internally provided with the fan blades, the fan blades are connected with the front shaft extending end, and the outer side face of the motor support is provided with a plurality of ventilation holes.
The front end cover and the rear end cover are also provided with front side heat dissipation holes and rear side heat dissipation holes, and the front side heat dissipation holes, the rear end heat dissipation holes, the front side heat dissipation holes, the rear side heat dissipation holes and the ventilation holes are communicated.
Compared with the prior art, the utility model, following effect has:
1) the utility model discloses a spiral case, the wind wheel, motor and radiator fan, the cavity has been seted up in the middle of the spiral case, and be provided with air intake and air outlet with the cavity intercommunication on the spiral case, the wind wheel is installed in the cavity of spiral case, the motor is installed on the spiral case, the motor includes the pivot, the rotor subassembly, stator module and front end housing and rear end cap, radiator fan installs on the rear end cap, be equipped with front end louvre and rear end louvre on front end cap and the rear end cap respectively, the pivot includes that the front axle stretches end and rear axle stretch end, the front axle stretches the end and stretches into the cavity the inside and be connected with the wind wheel, the rear axle stretches the end and is connected with radiator fan, install the magnetic ring on the rear shaft end, its characterized in that: the structure is reasonable in arrangement, on the basis that the control circuit board is protected by the cap, the heat dissipation fan can also dissipate heat for the motor, the heat dissipation effect is good, and the working reliability of the motor is improved;
2) other advantages of the present invention will be described in detail in the examples section.
Description of the drawings:
fig. 1 is a perspective view provided in a first embodiment of the present invention;
fig. 2 is another perspective view of the first embodiment of the present invention;
fig. 3 is a partially exploded view according to an embodiment of the present invention;
fig. 4 is another partially exploded perspective view of the first embodiment of the present invention;
fig. 5 is an exploded view of a first embodiment of the present invention;
fig. 6 is a front view provided by the first embodiment of the present invention;
FIG. 7 is a cross-sectional view A-A of FIG. 6;
fig. 8 is a schematic view illustrating the flow direction of the air flow provided by the first embodiment of the present invention;
fig. 9 is a schematic partial structure diagram according to a first embodiment of the present invention;
fig. 10 is a schematic view of a cap structure according to a first embodiment of the present invention;
fig. 11 is a schematic view of another angle cap structure provided in the first embodiment of the present invention.
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.
The first embodiment is as follows:
as shown in fig. 1 to 11, the embodiment provides an induced draft fan, including spiral case 1, wind wheel 2, motor 3 and radiator fan 4, cavity 10 has been seted up in the middle of spiral case 1, and be provided with air intake 11 and air outlet 12 with cavity 10 intercommunication on the spiral case 1, wind wheel 2 is installed in the cavity 10 of spiral case 1, motor 3 installs on spiral case 1, motor 3 includes pivot 31, rotor subassembly 32, stator module 33 and front end housing 34 and rear end housing 35, radiator fan 4 installs on rear end housing 35, be equipped with front end louvre 341 and rear end louvre 351 on front end housing 34 and the rear end housing 35 respectively, pivot 31 includes that the front shaft stretches into end 311 and rear shaft stretch end 312, the front shaft stretches into the cavity 10 the inside and is connected with wind wheel 2, rear shaft stretches into end 312 and is connected with radiator fan 4, install 5 on the rear shaft end, its characterized in that: a cap 6 is installed between the rear end cover 35 and the heat dissipation fan 4, an accommodating cavity 60 is arranged in the cap 6, a control circuit board 7 with an electronic component is installed in the accommodating cavity 60, the magnetic ring 5 is located in the accommodating cavity 60, the control circuit board 7 with the electronic component and the magnetic ring 5 are in matched induction, the cap 6 shields a part of the rear end cover 35, and an air flow channel is formed between the rear end heat dissipation hole 351 of the rear end cover 35 without shielding the part and the heat dissipation fan 4.
The cover cap 6 is semicircular, is reasonable in structural arrangement, and can ensure the heat dissipation effect of the motor on the basis of protecting and controlling the circuit board.
The cap 6 comprises an end plate 61, a side plate 62 and an arc plate 63 extending axially from the edge of the end plate 61, a containing cavity 60 is enclosed among the end plate 61, the side plate 62 and the arc plate 63, a shaft extending hole 611 is formed in the end plate 61, and the extending containing cavity 60 of the rear shaft extending end 312 extends out from the shaft extending hole 611 to be connected with the cooling fan 4.
The mounting seats 632 are arranged on the inner side wall 631 of the arc plate 63, first mounting holes 633 are arranged on the mounting seats 632, second mounting holes 352 corresponding to the first mounting holes 633 are arranged on the rear end cover 35, the cover cap 6 is locked on the rear end cover 35 through the first mounting holes 633 and the second mounting holes 352 through bolts, and the mounting structure is simple.
Be equipped with a plurality of erection columns 634 on arc board 63's the inside wall 631, be equipped with third mounting hole 635 on the erection column 634, be equipped with the fourth mounting hole 71 that corresponds with third mounting hole 635 on the control scheme board 7, through screw precession fourth mounting hole 71 and third mounting hole 635, with control scheme board 7 locking in the holding chamber 60 of block 6, mounting structure is simple.
The bottom of the arc plate 63 is provided with a wire outlet hole 636, the inner side wall 631 of the arc plate 63 is provided with a boss 637, the boss 637 corresponds to the wire outlet hole 636, and a lead wire led out from the wire outlet hole can be radially compressed by the boss 637.
Be equipped with recess 639 on the lateral wall 638 of circular arc board 63, the position of recess 639 and boss 637 is corresponding, and structural arrangement is reasonable, makes the wall thickness of circular arc board 63 even, prevents to appear the shrinkage cavity when making bad.
The middle of the side plate 62 is provided with a cambered surface 621, the cambered surface 621 corresponds to the position of the magnetic ring 5, the structural arrangement is reasonable, and when the cap 6 is mounted on the rear end cover 35, the cambered surface 621 is used for avoiding the magnetic ring 5 to prevent interference.
Be equipped with motor support 8 between front end housing 34 and the spiral case 1, enclose between the roof of motor support 8, front end housing 34 and spiral case 1 and become and hold chamber 100, hold and place fan blade 9 in the chamber 100, fan blade 9 is connected with front shaft extension 311, is equipped with a plurality of ventilation holes 81 on the lateral surface of motor support 8, and when fan blade 9 ran, discharge the inside steam of motor from ventilation hole 81.
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 (10)
1. An induced draft fan comprises a volute (1), a wind wheel (2), a motor (3) and a heat dissipation fan (4), wherein a cavity (10) is formed in the middle of the volute (1), an air inlet (11) and an air outlet (12) which are communicated with the cavity (10) are formed in the volute (1), the wind wheel (2) is installed in the cavity (10) of the volute (1), the motor (3) is installed on the volute (1), the motor (3) comprises a rotating shaft (31), a rotor assembly (32), a stator assembly (33), a front end cover (34) and a rear end cover (35), the heat dissipation fan (4) is installed on the rear end cover (35), the front end cover (34) and the rear end cover (35) are respectively provided with a front end heat dissipation hole (341) and a rear end heat dissipation hole (351), the rotating shaft (31) comprises a front shaft extension end (311) and a rear shaft extension end (312), the front shaft extension end (311) extends into the cavity (10) and is connected with the wind wheel (2), rear shaft stretches end (312) and is connected with radiator fan (4), installs magnetic ring (5), its characterized in that on the rear shaft end: install between rear end cap (35) and radiator fan (4) block (6), be equipped with holding chamber (60) in block (6), install control circuit board (7) of taking electronic component in holding chamber (60), magnetic ring (5) are located holding chamber (60), cooperate the response between control circuit board (7) of taking electronic component and magnetic ring (5), block off rear end cap (35) partly in block (6), form the air runner between rear end louvre (351) and radiator fan (4) of partial rear end cap (35) of not sheltering from.
2. The induced draft fan of claim 1, wherein: the cap (6) is semicircular.
3. The induced draft fan according to claim 1 or 2, wherein: the cover cap (6) comprises an end plate (61), a side plate (62) and an arc plate (63) which axially extend from the edge of the end plate (61), a containing cavity (60) is formed by enclosing the end plate (61), the side plate (62) and the arc plate (63), a shaft extending hole (611) is formed in the end plate (61), and the extending containing cavity (60) of the rear shaft extending end (312) extends out of the shaft extending hole (611) to be connected with the cooling fan (4).
4. The induced draft fan of claim 3, wherein: a plurality of mounting seats (632) are arranged on the inner side wall (631) of the arc plate (63), first mounting holes (633) are formed in the mounting seats (632), second mounting holes (352) corresponding to the first mounting holes (633) are formed in the rear end cover (35), and the cover cap (6) is locked on the rear end cover (35) through the first mounting holes (633) and the second mounting holes (352) which are penetrated through bolts.
5. The induced draft fan of claim 4, wherein: be equipped with a plurality of erection columns (634) on inside wall (631) of circular arc board (63), be equipped with third mounting hole (635) on erection column (634), be equipped with fourth mounting hole (71) that correspond with third mounting hole (635) on control scheme board (7), through screw precession fourth mounting hole (71) and third mounting hole (635), with control scheme board (7) locking in holding chamber (60) of block (6).
6. The induced draft fan of claim 5, wherein: the bottom of arc plate (63) is equipped with wire hole (636), is equipped with boss (637) on inside wall (631) of arc plate (63), and boss (637) and wire hole (636) position are corresponding.
7. The induced draft fan of claim 6, wherein: a groove (639) is arranged on the outer side wall (638) of the circular arc plate (63), and the positions of the groove (639) and the boss (637) correspond to each other.
8. The induced draft fan of claim 3, wherein: the middle of the side plate (62) is provided with an arc surface (621), and the arc surface (621) corresponds to the position of the magnetic ring (5).
9. The induced draft fan of claim 1, wherein: be equipped with motor support (8) between front end housing (34) and spiral case (1), enclose between the roof of motor support (8), front end housing (34) and spiral case (1) and enclose and hold chamber (100), hold and have placed fan blade (9) in chamber (100), fan blade (9) are connected with front shaft extension end (311), are equipped with a plurality of ventilation holes (81) on the lateral surface of motor support (8).
10. The induced draft fan of claim 9, wherein: the front end cover (34) and the rear end cover (35) are further provided with front heat dissipation holes (342) and rear heat dissipation holes (353), and the front heat dissipation holes (341), the rear heat dissipation holes (351), the front heat dissipation holes (342), the rear heat dissipation holes (353) and the ventilation holes (81) are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023031988.8U CN214101060U (en) | 2020-12-16 | 2020-12-16 | an induced draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023031988.8U CN214101060U (en) | 2020-12-16 | 2020-12-16 | an induced draft fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214101060U true CN214101060U (en) | 2021-08-31 |
Family
ID=77428791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023031988.8U Active CN214101060U (en) | 2020-12-16 | 2020-12-16 | an induced draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214101060U (en) |
-
2020
- 2020-12-16 CN CN202023031988.8U patent/CN214101060U/en active Active
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