CN202125445U - Explosion-proof axial flow fan for outer rotor motor - Google Patents
Explosion-proof axial flow fan for outer rotor motor Download PDFInfo
- Publication number
- CN202125445U CN202125445U CN2011202228692U CN201120222869U CN202125445U CN 202125445 U CN202125445 U CN 202125445U CN 2011202228692 U CN2011202228692 U CN 2011202228692U CN 201120222869 U CN201120222869 U CN 201120222869U CN 202125445 U CN202125445 U CN 202125445U
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- Prior art keywords
- external rotor
- electric machine
- rotor electric
- flame
- stationary axle
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Abstract
The utility model relates to an explosion-proof axial flow fan for an outer rotor motor, which comprises the outer rotor motor and is characterized by further comprising an impeller, a fan housing, two triangular support frames and a junction box. The two triangular support frames are parallelly arranged and respectively fixed in the fan housing, the centers of the two triangular support frames are both provided with installing base holes, the outer rotor motor is arranged between the two triangular support frames, two ends of a central fixing shaft of the outer rotor motor are inserted into the installing base holes of the centers of the two triangular support frames respectively, and the fixing shaft is fixed in the installing base holes and cannot rotate. The impeller and two end covers are fixed on an outer rotor of the outer rotor motor, the junction box is installed on the outer wall of the fan housing, and an outgoing line of the outer rotor motor penetrates through the fan housing wall to be connected into the junction box. The explosion-proof three-phase asynchronous outer rotor motor and the junction box with an explosion-proof structure are adopted, and the explosion-proof rating reaches ExdIIBT4.
Description
Technical field
The utility model relates to a kind of forced air cooling equipment that is applicable to the explosion-proof frequency conversion speed-adjustable motor of the high H180 in center ~ H355 support, specifically is a kind of flame-proof type external rotor electric machine axial-flow blower.
Background technique
Along with developing rapidly of converter technique, the variable-frequency motor with energy-saving and cost-reducing effect is used widely in every profession and trade, and the demand that need have the flame-proof converter motor of using in the explosive gas atmosphere in chemical industry, oil, mine etc. also increases day by day.But the forced air cooling equipment of existing flame-proof converter motor does not catch up with growth requirement, generally has only the blasting resistance structure of INCREASEDSAFETY " e type ", can't satisfy the environmental requirement of flame-proof type " d type ".
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the existing technology, the flame-proof type external rotor electric machine axial-flow blower that provides a kind of explosive-proof grade to reach " Exd II BT4 ", and it is applicable on the explosion-proof frequency conversion speed-adjustable motor of the high H180 in center ~ H355 support.
The technological scheme that provides according to the utility model: a kind of flame-proof type external rotor electric machine axial-flow blower; Comprise external rotor electric machine; It is characterized in that: also include impeller, fan housing shell, triangular support bracket and terminal box, said triangular support bracket has two, and two triangular support brackets laterally arrange; Be separately fixed in the fan housing shell, the center of two triangular support brackets all offers the fitting seat hole; Said external rotor electric machine is arranged between two triangular support brackets, and insert respectively in the fitting seat hole at two triangular support bracket centers at the two ends of external rotor electric machine central fixed shaft, and stationary axle is fixed in the fitting seat hole not rotatable; Said impeller is fixed on the external rotor of external rotor electric machine with two end caps, and terminal box is installed on the fan housing shell outer wall, and the lighting outlet of said external rotor electric machine passes in the fan housing shell wall thereto.
As the further improvement of the utility model, the periphery wall of said external rotor is provided with the flange circle, and said impeller inner hole wall is provided with fixed plate, and fixed plate is fixedly connected with the flange circle.
As the further improvement of the utility model, said external rotor electric machine comprises external rotor and inner stator, and inner stator is coaxial to be arranged in the external rotor, is embedded with coil on the inner stator, is connected with lighting outlet on the coil; Two end caps are installed on the both ends of the surface of said external rotor, and said inner stator center is run through and close-fitting has stationary axle, and stretch out from the center of two end caps at the stationary axle two ends, and two end caps are assemblied on the stationary axle through bearing respectively; Said stationary axle one end has the fixedly tapped hole and the plane of usefulness; The sidewall and the axial centre of the stationary axle the other end offer threading hole; Lighting outlet on the coil passes through the protecting jacket of threading hole and stationary axle end, is filled with the explosion-proof filler of certain-length between lighting outlet outer wall and the threading hole inwall.
Further improvement as the utility model; One end of said external rotor electric machine central fixed shaft is provided with the fixedly plane of usefulness; Be welded with lock washer on the corresponding triangular support bracket of this end of stationary axle; Lock washer matches with the plane on the stationary axle, plays the stopping function that the restriction stationary axle rotates.
As the further improvement of the utility model, the inlet side of said fan housing shell is provided with protective net.Preferably, said protective net adopts steel wire or adopts and dash the Mild Steel Expanded Sheets that plurality of square holes is arranged.
As the further improvement of the utility model, the gap between said impeller tips and the fan housing shell inwall should be greater than 1/100 of impeller maximum diameter, and should be not less than 5mm.
As the further improvement of the utility model, said terminal box comprises cassette holder, lid and tenminal block, is welded with fitting seat on the outer wall of fan housing shell, and cassette holder is fixed on the fitting seat, and tenminal block is installed in the cassette holder, and lid is being assembled in the sealing of cassette holder opening; Said cassette holder offers wire-feeding hold on the bottom, and inlet wire seal ring and inlet wire gland nut are housed in the wire-feeding hold, and the lighting outlet of said external rotor electric machine penetrates wire-feeding hold, passes and is connected on the inlet wire tenminal block from the center of inlet wire seal ring and inlet wire gland nut; Said cassette holder sidewall offers wire outlet hole, and outlet seal ring and outlet gland nut are housed in the wire outlet hole.
Further improvement as the utility model; Said lid is fixed on the cassette holder; Periphery on lid seam plane is provided with a circle convex edge, and the internal diameter size of the outside dimension of convex edge and cassette holder opening is suitable, constitutes flame proof seam mating face between convex edge outer wall and the cassette holder opening inwall.
As the further improvement of the utility model, said lid seam offers the groove that can hold O-ring seals on the plane, and O-ring seals is embedded in groove.
The utility model compared with prior art; Advantage is: the utility model has adopted phase asynchronous external rotor electric machine of flame-proof type and the terminal box with flame-proof type structure; Can satisfy GB3836.1-2010 " the explosive atmosphere section 1: Device-General requires " and GB3836.2-2010 " explosive atmosphere part 2: by the equipment of flame-proof enclosure " d " protection ", explosive-proof grade reaches " Exd II BT4 ".The working power of the utility model is 90W ~ 600W, on the explosion-proof frequency conversion speed-adjustable motor of the high H180 in the center that is applicable to ~ H355 support, has widened the scope that variable-frequency motor uses.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the A-A office sectional view among Fig. 1.
Description of reference numerals: 1-external rotor electric machine; 1.1-end cap; 1.2-bearing; 1.3-stationary axle; 1.4-coil; 1.5-inner stator; 1.6-external rotor; 1.7-flange circle; 1.8-explosion-proof filler; 1.9-protecting jacket; 1.10-lighting outlet; 1.11-plane; 1.12-tapped hole; The 2-impeller; 2.1-fixed plate; 3-fan housing shell; The 4-triangular support bracket; The 5-terminal box; The 6-protective net; The 7-fitting seat; The 8-cassette holder; 9-inlet wire seal ring; 10-inlet wire gland nut; The 11-lid; 11.1-convex edge; 12-flame proof seam mating face; The 13-lock washer; The 14-tenminal block; 15-O shape seal ring; 16-outlet seal ring; 17-outlet gland nut.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
Like Fig. 1, shown in Figure 2, described flame-proof type external rotor electric machine axial-flow blower mainly is made up of component such as external rotor electric machine 1, impeller 2, fan housing shell 3, triangular support bracket 4 and terminal boxes 5; Said triangular support bracket 4 has two, and two triangular support brackets 4 laterally arrange, and is separately fixed in the fan housing shell 3, and the center of two triangular support brackets 4 all offers the fitting seat hole; Said external rotor electric machine 1 is arranged between two triangular support brackets 4; External rotor electric machine 1 is selected the phase asynchronous external rotor electric machine 1 of flame-proof type of shaft extension fixed installation form for use; Insert respectively in the fitting seat hole at two triangular support bracket 4 centers at the two ends of external rotor electric machine 1 central fixed shaft 1.3; One end of stationary axle 1.3 is provided with the fixedly plane 1.11 of usefulness, and is welded with lock washer 13 on the corresponding triangular support bracket 4 of stationary axle 1.3 these ends, and lock washer 13 matches with the plane 1.11 on the stationary axle 1.3; Play the stopping function that restriction stationary axle 1.3 rotates, it is not rotatable to make that stationary axle 1.3 is fixed in the fitting seat hole; Said impeller 2 is fixed on the external rotor 1.6 of external rotor electric machine 1 with two end caps, and terminal box 5 is installed on fan housing shell 3 outer walls, and the lighting outlet 1.10 of said external rotor electric machine 1 passes in the fan housing shell 3 wall theretos 5.
Provide a kind of like Fig. 1, external rotor electric machine 1 shown in Figure 3 among the embodiment, it mainly is made up of end cap 1.1, bearing 1.2, stationary axle 1.3, coil 1.4, inner stator 1.5, external rotor 1.6, explosion-proof filler 1.8, protecting jacket 1.9 and lighting outlet 1.10; Inner stator 1.5 coaxial being arranged in the external rotor 1.6 are embedded with coil 1.4 on the inner stator 1.5, be connected with lighting outlet 1.10 on the coil 1.4; Two end caps 1.1 are installed on the both ends of the surface of said external rotor 1.6; Said inner stator 1.5 centers are run through and close-fitting has stationary axle 1.3; Stretch out from the center of two end caps 1.1 at stationary axle 1.3 two ends, and two end caps 1.1 are assemblied on the stationary axle 1.3 through bearing 1.2 respectively; Said stationary axle 1.3 1 ends have the fixedly tapped hole 1.12 and plane 1.11 of usefulness; The sidewall and the axial centre of stationary axle 1.3 the other ends offer threading hole; Lighting outlet 1.10 on the coil 1.4 passes through the protecting jacket 1.9 of threading hole and stationary axle 1.3 ends; Be filled with the explosion-proof filler 1.8 of certain-length between lighting outlet 1.10 outer walls and the threading hole inwall, the explosion-proof filler 1.8 preferred epoxy resin that adopt.
As shown in Figure 1, the periphery wall of said external rotor 1.6 is provided with flange circle 1.7, and said impeller inner hole wall is provided with fixed plate 2.1, and fixed plate 2.1 utilizes screw to be connected with flange circle 1.7.Certainly, external rotor 1.6 also can directly be cast straight cylinder type, and gold machining goes out the structure that can be press-fitted with impeller 2 on its periphery wall then.
As shown in Figure 2, said terminal box 5 mainly is made up of cassette holder 8, inlet wire seal ring 9, inlet wire gland nut 10, lid 11, tenminal block 14, O-ring seals 15, outlet seal ring 16 and outlet gland nut 17; Be welded with fitting seat 7 on the outer wall of fan housing shell 3, cassette holder 8 is screwed on fitting seat 7, and tenminal block 14 usefulness screws are installed in the cassette holder 8, and lid 11 is being assembled in the sealing of cassette holder 8 openings; Said cassette holder offers wire-feeding hold on 8 bottoms; Inlet wire seal ring 9 and inlet wire gland nut 10 are housed in the wire-feeding hold; The lighting outlet 1.10 of said external rotor electric machine 1 penetrates wire-feeding hold, passes and is connected on the inlet wire tenminal block 14 from the center of inlet wire seal ring 9 and inlet wire gland nut 10; During assembling, tighten inlet wire gland nut 10, inlet wire seal ring 9 is shunk, embrace lighting outlet 1.10 tightly, play explosion-proof effectively.Said cassette holder 8 sidewalls offer wire outlet hole, and outlet seal ring 16 and outlet gland nut 17 are housed in the wire outlet hole, and outlet seal ring 16 also is the effect of playing flame proof with outlet gland nut 17.
As shown in Figure 2; Said lid 11 utilizes screw on cassette holder 8; Periphery on lid 11 seam planes is provided with a circle convex edge 11.1; The internal diameter size of the outside dimension of convex edge 11.1 and cassette holder 8 openings is suitable, constitutes flame proof seam mating face 12 between convex edge 11.1 outer walls and the cassette holder 8 opening inwalls; Flame proof seam mating face 12 makes terminal box 5 have outstanding explosion insulation performance.Further, said lid offers the groove that can hold O-ring seals 15 on the 11 seam planes, and O-ring seals 15 is embedded in groove, to play better explosion-proof and seal action.
In addition, the inlet side of said fan housing shell 3 is provided with protective net 6, and protective net 6 is used to prevent that foreign matter from getting in the fan housing shell 3, avoids impeller 2 damages.Said protective net 6 can adopt steel wire or adopt and dash the Mild Steel Expanded Sheets that plurality of square holes is arranged.Gap between most advanced and sophisticated and fan housing shell 3 inwalls of said impeller 2 should be greater than 1/100 of impeller 2 maximum diameters, and should be not less than 5mm, can prevent the generation of spark effectively, to play explosion-proof, guarantee the utility model safe and highly efficient operation.
Claims (10)
1. flame-proof type external rotor electric machine axial-flow blower; Comprise external rotor electric machine (1); It is characterized in that: also include impeller (2), fan housing shell (3), triangular support bracket (4) and terminal box (5), said triangular support bracket (4) has two, and two triangular support brackets (4) laterally arrange; Be separately fixed in the fan housing shell (3), the center of two triangular support brackets (4) all offers the fitting seat hole; Said external rotor electric machine (1) is arranged between two triangular support brackets (4); Insert respectively in the fitting seat hole at two triangular support brackets (4) center at the two ends of external rotor electric machine (1) central fixed shaft (1.3), and stationary axle (1.3) is fixed in the fitting seat hole not rotatable; Said impeller (2) is fixed on the external rotor (1.6) of external rotor electric machine (1) with two end caps; Terminal box (5) is installed on fan housing shell (3) outer wall, and the lighting outlet (1.10) of said external rotor electric machine (1) passes in fan housing shell (3) the wall thereto (5).
2. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 1; It is characterized in that: the periphery wall of said external rotor (1.6) is provided with flange circle (1.7); Said impeller (2) inner hole wall is provided with fixed plate (2.1), and fixed plate (2.1) is fixedly connected with flange circle (1.7).
3. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 1; It is characterized in that: said external rotor electric machine (1) comprises external rotor (1.6) and inner stator (1.5); Inner stator (1.5) is coaxial to be arranged in the external rotor (1.6); Be embedded with coil (1.4) on the inner stator (1.5), be connected with lighting outlet (1.10) on the coil (1.4); Two end caps (1.1) are installed on the both ends of the surface of said external rotor (1.6); Said inner stator (1.5) center is run through and close-fitting has stationary axle (1.3); Stretch out from the center of two end caps (1.1) at stationary axle (1.3) two ends, and two end caps (1.1) are assemblied on the stationary axle (1.3) through bearing (1.2) respectively; Said stationary axle (1.3) one ends have the fixedly tapped hole of usefulness (1.12) and plane (1.11); The sidewall and the axial centre of stationary axle (1.3) the other end offer threading hole; Lighting outlet (1.10) on the coil (1.4) passes through the protecting jacket (1.9) of threading hole and stationary axle (1.3) end, is filled with the explosion-proof filler (1.8) of certain-length between lighting outlet (1.10) outer wall and the threading hole inwall.
4. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 1; It is characterized in that: an end of said external rotor electric machine (1) central fixed shaft (1.3) is provided with fixedly the plane of usefulness (1.11); Be welded with lock washer (13) on the corresponding triangular support bracket of this end of stationary axle (1.3) (4); Lock washer (13) matches with the plane (1.11) on the stationary axle (1.3), plays the stopping function that restriction stationary axle (1.3) rotates.
5. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 1 is characterized in that: the inlet side of said fan housing shell (3) is provided with protective net (6).
6. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 5 is characterized in that: said protective net (6) adopts steel wire or adopts and dash the Mild Steel Expanded Sheets that plurality of square holes is arranged.
7. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 1 is characterized in that: the gap between most advanced and sophisticated and fan housing shell (3) inwall of said impeller (2) should be greater than 1/100 of impeller (2) maximum diameter, and should be not less than 5mm.
8. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 1; It is characterized in that: said terminal box (5) comprises cassette holder (8), lid (11) and tenminal block (14); Be welded with fitting seat (7) on the outer wall of fan housing shell (3); Cassette holder (8) is fixed on the fitting seat (7), and tenminal block (14) is installed in the cassette holder (8), and lid (11) is being assembled in the sealing of cassette holder (8) opening; Said cassette holder (8) offers wire-feeding hold on the bottom; Inlet wire seal ring (9) and inlet wire gland nut (10) are housed in the wire-feeding hold; The lighting outlet (1.10) of said external rotor electric machine (1) penetrates wire-feeding hold, passes and is connected on the inlet wire tenminal block (14) from the center of inlet wire seal ring (9) and inlet wire gland nut (10); Said cassette holder (8) sidewall offers wire outlet hole, and outlet seal ring (16) and outlet gland nut (17) are housed in the wire outlet hole.
9. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 8; It is characterized in that: said lid (11) is fixed on the cassette holder (8); Periphery on lid (11) seam plane is provided with a circle convex edge (11.1); The internal diameter size of the outside dimension of convex edge (11.1) and cassette holder (8) opening is suitable, constitutes flame proof seam mating face (12) between convex edge (11.1) outer wall and cassette holder (8) the opening inwall.
10. flame-proof type external rotor electric machine axial-flow blower as claimed in claim 8 is characterized in that: said lid (11) offers the groove that can hold O-ring seals (15) on the seam plane, and O-ring seals (15) is embedded in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202228692U CN202125445U (en) | 2011-06-28 | 2011-06-28 | Explosion-proof axial flow fan for outer rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202228692U CN202125445U (en) | 2011-06-28 | 2011-06-28 | Explosion-proof axial flow fan for outer rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202125445U true CN202125445U (en) | 2012-01-25 |
Family
ID=45488513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202228692U Expired - Fee Related CN202125445U (en) | 2011-06-28 | 2011-06-28 | Explosion-proof axial flow fan for outer rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202125445U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251975A (en) * | 2011-06-28 | 2011-11-23 | 无锡锡山特种风机有限公司 | Axial flow fan of explosion-proof-type external rotor motor |
| CN103516116A (en) * | 2013-10-23 | 2014-01-15 | 中达电机股份有限公司 | Temperature measuring junction box device |
| CN110081005A (en) * | 2019-04-30 | 2019-08-02 | 鲍尘琨 | A kind of large axial flow fan of shaftless adjusting rotor blade and synchrolock leaf |
-
2011
- 2011-06-28 CN CN2011202228692U patent/CN202125445U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251975A (en) * | 2011-06-28 | 2011-11-23 | 无锡锡山特种风机有限公司 | Axial flow fan of explosion-proof-type external rotor motor |
| CN103516116A (en) * | 2013-10-23 | 2014-01-15 | 中达电机股份有限公司 | Temperature measuring junction box device |
| CN110081005A (en) * | 2019-04-30 | 2019-08-02 | 鲍尘琨 | A kind of large axial flow fan of shaftless adjusting rotor blade and synchrolock leaf |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20130628 |