CN114151371A - Direct-current brushless fan running at low temperature of minus 50 DEG C - Google Patents
Direct-current brushless fan running at low temperature of minus 50 DEG C Download PDFInfo
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- CN114151371A CN114151371A CN202210015691.7A CN202210015691A CN114151371A CN 114151371 A CN114151371 A CN 114151371A CN 202210015691 A CN202210015691 A CN 202210015691A CN 114151371 A CN114151371 A CN 114151371A
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- fan
- shell
- main body
- brushless
- minus
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- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0693—Details or arrangements of the wiring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a direct-current brushless fan running at a low temperature of minus 50 ℃, which comprises a shell, wherein the front side of the shell is provided with an opening, the front side of the shell is provided with a side door, the left side of the shell is provided with a mounting groove, the inner cavity of the shell is provided with a fan main body, the left side of the fan main body penetrates through the mounting groove and extends to the left side of the shell, mounting mechanisms are arranged at the positions, close to the top and the bottom, of the right side of the fan main body, the right side of the inner wall of the shell is bonded with an electric connection plate, and the fan can run normally by adopting a mode that an IC (integrated circuit) captures a reverse electromotive force generated by a motor to switch phases, so that the distance problem needing to be paid attention when a Hall sensor is used can be avoided, and the cost for using the Hall sensor can be saved; because no Hall sensor is arranged, the circuit part can be placed outside, so that when the fan works at minus 50 ℃, the circuit works at normal temperature, and the requirement that the fan can work normally at minus 50 ℃ is met.
Description
Technical Field
The invention relates to the technical field of direct-current brushless fans, in particular to a direct-current brushless fan running at a low temperature of minus 50 ℃.
Background
The existing direct current brushless fan motor group and circuit part are inside the fan, the hall sensor senses the rotor position output signal, let the motor group produce alternating magnetic field, drive the rotor to rotate, its principle is to utilize the hall sensor to sense the rotor magnetic field, produce the signal of switching logic phase place, the drive motor group produces alternating magnetic field, drive the rotor to rotate, thereby drive the fan, its shortcoming generally has the distance requirement between hall sensor and the rotor, the distance is too far away and leads to the response badly easily, this is that one place of prior art is not enough, and electronic components can only work at temperature-40 degrees to 125 degrees, thereby it can work the environmental region to have restricted, another place of prior art is not enough, so need to propose a direct current brushless fan of minus 50 degrees low temperature operation here to solve the not enough of prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a direct-current brushless fan running at a low temperature of minus 50 ℃.
In order to achieve the purpose, the invention provides the following technical scheme: a direct current brushless fan running at a low temperature of minus 50 ℃ comprises a shell, wherein the front side of the shell is provided with an opening, the front side of the shell is provided with a side door, the left side of the shell is provided with a mounting groove, the inner cavity of the shell is provided with a fan body, the left side of the fan body penetrates through the mounting groove and extends to the left side of the shell, the right side of the fan body is provided with mounting mechanisms close to the top and the bottom, the right side of the inner wall of the shell is bonded with an electric board, the top and the bottom of the electric board are both provided with wiring blocks, the right side of the electric board is electrically connected with a first lead, the right end of the first lead penetrates through the shell and extends to the right side of the shell, the right side of the fan body is provided with an IC catching motor, the bottom of the IC catching motor is bonded with the inner wall of the shell, the right side of the fan body and the right side of the IC catching motor are respectively and electrically connected with a second lead and a third lead, one end of the second lead and one end of the third lead are respectively and electrically connected with the adjacent junction blocks.
Preferably, the mounting mechanism comprises connecting pieces, the connecting pieces are fixedly connected with the side wall of the fan body, two of the connecting pieces are far away from one side and are provided with slots, the left side of the shell is close to the top and is provided with side grooves at the bottom, the inner cavity of each side groove is movably connected with a cross rod, the left end of each cross rod extends to the outer side of each side groove and is fixedly connected with a side block, one side of each cross rod is close to a round pipe at the right end, a spring is arranged in the inner cavity of each round pipe, one end of each spring is fixedly connected with the corresponding cross rod, the other end of each spring is fixedly connected with a stop block, one end of each stop block, far away from the corresponding spring, is fixedly connected with an insertion rod, and one end of each insertion rod, far away from the corresponding stop block, penetrates through the side grooves and is inserted into the inner cavity of the adjacent slots.
Preferably, two the equal fixedly connected with riser in one side is kept away from mutually to the horizontal pole, one side fixedly connected with stopper, two of the horizontal pole is kept away from to the riser the side inslot wall and all seted up the spacing groove in keeping away from one side, stopper swing joint is at spacing inslot chamber.
Preferably, the inserted bar left side fixedly connected with connecting rod, the one end that the inserted bar was kept away from to the connecting rod extends to the side channel outside.
Preferably, the inner wall of the mounting groove is provided with a non-slip mat, and one side of the non-slip mat is attached to the outer wall of the fan main body.
Preferably, a handle is fixedly mounted on the front side of the side door.
Preferably, the two terminal blocks are arranged up and down symmetrically by taking the central axis of the electric connection plate as a symmetry axis.
A use method of a direct-current brushless fan running at a low temperature of minus 50 ℃ comprises the following steps:
s1: when the fan is used, the side door is opened through the handle, the fan main body which is wired in advance is placed inside the shell, the left side of the fan main body penetrates through the mounting groove, and preliminary stabilization is carried out through the anti-slip mat;
s2: at the moment, the bottom of an IC catching motor connected with the fan main body is attached to the inner wall of the shell for supporting, then a power connection plate connected with a second lead and a third lead can be bonded to the inner wall of the shell through glue, and the first lead is extended to the outside of the shell;
s3: then, the worker needs to sequentially push the two side blocks, so that the side blocks push the cross rod to move, the cross rod drives the circular tube to move, the circular tube drives the stop block to move through the spring, and the stop block drives the inserted rod to move;
s4: when the inserted bar moves to be opposite to one side of the side groove, the round tube can be popped out under the action of the spring, so that the inserted bar is inserted into the inner cavity of the adjacent slot, the connecting piece is clamped and positioned, and the positioning and installation operation is further carried out on the fan main body;
s5: in the follow-up low temperature condition use, staff's accessible outside first wire drive IC catches the motor for the IC catches the motor and produces reverse electromotive force and switches the phase place, continues work with this drive fan main part, can effectively avoid under the low temperature condition, and electronic components can not normally work's problem.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the mode that the IC captures the reverse electromotive force generated by the motor to switch the phase, so that the fan normally runs, can avoid the distance problem needing attention when the Hall sensor is used, and can save the cost for using the Hall sensor;
2. because the Hall sensor is not arranged, the circuit part can be placed outside, so that when the fan works at minus 50 ℃, the circuit works at normal temperature, and the requirement that the fan can work normally at minus 50 ℃ is met.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a side view of a blower of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 2 according to the present invention;
fig. 5 is a schematic diagram of the circuit of the present invention.
Reference numbers in the figures: 1. a housing; 2. a power connection plate; 3. a junction block; 4. a first conductive line; 5. a second conductive line; 6. a third conductive line; 7. an IC capture motor; 8. a fan main body; 9. a connecting member; 10. a side block; 11. a cross bar; 12. a limiting groove; 13. a limiting block; 14. a vertical block; 15. a connecting rod; 16. a side groove; 17. a spring; 18. a circular tube; 19. a stopper; 20. inserting a rod; 21. a slot; 22. a side door; 23. a handle; 24. mounting grooves; 25. a non-slip mat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a direct current brushless fan running at a low temperature of minus 50 ℃ comprises a shell 1, the front side of the shell 1 is provided with an opening, the front side of the shell 1 is provided with a side door 22, the front side of the side door 22 is fixedly provided with a handle 23, the side door 22 is convenient to open through the opening, the left side of the shell 1 is provided with a mounting groove 24, an inner cavity of the shell 1 is provided with a fan main body 8, the left side of the fan main body 8 penetrates through the mounting groove 24 and extends to the left side of the shell 1, the inner wall of the mounting groove 24 is provided with an anti-slip pad 25, one side of the anti-slip pad 25 is attached to the outer wall of the fan main body 8, the friction between the inner wall of the mounting groove 24 and the outer wall of the fan main body 8 is increased through the arrangement, the right side of the fan main body 8, the top and the bottom are both provided with a mounting mechanism, the mounting mechanism comprises a connecting piece 9, the connecting piece 9 is fixedly connected with the side wall of the fan main body 8, and the two connecting pieces 9 are both provided with slots 21, side grooves 16 are respectively arranged at the left side of the shell 1 close to the top and the bottom, cross bars 11 are movably connected in the inner cavities of the side grooves 16, vertical blocks 14 are fixedly connected at the sides of the two cross bars 11 far away from the cross bars 11, limiting blocks 13 are fixedly connected at the sides of the vertical blocks 14 far away from the cross bars 11, limiting grooves 12 are respectively arranged at the sides of the inner walls of the two side grooves 16 far away from the inner walls, the limiting blocks 13 are movably connected in the inner cavities of the limiting grooves 12, the cross bars 11 can only move in a limited track through the arrangement, the left end of each cross bar 11 extends to the outer side of the corresponding side groove 16 and is fixedly connected with the corresponding side block 10, a round pipe 18 is fixedly connected at the position of one side of each cross bar 11 close to the right end, a spring 17 is arranged in the inner cavity of the round pipe 18, one end of the spring 17 is fixedly connected with the cross bar 11, a stop 19 is fixedly connected with the other end of the spring 19, an insert rod 20 far away from the end of the stop 19 penetrates through the side grooves 16, the fan main body 8 is fixedly operated through the arrangement that the fan main body is inserted and connected in the inner cavity of the adjacent slot 21, the left side of the inserted rod 20 is fixedly connected with a connecting rod 15, one end of the connecting rod 15 far away from the inserted rod 20 extends to the outer side of the side slot 16, the fan main body 8 is convenient to disassemble through the arrangement, the right side of the inner wall of the shell 1 is bonded with the electric connection plate 2, the top and the bottom of the electric connection plate 2 are both provided with the wiring blocks 3, the two wiring blocks 3 are arranged up and down symmetrically by taking the central axis of the electric connection plate 2 as a symmetry axis, the right side of the electric connection plate 2 is electrically connected with the first lead 4, the right end of the first lead 4 penetrates through the shell 1, and extend to the shell 1 right side, fan main part 8 right side is installed IC and is caught motor 7, and IC catches motor 7 bottom and the laminating of 1 inner wall of shell, and fan main part 8 right side and IC catch motor 7 right side and connect electric connection respectively with second wire 5 and third wire 6, and second wire 5 and 6 one end of third wire are respectively with adjacent lug 3 electric connection.
A use method of a direct-current brushless fan running at a low temperature of minus 50 ℃ comprises the following steps:
s1: when the fan is used, the side door 22 is opened through the handle 23, the fan main body 8 which is wired in advance is placed in the shell 1, the left side of the fan main body 8 penetrates through the mounting groove 24, and preliminary stabilization is carried out through the anti-slip mat 25;
s2: at the moment, the bottom of an IC catching motor 7 connected with a fan main body 8 is attached to the inner wall of the shell 1 for supporting, then a power connection plate 2 connected with a second lead 5 and a third lead 6 can be bonded to the inner wall of the shell 1 through glue, and a first lead 4 is extended to the outside of the shell 1;
s3: then, the worker needs to sequentially push the two side blocks 10, so that the side blocks 10 push the cross rod 11 to move, the cross rod 11 drives the circular tube 18 to move, the circular tube 18 drives the stop block 19 to move through the spring 17, and the stop block 19 drives the inserted rod 20 to move;
s4: when the inserted bar 20 moves to a position opposite to one side of the side groove 16, the round tube 18 can be ejected out under the action of the spring 17, so that the inserted bar 20 is inserted into the inner cavity of the adjacent slot 21, the connecting piece 9 is clamped and positioned, and the fan main body 8 is further positioned and installed;
s5: in the subsequent use under the low temperature condition, staff can drive the IC catching motor 7 through the external first lead 4, so that the IC catching motor 7 generates reverse electromotive force to switch phases, the fan main body 8 is driven to continue working, and the problem that electronic components cannot normally work under the low temperature condition can be effectively solved.
The working principle is as follows: when the invention is used, firstly, the side door 22 is opened through the handle 23, the fan main body 8 which is wired in advance is placed in the shell 1, the left side of the fan main body 8 passes through the mounting groove 24 and is primarily stabilized through the anti-skid pad 25, then the bottom of the IC catching motor 7 connected with the fan main body 8 is attached to the inner wall of the shell 1 for supporting, then the electric plate 2 connected with the second lead 5 and the third lead 6 is adhered to the inner wall of the shell 1 through glue, the first lead 4 is extended to the outside of the shell 1, then a worker needs to sequentially push the two side blocks 10, so that the side blocks 10 push the cross rod 11 to move, the cross rod 11 drives the circular pipe 18 to move, the circular pipe 18 drives the stop block 19 to move through the spring 17, the stop block 19 drives the inserted rod 20 to move, when the inserted rod 20 moves to be opposite to one side of the side groove 16, the circular pipe 18 is popped up under the action of the spring 17, the inserting rod 20 is inserted into the inner cavity of the adjacent slot 21, the connecting piece 9 is clamped and positioned, the fan main body 8 is further positioned and installed, the IC capturing motor 7 can be driven by the external first lead 4 of a worker through subsequent low-temperature use, the IC capturing motor 7 generates reverse electromotive force to switch phases, the fan main body 8 is driven to continue working, and the problem that electronic components cannot normally work under the low-temperature condition can be effectively solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a direct current brushless fan of minus 50 degrees low temperature operation, includes shell (1), its characterized in that: the utility model discloses a fan, including shell (1), fan main body (8), wiring block (3), shell (1), mounting groove (24), fan main body (8), shell (1) front side, mounting groove (24) have been seted up to shell (1) left side, just shell (1) inner chamber is equipped with fan main body (8), fan main body (8) left side runs through mounting groove (24), and extends to shell (1) left side, just fan main body (8) right side is close to top and bottom department and all is equipped with installation mechanism, shell (1) inner wall right side bonds and has wiring board (2), wiring block (3) are all installed to wiring board (2) top and bottom, wiring board (2) right side electric connection has first wire (4), first wire (4) right-hand member runs through shell (1) to extend to shell (1) right side, fan main body (8) right side is installed IC and is caught motor (7), IC catches motor (7) bottom and shell (1) inner wall laminating, the fan main part (8) right side connects electric connection with IC to catch motor (7) right side respectively has second wire (5) and third wire (6), second wire (5) and third wire (6) one end respectively with adjacent lug (3) electric connection.
2. The brushless dc fan of claim 1, wherein the dc brushless dc fan is operable at a temperature of minus 50 degrees c, and wherein: the mounting mechanism comprises a connecting piece (9), the connecting piece (9) is fixedly connected with the side wall of the fan main body (8), two connecting pieces (9) are respectively provided with a slot (21) when being far away from one side, the left side of the shell (1) is close to the top and the bottom and is respectively provided with a side groove (16), the inner cavity of each side groove (16) is movably connected with a cross rod (11), the left end of each cross rod (11) extends to the outer side of each side groove (16) and is fixedly connected with a side block (10), one side of each cross rod (11) is close to the right end and is fixedly connected with a round pipe (18), the inner cavity of each round pipe (18) is provided with a spring (17), one end of each spring (17) is fixedly connected with the cross rod (11), the other end of each spring (17) is fixedly connected with a stop block (19), one end of each stop block (19) far away from the corresponding inserted rod (20) penetrates through each side groove (16), and is inserted into the inner cavity of the adjacent slot (21).
3. The brushless dc fan of claim 2, wherein the dc brushless dc fan is operable at a temperature of minus 50 degrees c, and wherein: two horizontal pole (11) keep away from equal fixedly connected with riser (14) in one side mutually, one side fixedly connected with stopper (13) of horizontal pole (11), two are kept away from in riser (14) one side fixedly connected with stopper (13) of horizontal pole (11) mutually, two spacing groove (12) have all been seted up to side groove (16) inner wall keeping away from one side mutually, stopper (13) swing joint is at spacing groove (12) inner chamber.
4. The brushless dc fan of claim 2, wherein the dc brushless dc fan is operable at a temperature of minus 50 degrees c, and wherein: inserted bar (20) left side fixedly connected with connecting rod (15), the one end that inserted bar (20) were kept away from in connecting rod (15) extends to the side groove (16) outside.
5. The brushless dc fan of claim 1, wherein the dc brushless dc fan is operable at a temperature of minus 50 degrees c, and wherein: non-slip mat (25) are installed to mounting groove (24) inner wall, non-slip mat (25) one side and the laminating of fan main part (8) outer wall.
6. The brushless dc fan of claim 1, wherein the dc brushless dc fan is operable at a temperature of minus 50 degrees c, and wherein: the front side of the side door (22) is fixedly provided with a handle (23).
7. The brushless dc fan of claim 1, wherein the dc brushless dc fan is operable at a temperature of minus 50 degrees c, and wherein: the two junction blocks (3) are arranged in a vertical symmetry mode by taking the central axis of the electric connection plate (2) as a symmetry axis.
8. The use method of the brushless direct current fan running at the low temperature of minus 50 ℃ according to any one of claims 1 to 7, characterized by comprising the following steps:
s1: when the fan is used, firstly, the side door (22) is opened through the handle (23), the fan main body (8) which is wired in advance is placed in the shell (1), the left side of the fan main body (8) penetrates through the mounting groove (24), and preliminary stabilization is carried out through the anti-slip mat (25);
s2: the bottom of an IC catching motor (7) connected with a fan main body (8) is attached to the inner wall of the shell (1) for supporting, then a power connection plate (2) connected with a second lead (5) and a third lead (6) can be bonded to the inner wall of the shell (1) through glue, and the first lead (4) is extended to the outside of the shell (1);
s3: then, the worker needs to sequentially push the two side blocks (10), so that the side blocks (10) push the cross rod (11) to move, the cross rod (11) drives the circular tube (18) to move, the circular tube (18) drives the stop block (19) to move through the spring (17), and the stop block (19) drives the inserted rod (20) to move;
s4: when the inserted bar (20) moves to the side opposite to the side groove (16), the round tube (18) can be ejected out under the action of the spring (17), so that the inserted bar (20) is inserted into the inner cavity of the adjacent slot (21), the connecting piece (9) is clamped and positioned, and the fan main body (8) is further positioned and installed;
s5: in the subsequent use under the low temperature condition, the staff can drive the IC catching motor (7) through the external first lead (4) so that the IC catching motor (7) generates reverse electromotive force to switch the phase, the fan main body (8) is driven to continue working, and the problem that the electronic components cannot normally work under the low temperature condition can be effectively solved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015691.7A CN114151371A (en) | 2022-01-07 | 2022-01-07 | Direct-current brushless fan running at low temperature of minus 50 DEG C |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015691.7A CN114151371A (en) | 2022-01-07 | 2022-01-07 | Direct-current brushless fan running at low temperature of minus 50 DEG C |
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| Publication Number | Publication Date |
|---|---|
| CN114151371A true CN114151371A (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210015691.7A Pending CN114151371A (en) | 2022-01-07 | 2022-01-07 | Direct-current brushless fan running at low temperature of minus 50 DEG C |
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| CN (1) | CN114151371A (en) |
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