CN112491200A - High-reliability brushless motor - Google Patents
High-reliability brushless motor Download PDFInfo
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- CN112491200A CN112491200A CN202011321920.5A CN202011321920A CN112491200A CN 112491200 A CN112491200 A CN 112491200A CN 202011321920 A CN202011321920 A CN 202011321920A CN 112491200 A CN112491200 A CN 112491200A
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- motor
- air flow
- area
- negative pressure
- brushless motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a high-reliability brushless motor, which comprises a motor main body and a motor shell, wherein the motor main body is internally provided with a rotor which is axially communicated, the motor main body is arranged in the motor shell, one end of the motor shell is provided with a top cover, the other end of the motor shell is provided with a bottom cover, and the rotor is provided with a movable impeller.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a high-reliability brushless motor.
Background
The brushless motor is composed of a motor main body and a driver, is an electromechanical integrated product, runs in an automatic control mode, does not need to start a winding on a rotor like a synchronous motor which is started in a heavy load mode under the condition of variable frequency speed regulation, and does not generate vibration and step-out when the load changes suddenly, so that the brushless motor is an outstanding part of the brushless motor, and meanwhile, the brushless motor also has the characteristics of low noise, high energy efficiency, ultra-strong durability and the like, and the motor for the dust collector is mainly divided into two types: dry motor and wet motor futilely, the dust catcher during operation mainly is that motor part and fan part play a role, motor part utilizes the inside continuous electromagnetic torque that produces of motor, drive the load through the pivot and do work, turn into mechanical energy with the electric energy, fan part is mainly rotatory through the high rotational speed of impeller and is made the air intake remove to produce the negative pressure and form the vacuum and then form suction, the air intake department of conventional brushless motor can not all be sealed, if sealed totally, can lead to circuit board and motor overheat and burn out in the short time, so motor part must have the air current through cooling the heat dissipation to it, however, current motor part for the dust catcher has following problem when using:
1. air enters and exits from an air inlet of the motor, external air dissipates heat of the motor through the motor, and when external air flow enters the motor, the noise generated by air flow impact is high due to the complex internal structure of the motor, so that the whole motor can generate noise, the use performance of the motor of the dust collector is greatly influenced, moreover, the motor part is an ash suction barrel of the dust collector in the complete machine state of the dust collector, the air inlet of the motor cannot be sealed, the ash suction barrel can be completely blocked by dust possibly when the air flow passes through the motor, once the motor is completely blocked, the motor is overheated, faults such as machine burning and the like occur, and the safety performance of the motor of the dust collector is reduced;
2. if the air is not taken from the air inlet of the motor, the cooling fan blade is independently added to dissipate the heat of the motor, the noise is still generated when the fan blade is adopted to dissipate the heat of the motor, and the efficiency of the motor is greatly reduced due to the addition of the fan blade, so that the dust collection effect of the dust collector is reduced;
therefore, a highly reliable brushless motor is required to solve the above problems.
Disclosure of Invention
The present invention is directed to a high-reliability brushless motor to solve the above problems.
In order to solve the technical problems, the invention provides the following technical scheme: a high-reliability brushless motor comprises a motor main body and a motor shell, wherein a rotor which is axially communicated is arranged in the motor main body, the motor main body is arranged in the motor shell, one end of the motor shell is provided with a top cover, the other end of the motor shell is provided with a bottom cover, and the rotor is provided with a movable impeller;
further, a negative pressure area is arranged at the bottom cover and is positioned below the movable impeller, a motor area is arranged in the motor main body and is positioned above the movable impeller;
further, no mechanical contact exists between the motor area and the movable impeller, and no gap exists;
further, a first air flow pipeline for air circulation is formed between the negative pressure area and one side of the movable impeller;
further, the first air flow pipeline penetrates through the motor shell, and a port of the first air flow pipeline is communicated with the outer wall of the motor shell;
further, the first airflow pipeline is used for flowing main working airflow, and the main working airflow flows through the motor shell from the negative pressure area;
further, a second air flow pipeline for air circulation is formed between the negative pressure area and the other side of the movable impeller;
further, the second air flow pipeline port is communicated with the top cover;
further, the second air flow pipeline penetrates through the motor area, and the second air flow pipeline also penetrates through the motor shell;
furthermore, the second air flow pipeline is used for flowing cooling air flow, and the air flow in the cold area sequentially flows through the motor area, the motor shell and the negative pressure area from the top cover;
compared with the prior art, the invention has the following beneficial effects:
1. compare with current motor mouth air inlet and carry out radiating mode to the motor, the phenomenon of air current striking motor can not appear, directly through the inside second air flow pipeline that runs through of motor main part to the negative pressure that produces when utilizing motor self operation dispels the heat to the motor district, and this motor does not have unnecessary noise and produces, makes the performance of motor greatly promote.
2. Compared with the existing mode of arranging a gap between the movable impeller and the motor area and radiating the heat of the motor by using the main air flow flowing through the motor during the operation and dust collection, the brushless motor effectively solves the problem that the efficiency of the motor is reduced although the motor is cooled because the main working air flow can radiate the heat of the motor area by a part, and the main working air flow of the brushless motor is completely used for the normal operation and dust collection of the motor and is completely separated from the second air flow pipeline, and the normal operation of the motor area and the cooling and heat radiation of the motor area are simultaneously carried out.
3. Compared with the existing mode of radiating the motor area by using the main working airflow, the cooling airflow flowing through the second airflow pipeline can effectively solve the problem that the motor area is possibly burnt due to the fact that the main working airflow flowing through the first airflow pipeline is blocked when the dust collector is in a saturated state, namely, under the condition that dust is fully collected.
4. Compare with current mode of dispelling the heat through increasing the flabellum to the motor, utilize the negative pressure district to breathe in and dispel the heat with external cooling air current flow through the second air current pipeline to the motor district, it is big to have solved the flabellum and rotate the noise when dispelling the heat to the motor, the inefficiency problem to, do not need to take the flabellum outward and also need not increase all the other parts or structure, can realize the automatic radiating effect of motor operation, can not influence the availability factor of motor simultaneously yet, the normal dust absorption function of dust catcher motor has been guaranteed.
5. The second air flow pipeline can be used for a dry motor of the dust collector and a dry and wet motor of the dust collector, can overcome the defects that cooling air is smaller when negative pressure is higher and the temperature of the motor and a PCB is higher when negative pressure is higher and the temperature of the motor and the PCB is higher when the second air flow pipeline is used for the dry and wet motor, can not add redundant components such as a fan, and ensures that the working efficiency of the motor is not lost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a top view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
in the figure: 1. a motor main body; 2. a motor housing; 3. a rotor; 4. a top cover; 5. a bottom cover; 6. a movable impeller; 7. a negative pressure region; 8. a motor section; 9. a first gas flow line; 10. a second gas flow line.
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.
Example (b): referring to fig. 1-3, the present invention provides the following technical solutions: a high-reliability brushless motor comprises a motor main body 1 and a motor shell 2, wherein a rotor 3 which is axially penetrated is arranged in the motor main body 1, the motor main body 1 is arranged in the motor shell 2, a top cover 4 is arranged at one end of the motor shell 2, a bottom cover 5 is arranged at the other end of the motor shell 2, and a movable impeller 6 is arranged on the rotor 3;
a negative pressure area 7 is arranged at the bottom cover 5, the negative pressure area 7 is positioned below the movable impeller 6, a motor area 8 is arranged in the motor main body 1, and the motor area 8 is positioned above the movable impeller 6;
no mechanical contact exists between the motor area 8 and the movable impeller 6, and no gap exists;
the negative pressure area 7 and one side of the movable impeller 6 form a first airflow pipeline 9 for air circulation;
the first air flow pipeline 9 penetrates through the motor shell 2, and the port of the first air flow pipeline 9 is communicated with the outer wall of the motor shell 2;
the first air flow line 9 is used for flowing main working air flow, and the main working air flow flows through the motor shell 2 from the negative pressure area 7;
the motor is a motor of a dust collector, the rotor 3 rotates to drive the movable impeller 6 to rotate, at the moment, the motor area 8 normally operates, namely, the dust collector is in a dust collection state, the motor area 8 normally operates, the dust collector is in a dust collection state, at the moment, main working airflow enters from the bottom cover 5, then flows through the motor shell 2 from the negative pressure area 7 and flows out from the outer side of the motor shell 2, at the moment, the dust collection work of the dust collector is completed, no mechanical contact exists between the motor area 8 and the movable impeller 6, no gap exists between the motor area 8 and the movable impeller 6, the main working airflow is completely used for dust collection of the dust collector, and the main working airflow cannot be shunted to the motor area 8.
The negative pressure area 7 and the other side of the movable impeller 6 form a second air flow pipeline 10 for air circulation;
the port of the second air flow pipeline 10 is communicated with the top cover 4;
a second air flow line 10 runs through the motor area 8, the second air flow line 10 also running through the motor housing 2;
the second air flow pipeline 10 is used for cooling air flow to flow, and the air flow in the cold area sequentially flows through the motor area 8, the motor shell 2 and the negative pressure area 7 from the top cover 4;
the rotor 3 drives the movable impeller 6 to rotate, a negative pressure area 7 is formed at the bottom cover 5, the negative pressure area 7 is used for sucking external cooling airflow, the cooling airflow outside the motor shell 2 can be sucked through the second airflow pipeline 10, the cooling airflow enters the motor main body 1 from the top cover 4 and flows through the motor area 8, then penetrates through the motor shell 2 and finally reaches the negative pressure area 7, at the moment, the cooling and heat dissipation of the motor area 8 are realized by utilizing the negative pressure area 7 formed by the rotation of the movable impeller 6 per se, the cooling and heat dissipation of the motor area 8 do not depend on the air volume in the working state, but the cooling airflow is introduced into the motor area 8 by utilizing the negative pressure generated in the working state of the motor, so that the heat of the motor area 8 and a circuit board is taken away, the noise generated when high-speed airflow impacts irregular stators, frameworks, supports and other parts is reduced, and the higher the negative pressure is the flow rate of, the better the cooling effect, the higher the stability of the motor and PCB board.
When the main working airflow of the first airflow pipeline 9 works normally, because the negative pressure area 8 generated during normal work and the cooling airflow of the second airflow pipeline 10 enter the motor main body 1 from the outside, the effects of normal operation of the motor area 8 and cooling and radiating of the motor area 8 are realized simultaneously, the problem that the motor area 8 may be burnt due to blockage of the main working airflow flowing through the first airflow pipeline 9 when dust absorption of the dust collector reaches a saturated state, namely, under the condition that dust is fully accumulated, can be effectively solved by utilizing the cooling airflow flowing through the second airflow pipeline 10, even if the dust reaches the blockage of the main working airflow in the saturated state, the negative pressure area 7 exists as long as the movable impeller 6 operates, the cooling airflow flows through the second airflow pipeline 10 as long as the negative pressure area 7 exists, the cooling airflow always flows, and the cooling airflow still flows through the second airflow pipeline 10 due to the negative pressure area 7 generated by operation of the movable impeller 6, thereby dispel the heat to motor district 8, avoided the motor effectively to appear burning the possibility because main working air current is stopped up to, utilize operating condition's the active cooling air current that introduces of negative pressure to dispel the heat to motor district 8, noise reduction can be effectively, can stop up the air intake of motor district 8 completely, can guarantee that the motor does not lose its work efficiency, under any circumstance, this motor all can normally reliably operate.
The working principle of the invention is as follows: the rotor 3 rotates to drive the movable impeller 6 to rotate, and at the moment, the movable impeller is in the working state of the motor, so that the dust collector is in the working state to collect dust, and the main working airflow flows through the motor shell 2 from the bottom cover 5 and flows out from the outer wall of the motor shell 2, thereby completing the dust collection function of the dust collector;
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high reliability brushless motor characterized in that: including motor main part (1) and motor housing (2), there is rotor (3) that the axial link up in motor main part (1) inside, motor housing (2) inside is located in motor main part (1), motor housing (2) one end is equipped with top cap (4), the motor housing (2) other end is equipped with bottom (5), be equipped with movable impeller (6) on rotor (3).
2. A high-reliability brushless motor according to claim 1, wherein: the bottom cover (5) is provided with a negative pressure area (7), the negative pressure area (7) is located below the movable impeller (6), a motor area (8) is arranged inside the motor main body (1), and the motor area (8) is located above the movable impeller (6).
3. A high-reliability brushless motor according to claim 2, wherein: the motor area (8) and the movable impeller (6) are not in mechanical contact and have no gap.
4. A high-reliability brushless motor according to claim 2, wherein: the negative pressure area (7) and one side of the movable impeller (6) form a first air flow pipeline (9) for air circulation.
5. The brushless motor of claim 4, wherein: the first air flow pipeline (9) penetrates through the motor shell (2), and the port of the first air flow pipeline (9) is communicated with the outer wall of the motor shell (2).
6. The brushless motor of claim 4, wherein: the first air flow line (9) is used for the flow of a main working air flow which flows through the motor housing (2) from the negative pressure region (7).
7. A high-reliability brushless motor according to claim 2, wherein: the negative pressure area (7) and the other side of the movable impeller (6) form a second air flow pipeline (10) for air circulation.
8. A high-reliability brushless motor according to claim 7, wherein: the port of the second air flow pipeline (10) is communicated with the top cover (4).
9. A high-reliability brushless motor according to claim 7, wherein: the second air flow line (10) runs through the motor region (8), the second air flow line (10) also running through the motor housing (2).
10. A high-reliability brushless motor according to claim 7, wherein: the second air flow pipeline (10) is used for cooling air flow to flow, and the air flow in the cold area sequentially flows through the motor area (8), the motor shell (2) and the negative pressure area (7) from the top cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321920.5A CN112491200A (en) | 2020-11-23 | 2020-11-23 | High-reliability brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321920.5A CN112491200A (en) | 2020-11-23 | 2020-11-23 | High-reliability brushless motor |
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| Publication Number | Publication Date |
|---|---|
| CN112491200A true CN112491200A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011321920.5A Pending CN112491200A (en) | 2020-11-23 | 2020-11-23 | High-reliability brushless motor |
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| Country | Link |
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| CN (1) | CN112491200A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004068723A (en) * | 2002-08-07 | 2004-03-04 | Hitachi Home & Life Solutions Inc | Electric blowers and vacuum cleaners |
| CN110250990A (en) * | 2019-07-15 | 2019-09-20 | 稻津电机(珠海)有限公司 | A high-speed vacuum cleaner motor |
-
2020
- 2020-11-23 CN CN202011321920.5A patent/CN112491200A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004068723A (en) * | 2002-08-07 | 2004-03-04 | Hitachi Home & Life Solutions Inc | Electric blowers and vacuum cleaners |
| CN110250990A (en) * | 2019-07-15 | 2019-09-20 | 稻津电机(珠海)有限公司 | A high-speed vacuum cleaner motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 215000 No. 15, linbu street, Weiting street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant after: Xingdesheng Technology (Suzhou) Co.,Ltd. Address before: 15 linbu street, Weiting street, Suzhou Industrial Park, Jiangsu Province, 215000 Applicant before: SUZHOU INDUSTRIAL PARK SIP CINDERSON MOTOR Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210312 |
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| RJ01 | Rejection of invention patent application after publication |