CN201499074U - Brushless DC fan motor used for frost-free refrigerator - Google Patents
Brushless DC fan motor used for frost-free refrigerator Download PDFInfo
- Publication number
- CN201499074U CN201499074U CN2009203062574U CN200920306257U CN201499074U CN 201499074 U CN201499074 U CN 201499074U CN 2009203062574 U CN2009203062574 U CN 2009203062574U CN 200920306257 U CN200920306257 U CN 200920306257U CN 201499074 U CN201499074 U CN 201499074U
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- brushless
- frost
- motor
- bearing
- free refrigerator
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Abstract
The utility model relates to an electromechanical integrated product, in particular to a fan motor of a brushless DC motor, which aims to provide a brushless DC fan motor with integrated structure, efficient performance and reliable operation used for a frost-free refrigerator. The brushless DC fan motor used for a frost-free refrigerator comprises a rear end cover, a front end cover and a stator module and a rotor module which are sealed by closing the two end covers, wherein a power control module is arranged in the motor and is fixedly sealed with sealant.
Description
Technical field
The utility model relates to a kind of electromechanical integrated product, particularly the fan motor of brshless DC motor.
Background technology
In existing technology utilization, the fan motor that adopts in the frost-free refrigerator mostly is motor with cup rotor.Because the particular feature of this kind motor has inevitably caused bigger excitation loss, has influenced efficiency of motor and performance greatly, and the structure relative complex of motor with cup rotor, so its operational reliability is relatively poor, and service life is shorter relatively.Though also there is fraction to adopt the fan of brushless electric machine, but the energy supply control module of this kind design motor all is external state, simultaneously for stator is carried out excitation on time, also need on motor body, increase Hall element, improve the complexity of product punching design and assembly structure so again greatly.
The utility model content
The purpose of this utility model provides the brushless DC fan that is used for frost-free refrigerator that a kind of structure is integrated, performance is efficient, reliable.
The utility model adopts following technical scheme to achieve these goals:
A kind of brushless DC fan that is used for frost-free refrigerator comprises rear end cap, front end housing and is covered by two ends and closes stator module and the rotor assembly that seals, and is built-in with energy supply control module among the Ben Mada, and is sealed admittedly by fluid sealant.
Above-mentioned rotor assembly comprises middle permanent magnet, the rotating shaft of fixedlying connected with permanent magnet and is used for the bearing of supporting revolving shaft and above-mentioned bearing employing ball bearing.
Above-mentioned bearing both sides are provided with the oleaginous base that can form the bearing arrangement self-lubricating.
This is novel to be dc brushless motor, and rotor adopts permanent magnet, and simple in structure, excitation loss is little; By optimal design, the bearing chamber of product and shell are integrated into one, behind the capable bearing of bearing chamber assembling goal, leave rational space in the outside, be used to store oleaginous base, soak into the oil-containing ball bearing by oleaginous base, and then lubricated rotating shaft rotation, constitute stable lubricating system; The built-in power control module has the ability of judging the electric position of rotor, thereby the motor space has been saved in the installation of saving Hall element.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is this novel cross-sectional view.
Fig. 3 is the connection diagram between energy supply control module and the motor.
Embodiment
See Fig. 1 and Fig. 2, this novel rear end cap 1, front end housing 2 and stator module 4, rotor assembly 3, rotor assembly 3 comprises rotating shaft 32 and the bearing 33 that permanent magnet 31 is fixedlyed connected with permanent magnet, above-mentioned bearing is a ball bearing, is used for the supporting revolving shaft rotation.This novel energy supply control module 5 that also is built-in with, energy supply control module is positioned at the forward end cap of motor inner chamber position, is provided with fluid sealant 6 solid envelopes on every side, and energy supply control module is connected with stator module, is used for stator module is carried out orderly excitation operation.Leave suitable space in the both sides of ball bearing, be provided with oleaginous base 7, these oleaginous bases soak into ball bearing, and then lubricated rotating shaft rotation, formed a stable lubricating system, through reliability testing, this lubricating system can be stablized the performance lubrication 10～15 years, also promptly all need not be lubricated again operation, the work of also just having saved the dismounting parts in so long to this novel motor.
See Fig. 3, energy supply control module is connected with motor, three-phase current is provided for the stator module of motor, and can receives the feedback signal from stator module.The BLDC special driving chip that the core component of energy supply control module adopts PHILIPS Co. to make.This chip has following characteristics: 1, being its output pulse step makes stabilizing output level by the control of built-in chip type phase-locked loop circuit, and accurately, its truth table is as follows
| STATE | MOT1 (1) | MOT2 (1) | MOT3 (1) |
| 1 | Z | L | H |
| 2 | H | L | Z |
| 3 | H | Z | L |
| 4 | Z | H | L |
| 5 | L | H | Z |
| 6 | L | Z | H |
Wherein H represents high level, and L represents low level, and Z represents high-impedance state; 2, it has the ability of judging the electric position of rotor, and based on the voltage negative feedback principle, the scope of the instantaneous electrical degree of the rotor that draws position meets design requirement; 3, its ability that has self-shield and turn-off certainly, its typical external circuits is simple, and desired external dc power is of low quality, has very strong universal.
Consider the These characteristics of energy supply control module during the design of this novel motor, adopted stator nine utmost point three-phases, the overall design approach of rotor ten utmost points.And in order to satisfy the specific (special) requirements of low voltage starting (3V), to the number of turn of stator, the table magnetic intensity of rotor, the magnetic energy product parameter has been done a large amount of emulation, shows magnetic intensity the most at last and fixes about 1500Gs, and the parameter of the number of turn and phase resistance has also obtained optimization.When make starting at last, the degenerative value of voltage has satisfied the requirement of control chip to feedback signal at a good threshold values, has improved performance index, and the folded height of whole motor has only 5mm, thereby has realized incorporate designing requirement.Removed conventional similar BLDC product needed hall device from and located rotor electrical degree problem, thereby made product structurally smaller and more exquisite, reliability is more stable.
Claims (3)
1. brushless DC fan that is used for frost-free refrigerator, comprise rear end cap (1), front end housing (2) and cover and close stator module (4) and the rotor assembly (3) that seals by two ends, it is characterized in that: be built-in with energy supply control module (5) among the Ben Mada, and by the solid envelope of fluid sealant (6).
2. the brushless DC fan that is used for frost-free refrigerator according to claim 1, it is characterized in that: permanent magnet (31), rotating shaft (32) of fixedlying connected in the middle of above-mentioned rotor assembly (3) comprises and the bearing (33) that is used for supporting revolving shaft with permanent magnet, and above-mentioned bearing (33) adopts ball bearing.
3. the brushless DC fan that is used for frost-free refrigerator according to claim 2 is characterized in that: above-mentioned bearing both sides are provided with the oleaginous base (7) that can form the bearing arrangement self-lubricating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203062574U CN201499074U (en) | 2009-07-15 | 2009-07-15 | Brushless DC fan motor used for frost-free refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203062574U CN201499074U (en) | 2009-07-15 | 2009-07-15 | Brushless DC fan motor used for frost-free refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201499074U true CN201499074U (en) | 2010-06-02 |
Family
ID=42442270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203062574U Expired - Fee Related CN201499074U (en) | 2009-07-15 | 2009-07-15 | Brushless DC fan motor used for frost-free refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201499074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3355007A1 (en) * | 2017-01-27 | 2018-08-01 | Eppendorf AG | Cooling device fan and ultra low temperature cooling device |
-
2009
- 2009-07-15 CN CN2009203062574U patent/CN201499074U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3355007A1 (en) * | 2017-01-27 | 2018-08-01 | Eppendorf AG | Cooling device fan and ultra low temperature cooling device |
| WO2018137858A1 (en) * | 2017-01-27 | 2018-08-02 | Eppendorf Ag | Refrigerator fan device and ultra-low temperature freezer |
| US11346593B2 (en) | 2017-01-27 | 2022-05-31 | Eppendorf Ag | Refrigerator fan device and ultra-low temperature freezer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20140715 |
|
| EXPY | Termination of patent right or utility model |