CN2313325Y - DC. motor - Google Patents
DC. motor Download PDFInfo
- Publication number
- CN2313325Y CN2313325Y CN 97220415 CN97220415U CN2313325Y CN 2313325 Y CN2313325 Y CN 2313325Y CN 97220415 CN97220415 CN 97220415 CN 97220415 U CN97220415 U CN 97220415U CN 2313325 Y CN2313325 Y CN 2313325Y
- Authority
- CN
- China
- Prior art keywords
- motor
- heat pipe
- heat
- section
- pipe axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an improved DC motor. The utility model is characterized in that a solid shaft of a motor is changed to a hollow heat pipe shaft, the hollow heat pipe shaft is divided into two segments of a heat absorbing segment and a heat releasing segment, an inner cavity of the heat absorbing segment is cylindrical, an inner cavity of the heat releasing segment is an internal cone shape, two cavities are communicated, and both ends are sealed. Under high vacuum state, inner pouring high purity water is used as working substance, the heat absorbing segment is provided with heat generation components of a rotor, etc., which is placed in a machine shell, and the heat releasing segment is provided with a centrifugal fan wheel protruding the machine shell, which is placed in a fan housing which is provided with a cold air inlet and a hot air outlet. The hollow heat pipe shaft can expel the heat quantity in the motor effectively, the motor is in the state of varying load, speed regulation and fully-closed situation, the motor has lower temperature rising, and the utility model has the advantage of long service life.
Description
The utility model relates to a kind of DC motor.
Heat generating components such as the rotor of existing DC motor, stator, commutator are enclosed in the casing, and its heat of producing of being in operation can only pass through air gap, stator and casing multilayer and conduct to casing outer surface and dissipated in the forced-convection heat transfer mode by radiator fan.When motor during in speed governing, varying load operation, radiating effect is poor, and as the ambient temperature height, electric machine temperature rise is faster, directly influences the operating mode and the life-span of motor.
The purpose of this utility model will provide a kind of heat-sinking capability strong exactly, can obviously improve operating mode, the DC motor that increases the service life.
Form by casing, motor shaft, rotor, stator, commutator, brush assembly and radiator fan for finishing the DC motor that the invention task designs, motor shaft is hollow heat pipe axle, hollow heat pipe axle is divided into two sections of endotherm section and heat release section, the endotherm section internal cavity is cylindrical, the heat release section internal cavity is an inner conical, two sections cavitys link to each other, and the chamber is sealed at both ends, is marked with the high purity water that distills more than secondary under high vacuum state; The rotor core of DC motor and winding are sleeved on the endotherm section of hollow heat pipe axle, be installed in the casing with stator core and winding, commutator, brush assembly, the heat release section of hollow heat pipe axle is stretched in outside the casing, the centrifugal fan wheel is installed on it is placed in the fan guard.
For guaranteeing to form good phase-change heat transfer cyclic process in the horizontal hollow heat pipe axle cavity, hollow heat pipe axle heat release section cavity inner wall tapering is the 0.5-1 degree, and cavity inner wall has copper plate.
Be enhance heat, the blade of the centrifugal fan wheel that is loaded on hollow heat pipe axle heat release section is made up of for two sections straight blade and helical blade, the straight blade section is parallel to motor axis, the initial helical angle of helical blade section is 45 °, and the axial end portion of the fan guard outside centrifugal fan wheel establishes the cold wind air inlet, establishes the hot blast air outlet above the radial circumference at it.
The utility model DC motor has replaced the solid motor axle of existing DC motor with the hollow heat pipe axle with high-efficiency heat conduction characteristic, the heat of motor interior is directly transferred on the centrifugal fan wheel of motor outside, realize the motor interior rotor with cold air pair and the motor forced air convection heat exchange of the fan wheel of rotation synchronously, stator, the direct heat radiation cooling of commutator etc., thereby can under the situation of the motor interior parts being carried out totally-enclosed protection, reduce motor temperature, make speed governing, the motor that varying load moves down is in totally-enclosed protection against the tide, prevent to increase the service life under the high situation of dust and ambient temperature.
Embodiment describes the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model embodiment schematic diagram.
Fig. 2 is a centrifugal fan wheel schematic diagram of the present utility model.
Fig. 3 is a fan guard schematic diagram of the present utility model.
As shown in Figure 1, the utility model forced-air circulation heat pipe is made up of casing 2, hollow heat pipe axle 1, rotor 3, stator 4, commutator 6, brush assembly 5, centrifugal fan wheel 7 and fan guard 8 from cooling off high temperature resistant DC motor.Hollow heat pipe axle 1 is divided into 11 two sections of endotherm section 14 and heat release section.Endotherm section 14 internal cavities are cylindrical, heat release section 11 internal cavities are inner conical, its inwall tapering is the 0.5-1 degree, cavity 13 inwalls have copper plate 12, cavity 13 is sealed at both ends, under high vacuum state, be marked with the high purity water that more than secondary, distills, the iron core of rotor 3 and winding are sleeved on the endotherm section 14 of hollow heat pipe axle 1, be loaded in the casing 2 with the iron core of stator 4 and winding, commutator 6, brush assembly 5, the heat release section 11 of hollow heat pipe axle 1 is stretched in outside the casing 2, centrifugal fan wheel 7 is installed on it is placed in the fan guard 8.During motor work, the heat transferred that the iron core of rotor 3 and winding and commutator 6 produce is to endotherm section 14 inside of hollow heat pipe axle 1, working medium in the axle internal cavity is vaporized, the working medium of vaporization in the heat release section 11 of hollow heat pipe axle 1, is transmitted to heat transferred then outside the axle with on the close-fitting centrifugal fan wheel 7 of axle and drains.Be condensed into liquid working medium under action of centrifugal force after the release heat in the heat release section 11 of hollow heat pipe axle 1, be back in endotherm section 14 cavitys, form the phase-change heat transfer cyclic process along oblique inwall.The centrifugal fan wheel 7 that surface temperature is higher than ambient air temperature sucks cold air through the cold wind air inlet 10 of fan guard 8 axial end portions, absorb the hot blast that centrifugal fan is taken turns 7 heats through discharging from the radially hot blast air outlet 9 of fan guard 8 after the forced-convection heat transfer, finished extraneous air forced-convection heat transfer cyclic process.
As shown in Figure 2, the blade of centrifugal fan wheel 7 is made up of for 15 two sections straight blade 16 and helical blade, and straight blade 16 is parallel to motor axis, and the initial pitch angle alpha will of helical blade 15 is 45 °.
As shown in Figure 3, the axial end of the fan guard 8 outside the centrifugal fan wheel 7 has cold wind air inlet 10, on its circular radial side face hot blast air outlet 9 is arranged.
Claims (3)
1, a kind of DC motor, by casing, motor shaft, rotor, stator, commutator, brush assembly and radiator fan are formed, it is characterized in that said motor shaft is hollow heat pipe axle, hollow heat pipe axle is divided into two sections of endotherm section and heat release section, the endotherm section internal cavity is cylindrical, the heat release section internal cavity is an inner conical, two sections cavitys link to each other, the chamber is sealed at both ends, the rotor core of DC motor and winding are sleeved on the endotherm section of hollow heat pipe axle, with stator core and winding, commutator, brush assembly is installed in the casing, and the heat release section of hollow heat pipe axle is stretched in outside the casing, the centrifugal fan wheel is installed on it is placed in the fan guard.
2, DC motor according to claim 1 is characterized in that said hollow heat pipe axle heat release section cavity inner wall tapering is the 0.5-1 degree, and cavity inner wall has copper plate.
3, DC motor according to claim 1 and 2, the blade that it is characterized in that the said centrifugal fan wheel that is loaded on hollow heat pipe axle heat release section is made up of for two sections straight blade and helical blade, the straight blade section is parallel to motor axis, the initial helical angle of helical blade section is 45 °, the axial end portion of the fan guard that said centrifugal fan wheel is outer has the cold wind air inlet, on its circular radial side face the hot blast air outlet is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220415 CN2313325Y (en) | 1997-07-04 | 1997-07-04 | DC. motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220415 CN2313325Y (en) | 1997-07-04 | 1997-07-04 | DC. motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2313325Y true CN2313325Y (en) | 1999-04-07 |
Family
ID=33936100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97220415 Expired - Fee Related CN2313325Y (en) | 1997-07-04 | 1997-07-04 | DC. motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2313325Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018470B (en) * | 2007-03-09 | 2012-09-05 | 东莞嘉丰机电设备有限公司 | Axial bidirectional heat conduction high-power heat exchanger with the thermal pipe |
| CN107968528A (en) * | 2017-12-28 | 2018-04-27 | 无锡道尔奇拜恩电机有限公司 | A kind of high-voltage generator rectification module mounting structure |
-
1997
- 1997-07-04 CN CN 97220415 patent/CN2313325Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018470B (en) * | 2007-03-09 | 2012-09-05 | 东莞嘉丰机电设备有限公司 | Axial bidirectional heat conduction high-power heat exchanger with the thermal pipe |
| CN107968528A (en) * | 2017-12-28 | 2018-04-27 | 无锡道尔奇拜恩电机有限公司 | A kind of high-voltage generator rectification module mounting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |