CN211090386U - Motor controller - Google Patents
Motor controller Download PDFInfo
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- CN211090386U CN211090386U CN201921846702.6U CN201921846702U CN211090386U CN 211090386 U CN211090386 U CN 211090386U CN 201921846702 U CN201921846702 U CN 201921846702U CN 211090386 U CN211090386 U CN 211090386U
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Abstract
The utility model provides a motor controller, which comprises a shell and a fan positioned in the shell, wherein a first airflow channel and a second airflow channel are arranged in the shell, the first airflow channel comprises a first air inlet and a first air outlet, the second airflow channel comprises a second air inlet and a second air outlet, and the second air inlet is positioned on the side wall between the first air inlet and the first air outlet of the first airflow channel; the fan is located in the first air flow passage, sucks external air into the shell, and forms cooling air flows flowing in the first air flow passage and the second air flow passage in a preset direction. The heat dissipation of different devices is realized through the first air flow channel and the second air flow channel which share one fan, and the devices can be prevented from being overlapped in a single direction, so that the cost is reduced on the premise of not increasing the size of the motor controller.
Description
Technical Field
The embodiment of the utility model provides a relate to power electronic equipment field, more specifically say, relate to a motor controller.
Background
The capacitor (direct current bus capacitance) is one of the heating components in the motor controller, and in order to ensure the motor controller to work stably, the heat generated by the capacitor during working needs to be distributed in time, so that the over-high temperature of the capacitor is avoided.
In the existing motor controller, it is common to place the capacitor in front of a heat sink that dissipates heat to the power module, and to provide a fan at the rear of the heat sink to dissipate heat to the capacitor. However, in the above structure, since the capacitor, the heat sink, and the fan are stacked in the longitudinal length direction, and at the same time, it is necessary to secure the gap between the devices, the longitudinal length of the motor controller is significantly increased.
In order to overcome the defects, the capacitor and the radiator can be arranged side by side, and a separate fan and an air duct are arranged for the capacitor to dissipate heat. However, this structure requires an additional independent fan, which increases the cost. In the structure, the plurality of capacitors are arranged in the independent air duct in a front-back manner, which causes the temperature accumulation of the capacitors arranged at the rear end to be serious, namely, the temperature consistency of each capacitor is poor, thereby affecting the overall service life of the motor controller (the overall service life of the motor controller is limited by the service life of the capacitor with the highest temperature).
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a lead to longitudinal length great when adopting condenser, radiator and fan vertically to fold the structure to above-mentioned machine controller, the cost is higher when setting up independent wind channel for the condenser, and the relatively poor problem of each condenser temperature uniformity provides a new machine controller.
An embodiment of the present invention provides a motor controller, including a housing and a fan located in the housing, wherein the housing has a first airflow channel and a second airflow channel, the first airflow channel includes a first air inlet and a first air outlet, the second airflow channel includes a second air inlet and a second air outlet, and the second air inlet is located on a side wall between the first air inlet and the first air outlet of the first airflow channel;
the fan is located in the first air flow passage, sucks external air into the shell, and forms cooling air flows flowing in the first air flow passage and the second air flow passage in a preset direction.
Preferably, a third airflow channel located between the second air inlet and the third air outlet is further provided in the housing, and the third air outlet and the second air outlet are respectively located at two sides of the second air inlet.
Preferably, the second airflow channel is communicated with the third airflow channel, and the centers of the second airflow channel and the third airflow channel are positioned on the same straight line; the straight line of the centers of the second airflow channel and the third airflow channel is parallel to the straight line of the centers of the first airflow channels.
Preferably, the first air outlet and the second air outlet are located on the same side, the first air inlet and the third air outlet are located on the same side, and the first air inlet and the third air outlet are located on the side wall of the housing.
Preferably, the first air flow channel is adjacent to the second air flow channel and the third air flow channel and is separated by a partition plate, and the second air inlet is located on the partition plate.
Preferably, the motor controller includes a capacitor bank and a heat sink for dissipating heat for the power module, and the heat sink is located in the first airflow channel, and the capacitor bank includes a plurality of capacitors respectively located in the second airflow channel and the third airflow channel.
Preferably, the second air inlet is located on a side wall between the fan and the heat sink of the first air flow passage.
Preferably, the number of capacitors located in the second airflow path is greater than the number of capacitors located in the third airflow path.
Preferably, a compression air duct member is arranged at a capacitor position adjacent to the second air outlet in the second air flow channel, and the area of the cross section of the second air flow channel is reduced through the compression air duct member.
Preferably, capacitor fixing plates are arranged in the second airflow channel and the third airflow channel, and bottom walls of the second airflow channel and the third airflow channel are formed by the capacitor fixing plates; the capacitors respectively penetrate through the capacitor fixing plate to enter the second airflow channel or the third airflow channel, and a sinking structure taking the capacitors as centers is arranged on the capacitor fixing plate.
Preferably, the motor controller comprises a printed circuit board, the capacitor bank and the heat sink being located on the same surface of the printed circuit board; and the printed circuit board constitutes a bottom wall of the first air flow passage.
The motor controller of the embodiment has the following beneficial effects: the first airflow channel and the second airflow channel of one fan are shared to realize heat dissipation of different devices, so that the devices can be prevented from being stacked in a single direction, and the cost is reduced on the premise of not increasing the size of the motor controller. And, the embodiment of the utility model provides a still through setting up third airflow channel and compression capacitor wind channel cross-section, improve the uniformity of the temperature of each condenser in the capacitor bank to extension machine controller's life.
Drawings
Fig. 1 is a schematic diagram of a motor controller according to an embodiment of the present invention with a housing removed;
fig. 2 is a schematic view of a compressed air duct member in a motor controller according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a capacitor fixing plate in a motor controller according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, which is a schematic diagram of a motor controller provided by an embodiment of the present invention after a housing is removed, the motor controller may be configured to output a driving voltage to a motor to drive the motor to operate, for example, the motor controller may be a frequency converter, a servo driver, or the like. The motor controller of the present embodiment includes a housing and a fan 14 for dissipating heat, and the fan 14 is installed in the housing. The housing has a first air flow channel 11 and a second air flow channel 12 therein, and the first air flow channel 11 and the second air flow channel 12 may be enclosed by the housing, a partition plate and a structural member (e.g., a mounting frame, a printed circuit board 10, etc.) located in the housing. The first airflow channel 11 includes a first air inlet and a first air outlet, the second airflow channel 12 includes a second air inlet 121 and a second air outlet, and the second air inlet 121 is located on a side wall of the first airflow channel 11 between the first air inlet and the first air outlet.
The fan 14 is located in the first airflow channel 11, the fan 14 may specifically be an axial flow fan, and the fan 14 sucks external air into the housing, and forms a cooling airflow flowing in a predetermined direction (i.e. from the first air inlet to the first air outlet, and from the second air inlet to the second air outlet) in the first airflow channel 11 and the second airflow channel 12, so as to cool devices (e.g. a heat sink disposed in the first airflow channel 11, a capacitor bank disposed in the second airflow channel 12) in the first airflow channel 11 and the second airflow channel 12, thereby improving heat dissipation efficiency of the devices.
The motor controller realizes heat dissipation of different devices by sharing the first airflow channel 11 and the second airflow channel 12 of the fan 14, and can avoid unidirectional overlapping of the devices, thereby reducing the cost on the premise of not increasing the size of the motor controller. And through setting up first air current passageway 11 and second air current passageway 12 independent each other, can dispel the heat respectively to the device that has different heat-resisting temperature, not only can guarantee the heat dissipation requirement of different devices, can practice thrift the energy consumption moreover.
In another embodiment of the present invention, a third airflow channel 13 is further disposed in the housing between the second air inlet 121 and the third air outlet 131, and the third air outlet 131 and the second air outlet are respectively disposed at two sides of the second air inlet 121. That is, the air sucked by the fan 14 is divided into two streams, one stream is discharged from the first air outlet after flowing through the first air flow channel 11, and the other stream flows into the second air inlet 121; the cooling airflow flowing in from the second air inlet 121 is divided into two flows, and the two flows flow to the two sides of the second air inlet 121, enter the second airflow channel 12 and the third airflow channel 13, and flow out from the second air outlet and the third air outlet 131.
Specifically, the second airflow channel 12 and the third airflow channel 13 may be communicated, and centers of the second airflow channel 12 and the third airflow channel 13 are located on the same straight line, that is, the second airflow channel 12 and the third airflow channel 13 may be a through cavity, and the second air inlet 121 is located on a side wall of the through cavity. Moreover, the straight line of the centers of the second airflow channel 12 and the third airflow channel 13 is parallel to the straight line of the center of the first airflow channel 11, that is, the cavity of the second airflow channel 12 and the third airflow channel 13 is arranged side by side with the cavity of the first airflow channel 11. Through the above manner, the circulation resistance of the cooling airflow in the first airflow channel 11, the second airflow channel 12 and the third airflow channel 13 can be reduced, the turbulent flow is reduced, the flow speed of the cooling airflow is accelerated, and the heat dissipation efficiency is improved.
In particular, the first outlet of the first air flow channel 11 and the second outlet of the second air flow channel 12 are located on the same side, the first inlet of the first air flow channel 11 and the third outlet 131 of the third air flow channel 13 are located on the same side, and the first inlet and the third outlet 131 may be located on a side wall of the housing. The first air outlet and the second air outlet can be communicated with a converging cavity in the housing (the converging cavity is communicated with the outside of the housing), that is, the cooling air flows flowing out of the first air flow channel 11 and the second air flow channel 12 are converged and then discharged to the outside of the housing. Through the mode, the arrangement of the air inlet and the air outlet on the shell can be simplified.
The first air flow channel 11 may be disposed adjacent to the second air flow channel 12 and the third air flow channel 13, and separated by a partition plate on which the second air inlet 121 is located. The above structure can reduce the space occupied by the first air flow path 11, the second air flow path 12, and the third air flow path 13, and facilitate the distribution of the devices in the housing.
Specifically, the second air inlet 121 is located on a side wall between the first air inlet of the first air flow path 11 and the heat sink 15. That is, the cooling airflow generated by the fan 14 is divided into two parts, one part is used for dissipating heat of the heat sink 15, and the other part flows into the second airflow channel 12 and the third airflow channel 13 through the second air inlet 121, so as to avoid the waste heat of the heat sink 15 from affecting the devices in the second airflow channel 12 and the third airflow channel 13.
The motor controller includes a capacitor bank and a heat sink 15 for dissipating heat of the power module (the power module is disposed on the printed circuit board 10), and the heat sink 15 is located in the first air flow channel 11, and the capacitor bank includes a plurality of capacitors (for example, four capacitors as shown in fig. 1, and in practical applications, the number of capacitors in the capacitor bank may be different) respectively located in the second air flow channel 12 and the third air flow channel 13. The heat sink 15 (i.e., the power module) and the capacitor bank have different temperature requirements, and by placing them in different air flow channels, the respective heat dissipation requirements can be satisfied, and at the same time, the energy consumption can be reduced to the maximum.
The capacitor bank and heat sink 15 described above may be soldered to the printed circuit board 10 (the printed circuit board 10 is mounted in the housing) with the capacitor bank and heat sink 15 on the same surface of the printed circuit board 10. The bottom wall of the first air flow path 11 may be constituted by the printed circuit board 10. In addition, the fan 14 may be fixed to the printed circuit board 10.
Specifically, the capacitors (for example, the first capacitor 161, the second capacitor 162, the third capacitor 163, and the fourth capacitor 164 from bottom to top in fig. 1) in the capacitor bank are aligned in the longitudinal direction (i.e., along the cavity where the second airflow channel 12 and the third airflow channel 13 are located), and are arranged side by side with the heat sink 15 in the first airflow channel 11. Of course, in practical applications, the plurality of capacitors in the capacitor bank may be arranged in two or more rows without affecting the overall size of the motor controller.
Since the heat sink 15 occupies a certain longitudinal length, the distance between the second air inlet 121 and the second air outlet is greater than the distance between the second air inlet 121 and the third air outlet, and accordingly, the number of capacitors located in the second air flow path 12 can be made greater than the number of capacitors located in the third air flow path 13. For example, the first capacitor 161 is located in the third air flow channel 13, the second capacitor 162, the third capacitor 163 and the fourth capacitor 164 are located in the second air flow channel 12, and the second capacitor 162 and the first capacitor 161 are respectively located at two sides of the second air inlet 121 and are spaced apart by a suitable distance. After the cooling airflow generated by the fan 14 flows into the second air inlet 121, a portion of the cooling airflow flows to the first capacitor 161 and is discharged from the third air outlet 131, and another portion of the cooling airflow flows to the second capacitor 162, so that the influence of the waste heat generated by the first capacitor 161 on other capacitors is avoided.
Also, in order to avoid heat accumulation at the last capacitor in the second airflow passage 12, i.e., the fourth capacitor 164, a compression air duct member 17 may be provided at a capacitor (the fourth capacitor 164 in this embodiment) adjacent to the second air outlet. Referring to fig. 2, the compression duct member 17 includes two side plates 171 and 172 and a top plate 173, and the fourth capacitor 164 is located in a region surrounded by the side plates 171 and 172 and the top plate 173, so that the area of the cross section of the second airflow passage is reduced at this location, the flow velocity of the cooling airflow passing therethrough is increased, the surface heat exchange coefficient of the fourth capacitor 164 is increased, and the heat dissipation efficiency of the fourth capacitor 164 is greatly improved.
In addition, as shown in fig. 3, in order to improve the stability of each capacitor in the capacitor bank, a capacitor fixing plate 18 may be disposed in the second air flow channel 12 and the third air flow channel 13, and the capacitor fixing plate 18 may form a bottom wall of the second air flow channel 12 and the third air flow channel 13. The capacitor fixing plate 18 has a plurality of openings, a plurality of capacitors respectively pass through the openings of the capacitor fixing plate 18 and enter the second airflow channel 12 or the third airflow channel 13, and a sink 181 centered on the capacitors is disposed on the capacitor fixing plate 18, so that the air passing area of the capacitors (i.e., the contact area of the capacitors with the cooling airflow) can be locally increased.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A motor controller comprises a shell and a fan positioned in the shell, and is characterized in that a first air flow channel and a second air flow channel are arranged in the shell, the first air flow channel comprises a first air inlet and a first air outlet, the second air flow channel comprises a second air inlet and a second air outlet, and the second air inlet is positioned on the side wall between the first air inlet and the first air outlet of the first air flow channel;
the fan is located in the first air flow passage, sucks external air into the shell, and forms cooling air flows flowing in the first air flow passage and the second air flow passage in a preset direction.
2. The motor controller of claim 1, further comprising a third airflow channel within the housing between the second air inlet and the third air outlet, wherein the third air outlet and the second air outlet are respectively located on two sides of the second air inlet.
3. The motor controller according to claim 2, wherein the second air flow passage and the third air flow passage are communicated with each other, and centers of the second air flow passage and the third air flow passage are located on the same straight line; the straight line of the centers of the second airflow channel and the third airflow channel is parallel to the straight line of the centers of the first airflow channels.
4. The motor controller of claim 3, wherein the first air outlet and the second air outlet are located on a same side, the first air inlet and the third air outlet are located on a same side, and the first air inlet and the third air outlet are located on a side wall of the housing.
5. The motor controller of claim 3 wherein said first air flow channel is disposed adjacent to and separated from said second and third air flow channels by a partition, said second air inlet being located in said partition.
6. A motor controller according to any of claims 2-5, characterised in that the motor controller comprises a capacitor bank and a heat sink for dissipating heat for the power module, and that the heat sink is located in the first air flow channel, the capacitor bank comprising a plurality of capacitors located in the second and third air flow channels, respectively.
7. The motor controller according to claim 6, wherein the second air inlet is located on a side wall of the first air flow passage between the fan and the heat sink.
8. The motor controller of claim 6 wherein the number of capacitors located in said second airflow path is greater than the number of capacitors located in said third airflow path.
9. The motor controller according to claim 8, wherein a compression air duct member is provided in the second air flow passage at a capacitor adjacent to the second air outlet, and an area of a cross section of the second air flow passage is reduced by the compression air duct member.
10. The motor controller according to claim 6, wherein a capacitor fixing plate is arranged in the second air flow channel and the third air flow channel, and the bottom wall of the second air flow channel and the bottom wall of the third air flow channel are formed by the capacitor fixing plate; the capacitors respectively penetrate through the capacitor fixing plate to enter the second airflow channel or the third airflow channel, and a sinking groove which takes the capacitors as the center is formed in the capacitor fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921846702.6U CN211090386U (en) | 2019-10-30 | 2019-10-30 | Motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921846702.6U CN211090386U (en) | 2019-10-30 | 2019-10-30 | Motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211090386U true CN211090386U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921846702.6U Active CN211090386U (en) | 2019-10-30 | 2019-10-30 | Motor controller |
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| CN (1) | CN211090386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114475224A (en) * | 2021-12-31 | 2022-05-13 | 优跑汽车技术(上海)有限公司 | Cooling fan module and chassis structure |
-
2019
- 2019-10-30 CN CN201921846702.6U patent/CN211090386U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114475224A (en) * | 2021-12-31 | 2022-05-13 | 优跑汽车技术(上海)有限公司 | Cooling fan module and chassis structure |
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