CN215934608U - Special-shaped knapsack cooler of compact variable-frequency speed-regulating motor - Google Patents
Special-shaped knapsack cooler of compact variable-frequency speed-regulating motor Download PDFInfo
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- CN215934608U CN215934608U CN202122054881.3U CN202122054881U CN215934608U CN 215934608 U CN215934608 U CN 215934608U CN 202122054881 U CN202122054881 U CN 202122054881U CN 215934608 U CN215934608 U CN 215934608U
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Abstract
A special-shaped knapsack cooler of a compact variable-frequency speed regulating motor is arranged on the upper part of the compact variable-frequency motor. The utility model comprises two air inlet pipelines which are also used for supporting a backpack foundation, two air outlet pipelines which are also used for supporting the backpack foundation, a circulating electric fan, a backpack cooling cavity, an air-water heat exchanger and a cavity special-shaped part, wherein air inlet and outlet pipes which are also used for supporting the backpack foundation are correspondingly connected with four observation holes of a detachable cover plate above a motor, and the connecting edges of the air inlet and outlet pipes are connected and installed with screw holes left by the original detachable cover plate around the observation holes in a matched manner by screws; the circulating electric small fan is arranged at the air inlet end of the cooling cavity. The utility model improves the heat dissipation of the motor, can effectively reduce the temperature of the motor winding and prolong the service life of the motor.
Description
Technical Field
The utility model belongs to the technical field of motors, and relates to a backpack cooler for improving the cooling effect of a compact variable frequency speed regulation motor.
Background
The compact variable frequency speed regulating motor is an important transmission device in the metallurgical pressure processing technological process. Depending on the different press working processes and requirements, the motor is usually steplessly regulated in the range from zero to the maximum rotational speed. The heat dissipation cooling mode of the compact variable-frequency speed-regulating motor is usually IC416, that is, internal self-circulation and external forced air cooling are performed, the internal self-circulation uses an internal fan on a rotor shaft of the self-circulation to drive the internal air of the motor to flow from a motor load end cooling cavity, a motor air gap (hot air), a non-load end cooling cavity (where a rotor fan is arranged), four internal air channels of the motor (heat exchange between the hot air and an external heat dissipation rib), a motor load end cooling cavity (cooled air), and the process is repeated. The external forced air cooling uses a forced external air cooling fan arranged at the non-load end of the motor as power to drive external air to flow from the non-load end through the external heat dissipation ribs (heat exchange with the internal air duct) of the motor. The internal circulation and the external circulation are combined to achieve the purpose of heat dissipation. When the process requires that the motor runs at a low rotating speed below the base speed for a long period, the rotating speed of the inner fan fixed on the rotor shaft is synchronously reduced, the internal circulation capacity of the motor is reduced, hot air in the motor cannot exchange heat with external heat dissipation ribs well, the temperature rise of a motor winding and a bearing is increased, the service life of the motor is influenced, and the motor burning accident is easily caused. Therefore, in order to reduce the temperature rise of the winding and the bearing of the compact variable-frequency speed-regulating motor under the long-term operation condition below the basic speed, the problem to be solved in the technical field of the motor at present is urgently solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a special-shaped backpack cooler which can be arranged on the upper part of a compact variable-frequency speed-regulating motor so as to improve the heat dissipation of the motor, effectively reduce the temperature of a winding of the motor and prolong the service life of the motor.
The utility model is realized by the following technical scheme:
the special-shaped backpack cooler of the compact variable-frequency speed-regulating motor comprises two air inlet pipes, two air outlet pipes, two cavity special-shaped parts, a circulating electric fan, a backpack cooling cavity and an air-water heat exchanger, wherein the two air inlet pipes, the two air outlet pipes and the backpack base are used for supporting a backpack foundation; the circulating electric small fan is arranged at the air inlet end of the cooling cavity.
The circulating electric small fan and the inner fan of the motor rotor introduce hot air in a motor air gap into the special-shaped backpack cooler through the two observation holes at the non-load end of the motor, the air cooled by the heat exchanger in the cooler passes through the two observation holes at the load end of the motor again, enters the cooling cavity at the load end of the motor and takes away heat through the air gap to reach the cooling cavity at the non-load end of the motor, and therefore the aim of further improving the heat dissipation of the motor is achieved through the circulation.
The utility model has the beneficial effects that: under the condition that the original IC416 cooling mode is basically not changed, the special-shaped backpack cooler is additionally arranged on the upper portion of the motor, the heat inside the motor is circulated to the heat exchanger of the backpack cooler by the aid of the circulating electric fan in the cooler to dissipate heat, and due to the fact that the rotating speed of the circulating electric fan of the cooler is constant, circulating wind pressure and wind quantity are constant, cooling capacity of the circulating electric fan does not change along with the change of the rotating speed of the cooled motor, the defect that the cooling capacity of a fan in a rotor is reduced when the motor runs at a low speed is overcome, and the effects of improving heat dissipation of the motor and reducing temperature of the motor are further achieved.
Drawings
Fig. 1 is a block diagram of a prior art cooling arrangement for a compact variable frequency speed motor IC 416.
Fig. 2 is a three-dimensional structure view of the special-shaped backpack cooler of the utility model.
FIG. 3 is a front view of the assembly of the contoured backpack cooler and the compact variable frequency speed control motor;
figure 4 is a side view of the profile pack cooler and compact variable speed motor assembly.
In the figure: 1-rotor internal fan, 2-non-load end cooling cavity, 3-internal air duct, 4-load end cooling cavity, 5-radiating rib, 6-forced external cooling fan, 7-air inlet pipe, 8-air outlet pipe, 9-circulating electric fan, 10-backpack cooling cavity, 11-air-water heat exchanger, 12-cavity special-shaped part, 13-connecting edge and 14-observing hole.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which:
FIG. 1 shows: a compact variable-frequency speed-regulating motor generally adopts a combination mode of internal self-circulation and external forced air cooling, four uniformly-distributed inner air channels are arranged on a motor shell along the circumference and in the direction parallel to the axis of a rotor, one inner air channel is taken as an example to explain the internal self-circulation, and the other three inner air channels are circulated in the same way. The internal self-circulation is shown as a closed loop arrow, and the specific process is as follows: in the rotation process of the fan 1 in the rotor, hot air in the motor is sucked into a cooling cavity 2 at the non-load end of the motor and enters an air channel 3 in a motor shell communicated with the fan 2, and the hot air is led to a cooling cavity 4 at the load end of the motor along the axial direction of the motor along the inner air channel 3. In the process from 3 to 4, the hot air is changed into cold air with lower temperature after being subjected to heat exchange with the heat dissipation ribs 5 on the surface of the motor, enters the motor to take away the heat productivity of the motor, is sucked into the cooling cavity 2 at the non-load end of the motor by the fan 1 in the rotor, and circulates in the way. The external circulation is shown as an arrow above the motor heat dissipation rib 5, and the specific process is as follows: the heat on the radiating ribs 5 is cooled by a forced external cooling fan 6 arranged at a non-load end.
FIG. 2 shows: a compact variable-frequency speed-regulating motor special-shaped backpack cooler comprises two air inlet pipes 7 which are used for supporting a backpack foundation, two air outlet pipes 8 which are used for supporting the backpack foundation, a circulating electric fan 9, a backpack cooling cavity 10, an air-water heat exchanger 11 and two cavity special-shaped parts 12. The positions and the sizes of the air inlet pipe 7 and the air outlet pipe 8 are respectively correspondingly connected with connecting edges 13 of four observation holes 14 of a disassembled cover plate above the motor and screw holes left by the original disassembled cover plate around the observation holes 14 in a matched screw connection mode, and the mounting surface of the connecting edge 13 forms an included angle of 30-50 degrees with the horizontal plane and is attached to the mounting surface of the observation hole 14; the air inlet end of the special-shaped knapsack cooler is provided with a circulating electric small fan 9.
Fig. 3 and 4 show: the special-shaped backpack cooler is arranged on the upper part of the compact variable-frequency speed-regulating motor, the cooling mode of the original motor is reserved, an air inlet pipe 7 and an air outlet pipe 8 which are used for supporting a backpack foundation correspondingly are connected with four external observation holes through an upper inner air duct formed after a cover plate above the original motor is disassembled, and a cavity 10 of the backpack cooler is communicated with the interior of the motor. The path of the internal circulation is indicated by the arrow: the special-shaped backpack type cooler circulating electric small fan 9 and the motor rotor inner fan 1 lead hot air in a motor into a special-shaped backpack cooler cavity 10 through an air inlet pipe 7, and the hot air is cooled by an air-water heat exchanger 11 in the cooler and then reaches an air outlet pipeline 8 at the front end of the special-shaped backpack cooler and is sent into the motor. The purpose of further improving the heat dissipation of the motor is achieved through the circulation.
The utility model is based on the cooling mode of IC86W, and in order to avoid the interference between the cooler cavity and the original motor structure, the cavity is made by special-shaped design. The air inlets are arranged at two sides of the bottom of the cooler, not at the middle position of the common backpack for cooling, and the positions of the air inlets just correspond to the positions of the observation holes at two sides of the non-load end of the motor. The air outlet of the cooler is designed and manufactured with the same air inlet, but the difference is that the air outlet cavity extends out of the bottom of the special-shaped part 12. The special-shaped part 12 avoids the problem of interference between the backpack cooler and the upper junction box of the compact frequency conversion motor, well connects the backpack cavity with the inner air duct of the compact frequency conversion motor, increases the physical heat dissipation area of the motor, improves the heat dissipation effect of the motor, reduces the overall temperature rise of the motor, delays the insulation aging of the motor and the bearing abrasion, and therefore the overall service life of the motor is prolonged.
Claims (1)
1. Compact variable frequency speed motor abnormal shape knapsack cooler, its characterized in that: the air-water heat exchanger is characterized by comprising two air inlet pipes, two air outlet pipes, two cavity special-shaped parts, a circulating electric fan, a backpack cooling cavity and an air-water heat exchanger which are used for supporting a backpack foundation, wherein the air inlet pipes and the air outlet pipes are correspondingly connected with four observation holes of a detachable cover plate above a motor, and the connecting edges of the air inlet pipes and the air outlet pipes are connected and installed with screw holes left by the original detachable cover plate around the observation holes in a matched manner by screws; the circulating electric small fan is arranged at the air inlet end of the cooling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122054881.3U CN215934608U (en) | 2021-08-30 | 2021-08-30 | Special-shaped knapsack cooler of compact variable-frequency speed-regulating motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122054881.3U CN215934608U (en) | 2021-08-30 | 2021-08-30 | Special-shaped knapsack cooler of compact variable-frequency speed-regulating motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215934608U true CN215934608U (en) | 2022-03-01 |
Family
ID=80421173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122054881.3U Active CN215934608U (en) | 2021-08-30 | 2021-08-30 | Special-shaped knapsack cooler of compact variable-frequency speed-regulating motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215934608U (en) |
-
2021
- 2021-08-30 CN CN202122054881.3U patent/CN215934608U/en active Active
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