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CN-121985500-A - Electric control box

CN121985500ACN 121985500 ACN121985500 ACN 121985500ACN-121985500-A

Abstract

The application discloses an electric control box which comprises a box body, a control board, a radiator and an insect prevention cover, wherein the box body is provided with a mounting groove, the control board is mounted in the mounting groove and comprises a main board body and a power device connected with the main board body, the radiator is in heat conduction connection with the power device, the insect prevention cover covers one side, facing away from the radiator, of the power device, and an insect prevention space for accommodating the power device is formed by enclosing the insect prevention cover and the radiator. By means of local sealing protection of the power device, the whole electric control box is not required to be comprehensively sealed, so that insect invasion to the core component is accurately blocked, and protection redundancy caused by integral sealing is avoided; the heat dissipation efficiency is improved, the heat transfer loss is reduced due to the direct heat conduction connection between the radiator and the power device, meanwhile, the heat exchange between the radiator and the outside is not affected by the layout of the insect prevention cover, the heat dissipation effect is guaranteed, and the integral sealing structure is simplified due to the local protection design in structural optimization, so that the volume of the electric control box is reduced, and the assembly complexity and the production cost are reduced.

Inventors

  • YU ZESEN

Assignees

  • 广州视源电子科技股份有限公司
  • 合肥视研电子科技有限公司

Dates

Publication Date
20260505
Application Date
20251107

Claims (16)

  1. 1. An electronic control box, characterized by comprising: the box body (2) is provided with a mounting groove; the control board (1) is arranged in the mounting groove, and the control board (1) comprises a main board body (11) and a power device (12) connected to the main board body (11); the radiator (4) is in heat conduction connection with the power device (12); and the insect prevention cover (3) covers one side, facing away from the radiator (4), of the power device (12), and an insect prevention space for accommodating the power device (12) is formed by enclosing the insect prevention cover (3) and the radiator (4).
  2. 2. An electronic control box according to claim 1, characterized in that the radiator (4) is fixed to the box body (2).
  3. 3. The electronic control box according to claim 2, characterized in that a heat dissipation hole (23) communicated with the mounting groove is formed in the box body (2), the heat radiator (4) is fixed outside the box body (2) and covers the heat dissipation hole (23), and the power device (12) is in heat conduction connection with the heat radiator (4) through the heat dissipation hole (23).
  4. 4. An electronic control box according to claim 3, characterized in that the outer wall of the box body (2) is provided with a sink groove (24) corresponding to the appearance of the radiator (4), the radiating hole (23) is arranged at the bottom of the sink groove (24), and the radiator (4) is at least partially embedded and installed in the sink groove (24).
  5. 5. The electronic control box according to any one of claims 2 to 4, wherein, The radiator (4) is locked to the box body (2) through a first connecting piece (42); and/or, the radiator (4) is locked to the box body (2) through a first buckling structure.
  6. 6. The electronic control box according to claim 4, characterized in that a supporting flange (241) arranged around the radiating hole (23) is convexly arranged at the bottom of the sink (24), and the radiator (4) abuts against the supporting flange (241).
  7. 7. An electronic control box according to claim 3, characterized in that the box body (2) is provided with a first installation area (21) located in the installation groove, the heat dissipation holes (23) are corresponding to the first installation area (21), and the insect prevention cover (3) is installed in the first installation area (21) so as to form the insect prevention space with the radiator (4) outside in a surrounding manner.
  8. 8. The electronic control box according to claim 7, wherein the box body (2) is provided with a second mounting area (22) positioned in the mounting groove, the main board body (11) is mounted on the second mounting area (22), the power device (12) comprises a device pin (122) and a device main body (121), the device pin (122) is connected with the main board body (11), and the device main body (121) extends to the first mounting area (21) and is aligned with the heat dissipation hole (23); The second installation area (22) is sunk relative to the first installation area (21), so that the top surface of the main board body (11) is flush with the bottom surface of the first installation area (21), and the insect prevention cover (3) is abutted to the flush surfaces of the first installation area (21) and the main board body (11), so that the insect prevention cover (3) covers the device pins (122) and the device main body (121) at the same time.
  9. 9. The electronic control box according to claim 8, characterized in that a sealing step (221) is convexly arranged on one side, close to the first mounting area (21), of the second mounting area (22), and the bottom surface of the main board body (11) abuts against the sealing step (221).
  10. 10. The electronic control box according to claim 1, wherein, The insect prevention cover (3) is locked on the box body (2) or the radiator (4) through a second connecting piece (31); And/or, the insect prevention cover (3) is locked on the box body (2) or the radiator (4) through a second buckling structure (211).
  11. 11. The electronic control box according to claim 10, characterized in that said second fastening structures (211) are respectively provided on two opposite sides of said box body (2) corresponding to said insect-proof cover (3); the radiator (4) is provided with a second threaded hole, and the second connecting piece (31) penetrates through the insect prevention cover (3) and is in threaded locking attachment with the second threaded hole; Wherein the second connecting piece (31) is positioned between the second buckling structures (211) at two sides.
  12. 12. The electronic control box according to claim 1, wherein, The control panel (1) is locked to the box body (2) through a third connecting piece (111); and/or, the control panel (1) is locked to the box body (2) through a third buckling structure (222).
  13. 13. The electronic control box according to claim 12, wherein the box body (2) is provided with the third buckling structures (222) on two opposite sides corresponding to the insect prevention cover (3); The box body (2) is further provided with a support column (223), the support column (223) is provided with a third threaded hole, and the third connecting piece (111) penetrates through the control board (1) and is in threaded locking attachment with the third threaded hole.
  14. 14. The electronic control box according to claim 1, wherein a plurality of the power devices (12) are provided, and a plurality of the power devices (12) are arranged on the same side of the main board body (11) in a concentrated manner.
  15. 15. The electronic control box according to claim 1, characterized in that the power device (12) is provided with a connecting hole, the radiator (4) is correspondingly provided with a connecting threaded hole (41), and a connecting screw (123) passes through the connecting hole and is in threaded locking with the connecting threaded hole (41).
  16. 16. An electronic control box according to claim 1, characterized in that the insect prevention cover (3) is provided with ventilation holes (32).

Description

Electric control box Technical Field The application relates to the technical field of air conditioning equipment, in particular to an electric control box. Background In the technical field of air conditioner hosts, insect prevention and heat dissipation performance of an electric control box are always technical difficulties which are difficult to reconcile. In order to prevent the short circuit or line damage of the circuit board caused by the invasion of insects such as cockroaches and moths, the control board needs to be tightly protected through a sealing structure, a protective net and the like, so that the air circulation resistance can be obviously increased, a large amount of heat generated when power devices such as IGBT modules (Insulated Gate Bipolar Transistor Module, insulated gate bipolar transistor modules) and rectifier bridges on the control board run is required, and the electric control box is required to have a smooth ventilation path to ensure heat dissipation, otherwise, the temperature of the element is easy to exceed the rated range, so that the performance is attenuated or even fails. The physical contradiction between the protection tightness and the air fluidity makes the traditional electric control box always have the defects of large volume, high production cost and the like in structural design, and in a high-humidity multi-insect environment, the passive heat dissipation efficiency is easily influenced by wind resistance of a protection structure, the temperature of a control panel easily breaks through a safety threshold of 85 ℃, and the heat dissipation deterioration is aggravated due to dust accumulation blockage of a protection net after long-term use, so that the innovation of structural design is needed to realize the cooperative optimization of insect prevention and heat dissipation functions. Disclosure of Invention The embodiment of the invention aims to provide an electric control box which can solve the problem that the electric control box in the prior art is difficult to effectively consider insect prevention and heat dissipation functions. In order to achieve the above purpose, the application adopts the following technical scheme: An electronic control box, comprising: The box body is provided with a mounting groove; The control board is arranged in the mounting groove and comprises a main board body and a power device connected with the main board body; The radiator is in heat conduction connection with the power device; and the insect prevention cover covers one side, facing away from the radiator, of the power device, and an insect prevention space for accommodating the power device is formed by enclosing the insect prevention cover and the radiator. The embodiment of the application has the advantages that the local sealing protection of the power device is adopted, the whole electric control box is not required to be comprehensively sealed, the invasion of insects to the core component is accurately blocked, the protection redundancy caused by the whole sealing is avoided, the heat transfer loss is reduced due to the direct heat conduction connection between the radiator and the power device, meanwhile, the heat exchange between the radiator and the outside is not influenced by the layout of the insect prevention cover, the heat dissipation effect is ensured, the whole sealing structure is simplified due to the local protection design on the structural optimization, the volume of the electric control box is reduced, the assembly complexity and the production cost are reduced, the stable work in complex environments such as insect population, high humidity and the like can be realized on the environmental adaptability, the fault risk caused by the contradiction between insect prevention and heat dissipation is reduced, the service life of the electric control box is prolonged, and the reliable operation of an air conditioner host is ensured. The design breaks through the contradictory relation between traditional sealing and ventilation, realizes the collaborative optimization of insect prevention and heat dissipation through functional partitioning, and has stronger practicability and innovation. Optionally, the heat sink is fixed to the case. In the scheme of the embodiment, the rigid fixation of the radiator and the box body avoids the problem of poor heat conduction contact caused by the fact that the radiator shakes along with the control panel in the traditional design, further ensures the close fit of the power device and the radiator, reduces the fluctuation of heat resistance, ensures more stable heat dissipation efficiency, and is particularly suitable for the scene that vibration is possibly generated when an air conditioner host operates. And moreover, the problem that the pins connected with the main board body of the power device are broken due to vibration of the radiator can be effectively avoided. And if the box body is made of metal mate