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CN-224204922-U - Contact type heat dissipation device and motor system

CN224204922UCN 224204922 UCN224204922 UCN 224204922UCN-224204922-U

Abstract

The application relates to a contact type heat dissipation device and a motor system, wherein the contact type heat dissipation device comprises a gasification jacket, an exhaust chamber, a vacuum pump, a liquid storage chamber, a nozzle, a temperature sensor, a controller and a plurality of connecting pipelines, the gasification jacket is sleeved on the outer peripheral side of a stator winding shell, the nozzle is arranged on the side wall of the gasification jacket, the temperature sensor is arranged on the surface of the stator winding shell, when the temperature sensor detects that the temperature of the stator winding shell is greater than or equal to a first preset temperature value, the controller controls the liquid pump to pump refrigerant from the liquid storage chamber into the nozzle and spray the refrigerant on the surface of the stator winding shell through the nozzle, the vacuum pump is communicated with the gasification jacket through the exhaust chamber, and the controller controls the vacuum pump to discharge gaseous refrigerant in the exhaust chamber to an external space. The contact type heat dissipation device and the motor system provided by the application solve the problem that the heat dissipation efficiency is low in a liquid cooling plate contact type heat dissipation or air cooling heat dissipation mode.

Inventors

  • LU GUODONG
  • XI JUNBIN
  • SHI TINGTING
  • CHAI ZHONGHUA

Assignees

  • 浙江银轮机械股份有限公司

Dates

Publication Date
20260505
Application Date
20250427

Claims (10)

  1. 1. The utility model provides a contact heat abstractor, its characterized in that includes gasification jacket (100), exhaust chamber (200), vacuum pump (300), liquid pump (400), liquid storage chamber (500), nozzle (600), temperature sensor, controller and a plurality of connecting tube (700), gasification jacket (100) cover is located the periphery side of stator winding (2000) shell, nozzle (600) set up in the lateral wall of gasification jacket (100), temperature sensor locates the surface of stator winding (2000) shell, nozzle (600) are through connecting tube (700) with liquid pump (400) intercommunication liquid storage chamber (500); When the temperature sensor detects that the temperature of the stator winding (2000) shell is greater than or equal to a first preset temperature value, the controller can control the liquid pump (400) to pump the refrigerant from the liquid storage chamber (500) into the nozzle (600) and spray the refrigerant on the surface of the stator winding (2000) shell through the nozzle (600) so as to enable the refrigerant to absorb heat and gasify on the surface of the stator winding (2000) shell; The vacuum pump (300) is communicated with the gasification jacket (100) through the exhaust chamber (200), and the controller can control the vacuum pump (300) to discharge the gaseous refrigerant in the exhaust chamber (200) to an external space.
  2. 2. The contact heat sink as recited in claim 1, further comprising an intake valve (800), said intake valve (800) being disposed at an end of said gasification jacket (100) remote from said exhaust chamber (200), said controller being capable of controlling said intake valve (800) to remain closed when an operation time of said vacuum pump (300) is less than a preset time, said controller being capable of controlling said intake valve (800) to open when said operation time of said vacuum pump (300) is greater than or equal to the preset time.
  3. 3. The contact heat sink of claim 2, wherein the flow area of the gasification jacket (100) tends to increase along the direction of the intake valve (800) to the exhaust chamber (200).
  4. 4. The contact type heat dissipating device according to claim 2, wherein a plurality of turbulence protrusions are arranged on a side wall of the stator winding (2000) housing, which is close to the gasification jacket (100), along a direction from the intake valve (800) to the exhaust chamber (200), one end of each turbulence protrusion is connected to the housing of the stator winding (2000), the other end of each turbulence protrusion protrudes toward the gasification jacket (100), and the gasification jacket (100) is attached to the housing of the stator winding (2000), and is attached to an outer wall of each turbulence protrusion.
  5. 5. The contact type heat sink as claimed in claim 1, wherein the controller is capable of controlling the liquid pump (400) and the vacuum pump (300) to be turned off when the temperature value measured by the temperature sensor is smaller than a second preset temperature value, the first preset temperature value being larger than the second preset temperature value.
  6. 6. The contact type heat sink according to claim 1, further comprising an annular liquid-dividing pipe (1000), wherein the annular liquid-dividing pipe (1000) is disposed along a circumferential direction of the gasification jacket (100) and is sequentially communicated with a plurality of the nozzles (600), and the liquid storage chamber (500) is communicated with the liquid-dividing pipe (1000) through the connecting pipe (700) and the liquid pump (400).
  7. 7. The contact type heat sink according to claim 1, wherein the number of the nozzles (600) is plural, and the plural nozzles (600) are arranged at intervals along the circumferential direction of the gasification jacket (100).
  8. 8. The contact heat sink of claim 1 wherein the gasification jacket (100) has a layer of wick structure (900) laid adjacent the inner wall of the stator winding (2000) housing, the wick structure (900) being capable of adsorbing liquid refrigerant.
  9. 9. The contact type heat sink as recited in claim 1, wherein the exhaust chamber (200) is covered on one side of the gasification jacket (100) and the stator winding (2000) and is fixedly connected to the gasification jacket (100).
  10. 10. An electric motor system comprising a drive motor having a stator winding (2000) and a contact heat sink according to any of claims 1-9 for cooling the stator winding (2000).

Description

Contact type heat dissipation device and motor system Technical Field The application relates to the technical field of motor heat dissipation devices, in particular to a contact type heat dissipation device and a motor system. Background Along with the rapid development of motor technology to high power density, miniaturization and high efficiency, the heat generated in the motor operation process is also increased obviously, and especially the temperature rise problem of the stator winding serving as one of main loss sources becomes a key bottleneck for restricting the improvement of the motor performance and reliability. Under high speed, high load or high frequency conditions, the stator winding may be rapidly increased in local temperature due to the combined action of resistance loss (copper loss), eddy current loss and dielectric loss, resulting in thermal aging of the insulating material, demagnetization of the magnet (permanent magnet motor) and even failure of winding short circuit. Therefore, the research of the efficient heat dissipation technology has important significance for guaranteeing the safe operation of the motor, prolonging the service life and optimizing the energy efficiency. In the prior art, a liquid cooling plate contact type heat dissipation or air cooling heat dissipation mode is generally adopted to dissipate heat of a stator winding of the motor. In the cooling scheme of the liquid cooling plate, due to the limitation of the flatness of the material surfaces, namely, a large amount of gaps exist between the liquid cooling plate and the stator winding shell, the effective contact area between the liquid cooling plate and the stator winding shell is far smaller than the theoretical contact area between the liquid cooling plate and the stator winding shell, and the heat transfer efficiency between the liquid cooling plate and the stator winding is further limited. In the scheme of air cooling, the specific heat capacity of air is smaller, so that the mode of air cooling and heat dissipation is only applicable to a low-power motor. Disclosure of utility model Accordingly, it is necessary to provide a contact type heat dissipation device and a motor system, so as to solve the problem of low heat dissipation efficiency in the existing liquid cooling plate contact type heat dissipation or air cooling heat dissipation mode. The contact type heat dissipation device comprises a gasification jacket, an exhaust chamber, a vacuum pump, a liquid storage chamber, a nozzle, a temperature sensor, a controller and a plurality of connecting pipelines, wherein the gasification jacket is sleeved on the outer peripheral side of a stator winding shell, the nozzle is arranged on the side wall of the gasification jacket, the temperature sensor is arranged on the surface of the stator winding shell, the nozzle is communicated with the liquid storage chamber through the connecting pipelines and the liquid pump, when the temperature sensor detects that the temperature of the stator winding shell is greater than or equal to a first preset temperature value, the controller can control the liquid pump to pump refrigerant into the nozzle from the liquid storage chamber and spray the refrigerant on the surface of the stator winding shell through the nozzle so that the refrigerant absorbs heat and gasifies on the surface of the stator winding shell, and the vacuum pump is communicated with the gasification jacket through the exhaust chamber, so that the controller can control the vacuum pump to discharge gaseous refrigerant in the exhaust chamber to an external space. In one embodiment, the contact heat dissipating device further includes an air inlet valve disposed at an end of the gasification jacket away from the exhaust chamber, and the controller is capable of controlling the air inlet valve to be kept in a closed state when the operation time of the vacuum pump is less than a preset time, and controlling the air inlet valve to be opened when the operation time of the vacuum pump is greater than or equal to the preset time. In one embodiment, the flow area of the gasification jacket tends to increase in the direction from the inlet valve to the exhaust chamber. In one embodiment, the side wall of the stator winding shell, which is close to the gasification jacket, is provided with a plurality of turbulence protrusions which are arranged along the direction from the air inlet valve to the exhaust chamber, one end of each turbulence protrusion is connected with the shell of the stator winding, the other end of each turbulence protrusion protrudes towards the gasification jacket, and the gasification jacket is attached to the shell of the stator winding and the outer wall of each turbulence protrusion. In one embodiment, the controller is capable of controlling the liquid pump and the vacuum pump to be turned off when the temperature value measured by the temperature sensor is smaller than a second preset t