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CN-224205490-U - Power filter

CN224205490UCN 224205490 UCN224205490 UCN 224205490UCN-224205490-U

Abstract

The utility model belongs to the technical field of power filters, and particularly relates to a power filter, which comprises a mounting shell, a filter main body and an SMA spring, wherein the filter main body is fixedly arranged on the mounting shell, the mounting shell is U-shaped, two second rotating shafts are respectively rotatably arranged on two sides of the inner wall of the mounting shell, two groups of rotating assemblies are arranged in the mounting shell and are used for driving the two second rotating shafts to rotate simultaneously, the filter main body can be cooled through the above arranged structure, the heat accumulation of internal elements such as an inductance magnetic core, a power capacitor and a filter resistor due to high-frequency current and impedance loss is reduced, the aging rate of insulating materials is delayed, the function of adjusting the air output of fan blades is achieved, the rotating speed of a double-shaft motor is automatically reduced when the filter main body is at low temperature or low load, the energy is saved, the noise is reduced, and the filter is more environment-friendly, and further convenient for workers to use.

Inventors

  • LI SHENG
  • WANG YAOHUI

Assignees

  • 萨顿斯（上海）电源有限公司

Dates

Publication Date
20260505
Application Date
20250528

Claims (7)

  1. 1. The utility model provides a power filter, includes installation shell (1), filter main part (2) and SMA spring (15), its characterized in that, filter main part (2) fixed mounting is on installation shell (1), installation shell (1) are "U" style of calligraphy, the inner wall bottom fixed mounting of installation shell (1) has biax motor (5), two output of biax motor (5) are all fixedly connected with first pivot (6), two the other end of first pivot (6) is rotated respectively and is connected in the inner wall both sides of installation shell (1), SMA spring (15) set up at the top of filter main part (2), the top fixedly connected with fixed plate (11) of installation shell (1); The two second rotating shafts (7), the two second rotating shafts (7) are respectively and rotatably arranged on two sides of the inner wall of the installation shell (1), and three circumferentially distributed fan blades (10) are fixedly arranged outside the two second rotating shafts (7); the two groups of rotating assemblies are arranged in the installation shell (1) and are used for driving the two second rotating shafts (7) to rotate simultaneously.
  2. 2. A power filter according to claim 1, wherein the rotating assembly comprises two synchronizing wheels (8), the two synchronizing wheels (8) are fixedly connected to the outer parts of the first rotating shaft (6) and the second rotating shaft (7), and the outer parts of the two synchronizing wheels (8) are connected with the same synchronous belt (9) in a meshed manner.
  3. 3. The power filter according to claim 1, wherein a plurality of air inlets (3) are formed on both sides of the installation shell (1) at equal intervals, and a plurality of air outlets (4) are formed on both sides of the installation shell (1) at equal intervals.
  4. 4. A power filter according to claim 1, wherein the top of the filter body (2) is fixedly connected with a sliding rod (13), a sliding block (14) is slidably mounted on the outer part of the sliding rod (13), and the top of the SMA spring (15) is fixedly connected to the bottom of the sliding block (14).
  5. 5. A power filter according to claim 4, characterized in that a connecting plate (16) is fixedly connected to one side of the slider (14), and a connecting rod (19) is fixedly connected to the top of the connecting plate (16).
  6. 6. The power filter according to claim 5, wherein the bottom of the fixing plate (11) is provided with a mounting groove (17), a pressure sensor (18) is fixedly mounted in the mounting groove (17), and the connecting rod (19) is matched with the pressure sensor (18).
  7. 7. A power filter according to claim 6, characterized in that a control center (12) is fixedly arranged at the top of the fixing plate (11), and the control center (12) is electrically connected with the double-shaft motor (5) and the pressure sensor (18).

Description

Power filter Technical Field The utility model belongs to the technical field of power filters, and particularly relates to a power filter. Background The power filter is a passive electronic device for suppressing electromagnetic interference (EMI) in a power line, and has the core functions of separating conductive noise (such as high-frequency harmonic waves, spike pulses, radio frequency interference and the like) generated in a power grid or equipment from pure electric energy through an impedance matching principle and frequency selective filtering, so as to ensure that sensitive electronic equipment (such as precise instruments, medical equipment and communication systems) are supplied with power stably and reliably. The common mode/differential mode filter circuit is generally composed of an inductor (energy storage high frequency), a capacitor (bypass conducting high frequency) and a special medium (such as a ferrite magnetic ring), wherein common mode filtering aims at symmetrical interference between a ground wire and a fire/zero line, differential mode filtering suppresses asymmetric noise between the fire wire and the zero line, the two can cover a frequency range of 10 kHz-300 MHz in a cooperative mode, so that voltage ripple at an output end of a power supply is reduced to millivolt level, meanwhile, through EMC authentication tests (such as FCC and CISPR standards), other systems or interference misoperation of the equipment caused by exceeding standard of conduction emission is avoided, the design needs to balance cut-off frequency, insertion loss, leakage current and volume cost, for example, a double-stage pi-shaped filter structure is adopted in medical equipment, 60dB attenuation can be realized at a 150kHz position, and meanwhile, the 50 mu A leakage safety threshold is met. For example, chinese patent with bulletin number CN212850264U discloses a high-efficient heat dissipation power filter, which comprises a protective housing, a filter circuit arranged in the protective housing, a filter joint electrically connected with one end of the filter circuit, a power joint electrically connected with the other end of the filter circuit, a connecting plate arranged at one end of the protective housing, connecting holes arranged at two sides of the connecting plate, and a heat dissipation assembly arranged at the middle position of the upper end of the protective housing. According to the high-efficiency heat-dissipation power filter, the protective shell is fixed through the connecting plate, so that the protective shell is convenient to fix, and electronic elements in the protective shell are convenient to dissipate heat in real time through the heat dissipation assembly, so that the working quality of the power filter is effectively improved. The problem with the above-mentioned patent is that in the in-service use, do not possess the function of adjusting the air output of fan, lead to unable automatic reduction of air output of fan when the filter low temperature or low load, cause invalid consumption, and send out continuous noise, be unfavorable for staff to use, in view of this, we propose a power filter. Disclosure of utility model The present utility model is directed to a power filter, which solves the above-mentioned problems of the prior art. In view of the above, the utility model provides a power filter, which comprises a mounting shell, a filter main body and an SMA spring, wherein the filter main body is fixedly arranged on the mounting shell, the mounting shell is U-shaped, a double-shaft motor is fixedly arranged at the bottom of the inner wall of the mounting shell, two output ends of the double-shaft motor are fixedly connected with first rotating shafts, the other ends of the two first rotating shafts are respectively and rotatably connected with two sides of the inner wall of the mounting shell, the SMA spring is arranged at the top of the filter main body, and a fixing plate is fixedly connected with the top of the mounting shell; The two second rotating shafts are respectively and rotatably arranged on two sides of the inner wall of the mounting shell, and three circumferentially distributed fan blades are fixedly arranged outside the two second rotating shafts; the two groups of rotating assemblies are arranged in the installation shell and used for driving the two second rotating shafts to rotate simultaneously. In this technical scheme, through starting biax motor, the output will drive two first pivots and rotate, through synchronizing wheel and hold-in range that set up, drive two second pivots and rotate simultaneously, drive the flabellum afterwards around second pivot circular motion, at this moment can dispel the heat to the filter main part, through the above structure that sets up, can dispel the heat to the filter main part, reduce the heat accumulation that internal element like inductance magnetic core, power electric capacity, filter resistance produced