CN220274146U - Novel heat radiation structure of variable frequency power supply - Google Patents

Abstract

The utility model provides a novel heat radiation structure of a variable frequency power supply, which comprises a driving fan, a driving transmission shaft and a supporting plate, wherein the supporting plate is arranged at the rear side of the inner wall of the main body of the variable frequency power supply, and the driving fan is arranged at the rear end of the driving transmission shaft.

Description

Novel heat radiation structure of variable frequency power supply

Technical Field

The utility model relates to the technical field of heat dissipation of variable frequency power supplies, in particular to a novel heat dissipation structure of a variable frequency power supply.

Background

The variable frequency power supply is characterized in that alternating current in the mains supply is converted from AC to DC to AC and is output as pure sine waves, the output frequency and the voltage are adjustable within a certain range, the variable frequency power supply is different from a variable frequency speed regulation controller for motor speed regulation and is also different from a common alternating current stabilized voltage power supply, the variable frequency power supply is commonly called in China, more precisely, the variable frequency power supply is called an alternating current power frequency converter, and the variable frequency power supply is provided with a corresponding heat dissipation structure to dissipate internal heat because of large heat productivity of internal circuit elements of the variable frequency power supply.

The utility model discloses a variable frequency power supply that number CN206402108U "provided sets up the shell into detachable structure, and the inside trouble of variable frequency power supply is convenient in time overhauls, simultaneously, has set up heat radiation structure, can reduce because the power stability in use and the security that heat dissipation is not enough to cause.

However, the following drawbacks exist in the above technical solutions and the prior art:

the radiating structure in the variable frequency power supply only depends on the radiating fan to discharge the internal heat to the outside, so that the variable frequency power supply needs to enable the radiating fan to work continuously in the actual use process, the radiating fan is provided with two groups, the power consumption of the variable frequency power supply is further increased, and external dust can directly enter the variable frequency power supply through the shutter structure in the radiating process, so that the dust accumulated by electronic components in the variable frequency power supply can influence the self radiating capacity of the variable frequency power supply easily, and the practicality is to be improved.

Disclosure of Invention

The utility model aims to provide a novel heat dissipation structure of a variable frequency power supply, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a novel heat radiation structure of variable frequency power supply, includes variable frequency power supply main part, panel and landing leg, the panel is installed to the terminal surface before the variable frequency power supply main part, the landing leg is installed to the terminal surface symmetry about the variable frequency power supply main part, the inside initiative cooling module that is provided with of variable frequency power supply main part, and initiative cooling module is used for carrying out quick cooling to the variable frequency power supply main part inside, terminal surface symmetry is provided with supplementary cooling module about the variable frequency power supply main part, and supplementary cooling module is used for assisting giving off the terminal surface heat about the variable frequency power supply main part.

Preferably, the initiative cooling component comprises a initiative fan, a initiative transmission shaft, a supporting plate and a driving motor, wherein the supporting plate is arranged on the rear side of the inner wall of the variable frequency power supply main body, the driving motor is arranged in the middle of the front end face of the supporting plate, the driving motor transmission end is connected with the initiative transmission shaft, and the initiative fan is arranged at the rear end of the initiative transmission shaft.

Preferably, the auxiliary heat dissipation assembly comprises a heat absorption plate, through holes and cooling fins, wherein the heat absorption plate is symmetrically arranged on the upper end face and the lower end face of the variable frequency power supply main body, the cooling fins are fixedly connected to the upper end face of the heat absorption plate, and the through holes are formed in the heat absorption plate.

Preferably, the first driven transmission shaft is installed on the left side of the driving transmission shaft, the second driven transmission shaft is installed on the right side of the driving transmission shaft, a first driving belt pulley is arranged on the rear side of the annular side face of the driving transmission shaft, and a second driving belt pulley is arranged on the front side of the annular side face of the driving transmission shaft.

Preferably, the annular side rear side of the first driven transmission shaft is provided with a first driven belt wheel, a first driving belt is arranged between the first driven belt wheel and the first driving belt wheel, the front side of the annular side of the second driven transmission shaft is provided with a second driven belt wheel, a second driving belt is arranged between the second driven belt wheel and the second driving belt wheel, the front side of the annular side of the first driven transmission shaft is provided with a first limiting ring, the front side of the annular side of the second driven transmission shaft is provided with a second limiting ring, the rear end of the first driven transmission shaft is provided with a first auxiliary fan, and the rear end of the second driven transmission shaft is provided with a second auxiliary fan.

Preferably, the left and right sides of the lower end surface of the heat absorbing plate are symmetrically provided with fixing chucks, and the front side and the rear side of the radiating fin are symmetrically and fixedly connected with radiating fins.

Preferably, the fixed frame is symmetrically and fixedly connected with the left end face and the right end face of the variable frequency power supply main body, the filter screen is inserted into the inner wall of the fixed frame, a pinching piece is arranged on the upper side of the right end face of the filter screen, and a temperature control switch is arranged in the middle of the rear end face of the panel.

Preferably, ventilation cavities are symmetrically formed in the left end face and the right end face of the variable-frequency power supply main body, and a protection net piece is arranged on the rear end face of the variable-frequency power supply main body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model discloses at initiative transmission shaft drive initiative fan rotation in-process, first driving pulley can drive first driven pulley and rotate, make first driven pulley drive first auxiliary flabellum through first driven transmission shaft and rotate, and second driving pulley can drive second driven pulley and rotate, make second driven pulley drive second auxiliary flabellum through second driven transmission shaft and rotate, so that first auxiliary flabellum and second auxiliary flabellum rotate together with the driving flabellum, and then make the inside heat of variable frequency power supply main part can be discharged fast, and temperature detect switch avoids driving motor to need work always, with this power consumption that reduces driving motor, filter screen piece can block the filtration to the air of process simultaneously, avoid the inside dust of piling up easily of variable frequency power supply main part;

2. the utility model discloses an install the absorber plate respectively at terminal surface about the variable frequency power supply main part to the absorber plate adsorbs and gives off to outside to the majority heat that the terminal surface produced about the variable frequency power supply main part, and a plurality of through holes make things convenient for outside air to get into inside the heating panel, make the heating panel radiating effect better, and a plurality of fin can improve the radiating effect of absorber plate, a plurality of fin also can improve the fin radiating effect simultaneously, not only avoid the variable frequency power supply main part terminal surface to produce the heat easily and pile up about, also reduced driving motor's operating frequency simultaneously.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

FIG. 2 is a block diagram of an auxiliary heat dissipating assembly according to the present utility model;

FIG. 3 is a view showing the structure of the fixing frame and the filter screen sheet according to the present utility model;

FIG. 4 is a block diagram of an active cooling assembly according to the present utility model;

FIG. 5 is a top cross-sectional view of an active cooling assembly according to the present utility model;

FIG. 6 is a right side cross-sectional view of the active cooling module and the auxiliary cooling module according to the present utility model.

In the figure: 1. a variable frequency power supply main body; 11. a protective mesh; 12. a ventilation chamber; 2. an active cooling component; 21. a filter screen; 211. kneading the slices; 22. a fixed frame; 23. an active fan; 24. a first auxiliary fan; 25. a first driven drive shaft; 251. a first driven pulley; 252. a first stop collar; 26. a drive transmission shaft; 261. a second driving pulley; 262. a first driving pulley; 27. a second driven drive shaft; 271. a second limiting ring; 272. a second driven pulley; 28. a second auxiliary fan; 29. a support plate; 212. a drive motor; 3. an auxiliary heat dissipation assembly; 31. fixing the clamping head; 32. a heat absorbing plate; 33. a through hole; 34. a heat sink; 35. a heat radiation fin; 4. a panel; 41. a temperature control switch; 5. and (5) supporting legs.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the present utility model provides a technical solution:

embodiment one:

the utility model provides a novel heat radiation structure of variable frequency power supply, including variable frequency power supply main part 1, panel 4 and landing leg 5, panel 4 is installed to variable frequency power supply main part 1 front end face, panel 4 makes things convenient for staff to control variable frequency power supply main part 1 work, and because variable frequency power supply main part 1 theory of operation and inner structure are comparatively mature technique among the prior art, so do not make too much in here, panel 4 is detachable structure, it overhauls variable frequency power supply main part 1 inside to make things convenient for the panel 4 of detachable structure, temperature-sensing switch 41 is installed to panel 4 rear end face intermediate position, and temperature-sensing switch 41 output is connected with driving motor 212 through the wire, temperature-sensing switch 41 input is connected with external power supply through the wire, temperature-sensing switch 41 is kick-type temperature-sensing switch 41, temperature-sensing switch 41 for kick-type temperature-sensing switch 41 utilizes dish bimetallic strip to produce the principle of jumping in the twinkling of an eye under the effect of temperature, through the effect of mechanism, make the contact act rapidly, reach the purpose of disconnection or switch-on circuit, so that driving motor 212 is automatic start when the inside temperature of variable frequency power supply main part 1 is high, and temperature reduces to the power consumption of automatic shutdown to a certain value, with this saving driving motor 212.

The landing leg 5 is installed to terminal surface symmetry about the variable frequency power supply main part 1, and four are installed to landing leg 5, four landing legs 5 can carry out steady rest to variable frequency power supply main part 1, the inside initiative cooling module 2 that is provided with of variable frequency power supply main part 1, and initiative cooling module 2 is used for carrying out quick cooling to variable frequency power supply main part 1 inside, terminal surface symmetry is provided with supplementary radiator unit 3 about the variable frequency power supply main part 1, and supplementary radiator unit 3 is used for carrying out supplementary giving off to variable frequency power supply main part 1 up-down terminal surface heat, ventilation chamber 12 has been seted up to terminal surface symmetry about the variable frequency power supply main part 1, ventilation chamber 12 makes things convenient for outside air to get into the variable frequency power supply main part 1 inside, protection net piece 11 is installed to variable frequency power supply main part 1 rear end face, protection net piece 11 can shelter from the protection to initiative fan 23, first supplementary fan 24 and second supplementary fan 28 respectively.

The active cooling component 2 comprises an active fan 23, an active transmission shaft 26, a support plate 29 and a driving motor 212, wherein the support plate 29 is arranged at the rear side of the inner wall of the variable frequency power supply main body 1, the support plate 29 can support the active transmission shaft 26, a first driven transmission shaft 25, a second driven transmission shaft 27 and the driving motor 212, limit blocking covers are symmetrically arranged at the left side and the right side of the rear end face of the support plate 29, the limit blocking covers can respectively block and limit the first limit ring 252 and the second limit ring 271, the displacement or shaking of the first limit ring 252 and the second limit ring 271 in the rotating and using process is avoided, the driving motor 212 is arranged at the middle position of the front end face of the support plate 29, the driving motor 212 can drive the active transmission shaft 26 to rotate, the driving end of the driving motor 212 is connected with the active transmission shaft 26, the active transmission shaft 26 can drive the active fan 23 to rotate, the active fan 23 is arranged at the rear end of the active transmission shaft 26, the driving fan 23 generates a suction force when rotating so as to rapidly discharge the heat in the variable frequency power supply main body 1, the left side of the driving transmission shaft 26 is provided with a first driven transmission shaft 25, the rear end of the first driven transmission shaft 25 is provided with a first auxiliary fan 24, the first auxiliary fan 24 generates a suction force when rotating so as to further rapidly discharge the heat in the variable frequency power supply main body 1, the first driven transmission shaft 25 drives the first auxiliary fan 24 to rotate, the rear side of the annular side surface of the first driven transmission shaft 25 is provided with a first driven belt pulley 251, a first transmission belt is arranged between the first driven belt pulley 251 and the first driving belt pulley 262, the first driven belt pulley 251 is connected with the first driven transmission shaft 25 in a welding mode, the first driven belt pulley 251 drives the first driven transmission shaft 25 to rotate, the front side of the annular side surface of the first driven transmission shaft 25 is provided with a first limiting ring 252, and the first spacing ring 252 is connected with the first driven transmission shaft 25 in a welding mode, and the first spacing ring 252 can limit the first driven transmission shaft 25 so as to avoid displacement or shaking of the first driven transmission shaft 25 in the rotation use process.

The second driven transmission shaft 27 is installed on the right side of the driving transmission shaft 26, the second driven transmission shaft 27 can drive the second auxiliary fan 28 to rotate, the second auxiliary fan 28 is installed at the rear end of the second driven transmission shaft 27, suction force can be generated when the second auxiliary fan 28 rotates, so that heat in the variable-frequency power supply main body 1 is further discharged rapidly, a second driven belt wheel 272 is arranged on the front side of the annular side of the second driven transmission shaft 27, a second transmission belt is arranged between the second driven belt wheel 272 and the second driving belt wheel 261, the second driven belt wheel 272 is connected with the second driven transmission shaft 27 in a welding mode, the second driven belt wheel 272 can drive the second driven transmission shaft 27 to rotate, a second limiting ring 271 is arranged on the front side of the annular side of the second driven transmission shaft 27, the second limiting ring 271 is connected with the second driven transmission shaft 27 in a welding mode, and the second limiting ring 271 can limit the second driven transmission shaft 27, so that displacement or shaking of the second driven transmission shaft 27 in the rotation using process is avoided.

The utility model provides a filter screen 21 is washd or is replaced to filter screen 21 in the later stage, the annular side rear side of driving shaft 26 is provided with first driving pulley 262, and first driving pulley 262 links to each other with driving shaft 26 through the welding mode, first driving pulley 262 can drive first driven pulley 251 rotation through first driving belt, driving shaft 26 annular side front side is provided with second driving pulley 261, and second driving pulley 261 links to each other with driving shaft 26 through the welding mode, second driving pulley 261 can drive second driven pulley 272 rotation through the second driving belt, the terminal surface symmetry is fixed with fixed frame 22 about the variable frequency power supply main part 1, fixed frame 22 can support the location to filter screen 21, filter screen 21 is inserted to fixed frame 22 inner wall, and filter screen 21 is nylon filter screen, filter screen 21 for nylon filter screen can block the most dust in the air that gets into the variable frequency power supply main part 1 inside, avoid variable frequency power supply main part 1 inside to pile up the dust easily, filter screen 21 right-hand member 211 right-hand member face upside is provided with pinching piece 211, make things convenient for the staff to carry out the dismouting to filter screen 21, so as to later stage wash or replace filter screen 21.

Embodiment two:

on the basis of the first embodiment, in this embodiment, the heat absorbing plates 32 are respectively installed on the upper and lower end surfaces of the variable frequency power supply main body 1, so that most of the heat generated by the upper and lower end surfaces of the variable frequency power supply main body 1 is absorbed and dissipated to the outside by the heat absorbing plates 32, and the plurality of cooling fins 34 increase the cooling area of the heat absorbing plates 32, so that the cooling effect of the heat absorbing plates 32 is improved, and the situation that the upper and lower end surfaces of the variable frequency power supply main body 1 easily generate heat accumulation is avoided.

The auxiliary heat dissipation assembly 3 comprises heat absorption plates 32, through holes 33 and cooling fins 34, wherein the heat absorption plates 32 are symmetrically arranged on the upper end face and the lower end face of the variable frequency power supply main body 1, two groups of heat absorption plates 32 are arranged, the two groups of heat absorption plates 32 are identical in specification, the two groups of heat absorption plates 32 absorb and dissipate most of heat generated by the upper end face and the lower end face of the variable frequency power supply main body 1 respectively, fixing clamping heads 31 are symmetrically arranged on the left side and the right side of the lower end face of the heat absorption plates 32, the fixing clamping heads 31 are connected with the heat absorption plates 32 in a welding mode, the fixing clamping heads 31 are convenient for clamping and fixing the heat absorption plates 32 on the upper end face and the lower end face of the variable frequency power supply main body 1, and also convenient for later workers to detach and clean the heat absorption plates 32, cooling fins 34 are fixedly connected to the upper end face of the heat absorption plates 32, the cooling fins 34 are fixedly connected with the heat absorption plates 32 in a plurality of specifications are identical, and the cooling fins 34 increase the cooling area of the heat absorption plates 32.

The fin 35 is fixedly connected with in both sides symmetry around fin 34, and fin 35 links to each other through the welding mode with fin 34, fin 35 fixedly connected with is a plurality of, and a plurality of fin 35 specifications are the same, a plurality of fin 35 have increased the radiating area of fin 34, thereby further improve fin 34 radiating effect, through hole 33 has been seted up to absorber plate 32 inside, and through hole 33 has been seted up a plurality of, a plurality of through holes 33 make things convenient for outside air to get into the heating panel inside, make the heating panel radiating effect better, absorber plate 32, fin 34 and fin 35 material are high conductive copper, the material is high conductive copper's absorber plate 32, fin 34 and fin 35 heat conductivity are better, thereby carry out auxiliary heat dissipation to the up-and-down terminal surface of variable frequency power supply main part 1.

Working principle: in the use of the variable frequency power supply main body 1, heat can be generated in the variable frequency power supply main body 1, at the moment, most of the heat generated by the upper end face and the lower end face of the variable frequency power supply main body 1 can be adsorbed and dissipated to the outside by the two groups of heat absorbing plates 32 respectively, the plurality of through holes 33 facilitate the external air to enter the inside of the heat dissipating plate, so that the heat dissipating effect of the heat dissipating plate is better, the heat dissipating area of the heat absorbing plates 32 is increased by the plurality of heat dissipating fins 34, the heat dissipating area of the heat dissipating fins 34 is increased by the plurality of heat dissipating fins 35, the heat dissipating effect of the heat dissipating fins 34 is further improved, and the situation that the upper end face and the lower end face of the variable frequency power supply main body 1 are easily accumulated by heat is avoided.

When the internal temperature of the variable frequency power supply main body 1 exceeds the preset value of the temperature control switch 41, the temperature control switch 41 is closed to drive the driving motor 212 to drive the driving transmission shaft 26 to rotate, so that the driving transmission shaft 26 drives the driving fan 23 to rotate, at the moment, the rotating driving fan 23 can generate a suction force so as to discharge the internal heat of the variable frequency power supply main body 1, meanwhile, the driving transmission shaft 26 can drive the first driving belt pulley 262 and the second driving belt pulley 261 to rotate together, at the moment, the first driving belt pulley 262 can drive the first driven belt pulley 251 to rotate through the first driving belt pulley 251, the first driven belt pulley 251 can drive the first auxiliary fan blade to rotate through the first driven transmission shaft 25, the second driving belt pulley 261 can drive the second driven belt pulley 272 to rotate through the second driven transmission shaft 27, so that the first auxiliary fan blade and the second auxiliary fan blade rotate together with the driving fan blade, and the internal heat of the variable frequency power supply main body 1 can be discharged rapidly; meanwhile, a part of external air can be sucked into the variable frequency power supply main body 1 through the filter screen 21 and the ventilation cavity 12, so that the air in the variable frequency power supply main body 1 is circulated, the inside of the variable frequency power supply main body 1 is cooled down rapidly, in the process, most dust in the air entering the inside of the variable frequency power supply main body 1 can be blocked and filtered by the filter screen 21 with a nylon filter screen, the dust is prevented from being easily accumulated in the variable frequency power supply main body 1, and when the internal temperature of the variable frequency power supply main body 1 is lower than a preset value of the temperature control switch 41, the temperature control switch 41 is turned off to stop the driving motor 212, so that the power consumption of the driving motor 212 is saved. .

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a novel heat radiation structure of variable frequency power supply, includes variable frequency power supply main part (1), panel (4) and landing leg (5), its characterized in that: the utility model discloses a variable frequency power supply, including variable frequency power supply main part (1), panel (4) are installed to terminal surface before variable frequency power supply main part (1), landing leg (5) are installed to terminal surface symmetry about variable frequency power supply main part (1), variable frequency power supply main part (1) inside is provided with initiative cooling module (2), and initiative cooling module (2) are used for carrying out quick cooling to variable frequency power supply main part (1) inside, terminal surface symmetry is provided with supplementary radiator unit (3) about variable frequency power supply main part (1), and supplementary radiator unit (3) are used for carrying out supplementary giving off to variable frequency power supply main part (1) up and down terminal surface heat.

2. The novel heat dissipation structure of a variable frequency power supply according to claim 1, wherein: the active cooling assembly (2) comprises an active fan (23), an active transmission shaft (26), a supporting plate (29) and a driving motor (212), wherein the supporting plate (29) is installed on the rear side of the inner wall of the variable frequency power supply main body (1), the driving motor (212) is installed in the middle of the front end face of the supporting plate (29), the driving end of the driving motor (212) is connected with the active transmission shaft (26), and the active fan (23) is installed at the rear end of the active transmission shaft (26).

3. The novel heat dissipation structure of a variable frequency power supply according to claim 1, wherein: the auxiliary heat dissipation assembly (3) comprises a heat absorption plate (32), through holes (33) and heat dissipation fins (34), wherein the heat absorption plate (32) is symmetrically arranged on the upper end face and the lower end face of the variable frequency power supply main body (1), the heat dissipation fins (34) are fixedly connected to the upper end face of the heat absorption plate (32), and the through holes (33) are formed in the heat absorption plate (32).

4. The novel heat dissipation structure of a variable frequency power supply according to claim 2, wherein: the novel transmission device is characterized in that a first driven transmission shaft (25) is arranged on the left side of the driving transmission shaft (26), a second driven transmission shaft (27) is arranged on the right side of the driving transmission shaft (26), a first driving belt wheel (262) is arranged on the rear side of the annular side face of the driving transmission shaft (26), and a second driving belt wheel (261) is arranged on the front side of the annular side face of the driving transmission shaft (26).

5. The novel heat dissipation structure of a variable frequency power supply according to claim 4, wherein: the novel electric fan is characterized in that a first driven belt pulley (251) is arranged on the rear side of the annular side face of the first driven transmission shaft (25), a second driven belt pulley (272) is arranged on the front side of the annular side face of the second driven transmission shaft (27), a first limiting ring (252) is arranged on the front side of the annular side face of the first driven transmission shaft (25), a second limiting ring (271) is arranged on the front side of the annular side face of the second driven transmission shaft (27), a first auxiliary fan (24) is arranged at the rear end of the first driven transmission shaft (25), and a second auxiliary fan (28) is arranged at the rear end of the second driven transmission shaft (27).

6. A novel heat dissipation structure for a variable frequency power supply as defined in claim 3, wherein: fixing chucks (31) are symmetrically arranged on the left side and the right side of the lower end face of the heat absorbing plate (32), and radiating fins (35) are symmetrically and fixedly connected to the front side and the rear side of the radiating fin (34).

7. The novel heat dissipation structure of a variable frequency power supply according to claim 1, wherein: the variable frequency power supply is characterized in that a fixing frame (22) is symmetrically and fixedly connected to the left end face and the right end face of the variable frequency power supply main body (1), a filter screen piece (21) is inserted into the inner wall of the fixing frame (22), a pinching piece (211) is arranged on the upper side of the right end face of the filter screen piece (21), and a temperature control switch (41) is arranged in the middle of the rear end face of the panel (4).

8. The novel heat dissipation structure of a variable frequency power supply according to claim 1, wherein: ventilation cavities (12) are symmetrically formed in the left end face and the right end face of the variable-frequency power supply main body (1), and a protection net piece (11) is arranged on the rear end face of the variable-frequency power supply main body (1).