CN220606415U - Heat dissipation mechanism for frequency converter - Google Patents

Abstract

The utility model discloses a heat dissipation mechanism for a frequency converter, which comprises a shell, wherein a wind box is fixedly connected to the rear end surface of the inside of the shell, a left refrigerating box and a right refrigerating box are fixedly connected to the lower end surface of the wind box, a plurality of uniformly distributed semiconductor refrigerating sheets are fixedly connected to the inside of the two refrigerating boxes, fans below the two refrigerating boxes are installed at the lower end of the inside of the shell, air inlet pipes are communicated between the air inlets of the two fans and the left and right inner side walls of the shell, a first pipeline is communicated between the two refrigerating boxes and the two fans, a second pipeline is communicated between the other side wall of the two refrigerating boxes and the upper end surface of the wind box, the two fans are started, the fans suck air flow into the air inlet pipes through a filter screen, the impurities in the air are filtered out through the filter screen, the inside of the shell and the wind box are prevented from being accumulated, then the air flow enters the inside the refrigerating boxes through the first pipeline, the cooled air flow is cooled through the semiconductor refrigerating sheets, and the cooled air flow enters the inside the wind box through the second pipeline.

Description

Heat dissipation mechanism for frequency converter

Technical Field

The utility model relates to the technical field of frequency converters, in particular to a heat dissipation mechanism for a frequency converter.

Background

The electric control components in the frequency converter comprise high-voltage electric control components and low-voltage electric control components, wherein the high-voltage electric control components comprise a circuit breaker, a transformer, a high-voltage sampling device and the like, the low-voltage electric control components comprise a central controller and the like, the electric control components realize various functions when the frequency converter operates, the frequency converter is a guarantee for stable, reliable and safe operation, the frequency converter is an electric control device for controlling an alternating current motor by applying a frequency conversion technology and a microelectronic technology and changing the working power frequency mode of the motor.

The existing heat dissipation mechanism of the frequency converter at present is basically composed of a frequency converter body, a protective shell, a plurality of fans, a motor, a ventilation opening and other parts, the motor is started when the existing heat dissipation mechanism of the frequency converter at present is used, the motor drives the fans to rotate, air is blown into the protective shell, and the heat dissipation and the temperature reduction of the frequency converter are realized through the circulation of the air on the surface of the frequency converter.

At present, most of existing frequency converter radiating mechanisms radiate heat through fans, when the frequency converter heats, the temperature of air around the frequency converter is high, and when the frequency converter is cooled and radiated through the fans by pumping the air around the frequency converter, the radiating effect on the frequency converter is not ideal due to the fact that the temperature of the air is high.

Disclosure of Invention

The utility model aims to provide a heat dissipation mechanism for a frequency converter, which has the characteristic of improving the heat dissipation effect on the frequency converter.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cooling mechanism for converter, includes the shell, the inside rear end face fixedly connected with of shell crosses the wind box, cross the front end of wind box and install the converter body, cross the lower terminal surface fixedly connected with of wind box and control the refrigeration box that distributes, two the inside of refrigeration box is equal fixedly connected with a plurality of evenly distributed's semiconductor refrigeration piece, the fan that is located two refrigeration box below is installed to the inside lower extreme of shell, two all communicate between the air intake department of fan and the left and right sides wall of shell has the air-supply line, two communicate between refrigeration box and two fans has first pipeline, two it has the second pipeline all to communicate between another lateral wall of refrigeration box and the up end of crossing the wind box.

In order to further radiate heat and cool the frequency converter body, the radiating mechanism for the frequency converter is preferable, the air passing box is a cuboid with an opening at the front, radiating fins which are fixedly connected with the rear end face of the frequency converter body and made of copper are arranged in the air passing box, and a plurality of radiating aluminum sheets which are uniformly distributed are fixedly connected to the other side wall of the radiating fins.

In order to continuously cool the frequency converter body, the heat dissipation mechanism for the frequency converter is preferable in the utility model, wherein the rear end face of the shell is provided with a plurality of air outlet holes which are distributed up and down, and the air outlet holes extend to the rear end face inside the air passing box.

In order to prevent dust from being accumulated in the shell and the air passing box, the heat dissipation mechanism for the frequency converter is preferably provided with two air inlet pipes, wherein one ends of the two air inlet pipes penetrate through the left inner side wall and the right inner side wall of the shell and are fixedly connected with filter screens made of non-woven fabric filter cotton.

In order to make the second pipelines more stable, as a heat dissipation mechanism for a frequency converter of the present utility model, preferably, a plurality of fixing plates distributed up and down are fixedly connected between the housing and the wind box, and both the second pipelines pass through the plurality of fixing plates.

In order to facilitate cleaning and maintenance of the inside of the shell, the heat dissipation mechanism for the frequency converter is preferable, wherein the front end of the shell is movably connected with a movable door, and the front side wall of the movable door is fixedly connected with a handle.

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

two fans start, the fan is inside through filter screen suction air-supply line, the impurity in the air is filtered to the filter screen, prevent shell and the interior deposition of wind box, then get into the refrigeration box inside through first pipeline, cool down the air current through the semiconductor refrigeration piece, the air current after the cooling gets into the wind box inside through the second pipeline, the fin absorbs the heat of converter body, then the fin gives the better heat dissipation aluminum sheet of heat dispersion with heat dissipation performance, the heat dissipation is gone out again by the heat dissipation aluminum sheet, when the air current after the cooling gets into the wind box inside through the second pipeline, the air current after the cooling contacts with fin and heat dissipation aluminum sheet, make fin and heat dissipation aluminum sheet dispel the heat fast, thereby carry out effectual heat dissipation cooling to the converter body, the air current after the cooling of converter body is through a plurality of ventholes exhaust wind box inside, thereby realize the circulation of air current, continuously cool down the converter body.

Drawings

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

FIG. 2 is a schematic diagram of a front view of the present utility model;

FIG. 3 is a left-hand structural schematic diagram of the present utility model;

in the figure: 1. a housing; 2. a wind box; 3. a refrigeration box; 4. a semiconductor refrigeration sheet; 5. a blower; 6. an air inlet pipe; 7. a first pipe; 8. a second pipe; 9. a transducer body; 10. a heat sink; 11. a heat radiation aluminum sheet; 12. an air outlet hole; 13. a filter screen; 14. a fixing plate; 15. a movable door; 16. a handle.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 3, a heat dissipation mechanism for a frequency converter includes a housing 1, a wind box 2 is fixedly connected to a rear end surface inside the housing 1, a frequency converter body 9 is installed at a front end of the wind box 2, a plurality of evenly distributed semiconductor refrigerating sheets 4 are fixedly connected to a lower end surface of the wind box 2, a fan 5 located below the two refrigerating boxes 3 is installed at an inner lower end of the housing 1, an air inlet pipe 6 is communicated between an air inlet of the two fans 5 and left and right inner side walls of the housing 1, a first pipeline 7 is communicated between the two refrigerating boxes 3 and the two fans 5, and a second pipeline 8 is communicated between another side wall of the two refrigerating boxes 3 and an upper end surface of the wind box 2.

In this embodiment: two fans 5 start, and fan 5 is with the air current through air-supply line 6 suction, then get into inside the refrigeration box 3 through first pipeline 7, cool down to the air current through semiconductor refrigeration piece 4, and the air current after the cooling gets into inside the wind box 2 through second pipeline 8 to cool down to converter body 9.

As a technical optimization scheme of the utility model, the wind box 2 is a cuboid with an opening at the front, a radiating fin 10 made of copper and fixedly connected with the rear end face of the frequency converter body 9 is arranged in the wind box 2, and a plurality of radiating aluminum sheets 11 which are uniformly distributed are fixedly connected with the other side wall of the radiating fin 10

In this embodiment: the radiating fin 10 absorbs heat of the frequency converter body 9, then the radiating fin 10 transfers heat to the radiating aluminum sheet 11 with better radiating performance, the radiating aluminum sheet 11 radiates heat, when cooled air flow enters the inside of the wind passing box 2 through the second pipeline 8, the cooled air flow contacts with the radiating fin 10 and the radiating aluminum sheet 11, so that the radiating fin 10 and the radiating aluminum sheet 11 radiate heat rapidly, and further radiating and cooling of the frequency converter body 9 are realized.

As a technical optimization scheme of the utility model, a plurality of air outlet holes 12 which are distributed up and down are formed in the rear end face of the shell 1, and the plurality of air outlet holes 12 extend to the rear end face inside the air passing box 2.

In this embodiment: the air flow cooled by the frequency converter body 9 is discharged into the air passing box 2 through the plurality of air outlet holes 12, so that circulation of the air flow is realized, and the frequency converter body 9 is continuously cooled.

As a technical optimization scheme of the utility model, one end of each of the two air inlet pipes 6 penetrates through the left and right inner side walls of the shell 1 and is fixedly connected with a filter screen 13 made of non-woven fabric filter cotton.

In this embodiment: the filter screen 13 can filter out impurities in the air, and prevents dust from being accumulated in the casing 1 and the wind box 2.

As a technical optimization scheme of the utility model, a plurality of fixing plates 14 which are distributed up and down are fixedly connected between the shell 1 and the wind passing box 2, and two second pipelines 8 penetrate through the plurality of fixing plates 14.

In this embodiment: the second pipe 8 can be fixed, so that the second pipe 8 is more stable.

As a technical optimization scheme of the utility model, the front end of the shell 1 is movably connected with a movable door 15, and the front side wall of the movable door 15 is fixedly connected with a handle 16.

In this embodiment: the movable door 15 facilitates cleaning and maintenance of the interior of the housing 1.

Working principle: two fans 5 start, fan 5 is inside through filter screen 13 suction air-supply line 6, filter screen 13 filters the impurity in the air, prevent shell 1 and cross inside dust of wind box 2, then get into inside refrigeration box 3 through first pipeline 7, cool down to the air current through semiconductor refrigeration piece 4, the air current after the cooling gets into inside wind box 2 through second pipeline 8, fin 10 absorbs the heat of converter body 9, then fin 10 gives the better heat dissipation aluminum sheet 11 of heat dispersion, again by heat dissipation aluminum sheet 11 with the heat dissipation, when the air current after the cooling gets into inside wind box 2 through second pipeline 8, through the air current after the cooling with fin 10 and heat dissipation aluminum sheet 11 contact, make fin 10 and heat dissipation aluminum sheet 11 dispel the heat fast, thereby carry out effectual heat dissipation cooling to converter body 9, the air current after the cooling down to converter body 9 is through a plurality of ventholes 12 exhaust wind box 2 inside, thereby realize the circulation of air current, continuously cool down to converter body 9.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. A heat dissipation mechanism for a frequency converter, including a casing (1), characterized in that: an air box (2) is fixedly connected to the rear end surface inside the casing (1), and the front end of the air box (2) is installed There is a frequency converter body (9), the lower end surface of the air box (2) is fixedly connected with refrigeration boxes (3) distributed on the left and right, and a plurality of evenly distributed refrigeration boxes (3) are fixedly connected inside the two refrigeration boxes (3). Semiconductor refrigeration piece (4), a fan (5) located below the two refrigeration boxes (3) is installed at the inner lower end of the casing (1), and the air inlets of the two fans (5) are in contact with the casing (1) ) are connected with an air inlet pipe (6) between the left and right inner walls, and a first pipe (7) is connected between the two refrigeration boxes (3) and the two fans (5). A second duct (8) is connected between the other side wall of (3) and the upper end surface of the air box (2). 2. A heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: the wind box (2) is a rectangular parallelepiped with a front opening, and the inside of the wind box (2) is provided with a heat sink that is connected to the frequency converter body. The rear end surface of (9) is fixedly connected to a heat sink (10) made of copper, and the other side wall of the heat sink (10) is fixedly connected to a plurality of evenly distributed heat dissipation aluminum fins (11). 3. A heat dissipation mechanism for a frequency converter according to claim 1, characterized in that the rear end surface of the housing (1) is provided with a plurality of air outlets (12) distributed up and down, and the plurality of air outlets (12) ) extends to the rear end surface inside the air box (2). 4. A heat dissipation mechanism for a frequency converter according to claim 1, characterized in that one end of the two air inlet pipes (6) penetrates the left and right inner walls of the housing (1) and is fixedly connected with a non-woven material. Cloth filter cotton filter (13). 5. A heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: a plurality of fixed plates (14) distributed up and down are fixedly connected between the housing (1) and the air box (2). Each of the second pipes (8) passes through a plurality of fixing plates (14). 6. A heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: a movable door (15) is movably connected to the front end of the housing (1), and the front side wall of the movable door (15) is fixedly connected. Has handle (16).