CN217563518U

CN217563518U - Frequency converter protection device

Info

Publication number: CN217563518U
Application number: CN202221592819.8U
Authority: CN
Inventors: 崔存青; 陈存霞; 张伟
Original assignee: Shandong Jinhaixin Electrical Equipment Co ltd
Current assignee: Shandong Jinhaixin Electrical Equipment Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-10-11
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses a frequency converter protection device, which comprises a frequency converter body, a semiconductor refrigerator and a U-shaped shell, wherein a circulating air cooling device is arranged in the U-shaped shell, and the cooling air cavity is cooled by the circulating air cooling device; the outer wall of the cold air cavity is provided with a cold guide sheet, the cold guide sheet is connected with a cold guide plate, two side walls of the frequency converter body are provided with U-shaped limiting grooves matched with the cold guide plate, a plurality of cold guide blocks are arranged in the U-shaped limiting grooves in the two side walls of the frequency converter body, and the cold air cavity can be in heat transfer with the inside of the frequency converter body through the cold guide sheet, the cold guide plate and the cold guide blocks so as to cool the inside of the frequency converter body; a temperature probe is arranged on the first L-shaped shell, an opening matched with the temperature probe is formed in the top of the frequency converter body, and the temperature probe extends into the frequency converter body from the opening; the utility model discloses can carry out overheat protection to the converter, prevent that overheated components and parts damage in leading to the converter.

Description

Frequency converter protection device

Technical Field

The utility model relates to a converter protection technical field, concretely relates to converter protection device.

Background

The frequency converter is a power control device which utilizes a frequency conversion technology and a microelectronic technology and achieves the purpose of controlling an alternating current motor by changing the frequency mode of a working power supply of the motor. However, the existing frequency converter can generate a large amount of heat in the using process, and if the frequency converter works in a high-temperature environment for a long time, internal elements are damaged, and the service life is shortened.

SUMMERY OF THE UTILITY MODEL

To the defects in the prior art, the utility model provides a

The utility model discloses a realize through following technical scheme:

a frequency converter protection device comprises a frequency converter body, a semiconductor refrigerator and a U-shaped shell, wherein the U-shaped shell is formed by slidably connecting a first L-shaped shell and a second L-shaped shell, the first L-shaped shell and the second L-shaped shell comprise a transverse cavity and a longitudinal cavity, a shell is arranged in the transverse cavity of the first L-shaped shell, a refrigerating cavity is arranged in the shell, the semiconductor refrigerator is arranged in the shell, the cold end of the semiconductor refrigerator extends into the refrigerating cavity, cold guide fans are arranged on two sides of the cold end of the semiconductor refrigerator, tee joints connected with the refrigerating cavity are arranged on two sides of the shell, cold air cavities are arranged in the longitudinal cavities of the first L-shaped shell and the second L-shaped shell, baffles are arranged in the cold air cavities, vent holes are formed between the baffles and one ends of the cold air cavities, air inlets and air outlets are symmetrically arranged on the other ends of the cold air cavities, the air inlets and the air outlets are respectively located on two sides of the baffles, and are respectively connected with the tee joints on two sides of the refrigerating cavity through pipelines; the outer wall of the cold air cavity is provided with a cold guide sheet, the cold guide sheet is connected with a cold guide plate, two side walls of the frequency converter body are provided with U-shaped limiting grooves matched with the cold guide plate, and a plurality of cold guide blocks are arranged in the U-shaped limiting grooves on the two side walls of the frequency converter body; the temperature probe is arranged on the first L-shaped shell, an opening matched with the temperature probe is formed in the top of the frequency converter body, and the temperature probe extends into the frequency converter body from the opening.

Preferably, the horizontal cavity of the second L-shaped shell is symmetrically provided with slide bars, the tail ends of the slide bars are provided with limit blocks, and the horizontal cavity of the first L-shaped shell is provided with guide holes matched with the slide bars.

Preferably, the pipeline in the second L-shaped shell is connected with the tee joint through a telescopic pipe, a groove is formed in a transverse cavity of the second L-shaped shell, and the telescopic pipe is located in the groove.

Preferably, a plurality of through holes are formed in the U-shaped limiting grooves in the two side walls of the frequency converter body along the linear array, and the cold guide blocks are installed in the through holes.

Preferably, the bottom of the longitudinal cavity of the first L-shaped shell and the bottom of the longitudinal cavity of the second L-shaped shell are provided with notches matched with the U-shaped limiting grooves.

The beneficial effects of the utility model are embodied in: the utility model can keep a lower temperature in the cold air cavity through circulating cold air, and can realize the cooling of the frequency converter by heat transfer through the cold guide sheet, the cold guide plate and the cold guide block, thereby preventing the service life of components and parts from being influenced by overhigh temperature in the frequency converter; the first L-shaped bracket and the second L-shaped bracket of the utility model are connected in a sliding way and can be suitable for frequency converters with different specifications; the utility model discloses a circulation forced air cooling has reduced the waste of resource.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a front view of the present invention.

Fig. 2 is a sectional view taken along the line a of fig. 1.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is a sectional view taken along line B of fig. 1.

Fig. 5 is a top view of the present invention.

Fig. 6 is a sectional view taken along the line a in fig. 5.

Fig. 7 is an isometric view of a transducer body.

In the attached drawing, 1, a frequency converter body, 2, a first L-shaped shell, 3, a second L-shaped shell, 4, a shell, 5, a refrigeration cavity, 6, a semiconductor refrigerator, 7, a cold guide fan, 8, a tee joint, 9, a pipeline, 10, an extension pipe, 11, a groove, 12, a slide bar, 13, a transverse cavity, 14, a longitudinal cavity, 15, a cold air cavity, 16, a baffle plate, 17, a cold guide sheet, 18, a cold guide plate, 19, a U-shaped limiting groove, 20, a cold guide block, 21, a temperature probe, 22 and an opening.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention is described in detail below with reference to the accompanying drawings: the utility model discloses a frequency converter protection device, including frequency converter body 1, semiconductor cooler 6 and U type casing, U type casing is formed by first L type casing 2 and the sliding connection of second L type casing 3, and first L type casing 2 and second L type casing 3 include horizontal chamber 13 and vertical chamber 14, are provided with shell 4 in the horizontal chamber 13 of first L type casing 2, are equipped with refrigeration chamber 5 in the shell 4, are provided with semiconductor cooler 6 in the shell 4, and the cold junction of semiconductor cooler 6 stretches into refrigeration chamber 5, and the both sides of semiconductor cooler 6 cold junction are provided with cold guide fan 7, the both sides of shell 4 are provided with the tee bend 8 that links to each other with the refrigeration chamber, be provided with cold air chamber 15 in the vertical chamber 14 of first L type casing 2 and second L type casing 3, are equipped with baffle 16 in the cold air chamber 15, are equipped with the blow vent between baffle 16 and the one end of cold air chamber 15, and this setting is favorable to the discharge of the hot gas in cold air chamber 15, and the other end symmetry of air inlet and baffle 16 are equipped with air outlet, and the both sides of baffle 16 are located respectively through the tee bend 8 that air outlet 9 links to each other side of air chamber 5; the outer wall of the cold air cavity 15 is provided with a cold guide sheet 17, the cold guide sheet 17 is connected with a cold guide plate 18, two side walls of the frequency converter body 1 are provided with U-shaped limiting grooves 19 matched with the cold guide plate 18, the U-shaped limiting grooves 19 on the two side walls of the frequency converter body 1 are internally provided with a plurality of cold guide blocks 20, and the cold guide blocks 20 can accelerate heat transfer; the temperature probe 21 is arranged on the first L-shaped shell 2, the opening 22 matched with the temperature probe 21 is formed in the top of the frequency converter body 1, and the temperature probe 21 extends into the frequency converter body 1 from the opening 22.

The horizontal cavity 13 of the second L-shaped shell 3 is symmetrically provided with slide bars 12, the tail ends of the slide bars 12 are provided with limit blocks, and the horizontal cavity 13 of the first L-shaped shell 2 is provided with guide holes matched with the slide bars 12.

The pipeline 9 in the second L-shaped shell 3 is connected with the tee joint 8 through the telescopic pipe 10, the transverse cavity 13 of the second L-shaped shell 3 is provided with a groove 11, and the telescopic pipe 10 is positioned in the groove 11.

A plurality of through holes are formed in the U-shaped limiting grooves 19 on the two side walls of the frequency converter body 1 along the line in an array mode, and cold conducting blocks 20 are installed in the through holes.

The bottom of the longitudinal cavity 14 of the first L-shaped shell 2 and the second L-shaped shell 3 is provided with a notch 23 matched with the U-shaped limiting groove 19.

The semiconductor refrigerator of the utility model can be controlled by a controller which takes a single chip microcomputer as a core, and the controller is respectively connected with a temperature probe 21, a semiconductor refrigerator 6 and a cold guide fan 7; when the device is used, the second L-shaped shell 3 is pulled out to a proper length, the temperature probe 21 is aligned with the opening 22 of the frequency converter body 1, the cold guide plate 18 is aligned with the U-shaped limiting groove 19, then the cold guide plate 18 is pushed into the U-shaped limiting groove 19, and the temperature probe 21 is inserted into the frequency converter body 1; when the temperature probe 21 detects that the temperature in the frequency converter body 1 is higher than the preset value, the controller controls the semiconductor refrigerator 6 and the cold guide fan 7 to be started, the circulating cold air can reduce the temperature of the air in the cold air cavity 15, then the temperature in the frequency converter body 1 is reduced through the cold guide sheet 17, the cold guide plate 18 and the cold guide block 20, and when the temperature probe 21 detects that the temperature in the frequency converter body 1 is lower than the preset value, the controller can control the semiconductor refrigerator 6 and the cold guide fan 7 to stop working.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a converter protection device, includes converter body (1), semiconductor cooler (6) and U type casing, its characterized in that: the U-shaped shell is formed by slidably connecting a first L-shaped shell (2) and a second L-shaped shell (3), the first L-shaped shell (2) and the second L-shaped shell (3) comprise a transverse cavity (13) and a longitudinal cavity (14), a shell (4) is arranged in the transverse cavity (13) of the first L-shaped shell (2), a refrigerating cavity (5) is arranged in the shell (4), a semiconductor refrigerator (6) is arranged in the shell (4), the cold end of the semiconductor refrigerator (6) extends into the refrigerating cavity (5), cold guide fans (7) are arranged on two sides of the cold end of the semiconductor refrigerator (6), three-way pipes (8) connected with the refrigerating cavity are arranged on two sides of the shell (4), a cold air cavity (15) is arranged in the longitudinal cavity (14) of the first L-shaped shell (2) and the second L-shaped shell (3), baffles (16) are arranged in the cold air cavity (15), air vents (16) are arranged between the baffles (16) and one end of the cold air cavity (15), the other end of the cold air cavity (15) is symmetrically provided with an air inlet and an air outlet, and the baffles (9) are respectively connected with two sides of the refrigerating cavity (8) through pipelines; the outer wall of the cold air cavity (15) is provided with a cold guide sheet (17), the cold guide sheet (17) is connected with a cold guide plate (18), two side walls of the frequency converter body (1) are provided with U-shaped limiting grooves (19) matched with the cold guide plate (18), and a plurality of cold guide blocks (20) are arranged in the U-shaped limiting grooves (19) on the two side walls of the frequency converter body (1); be equipped with temperature probe (21) on first L type casing (2), the top of converter body (1) is equipped with opening (22) with temperature probe (21) matched with, and temperature probe (21) are stretched into in converter body (1) by opening (22).

2. The frequency converter protection device of claim 1, wherein: the sliding rod (12) is symmetrically arranged on a transverse cavity (13) of the second L-shaped shell (3), a limiting block is arranged at the tail end of the sliding rod (12), and a guide hole matched with the sliding rod (12) is formed in the transverse cavity (13) of the first L-shaped shell (2).

3. The frequency converter protection device of claim 1, wherein: a pipeline (9) in the second L-shaped shell (3) is connected with a tee joint (8) through an extension pipe (10), a transverse cavity (13) of the second L-shaped shell (3) is provided with a groove (11), and the extension pipe (10) is positioned in the groove (11).

4. The frequency converter protection device of claim 1, wherein: a plurality of through holes are formed in the U-shaped limiting grooves (19) in the two side walls of the frequency converter body (1) along the line in an array mode, and cold conducting blocks (20) are installed in the through holes.

5. The frequency converter protection device of claim 1, wherein: and notches (23) matched with the U-shaped limiting grooves (19) are formed at the bottoms of the longitudinal cavities (14) of the first L-shaped shell (2) and the second L-shaped shell (3).