Heat dissipation mechanism for frequency converter

Abstract

The utility model discloses a heat dissipation mechanism for a frequency converter, which comprises a refrigeration mechanism, a transverse ventilation shell, a longitudinal ventilation shell, a fixed pipe and a heat dissipation shell, a fixed plate is arranged on the back of a frequency converter body, and the refrigeration mechanism is arranged on the back of the fixed plate; a heat dissipation fan is installed at a gas inlet of the refrigeration mechanism, a gas outlet of the refrigeration mechanism is connected with a heat dissipation shell through a transverse ventilation shell, a longitudinal ventilation shell and a fixing pipe in sequence, and the heat dissipation shell is fixed to one side of the heat dissipation window. The transverse telescopic shell used in the heat dissipation mechanism can move at one end of the transverse ventilation shell, so that the transverse length of the heat dissipation mechanism is conveniently changed, the longitudinal telescopic shell can move, so that the longitudinal length of the heat dissipation mechanism is changed, and through the movement of the transverse telescopic shell and the longitudinal telescopic shell, the heat dissipation efficiency is improved. Therefore, the heat dissipation mechanism can be used on frequency converters with different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a heat dissipation mechanism for frequency converters. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. It is mainly composed of rectification, filtering, inversion, braking unit, drive unit, detection unit, microprocessor unit, etc. The frequency converter has many protection functions, such as overcurrent, overvoltage, overload protection, etc. When the frequency converter is in use, various units inside will generate heat. It is far from enough to dissipate heat through the heat dissipation window alone, so a heat dissipation mechanism needs to be installed to assist in heat dissipation.

[0003] The defect of the existing heat dissipation mechanism for the inverter is that the patent document CN216218522U discloses a heat dissipation mechanism, "including a mounting plate, a filter frame, a support plate, an electric fan, etc., two mounting plates are provided, a filter frame is connected between the two mounting plates, support plates are provided on the upper and lower sides of the filter frame, an electric fan is installed between the two support plates, and the electric fan is located directly behind the filter frame. Air cooling is achieved by the electric fan, water cooling is achieved by the heat sink and the coolant, and the heat sink can quickly conduct the heat from the inverter, thereby achieving the purpose of improving the heat dissipation effect." The radiator in the patent document improves the heat dissipation effect through water cooling and heat sink, but due to the different sizes of the inverter, the heat dissipation mechanism can only be installed on inverters of one size, and the scope of use is limited, which has certain limitations. Utility Model Content

[0004] The purpose of the present application is to provide a heat dissipation mechanism for a frequency converter, so as to solve the technical problem that the heat dissipation mechanism proposed in the prior art can only be installed on a frequency converter of one size and the scope of use is limited.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation mechanism for a frequency converter, on a heat dissipation window and the back of a frequency converter body of the frequency converter, comprising a refrigeration mechanism, a transverse ventilation shell, a longitudinal ventilation shell, a fixed pipe and a heat dissipation shell, a fixed plate is installed on the back of the frequency converter body, and the refrigeration mechanism is installed on the back of the fixed plate; a heat dissipation fan is installed at the gas inlet of the refrigeration mechanism, and the gas outlet of the refrigeration mechanism is connected to the heat dissipation shell through the transverse ventilation shell, the longitudinal ventilation shell and the fixed pipe in sequence, and the heat dissipation shell is fixed on one side of the heat dissipation window;

[0006] A transverse telescopic shell is movably installed at the outlet end of the transverse ventilation shell, and a longitudinal telescopic shell is movably installed at the outlet end of the longitudinal ventilation shell; the inlet end of the longitudinal ventilation shell is fixedly connected to the outlet end of the transverse telescopic shell through a connecting shell, and the connecting shell is used to rotate the air path in the transverse telescopic shell by 90° to enter the longitudinal ventilation shell.

[0007] Preferably, a plurality of first fixing holes are opened on the top of the transverse telescopic shell, and bolts are installed in the first fixing holes to fix the transverse ventilation shell and the transverse telescopic shell.

[0008] Preferably, a second fixing hole is opened on the top of the longitudinal telescopic shell, and a bolt is installed in the second fixing hole to fix the longitudinal ventilation shell and the longitudinal telescopic shell.

[0009] Preferably, the fixing tube is installed through the inner side of the longitudinal telescopic shell, and a movable connecting groove is provided on the inner wall at the outlet of the fixing tube; a connecting ring is also provided at the outlet of the fixing tube, a protrusion is provided on the outer side of the connecting ring, and the protrusion is located in the connecting groove; a rotating connecting tube is provided on the inner side of the connecting ring.

[0010] Preferably, the connecting grooves are symmetrically arranged on the upper and lower sides of the inner wall of the fixing tube, and the protrusions of the connecting ring are symmetrically arranged on the upper and lower sides of the connecting ring.

[0011] Preferably, a blocking net is provided inside the heat dissipation shell, connecting plates are symmetrically installed on the top and bottom of the heat dissipation shell, and the heat dissipation shell is fixed to the outside of the heat dissipation window through the connecting plates. Preferably, a heat dissipation shell is installed at one end of the rotating connecting tube, a blocking net is provided inside the heat dissipation shell, connecting plates are symmetrically installed on the top and bottom of the heat dissipation shell, and the heat dissipation shell is fixed to one side of the heat dissipation window through the connecting plates.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, gas enters into the transverse telescopic shell through the transverse ventilation shell. The transverse telescopic shell can move at one end of the transverse ventilation shell, so as to change the transverse length of the heat dissipation mechanism. The longitudinal ventilation shell provides an installation position for the longitudinal telescopic shell. The longitudinal telescopic shell can be telescopically movable, so as to change the longitudinal length of the heat dissipation mechanism. Through the telescopic activities of the transverse telescopic shell and the longitudinal telescopic shell, the heat dissipation mechanism can be used on inverters of different sizes.

[0014] 2. The heat dissipation shell of the utility model is movably connected to the fixed tube through a connecting ring, so that the heat dissipation shell can be rotated relative to the fixed tube, thereby changing the use angle, making it convenient to use heat dissipation windows of different sizes, making the heat dissipation mechanism more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the transverse ventilation shell structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the heat dissipation shell structure of the utility model;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure at A;

[0019] Figure 5 This is a schematic diagram of the fixed pipe structure of the utility model.

[0020] In the figure: 1. inverter body; 101. heat dissipation window; 2. fixing plate; 201. refrigeration mechanism; 202. heat dissipation fan; 3. horizontal ventilation shell; 301. first fixing hole; 302. horizontal telescopic shell; 303. connecting shell; 4. longitudinal ventilation shell; 401. longitudinal telescopic shell; 402. second fixing hole; 5. fixing pipe; 501. movable connecting groove; 502. connecting ring; 503. rotating connecting pipe; 6. heat dissipation shell; 601. blocking net; 602. connecting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figures 1 to 5 The utility model provides an embodiment: a heat dissipation mechanism for a frequency converter, which is used to dissipate heat from the frequency converter; the heat dissipation mechanism is installed on a heat dissipation window 101 and the back of a frequency converter body 1 of the frequency converter, and the heat dissipation windows 101 are symmetrically arranged on both sides of the frequency converter body 1. The frequency converter body 1 dissipates heat through the heat dissipation windows 101 on both sides, so that the heat generated inside the frequency converter body 1 can be dissipated.

[0025] Specifically, the heat dissipation mechanism for the inverter includes a refrigeration mechanism 201, a transverse ventilation shell 3, a longitudinal ventilation shell 4, a fixed pipe 5 and a heat dissipation shell 6. The fixed plate 2 is installed on the back of the inverter body 1, and the refrigeration mechanism 201 is installed on the back of the fixed plate 2. The gas inlet on the back of the refrigeration mechanism 201 is installed with a heat dissipation fan 202. The gas outlet of the refrigeration mechanism 201 is connected to the heat dissipation shell 6 in sequence through the transverse ventilation shell 3, the longitudinal ventilation shell 4 and the fixed pipe 5; the heat dissipation shell 6 is fixed on one side of the heat dissipation window 101.

[0026] The inlet end of the transverse ventilation shell 3 is connected to the gas outlet of the refrigeration mechanism 201, and the outlet end of the transverse ventilation shell 3 is movably connected to the inlet end of the transverse telescopic shell 302. The top of the transverse telescopic shell 302 is provided with a plurality of first fixing holes 301. The transverse telescopic shell 302 can be telescopically movable in the outlet end of the transverse ventilation shell 3, so as to facilitate the change of the transverse length of the heat dissipation mechanism. The first fixing holes 301 are used to install bolts, which can fix the transverse ventilation shell 3 and the transverse telescopic shell 302, and then fix the transverse telescopic shell 302 to a specified transverse extension length to adapt to the transverse length of the inverter body 1.

[0027] The inlet end of the longitudinal ventilation shell 4 is fixedly connected to the outlet end of the transverse telescopic shell 302 through the connecting shell 303. The connecting shell 303 is used to rotate the gas path in the transverse telescopic shell 302 by 90 degrees, and then enter the longitudinal ventilation shell 4 arranged on the other side of the inverter body 1. The connecting shell 303 plays a connecting role, so that the gas can enter the longitudinal ventilation shell 4.

[0028] The outlet end of the longitudinal ventilation shell 4 is movably connected to the longitudinal telescopic shell 401, and a second fixing hole 402 is provided on the top of the longitudinal telescopic shell 401. The longitudinal telescopic shell 40 can be telescopically movable in the outlet end of the longitudinal ventilation shell 4, so as to facilitate changing the longitudinal length of the heat dissipation mechanism. The second fixing hole 402 is used to install bolts, which can fix the longitudinal ventilation shell 4 and the longitudinal telescopic shell 401, and then fix the longitudinal telescopic shell 401 to a specified longitudinal extension length to adapt to the longitudinal length of the inverter body 1.

[0029] The connection structures between the transverse ventilation shell 3 and the transverse telescopic shell 302, and between the longitudinal ventilation shell 4 and the longitudinal telescopic shell 401 are similar, and they can be replaced as a whole during actual assembly.

[0030] A fixed tube 5 is installed through the inner side of the longitudinal telescopic shell 401, and the outlet of the fixed tube 5 is connected to the inlet end of the heat dissipation shell 6 through a rotating connecting tube 503. A movable connecting groove 501 is provided on the inner wall at the outlet of the fixed tube 5, and the connecting grooves 501 are symmetrically arranged on the upper and lower sides of the inner wall of the fixed tube 5; a connecting ring 502 is also provided at the outlet of the fixed tube 5, and protrusions are provided at the upper and lower positions of the outer side of the connecting ring 502, and the protrusions are located in the connecting grooves 501, so that the connecting ring 502 can be rotated relative to the fixed tube 5.

[0031] A rotating connecting tube 503 is provided on the inner side of the connecting ring 502. The rotating connecting tube 503 is a hose, which passes through the connecting ring 502, and the inlet end is located in the fixed tube 5, and the outlet end is connected to the air inlet of the heat dissipation shell 6. The gas used for heat dissipation enters the heat dissipation shell 6 through the fixed tube 5 and the rotating connecting tube 503. The internal channel of the connecting ring 502 is an L-shaped structure, which can make the rotating connecting tube 503 bend, thereby realizing the bending of the gas path. The rotation of the connecting ring 502 can drive the rotation of the rotating connecting tube 503, so that the rotating connecting tube 503 can rotate relative to the fixed tube 5, and the rotation angle is between -10° and 10°.

[0032] A blocking net 601 is provided inside the heat dissipation shell 6 to prevent dust and other debris in the gas (air) used for heat dissipation from entering the inverter. Connecting plates 602 are symmetrically installed on the top and bottom of the heat dissipation shell 6, and the heat dissipation shell 6 is fixed to the outside of the heat dissipation window 101 through the connecting plates 602, so that the gas (air) used for heat dissipation can accurately enter the interior of the inverter for heat dissipation.

[0033] Since the heat dissipation shell 6 is movably connected to the fixed tube 5 by rotating the connecting tube 503 , the heat dissipation shell 6 can be rotated to change the use angle, which is convenient for using heat dissipation windows 101 of different sizes.

[0034] The inverter body 1 dissipates heat through the heat dissipation windows 101 on both sides, so that the heat generated inside the inverter body 1 can be dissipated. In order to enable the inverter to dissipate heat better, the utility model installs an auxiliary heat dissipation mechanism on the back of the inverter through the fixing plate 2, and the heat dissipation fan 202 is operated to send the gas (air) used for heat dissipation into the refrigeration mechanism 201. After the refrigeration mechanism 201 is powered on, the internal compressor, condenser, throttle, and evaporator cooperate to lower the internal temperature, so that the temperature of the passing gas is reduced, and the gas enters the inverter body 1 through the horizontal ventilation shell 3, the longitudinal ventilation shell 4, the fixing pipe 5, the heat dissipation shell 6, and the heat dissipation window 101 in turn, so as to enhance the heat dissipation of the inverter.

[0035] The working principle of the utility model is as follows: before using the heat dissipation mechanism for the frequency converter of the utility model, it should be checked whether there are any problems that affect the use of the heat dissipation mechanism for the frequency converter. First, the heat dissipation mechanism is fixed to the outside of the frequency converter through the fixing plate 2, and the use size of the heat dissipation mechanism can be adjusted by using the transverse telescopic shell 302 and the longitudinal telescopic shell 401. After the use size is adjusted, the heat dissipation shell 6 is fixed to the outside of the heat dissipation window 101, so that the gas used for heat dissipation can enter the interior of the frequency converter body 1 through the heat dissipation window 101 to dissipate heat inside.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A heat dissipation mechanism for a frequency converter, comprising a heat dissipation window (101) and a back side of a frequency converter body of the frequency converter, comprising a refrigeration mechanism (201), a transverse ventilation shell (3), a longitudinal ventilation shell (4), a fixing pipe (5) and a heat dissipation shell (6), characterized in that: A fixing plate (2) is installed on the back of the inverter body (1), and the refrigeration mechanism (201) is installed on the back of the fixing plate (2); a heat dissipation fan (202) is installed at the gas inlet of the refrigeration mechanism (201), and the gas outlet of the refrigeration mechanism (201) is connected to the heat dissipation shell (6) through a transverse ventilation shell (3), a longitudinal ventilation shell (4) and a fixing pipe (5) in sequence, and the heat dissipation shell (6) is fixed on one side of the heat dissipation window (101); A transverse telescopic shell (302) is movably mounted on the outlet end of the transverse ventilation shell (3), and a longitudinal telescopic shell (401) is movably mounted on the outlet end of the longitudinal ventilation shell (4); the inlet end of the longitudinal ventilation shell (4) is fixedly connected to the outlet end of the transverse telescopic shell (302) via a connecting shell (303), and the connecting shell (303) is used to rotate the air path in the transverse telescopic shell (302) by 90 degrees to enter the longitudinal ventilation shell (4).

2. The heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: A plurality of first fixing holes (301) are provided on the top of the transverse telescopic shell (302), and bolts are installed in the first fixing holes (301) to fix the transverse ventilation shell (3) and the transverse telescopic shell (302).

3. The heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: A second fixing hole (402) is provided at the top of the longitudinal telescopic shell (401), and a bolt is installed in the second fixing hole (402) to fix the longitudinal ventilation shell (4) and the longitudinal telescopic shell (401).

4. The heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: The fixing tube (5) is installed through the inner side of the longitudinal telescopic shell (401), and a movable connection groove (501) is provided on the inner wall at the outlet of the fixing tube (5); a connecting ring (502) is also provided at the outlet of the fixing tube (5), and a protrusion is provided on the outer side of the connecting ring (502), and the protrusion is located in the connecting groove (501); a rotating connecting tube (503) is provided on the inner side of the connecting ring (502).

5. The heat dissipation mechanism for a frequency converter according to claim 4, characterized in that: The connection groove (501) is symmetrically arranged on the upper and lower sides of the inner wall of the fixing tube (5), and the protrusion of the connection ring (502) is symmetrically arranged on the upper and lower sides of the connection ring (502).

6. The heat dissipation mechanism for a frequency converter according to claim 1, characterized in that: A blocking net (601) is arranged inside the heat dissipation shell (6), connecting plates (602) are symmetrically installed on the top and bottom of the heat dissipation shell (6), and the heat dissipation shell (6) is fixed to the outside of the heat dissipation window (101) through the connecting plates (602).

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