Frequency converter heat dissipation device

Abstract

The utility model discloses a frequency converter heat dissipation device which comprises an air inlet assembly, a filter assembly, an air outlet pipe, an air supply fan, an air draft fan, a first temperature sensor and a second temperature sensor, the air inlet assembly comprises a main air inlet pipe, a first air inlet pipe and a second air inlet pipe, one end of the main air inlet pipe is communicated with an air inlet, and the other end of the main air inlet pipe is communicated with an air outlet. One end of the first air inlet pipe is communicated with the other end of the main air inlet pipe, the other end of the first air inlet pipe extends out of a room where the frequency converter is located so as to be communicated with the atmosphere, one end of the second air inlet pipe is communicated with the other end of the main air inlet pipe, and the other end of the second air inlet pipe is connected with the refrigerating device so as to guide airflow provided by the refrigerating device into the main air inlet pipe. According to the frequency converter heat dissipation device provided by the embodiment of the utility model, the cooling effect on the frequency converter is good, and the air source for cooling can be flexibly selected according to the numerical values of the first temperature sensor and the second temperature sensor.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation, and in particular to a heat dissipation device for a frequency converter. Background Art

[0002] As a common electrical device, the inverter generates a lot of heat during operation due to its large working current. According to statistics, the failure rate of the inverter increases exponentially with the increase of temperature. If the ambient temperature increases by 10 degrees, the service life of the inverter will be halved.

[0003] In the related art, a heat dissipation window is provided on the side wall or the top wall of the inverter door to achieve the purpose of heat dissipation, but it has certain requirements on the ventilation effect of the external environment. When the inverter is installed in a location with poor ventilation, such as a closed aisle or a corner of a room, relying solely on the heat dissipation window cannot achieve a good heat dissipation effect, resulting in poor cooling effect of the inverter, making the inverter prone to failure. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model provides a frequency converter heat dissipation device.

[0005] The inverter heat dissipation device of the utility model embodiment comprises a box body, the top of the box body is provided with an air inlet, the bottom of the box body is provided with an air outlet, and the inverter heat dissipation device comprises:

[0006] An air inlet assembly, the air inlet assembly comprising a main air inlet duct, a first air inlet duct and a second air inlet duct, one end of the main air inlet duct being connected to the air inlet, one end of the first air inlet duct being connected to the other end of the main air inlet duct, the other end of the first air inlet duct extending out of the room where the inverter is located so as to be connected to the atmosphere, one end of the second air inlet duct being connected to the other end of the main air inlet duct, the other end of the second air inlet duct being connected to a refrigeration device so as to guide the airflow provided by the refrigeration device into the main air inlet duct;

[0007] A filter assembly, wherein the filter assembly is arranged in the main air inlet duct;

[0008] An air outlet pipe, one end of which is connected to the air outlet, and the other end of which extends out of the room where the frequency converter is located;

[0009] An air supply fan, wherein the air supply fan is arranged in the air inlet assembly;

[0010] An exhaust fan, the exhaust fan is arranged in the air outlet pipe so as to extract the air flow in the box;

[0011] a first temperature sensor, wherein the first temperature sensor is disposed in the box;

[0012] A second temperature sensor is disposed outside the box.

[0013] The inverter heat dissipation device of the embodiment of the utility model can cool the inverter by setting an air inlet component, an air outlet duct, an air supply fan and an exhaust fan, etc., thereby improving the cooling effect of the inverter, and can flexibly select the cooling wind source according to the values ​​of the first temperature sensor and the second temperature sensor.

[0014] In some embodiments, the inverter heat dissipation device further includes a controller, and the controller is electrically connected to each of the supply fan, the exhaust fan, the refrigeration device, the first temperature sensor, and the second temperature sensor.

[0015] In some embodiments, the air supply blower is provided in plurality, and the main air inlet duct, the first air inlet duct and the second air inlet duct are all provided with the air supply blower.

[0016] In some embodiments, the main air inlet duct includes a first side wall, a second side wall, a bottom wall and a top wall, the first side wall is provided with an opening, the bottom wall is provided with a slide groove, the slide groove extends from the first side wall to the second side wall, and the filter assembly can move along the slide groove so as to enter and exit the main air inlet duct through the opening.

[0017] In some embodiments, the filter assembly comprises:

[0018] A frame, the frame comprising a bottom plate, the bottom plate being mountable in the slide slot and movable along the slide slot;

[0019] A filter screen is detachably arranged on the frame.

[0020] In some embodiments, the inverter heat dissipation device also includes a limit assembly, which is arranged on the outside of the main air inlet duct and connected to the bottom wall. A groove is provided on a side of the bottom plate adjacent to the bottom wall, and a through hole is provided on an end of the slide groove adjacent to the inlet. The limit assembly includes a protrusion, which is movable along the axial direction of the through hole, and the protrusion has a locking position and a release position. In the locking position, the protrusion can pass through the through hole into the groove, and in the release position, the protrusion can be separated from the groove.

[0021] In some embodiments, the limiting assembly also includes a shell, a limiting cavity is provided in the shell, the limiting cavity is open at one end adjacent to the through hole, a baffle is provided at the other end of the limiting cavity, a first hole is provided on the baffle, and the protrusion is movable in the limiting cavity.

[0022] In some embodiments, the limiting assembly also includes a pull rod, which includes a gripping portion and a rod portion, the gripping portion is arranged outside the limiting cavity, one end of the rod portion is connected to the protrusion, and the other end of the rod portion extends out of the first hole and is connected to the gripping portion.

[0023] In some embodiments, the limiting assembly also includes a first elastic member, which is sleeved on the outer peripheral side of the pull rod, one end of the first elastic member abuts against the baffle, and the other end of the first elastic member is connected to the protrusion, and the first elastic member has a force that causes the protrusion to move toward the groove.

[0024] In some embodiments, the filter assembly also includes a dehumidification component, which is detachably mounted on the frame and spaced apart from the filter screen. The dehumidification component includes a mounting frame and a dehumidification cylinder, which is detachably mounted on the frame and provided with a plurality of mounting holes. The axial direction of the mounting hole is consistent with the extension direction of the main air inlet pipe. The dehumidification cylinder is detachably mounted in the mounting hole, and the dehumidification cylinder is filled with a dehumidifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a frequency converter heat dissipation device according to an embodiment of the utility model.

[0026] Figure 2 It is a schematic diagram of the internal structure of the air inlet assembly of the inverter heat dissipation device according to an embodiment of the utility model.

[0027] Figure 3 It is a structural schematic diagram of a filter assembly of a frequency converter heat dissipation device according to an embodiment of the utility model.

[0028] Figure 4 It is a cross-sectional view of a filter assembly of a frequency converter heat dissipation device according to an embodiment of the utility model.

[0029] Figure 5 It is a structural schematic diagram of a limiting component of a frequency converter heat sink according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] Air inlet assembly 1; main air inlet duct 10; bottom wall 101; first air inlet duct 11; first duct 111; second air inlet duct 12; refrigeration device 121; air supply fan 13; air outlet duct 2; filter assembly 3; frame 31; bottom plate 311; filter screen 32; dehumidification component 33; mounting bracket 34; mounting hole 35; handle 34; limit assembly 4; shell 40; bump 41; chamfer 411; baffle 42; first hole 421; pull rod 43; gripping portion 431; rod portion 432; first elastic member 44. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0033] The inverter heat dissipation device of the embodiment of the utility model is suitable for the inverter. The inverter includes a box body. The top of the box body is provided with an air inlet, the bottom of the box body is provided with an air outlet, and the air outlet is arranged on the side wall of the box body to avoid affecting the opening and closing of the box door panel.

[0034] Optionally, if heat dissipation windows are provided on the top and the bottom of the inverter housing, air inlets and air outlets may be provided at the locations of the heat dissipation windows.

[0035] like Figure 1-5 As shown, the inverter heat dissipation device of the embodiment of the utility model includes an air inlet component 1, an air outlet pipe 2, an air supply fan 13 and an exhaust fan, a first temperature sensor (not shown in the figure), a second temperature sensor (not shown in the figure) and a filter component 3.

[0036] The air inlet assembly 1 includes a main air inlet duct 10, a first air inlet duct 11 and a second air inlet duct 12. One end of the main air inlet duct 10 is connected to the air inlet, one end of the first air inlet duct 11 is connected to the other end of the main air inlet duct 10, and the other end of the first air inlet duct 11 extends out of the room where the inverter is located so as to be connected to the atmosphere; one end of the second air inlet duct 12 is connected to the other end of the main air inlet duct 10, and the other end of the second air inlet duct 12 is connected to the refrigeration device 121 so as to introduce the airflow provided by the refrigeration device 121 into the main air inlet duct 10.

[0037] Optionally, valves are provided at the inlet end of the first air inlet pipe 11 and the inlet end of the second air inlet pipe 12, so that the first air inlet pipe 11 and the second air inlet pipe 12 can be opened and closed as needed. The refrigeration device 121 can be an air conditioner, and the second air inlet pipe 12 is connected to the air outlet duct of the air conditioner. Alternatively, the refrigeration device 121 is other devices that can provide cold air.

[0038] One end of the air outlet pipe 2 is connected to the air outlet, and the other end of the air outlet pipe 2 extends out of the room where the frequency converter is located.

[0039] The filter assembly 3 is arranged in the main air inlet pipe 10, and the filter assembly 3 is used to filter particulate matter in the airflow, or the filter assembly 3 is used to filter particulate matter and small droplets in the airflow.

[0040] The air supply fan 13 is arranged in the air inlet assembly 1 to send the air flow outside the room where the inverter is located into the inverter box, or to send the cold air provided by the refrigeration device 121 into the inverter box.

[0041] The exhaust fan is arranged in the air outlet pipe 2 so as to extract the air flow in the box.

[0042] The first temperature sensor is arranged in the box body, and is used for detecting the temperature in the box body.

[0043] A second temperature sensor is disposed outside the box.

[0044] The inverter heat sink of the embodiment of the utility model can be regulated according to the first preset value and the second preset value when working. For example, the first preset value is a critical value set according to the change of ambient temperature. For example, in winter or spring and autumn, the ambient temperature generally does not exceed 25 degrees, and in summer, the ambient temperature generally does not fall below 25 degrees. Therefore, the first preset value can be set to 25 degrees.

[0045] According to the comparison between the temperature outside the cabinet detected by the second temperature sensor and the first preset value, if the value of the second temperature sensor is less than the first preset value, the first air inlet pipe 11 is connected to the outdoor atmosphere, and the valve at the inlet end of the second air inlet pipe 12 is closed. The temperature of the airflow drawn into the first air inlet pipe 11 from the outside meets the cooling demand of the inverter. If the value of the second temperature sensor is greater than the first preset value, the outdoor temperature is high and the airflow cooling effect is relatively poor, then the first air inlet pipe 11 is closed, the second air inlet pipe 12 is opened, and the refrigeration device 121 is started to work, so that the cold air provided by the refrigeration device 121 is introduced into the cabinet of the inverter to cool the inverter.

[0046] The second preset value is set according to the operating temperature of the inverter. When the temperature inside the box is higher than the warning value, the failure rate of the inverter will increase. For example, when the operating temperature of the inverter is between 25 degrees and 50 degrees, the second preset value is set to 40 degrees.

[0047] When the value detected by the first temperature sensor is less than the second preset value, the inverter heat dissipation device remains in its original state. When the value detected by the first temperature sensor is greater than the second preset value, if the refrigeration device 121 is not started, the refrigeration device 121 is started, and then the air inlet fan is turned off. If the refrigeration device 121 is already started, the operating power of the refrigeration device 121 is increased.

[0048] Considering that it takes a certain amount of time for the refrigeration device 121 to achieve a cooling effect after being started, a third temperature sensor can be set in the first air inlet duct 11, and a fourth temperature sensor can be set in the second air inlet duct 12. After starting the refrigeration device 121, when the value of the third temperature sensor is greater than the value of the fourth temperature sensor, the air inlet fan is turned off.

[0049] Optionally, an alarm is provided outside the box, and a danger value is also set for the first temperature sensor. When the value of the first temperature sensor reaches the danger value, for example, the danger value is 50 degrees, the alarm is activated to remind the operator to shut down the inverter in time to prevent the inverter from continuing to work in high temperature.

[0050] Optionally, the first preset value ranges from 25 degrees to 30 degrees, for example, 25 degrees, 27 degrees, or 30 degrees.

[0051] The inverter heat dissipation device of the embodiment of the utility model can cool the inverter by setting an air inlet component 1, an air outlet duct 2, an air supply fan 13 and an exhaust fan, etc., and can flexibly select the cooling air source according to the values ​​of the first temperature sensor and the second temperature sensor.

[0052] The inverter heat dissipation device provided by the embodiment of the utility model uses outdoor airflow to cool down when the ambient temperature is low, which can save energy compared with the solution of using only the cooling device for cooling. When the ambient temperature is high, the refrigeration device 121 is used for cooling, which has a better cooling effect than the solution of using only the fan for cooling.

[0053] In addition, a filter assembly 3 is arranged in the main air inlet pipe 10, so that the airflow entering the box can be filtered, so that dust and other particles in the airflow cannot enter the box of the inverter, thereby preventing external dust from adhering to electrical equipment and affecting the heat dissipation of the inverter.

[0054] In the related art, the heat dissipation system can only guide the airflow in the inverter box to the outside of the inverter, but the high-temperature airflow still stays outside the room where the inverter is located, thereby increasing the temperature of the room where the inverter is located, which is not conducive to cooling the inverter. The air outlet duct 2 provided in the utility model can guide the airflow in the inverter to the outside of the room, thereby avoiding the high-temperature airflow from gathering in the room where the inverter is located, thereby improving the cooling efficiency.

[0055] Optionally, the air inlet assembly 1 and the air outlet duct 2 may be arranged according to the room structure, for example, the air inlet assembly 1 and the air outlet duct 2 are both arranged along the wall.

[0056] In some embodiments, the inverter heat dissipation device further includes a controller, which is electrically connected to each of the supply fan 13, the exhaust fan, the refrigeration device 121, the first temperature sensor, and the second temperature sensor.

[0057] In the inverter heat sink of the embodiment of the utility model, the first temperature sensor and the second temperature sensor transmit the detected values ​​to the controller, and the controller controls the operation of the corresponding components according to the received values ​​and the first preset value, the second preset value and the danger value, etc. Therefore, the inverter heat sink has a high degree of automation.

[0058] In some embodiments, a plurality of air supply fans 13 are provided, and air supply fans 13 are provided in the main air inlet pipe 10, the first air inlet pipe 11, and the second air inlet pipe 12. Therefore, the inverter heat dissipation device of the utility model embodiment can increase the air flow rate in the air inlet component 1 and the air outlet component, thereby increasing the air flow rate in the inverter, thereby allowing the air flow after heat exchange with the inverter to flow away quickly, so as to improve the cooling efficiency of the inverter heat dissipation device.

[0059] In some embodiments, Figure 2 As shown, a first tube 111 is provided in the first air inlet pipe 11, and water can flow through the first tube 111. Both ends of the first tube 111 extend to the outside of the first air inlet pipe 11 and are connected to the cold water source, and the first tube 111 includes a plurality of S-shaped tube sections. In the inverter heat dissipation device of the embodiment of the utility model, the air supply fan 13 draws the airflow into the first air inlet pipe 11, and can further exchange heat with the cold water in the first tube 111, so that the airflow is further cooled, thereby improving the cooling effect on the inverter.

[0060] In some embodiments, Figure 3 and Figure 4 As shown, the inverter heat dissipation device also includes a filter assembly 3, which is arranged in the main air inlet pipe 10. The main air inlet pipe 10 includes a first side wall, a second side wall, a bottom wall 101 and a top wall. The first side wall is provided with an opening, and the bottom wall 101 is provided with a slide groove, which extends from the first side wall to the second side wall. The filter assembly 3 can move along the slide groove so as to enter and exit the main air inlet pipe 10 through the opening. For example, the cross-section of the main air inlet pipe 10 is rectangular, and the first side wall and the second side wall are arranged relative to each other in the horizontal direction. The filter assembly 3 is used to filter particulate matter in the airflow, such as dust or other impurities. In the inverter heat dissipation device of the utility model embodiment, the filter assembly 3 is arranged to be detachable, so that the filter assembly 3 can be cleaned in time, reducing or even preventing dust on the filter assembly 3 from entering the box.

[0061] A dehumidifier is also provided in the filter assembly 3 to dehumidify the airflow, thereby preventing small water droplets in the airflow from falling into the inverter, thereby causing a short circuit in the inverter.

[0062] Optionally, two strip plates are provided on the bottom wall 101 , and the two strip plates are arranged at an interval to define a slide groove.

[0063] In some embodiments, Figure 3 and Figure 4 As shown, the filter assembly 3 includes a frame 31 and a filter screen 32. The frame 31 includes a bottom plate 311. The bottom plate 311 can be installed in the chute and move along the chute. The filter screen 32 is detachably arranged on the frame 31. For example, the width of the chute is greater than the width of the bottom plate 311, so that the bottom plate 311 can enter the chute. The filter screen 32 is arranged on the frame 31 by bolt connection or clamping. When cleaning is required, the filter screen 32 can be removed.

[0064] Optionally, a handle 34 is further provided outside the filter assembly 3 to facilitate disassembly of the filter assembly 3 .

[0065] In some embodiments, Figure 5 As shown, the inverter heat dissipation device also includes a limit component 4, which is arranged on the outside of the main air inlet duct 10 and connected to the bottom wall 101. A groove is provided on one side of the bottom plate 311 adjacent to the bottom wall 101, and a through hole is provided at one end of the slide groove adjacent to the inlet. The limit component 4 includes a protrusion 41, which is movable along the axial direction of the through hole, and the protrusion 41 has a locking position and a releasing position. In the locking position, the protrusion 41 can pass through the through hole into the groove, and in the releasing position, the protrusion 41 can be separated from the groove.

[0066] For example, a groove is provided at the bottom of the base plate 311 of the frame 31. When the frame 31 is installed in the main air inlet duct 10, the groove is arranged relative to the through hole on the slide groove, and the protrusion 41 can enter and exit the through hole. The center line of the limit assembly 4 is arranged along the up and down direction, and the protrusion 41 moves along the up and down direction.

[0067] When the filter assembly 3 is installed in place, the groove is arranged relative to the through hole on the slide slot, and the protrusion 41 passes through the through hole into the groove, so that the filter assembly 3 cannot move relative to the slide slot, thereby limiting the operation of the filter assembly 3 and preventing the filter assembly 3 from loosening.

[0068] When the filter assembly 3 needs to be disassembled, the protrusion 41 is moved away from the position of the groove, and the filter assembly 3 can move relative to the slide groove.

[0069] In some embodiments, Figure 5 As shown, the limiting assembly 4 also includes a shell 40, in which a limiting cavity is provided. The limiting cavity is open at one end adjacent to the through hole, and a baffle 42 is provided at the other end of the limiting cavity. The baffle 42 is provided with a first hole 421, and the protrusion 41 is movable in the limiting cavity.

[0070] In some embodiments, Figure 5 As shown, the limiting assembly 4 also includes a pull rod 43, which includes a gripping portion 431 and a rod portion 432. The gripping portion 431 is arranged outside the limiting cavity, one end of the rod portion 432 is connected to the protrusion 41, and the other end of the rod portion 432 extends out of the first hole 421 and is connected to the gripping portion 431.

[0071] Optionally, the holding portion 431 is circular, and a diameter of the holding portion 431 is greater than a diameter of the first hole 421 .

[0072] In some embodiments, Figure 5 As shown, the limiting assembly 4 also includes a first elastic member 44, which is sleeved on the outer peripheral side of the pull rod 43, one end of the first elastic member 44 abuts against the baffle 42, and the other end of the first elastic member 44 is connected to the protrusion 41, and the first elastic member 44 has a force to urge the protrusion 41 to move toward the groove. Therefore, when it is necessary to disassemble the filter assembly 3, the protrusion 41 can be separated from the recess by pulling the gripping portion 431, so that the protrusion 41 moves to the release position, thereby facilitating the disassembly of the filter assembly 3.

[0073] The inverter heat dissipation device of the embodiment of the utility model can fix the filter assembly 3 through the limiting assembly 4, thereby facilitating the installation and removal of the filter assembly 3.

[0074] Optionally, a chamfer 411 is provided at the top of the protrusion 41, and the surface of the chamfer 411 is arranged toward the opening. When the filter assembly 3 is installed, the filter assembly 3 continues to slide forward after entering the opening. When the chamfer 411 of the protrusion 41 is contacted, a downward component force is generated on the protrusion 41, so that the protrusion 41 can move downward, thereby preventing the protrusion 41 from interfering with the movement of the filter assembly 3.

[0075] In some embodiments, the filter assembly 3 also includes a dehumidification component 33, which is detachably mounted on the frame 31 and spaced from the filter screen. The dehumidification component 33 includes a mounting frame 34 and a dehumidification cylinder. The mounting frame 34 is detachably mounted on the frame 31 and is provided with a plurality of mounting holes 35. The axial direction of the mounting holes 35 is consistent with the extension direction of the main air inlet pipe 10. The dehumidification cylinder is detachably mounted in the mounting holes 35, and the dehumidification cylinder is filled with a dehumidifier. The inverter heat dissipation device of the embodiment of the present application fills the dehumidifier in the dehumidifier cylinder, and then detachably mounts the dehumidifier cylinder on the mounting frame 34. When the dehumidifier needs to be replaced, only the expired dehumidifier needs to be removed, and all the dehumidifiers do not need to be replaced, thereby improving the utilization rate of the dehumidifier.

[0076] Optionally, the dehumidification cartridge is made of a mesh.

[0077] Optionally, the mounting bracket 34 is formed integrally with the frame 31 .

[0078] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0082] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0083] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A frequency converter heat dissipation device, characterized in that: The frequency converter comprises a box body, the top of the box body is provided with an air inlet, and the bottom of the box body is provided with an air outlet, including: An air inlet assembly, the air inlet assembly comprising a main air inlet duct, a first air inlet duct and a second air inlet duct, one end of the main air inlet duct being connected to the air inlet, one end of the first air inlet duct being connected to the other end of the main air inlet duct, the other end of the first air inlet duct extending out of the room where the inverter is located so as to be connected to the atmosphere, one end of the second air inlet duct being connected to the other end of the main air inlet duct, the other end of the second air inlet duct being connected to a refrigeration device so as to guide the airflow provided by the refrigeration device into the main air inlet duct; A filter assembly, wherein the filter assembly is arranged in the main air inlet duct; An air outlet pipe, one end of which is connected to the air outlet, and the other end of which extends out of the room where the frequency converter is located; An air supply fan, wherein the air supply fan is arranged in the air inlet assembly; An exhaust fan, the exhaust fan is arranged in the air outlet pipe so as to extract the air flow in the box; a first temperature sensor, wherein the first temperature sensor is disposed in the box; A second temperature sensor is disposed outside the box.

2. The inverter heat dissipation device according to claim 1, characterized in that: A controller is also included, and the controller is electrically connected to each of the supply fan, the exhaust fan, the refrigeration device, the first temperature sensor, and the second temperature sensor.

3. The inverter heat dissipation device according to claim 2, characterized in that: There are multiple air supply fans, and the main air inlet pipe, the first air inlet pipe and the second air inlet pipe are all equipped with the air supply fans.

4. The inverter heat dissipation device according to claim 2 or 3, characterized in that: The main air inlet duct includes a first side wall, a second side wall, a bottom wall and a top wall. The first side wall is provided with an opening. The bottom wall is provided with a slide groove. The slide groove extends from the first side wall to the second side wall. The filter assembly can move along the slide groove so as to enter and exit the main air inlet duct through the opening.

5. The inverter heat dissipation device according to claim 4, characterized in that: The filter assembly comprises: A frame, the frame comprising a bottom plate, the bottom plate being mountable in the slide slot and movable along the slide slot; A filter screen is detachably arranged on the frame.

6. The inverter heat dissipation device according to claim 5, characterized in that: It also includes a limiting component, which is arranged on the outer side of the main air inlet duct and connected to the bottom wall. A groove is provided on a side of the bottom plate adjacent to the bottom wall, and a through hole is provided on an end of the slide groove adjacent to the opening. The limiting component includes a protrusion, which is movable along the axial direction of the through hole, and the protrusion has a locking position and a releasing position. In the locking position, the protrusion can pass through the through hole into the groove, and in the releasing position, the protrusion can be separated from the groove.

7. The inverter heat dissipation device according to claim 6, characterized in that: The limiting assembly also includes a shell, a limiting cavity is arranged in the shell, one end of the limiting cavity adjacent to the through hole is open, the other end of the limiting cavity is provided with a baffle, the baffle is provided with a first hole, and the protrusion is movable in the limiting cavity.

8. The inverter heat dissipation device according to claim 7, characterized in that: The limiting assembly also includes a pull rod, which includes a gripping portion and a rod portion. The gripping portion is arranged outside the limiting cavity, one end of the rod portion is connected to the protrusion, and the other end of the rod portion extends out of the first hole and is connected to the gripping portion.

9. The inverter heat dissipation device according to claim 8, characterized in that: The limiting assembly also includes a first elastic member, which is sleeved on the outer peripheral side of the pull rod, one end of the first elastic member abuts against the baffle, and the other end of the first elastic member is connected to the protrusion, and the first elastic member has a force that causes the protrusion to move toward the groove.

10. The inverter heat sink according to claim 5, characterized in that: The filter assembly also includes a dehumidification component, which is detachably mounted on the frame and spaced apart from the filter screen. The dehumidification component includes a mounting frame and a dehumidification cylinder, which is detachably mounted on the frame and provided with a plurality of mounting holes, wherein the axial direction of the mounting hole is consistent with the extension direction of the main air inlet pipe, the dehumidification cylinder is detachably mounted in the mounting hole, and the dehumidification cylinder is filled with a dehumidifier.

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