Frequency converter structure with built-in thin-film capacitor

Abstract

The invention discloses a frequency converter structure with a built-in thin-film capacitor, which belongs to the technical field of frequency converters and comprises a supporting seat, and a frequency converter shell mechanism is arranged on the supporting seat and comprises a first frequency converter shell and a second frequency converter shell which are symmetrically arranged on the supporting seat. A rectifier bridge is fixedly installed on the inner wall of the first frequency converter shell, and a thin-film capacitor body is fixedly installed below the rectifier bridge. According to the invention, through the arrangement of the frequency converter housing mechanism, the heat dissipation mechanisms in the first frequency converter housing and the second frequency converter housing are converted from air cooling heat dissipation to liquid cooling heat dissipation, so that the rectifier bridge, the thin-film capacitor body, the contactor and the resistor installed on the inner walls of the first frequency converter housing and the second frequency converter housing can be attached to the cooling plate; therefore, the arrangement of an air duct is canceled, the heat dissipation performance is effectively prevented from being influenced by dust attachment, and the problems of high-temperature burnout or machine explosion and the like are avoided.

Description

Technical Field

[0001] The present invention relates to a frequency converter structure, in particular to a frequency converter structure with a built-in film capacitor, and belongs to the technical field of frequency converters. Background Art

[0002] A frequency converter is a power electronic device used to control the speed of an AC motor. It achieves precise control of the motor's speed and torque by adjusting the frequency and voltage of the motor's input power supply. Frequency converters are widely used in industrial automation, energy management, building facilities, transportation and other fields. They have the advantages of energy saving, a wide speed regulation range, high control accuracy, and smooth startup.

[0003] When the inverter is working, the current flowing through the inverter is very large, and the heat dissipation of the inverter also increases accordingly. The heat dissipation method of the existing inverter is generally to set a heat dissipation port directly on the cabinet to dissipate heat inside the cabinet. When air cooling is used, a lot of dust and impurities accumulate inside the inverter. When the dust accumulation reaches a certain level, some positions of the inverter functional modules, especially the film capacitors and MOS tubes in the inverter, are components with relatively high heat generation and are generally placed in the air duct. Dust and other debris can easily attach to the film capacitors and MOS tubes, affecting the heat dissipation performance. It is easy to cause problems such as burning or explosion due to high temperature. Summary of the Invention

[0004] The main purpose of the present invention is to solve the above problems and provide a frequency converter structure with built-in film capacitors.

[0005] The object of the present invention can be achieved by adopting the following technical solution: through the setting of the inverter housing mechanism, the heat dissipation mechanism in the first inverter housing and the second inverter housing is converted from air cooling to liquid cooling, so that the rectifier bridge, film capacitor body, contactor and resistor installed on the inner wall of the first inverter housing and the second inverter housing can all be close to the cooling plate, and the rectifier bridge, film capacitor body, contactor and resistor are cooled by the flow of coolant in the cooling plate. In this way, the setting of the air duct is cancelled, and dust and impurities are prevented from entering the first inverter housing and the second inverter housing and adhering to the rectifier bridge, film capacitor body, contactor and resistor, effectively avoiding the adhesion of dust affecting its heat dissipation performance, and avoiding problems such as high temperature burning or explosion.

[0006] A frequency converter structure with a built-in film capacitor includes a support base, a frequency converter housing mechanism is provided on the support base, the frequency converter housing mechanism includes a first frequency converter housing and a second frequency converter housing symmetrically arranged on the support base, a rectifier bridge is fixedly mounted on the inner wall of the first frequency converter housing, a film capacitor body is fixedly mounted below the rectifier bridge, a contactor is fixedly mounted on the inner wall of the second frequency converter housing, a resistor is fixedly mounted below the contactor, a coolant tank is provided on the back of the support base, a heat exchanger is fixedly mounted on the coolant tank, a plurality of delivery pumps are fixedly mounted on the top and bottom of the coolant tank, two fixed rods are symmetrically fixedly mounted on the middle part of the support base, a first support frame is provided between the two fixed rods, cooling plates are fixedly mounted on both sides of the first support frame, a liquid inlet pipe and a liquid outlet pipe are fixedly mounted on the top and bottom of the cooling plate, respectively, and the liquid inlet pipe and the liquid outlet pipe are respectively connected to the delivery pump.

[0007] Preferably, the fixing rod is provided with a plurality of first bolts connected by threads, the top and bottom of the first support frame are provided with a plurality of first thread grooves, both sides of the coolant tank are provided with second bolts connected by threads, and the support seat is provided with a plurality of second thread grooves.

[0008] Preferably, a first threaded barrel is fixedly mounted on one end of the liquid inlet pipe and the liquid outlet pipe close to the delivery pump, a second threaded barrel is fixedly mounted on the delivery pump, and a threaded sleeve is mounted between the first threaded barrel and the second threaded barrel.

[0009] Preferably, a plurality of anti-sliding blocks are fixedly mounted on the threaded sleeve, and the plurality of anti-sliding blocks are evenly distributed on the surface of the threaded sleeve.

[0010] Preferably, a plurality of fixed frames are fixedly installed on one surface of the support base close to the first inverter housing and the second inverter housing, a motor is fixedly installed on one side of the fixed frame, a screw connected to the output end of the motor is movably installed inside the fixed frame, a moving block connected by a thread is provided on the screw, and one end of the two moving blocks is fixedly connected to the first inverter housing and the second inverter housing respectively.

[0011] Preferably, a plurality of slide grooves are provided on the upper surface of the bottom of the support base, and slide rods are fixedly mounted on the bottom of the first inverter housing and the second inverter housing, and the slide rods are slidably connected to the slide grooves.

[0012] Preferably, fixed blocks are fixedly installed on both sides of the moving block, a sponge wiper that fits the screw is fixedly installed on one side of the fixed block, and an oil tank installed on the moving block is provided on the other side of the fixed block, an oil pump is installed at the bottom of the oil tank, and an oil pipe extending to the sponge wiper is installed on the oil pump.

[0013] Preferably, a plurality of sealing grooves are provided on a side of the first inverter housing close to the second inverter housing, and a plurality of sealing strips are fixedly installed on a side of the second inverter housing close to the first inverter housing.

[0014] Preferably, a temperature display is fixedly mounted on the surface of the second inverter housing, and a temperature sensing module connected to the electrical signal of the temperature display is fixedly mounted on the rectifier bridge, the film capacitor body, the contactor and the resistor.

[0015] Preferably, a plurality of second support frames are fixedly mounted on both sides of the inner walls of the first inverter housing and the second inverter housing, a baffle is movably mounted on one side of the second support frame, a plurality of through holes are provided on the baffle, and silica gel drying blocks and calcium chloride drying blocks are arranged inside the second support frame.

[0016] The beneficial technical effects of the present invention are as follows: According to an inverter structure with a built-in thin film capacitor of the present invention, the heat dissipation mechanism in the first inverter housing and the second inverter housing is converted from air cooling to liquid cooling through the setting of the inverter shell mechanism, so that the rectifier bridge, thin film capacitor body, contactor and resistor installed on the inner wall of the first inverter housing and the second inverter housing can all be attached to the cooling plate, and the rectifier bridge, thin film capacitor body, contactor and resistor are cooled and dissipated by the flow of coolant in the cooling plate. In this way, the setting of the air duct is cancelled, and dust and impurities are prevented from entering the first inverter housing and the second inverter housing and adhering to the rectifier bridge, thin film capacitor body, contactor and resistor, effectively avoiding the adhesion of dust affecting its heat dissipation performance, and avoiding problems such as high temperature burning or explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of a preferred embodiment of the present invention; Figure 2 It is a schematic rear view of the overall structure according to a preferred embodiment of the present invention; Figure 3 It is a schematic diagram of the expanded structure of the first inverter housing and the second inverter housing according to a preferred embodiment of the present invention; Figure 4 is a schematic side view of a cooling plate structure according to a preferred embodiment of the present invention; Figure 5This is a schematic diagram of the separation structure of the coolant tank, the fixing rod, the first support frame and the cooling plate according to a preferred embodiment of the present invention; Figure 6 According to a preferred embodiment of the present invention Figure 4 Enlarged view of point A in the middle; Figure 7 Schematic diagram of a sealing strip structure according to a preferred embodiment of the present invention; Figure 8 is a schematic cross-sectional view of a fixing frame structure according to a preferred embodiment of the present invention; Figure 9 According to a preferred embodiment of the present invention Figure 8 Enlarged view of point B in the middle; Figure 10 Schematic diagram of the separation of the second support frame and the baffle structure according to a preferred embodiment of the present invention.

[0018] In the figure: 1, support base; 2, inverter housing structure; 3, first inverter housing; 4, second inverter housing; 5, rectifier bridge; 6, film capacitor body; 7, contactor; 8, resistor; 9, coolant tank; 10, heat exchanger; 11, delivery pump; 12, fixing rod; 13, first support frame; 14, cooling plate; 15, liquid inlet pipe; 16, liquid outlet pipe; 17, first bolt; 18, first thread groove; 19, second bolt; 20, second thread groove; 21, first Threaded barrel; 22. Second threaded barrel; 23. Threaded sleeve; 24. Anti-sliding block; 25. Fixed frame; 26. Motor; 27. Screw; 28. Moving block; 29. Slide; 30. Slide; 31. Fixed block; 32. Sponge; 33. Oil tank; 34. Oil pipeline; 35. Sealing groove; 36. Sealing strip; 37. Temperature display; 38. Temperature sensor module; 39. Second support frame; 40. Baffle; 41. Through hole; 42. Silica gel drying block; 43. Calcium chloride drying block. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0020] like Figures 1-10As shown, the present embodiment provides an inverter structure with a built-in film capacitor, including a support base 1, a frequency converter housing mechanism 2 is provided on the support base 1, the frequency converter housing mechanism 2 includes a first frequency converter housing 3 and a second frequency converter housing 4 symmetrically arranged on the support base 1, a rectifier bridge 5 is fixedly mounted on the inner wall of the first frequency converter housing 3, a film capacitor body 6 is fixedly mounted below the rectifier bridge 5, a contactor 7 is fixedly mounted on the inner wall of the second frequency converter housing 4, a resistor 8 is fixedly mounted below the contactor 7, and the support base 1 A coolant tank 9 is provided on the back side, a heat exchanger 10 is fixedly mounted on the coolant tank 9, a plurality of delivery pumps 11 are fixedly mounted on the top and bottom of the coolant tank 9, two fixed rods 12 are symmetrically fixedly mounted in the middle of the support base 1, a first support frame 13 is provided between the two fixed rods 12, cooling plates 14 are fixedly mounted on both sides of the first support frame 13, a liquid inlet pipe 15 and a liquid outlet pipe 16 are fixedly mounted on the top and bottom of the cooling plate 14, respectively, and the liquid inlet pipe 15 and the liquid outlet pipe 16 are respectively connected to the delivery pump 11.

[0021] By setting the inverter housing mechanism 2, the heat dissipation mechanism in the first inverter housing 3 and the second inverter housing 4 is converted from air cooling to liquid cooling, so that the rectifier bridge 5, film capacitor body 6, contactor 7 and resistor 8 installed on the inner walls of the first inverter housing 3 and the second inverter housing 4 can all be close to the cooling plate 14, and the rectifier bridge 5, film capacitor body 6, contactor 7 and resistor 8 are cooled and cooled by the flow of coolant in the cooling plate 14. In this way, the setting of the air duct is cancelled, and dust and impurities are prevented from entering the first inverter housing 3 and the second inverter housing 4 and adhering to the rectifier bridge 5, film capacitor body 6, contactor 7 and resistor 8, effectively preventing the adhesion of dust from affecting its heat dissipation performance and avoiding problems such as high temperature burning or explosion.

[0022] In this embodiment, if Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the fixing rod 12 is provided with a plurality of first bolts 17 connected by threads, the top and bottom of the first support frame 13 are provided with a plurality of first thread grooves 18, both sides of the coolant tank 9 are provided with second bolts 19 connected by threads, the support seat 1 is provided with a plurality of second thread grooves 20, the inlet pipe 15 and the outlet pipe 16 are fixedly installed with a first threaded barrel 21 on one end close to the delivery pump 11, the delivery pump 11 is fixedly installed with a second threaded barrel 22, a threaded sleeve 23 is installed between the first threaded barrel 21 and the second threaded barrel 22, a plurality of anti-slide blocks 24 are fixedly installed on the threaded sleeve 23, and the plurality of anti-slide blocks 24 are evenly distributed on the surface of the threaded sleeve 23. By the arrangement of the first bolt 17, the first thread groove 18, the second bolt 19, the second thread groove 20, the first threaded cylinder 21, the second threaded cylinder 22 and the threaded sleeve 23, the fixing rod 12 and the first support frame 13 are fixedly installed by the connection of the multiple first bolts 17 and the first thread groove 18, and the coolant tank body 9 and the support seat 1 are fixedly installed by the connection of the multiple second bolts 19 and the second thread groove 20, which makes it possible to disassemble the coolant tank body 9 and the first support frame 13 from the support seat 1 and the fixing rod 12 respectively. By removing the multiple first bolts 17 and the second bolts 19 from the first thread groove 18 and the second thread groove 20, the fixation of the first support frame 13 and the coolant tank body 9 can be cancelled, so that they can be removed from the support seat The seat 1 and the fixing rod 12 are disassembled, and the liquid inlet pipe 15 and the liquid outlet pipe 16 and the delivery pump 11 on the coolant box 9 are installed and connected by the threaded connection of the first threaded cylinder 21, the second threaded cylinder 22 and the threaded sleeve 23. After twisting the threaded sleeve 23 upward or downward to disengage from the connection between the first threaded cylinder 21 and the second threaded cylinder 22, the liquid inlet pipe 15 and the liquid outlet pipe 16 can be disassembled and separated from the delivery pump 11, which makes the coolant box 9 and the first support frame 13 have the function of independent disassembly and separation, which is convenient for replacement in case of damage. Through the provision of the anti-sliding block 24, multiple anti-sliding blocks 24 are evenly distributed on the surface of the threaded sleeve 23, which increases the friction force on the surface of the threaded sleeve 23 and facilitates twisting of the threaded sleeve 23 during disassembly and assembly.

[0023] In this embodiment, if Figures 1-10As shown, a plurality of fixed frames 25 are fixedly installed on one surface of the support base 1 close to the first inverter housing 3 and the second inverter housing 4, a motor 26 is fixedly installed on one side of the fixed frame 25, a screw 27 connected to the output end of the motor 26 is movably installed inside the fixed frame 25, a moving block 28 connected by a thread is provided on the screw 27, and one end of the two moving blocks 28 is fixedly connected to the first inverter housing 3 and the second inverter housing 4 respectively, a plurality of slide grooves 29 are provided on the upper surface of the bottom of the support base 1, the bottom of the first inverter housing 3 and the second inverter housing 4 are fixedly installed with a slide rod 30, the slide rod 30 is slidably connected to the slide groove 29, fixed blocks 31 are fixedly installed on both sides of the moving block 28, a sponge 32 fitted with the screw 27 is fixedly installed on one side of the fixed block 31, and an oil tank 33 installed on the moving block 28 is provided on the other side of the fixed block 31, an oil pump is installed at the bottom of the oil tank 33, and an oil pipeline 34 extending to the sponge 32 is installed on the oil pump. By means of the setting of the fixed frame 25, the motor 26, the screw 27, the moving block 28, the slide 29 and the slide bar 30, the first inverter housing 3 and the second inverter housing 4 are fixedly connected to the two moving blocks 28 respectively. Under the transmission rotation of the motor 26 and the screw 27, the two moving blocks 28 can drive the first inverter housing 3 and the second inverter housing 4 to move, and under the support of the slide 29 and the slide bar 30, the first inverter housing 3 and the second inverter housing 4 are merged into a whole, and the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 inside are affixed to the cooling plate 14, which not only makes the structure of the first inverter housing 3 and the second inverter housing 4 sufficiently stable after being merged, but also makes it convenient to separate the first inverter housing 3 and the second inverter housing 4, and facilitates regular maintenance of the rectifier bridge 5, The film capacitor body 6, contactor 7 and a certain part of the resistor 8 are inspected to prevent malfunction and damage. Through the arrangement of the fixed block 31, sponge 32, oil tank 33 and oil pipe 34, since the fixed frame 25 does not completely seal the screw 27, the dust from the outside will adhere to the surface of the screw 27 and affect the transmission of the moving block 28. At this time, the sponges 32 arranged on both sides of the moving block 28 are attached to the screw 27. During the movement of the moving block 28, the dust on the surface of the screw 27 can be cleaned at all times to prevent dust from entering the connection between the screw 27 and the moving block 28 and affecting the transmission. At the same time, the oil pump and the oil pipe 34 can transport the lubricating oil in the oil tank 33 to the sponge 32, so that the sponge 32 wipes the lubricating oil on the surface of the screw 27 for lubrication and maintenance, further preventing dust from adhering to the transmission.

[0024] In this embodiment, if Figures 1-10As shown, a plurality of sealing grooves 35 are provided on a side of the first inverter housing 3 close to the second inverter housing 4, a plurality of sealing strips 36 are fixedly installed on a side of the second inverter housing 4 close to the first inverter housing 3, a temperature display 37 is fixedly installed on the surface of the second inverter housing 4, and a temperature sensing module 38 electrically connected to the temperature display 37 is fixedly installed on the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8. A plurality of second support frames 39 are fixedly installed on both sides of the inner wall of the first inverter housing 3 and the second inverter housing 4, a baffle 40 is movably installed on one side of the second support frame 39, and a plurality of through holes 41 are provided on the baffle 40. A silica gel drying block 42 and a calcium chloride drying block 43 are arranged inside the second support frame 39. By setting the sealing groove 35 and the sealing strip 36, after the first inverter housing 3 and the second inverter housing 4 are merged, the sealing strip 36 can be inserted into the sealing groove 35 to seal the connection between the first inverter housing 3 and the second inverter housing 4, further preventing dust from entering through the gap. By setting the temperature display 37 and the temperature sensor module 38, the temperature of the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 can be monitored in real time, so as to adjust the temperature of the coolant in the coolant tank 9 according to the current temperature of the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8, so as to achieve better cooling and heat dissipation purposes. 0. The setting of the through hole 41 and the silica gel drying block 42. During the heat dissipation and cooling process, the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 in the high temperature state will form condensed water vapor due to the temperature difference after touching the cooling plate 14 in the low temperature state. The silica gel drying block 42 and the calcium chloride drying block 43 set in the second support frame 39 can absorb and dry these water vapors to avoid the formation of water droplets causing a short circuit in the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8. The baffle 40 is movably installed on the second support frame 39. After separating the first inverter housing 3 and the second inverter housing 4, the silica gel drying block 42 and the calcium chloride drying block 43 can be easily replaced regularly.

[0025] In this embodiment, if Figures 1-10 As shown, the working process of the inverter structure with built-in thin film capacitors provided in this embodiment is as follows: Synchronously start the two motors 26 to drive the screw 27 to rotate, so that the screw 27 drives the moving block 28 to drive the first inverter housing 3 and the second inverter housing 4 to move until the first inverter housing 3 and the second inverter housing 4 are merged together. At this time, the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 on the inner wall of the first inverter housing 3 and the second inverter housing 4 are all attached to the cooling plate 14. When heat dissipation and cooling are performed, the delivery pumps 11 on the top and bottom of the coolant tank 9 are started. The delivery pump 11 on the top delivers the coolant in the coolant tank 9 to the cooling plate 14 through the liquid inlet pipe 15, and relies on the flow of the coolant to move the rectifier bridge. 5. The heat of the film capacitor body 6, the contactor 7 and the resistor 8 is absorbed and taken away, and the coolant after heat exchange in the cooling plate 14 is pumped back to the coolant tank 9 through the liquid outlet pipe 16 by the delivery pump 11 at the bottom of the coolant tank 9, and the heat exchanger 10 on the coolant tank 9 is used to cool the coolant after heat absorption, so as to realize the circulation of the coolant to dissipate heat and cool down the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8, and after reverse starting the two motors 26, the first inverter housing 3 and the second inverter housing 4 can be driven to separate and unfold, so as to carry out regular maintenance of the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8.

[0026] In summary, in this embodiment, according to the inverter structure with a built-in film capacitor of this embodiment, through the arrangement of the first bolt 17, the first thread groove 18, the second bolt 19, the second thread groove 20, the first threaded barrel 21, the second threaded barrel 22 and the threaded sleeve 23, the fixing rod 12 and the first support frame 13 are fixedly installed by the connection of the multiple first bolts 17 and the first thread groove 18, and the coolant tank body 9 and the support seat 1 are fixedly installed by the connection of the multiple second bolts 19 and the second thread groove 20, which enables the coolant tank body 9 and the first support frame 13 to be disassembled from the support seat 1 and the fixing rod 12 respectively, and the first support frame 13 and the coolant tank body 9 can be removed from the support seat 1 and the fixing rod 12 respectively. The box body 9 is fixed so that it can be disassembled from the support base 1 and the fixing rod 12, and the liquid inlet pipe 15 and the liquid outlet pipe 16 and the delivery pump 11 on the coolant box body 9 are installed and connected by the threaded connection of the first threaded cylinder 21, the second threaded cylinder 22 and the threaded sleeve 23. After twisting the threaded sleeve 23 upward or downward to disengage from the connection between the first threaded cylinder 21 and the second threaded cylinder 22, the liquid inlet pipe 15 and the liquid outlet pipe 16 can be disassembled and separated from the delivery pump 11, which makes the coolant box body 9 and the first support frame 13 have the function of independent disassembly and separation, which is convenient for replacement in case of damage and failure. Through the setting of the anti-sliding block 24, multiple anti-sliding blocks 24 are evenly distributed on the surface of the threaded sleeve 23, which increases the friction force on the surface of the threaded sleeve 23 and facilitates twisting of the threaded sleeve 23 during disassembly and assembly.

[0027] By means of the setting of the fixed frame 25, the motor 26, the screw 27, the moving block 28, the slide 29 and the slide bar 30, the first inverter housing 3 and the second inverter housing 4 are fixedly connected to the two moving blocks 28 respectively. Under the transmission rotation of the motor 26 and the screw 27, the two moving blocks 28 can drive the first inverter housing 3 and the second inverter housing 4 to move, and under the support of the slide 29 and the slide bar 30, the first inverter housing 3 and the second inverter housing 4 are merged into a whole, and the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 inside are affixed to the cooling plate 14, which not only makes the structure of the first inverter housing 3 and the second inverter housing 4 sufficiently stable after being merged, but also makes it convenient to separate the first inverter housing 3 and the second inverter housing 4, and facilitates regular maintenance of the rectifier bridge 5, The film capacitor body 6, contactor 7 and a certain part of the resistor 8 are inspected to prevent malfunction and damage. Through the arrangement of the fixed block 31, sponge 32, oil tank 33 and oil pipe 34, since the fixed frame 25 does not completely seal the screw 27, the dust from the outside will adhere to the surface of the screw 27 and affect the transmission of the moving block 28. At this time, the sponges 32 arranged on both sides of the moving block 28 are attached to the screw 27. During the movement of the moving block 28, the dust on the surface of the screw 27 can be cleaned at all times to prevent dust from entering the connection between the screw 27 and the moving block 28 and affecting the transmission. At the same time, the oil pump and the oil pipe 34 can transport the lubricating oil in the oil tank 33 to the sponge 32, so that the sponge 32 wipes the lubricating oil on the surface of the screw 27 for lubrication and maintenance, further preventing dust from adhering to the transmission.

[0028] By setting the sealing groove 35 and the sealing strip 36, after the first inverter housing 3 and the second inverter housing 4 are merged, the sealing strip 36 can be inserted into the sealing groove 35 to seal the connection between the first inverter housing 3 and the second inverter housing 4, further preventing dust from entering through the gap. By setting the temperature display 37 and the temperature sensor module 38, the temperature of the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 can be monitored in real time, so as to adjust the temperature of the coolant in the coolant tank 9 according to the current temperature of the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8, so as to achieve better cooling and heat dissipation purposes. 0. The setting of the through hole 41 and the silica gel drying block 42. During the heat dissipation and cooling process, the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8 in the high temperature state will form condensed water vapor due to the temperature difference after touching the cooling plate 14 in the low temperature state. The silica gel drying block 42 and the calcium chloride drying block 43 set in the second support frame 39 can absorb and dry these water vapors to avoid the formation of water droplets causing a short circuit in the rectifier bridge 5, the film capacitor body 6, the contactor 7 and the resistor 8. The baffle 40 is movably installed on the second support frame 39. After separating the first inverter housing 3 and the second inverter housing 4, the silica gel drying block 42 and the calcium chloride drying block 43 can be easily replaced regularly.

[0029] The above is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which fall within the scope of protection of the present invention.

Claims

1. A frequency converter structure with a built-in film capacitor, comprising a support base (1), characterized in that: The support base (1) is provided with a frequency converter housing mechanism (2), and the frequency converter housing mechanism (2) comprises a first frequency converter housing (3) and a second frequency converter housing (4) symmetrically provided on the support base (1); a rectifier bridge (5) is fixedly mounted on the inner wall of the first frequency converter housing (3); a film capacitor body (6) is fixedly mounted below the rectifier bridge (5); a contactor (7) is fixedly mounted on the inner wall of the second frequency converter housing (4); a resistor (8) is fixedly mounted below the contactor (7); a coolant tank (9) is provided on the back of the support base (1); and the coolant tank (9) is fixedly mounted on the inner wall of the second frequency converter housing (4). A heat exchanger (10) is fixedly mounted on the liquid tank body (9), a plurality of delivery pumps (11) are fixedly mounted on the top and bottom of the cooling liquid tank body (9), two fixed rods (12) are symmetrically fixedly mounted on the middle of the support base (1), a first support frame (13) is provided between the two fixed rods (12), cooling plates (14) are fixedly mounted on both sides of the first support frame (13), a liquid inlet pipe (15) and a liquid outlet pipe (16) are fixedly mounted on the top and bottom of the cooling plate (14), respectively, and the liquid inlet pipe (15) and the liquid outlet pipe (16) are respectively connected to the delivery pump (11).

2. The inverter structure with built-in thin film capacitor according to claim 1, characterized in that: The fixing rod (12) is provided with a plurality of first bolts (17) connected by threads, the top and bottom of the first support frame (13) are provided with a plurality of first thread grooves (18), both sides of the coolant tank (9) are provided with second bolts (19) connected by threads, and the support seat (1) is provided with a plurality of second thread grooves (20).

3. The inverter structure with built-in thin film capacitor according to claim 1, characterized in that: A first threaded barrel (21) is fixedly mounted on one end of the liquid inlet pipe (15) and the liquid outlet pipe (16) close to the delivery pump (11), a second threaded barrel (22) is fixedly mounted on the delivery pump (11), and a threaded sleeve (23) is mounted between the first threaded barrel (21) and the second threaded barrel (22).

4. The inverter structure with built-in thin film capacitor according to claim 3, characterized in that: A plurality of anti-sliding blocks (24) are fixedly mounted on the threaded sleeve (23), and the plurality of anti-sliding blocks (24) are evenly distributed on the surface of the threaded sleeve (23).

5. The inverter structure with built-in film capacitor according to claim 1, characterized in that: A plurality of fixed frames (25) are fixedly mounted on one surface of the support base (1) close to the first inverter housing (3) and the second inverter housing (4), a motor (26) is fixedly mounted on one side of the fixed frame (25), a screw (27) connected to the output end of the motor (26) is movably mounted inside the fixed frame (25), a moving block (28) connected by a thread is provided on the screw (27), and one end of the two moving blocks (28) is fixedly connected to the first inverter housing (3) and the second inverter housing (4), respectively.

6. The inverter structure with built-in film capacitor according to claim 1, characterized in that: A plurality of slide grooves (29) are provided on the upper surface of the bottom of the support seat (1), and a slide rod (30) is fixedly installed on the bottom of each of the first inverter housing (3) and the second inverter housing (4), and the slide rod (30) is slidably connected to the slide grooves (29).

7. The inverter structure with built-in film capacitor according to claim 5, characterized in that: Fixed blocks (31) are fixedly mounted on both sides of the moving block (28), a sponge (32) in contact with the screw (27) is fixedly mounted on one side of the fixed block (31), and an oil tank (33) mounted on the moving block (28) is provided on the other side of the fixed block (31), an oil pump is mounted at the bottom of the oil tank (33), and an oil delivery pipe (34) extending to the sponge (32) is mounted on the oil pump.

8. The inverter structure with built-in film capacitor according to claim 1, characterized in that: A plurality of sealing grooves (35) are provided on a side of the first frequency converter housing (3) close to the second frequency converter housing (4), and a plurality of sealing strips (36) are fixedly mounted on a side of the second frequency converter housing (4) close to the first frequency converter housing (3).

9. The inverter structure with built-in film capacitor according to claim 1, characterized in that: A temperature display (37) is fixedly mounted on the surface of the second inverter housing (4), and a temperature sensing module (38) electrically connected to the temperature display (37) is fixedly mounted on the rectifier bridge (5), the film capacitor body (6), the contactor (7), and the resistor (8).

10. The inverter structure with built-in film capacitor according to claim 1, characterized in that: A plurality of second support frames (39) are fixedly mounted on both sides of the inner walls of the first inverter housing (3) and the second inverter housing (4); a baffle (40) is movably mounted on one side of the second support frame (39); a plurality of through holes (41) are formed on the baffle (40); and a silica gel drying block (42) and a calcium chloride drying block (43) are arranged inside the second support frame (39).

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