Assembled frequency conversion control device and method

Abstract

The invention discloses an assembled frequency conversion control device and method, and belongs to the field of frequency converters. Comprising a cabinet body and a heat dissipation assembly arranged in the cabinet body. The heat dissipation assembly comprises a heat dissipation fan, an air inlet duct and a negative pressure space; the lower part of the negative pressure space is communicated with the air inlet duct; air inlet holes penetrating through the front plate are formed in the front plate in an array mode. The beneficial effects are that the frequency conversion module is arranged on the front end face of the front plate in the negative pressure space, when the frequency conversion module works, a large amount of heat generated by the integrated circuit board of the frequency conversion module can be conducted into the negative pressure space through the front plate, and the heat of the frequency conversion module is prevented from diffusing into the cabinet body. Air inlet holes penetrating through the front plate are formed in the front plate in an array mode, the heat dissipation draught fan works, high-speed airflow is formed in the negative pressure space, heat generated by electronic components and integrated chips is just transmitted to air in the cabinet body, and formed hot air can directly enter the negative pressure space through the air inlet holes. The electronic component and the integrated circuit board are prevented from being in hot air for a long time.

Description

Technical Field

[0001] The invention relates to an assembled frequency conversion control device and method, belonging to the field of frequency conversion control equipment. Background Art

[0002] At present, the frequency conversion module in the commonly used frequency conversion air conditioner generally adopts an aluminum finned heat sink, and the heat of the frequency conversion module is removed by the air flow of the fan motor through the heat sink of the finned heat sink. However, since the outdoor compressor drive module in the frequency conversion air conditioner generates a large amount of heat during operation, a passive heat dissipation method is adopted for heat dissipation, which has a relatively low efficiency. Especially when the outdoor ambient temperature is very high, it is easy to cause shutdown or forced frequency reduction due to excessive temperature of the frequency conversion module, affecting the comfort of users.

[0003] Therefore, it is necessary to improve the heat dissipation structure in the inverter to improve the heat dissipation efficiency of the frequency conversion control device. Summary of the invention

[0004] The object of the present invention is to provide an assembled frequency conversion control device and method, which can effectively solve the above-mentioned problems.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: It includes a cabinet 1 and a heat dissipation component 2 arranged in the cabinet 1; the heat dissipation component 2 includes a heat dissipation fan 3 located at the top of the cabinet 1, an air inlet duct located at the bottom of the cabinet 1, and a negative pressure space 4 located between the heat dissipation fan 3 and the air inlet duct; The negative pressure space 4 is composed of the back panel 14, two side panels 41 and the front panel 42 of the cabinet 1. The lower part of the negative pressure space 4 is connected to the air inlet duct and the upper part is provided with a heat dissipation fan 3; the front panel 42 is arrayed with air inlet holes 43 that penetrate the front panel 42.

[0006] Furthermore, the array of the air inlet holes 43 is divided into a vertical array and a rectangular array, and the air inlet holes 43 of the rectangular array are located above the air inlet holes 43 of the vertical array.

[0007] Furthermore: a radiator 5 is also arranged in the negative pressure space 4, and the radiator 5 is composed of a plurality of cooling fins.

[0008] Further: a first air induction mechanism 6 is further provided between the negative pressure space 4 and the air inlet duct, the first air induction mechanism 6 comprising a first right-angled trapezoidal plate 61 located at the lower end surface of the side plate 41, a first inclined plate 62 located at the lower end surface of the front plate 42, and an air inlet plate 63 located at the lower ends of the first inclined plate 62 and the first right-angled trapezoidal plate 61, wherein a plurality of air inlet slots 64 are provided in the air inlet plate 63; The rear end surface of the first air induction mechanism 6 is formed by the back plate 14 of the cabinet 1 , and first ventilation slots 7 are arranged in an array on the back plate 14 of the cabinet 1 at the position of the first air induction mechanism 6 .

[0009] Further: a second air induction mechanism 8 is further provided between the negative pressure space 4 and the heat dissipation fan 3, the second air induction mechanism 8 comprising a second right-angle trapezoidal plate 81 located on the upper end surface of the side plate 41, a second inclined panel 82 located on the upper end surface of the front plate 42, and an air outlet plate 83 located on the upper ends of the second inclined panel 82 and the second right-angle trapezoidal plate 81, wherein a plurality of air outlet slots 84 are provided in the air outlet plate 83; the heat dissipation fan 3 is installed at the air outlet slots 84; A second ventilation slot 9 is provided at the output end of the heat dissipation fan 3 , and an array of the second ventilation slots 9 is provided on the back plate 14 of the cabinet 1 .

[0010] Furthermore: third ventilation slots 10 are arranged in an array on both sides of the lower part of the cabinet 1; and fourth ventilation slots 11 are arranged near the top of the cabinet 1.

[0011] Further: the cabinet body 1 is composed of a frame body 12 and a top plate 13, a bottom plate, a back plate 14, a side panel, and a front door arranged on the frame body 12; the frame body 12 is composed of four vertical beams, a bottom frame located at the bottom of the vertical beams, two horizontal beams 121 located at the upper ends of the vertical beams, and two longitudinal beams 122; the fourth ventilation slot 11 is arranged on the longitudinal beam 122.

[0012] Furthermore: the longitudinal beam 122 is formed by four steel plates 15 to form a square tube; the width of the steel plate 15 located at the bottom and one side is equal to half of the steel plate 15 located at the top and the other side; mounting plates 16 are provided at the lower end of the steel plate 15 at the bottom and the side of the steel plate 15 at one side.

[0013] At the same time, the device is also provided with a control method, which is: S1, using initial drive parameters to try to start the frequency conversion device; S2. If the startup is successful, the corresponding relationship between the driving parameters used and the input parameters of the frequency conversion device is recorded; S3. If the startup fails or the operation is abnormal, the drive parameters are updated and the frequency conversion device is continuously tried to be started until the frequency conversion device is successfully started and operates normally; S4. Record the correspondence between the updated driving parameters that are successfully started and run normally and the input parameters of the frequency conversion device.

[0014] Under certain input parameters, the compressor is first started using the initial drive parameters. If the start fails, the compressor drive parameters are updated and the start attempt continues. If the start still fails, the process is repeated until the start succeeds. If the start succeeds, the input parameters and the corresponding output drive parameters are memorized for the next start. If the input parameters remain unchanged during the next start, the same set of drive parameters will be used. If the input parameters change, the drive identification judgment will be re-performed. After the start succeeds, the input parameters and the corresponding output drive parameters will also be memorized.

[0015] Therefore, the output drive control parameters under different input parameters coexist and form a corresponding relationship between input and output. When the same input parameters are encountered subsequently, the corresponding output drive parameters are directly called to facilitate rapid startup of the compressor.

[0016] If the startup fails, the analysis program is entered, which includes the analysis of the ambient temperature in the cabinet 1. If the ambient temperature in the cabinet 1 is too high and exceeds the red line, the reason for the startup failure is written as too high ambient temperature; The equipment is set with a reasonable working temperature. However, when the frequency converter cabinet controls the compressor to work, the compressor power increases, which means that the power of the frequency converter cabinet must also increase, and the ambient temperature inside the cabinet increases, so the cabinet needs to be controlled within a reasonable range.

[0017] The beneficial effects are: In this device, the frequency conversion module is arranged on the front end surface of the front plate 42 in the negative pressure space 4. When the frequency conversion module is working, a large amount of heat generated by the integrated circuit board of the frequency conversion module will be conducted into the negative pressure space 4 through the front plate 42, so as to prevent the heat generated by the frequency conversion module from diffusing into the interior of the cabinet 1; thereby causing the high temperature to affect the electronic components installed on the integrated circuit board.

[0018] At the same time, in this device, an array of air inlet holes 43 penetrating the front plate 42 is arranged on the front plate 42. When the heat dissipation fan 3 is working, a high-speed airflow is formed in the negative pressure space 4. As soon as the heat generated by the electronic components and the integrated chip is transferred to the air in the cabinet 1, the formed hot air will directly enter the negative pressure space 4 through the air inlet holes 43, preventing the electronic components and the integrated circuit board from being in the hot air for a long time, thereby achieving the effect of rapid heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 An exploded view of the present invention; Figure 3This is a diagram of the negative pressure space structure of the present invention; Figure 4 It is a structural diagram of the radiator of the present invention; Figure 5 It is a structural diagram of the longitudinal beam of the present invention.

[0021] Description of reference numerals: 1. Cabinet; 2. Heat dissipation component; 3. Heat dissipation fan; 4. Negative pressure space; 41. Side panel; 42. Front panel; 43. Air inlet; 5. Radiator; 6. First air induction mechanism; 61. First right-angle trapezoidal plate; 62. First inclined panel; 63. Air inlet plate; 64. Air inlet slot; 7. First ventilation slot; 8. Second air induction mechanism; 81. Second right-angle trapezoidal plate; 82. Second inclined panel; 83. Air outlet plate; 84. Air outlet slot; 9. Second ventilation slot; 10. Third ventilation slot; 11. Fourth ventilation slot; 12. Frame; 121. Crossbeam; 122. Longitudinal beam; 13. Top plate; 14. Back plate; 15. Steel plate; 16. Mounting plate. DETAILED DESCRIPTION

[0022] 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 should not be understood as limiting the present invention.

[0023] It should be noted that, in the description of the present invention, unless otherwise specified, “plurality” means two or more than two; the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front end”, “rear end”, “head” and “tail” are 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 cannot be understood as a limitation on the present invention.

[0024] Furthermore, the terms “first,” “second,” “third,” etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0025] Meanwhile, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-5 This is an embodiment of an assembled frequency conversion control device and method of the present invention. See also Figure 1 , Figure 2 , Figure 3 ; It includes a cabinet 1 and a heat dissipation component 2 arranged in the cabinet 1; the heat dissipation component 2 includes a heat dissipation fan 3 located at the top of the cabinet 1, an air inlet duct located at the bottom of the cabinet 1, and a negative pressure space 4 located between the heat dissipation fan 3 and the air inlet duct; the negative pressure space 4 is composed of a back panel 14, two side panels 41 and a front panel 42 of the cabinet 1, the lower part of the negative pressure space 4 is connected to the air inlet duct, and the upper part is provided with the heat dissipation fan 3; the front panel 42 is arrayed with air inlet holes 43 that penetrate the front panel 42.

[0027] When the frequency conversion control device of the present device is in use, the frequency conversion module will generate a large amount of heat, and the temperature of the air inside the cabinet will rise; at this time, the heat dissipation fan 3 in the heat dissipation component 2 can be started, and the heat dissipation fan 3 draws air from the air inlet duct to form an airflow. The airflow passes through the negative pressure space 4 and is finally output from the output end of the heat dissipation fan 3, so that the hot air in the cabinet 1 can be drawn away.

[0028] However, considering that the heat generated by the integrated circuit board and the electronic components in the frequency conversion module during operation will be transferred to the air in the cabinet 1, if the air is not discharged quickly, the integrated circuit board and the electronic components will be in the hot air for a long time.

[0029] In this device, the frequency conversion module is arranged on the front end surface of the front plate 42 in the negative pressure space 4. When the frequency conversion module is working, a large amount of heat generated by the integrated circuit board of the frequency conversion module will be conducted into the negative pressure space 4 through the front plate 42, so as to prevent the heat generated by the frequency conversion module from diffusing into the interior of the cabinet 1; thereby causing the high temperature to affect the electronic components installed on the integrated circuit board.

[0030] At the same time, in this device, an array of air inlet holes 43 penetrating the front plate 42 is arranged on the front plate 42. When the heat dissipation fan 3 is working, a high-speed airflow is formed in the negative pressure space 4. As soon as the heat generated by the electronic components and the integrated chip is transferred to the air in the cabinet 1, the formed hot air will directly enter the negative pressure space 4 through the air inlet holes 43, preventing the electronic components and the integrated circuit board from being in the hot air for a long time, thereby achieving the effect of rapid heat dissipation.

[0031] The heat dissipation fan 3 in the device itself will also generate a certain amount of heat during operation. It is arranged on the top of the cabinet 1, and the heat emitted will directly rise up and will not fall into the cabinet 1.

[0032] The array of the air inlet holes 43 is divided into a vertical array and a rectangular array, and the air inlet holes 43 of the rectangular array are located above the air inlet holes 43 of the vertical array.

[0033] The array of the air inlet holes 43 is mainly for the heat dissipation effect of the two components. The rectangular array of air inlet holes 43 is mainly for the heat dissipation of the frequency conversion module, and the vertical array of air inlet holes 43 is mainly for the heat dissipation of the brake resistor.

[0034] See also Figure 3 , Figure 5 A radiator 5 is also provided in the negative pressure space 4, and the radiator 5 is composed of a plurality of cooling fins.

[0035] In order to further improve the heat dissipation efficiency in the present device, a radiator 5 is arranged in the negative pressure space 4. The arrangement of the radiator 5 can absorb a large amount of heat when the airflow passes through the radiator 5. At the same time, the radiator 5 is fixed on the back plate 14 of the cabinet 1. At the connection portion between the radiator 5 and the back plate 14 of the cabinet 1, the material of the back plate 14 is a thermally conductive aluminum plate with a small specific heat capacity; the heat absorbed by the radiator 5 can be transferred through the back plate 14 of the cabinet 1, thereby improving the heat dissipation efficiency.

[0036] A first air induction mechanism 6 is further provided between the negative pressure space 4 and the air inlet duct, and the first air induction mechanism 6 comprises a first right-angled trapezoidal plate 61 located at the lower end surface of the side plate 41, a first inclined plate 62 located at the lower end surface of the front plate 42, and an air inlet plate 63 located at the lower ends of the first inclined plate 62 and the first right-angled trapezoidal plate 61, and a plurality of air inlet slots 64 are provided in the air inlet plate 63; The rear end surface of the first air induction mechanism 6 is formed by the back plate 14 of the cabinet 1 , and first ventilation slots 7 are arranged in an array on the back plate 14 of the cabinet 1 at the position of the first air induction mechanism 6 .

[0037] When the first air induction mechanism 6 in the device is in use, the airflow enters through the air inlet slot 64, and then hits the first inclined panel 62, and then enters the negative pressure space 4. At this time, the area of ​​airflow is reduced and the airflow speed is increased, so as to achieve the purpose of improving the heat dissipation efficiency. The first right-angled trapezoidal plate 61 of the device is used to set the first inclined panel 62. At the same time, the first right-angle trapezoidal plate 61, the first inclined plate 62, and the air inlet plate 63 combined with the back plate 14 of the cabinet 1 also form a space. In addition to the air inlet slot 64 on the air inlet plate 63, the space also has a first ventilation slot 7 on the back plate 14. When the heat dissipation fan 3 is started, the air inside the cabinet 1 enters through the air inlet slot 64, and the air outside the cabinet 1 enters through the first ventilation slot 7. The purpose is to prevent the air in the cabinet 1 from being completely sucked out under high power conditions and to use external air for replenishment; to quickly take away the hot air in the cabinet 1.

[0038] A second air induction mechanism 8 is further provided between the negative pressure space 4 and the heat dissipation fan 3. The second air induction mechanism 8 comprises a second right-angle trapezoidal plate 81 located on the upper end surface of the side plate 41, a second inclined plate 82 located on the upper end surface of the front plate 42, and an air outlet plate 83 located on the upper ends of the second inclined plate 82 and the second right-angle trapezoidal plate 81. A plurality of air outlet slots 84 are provided in the air outlet plate 83. The heat dissipation fan 3 is installed at the air outlet slots 84. A second ventilation slot 9 is provided at the output end of the heat dissipation fan 3 , and the second ventilation slots 9 are arrayed on the back plate 14 of the cabinet 1 .

[0039] The second air induction mechanism 8 of the device has a structure similar to the first air induction mechanism 6, but its function is to facilitate the air to enter the heat dissipation fan. The second right-angle trapezoidal plate 81, the second inclined plate 82, and the air outlet plate 83 are combined with the back plate 14 of the cabinet 1 to form a space, which can collect hot compressed hot air and help the heat dissipation fan 3 to extract hot air.

[0040] At the same time, the second ventilation slots 9 on the back plate 14 of the cabinet 1 can help the hot air output from the output end of the heat dissipation fan 3 to be discharged outside the cabinet 1.

[0041] The third ventilation slots 10 are arranged in an array on both sides of the lower part of the cabinet 1 ; and the fourth ventilation slots 11 are arranged near the top of the cabinet 1 .

[0042] The third ventilation slot 10 in the present device has two functions: it is used for heat dissipation when the heat dissipation fan 3 is not started; it is used for replenishing air when the heat dissipation fan 3 is started; the fourth ventilation slot 11 has the same function as the third ventilation slot 10, but due to its setting position, the fourth ventilation slot 11 is mainly used for heat dissipation.

[0043] See also Figure 1 , Figure 2 The cabinet body 1 is composed of a frame body 12 and a top plate 13, a bottom plate, a back plate 14, a side panel, and a front door arranged on the frame body 12; the frame body 12 is composed of four vertical beams, a bottom frame located at the bottom of the vertical beams, two horizontal beams 121 located at the upper ends of the vertical beams, and two longitudinal beams 122; the fourth ventilation slot 11 is arranged on the longitudinal beam 122.

[0044] The frame 12 in the present device is a normal cabinet 1 structure, but the present device has made improvements on the frame 12, making the two horizontal beams 121 and the two longitudinal beams 122 located at the upper ends of the vertical beams 121 detachable, and at the same time setting the fourth ventilation slot 11 on the longitudinal beams 122; on the one hand, it is convenient to disassemble for cleaning, and on the other hand, it plays the role of a supporting structure.

[0045] The main consideration for the location of the fourth ventilation slot 11 of the present device is the horizontal height at which the heat dissipation fan 3 is set. The fourth ventilation slot 11 needs to be set above the heat dissipation fan 3. The applicant considers that setting it on the top plate 13 of the cabinet 1 is the best location, but after being set on the top plate 13, dust will directly fall into the cabinet 1, so it is chosen to be set on the side. In the prior art, it is basically set on the side panel close to the cross beam 121 or the longitudinal beam 122, so that the hot air will still gather at the top of the cabinet 1, which is not conducive to dissipation. Therefore, in the present device, it is set on the longitudinal beam 122, and it can also be set on the cross beam 121, so that the hot air close to the top plate 13 will also flow out through the fourth ventilation slot 11 on the longitudinal beam 122 or the cross beam 121.

[0046] See also Figure 5 The longitudinal beam 122 is formed by four steel plates 15 to form a square tube; the width of the steel plates 15 at the bottom and one side is equal to half of the steel plates 15 at the top and the other side; mounting plates 16 are provided at the lower end of the steel plate 15 at the bottom and the side of the steel plate 15 at one side.

[0047] The longitudinal beam 122 of the present device is improved based on the normal square tube. Since the fourth ventilation slot 11 is provided, an opening is provided in the normal square tube so that the air in the cabinet 1 can flow out through the fourth ventilation slot 11. The air can enter the interior of the square tube through the opening and then be output through the fourth ventilation slot 11.

[0048] The installation plate 16 located at the lower end of the bottom steel plate 15 is mainly used for the installation and disassembly of the entire longitudinal beam 122, and the installation plate 16 located on the side of the side steel plate 15 is mainly used to facilitate the installation and disassembly of the top plate 13.

[0049] At the same time, the device is also provided with a control method, which is: S1, using initial drive parameters to try to start the frequency conversion device; S2. If the startup is successful, the corresponding relationship between the driving parameters used and the input parameters of the frequency conversion device is recorded; S3. If the startup fails or the operation is abnormal, the drive parameters are updated and the frequency conversion device is continuously tried to be started until the frequency conversion device is successfully started and operates normally; S4. Record the correspondence between the updated driving parameters that are successfully started and run normally and the input parameters of the frequency conversion device.

[0050] Under certain input parameters, the compressor is first started using the initial drive parameters. If the start fails, the compressor drive parameters are updated and the start attempt continues. If the start still fails, the process is repeated until the start succeeds. If the start succeeds, the input parameters and the corresponding output drive parameters are memorized for the next start. If the input parameters remain unchanged during the next start, the same set of drive parameters will be used. If the input parameters change, the drive identification judgment will be performed again. After the start succeeds, the input parameters and the corresponding output drive parameters will also be memorized.

[0051] Therefore, the output drive control parameters under different input parameters coexist and form a corresponding relationship between input and output. When the same input parameters are encountered subsequently, the corresponding output drive parameters are directly called to facilitate rapid startup of the compressor.

[0052] If the startup fails, the analysis program is entered, which includes the analysis of the ambient temperature in the cabinet 1. If the ambient temperature in the cabinet 1 is too high and exceeds the red line, the reason for the startup failure is written as too high ambient temperature; The equipment is set with a reasonable working temperature. However, when the frequency converter cabinet controls the compressor to work, the compressor power increases, which means that the power of the frequency converter cabinet must also increase, and the ambient temperature inside the cabinet increases, so the cabinet needs to be controlled within a reasonable range.

[0053] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An assembled frequency conversion control device, Features: The invention comprises a cabinet (1) and a heat dissipation assembly (2) arranged in the cabinet (1); the heat dissipation assembly (2) comprises a heat dissipation fan (3) located at the top of the cabinet (1), an air inlet duct located at the bottom of the cabinet (1), and a negative pressure space (4) located between the heat dissipation fan (3) and the air inlet duct; the negative pressure space (4) is composed of a back panel (14), two side panels (41) and a front panel (42) of the cabinet (1); the lower part of the negative pressure space (4) is connected to the air inlet duct and the upper part is provided with the heat dissipation fan (3); the front panel (42) is provided with an array of air inlet holes (43) penetrating the front panel (42).

2. The assembled frequency conversion control device according to claim 1, Features: The array of the air inlet holes (43) is divided into a vertical array and a rectangular array, and the air inlet holes (43) of the rectangular array are located above the air inlet holes (43) of the vertical array.

3. The assembled frequency conversion control device according to claim 2, Features: A radiator (5) is also provided in the negative pressure space (4), and the radiator (5) is composed of a plurality of radiating fins.

4. The assembled frequency conversion control device according to claim 3, Features: A first air induction mechanism (6) is also provided between the negative pressure space (4) and the air inlet duct, the first air induction mechanism (6) comprising a first right-angled trapezoidal plate (61) located at the lower end surface of the side plate (41), a first inclined panel (62) located at the lower end surface of the front plate (42), and an air inlet plate (63) located at the lower ends of the first inclined panel (62) and the first right-angled trapezoidal plate (61), wherein a plurality of air inlet slots (64) are provided in the air inlet plate (63); and a rear end surface of the first air induction mechanism (6) is formed by the back panel (14) of the cabinet body (1), and a first ventilation slot (7) is arranged on the back panel (14) of the cabinet body (1) at the position of the first air induction mechanism (6).

5. The assembled frequency conversion control device according to claim 4, Features: A second air induction mechanism (8) is also provided between the negative pressure space (4) and the heat dissipation fan (3), the second air induction mechanism (8) comprising a second right-angled trapezoidal plate (81) located on the upper end surface of the side plate (41), a second inclined panel (82) located on the upper end surface of the front plate (42), and an air outlet plate (83) located on the upper ends of the second inclined panel (82) and the second right-angled trapezoidal plate (81), the air outlet plate (83) being provided with a plurality of air outlet slots (84); the heat dissipation fan (3) is mounted at the air outlet slots (84); and a second ventilation slot (9) is provided at the output end of the heat dissipation fan (3), the second ventilation slot (9) being arranged in an array on the back plate (14) of the cabinet body (1).

6. The assembled frequency conversion control device according to claim 5, Features: Third ventilation slots (10) are arranged in an array on both sides of the lower part of the cabinet (1); and fourth ventilation slots (11) are arranged near the top of the cabinet (1).

7. The assembled frequency conversion control device according to claim 6, Features: The cabinet body (1) is composed of a frame body (12) and a top plate (13), a bottom plate, a back plate (14), a side plate, and a front door arranged on the frame body (12); the frame body (12) is composed of four vertical beams, a bottom frame located at the bottom of the vertical beams, two horizontal beams (121) located at the upper ends of the vertical beams, and two longitudinal beams (122); the fourth ventilation slot (11) is arranged on the longitudinal beam (122).

8. The assembled frequency conversion control device according to claim 7, Features: The longitudinal beam (122) is formed by four steel plates (15) enclosing each other to form a square tube; the width of the steel plates (15) at the bottom and one side is equal to half of the width of the steel plates (15) at the top and the other side; and mounting plates (16) are provided at the lower end of the steel plate (15) at the bottom and the side of the steel plate (15) at one side.

9. An assembled frequency conversion control method, Features: The frequency conversion control device comprises any one of claims 1 to 8 above; the control method of the frequency conversion control device comprises: S1, using initial drive parameters to try to start the frequency conversion control device; S2, if the start-up is successful, recording the correspondence between the drive parameters used and the input parameters of the frequency conversion device; S3, if the start-up fails or the operation is abnormal, updating the drive parameters and continuing to try to start the frequency conversion device until the frequency conversion device is successfully started and operates normally; S4. Record the correspondence between the updated driving parameters that are successfully started and run normally and the input parameters of the frequency conversion device.

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