Frequency converter and air conditioning equipment

Abstract

The invention provides a frequency converter and air conditioning equipment. A heat dissipation box and a frequency conversion mainboard are arranged in a shell of the frequency converter, a first ventilation channel is formed in the side, away from the heat dissipation box, of the frequency conversion mainboard, a second ventilation channel is formed in the heat dissipation box, and a condensate pipe of the frequency converter is communicated with the second ventilation channel so as to provide condensate water for the second ventilation channel to assist in cooling. In addition, an air outlet of an air duct of the frequency converter is communicated with a second ventilation channel, an air inlet of the air duct is communicated with a first ventilation channel, an air inlet of the first ventilation channel is communicated with an air inlet in the shell, an air outlet of the second ventilation channel is communicated with an air outlet in the shell, and a fan is arranged in the air duct. The air inlet is used for driving air in the air channel to flow from the air inlet to the air outlet. The controller can control the flow speed of the air in the air duct by controlling the rotating speed of the fan, and further control the flow speed of the air from the air inlet to the air outlet of the shell, so that step-by-step cooling and heat dissipation of the frequency conversion mainboard are realized.

Description

Technical Field

[0001] The present disclosure relates to the technical field of frequency converters, and in particular, to a control frequency converter and an air conditioning device. Background Art

[0002] A variable frequency air conditioner refers to an air conditioner equipped with a frequency converter. The compressor is the heart of the air conditioner, and its rotational speed directly affects the use efficiency of the air conditioner. The frequency converter is a control system used to control and adjust the rotational speed of the compressor so that it is always in the best rotational speed state, thereby improving the energy efficiency ratio. The variable frequency main board in the frequency converter belongs to the main components of the frequency converter, and it generates relatively serious heat. The frequency converters of related technologies usually cool and dissipate heat from the whole frequency converter, resulting in poor cooling and heat dissipation effects of the variable frequency main board, and it is not possible to effectively cool the variable frequency main board step by step during use. Therefore, not only will it cause waste of energy, but also the overall service life of the frequency converter will be affected due to the poor cooling effect. Summary of the Invention

[0003] In view of this, in order to solve the technical problem of poor cooling and heat dissipation of the variable frequency main board in the prior art, the present disclosure provides a frequency converter and an air conditioning device.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a frequency converter, which includes a housing, a variable frequency main board, and a heat dissipation box. The variable frequency main board and the heat dissipation box are located in the housing, and a first ventilation channel is provided on a side of the variable frequency main board facing away from the heat dissipation box, and an air inlet of the first ventilation channel is communicated with an air inlet on the housing;

[0005] A second ventilation channel is provided in the heat dissipation box. The frequency converter further includes a condensate water pipe, an air duct, a fan, and a controller. An air outlet of the air duct is communicated with the second ventilation channel, an air inlet of the air duct is communicated with the first ventilation channel, an air outlet of the second ventilation channel is communicated with an air outlet on the housing, the condensate water pipe is communicated with the second ventilation channel, and the condensate water pipe is used to supply condensate water to the second ventilation channel;

[0006] The fan is arranged in the air duct and is used to drive the gas in the air duct to flow from its air inlet to the air outlet after being started;

[0007] The controller is electrically connected to the fan and is used to control the rotational speed of the fan.

[0008] In an optional embodiment, a plurality of layers of staggered partitions are provided in the heat dissipation box, and the plurality of layers of partitions form the second ventilation channel. A plurality of first heat dissipation ribs are provided on a side of the partition facing the condensate water pipe;

[0009] A plurality of droppers are further arranged in the heat dissipation box. The condensate water pipe is communicated with the second ventilation channel through the plurality of droppers, and the water dripping ports of the plurality of droppers respectively correspond to the intervals between the plurality of first heat dissipation fins, and are used for discharging condensate water into the intervals between the plurality of first heat dissipation fins.

[0010] In an optional embodiment, the frequency converter includes a water collecting box. The upper end of the water collecting box is communicated with the condensate water pipe, and the lower end of the water collecting box is communicated with the plurality of droppers to communicate the condensate water pipe with the plurality of droppers.

[0011] In an optional embodiment, the frequency converter includes a second heat dissipation fin, and the second heat dissipation fin is fixedly connected to the inner side wall of the housing to form the first ventilation channel;

[0012] Wherein, a first confluence groove is formed in the second heat dissipation fin at a position of the second heat dissipation fin close to the air inlet of the air duct; and / or, a second confluence groove is formed in the second heat dissipation fin at a position of the second heat dissipation fin close to the air inlet of the housing.

[0013] In an optional embodiment,

[0014] The first side of the heat dissipation box is adhesively connected to the inner wall of the housing through a first heat conductive sticker, and / or, the second side of the heat dissipation box is adhesively connected to the frequency conversion main board through a second heat conductive sticker;

[0015] Wherein, the first side and the second side are two opposite sides of the heat dissipation box.

[0016] In an optional embodiment, the first heat conductive sticker includes a first silicone grease sticker, and / or, the second heat conductive sticker includes a second silicone grease sticker.

[0017] In an optional embodiment, a filter box is arranged outside the air inlet of the housing. The size of the filter box corresponds to the air inlet of the housing and is used for filtering the gas passing through the air inlet.

[0018] In an optional embodiment, the filter box includes a body, a filter screen, and a first cleaning part. The filter screen is arranged at the middle position of the filter box and is fixedly connected to the body. The first cleaning parts are respectively arranged on both sides of the filter screen. Barbed villi are arranged on one side of the first cleaning part facing the filter screen, and the first cleaning part is movably connected to the body;

[0019] Wherein, when the first cleaning part moves relative to the body, the barbed villi of the first cleaning part clean the filter screen.

[0020] In an alternative embodiment, the frequency converter includes a stabilizer bar, which is fixedly connected to the first cleaning part, and a mating hole corresponding to the stabilizer bar is provided on the body, and the stabilizer bar is movably connected to the body through the mating hole.

[0021] In an alternative embodiment, the first cleaning part includes a fixed frame and a fluff net, the fluff net is fixed to the fixed frame, and barbed fluff is provided on one side of the fluff net facing the filter screen.

[0022] In an alternative embodiment, a second cleaning part is provided on the side of the fluff net facing away from the filter screen, barbed fluff is provided on one side of the second cleaning part facing the fluff net, and the second cleaning part is fixedly connected to the body;

[0023] Wherein, when the first cleaning part moves relative to the body, the barbed fluff of the second cleaning part cleans the fluff net.

[0024] In an alternative embodiment, the frequency converter includes a driving mechanism, the driving structure is fixedly connected to the first cleaning part, and is used to drive the first cleaning part to move relative to the body.

[0025] In an alternative embodiment, the driving mechanism includes a connecting part, a transmission part and a driving part, the connecting part is fixedly connected to the first cleaning part, and the driving part is connected to the connecting part through the transmission part, and is used to drive the connecting part to drive the first cleaning part to move.

[0026] In an alternative embodiment, the driving part includes a pneumatic rotor, the pneumatic rotor is arranged at the air outlet of the housing, the gas discharged from the housing drives the pneumatic rotor to rotate, and the rotation of the pneumatic rotor is transmitted to the connecting part through the transmission part, so that the connecting part drives the first cleaning part to move.

[0027] According to a second aspect of the embodiments of the present disclosure, an air conditioning device is provided, and the air conditioning device includes the frequency converter according to any one of the first aspect.

[0028] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: In the present disclosure, a heat dissipation box and a variable frequency main board are arranged inside the housing of the frequency converter. A first ventilation channel is arranged on the side of the variable frequency main board facing away from the heat dissipation box, and a second ventilation channel is arranged inside the heat dissipation box. Moreover, the condensate water pipe of the frequency converter is communicated with the second channel to supply condensate water to the second ventilation channel to assist in cooling. In addition, the air outlet of the air duct of the frequency converter is communicated with the second ventilation channel, the air inlet of the air duct is communicated with the first ventilation channel, the air inlet of the first ventilation channel is communicated with the air inlet on the housing, and the air outlet of the second ventilation channel is communicated with the air outlet on the housing. A fan is arranged inside the air duct to drive the gas in the air duct to flow from its air inlet to the air outlet. By controlling the rotation speed of the fan, the controller can control the flow rate of the gas in the air duct, and then control the flow rate of the gas from the air inlet of the housing to the air outlet, so as to realize the step-by-step cooling and heat dissipation of the variable frequency main board. Moreover, since the first ventilation channel and the second ventilation channel are respectively located on both sides of the variable frequency main board, the cooling and heat dissipation effect of the variable frequency main board can be better improved. In addition, the condensate water in the second ventilation channel can further improve the cooling and heat dissipation effect of the variable frequency main board. That is, the present disclosure can effectively cool the variable frequency main board step by step, better avoid the waste of energy, and can better ensure the cooling and heat dissipation effect of the variable frequency main board, and extend the service life of the entire frequency converter.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0033] Figure 1 is an exploded schematic view of a frequency converter shown according to an exemplary embodiment.

[0034] Figure 2 is a schematic view of the inside of a heat dissipation box shown according to an exemplary embodiment.

[0035] Figure 3 is a partial schematic view of the interior of a heat dissipation box shown according to an exemplary embodiment.

[0036] Figure 4 is a schematic view of the interior of a housing shown according to an exemplary embodiment.

[0037] Figure 5 is another schematic view of the interior of a housing shown according to an exemplary embodiment.

[0038] Figure 6 is a schematic view of an inverter shown according to an exemplary embodiment.

[0039] Figure 7 is a schematic view of the inverter from another angle shown according to an exemplary embodiment.

[0040] Figure 8 is an enlarged schematic view of the position of a filter box in an inverter shown according to an exemplary embodiment.

[0041] Figure 9 is another enlarged schematic view of the position of a filter box in an inverter shown according to an exemplary embodiment.

[0042] Figure 10 is a disassembled structural schematic view of a filter box shown according to an exemplary embodiment.

[0043] Figure 11 is a schematic view of a transmission part shown according to an exemplary embodiment.

[0044] Figure 12 is a schematic view of the positions of a first cleaning part and a second cleaning part shown according to an exemplary embodiment.

[0045] Figure 13 is another schematic view of a transmission part shown according to an exemplary embodiment.

[0046] Figure 14 is a schematic view of a transmission part and a driving part shown according to an exemplary embodiment.

[0047] Wherein:

[0048] 1. Housing; 2. Variable frequency main board; 3. Heat dissipation box; 31. Partition; 32. First heat dissipation fin; 4. Condensate water pipe; 5. Fan; 6. Drip pipe; 7. Water collection box; 8. Second heat dissipation fin; 81. First confluence trough; 82. Second confluence trough; 9. First heat conducting sticker; 10. Second heat conducting sticker; 11. Filter box; 111. Body; 112. Filter net; 113. First cleaning part; 1131. Fixed frame; 1132. Fluffy net; 114. Second cleaning part; 12. Stabilizing rod; 13. Driving mechanism; 131. Connecting part; 1311. Chute; 132. Transmission part; 1321. Transmission wheel; 1322. Transmission rod; 1323. Turbine; 1324. Worm; 1325. Eccentric shaft; 1326. Turbine box; 1327. Transmission belt; 133. Driving part; 14. Fixed column; 15. Support column; 16. Gasket; 17. Main board interface; 18. Fixed bolt;

[0049] 100. First ventilation channel; 200. Second ventilation channel; 300. Air duct; 400. Air outlet channel; Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0051] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0052] For ease of description, spatial relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "upper", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or change in motion state, then these directional indications will change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "upper than other elements or features". Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0053] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. Therefore, only the components related to the present application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0054] The embodiments of the present application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, rather than for limiting the protection scope of the present application.

[0055] To solve the technical problem of poor cooling and heat dissipation of the variable-frequency main board in the prior art, the present disclosure provides an inverter and an air-conditioning device.

[0056] In the present disclosure, a heat dissipation box and a variable frequency main board are arranged inside the housing of the frequency converter. A first ventilation channel is arranged on the side of the variable frequency main board facing away from the heat dissipation box, and a second ventilation channel is arranged inside the heat dissipation box. Moreover, the condensate water pipe of the frequency converter is communicated with the second ventilation channel to supply condensate water to the second ventilation channel for auxiliary cooling. In addition, the air outlet of the air duct of the frequency converter is communicated with the second ventilation channel, the air inlet of the air duct is communicated with the first ventilation channel, the air inlet of the first ventilation channel is communicated with the air inlet on the housing, and the air outlet of the second ventilation channel is communicated with the air outlet on the housing. A fan is arranged inside the air duct to drive the gas inside the air duct to flow from its air inlet to the air outlet. By controlling the rotation speed of the fan, the controller can control the flow rate of the gas inside the air duct, and further control the flow rate of the gas from the air inlet to the air outlet of the housing, so as to realize the step-by-step cooling and heat dissipation of the variable frequency main board. Moreover, since the first ventilation channel and the second ventilation channel are respectively located on both sides of the variable frequency main board, the cooling and heat dissipation effect on the variable frequency main board can be better improved. In addition, the condensate water in the second ventilation channel can further improve the cooling and heat dissipation effect on the variable frequency main board. That is, the present disclosure can effectively cool the variable frequency main board step by step, better avoid the waste of energy, and can also better ensure the cooling and heat dissipation effect on the variable frequency main board, and extend the service life of the entire frequency converter.

[0057] In an exemplary embodiment, an air conditioning device and its frequency converter are provided. The air conditioning device can be, for example, an air conditioner, or an air purifier or other device that can adjust air parameters, and no limitation is made thereto.

[0058] Among them, referring to Figures 1 to 7 As shown, the frequency converter may include a housing 1, a variable frequency main board 2, and a heat dissipation box 3. The variable frequency main board 2 and the heat dissipation box 3 are located inside the housing 1, and a first ventilation channel 100 is arranged on the side of the variable frequency main board 2 facing away from the heat dissipation box 3. The air inlet of the first ventilation channel 100 is communicated with the air inlet on the housing 1. That is, in this frequency converter, the gas outside the frequency converter enters the first ventilation channel 100 through the air inlet on the housing 1.

[0059] Among them, a second ventilation channel 200 is arranged inside the heat dissipation box 3. The frequency converter may further include an air duct 300. The air outlet of the air duct 300 is communicated with the second ventilation channel 200, the air inlet of the air duct 300 is communicated with the first ventilation channel 100, and the air outlet of the second ventilation channel 200 is communicated with the air outlet on the housing 1. That is to say, the gas outside the frequency converter enters the first ventilation channel 100 through the air inlet on the housing 1 first, then enters the second ventilation channel 200 after passing through the air duct 300, and then is discharged from the air outlet of the housing 1. The first ventilation channel 100 and the second ventilation channel 200 are respectively located on both sides of the variable frequency main board 2, and the cooling and heat dissipation of the variable frequency main board 2 can be well realized.

[0060] Among them, the frequency converter further includes a condensate pipe 4, which is communicated with the second ventilation channel 200. The condensate pipe 4 is used to supply condensate water to the second ventilation channel 200, which can assist in cooling to improve the cooling and heat dissipation effect of the second ventilation channel 200 on the frequency conversion main board 2. It should be noted that the condensate pipe 4 can introduce the condensate water of the air conditioning equipment into the second ventilation channel 200 to realize the rational utilization of the condensate water and further save resources.

[0061] Among them, the frequency converter further includes a fan 5 and a controller (not shown in the figure). The fan 5 is arranged in the air duct 300 and is used to drive the gas in the air duct 300 to flow from its air inlet to the air outlet after starting. The controller is electrically connected to the fan 5 and is used to control the rotation speed of the fan 5. In this embodiment, the controller controls the flow rate of the heat dissipation air flow by controlling the rotation speed of the fan 5, so as to realize the step-by-step cooling of the frequency conversion main board 2.

[0062] For example, a temperature sensor (not shown in the figure) can be installed inside the frequency converter to monitor the temperature of key parts inside the frequency converter, such as the power module and the reactor, in real time. The fan 5 can be a ducted fan 5. When the temperature sensor detects that the temperature rises to the set threshold, it will send a signal to the controller. The controller can adjust the rotation speed of the fan 5 according to the received signal. Among them, when the temperature detected by the temperature sensor rises, the controller can increase the rotation speed of the fan 5 to increase the air flow rate to take away more heat and improve the cooling and heat dissipation effect. After the fan 5 starts, it will generate negative pressure inside the housing 1 of the frequency converter, suck in outside air through the air inlet of the housing 1 for ventilation, and initially absorb and extract the heat of the air inside the frequency converter through the first ventilation channel 100. Then the air enters the second ventilation channel 200 inside the heat dissipation box 3 through the air duct 300. At the same time, the condensate pipe 4 can discharge the condensate water of the air conditioning equipment into the second ventilation channel 200, and take away the heat on its surface through evaporation to increase the heat dissipation effect.

[0063] In this embodiment, the first ventilation channel 100 and the second ventilation channel 200 are innovatively arranged on both sides of the frequency conversion main board 2 respectively to form a layered heat dissipation structure. The outside air enters the first ventilation channel 100 through the air inlet of the housing 1 to initially dissipate the heat on one side of the frequency conversion main board 2 and extract part of the heat. Then the air enters the second ventilation channel 200 through the air duct 300 to further take away the heat on the other side of the frequency conversion main board 2, realizing the all-round and efficient cooling of the frequency conversion main board 2. This layered heat dissipation method greatly improves the heat dissipation efficiency compared with the traditional single heat dissipation path, effectively avoids problems such as performance degradation and component damage of the frequency conversion main board 2 caused by overheating, ensures the stable operation of the frequency converter, and extends the service life of the equipment.

[0064] In addition, in this embodiment, the heat dissipation is assisted by the condensed water of the air conditioning equipment, and the principle of water evaporation absorbing heat is used to further enhance the heat dissipation effect. When the air flows through the second ventilation channel 200, the condensed water evaporates and takes away a large amount of heat, lowering the air temperature, thereby improving the heat dissipation capacity of the frequency conversion mainboard 2. At the same time, the condensed water pipe 4 can introduce the condensed water generated by the air conditioning equipment itself (it can also be other condensed water sources, which is not limited to this) into the heat dissipation system, realizing the recycling of condensed water, avoiding the waste of water resources, complying with the concept of energy conservation and environmental protection, while reducing the operating cost of the equipment, and improving the energy utilization efficiency of the entire air conditioning equipment.

[0065] In addition, this embodiment is equipped with a fan 5 and a controller, and the temperature of key parts in the frequency converter is monitored in real time through a temperature sensor. The controller intelligently adjusts the speed of the fan 5 according to the temperature signal. When the temperature rises, the controller increases the speed of the fan 5, increases the air flow, and quickly takes away more heat; when the temperature drops, the speed of the fan 5 is correspondingly reduced to reduce energy consumption. This intelligent speed regulation mechanism realizes the precise step-by-step cooling of the frequency conversion mainboard 2, which can respond quickly and dissipate heat efficiently at high temperatures, and reasonably control energy consumption at low temperatures to avoid energy waste. Compared with the traditional fixed speed heat dissipation method, it is more flexible, energy-saving and efficient. The air duct 300 connects the first ventilation channel 100 and the second ventilation channel 200, and cooperates with the fan 5 to drive to form a stable and efficient airflow circulation path. After the fan 5 is started, a negative pressure is generated in the housing 1, and the outside air continues to enter, and is discharged from the air outlet after two heat dissipation links to ensure the continuity of the heat dissipation airflow. This optimized airflow circulation mode ensures the stability of the heat dissipation process, allowing the inverter to be continuously in a good heat dissipation environment. Even under long-term, high-load operation, it can maintain a stable operating temperature, thereby improving the reliability and adaptability of the equipment.

[0066] In an exemplary embodiment, an air conditioning device and a frequency converter thereof are provided. Figures 1 to 7 As shown, in this embodiment, multiple layers of staggered partitions 31 are arranged in the heat dissipation box 3, and the multiple layers of the partitions 31 form the second ventilation channel 200. These partitions 31 are stacked in a staggered manner to form a tortuous second ventilation channel 200, which effectively extends the flow path of air in the heat dissipation box 3. Compared with the traditional straight-tube air duct 300, the contact time and contact area between the air and the heat dissipation component are greatly increased, thereby improving the heat dissipation effect.

[0067] Among them, a plurality of first heat sinks 32 are arranged on the side of the partition 31 facing the condensation water pipe 4. A plurality of first heat sinks 32 are fixedly installed on the side of the partition 31 facing the condensation water pipe 4. The first heat sink 32 adopts a fin structure, and a large number of fine heat sink fins are arranged on its surface to further expand the heat dissipation area.

[0068] Among them, a plurality of droppers 6 are further arranged in the heat dissipation box 3. The condensate water pipe 4 is communicated with the second ventilation channel 200 through the plurality of droppers 6, and the water dropping ports of the plurality of droppers 6 respectively correspond to the intervals between the plurality of first heat dissipation fins 32, so as to discharge the condensate water into the intervals between the plurality of first heat dissipation fins 32. In this embodiment, the heat dissipation effect can be further improved through the first heat dissipation fins 32.

[0069] Among them, the frequency converter may include a water collecting box 7. The upper end of the water collecting box 7 is communicated with the condensate water pipe 4, and the lower end of the water collecting box 7 is communicated with the plurality of droppers 6, so as to communicate the condensate water pipe 4 with the plurality of droppers 6. The condensate water generated by the air conditioning equipment flows into the water collecting box 7 through the condensate water pipe 4. The water collecting box 7 collects and distributes the condensate water into the plurality of droppers 6. The water dropping ports of the plurality of droppers 6 respectively correspond to the intervals between the plurality of first heat dissipation fins 32, so as to discharge the condensate water into the intervals between the plurality of first heat dissipation fins 32. The condensate water evaporates on the surface of the first heat dissipation fins 32, taking away a large amount of heat, and further improving the cooling and heat dissipation effect of the second ventilation channel 200 on the frequency conversion main board 2. The design of the water collecting box 7 enables the condensate water to be effectively collected and distributed. The condensate water is evenly dripped into the intervals between the first heat dissipation fins 32 through the droppers 6, and the heat is taken away by the evaporation of the condensate water, realizing the reasonable utilization of the condensate water, further improving the heat dissipation effect, and also saving resources.

[0070] Among them, the frequency converter includes a second heat dissipation fin 8. The second heat dissipation fin 8 is fixedly connected to the inner side wall of the housing 1 to form the first ventilation channel 100. The second heat dissipation fin 8 is provided with a first confluence groove 81, and the first confluence groove 81 is located at a position of the second heat dissipation fin 8 close to the air inlet of the air duct 300; and / or, the second heat dissipation fin 8 is provided with a second confluence groove 82, and the second confluence groove 82 is located at a position of the second heat dissipation fin 8 close to the air inlet of the housing 1.

[0071] Setting the second heat dissipation fin 8 in the first ventilation channel 100 increases the heat dissipation area, can more effectively cool the air entering the frequency converter initially, and improves the overall heat dissipation effect. The design of the first confluence groove 81 and the second confluence groove 82 optimizes the air flow path on the surface of the second heat dissipation fin 8, makes the air contact with the second heat dissipation fin 8 more fully, further enhances the heat exchange efficiency, helps to more quickly reduce the air temperature, and better improves the cooling and heat dissipation effect on the frequency conversion main board 2.

[0072] In an exemplary embodiment, an air conditioning equipment and its frequency converter are provided. In this embodiment, the first side of the heat dissipation box 3 is adhesively connected to the inner wall of the housing 1 through a first heat conducting sticker 9, so as to conduct the heat of the heat dissipation box 3 to the housing 1, and then the housing 1 dissipates the heat to the outside of the frequency converter, further improving the cooling and heat dissipation effect on the frequency conversion main board 2.

[0073] Among them, the first heat-conducting sticker 9 can be a first silicone grease sticker made of a silicone grease material to improve the heat-conducting effect. Of course, the first heat-conducting sticker 9 can also be a heat-conducting sticker made of other materials with good heat-conducting performance, and no limitation is imposed on this.

[0074] Among them, the second side of the heat dissipation box 3 is adhesively connected to the variable-frequency main board 2 through a second heat-conducting sticker 10 to conduct the heat of the variable-frequency main board 2 to the heat dissipation box 3, further improving the heat dissipation effect on the variable-frequency main board 2. The second heat-conducting sticker 10 can be a second silicone grease sticker made of a silicone grease material to improve the heat-conducting effect. Of course, the second heat-conducting sticker 10 can also be a heat-conducting sticker made of other materials with good heat-conducting performance, and no limitation is imposed on this.

[0075] Among them, the first side and the second side are two opposite sides of the heat dissipation box 3. Based on this, when the frequency converter is provided with both the first heat-conducting sticker 9 and the second heat-conducting sticker 10, the variable-frequency main board 2 can transmit heat to the heat dissipation box 3 through the second heat-conducting sticker 10, and the heat dissipation box 3 can conduct the heat to the housing 1 through the first heat-conducting sticker 9, and then the housing 1 dissipates the heat to the outside of the frequency converter, thereby improving the heat dissipation effect on the variable-frequency main board 2.

[0076] In an exemplary embodiment, an air conditioning device and its frequency converter are provided. Refer to Figures 1 to 14 As shown, in this embodiment, a filter box 11 is provided outside the air inlet of the housing 1. The size of the filter box 11 corresponds to the air inlet of the housing 1, which is convenient for installation and fixation. The filter box 11 is used to filter the gas passing through the air inlet, so as to avoid impurities from entering the housing 1 and better protect the frequency converter.

[0077] Among them, the filter box 11 includes a body 111, a filter screen 112, and a first cleaning part 113. The filter screen 112 is arranged at the middle position of the filter box 11 and is fixedly connected to the body 111. The first cleaning parts 113 are respectively arranged on both sides of the filter screen 112. Barbed villi are arranged on the side of the first cleaning part 113 facing the filter screen 112, and the first cleaning part 113 is movably connected to the body 111. When the first cleaning part 113 moves relative to the body 111, the barbed villi of the first cleaning part 113 clean the filter screen 112.

[0078] In some embodiments,

[0079] The filter screen 112 can be made of wire mesh or other materials, and there is no limitation in this regard. The filter screen 112 can be in the shape of a rectangular sheet and is fixed at the middle position of the main body 111 of the filter box 11 by welding, dividing the internal space of the filter box 11 into two front and rear areas, which are used to intercept dust and impurities in the outside air and prevent them from entering the internal part of the frequency converter. The two first cleaning parts 113 can be respectively arranged on the front and rear sides of the filter screen 112. Their main bodies are strip-shaped plate structures, and the material is lightweight and wear-resistant engineering plastic. On the side of the first cleaning part 113 facing the filter screen 112, barbed hairs are evenly planted. These barbed hairs are flexible in texture and have a certain hardness, and their inclined direction is towards the filter screen 112, which can effectively hook dust and impurities during the cleaning process. The first cleaning part 113 is connected to the main body 111 in a sliding connection manner to realize the movement of the first cleaning part 113 relative to the main body 111. In this embodiment, when the outside air enters from one end of the filter box 11 and passes through the filter screen 112, dust and impurities are intercepted on the filter screen 112. When the first cleaning part 113 slides relative to the main body 111, the barbed hairs on the first cleaning part 113 are in full contact with the surface of the filter screen 112, and the dust and impurities on the filter screen 112 are scraped off by using the unidirectional friction characteristic of the barbed hairs. The scraped dust and impurities will fall to the bottom of the filter box 11 during the cleaning process, and can be centrally cleaned through the detachable cover plate arranged at the bottom of the filter box 11.

[0080] In addition, the frequency converter may further include a stabilizing rod 12. The stabilizing rod 12 is fixedly connected to the first cleaning part 113, and a matching hole corresponding to the stabilizing rod 12 is provided on the main body 111. The stabilizing rod 12 is movably connected to the main body 111 through the matching hole.

[0081] For example, the stabilizing rod 12 is a cylindrical metal rod, and one end is fixedly connected to the first cleaning part 113, for example, by welding or bolt fastening to ensure a firm connection. A matching hole is provided at the position of the main body 111 corresponding to the first cleaning part 113. The diameter of the matching hole is slightly larger than the diameter of the stabilizing rod 12, so that the stabilizing rod 12 can smoothly pass through the matching hole and freely move in the hole. After the stabilizing rod 12 passes through the matching hole, the other end is not fixedly connected to other components and remains in a free state, only playing a guiding and stabilizing role. The cooperation between the stabilizing rod 12 and the matching hole limits the shaking and offset of the first cleaning part 113 in the direction perpendicular to the sliding direction, ensuring that the first cleaning part 113 always moves along the preset straight track.

[0082] Wherein, the first cleaning part 113 includes a fixed frame 1131 and a fluff net 1132. The fluff net 1132 is fixed to the fixed frame 1131, and barbed hairs are arranged on the side of the fluff net 1132 facing the filter screen.

[0083] For example, the fixed frame 1131 can be a rectangular frame structure, made of engineering plastic material with moderate hardness and wear resistance, and integrally formed by injection molding. The size of the fixed frame 1131 is adapted to the internal space of the filter box 11, and the inner sides of its four frames are provided with card slots. The fluff net 1132 is a flexible mesh structure, made of high-strength, corrosion-resistant fiber material, with barbed fluff evenly planted on the surface, the barbed fluff is inclined toward one side of the filter screen, and has good flexibility and wear resistance. The fluff net 1132 is fixed by embedding the card slot inside the fixed frame 1131. During installation, the edge of the fluff net 1132 is accurately embedded in the card slot, and the elastic clamping force of the card slot is used to make the fluff net 1132 flat and firmly fixed in the fixed frame 1131, ensuring that the fluff net 1132 will not shift or fall off during the cleaning process.

[0084] The side of the fluff net 1132 facing away from the filter net 112 is provided with a second cleaning portion 114, the side of the second cleaning portion 114 facing the fluff net 1132 is provided with barbed fluff, and the second cleaning portion 114 is fixedly connected to the body 111. When the first cleaning portion 113 moves relative to the body 111, the barbed fluff of the second cleaning portion 114 cleans the fluff net 1132.

[0085] For example, the second cleaning part 114 may include a scraper plate, which may be made of hard plastic and be in the shape of an elongated strip, the same width as the filter box 11. The scraper plate may be fixedly mounted inside the body 111, located on the side of the fluff net 1132 away from the filter net 112, and the side facing the fluff net 1132 is also planted with barbed hair. At least one fluff net 1132 may be equipped with the above-mentioned scraper plate. The scraper plate is fixed to a preset mounting hole on the side wall of the body 111 to ensure that the position remains fixed. When the fluff net 1132 moves relative to the body 111, the barbed hair on the fluff net 1132 cleans the dust and impurities on the filter net 112, and the barbed hair on the scraper plate cleans the dust and impurities attached to the surface of the fluff net 1132.

[0086] It should be noted that the scraper plate can be arranged on the side of the fluff net 1132 away from the filter net 112, or can be arranged between two fluff nets 1132. When the scraper plate is arranged between two fluff nets 1132, barbed fluff can be arranged on both sides of the scraper plate, so that the two fluff nets 1132 can be cleaned at the same time. In addition, when the scraper plate is arranged between two fluff nets 1132, the scraper plate can be located on one side of the filter box 11 to avoid blocking the filter net 112.

[0087] Among them, the frequency converter includes a driving mechanism 13, which is fixedly connected to the first cleaning part 113 and is used to drive the first cleaning part 113 to move relative to the body 111. It should be noted that the driving mechanism 13 may include a driving motor or other devices that can drive the first cleaning part 113 to move relative to the body 111, and this is not limited.

[0088] Among them, the driving mechanism 13 includes a connecting part 131, a transmission part 132 and a driving part 133. The connecting part 131 is fixedly connected to the first cleaning part 113, and the driving part 133 is connected to the connecting part 131 through the transmission part 132 and is used to drive the connecting part 131 to drive the first cleaning part 113 to move.

[0089] Among them, the form of the transmission part 132 can be various. For example, it can be chain drive, belt drive, gear drive, etc., and this is not limited. The driving part 133 can include a driving motor, for example. The connecting part 131 can be a connecting plate, a connecting rod or a connecting block, etc., and this is not limited.

[0090] For example, the connecting part 131 can be a connecting plate, and a sliding groove 1311 is provided on the connecting plate. The transmission part 132 can include a transmission wheel 1321, a transmission rod 1322, a transmission belt 1327, a turbine 1323, a worm 1324 and an eccentric shaft 1325, etc. The driving part 133 and the transmission rod 1322 can be connected through two transmission wheels 1321 and a transmission belt 1327, so that the driving part 133 drives the transmission rod 1322 to move. The transmission rod 1322 is connected to the worm 1324, the worm 1324 meshes with the turbine 1323, and the shaft rod of the turbine 1323 is fixedly connected to the eccentric shaft 1325. The shaft rod of the eccentric shaft 1325 is movably connected to the connecting plate through the sliding groove 1311. Among them, when cleaning the filter screen 112, the driving part 133 drives the connected transmission wheel 1321 to rotate, and this transmission wheel 1321 drives another transmission wheel 1321 to rotate through the transmission belt 1327, so that the transmission rod 1322 rotates accordingly. The rotation of the transmission rod 1322 drives the connected worm 1324 to rotate, and the worm 1324 drives the meshed turbine 1323 to rotate. When the turbine 1323 rotates, its shaft rod drives the eccentric shaft 1325 to rotate, and the shaft rod of the eccentric shaft 1325 makes a reciprocating motion in the sliding groove 1311 of the connecting plate, thereby driving the connecting plate and the first cleaning part 113 to make a reciprocating motion relative to the body 111. During the movement of the first cleaning part 113, the barbed hairs of its fluff net 1132 clean the filter screen 112, scraping off the dust and impurities on the filter screen 112. At the same time, the barbed hairs of the second cleaning part 114 clean the fluff net 1132 to prevent the fluff net 1132 from being blocked. The scraped-off dust and impurities will fall on the bottom of the filter box 11 body 111, and the filter box 11 body 111 can be opened regularly for cleaning.

[0091] Among them, the driving part 133 includes a pneumatic rotor, the pneumatic rotor is arranged at the air outlet of the housing 1, the gas discharged from the housing 1 drives the pneumatic rotor to rotate, and the rotation of the pneumatic rotor is transmitted to the connecting part 131 through the transmission part 132, so that the connecting part 131 drives the first cleaning part 113 to move. That is, in this embodiment, the airflow discharged from the air outlet of the housing 1 can drive the pneumatic rotor to rotate, and then drive the first cleaning part 113 to move relative to the main body 111 through the transmission part 132, so as to realize the cleaning of the filter net 112 and the fluff net 1132.

[0092] For example, when the frequency converter starts to run, the fan 5 operates to discharge the gas in the housing 1 from the air outlet. The discharged airflow impacts the pneumatic rotor and drives the pneumatic rotor to rotate. The shaft of the pneumatic rotor drives the transmission wheel 1321 connected thereto to rotate, and this transmission wheel 1321 drives another transmission wheel 1321 to rotate through the transmission belt 1327, so that the transmission rod 1322 rotates accordingly. The rotation of the transmission rod 1322 drives the worm 1324 connected thereto to rotate, and the worm 1324 drives the turbine 1323 meshed therewith to rotate. When the turbine 1323 rotates, its shaft drives the eccentric shaft 1325 to rotate, and the shaft of the eccentric shaft 1325 makes a reciprocating motion in the sliding groove 1311 of the connecting plate, thereby driving the connecting plate and the first cleaning part 113 to make a reciprocating motion relative to the main body 111. During the movement of the first cleaning part 113, the barbed fluff of its fluff net 1132 cleans the filter net 112, and scrapes off the dust and impurities on the filter net 112. At the same time, the barbed fluff of the second cleaning part 114 cleans the fluff net 1132 to prevent the fluff net 1132 from being blocked.

[0093] In this embodiment, a filter box 11 corresponding to the intake port position and size is provided at the intake port of the housing 1, which can accurately match the intake passage, comprehensively filter the gas entering the housing 1, effectively intercept dust and impurities, prevent them from entering the housing 1, provide reliable protection for the frequency converter, reduce problems such as electronic component failures and performance degradation caused by impurity intrusion, and extend the service life of the frequency converter. Moreover, the barbed fluff of the first cleaning part 113 can automatically clean the filter net 112 when moving relative to the main body 111, and efficiently scrape off dust and impurities by utilizing the unidirectional friction force characteristic, without manual disassembly and cleaning, greatly reducing the maintenance workload and frequency. At the same time, the second cleaning part 114 performs reverse cleaning on the fluff net 1132 to prevent the fluff net 1132 from being blocked, ensure that the first cleaning part 113 continuously maintains a good cleaning effect, maintain the long-term efficient operation of the filter box 11, and ensure the smoothness and cleanliness of the air intake of the frequency converter. In addition, the stabilizing rod 12 is fixedly connected to the first cleaning part 113, and through the movable connection with the mating hole on the main body 111, the shaking and deviation of the first cleaning part 113 perpendicular to the sliding direction are restricted, so that it moves strictly along the preset straight line trajectory. This design enhances the stability and accuracy of the movement of the first cleaning part 113, avoids incomplete cleaning or component wear caused by shaking, and improves the reliability and durability of the entire cleaning system. In addition, in this embodiment, when the driving part 133 adopts a pneumatic rotor, the airflow discharged from the air outlet of the housing 1 is used as the power source, and there is no need for additional electric energy to drive the first cleaning part 113, realizing the recycling of energy, reducing the operating energy consumption of the equipment and improving the energy utilization efficiency of the air conditioning equipment.

[0094] In an exemplary embodiment, an air conditioning device and its frequency converter are provided. Refer to Figures 1 to 14 As shown, in this embodiment, the frequency converter may include a housing 1 and a variable frequency main board 2. A main heat dissipation mechanism is arranged inside the housing 1. The main heat dissipation mechanism includes a heat dissipation box 3. A plurality of partition plates 31 are horizontally and fixedly connected inside the heat dissipation box 3. The partition plates 31 intersect with each other and leave intervals to form a second ventilation channel 200. And a plurality of first heat dissipation fins 32 are fixedly connected to the upper surface of the partition plate 31 (refer to the upper surface shown in Figure 1 ), and a collection box is fixedly connected to the upper end of the heat dissipation box 3. The collection box penetrates through the top of the heat dissipation box 3, and a dropper 6 is fixedly connected to its lower end. The dropper 6 corresponds to the first heat dissipation fins 32, and a condensation water pipe 4 is fixedly connected to the upper end of the collection box.

[0095] Among them, an air duct 300 is fixedly connected to the upper side of the heat dissipation box 3. The air duct 300 penetrates through the box body of the heat dissipation box 3 and is communicated with the second ventilation channel 200 inside it. And an air outlet is arranged at a lower corner of the heat dissipation box 3. An air outlet channel 400 is fixedly connected to the position of the air outlet. The air outlet channel 400 penetrates through the heat dissipation box 3 and is communicated with the second ventilation channel 200 inside it.

[0096] Among them, the upper end of the condensate water pipe 4 penetrates through the housing 1 and is sealed and sleeved with it. One side of the housing 1 is fixedly installed with the main board interface 17 of the frequency converter, and the main board interface 17 is electrically connected to the frequency conversion main board 2. And the lower end of the other side of the housing 1 is provided with an air inlet, and the outside of the air inlet is fixedly connected with a filter box 11. The size and shape of the filter box 11 correspond to the air inlet, and a fixed frame 1131 is movably installed inside the filter box 11, and a fluff net 1132 is fixedly connected inside the fixed frame 1131.

[0097] Among them, one side of the fixed frame 1131 is fixedly connected with a stabilizing rod 12. The stabilizing rod 12 penetrates through the side of the filter box 11 and is movably sleeved with it. And the other side of the fixed frame 1131 is fixedly connected with a connecting plate, and a sliding groove 1311 is opened on the plate body of the connecting plate. In addition, a filter net 112 is fixedly installed inside the filter box 11. The filter net 112 is installed between two fluff nets 1132. And one side of the filter box 11 is fixedly connected with a scraping plate. The side of the scraping plate facing the fluff net 1132 and the side of the fluff net 1132 facing the filter net 112 are both planted with barbed fluff.

[0098] In this embodiment, the worm gear drives the eccentric shaft 1325 to rotate, causing the barbed fluff inside the fluff net 1132 to rub back and forth on the surface of the filter net 112, and using the unidirectional friction characteristic of the barbed fluff to scrape off the dust and impurities on the surface of the filter net 112. At the same time, the dust on the surface of the fluff net 1132 is scraped off by the barbed fluff in the reverse direction on the scraping plate.

[0099] Among them, the lower end of the air outlet channel 400 penetrates through the bottom of the housing 1 and is sealed and sleeved with it. That is, the air outlet channel 400 connects the air outlet of the heat dissipation box 3 with the air outlet of the housing 1. The outside of the bottom of the housing 1 is fixedly connected with a pneumatic rotor, and the pneumatic rotor corresponds to the air outlet of the air outlet channel 400. The air duct 300 penetrates through the frequency converter housing 1 and is fixedly sleeved with it. And a fan 5 is fixedly installed in the middle of the air duct 300, and the other end of the air duct 300 corresponds to the opening opened on the housing 1 and is sealed and sleeved with it.

[0100] Among them, the lower end of the worm 1324 is fixedly connected with a transmission rod 1322, and transmission wheels 1321 are installed at the lower ends of the transmission rod 1322 and the pneumatic rotor at the lower end of the housing 1. A transmission belt is sleeved between the transmission wheels 1321. A transmission mechanism is fixedly connected to the surface of the housing 1. The transmission mechanism includes a worm gear box and a worm gear. The worm gear is installed inside the worm gear box, and the worm 1324 is meshed with the inner side of the worm gear. The worm 1324 and the worm gear are both fixedly installed on the surface of the frequency converter housing 1 through fixing parts. And an eccentric shaft 1325 is fixedly connected to the shaft rod of the worm gear. The shaft rod of the eccentric shaft 1325 corresponds to the sliding groove 1311 and is movably sleeved with it.

[0101] In this embodiment, the air containing a large amount of heat is discharged through the air outlet channel 400, while driving the pneumatic rotor to rotate, driving the transmission rod 1322 to rotate through the transmission wheel 1321 and the transmission belt, and driving the worm wheel to rotate through the worm 1324.

[0102] Wherein, one side of the inner wall of the housing 1 is fixedly connected with a second heat sink 8 to form a first ventilation channel 100. The ends of the second heat sink 8 close to the air duct 300 and the air inlet of the housing 1 are provided with confluence grooves, which are respectively denoted as a first confluence groove 81 and a second confluence groove 82. The other side of the inner wall of the housing 1 is fixedly connected with a fixed column 14. A first silicone grease sticker is fixedly pasted on one side of the heat dissipation box 3 close to the housing 1, the other side of the first silicone grease sticker is fixedly pasted on the inner wall of the housing 1, and a second silicone grease sticker is fixedly pasted on the other side of the heat dissipation box 3, and the other side of the second silicone grease sticker is fixedly pasted on the back of the variable frequency main board 2.

[0103] Bolt holes are provided at the four corners of the variable frequency main board 2. A fixing bolt 18 is movably sleeved inside the bolt holes. A support column 15 and a gasket 16 are movably sleeved on the rod body of the fixing bolt 18. The support column 15 and the gasket 16 are respectively installed on the front and back sides of the variable frequency main board 2, and the threaded rod of the fixing bolt 18 corresponds to the threaded hole provided on the fixed column 14 and is threadedly sleeved with it.

[0104] In this embodiment, a temperature sensor is installed inside the frequency converter to monitor the temperature of key parts of the frequency converter such as the power module and the reactor in real time. When the temperature sensor detects that the temperature rises to the set threshold, it will send a signal to the controller. The controller can adjust the rotation speed of the fan 5 according to the received signal. Among them, when the temperature rises, the controller can increase the rotation speed of the fan 5 to increase the air flow to take away more heat. When the fan 5 starts, it will create a negative pressure inside the housing 1 and inhale the outside air through the air inlet of the housing 1 for ventilation, and initially absorb and extract the heat of the air inside the frequency converter through the second heat sink 8. During this process, the dust and impurities in the outside air are filtered through the filter net 112, and the air enters the heat dissipation box 3 through the air duct 300. At the same time, the condensate pipe 4 of the air conditioner discharges the condensate water into the collection box, and then drips into the first heat sink 32 through the dropper 6, and the heat on its surface is taken away by evaporation to increase the heat dissipation effect. And the air containing a large amount of heat is discharged through the air outlet channel 400, while driving the pneumatic rotor to rotate, driving the transmission rod 1322 to rotate through the transmission wheel 1321 and the transmission belt, driving the worm wheel to rotate through the worm 1324, driving the eccentric shaft 1325 to operate through the worm wheel, causing the barbed hairs inside the fluff net 1132 to rub back and forth with the surface of the filter net 112, and scraping off the dust and impurities on the surface of the filter net 112 by using the unidirectional friction characteristic of the barbed hairs, and at the same time scraping off the dust on the surface of the fluff net 1132 by the barbed hairs in the reverse direction on the scraping plate.

[0105] In this embodiment, the staggered partition 31 cooperates with the first heat sink 32 to greatly extend the air flow path and increase the heat dissipation area. Then, the condensate water pipe 4 is introduced to introduce condensate water, and the evaporation heat absorption principle is used to enhance heat dissipation. At the same time, the second heat sink 8 on the inner wall of the housing 1 forms the first ventilation channel 100 to preliminarily dissipate heat from the air. This layered and multi-channel heat dissipation design efficiently cools the variable frequency main board 2 at different stages, avoids performance degradation or component damage caused by overheating, ensures the stable operation of the frequency converter under complex working conditions, and extends the service life of the equipment.

[0106] In addition, the built-in temperature sensor and controller continuously monitor the temperature of key parts and intelligently adjust the rotation speed of the fan 5 according to the temperature change. When the temperature rises, the rotation speed is increased to enhance heat dissipation; when the temperature drops, the rotation speed is decreased to reduce energy consumption, changing the high-energy consumption mode of traditional fixed-speed heat dissipation and realizing on-demand heat dissipation. This precise temperature control strategy significantly reduces the operating energy consumption of the fan 5 while ensuring the heat dissipation effect, saves energy resources, and reduces the equipment operating cost.

[0107] Among them, the fluff net 1132 in the filter box 11 cooperates with the filter net 112 to filter the air. At the same time, the fluff net 1132 and the barbed fluff of the scraping plate form a double self-cleaning mechanism. The pneumatic rotor is used to drive the transmission mechanism to drive the fluff net 1132 to reciprocate, cleaning the dust and impurities on the filter net 112; the scraping plate synchronously cleans the dust on the surface of the fluff net 1132 to prevent blockage. The self-cleaning design avoids frequent manual maintenance, ensures the smoothness of the air inlet channel, reduces the damage of dust to the internal components of the frequency converter, and improves the reliability and stability of the entire system. Moreover, this embodiment cleverly uses the hot air discharged from the air outlet channel 400 to drive the pneumatic rotor, converting the heat energy originally wasted during the heat dissipation process into the power for the self-cleaning of the filter box 11. Through transmission components such as the transmission wheel 1321, belt, worm 1324 and worm gear 132, the rotational motion of the pneumatic rotor is converted into the reciprocating motion of the fluff net 1132, and the automatic cleaning of the filter system can be completed without additional energy input, realizing the recycling of energy and improving the energy utilization efficiency.

[0108] In addition, in this embodiment, the heat dissipation box 3 is tightly connected to the housing 1 and the variable frequency main board 2 through a first thermal grease sticker and a second thermal grease sticker respectively. The good thermal conductivity of the thermal grease sticker effectively fills the tiny gaps between components, reduces the thermal resistance, enables heat to be quickly and efficiently transferred from the variable frequency main board 2 to the heat dissipation box 3 and the housing 1, and enhances the overall heat dissipation effect. Combined with the air flow in the ventilation channel, a "conduction + convection" composite heat dissipation mode is formed, further improving the heat dissipation efficiency. In addition, the layout of the components in this embodiment is compact and reasonable. The filter box 11, the heat dissipation mechanism, the transmission mechanism, etc. are integrated inside the housing 1, with high space utilization rate. The modular design makes the components relatively independent and cooperate with each other, facilitating installation and disassembly. For example, the detachable cover plate at the bottom of the filter box 11 is convenient for cleaning dust, and the variable frequency main board 2 connected by the fixing bolts 18 is convenient for maintenance and replacement. This design reduces the installation difficulty of the equipment, shortens the maintenance time, and improves the production and maintenance efficiency.

[0109] Those skilled in the art should also be able to further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Skilled professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0110] It should be noted that phrases such as "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining specific features, structures, or characteristics with an embodiment, it is within the knowledge scope of those skilled in the art to implement such features, structures, or characteristics in combination with other embodiments, whether explicitly or implicitly described.

[0111] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or air conditioning device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or air conditioning device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or air conditioning device comprising the said element.

[0112] The above embodiments are only preferred embodiments given to fully illustrate the present application, and the protection scope of the present application is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present application are within the protection scope of the present application.

Claims

1. A frequency converter, characterized in that, The frequency converter includes a housing, a frequency conversion main board, and a heat dissipation box. The frequency conversion main board and the heat dissipation box are located inside the housing. A first ventilation channel is provided on a side of the frequency conversion main board facing away from the heat dissipation box, and an air inlet of the first ventilation channel is communicated with an air inlet on the housing; A second ventilation channel is provided inside the heat dissipation box. The frequency converter further includes a condensate water pipe, an air duct, a fan, and a controller. An air outlet of the air duct is communicated with the second ventilation channel, an air inlet of the air duct is communicated with the first ventilation channel, an air outlet of the second ventilation channel is communicated with an air outlet on the housing, the condensate water pipe is communicated with the second ventilation channel, and the condensate water pipe is used to supply condensate water to the second ventilation channel; The fan is arranged inside the air duct and is used to drive the gas inside the air duct to flow from its air inlet to the air outlet after starting; The controller is electrically connected to the fan and is used to control the rotation speed of the fan.

2. The frequency converter according to claim 1, wherein Multiple layers of staggered partitions are provided inside the heat dissipation box, and the multiple layers of partitions form the second ventilation channel. A plurality of first heat dissipation fins are provided on a side of the partition facing the condensate water pipe; A plurality of droppers are further provided inside the heat dissipation box. The condensate water pipe is communicated with the second ventilation channel through the plurality of droppers, and the dripping ports of the plurality of droppers respectively correspond to the intervals between the plurality of first heat dissipation fins, and are used to drain the condensate water into the intervals between the plurality of first heat dissipation fins.

3. The frequency converter according to claim 2, wherein The frequency converter includes a water collection box. The upper end of the water collection box is communicated with the condensate water pipe, and the lower end of the water collection box is communicated with the plurality of droppers to communicate the condensate water pipe with the plurality of droppers.

4. The frequency converter according to claim 1, wherein The frequency converter further includes a second heat dissipation fin, and the second heat dissipation fin is fixedly connected to the inner side wall of the housing to form the first ventilation channel; Wherein, the second heat dissipation fin is provided with a first confluence groove, and the first confluence groove is located at a position of the second heat dissipation fin close to the air inlet of the air duct; and / or, the second heat dissipation fin is provided with a second confluence groove, and the second confluence groove is located at a position of the second heat dissipation fin close to the air inlet of the housing.

5. The frequency converter according to claim 1, wherein The first side of the heat dissipation box is adhesively connected to the inner wall of the housing through a first heat conductive sticker, and / or, the second side of the heat dissipation box is adhesively connected to the frequency conversion main board through a second heat conductive sticker; Wherein, the first side and the second side are two opposite sides of the heat dissipation box.

6. The frequency converter according to claim 5, wherein The first heat conductive sticker includes a first silicone grease sticker, and / or, the second heat conductive sticker includes a second silicone grease sticker.

7. The frequency converter according to any one of claims 1-6, characterized in that, A filter box is provided outside the air inlet of the housing. The size of the filter box corresponds to the air inlet of the housing and is used to filter the gas passing through the air inlet.

8. The frequency converter according to claim 7, wherein The filter box includes a body, a filter net, and a first cleaning part. The filter net is arranged at the middle position of the filter box and is fixedly connected to the body. The first cleaning parts are respectively arranged on both sides of the filter net. Barbed fluff is arranged on a side of the first cleaning part facing the filter net, and the first cleaning part is movably connected to the body; Wherein, when the first cleaning part moves relative to the main body, the barbed fluff of the first cleaning part cleans the filter screen.

9. The frequency converter according to claim 8, characterized in that The frequency converter includes a stabilizing rod, which is fixedly connected to the first cleaning part, and a matching hole corresponding to the stabilizing rod is provided on the main body, and the stabilizing rod is movably connected to the main body through the matching hole.

10. The frequency converter according to claim 8, characterized in that, The first cleaning part comprises a fixing frame and a fluff net, wherein the fluff net is fixed to the fixing frame, and barbed fluff is arranged on a side of the fluff net facing the filter net.

11. The frequency converter according to claim 10, characterized in that, A second cleaning portion is provided on a side of the fluff net facing away from the filter net, and barbed fluff is provided on a side of the second cleaning portion facing the fluff net, and the second cleaning portion is fixedly connected to the body; Wherein, when the first cleaning part moves relative to the main body, the barbed fluff of the second cleaning part cleans the fluff net.

12. The frequency converter according to claim 8, characterized in that, The frequency converter includes a driving mechanism, and the driving structure is fixedly connected to the first cleaning part and is used to drive the first cleaning part to move relative to the body.

13. The frequency converter according to claim 12, characterized in that, The driving mechanism includes a connecting part, a transmission part and a driving part. The connecting part is fixedly connected to the first cleaning part. The driving part is connected to the connecting part through the transmission part, and is used to drive the connecting part to drive the first cleaning part to move.

14. The frequency converter according to claim 13, wherein The driving part includes a pneumatic rotor, which is arranged at the position of the air outlet of the shell. The gas discharged from the shell drives the pneumatic rotor to rotate. The rotation of the pneumatic rotor is transmitted to the connecting part through the transmission part, so that the connecting part drives the first cleaning part to move.

15. An air conditioning device, characterized in that, The air conditioning device comprises the inverter as claimed in any one of claims 1-14.

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