A frequency converter, air conditioner

Abstract

The utility model provides a kind of frequency converter, air conditioner, frequency converter includes: box, cooling system, dehumidification system and dust removal system are arranged in the box, the cooling system can cool the interior space of the box, the dehumidification system can heat the interior space of the box, the dust removal system can be blown to the interior space of the box to blow dust, component is arranged in the interior space.According to the utility model, dust cleaning, drying dehumidification and auxiliary heat dissipation can be carried out on the inside of frequency converter respectively, so as to improve the environmental adaptability of frequency converter, enhance the internal protection of frequency converter, ensure normal operation of internal system, can solve the problems of moisture, dust and high temperature in the inside of frequency converter together;The utility model can effectively solve the problems of moisture, dust and high temperature in the inside of frequency converter in prior art.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a frequency converter and an air conditioner. Background Technology

[0002] A frequency converter is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing its operating frequency. A frequency converter mainly consists of a rectification, filtering, inversion, braking unit, drive unit, detection unit, and microprocessor unit. Due to the limitations of the operating environment, when a frequency converter has a low protection level but is used in an environment with a lot of dust and debris, the internal cleanliness and drying issues can become a major problem affecting its normal operation.

[0003] Existing technologies cannot simultaneously meet the requirements of internal drying, cleaning, and heat dissipation of frequency converters, resulting in poor operating performance or reliability of frequency converters.

[0004] Because existing frequency converters suffer from internal moisture, dust, and high temperatures, which cannot be solved by the frequency converter itself, this utility model researches and designs a frequency converter and an air conditioner. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the existing technology where the inverter has internal moisture, dust and high temperature, which cannot be solved by the inverter itself, thereby providing an inverter and an air conditioner.

[0006] To solve the above problems, this utility model provides a frequency converter, which includes: The enclosure contains a cooling system, a dehumidification system, and a dust removal system. The cooling system cools and dissipates heat from the interior space of the enclosure, the dehumidification system heats and dehumidifies the interior space of the enclosure, and the dust removal system blows air into the interior space of the enclosure to remove dust. Components are housed within the interior space.

[0007] In some implementations... The housing includes a first side panel assembly located on one side in the horizontal direction. The first side panel assembly has an evaporator, a first air inlet, and a first air outlet inside. Refrigerant flows inside the evaporator. One end of the first air inlet is connected to the outside of the inverter, and the other end is connected to the evaporator, so as to introduce gas from outside the inverter to exchange heat with the evaporator. One end of the first air outlet is connected to the internal space of the housing, and the other end is connected to the evaporator, so as to guide the gas after heat exchange with the evaporator into the internal space for cooling.

[0008] In some implementations... The first side panel assembly includes a first mounting plate that forms a first accommodating space. The evaporator is disposed in the first accommodating space. The other end of the first air inlet is connected to the first accommodating space, and the other end of the first air outlet is connected to the first accommodating space.

[0009] In some implementations... A cooling fan is provided at the first air outlet, which can blow the airflow in the first accommodating space to the internal space of the housing through the first air outlet; there are at least two first air outlets and at least two cooling fans, which are arranged one-to-one with the first air outlets; there are also at least two first air inlets.

[0010] In some implementations... The enclosure also includes a second side panel assembly located on the other side in the horizontal direction. The interior of the second side panel assembly is provided with a heat exchanger, a second air inlet, and a second air outlet. The heat exchanger can release heat. One end of the second air inlet is connected to the outside of the inverter, and the other end is connected to the heat exchanger, so as to introduce gas from outside the inverter to be heated by the heat exchanger. One end of the second air outlet is connected to the internal space of the enclosure, and the other end is connected to the heat exchanger, so as to introduce the gas heated by the heat exchanger into the internal space for heating and dehumidification.

[0011] In some implementations... The second side panel assembly includes a second mounting plate that forms a second accommodating space. The heat exotherm is disposed in the second accommodating space. The other end of the second air inlet is connected to the second accommodating space, and the other end of the second air outlet is connected to the second accommodating space.

[0012] In some implementations... A dehumidifying fan is provided at the second air outlet, which can blow the airflow in the second accommodating space to the internal space of the box through the second air outlet; there are at least two second air outlets and at least two dehumidifying fans, and the dehumidifying fans are arranged one-to-one with the second air outlets; there are also at least two second air inlets.

[0013] In some implementations... The enclosure also includes a top plate at the top and a bottom plate at the bottom. A dust removal fan is provided on the top plate, and a first air inlet and a second air inlet are provided on the bottom plate. The dust removal fan can drive the airflow outside the enclosure to enter the internal space of the enclosure through the first air inlet and the second air inlet.

[0014] In some implementations... It also includes a door connected to the housing to open or close the internal space of the housing. When dust removal is required, the door is opened, and the dust removal fan drives the airflow in the internal space of the housing to be blown out of the housing through the open door. When an evaporator and a heat exchanger are included, the first air inlet is an air inlet opposite to and connected to the evaporator, and the second air inlet is an air inlet opposite to and connected to the heat exchanger.

[0015] This utility model also provides an air conditioner that includes the aforementioned frequency converter.

[0016] The frequency converter and air conditioner provided by this utility model have the following beneficial effects: 1. This utility model simultaneously incorporates a cooling system, a dehumidification system, and a dust removal system within the inverter enclosure, forming an internal protection system for the inverter enclosure. This creates three independent, specially designed air duct systems that can respectively clean dust, dry and dehumidify the inverter's interior, and provide auxiliary heat dissipation. This improves the inverter's environmental adaptability, enhances internal protection, ensures the normal operation of the internal system, and simultaneously solves the problems of moisture, dust, and high temperatures inside the inverter. This utility model effectively addresses the issues of moisture, dust, and high temperatures inside inverters in existing technologies.

[0017] 2. This utility model adopts three independent specially designed air duct systems, which achieve internal protection of the inverter enclosure through different functional combinations; the left side dry hot air duct design uses a heater to make the air entering from the left side hot air, realizing the internal moisture protection function of the inverter; the right side cooling air duct design uses an evaporator to make the air entering from the right side cold air, assisting in the heat dissipation of the internal components of the inverter and ensuring the stability of system operation; the top dust removal air duct design uses multiple fans to blow air from top to bottom to remove internal dust and other debris.

[0018] 3. This utility model effectively integrates dehumidification, cooling, and dust removal into a single structure within the frequency converter, with interconnected air ducts for all three functions. Especially in dust removal mode, the simultaneous operation of the dehumidification fan, cooling fan, and dust removal fan increases airflow and improves dust removal efficiency in the internal space and the first and second accommodating spaces, forming an interconnected structure. This allows the three spaces (air ducts) to be interconnected and the fans to share resources. While ensuring dehumidification and cooling respectively, the airflow in dust removal mode is increased, improving the dust removal effect. Furthermore, the shared air ducts, inlet and outlet ports, and fans result in a more compact structure, reduced size, and cost savings. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the frequency converter of this utility model in the first direction when the cabinet door is opened; Figure 2 This is a three-dimensional structural diagram of the frequency converter of this utility model in the second direction when the cabinet door is open; Figure 3 This is a three-dimensional structural diagram of the frequency converter of this utility model when the cabinet door is open; Figure 4 This is an enlarged structural view of the cooling system portion of the frequency converter of this utility model; Figure 5 This is an enlarged structural view of the dehumidification system of the frequency converter of this utility model; Figure 6 This is an enlarged structural view of the dust removal system part of the frequency converter of this utility model; Figure 7 This is an enlarged view of the base plate of the frequency converter of this utility model.

[0020] The reference numerals in the attached figures are as follows: 1. Cooling system; 2. Dehumidification system; 3. Dust removal system; 4. Cabinet; 11. Second mounting plate; 12. Dehumidifying fan; 13. Fan mounting plate; 14. Heat exchanger; 21. First mounting plate; 22. Cooling fan; 23. Evaporator; 24. Refrigerant inlet / outlet; 31. Top plate; 32. Fan mounting component; 33. Top reinforcing rib; 34. Dust removal fan; 35. Fan cover; 41. Second air inlet; 42. First air inlet; 43. First air outlet; 44. Second air outlet; 5. Internal space; 6. First side panel assembly; 7. First accommodating space; 8. Second side panel assembly; 9. Second accommodating space; 10. Bottom plate; 15. Cabinet door. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0027] like Figure 1-7 As shown, this utility model provides a frequency converter, which includes: The enclosure 4 contains a cooling system 1, a dehumidification system 2, and a dust removal system 3. The cooling system 1 cools and dissipates heat from the internal space 5 of the enclosure 4. The dehumidification system 2 heats and dehumidifies the internal space 5 of the enclosure 4. The dust removal system 3 blows air into the internal space 5 of the enclosure 4 to remove dust. Components are installed in the internal space 5 (these components may include functional components that generate heat during operation, as well as control components, power supply components, etc.).

[0028] This invention establishes an internal protection system for the frequency converter by simultaneously incorporating a cooling system, a dehumidification system, and a dust removal system within the converter's enclosure. This system comprises three independent, specially designed air duct systems that can respectively clean dust, dry and dehumidify the inside of the frequency converter, and provide auxiliary heat dissipation. This improves the frequency converter's environmental adaptability, enhances its internal protection, ensures the normal operation of the internal system, and simultaneously solves the problems of moisture, dust, and high temperatures inside the frequency converter. This invention effectively addresses the issues of moisture, dust, and high temperatures inside frequency converters in existing technologies.

[0029] This utility model provides an internal protection system for a frequency converter enclosure, including a cooling system 1, a dehumidification system 2, and a dust removal system 3, all located inside the enclosure 4 (sheet metal structure), achieving complete internal protection. Figure 1-3As shown: Cooling system 1 is located inside the right cavity of the inverter housing, dehumidification system 2 is located inside the left cavity of the inverter housing, and dust removal system 3 is located on the top inside the inverter.

[0030] In some implementations... The housing 4 includes a first side panel assembly 6 located on one side in the horizontal direction. The first side panel assembly 6 is provided with an evaporator 23, a first air inlet 42 and a first air outlet 43. Refrigerant flows inside the evaporator 23. One end of the first air inlet 42 is connected to the outside of the frequency converter and the other end is connected to the evaporator 23 so as to introduce gas from outside the frequency converter to exchange heat with the evaporator 23. One end of the first air outlet 43 is connected to the internal space 5 of the housing 4 and the other end is connected to the evaporator 23 so as to introduce the gas after heat exchange with the evaporator 23 into the internal space 5 for cooling.

[0031] This is a preferred structural form of the cooling system of this utility model. By setting an evaporator inside the first side plate assembly, the air entering through the first air inlet can be cooled down and delivered to the internal space through the first air outlet, thereby cooling down the functional components inside the frequency converter, assisting the internal components in heat dissipation, and improving the heat dissipation effect.

[0032] In some implementations... The first side panel assembly 6 includes a first mounting plate 21, which forms a first accommodating space 7. The evaporator 23 is disposed in the first accommodating space 7. The other end of the first air inlet 42 is connected to the first accommodating space 7 and is opposite to the evaporator 23. The other end of the first air outlet 43 is connected to the first accommodating space 7.

[0033] This is a further preferred structural form of the first side plate assembly of this utility model. The structure of the first mounting plate forms a first accommodating space for setting up structures such as evaporators. A cooling effect on the gas is formed in the accommodating space, which can improve the cooling effect on the gas and transport the cooled gas to the internal space, thereby improving the cooling performance of functional components.

[0034] In some implementations... A cooling fan 22 is provided at the first air outlet 43. The cooling fan 22 can blow the airflow in the first accommodating space 7 to the internal space 5 of the box 4 through the first air outlet 43. There are at least two first air outlets 43 and at least two cooling fans 22. The cooling fans 22 are arranged one-to-one with the first air outlets 43. There are also at least two first air inlets 42.

[0035] This invention further utilizes a cooling fan located at the first air outlet in the cooling system. The cooling fan is positioned within the first accommodating space and can drive airflow, allowing gas to enter the first accommodating space from the first air inlet. After being cooled by the evaporator, the gas is blown out by the cooling fan into the internal space. Multiple cooling fans, multiple first air outlets, and multiple air inlets can increase the gas flow rate and further improve the cooling and heat dissipation effect on the internal components of the frequency converter.

[0036] See Figure 4 The cooling system is shown in the figure. The first mounting plate 21 (right) is fixed to the main sheet metal of the housing 4 by bolt assemblies, forming a closed cavity in the middle. This cavity is used for the installation of cooling system components. The first mounting plate 21 has an opening (first air outlet) for installing a cooling fan. An evaporator 23 is installed below the fan. The evaporator is used to cool the incoming air. The refrigerant for the evaporator is input from the refrigerant inlet and outlet 24 and circulates to dissipate heat. The refrigerant inlet and outlet 24 is preferably installed behind the main sheet metal of the housing 4.

[0037] In some implementations... The housing 4 also includes a second side panel assembly 8 located on the other side in the horizontal direction. The second side panel assembly 8 is provided with a heat exchanger 14 (preferably an electric heater), a second air inlet 41 and a second air outlet 44. The heat exchanger 14 can release heat. One end of the second air inlet 41 is connected to the outside of the inverter and the other end is connected to the heat exchanger 14 so as to introduce the gas outside the inverter to be heated by the heat exchanger 14. One end of the second air outlet 44 is connected to the internal space 5 of the housing 4 and the other end is connected to the heat exchanger 14 so as to introduce the gas heated by the heat exchanger 14 into the internal space 5 for heating and dehumidification.

[0038] This is a preferred structural form of the dehumidification system of this utility model. By setting a heat exchanger inside the second side plate assembly, the air entering through the second air inlet can be heated and heated, and then transported to the internal space through the second air outlet, thereby heating and dehumidifying the internal space of the inverter and realizing the internal moisture-proof function of the inverter.

[0039] In some implementations... The second side panel assembly 8 includes a second mounting plate 11, which forms a second accommodating space 9. The heat exotherm 14 is disposed in the second accommodating space 9. The other end of the second air inlet 41 is connected to the second accommodating space 9 and is opposite to the heat exotherm 14. The other end of the second air outlet 44 is connected to the second accommodating space 9.

[0040] This is a further preferred structural form of the second side plate assembly of this utility model. The structure of the second mounting plate forms a second accommodating space for setting up structures such as heat exchangers. In this accommodating space, a heating effect is formed on the gas, which can improve the heating effect on the gas. Furthermore, the heated gas is transported to the internal space, which improves the dehumidification effect inside the frequency converter and enhances the moisture-proof effect.

[0041] In some implementations... A dehumidifying fan 12 is provided at the second air outlet 44. The dehumidifying fan 12 can blow the airflow in the second accommodating space 9 to the internal space 5 of the box 4 through the second air outlet 44. There are at least two second air outlets 44 and at least two dehumidifying fans 12. The dehumidifying fans 12 are arranged in a one-to-one correspondence with the second air outlets 44. There are also at least two second air inlets 41.

[0042] This invention further utilizes a dehumidifying fan located at the second air outlet in the dehumidification system. The dehumidifying fan is positioned within the second accommodating space and can drive airflow, allowing gas to enter the first accommodating space from the second air inlet. After being heated by the heat exchanger, the gas is blown out of the dehumidifying fan into the internal space. Multiple dehumidifying fans, multiple second air outlets, and multiple air inlets can increase the gas flow rate, further improving the dehumidification and moisture-proof performance of the inverter's interior.

[0043] See Figure 5 The dehumidification system is shown in the figure. The second mounting plate 11 (left) is an insulating sheet metal piece, which is fixedly connected to the main structure of the housing 4 by bolt assemblies, forming a closed cavity (second receiving space) in the middle. This cavity is the installation location of the dehumidification system's related components. The second mounting plate 11 has an opening (second air outlet), through which the dehumidification fan 12 is installed on the fan mounting plate 13. The fan mounting plate is connected to the second mounting plate 11 by bolts, ensuring the airtightness of all areas except the fan duct. Heat exchangers 14 are installed below the two dehumidification fans, ensuring that the air blown into the inverter is hot air.

[0044] In some implementations... The housing 4 also includes a top plate 31 at its top and a bottom plate 10 at its bottom. A dust removal fan 34 is provided on the top plate 31, and a first air inlet 42 and a second air inlet 41 are provided on the bottom plate 10. The dust removal fan 34 can drive the airflow outside the housing 4 to enter the internal space 5 of the housing 4 through the first air inlet 42 and the second air inlet 41.

[0045] This is a preferred structural form of the dust removal system of this utility model. By installing a dust removal fan on the top plate, airflow can be driven into the internal space of the housing, thereby removing dust from the internal space of the frequency converter. Multiple fans blow air from top to bottom to remove internal dust and other debris, preventing the accumulation of internal debris.

[0046] See Figure 6 The dust removal system is shown in the figure. The system is installed on the top inside the inverter box. The fan mounting part 32 and the top reinforcing rib 33 are preferably fixed to the top sheet metal (top plate 31) by welding. The dust removal fan 34 is fixed to the fan mounting part 32 by bolts, and the fan cover 35 is fixed to the top reinforcing rib 33 by bolts. The dust removal fan 34 runs inside the box and blows air through the fan cover 35 for dust removal inside the box.

[0047] In some implementations... It also includes a door 15, which is connected to the housing 4 to open or close the internal space 5 of the housing 4. When dust removal is required, the door 15 is opened, and the dust removal fan 34 can drive the airflow of the internal space 5 of the housing 4 to be blown out of the housing 4 through the opened door 15. When it includes an evaporator 23 and a heat exchanger 14, the first air inlet 42 is an air inlet opposite to and connected to the evaporator 23, and the second air inlet 41 is an air inlet opposite to and connected to the heat exchanger 14.

[0048] The present invention preferably utilizes the aforementioned door structure, which allows the door to be opened in dust removal mode. This enables the airflow driven by at least one of the dust removal fan, cooling fan, and dehumidification mode to blow dust and other debris from the internal space through the door to the outside of the inverter, achieving a dust removal effect. Furthermore, in the dust removal mode, the first and second air inlets of the present invention are respectively the first air inlet of the cooling system and the second air inlet of the dehumidification system, and their airflow channels also first pass through the first and second accommodating spaces, sharing this part of the airflow channel.

[0049] This invention effectively integrates dehumidification, cooling, and dust removal into a single structure within the frequency converter, with interconnected air ducts for all three functions. Especially in dust removal mode, the simultaneous operation of the dehumidification fan, cooling fan, and dust removal fan increases airflow and improves dust removal efficiency in the internal space and the first and second containment spaces. This interconnected structure allows the three spaces (air ducts) to be linked and the fans to share resources. While ensuring dehumidification and cooling, the airflow in dust removal mode is increased, improving the dust removal effect. Furthermore, the shared air ducts, inlet and outlet ports, and fans result in a more compact structure, reduced size, and cost savings.

[0050] See Figure 7The inverter housing base is shown in the figure. The second air inlet 41 on the left and the first air inlet 42 on the right are respectively set on the left and right sides of the base to ensure normal air intake for the dehumidification system and cooling system inside the left and right cavities.

[0051] This utility model also provides an air conditioner that includes the aforementioned frequency converter.

[0052] This utility model employs three independent specially designed air duct systems, which achieve internal protection of the inverter enclosure through different functional combinations; the left-side dry hot air duct design uses a heater to turn the left-side air intake into hot air, achieving the internal moisture protection function of the inverter; the right-side cooling air duct design uses an evaporator to turn the right-side air intake into cold air, assisting in the heat dissipation of the internal components of the inverter and ensuring the stability of system operation; the top dust removal air duct design uses multiple fans to blow air from top to bottom to remove internal dust and other debris.

[0053] This utility model also provides a control method for a frequency converter as described above, which includes: The judgment step is to determine whether the frequency converter needs to be operated in dehumidification mode, cooling mode, or dust removal mode. The control steps, when also including cooling fan 22 and dehumidifying fan 12: When dehumidification mode is required, the evaporator 23 and the cooling fan 22 are not operated, the heat exchanger 14 and the dehumidification fan 12 are operated, the cabinet door 15 is closed, and the dust removal fan 34 is turned off. When it is necessary to operate in cooling mode, the evaporator 23 and the cooling fan 22 are both controlled to run, the heat exchanger 14 and the dehumidifying fan 12 are both controlled to not run, the cabinet door 15 is controlled to close, and the dust removal fan 34 is controlled to turn off. When the dust removal mode is required, the evaporator 23 and the heat exchanger 14 are not operated, and the dehumidifying fan 12, the cooling fan 22 and the dust removal fan 34 are operated simultaneously or alternately. At the same time, the cabinet door 15 is opened.

[0054] The control logic of this utility model is as follows: When the dehumidification system is running, the dehumidification fan 12 draws air from the second air inlet 41 on the left, and the heat exchanger 14 operates to raise the temperature, so that the air drawn out of the cavity by the fan is hot air and blown into the interior of the cabinet to keep the interior of the cabinet dry. When this system is running, the frequency converter is not working, and the cabinet door should be closed to ensure the drying effect. When the cooling system is running, the cooling fan 22 draws air from the first air inlet 42 on the right, and the evaporator 23 operates to lower the temperature, so that the air drawn out of the cavity by the fan is cold air and blown into the interior of the cabinet to dissipate heat from the internal components of the frequency converter. When the system is running, the inverter is in working condition and the cabinet door is closed to ensure heat dissipation. When the dust removal system is running, the dehumidifying fan 12, cooling fan 22 and dust removal fan 34 run simultaneously, but the heat exchanger 14 and evaporator 23 do not work, the inverter does not work, the cabinet door is opened, and the left and right side fans and the top fan blow air alternately (the alternating air blowing here can be one fan running or any two fans running, and the air blowing is switched after running for a period of time), blowing the dust and other debris inside the inverter out of the cabinet. The air ducts when the three systems are working are as shown by the arrows in the figure.

[0055] This invention effectively integrates dehumidification, cooling, and dust removal into a single structure within the frequency converter, with interconnected air ducts for all three functions. Especially in dust removal mode, the simultaneous operation of the dehumidification fan, cooling fan, and dust removal fan increases airflow and improves dust removal efficiency in the internal space and the first and second containment spaces. This interconnected structure allows the three spaces (air ducts) to be linked and the fans to share resources. While ensuring dehumidification and cooling, the airflow in dust removal mode is increased, improving the dust removal effect. Furthermore, the shared air ducts, inlet and outlet ports, and fans result in a more compact structure, reduced size, and cost savings.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A frequency converter, characterized in that: include: The box (4) is equipped with a cooling system (1), a dehumidification system (2) and a dust removal system (3). The cooling system (1) can cool and dissipate heat in the internal space (5) of the box (4). The dehumidification system (2) can heat and dehumidify the internal space (5) of the box (4). The dust removal system (3) can blow air into the internal space (5) of the box (4) to remove dust. Components are installed in the internal space (5).

2. The frequency converter according to claim 1, characterized in that: The housing (4) includes a first side panel assembly (6) located on one side in the horizontal direction. The first side panel assembly (6) is provided with an evaporator (23), a first air inlet (42) and a first air outlet (43). The evaporator (23) is filled with refrigerant. One end of the first air inlet (42) is connected to the outside of the inverter and the other end is connected to the evaporator (23) so that gas outside the inverter can be introduced to exchange heat with the evaporator (23). One end of the first air outlet (43) is connected to the internal space (5) of the housing (4) and the other end is connected to the evaporator (23) so that gas after heat exchange with the evaporator (23) can be introduced into the internal space (5) for cooling.

3. The frequency converter according to claim 2, characterized in that: The first side panel assembly (6) includes a first mounting plate (21), which forms a first accommodating space (7). The evaporator (23) is disposed in the first accommodating space (7). The other end of the first air inlet (42) is connected to the first accommodating space (7), and the other end of the first air outlet (43) is connected to the first accommodating space (7).

4. The frequency converter according to claim 3, characterized in that: A cooling fan (22) is provided at the first air outlet (43). The cooling fan (22) can blow the airflow in the first accommodating space (7) to the internal space (5) of the box (4) through the first air outlet (43). There are at least two first air outlets (43) and at least two cooling fans (22). The cooling fans (22) are arranged one-to-one with the first air outlets (43). There are also at least two first air inlets (42).

5. The frequency converter according to claim 1, characterized in that: The housing (4) also includes a second side panel assembly (8) located on the other side in the horizontal direction. The second side panel assembly (8) is provided with a heat exchanger (14), a second air inlet (41) and a second air outlet (44). The heat exchanger (14) can release heat. One end of the second air inlet (41) is connected to the outside of the inverter and the other end is connected to the heat exchanger (14) so ​​that the gas outside the inverter can be introduced to the heat exchanger (14) for heating. One end of the second air outlet (44) is connected to the internal space (5) of the housing (4) and the other end is connected to the heat exchanger (14) so ​​that the gas heated by the heat exchanger (14) can be introduced into the internal space (5) for heating and dehumidification.

6. The frequency converter according to claim 5, characterized in that: The second side panel assembly (8) includes a second mounting plate (11), which forms a second accommodating space (9). The heat exchanger (14) is disposed in the second accommodating space (9). The other end of the second air inlet (41) is connected to the second accommodating space (9), and the other end of the second air outlet (44) is connected to the second accommodating space (9).

7. The frequency converter according to claim 6, characterized in that: A dehumidifying fan (12) is provided at the second air outlet (44). The dehumidifying fan (12) can blow the airflow in the second accommodating space (9) to the internal space (5) of the box (4) through the second air outlet (44). There are at least two second air outlets (44) and at least two dehumidifying fans (12). The dehumidifying fans (12) are arranged in a one-to-one correspondence with the second air outlets (44). There are also at least two second air inlets (41).

8. The frequency converter according to claim 1, characterized in that: The housing (4) also includes a top plate (31) at its top and a bottom plate (10) at its bottom. A dust removal fan (34) is provided on the top plate (31), and a first air inlet (42) and a second air inlet (41) are provided on the bottom plate (10). The dust removal fan (34) can drive the airflow outside the housing (4) to enter the internal space (5) of the housing (4) through the first air inlet (42) and the second air inlet (41).

9. The frequency converter according to claim 8, characterized in that: It also includes a door (15) connected to the housing (4) to open or close the internal space (5) of the housing (4). When dust removal is required, the door (15) is opened and the dust removal fan (34) can drive the airflow of the internal space (5) of the housing (4) to blow out of the housing (4) through the opened door (15). When it includes an evaporator (23) and a heat exchanger (14), the first air inlet (42) is an air inlet opposite to and connected to the evaporator (23), and the second air inlet (41) is an air inlet opposite to and connected to the heat exchanger (14).

10. An air conditioner, characterized in that: The inverter includes any one of claims 1-9.

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