Dehumidification equipment of fan frequency converter, working method of dehumidification equipment and fan frequency converter

Abstract

The invention discloses dehumidification equipment of a fan frequency converter, a working method of the dehumidification equipment and the fan frequency converter, and belongs to the technical field of fan frequency converter dehumidification. The dehumidification equipment comprises a movable dehumidification host, the movable dehumidification host is provided with an air inlet, an air outlet and a water outlet, and the air inlet is provided with a ventilation pipeline part; the movable dehumidification host comprises a cold centrifugal fan, a condensing heat exchanger and a controller, and a humidity threshold value is preset in the controller; the controller can control starting and stopping of the movable dehumidification main machine on the basis of the humidity threshold value and according to the air humidity data of the air inlet. During starting, to-be-dehumidified air can be extracted by the centrifugal fan and is condensed and dehumidified by the heat exchanger, and dry air is discharged from the air outlet; the water outlet is provided with a collecting assembly. By externally connecting the dehumidification equipment with high automation degree, the environment humidity can be effectively improved, the dehumidification efficiency is improved, and the equipment is good in safety and adaptability, convenient to deploy quickly and applicable to severe environments such as high humidity and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of dehumidification of fan frequency converters, and in particular relates to a dehumidification device of a fan frequency converter and a working method thereof, and a fan frequency converter. Background Art

[0002] Fan inverter: an important equipment of wind turbine generator set, usually installed at the tower base, with high requirements for internal humidity during operation. Usually, vents are connected to the front and rear cabinet doors, and a cooling fan is installed on the rear cabinet door. The vents have their own filters to play a role in heat dissipation and ventilation.

[0003] With the widespread application of wind power generation technology, fan inverters, as core electrical equipment, have strict requirements on humidity in their operating environment. In the prior art, fan inverters often use internal heaters to heat and dehumidify the cabinet, but this method has the following significant defects: Low efficiency: Heating and dehumidification rely on hot air replacement. In a well-sealed inverter cabinet, the moisture discharge speed is slow, especially in humid environments (such as mountains, seaside, rainy and snowy weather), the dehumidification time takes several hours or even longer, which seriously delays the start-up of the fan. High energy consumption: Continuous heating leads to waste of electricity, and the aging of electronic components may be accelerated due to excessive temperature in the cabinet. Some existing dehumidification devices are not specially adapted for fan inverter dehumidification and lack intelligent control functions. In summary, the current fan inverter has a slow moisture discharge speed during operation, and the degree of automatic control of dehumidification operation is not high, and its applicability to different environments needs to be further improved. Summary of the invention

[0004] The present invention provides a dehumidification device of a fan inverter and a working method thereof, and a fan inverter, aiming to solve the problems that the current fan inverter has a slow moisture discharge speed during operation, a low degree of automated control of the dehumidification operation, and the applicability to different environments needs to be further improved.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: The present invention provides a dehumidification device for a fan inverter, comprising a movable dehumidification host, the movable dehumidification host having an air inlet, an air outlet and a drain, the air inlet being provided with a ventilation duct portion; the movable dehumidification host can be connected to the outside of the fan inverter through the ventilation duct portion so as to control the air humidity outside and inside the fan inverter; wherein: The mobile dehumidification host includes a cold centrifugal fan, a condensing heat exchanger and a controller, and the controller is preset with a humidity threshold; the controller can control the start and stop of the mobile dehumidification host based on the humidity threshold and the air humidity data of the air inlet; At startup, the air to be dehumidified can be drawn by the centrifugal fan and condensed and dehumidified by the heat exchanger, and the dry air is discharged from the air outlet; The drain outlet is configured with a collection component for collecting the dehumidified water.

[0006] In some embodiments, a humidity sensor is provided in the ventilation pipeline section. The humidity sensor can collect air humidity data in real time and upload the collected air humidity data to the controller.

[0007] In some embodiments, the ventilation pipeline section includes a flexible air duct. One end of the flexible air duct is connected to the air inlet, and the other end is provided with a telescopic adapter interface that can be connected to the air outlet of the fan frequency converter.

[0008] Furthermore, the telescopic adapter interface includes an adapter frame body configured with two buckles, and each buckle is configured with an adjustment screw.

[0009] Furthermore, the adapter frame body has magnetism.

[0010] In some embodiments, the bottom of the movable dehumidification host is provided with universal wheels, and the movable dehumidification host is made of aluminum alloy material; The movable dehumidification host further includes a temperature sensor that can monitor the temperature data inside the movable dehumidification host in real time and upload it to the controller.

[0011] In some embodiments, the collection component includes a drain pipe and a water collection tank. One end of the drain pipe is connected to the drain outlet, and the other end is connected to the water collection tank.

[0012] Furthermore, the water collection tank is provided with a water level gauge. The controller presets a water level threshold, and the water level gauge can monitor the water level data of the water collection tank in real time and upload it to the controller.

[0013] The present invention also provides a working method for a dehumidification device of a fan frequency converter, including the following steps: S1. Install the dehumidification device on the fan frequency converter, adjust and check the corresponding components, and complete the installation and inspection before work; S2. After powering on the dehumidification device, the controller controls the start and stop of the movable dehumidification host based on the humidity threshold and according to the air humidity data at the air inlet; If starting: the centrifugal fan extracts the humid air inside the fan frequency converter, condenses and dehumidifies it through the heat exchanger, the dehumidified air is discharged from the air outlet, and the dehumidified water is discharged from the drain outlet to the collection component; Meanwhile, when the air humidity data at the air inlet is less than the humidity threshold, the controller controls to turn off the movable dehumidification host.

[0014] The present invention also provides a fan frequency converter, which includes the dehumidification device of the fan frequency converter as described above.

[0015] Compared with the prior art, the dehumidification device of a fan frequency converter, its working method, and the fan frequency converter of the present invention have the following beneficial effects: The dehumidification device of a fan frequency converter of the present invention can significantly improve the dehumidification efficiency. Compared with the existing heating dehumidification method that takes several hours, the present invention can greatly improve the dehumidification efficiency by connecting an external condensing dehumidification device, shorten the startup waiting time of the fan frequency converter, and improve the power generation efficiency. The dehumidification device of the present invention has good safety and reliability: the device is completely independent of the frequency converter cabinet, with non-invasive disassembly and maintenance, without damaging the sealing structure, avoiding electrical safety hazards caused by opening the cabinet operation, and using the condensing dehumidification technology to avoid the risk of high temperature inside the cabinet caused by traditional heating, prolonging the service life of electronic components, and having good reliability of the device. The present invention can be flexibly adapted and quickly deployed: the device is simple and lightweight, with good adaptability, without customized transformation, easy to quickly deploy, and can operate stably in harsh environments such as high humidity (such as by the sea, during the rainy season) and low temperature (such as in snowy wind farms), supporting 220V / 380V general power supply, and directly taking power from the maintenance power supply at the tower base, which is very convenient. In addition, the dehumidification device of the present invention has intelligent and automatic control: it supports remote operation via WiFi / 4G networking and local automatic control (in the scenario without networking). The operation and maintenance personnel can remotely monitor the humidity in real time and operate, greatly reducing the labor cost. The overall power of the device of the present invention is small, but the dehumidification effect is excellent. The condensed water can be connected to the external discharge unit or collected in the water collection tank to avoid secondary evaporation causing pollution to the working environment of the fan frequency converter, effectively improving the environmental humidity, increasing the dehumidification efficiency, and having better practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings in the specification are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0017] Figure 1 It is a schematic structural diagram of the connection between the dehumidification device of the fan frequency converter of the present invention and the fan frequency converter, as well as its working method and the fan frequency converter; Figure 2 It is a schematic working state diagram of the retractable adapter interface in the dehumidification device of a fan frequency converter, its working method, and the fan frequency converter of the present invention; Figure 3 It is a schematic flow diagram of the air circulation path and condensed water treatment in the dehumidification device of a fan frequency converter, its working method, and the fan frequency converter of the present invention; Figure 4 It is a schematic control logic diagram of the working method in the dehumidification device of a fan frequency converter, its working method, and the fan frequency converter of the present invention.

[0018] Reference numerals: 1, movable dehumidification main unit; 2, air inlet; 3, air outlet; 4, drain outlet; 5, fan frequency converter; 6, humidity sensor; 7, flexible air duct; 8, telescopic adapter interface; 81, adapter housing; 82, buckle; 83, adjusting screw; 9, drain pipe; 10, water collection tank; 11, fan frequency converter air outlet. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0024] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "installed", "connected", "linked" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] How to realize the dehumidification of the fan frequency converter cabinet with high efficiency, safety and low cost by optimizing the dehumidification structure and the automatic control logic, and then improve its working efficiency and stability.

[0026] Based on the above, as Figures 1-3 shown, a dehumidification device for a fan frequency converter of the present invention includes a movable dehumidification host 1, the movable dehumidification host 1 has an air inlet 2, an air outlet 3 and a drain outlet 4, and the air inlet 2 is configured with a ventilation pipeline part; the movable dehumidification host 1 can be connected to the outside of the fan frequency converter 5 through the ventilation pipeline part to control the air humidity outside and inside the fan frequency converter 5; wherein: The movable dehumidification host 1 includes a cold centrifugal fan, a condensation heat exchanger and a controller, and the controller is preset with a humidity threshold; the controller can control the start and stop of the movable dehumidification host 1 based on the humidity threshold and according to the air humidity data of the air inlet 2; When starting, the air to be dehumidified can be extracted by the centrifugal fan and dehumidified by condensation through the heat exchanger, and the dry air is discharged from the air outlet 3; The drain outlet 4 is configured with a collection component, and the collection component is used to collect the water after dehumidification.

[0027] The present invention can flexibly adapt to different installation scenarios, facilitate the sharing of multiple devices or position adjustment. Through the intelligent start and stop of the controller combined with the humidity threshold, the manual intervention is reduced, the energy consumption is reduced and the service life of the device is extended. During the dehumidification process, the dry air after condensation dehumidification can circulate to the inside of the fan frequency converter 5 through a relatively closed working environment, effectively preventing electrical failures of the fan frequency converter 5 caused by a humid environment, etc., and improving the working efficiency and stability of the fan frequency converter 5. And the condensed water after dehumidification is uniformly collected through the drain outlet 4, avoiding re-polluting the air humidity of the fan frequency converter 5 or the surrounding environment and increasing the workload.

[0028] As Figure 2As shown, in some embodiments, a humidity sensor 6 is provided in the ventilation pipeline section of the present invention. The humidity sensor 6 collects and uploads air humidity data to the controller in real time. By directly measuring the air humidity in the intake pipeline through the humidity sensor 6, the controller can adjust the operating state of the device in real time to ensure that the humidity is strictly controlled within the range of the humidity threshold. Moreover, data support can be provided for the operation and maintenance of the dehumidification device and the fan frequency converter 5 through the recording of long-term humidity data.

[0029] The ventilation pipeline section of the present invention includes a flexible air duct 7. One end of the flexible air duct 7 is connected to the air inlet 2, and the other end is provided with a telescopic adapter interface 8. The telescopic adapter interface 8 can be connected to the air outlet 11 of the fan frequency converter. This ventilation pipeline section can adapt to the air outlets of fan frequency converters 5 of different sizes, reducing the restrictions on installation conditions. The flexible air duct 7 can be bent to adapt to complex spatial layouts. The telescopic interface 8 can ensure tight pipeline connection and avoid air leakage, which may lead to a decrease in dehumidification efficiency.

[0030] Furthermore, the telescopic adapter interface 8 includes an adapter frame 81. The adapter frame 81 is configured with two buckles 82, and each buckle 82 is configured with an adjustment screw 83. The present invention adapts to air outlets of different specifications through the adjustment screw 83, improving the versatility of the device. The buckle design simplifies the fixing method.

[0031] In some specific embodiments, the adapter frame 81 of the present invention has magnetism, which can shorten the deployment time, avoid fixed openings on the surface of the fan frequency converter 5, etc., and is convenient for disassembly and assembly, facilitating equipment maintenance or position adjustment.

[0032] As Figure 4 shown, the present invention also provides a working method for a dehumidification device of a fan frequency converter, including the following steps: S1. Install the dehumidification device on the fan frequency converter, adjust and check the corresponding components, and complete the installation and inspection before work; S2. After powering on the dehumidification device, the controller controls the start and stop of the movable dehumidification host based on the humidity threshold and according to the air humidity data at the air inlet. If starting: the centrifugal fan extracts the humid air in the fan frequency converter, condenses and dehumidifies it through the heat exchanger, and the dehumidified air is discharged from the air outlet, and the dehumidified water is discharged from the drain port to the collection component; Meanwhile, when the air humidity data at the air inlet is less than the humidity threshold, the controller controls to turn off the movable dehumidification host. Through the working method of the dehumidification device, human intervention can be reduced, the control accuracy and safety can be improved, and it is convenient for fault troubleshooting and maintenance records.

[0033] The present invention also provides a fan frequency converter, which includes a dehumidification device such as the fan frequency converter described above. The fan frequency converter and the dehumidification device of the present invention can realize linkage start and stop, and the dehumidification efficiency can be optimized through an external dehumidification device.

[0034] The dehumidification device of a fan frequency converter and its working method, and the fan frequency converter of the present invention are further described in detail below through specific embodiments.

[0035] The dehumidification device of a fan inverter of the present invention comprises the following parts.

[0036] The movable dehumidifier host 1 has a built-in condensing heat exchanger, a centrifugal fan, a humidity sensor, a temperature sensor and a control circuit. The outer shell of the movable dehumidifier host 1 is made of corrosion-resistant aluminum alloy, and a protective grounding point is provided on the outer shell. Universal wheels are installed at the bottom of the outer shell for easy movement and positioning.

[0037] Retractable adapter interface 8 in the ventilation duct section: The retractable adapter interface 8 is designed with a quick-release buckle 82, and is also magnetically designed to connect to the vent on the front cabinet door of the inverter. It is compatible with models whose vent sizes are smaller than the retractable adapter interface 8. The adapter frame 81 of the retractable adapter interface 8 has a built-in adjustment screw 83, and the telescopic range is adjusted by turning the knob to ensure a close fit with vents of different sizes. At the same time, the magnetic interface can also ensure that the retractable adapter interface 8 can adapt to vents of different shapes, and the size can be customized, with good adaptability.

[0038] In addition, the present invention also has a hygroscopic filter: the hygroscopic filter can be installed on the outside of the air inlet of the rear cabinet door of the fan inverter 5. The hygroscopic filter adopts a multi-layer composite filter (primary filtration + activated carbon adsorption), has hygroscopic and dustproof functions, and can be disassembled for cleaning or replacement.

[0039] The flexible air duct tube 7 of the present invention is connected to the adapter frame 81 installed on the front fan inverter 5 and the air inlet 2. The flexible air duct tube 7 is made of corrugated silicone material, is resistant to high temperatures and can be bent to adjust the angle.

[0040] The controller of the present invention supports WiFi / 4G communication modules and can be connected to the mobile phone terminal of the operation and maintenance personnel or the centralized control and monitoring platform. The device body integrates humidity threshold setting, timed operation, and fault alarm functions, and is equipped with a local touch screen operation interface.

[0041] The drainage part of the present invention has a power supply and a condensate water treatment module. Among them, the power cord is equipped with a multi-functional plug (supporting 220V / 380V alternating current), which can be directly connected to the maintenance power supply of the fan tower base. The condensate water is collected into the transparent water collection tank 10 through the built-in diversion groove. Preferably, a water level gauge can be installed in the water collection tank 10, and it will automatically stop when full and send an alarm signal. The drain port 4 can also be externally connected to a drain pipe and led to the tower base drainage system. This can avoid the secondary evaporation of condensate water and affect the working efficiency of the fan frequency converter.

[0042] The working principle and operation process of the dehumidification device of the present invention when connected to the fan frequency converter 5.

[0043] Deployment stage: Fix the moisture absorption filter outside the ventilation opening of the rear cabinet door of the fan frequency converter 5, connect it to the ventilation opening of the front cabinet door through the retractable adapter interface 8 of the quick-release buckle magnetic attraction type, and connect the flexible air duct 7 to the movable dehumidification host 1.

[0044] Startup stage: After being powered on, the humidity sensor continuously detects the air humidity inside the cabinet of the fan frequency converter 5. The humidity sensor is installed inside the flexible air duct 7 at the position of the retractable adapter interface 8 of the front cabinet door. If the humidity is higher than the set threshold (such as 50%RH), the dehumidification mode will be automatically started. Optionally, the controller can cooperate with the temperature and humidity sensor inside the fan frequency converter 5 to start and stop.

[0045] The air circulation path of the present invention: The centrifugal fan extracts the humid air inside the cabinet of the fan frequency converter 5, condenses and dehumidifies it through the heat exchanger, discharges the dry air into the tower base environment, and the external air enters the cabinet of the fan frequency converter 5 through the air inlet of the rear cabinet door where the moisture absorption filter is installed, forming a closed cycle. The condensate water is collected into the water collection tank or the external discharge pipe through the diversion groove built in the water collection tank 10 to avoid secondary evaporation.

[0046] Automation control: When the dehumidification device is connected to the network, it can be started and stopped, the threshold can be adjusted, and the operating status can be viewed through the remote control terminal, and it has the function of accessing the temperature and humidity data inside the fan frequency converter 5. After dehumidification is completed, it will automatically stop and send a work log to the remote control terminal. When not connected to the network, the device supports timed operation or local threshold control, and the work log will be displayed on the device screen after dehumidification is completed.

[0047] A dehumidification device for a fan frequency converter of the present invention can be adapted to coastal wind farms and wind farms in mountainous areas during the rainy season. It can achieve emergency dehumidification, provide conditions for the quick restart of the fan frequency converter 5 after a long-term shutdown, regularly control the humidity of the fan frequency converter cabinet 5, and extend the service life of the fan frequency converter cabinet 5.

[0048] A dehumidification device for a fan frequency converter of the present invention. The device can be completely independent of the frequency converter cabinet body, and realizes dehumidification through an externally connected ventilation port, without the need to transform the cabinet body, thus avoiding the risk of damaging the sealing performance and electrical safety. This device efficiently replaces moisture in a closed environment through a cycle path of absorbing moisture inside the cabinet and draining it outside. The speed is more than three times faster than the existing conventional dehumidification methods. The present invention is based on a dynamic start-stop logic for real-time humidity detection, combined with remote and local control, to achieve automatic operation. Moreover, the device adopts multi-size adaptive interfaces, which are compatible with the specifications of the ventilation ports of mainstream fan frequency converters. The deployment or removal time does not exceed ten minutes, improving the working efficiency on the basis of optimizing the dehumidification effect, and having better applicability.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention; any ordinary technical personnel in the industry can smoothly implement the present invention according to what is shown in the specification and the above; however, any slight changes, modifications and evolutions made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A dehumidification device with a fan inverter, characterized in that: The invention comprises a movable dehumidification main unit (1), wherein the movable dehumidification main unit (1) has an air inlet (2), an air outlet (3) and a water outlet (4), wherein the air inlet (2) is provided with a ventilation duct portion; the movable dehumidification main unit (1) can be connected to the outside of a fan inverter (5) via the ventilation duct portion so as to control the air humidity outside and inside the fan inverter (5); wherein: The mobile dehumidification host (1) comprises a cold centrifugal fan, a condensing heat exchanger and a controller, wherein the controller is preset with a humidity threshold; the controller is capable of controlling the start and stop of the mobile dehumidification host (1) based on the humidity threshold and according to air humidity data at the air inlet (2); When starting, the air to be dehumidified can be drawn by the centrifugal fan and condensed and dehumidified by the heat exchanger, and the dry air is discharged from the air outlet (3); The drain outlet (4) is provided with a collecting component, and the collecting component is used to collect dehumidified water.

2. The dehumidification device of the fan inverter according to claim 1, characterized in that: The ventilation duct section is provided with a humidity sensor (6), and the humidity sensor (6) is capable of collecting air humidity data in real time and uploading the collected air humidity data to the controller.

3. The dehumidification device of the fan inverter according to claim 1, characterized in that: The ventilation duct section comprises a flexible air duct tube (7), one end of the flexible air duct tube (7) is connected to the air inlet (2), and the other end is provided with a retractable adapter interface (8), and the retractable adapter interface (8) can be connected to the air outlet (11) of the fan inverter.

4. The dehumidification device of the fan inverter according to claim 3 is characterized in that: The telescopic adapter interface (8) comprises an adapter frame (81), the adapter frame (81) is configured with two buckles (82), and each buckle (82) is configured with an adjusting screw (83).

5. The dehumidification device of the fan inverter according to claim 4, characterized in that: The adapter frame (81) is magnetic.

6. The dehumidification device of the fan inverter according to claim 1, characterized in that: The bottom of the movable dehumidification main unit (1) is provided with universal wheels, and the movable dehumidification main unit (1) is made of aluminum alloy; The movable dehumidification host (1) further comprises a temperature sensor, which is capable of monitoring temperature data in the movable dehumidification host (1) in real time and uploading the temperature data to the controller.

7. The dehumidification device of the fan inverter according to claim 1, characterized in that: The collection assembly comprises a drainage pipe (9) and a water collecting tank (10); one end of the drainage pipe (9) is connected to the drainage port (4), and the other end is connected to the water collecting tank (10).

8. The dehumidification device of the fan inverter according to claim 7, characterized in that: The water collecting tank (10) is provided with a water level meter, the controller is preset with a water level threshold, and the water level meter can monitor the water level data of the water collecting tank (10) in real time and upload the data to the controller.

9. A method for operating a dehumidification device of a fan inverter according to any one of claims 1 to 8, characterized in that: The steps include: S1. Install the dehumidification equipment on the fan inverter (5), and adjust and check the corresponding components to complete the installation and inspection before work; S2, after the dehumidification device is powered on, the controller controls the start and stop of the mobile dehumidification host (1) based on the humidity threshold and the air humidity data of the air inlet (2); If the mobile dehumidification host (1) is started, the centrifugal fan extracts the moist air in the fan inverter (5), condenses and dehumidifies the air through the heat exchanger, and the dehumidified air is discharged from the air outlet (3), and the dehumidified water is discharged from the drain outlet (4) to the collection component; At the same time, when the air humidity data at the air inlet (2) is less than the humidity threshold, the controller controls the mobile dehumidification host (1) to be turned off.

10. A fan frequency converter, characterized in that: The fan inverter comprises a dehumidification device according to any one of claims 1 to 8.

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