Dehumidification device

The utility model relates to a dehumidification device which comprises a rotating wheel dehumidification module, a first-stage rotating wheel, a second-stage rotating wheel and a first conveying pipe communicated between the first-stage rotating wheel and a treatment area of the second-stage rotating wheel. And the air mixing module comprises a processor, a second conveying pipe and a first branch pipe, the processor communicates with the air outlet side of the second-stage rotating wheel, one end of the second conveying pipe is used for connecting indoor return air, the other end of the second conveying pipe communicates with the first conveying pipe, and the first branch pipe communicates between the second conveying pipe and the processor. In the process that the second conveying pipe is connected into the indoor return air, one part of air is conveyed into the first conveying pipe and can meet the dehumidification requirement of the target environment under the treatment of the rotating wheel dehumidification module, and the other part of air and the air treated by the second-stage rotating wheel are mixed in the processor and then fed into the target environment, so that the dehumidification requirement of the target environment is met. Therefore, the temperature requirement and the cleanliness requirement of the target environment are met, the treatment air volume of the rotating wheel dehumidification module is reduced, and the dehumidification energy consumption and the regeneration energy consumption are reduced.