Dehumidifier

A dehumidifier, comprising:

• a machine body;
• a housing, the machine body being located in the housing, and the housing including:
• a back plate including an inner surface and an outer surface;
• the inner surface being a surface of the back plate proximate to an interior of the machine body, and the outer surface being a surface of the back plate away from the interior of the machine body;
• and
• a drainage hole located in the back plate and extending through the back plate along a thickness direction of the back plate;
• a drainage pipe located in the housing;
• an end of the drainage pipe being communicated with the drainage hole;
• the drainage pipe including an extending portion, and the extending portion extending along a direction of the inner surface of the back plate towards the outer surface;
• and
• a sealing plug assembly including a sealing plug body and a connecting member;
• wherein the sealing plug assembly is configured to seal the drainage hole in a case where the dehumidifier does not require drainage, and the sealing plug body is disposed on the connecting member;
• wherein the sealing plug body is detachably connected to the extending portion, and the sealing plug body includes:
• a first annular structure;
• a second annular structure;
• the first annular structure and the second annular structure being spaced apart along a radial direction of the sealing plug body;
• and
• a first cavity defined between the first annular structure and the second annular structure;
• the first cavity being located at a side of the sealing plug body proximate to the machine body, and at least a portion of the extending portion being sealingly connected to the first cavity, wherein
• the first annular structure and the second annular structure are provided by the connecting member extending towards the machine body;
• and the first annular structure and the second annular structure are located at a side of the sealing plug body proximate to the machine body, and the first annular structure is located at an inner side of the second annular structure along a radial direction of the second annular structure.