Refrigerant circulating device and dryer

The utility model discloses a refrigerant circulating device and a dryer. The refrigerant circulating device comprises a rack, a compressor, a condenser, a throttler and an evaporator. The compressor, the evaporator and the condenser are all installed on the machine frame, and the compressor, the condenser, the throttler and the evaporator are sequentially connected through a pipeline. The throttler comprises a first throttling branch and a second throttling branch which are arranged in parallel, the first throttling branch is provided with an expansion valve, the second throttling branch is provided with a throttling element and two connectors, and the two connectors are connected to the two ends of the throttling element in series respectively; the rack is fixedly connected with a mounting table, and the two connectors are both mounted on the mounting table. The newly added throttling element is mounted on the mounting table through the two connectors, the throttling element is stabilized, the throttling el