Refrigeration house ventilation device with refrigeration function

The invention discloses a refrigeration house ventilation and air exchange device with a refrigeration function, and relates to the technical field of air exchange devices.The refrigeration house ventilation and air exchange device comprises a mounting plate fixed to the inner wall of a refrigeration house, the outer wall of the mounting plate is connected with a ventilation box through a detachable mechanism, a ventilation hole is formed in the outer wall of one side of the ventilation box, and a ventilation pipe is inserted into the inner wall of the ventilation hole; a ventilation pipe is arranged in the ventilation box, the ventilation pipe penetrates through the mounting plate and extends outdoors, a drainage plate of a hollow structure is arranged on one side of the inner wall of the top of the ventilation box, the bottom of the drainage plate is designed to be of an inclined plane, a condenser is arranged in the drainage plate, one end of the condenser communicates with the ventilation pipe, and the ot