Refrigeration house balance window

The utility model relates to a balance window of a refrigeration house. Wherein the warehouse outer cover is connected to one end of the two-way valve device, the warehouse inner cover is connected tothe other end of the two-way valve device, the insect-proof net and the sweeping device are installed between the warehouse outer cover and the two-way valve device, and the insect-proof net comprises a rectangular frame and an insect-proof gauze fixedly connected into the rectangular frame; the sweeping device comprises two brush plates arranged on the two sides of the insect-proof net respectively, bristles fixedly connected to the sides, facing the insect-proof net, of the brush plates, and a driving mechanism for synchronously driving the two brush plates to reciprocate between the two opposite side edges of the insect-proof net. The anti-blocking device has the advantages that the blocked insect-proof net can be cleaned, and the effect of balancing the air pressure of the balance window of the refrigeration