Pressure-equalizing device and housing having same

A pressure-equalizing device, comprising:

• a lattice-like cage with a gas passage opening through which gas can flow in a throughflow direction and a sealing surface, the gas passage opening connecting an inside and an outside of the pressure-equalizing device in a flow-conducting manner,
• wherein the gas passage opening comprises an end face facing toward the outside and is covered by a gas-permeable membrane, wherein the gas-permeable membrane comprises a circular functional surface that is delimited by a first outside diameter and is assigned a pressure-relief valve,
• wherein the pressure-relief valve comprises a burst protector and is circular ring-shaped, with an inside diameter which sealingly encloses the gas passage opening on an outer circumference, and with a sealing lip with a second outside diameter, the gas-permeable membrane and the pressure-relief valve being in a functional parallel configuration, and
• wherein the gas-permeable membrane and the pressure-relief valve jointly spatially separate the inside and the outside from one another,
• wherein the sealing lip sealingly contacts the sealing surface with elastic preloading, and is configured to lift off the sealing surface and be brought into an open position to provide a flow-conducting connection between the inside and the outside for emergency degassing of the inside,
• wherein the end face and the gas-permeable membrane are assigned adjacently to one another with a clearance in the throughflow direction, and
• wherein the first outside diameter of the circular functional surface substantially corresponds to the second outside diameter of the sealing lip, and wherein a ratio of the first outside diameter to the second outside diameter is 0.9 to 1.1.