Constant water level humidifier

1. A constant water level humidifier, comprising an outer tank with an outer outlet disposed at the bottom, the outer outlet is disposed with an oscillating plate, the upper portion of the outer tank is disposed with an outer air vent connected to the outer world; wherein the outer tank is further disposed with an inner tank, the upper portion of the inner tank is disposed with an inner air vent connected to the outer air vent, the bottom portion of the inner tank is disposed with an inner outlet connected to the outer outlet of the outer tank and an inner inlet connected to the chamber of the outer tank, the inner inlet is disposed with a water level control mechanism.

2. The constant water level humidifier according to claim 1 , wherein the water level control mechanism comprises a valve block used to open and close the inner inlet and a floating body disposed in the inner tank, the floating body is connected to the valve block by a connecting rod.

3. The constant water level humidifier according to claim 2 , wherein the inner outlet further comprises a limit element being disposed with a limit through hole sleeved on the connecting rod.

4. The constant water level humidifier according to claim 1 , wherein the lower portion of the inner tank is connected to the outer tank by a lock catch structure.

5. The constant water level humidifier according to claim 1 , wherein the size of the inner outlet is larger than that of the outer outlet.