Respirator and humidifying water tank assembly thereof

The utility model discloses a humidification water tank assembly which comprises a water tank, a humidification water tank cover, a humidification water tank cover and a humidification water tank cover. The anti-backflow pipe is arranged in the water tank, the end part of the first end of the anti-backflow pipe is connected with the water tank through the air inlet, and the distance between the opening of the second end of the anti-backflow pipe and the bottom of the water tank is larger than that between the opening of the first end and the bottom of the water tank; and the end part of the first end of the anti-backflow pipe is detachably connected with the water tank through the air inlet. The utility model further discloses a breathing machine. In this way, the anti-backflow pipe can bedetached, cleaned and replaced conveniently. 本申请公开了一种加湿水箱组件，该加湿水箱组件包括：水箱，开设有进气口和出气口；防倒灌管，设置于水箱内，防倒灌管的第一端的端部通过进气口与水箱连接，防倒灌管的第二端的开口与水箱的底部的距离比第一端的开口与水箱的底部的距离大；防倒灌管的第一端的端部通过进气口与水箱可拆卸地连接。本申请还公开了一种呼吸机。通过上述方式，能够便于防倒灌管的拆卸、清洗和更换。