Humidification device and respiratory humidification and blowing apparatus including the same

A humidification device comprising:

• a reservoir for storing water;
• a vaporizer for vaporizing the water supplied to the vaporizer;
• a water supply passage connected to the reservoir at one end portion, and connected to the vaporizer at another end portion, wherein the water supply passage is filled with the water flowing into the water supply passage when the water stored in the reservoir flows into the water supply passage through the one end portion;
• a gas introduction passage connected to an intermediate position of the water supply passage;
• a gas introduction source for introducing gas into the water supply passage through the gas introduction passage so as to push out, by using pressure of the introduced gas, toward the vaporizer the water filled in a portion of the water supply passage between the intermediate position and the other end portion, thereby supplying the water to the vaporizer;
• a housing, wherein the reservoir, the vaporizer, the water supply passage, and the gas introduction passage are all disposed within said housing, wherein said housing has a placement surface configured to receive a blowing device thereon, wherein a projection projects outwards from said placement surface, and wherein a flow passage is defined within said projection, said flow passage directly receiving the vaporized water from said vaporizer;
• a lid provided at said placement surface and configured to provide selective access to said reservoir;
• a penetration preventer for preventing penetration of the water from the water supply passage to the gas introduction source, said penetration preventer being provided in the gas introduction passage;
• and
• a controller for controlling an operation of the gas introduction source, wherein
• the controller drives the gas introduction source in an intermittent manner such that filling of the water supply passage with the water and introduction of the gas to the intermediate position are repeated alternately in terms of time.