Color wheel device and projector

A color wheel device, comprising :

• a color wheel chamber, the color wheel chamber being used for accommodating a color wheel module, the color wheel chamber being provided with an air inlet and an air outlet;
• the color wheel module carrying a wavelength conversion layer configured to generate excited light under irradiation of excitation light;
• a heat exchanger, the exchanger comprising a heat-exchange core, the heat-exchange core being provided with a first channel through which air in the color wheel chamber passes, the air outlet of the color wheel chamber being communicated with a heat-exchange inlet of the first channel, and a heat-exchange outlet of the first channel being communicated with the air inlet of the color wheel chamber to form a closed circulating air duct;
• the first channel having multiple layers spaced apart from one another, and a space between two adjacent layers of the first channel forming a second channel for outside air passing;
• the second channel having an air inlet and an air outlet provided on two opposite surfaces of the heat exchanger, respectively;
• and
• an air propulsion device configured to drive air in the circulating air duct to flow.