Air supply system for spas

Apparatus for supplying air, under pressure, to aerate water in a spa, comprising:

• a housing, comprising:
• an air pressure chamber;
• a motor chamber;
• and
• a moisture proof partition separating said motor chamber from said air pressure chamber to prohibit moisture from passing directly from said air pressure chamber to said motor chamber;
• a blower mounted in said air pressure chamber, said blower comprising:
• a fan;
• and
• a blower housing containing said fan, the walls of said blower housing being sealed from said air pressure chamber except for small apertures for providing communication between the interior of said blower housing and said air pressure chamber such that said fan blows air through said apertures into said air pressure chamber;
• an inlet to said blower, said inlet located in said air pressure chamber;
• an air inlet duct, connected to supply air to said blower inlet from a location outside of said housing, said air inlet duct communicating with said air pressure chamber solely through said blower inlet and said blower, and sealed from said air pressure chamber to prevent water in said air pressure chamber from entering said air inlet duct without passing through said blower housing
• said air inlet duct passing through an opening in said partition to draw air from said location outside of said housing, said inlet duct sealed to said opening to prevent direct communication between said air pressure chamber and said motor chamber.

Apparatus for supplying air, under pressure, to aerate water in a spa, comprising:

• a housing, comprising:
• an air pressure chamber;
• a motor chamber;
• and
• a moisture proof partition separating said air pressure chamber from said motor chamber to prohibit moisture from passing directly from said air pressure chamber to said motor chamber;
• a blower, mounted within said air pressure chamber, said blower comprising a fan enclosed within a blower housing, said blower housing communicating with said air pressure chamber only through flow constricting orifices to supply air under pressure thereto, the inlet of said blower located in said air pressure chamber;
• an air inlet duct, connected to supply air to said blower inlet from a location outside of said housing, said air inlet duct communicating with said air pressure chamber solely through said blower inlet and said blower, and sealed from said air pressure chamber to prevent water in said air presure chamber from entering said air inlet duct without passing through said blower housing
• an air outlet duct, connecting said air pressure chamber to said spa, said air pressure chamber being subject to water flooding;
• a motor, mounted in said motor chamber, said motor sealed from direct communication with said air pressure chamber;
• means for connecting said motor to said blower, said connecting means passing through an aperture in said partition;
• and
• means for sealing said air pressure chamber from said motor chamber at said aperture.

Apparatus for supplying air, under pressure, to aerate water in a spa, comprising:

• a housing, comprising:
• an air pressure chamber;
• a motor chamber, located above said air pressure chamber;
• and
• a moisture proof partition separating said air pressure chamber from said motor chamber to prohibit moisture from passing directly from said air pressure chamber to said motor chamber;
• a blower mounted in said air pressure chamber, said blower comprising:
• a fan;
• a blower housing containing said fan, the walls of said blower housing having small apertures for providing communication between the interior of said blower housing and said air pressure chamber, such that said fan blows air through said apertures into said air pressure chamber;
• and
• an inlet to said blower, said inlet located in said air pressure chamber;
• an air inlet duct, connected to supply air to said blower inlet from a location outside of said housing, said air inlet duct communicating with said air pressure chamber solely through said blower inlet and said blower;
• said air inlet duct passing through an opening in said partition to draw air from said location outside of said housing, said inlet duct sealed to said opening to prevent direct communication between said air pressure chamber and said motor chamber through said opening;
• a motor, mounted in said motor chamber;
• means for connecting said motor to said blower to drive said blower, said connecting means passing through and aperture in said moisture proof partition;
• and
• means for sealing said air pressure chamber from said motor chamber at said aperture.