A liquid aerating device is presented. The device includes a first inner channel through which air flows in a first direction, a second inner channel extending substantially parallel to the first inner channel, wherein liquid flows through the second inner channel in a second direction that is opposite of the first direction, and an aeration chamber. The aeration chamber is connected to the first inner channel and the second inner channel, and positioned such that the air flows into the first inner channel from the aeration chamber and the liquid flows out of the second inner channel into the aeration chamber.

A removable cartridge for use with a liquid diffusion device is provided. The removable cartridge includes a cartridge housing defining an internal housing cavity, partially filled with a liquid to be diffused, and a diffusion head positioned within the internal housing cavity with a venturi device for generating diffused liquid from the liquid contained in the internal housing cavity. The diffusion head defines at least a portion of a gas supply conduit that extends from a bottom end of the removable cartridge to the venturi device through the liquid to be diffused to enable the venturi device to be supplied with pressurized gas from an external source via the bottom end of the removable cartridge.

The present invention relates to a delivery system. In particular, the invention relates to a system for delivery of one or more products to a body of water for treating and/or disinfecting the body of water. The invention further relates to methods of using a delivery system of the invention for delivery of one or more products to a body of water for treating and/or disinfecting the body of water. Even more particularly, the invention relates to a system for delivery of ozone and/or chlorine to a swimming pool or spa for disinfection of pool or spa water.

A dissolution device comprising a tubular body comprising an inlet, an outlet and a side duct, said tubular body further comprising a first chamber fluidly connected to the side duct, and a second chamber fluidly connected to said first chamber through a chamber junction conduit; and a central body comprising an inlet portion and an outlet portion, said central body being located within the tubular body and attached to said tubular body; wherein the tubular body and the central body define a passage therebetween through which fluid can flow, wherein the first chamber is further fluidly connected to the passage through a first inner conduit and to an exterior of the tubular body through the side duct, and the second chamber is fluidly connected to the passage through a second inner conduit, and wherein the dissolution device comprises two gas dissolution zones. A dissolution system comprising said the dissolution device and a stabilizer tank fluidly connected to the dissolution device.

A fine bubble generator disclosed herein may include a body casing including an inlet and an outlet and a first fine bubble generation portion housed in the body casing and disposed between the inlet and the outlet. The first fine bubble generation portion may include one or more venturi flow paths. Each of the one or more venturi flow paths may include a diameter-decreasing flow path of which flow path diameter decreases from upstream to downstream and a diameter-increasing flow path which is disposed downstream of the diameter-decreasing flow path and of which flow path diameter increases from upstream to downstream. A slit may be defined in at least one venturi flow path of the one or more venturi flow paths, wherein the slit may be recessed outwardly in a radial direction from an inner surface of the venturi flow path. The slit may be disposed continuously from a first end coincident with a downstream end of the diameter-increasing flow path to a second end located upstream of the downstream end.

A power machine can include a frame, an engine supported by the frame, and an air intake system that directs intake air to the engine. The air intake system can include a filter assembly that includes a filter housing and a filter element positioned in the filter housing to filter contaminants from the intake air. A pressure source can be arranged to pressurize filtered air from the filter assembly and provide the pressurized filtered air to an intake of the engine. The air intake system can further include an ejector arranged to receive a portion of the pressurized filtered air and induce a suction flow at the filter housing to eject contaminants from the air intake system.