Device and method for cleaning baghouse filters

A baghouse filter cleaning system comprising:

• a source of high pressure fluid;
• a manifold to deliver the high pressure fluid;
• at least one filter;
• and
• at least one acoustic generator connected to the manifold and positioned proximate the at least one filter, the acoustic generator comprising:
• a housing comprising a focusing surface and a lower opening;
• an inlet tube configured to transfer high pressure fluid to the housing;
• and
• a resonance chamber comprising a top opening facing the inlet tube, an outside surface, and a bottom surface continuous with the outside surface and closing off a bottom of the resonance chamber, the resonance chamber being located within the housing, such that the outside surface of the resonance chamber faces an inside surface of the housing, and also being axially aligned with and spaced apart from the inlet tube forming a gap between the inlet tube and the resonance chamber;
• wherein the high pressure fluid is delivered to the housing through the inlet tube and enters and exits the resonance chamber in a oscillating manner to generate a shock wave proximate the gap, and
• wherein the focusing surface is configured to direct the shock wave downward around the resonance chamber between the outside surface of the resonance chamber and the inside surface of the housing and through the lower opening to form a ring-shaped shock wave vortex.

A method for cleaning a baghouse filter with an acoustic generator comprising a housing comprising a focusing surface and a lower opening, an inlet tube configured to transfer high pressure fluid to the housing, and a resonance chamber comprising a top opening facing the inlet tube, an outside surface, and a bottom surface continuous with the outside surface and closing off a bottom of the resonance chamber, the resonance chamber being located within the housing, such that the outside surface of the resonance chamber faces an inside surface of the housing, and also being axially aligned with and spaced apart from the inlet tube forming a gap between the inlet tube and the resonance chamber;

• the method comprising the steps of:
• delivering a high pressure fluid to the housing via the inlet tube such that the high pressure fluid enters and exits the resonance chamber to generate a shock wave proximate the gap;
• creating a shock wave within the acoustic generator;
• utilizing the focusing surface of the housing to direct the shock wave downward past the resonance chamber between the outside surface of the resonance chamber and the inside surface of the housing and through the lower opening to form a ring-shaped shock wave vortex;
• and
• directing the ring-shaped shock wave vortex towards a bag house filter thereby cleaning the filter.