Combustible fuel burning fire pit

A fire pit comprising:

• an outer wall and an inner wall, the inner wall being spaced from the outer wall to form an air passage therebetween, the inner wall having an inwardly facing surface and defining a burn chamber;
• at least one outlet airflow ventilation hole at a top portion of the burn chamber, the outlet airflow ventilation hole in fluid communication with the air passage and configured to permit airflow from the air passage into the burn chamber;
• at least one inlet ventilation hole opening in communication with the air passage, the at least one inlet ventilation hole configured to permit airflow into the air passage;
• a bottom wall at a bottom portion of the fire pit;
• a fuel grate above the bottom wall and configured to support a combustible fuel in the burn chamber, the fuel grate comprising an array of holes sized to permit airflow from below the fuel grate to the combustible fuel in the burn chamber and also sized to permit passage of ash from the combustible fuel burned in the burn chamber;
• an air chamber below the fuel grate;
• an ash catcher disposed between the bottom wall and the fuel grate, the ash catcher configured to catch ash passing through the array of holes in the fuel grate when the combustible fuel is burned in the burn chamber, the ash catcher and the fuel grate being configured in a manner permitting displacement of the fuel grate independent of and away from the ash catcher from a first position where the fuel grate is above the ash catcher and located to drop ash to the ash catcher during use to a second position where the fuel grate is displaced from the ash catcher, and the ash catcher is accessible for cleaning;
• and
• a support structure disposed between the bottom wall and the ash catcher, the support structure configured to support the ash catcher in a position below the fuel grate and above the bottom wall in a manner allowing a flow of air between the bottom wall and the ash catcher and allowing the flow of air to flow to the air chamber below the fuel grate,
• wherein the ash catcher is removable relative to each of the fuel grate, the inner wall, and the outer wall and is accessible for cleaning when the fuel grate is in the second position.

A fire pit comprising:

• an outer wall and an inner wall, the inner wall being spaced from the outer wall to form an air passage therebetween, the inner wall having an inwardly facing surface and defining a burn chamber;
• at least one outlet airflow ventilation hole at a top portion of the burn chamber, the airflow ventilation hole in fluid communication with the air passage and configured to permit airflow from the air passage into the burn chamber;
• at least one inlet ventilation hole opening in communication with the air passage, the inlet ventilation hole configured to permit airflow into the air passage;
• a bottom wall at a bottom portion of the fire pit;
• a fuel grate above the bottom wall and configured to support a combustible fuel in the burn chamber, the fuel grate comprising an array of holes sized to permit airflow from below the fuel grate to the combustible fuel in the burn chamber and also sized to permit passage of ash from the combustible fuel burned in the burn chamber;
• an air chamber below the fuel grate;
• an ash catcher disposed between the bottom wall and the fuel grate, the ash catcher configured to catch ash passing through the array of holes in the fuel grate when the combustible fuel is burned in the burn chamber,
• the ash catcher and the fuel grate being configured in a manner permitting displacement of the fuel grate independent of and away from the ash catcher from a first position where the fuel grate is above the ash catcher and located to drop ash to the ash catcher during use to a second position where the fuel grate is displaced from the ash catcher, and the ash catcher is accessible for cleaning, wherein, due to structure of the fire pit, the permitted displacement of the fuel grate independent of and away from the ash catcher requires an initial displacement of vertical separation of the fuel grate from the ash catcher,
• the ash catcher being configured to permit displacement of the ash catcher relative to the bottom wall from a third position where the ash catcher is above the bottom wall to a fourth position where the ash catcher is displaced from the bottom wall for disposing of ash and cleaning, wherein, due to the structure of the fire pit, the permitted displacement of the ash catcher relative to the bottom wall requires an initial displacement of vertical separation of the ash catcher from the bottom wall;
• and
• wherein the ash catcher is removable relative to each of the fuel grate, the inner wall, and the outer wall and is accessible for cleaning when the fuel grate is in the second position.