초록 ▼

An automatic tank clean out system provided in the slurry collection tank a soil reduction system. When the slurry collection tank becomes full, the vacuum system is automatically shut down to prevent the slurry mixture from being drawn into the vacuum pump. When it becomes necessary to empty the sl

An automatic tank clean out system provided in the slurry collection tank a soil reduction system. When the slurry collection tank becomes full, the vacuum system is automatically shut down to prevent the slurry mixture from being drawn into the vacuum pump. When it becomes necessary to empty the slurry collection tank, the liquid contents can be drained through a valve in the tank. A series of nozzles, such as fan nozzles, are provided which are connected to a water supply pipe running axially through the tank. These fan nozzles are actuated to deliver high pressure water to automatically clean the tank.

대표청구항 ▼

An automatic tank clean out system provided in the slurry collection tank a soil reduction system. When the slurry collection tank becomes full, the vacuum system is automatically shut down to prevent the slurry mixture from being drawn into the vacuum pump. When it becomes necessary to empty the sl

An automatic tank clean out system provided in the slurry collection tank a soil reduction system. When the slurry collection tank becomes full, the vacuum system is automatically shut down to prevent the slurry mixture from being drawn into the vacuum pump. When it becomes necessary to empty the slurry collection tank, the liquid contents can be drained through a valve in the tank. A series of nozzles, such as fan nozzles, are provided which are connected to a water supply pipe running axially through the tank. These fan nozzles are actuated to deliver high pressure water to automatically clean the tank. aced equidistant from any adjacent openings around the perimeter of the plate, and wherein a first of the three openings is centered along an imaginary line located at a forty five degree angle above horizontal. 2. The oven of claim 1, wherein the three openings each have a generally elliptical shape and are each positioned to have an edge located adjacent an edge of the fan chamber in order to provide a smooth flow path for the heated air passing into the cooking chamber. 3. The oven of claim 1, wherein a second of the three openings is smaller than the first, and a third of the three openings is the same size as the first. 4. The oven of claim 1, further comprising a user selectable switch connected to the fan and operable to vary the speed of the heated air within the cooking chamber. 5. The oven of claim 1, wherein the fan is operable at a first speed and at a second speed faster than the first speed; and further comprising a user selectable switch connected to the fan and having a first position for operating the fan at the first speed for baking and a second position for operating the fan at the second speed for roasting. 6. An oven comprising: a cooking chamber; a fan for circulating heated air within the cooking chamber; a user selectable switch connected to the fan and operable to vary the speed of the heated air within the cooking chamber, wherein the fan is disposed within a recess formed in a wall of the cooking chamber; a cover plate attached to the wall and covering the fan to define a fan chamber, the cover plate further comprising at least one opening proximate a central portion of the cover plate for the passage of the heated air from the cooking chamber into the fan chamber, and a plurality of three openings disposed proximate a periphery of the cover plate for directing the passage of heated air from the fan chamber into the cooking chamber along a selected direction, wherein each of the three openings is spaced equidistant from any adjacent openings around the perineter of the cover plate, and wherein a first of the three openings is centered along an imaginary line located at a forty five degree angle above horizontal. 7. An oven comprising: a cooking chamber; a fan for circulating heated air within the cooking chamber; a user selectable switch connected to the fan and operable to vary the speed of the heated air within the cooking chamber, wherein the fan is disposed within a recess formed in a wall of the cooking chamber; a cover plate attached to the wall and covering the fan to define a fan chamber, the cover plate further comprising at least one opening proximate a central portion of the cover plate for the passage of the heated air from the cooking chamber into the fan chamber, and a plurality of three openings disposed proximate a periphery of the cover plate for directing the passage of heated air from the fan chamber into the cooking chamber along a selected direction, wherein each of the three openings is spaced equidistant from any adjacent openings around the perimeter of the cover plate, and wherein a first of the openings is centered along an imaginary line located at a forty five degree angle above horizontal, wherein the three openings each have a generally elliptical shape and are each positioned to have an edge located adjacent an edge of the recess in order to provide a smooth flow path for the heated air passing into the cooking chamber. 8. An oven comprising: a cooking chamber; a fan for circulating heated air within the cooking chamber; a user selectable switch connected to the fan and operable to vary the speed of the heated air within the cooking chamber, wherein the fan is disposed within a recess formed in a wall of the cooking chamber; a cover plate attached to the wall and covering the fan to define a fan chamber, the cover plate further comprising at least one opening proximate a central portion of the cover plate for the passage of the heated air f