Abstract: An additive sub-system for a wastewater management system of a vehicle including at least one holding tank and a toilet has a controller, at least one additive dispenser and a pump. The at least one additive dispenser is in fluid communication with the at least one holding tank or the toilet. The pump is associated with each additive dispenser of the at least one additive dispensers. Each pump is controlled by the controller to dispense an additive from the at least one additive dispenser to the at least one holding tank or the toilet.

Abstract: An apparatus for delivering wastewater from a recreational vehicle to a drain includes a housing having an outer wall and an inner wall generally perpendicular or slightly angled to the outer wall. The housing and the inner wall define an inlet chamber above the inner wall and a further chamber below the inner wall. The housing further includes an outlet downwardly extending from the inlet chamber.

Abstract: A modular refrigerator includes a plurality of modules with at least one cooling unit module and at least one refrigeration module. The at least one cooling unit module and the at least one refrigeration module are independently constructed and secured to one another. The at least one refrigeration module may include at least a first refrigeration module and a second refrigeration modules. The at least one cooling unit module may be a common cooling unit module for selectively providing a refrigerant to the first and second refrigeration modules.

Abstract: A refrigerator includes a housing defining an interior, a freezer disposed within the interior, and a cooling unit for cooling the interior of the refrigerator. The freezer has a freezer door. The cooling unit includes a heat exchanger disposed within the interior of the housing. At least one ventilation duct vertically extends through the freezer door. The at least one ventilation duct has a first end in communication with an upper zone of the interior of the refrigerator. An airflow path extends between the heat exchanger and a lower end of the at least one ventilation duct. A cooling fan is disposed within the interior of the refrigerator for directing a source of air across the heat exchanger, along the airflow path, through the at least one ventilation duct and into the upper zone of the interior of the refrigerator. The cooling unit includes a cooling unit housing located at a rear side of the refrigerator.

Abstract: A refrigerator has a component subassembly incorporating a plurality of refrigeration components along an airflow path that extends between an inlet for colder air and an outlet for warmer air. The refrigerator further includes a noise reduction arrangement for reducing an operating noise of the refrigerator having a plurality of walls defining the airflow path. The walls include a noise absorbing material. The plurality of walls includes a plurality of external walls and a plurality of internal walls. The plurality of external walls defines an outer perimeter of the component subassembly and are oriented generally orthogonal to one another. The internal walls of the plurality of internal walls may be skewed relative to the external walls of the plurality of external walls. At least some of the walls of the plurality walls may be load-bearing walls.

Abstract: A wastewater management system 10 includes a black water tank 12 for holding black wastewater and a grey water tank 14 for holding grey wastewater. The system 10 may additionally include a filter 62 for filtering suspended solids from the grey water; a first conduit 64 between the grey water tank 14 and the filter 62; a second conduit 66 between the filter 62 and a toilet 22, and a third conduit 68 between the filter 68 and the black water tank 12, the third conduit 68 associated with a valve 26; and a fourth conduit 69 between the filter 62 and the grey water tank 14, the fourth conduit 69 associated with the valve 26. The system 10 further includes a control sub-system 38 in communication with the valves 26 for controlling valves 26 to deliver filtered grey water to the toilet 22 for flush and to periodically clean the filter 62 of captured solids and deliver the captured solids to the black water tank 12.

Abstract: A multifunctional valve assembly includes a first portion with a first 3-way valve functionality for selectively controlling flow of a first fluid and a second portion with a second, 3-way functionality valve functionality for selectively controlling flow a second fluid. The multifunctional valve assembly further includes a common motor associated with the first and second portions and operative to drive both of the first and second portions to operate in first, second and third operational modes. A method of operating the multifunctional valve assembly including rotating a first sleeve about an axis of the first sleeve with the common motor to concurrently drive the first and second portions of the valve assembly to each operate the first, second and third operational modes.

Abstract: An apparatus for delivering wastewater from a recreational vehicle to a drain includes a housing having an outer wall and an inner wall generally perpendicular or slightly angled to the outer wall. The housing and the inner wall define an inlet chamber above the inner wall and a further chamber below the inner wall. The housing further includes an outlet downwardly extending from the inlet chamber.

Abstract: A toilet sub-system of a wastewater management vehicle includes a toilet and a housing. The housing is associated with the toilet and includes a macerator pumping arrangement having a macerator and a pump. The macerator includes a plurality of macerating knives. The pump is an air pump providing positive pressure in a macerator chamber to pump waste from the macerator chamber. The sub-system further includes at least one motor for driving the pumps and the macerator. The macerator pumping arrangement is operative in a macerating mode and a pumping mode, such that in the macerating mode the first motor first drives the macerating knives to macerate the waste and subsequently in the pumping mode the waste is pumped out of the macerating chamber by positive pressure.

Abstract: An additive sub-system for a wastewater management system of a vehicle including at least one holding tank and a toilet has a controller, at least one additive dispenser and a pump. The at least one additive dispenser is in fluid communication with the at least one holding tank or the toilet. The pump is associated with each additive dispenser of the at least one additive dispensers. Each pump is controlled by the controller to dispense an additive from the at least one additive dispenser to the at least one holding tank or the toilet.

Abstract: A refrigerator has a cabinet, at least one door and a plurality of refrigeration components. The cabinet defines an interior volume including at least one cooling compartment. The at least one door is carried by the cabinet and provides access to the interior volume. The plurality of refrigeration components includes a compressor, a condenser and a fan. The refrigerator additionally includes a component subassembly incorporating the plurality of refrigeration components and an airflow path extending between an inlet for colder air and an outlet for warmer air. The refrigeration components are located along the airflow path. The refrigerator further includes a noise reduction arrangement for reducing an operating noise of the refrigerator. The noise reduction arrangement including a plurality of walls defining the airflow path. The walls include a noise absorbing material. The plurality of walls includes a plurality of external walls and a plurality of internal walls.