Abstract:
A heating assembly can include a gas hook-up and a pressure switch. The pressure switch can be in fluid communication with the gas hook-up and be movable at a predetermined threshold pressure from a first position to a second position. The pressure switch can be further configured such that if a fuel is connected to the gas hook-up that has a delivery pressure either above the predetermined threshold pressure in one situation or below the predetermined threshold pressure in another, the fuel will act on the pressure switch to move it from the first position to the second position.
Abstract:
A safety pressure switch can be used with a gas appliance. The gas appliance can be a single fuel or a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The safety pressure switch can be fluidly connected to a fuel input and electrically coupled to a pilot assembly.
Abstract:
A safety pilot can be used with a gas appliance. The gas appliance can be a single fuel or a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The safety pilot can include a first thermocouple, a second thermocouple, and a nozzle configured to direct combusting fuel towards both the first and second thermocouples.
Abstract:
A heating assembly can be used in a dual fuel heater to mix air with fuel to be combusted at the burner. The heating assembly can include a burner, a first nozzle, a second nozzle, a first conduit and a second conduit. The first conduit can have an opening configured to allow air to mix with fuel injected into the first conduit by the first nozzle.
Abstract:
A dual fuel heating source can have a dual entry valve unit with a main body at least partially defining a certain flow paths or channels therethrough. The dual entry valve can have first and second inlets and first and second outlets. The dual fuel heating source may also include a pressure regulator, an exit valve, a control valve and/or a manifold connected to the dual entry valve unit.
Abstract:
A dual fuel heating system can be used in a gas appliance. The system can have an air shutter to regulate an amount of air that can mix with the fuel for combustion. The air shutter can be configured to have different positions depending on the type of fuel to be used.
Abstract:
A heat engine can have a fuel selector valve for selecting between a first fuel and a second fuel. Making the selection with the fuel selector valve can also determine a flow path through the heat engine, there being two different paths, each configured for a different fuel. A burner nozzle can form a single unit with the fuel selector valve. In some embodiments the burner nozzle can also form a single unit with an outlet valve.
Abstract:
Disclosed herein are methods for identifying rare cells containing particular markers and/or alleles from biological samples that have not been substantially pre-processed (e.g., unprocessed whole blood). The methods described herein provide a system for digital enrichment of target cells from a biological sample and detection of such target cells, thereby allowing accurate and efficient detection and/or enumeration of such cells in the sample.
Abstract:
A refrigerator can use a gas absorption refrigeration system. The refrigerator in some embodiments can store one or two gas cylinders within an outer housing. At least one cylinder can connect to a pressure regulator within the outer housing. In some embodiments, the refrigerator can include a table.
Abstract:
A dual fuel heating source can have a fuel selector valve for selecting between a first fuel and a second fuel different from the first. The dual fuel heating source may selectively have a regulator unit, and an outlet valve. The regulator unit can be configured to regulate the pressure of two different fuels. The outlet valve can be connected to the fuel selector valve such that selecting a fuel can determine the path fuel will flow through the outlet valve and also out of the heating source.