A refrigeration device includes a compressor, a condenser, an expansion valve, an evaporator, intake electromagnetic valves and exhaust electromagnetic valves, two-position three-way electromagnetic valves or two-position five-way electromagnetic valves, a cylinder group, a volume-variable airproof container, two-position two-way electromagnetic valves and a generator. The cylinder group is composed of two or more cylinders, refrigerant flows successively through the compressor, the intake electromagnetic valves, the cylinder group, the exhaust electromagnetic valves, the condenser, the expansion valve and the evaporator and finally enters the compressor from the evaporator, the cylinder group can do work to generate electricity through atmospheric pressure in the volume-variable airproof container and compensates for electric energy consumed by the compressor, and therefore the electric energy can be saved.

A refrigeration device includes a compressor, a condenser, an expansion valve, an evaporator, intake electromagnetic valves and exhaust electromagnetic valves, two-position three-way electromagnetic valves or two-position five-way electromagnetic valves, a cylinder group, a volume-variable airproof container, two-position two-way electromagnetic valves and a generator. The cylinder group is composed of two or more cylinders, refrigerant flows successively through the compressor, the intake electromagnetic valves, the cylinder group, the exhaust electromagnetic valves, the condenser, the expansion valve and the evaporator and finally enters the compressor from the evaporator, the cylinder group can do work to generate electricity through atmospheric pressure in the volume-variable airproof container and compensates for electric energy consumed by the compressor, and therefore the electric energy can be saved.

The present invention relates to a working engine that comprises a working volume or plurality of working volumes. The working volume(s) are each assigned one or more inlet valves and one or more outlet valves. The inlet valve(s) are connected to a supply line arrangement that supplies a medium. The inlet valve(s) are arranged so that when an inlet valve is open, the medium is supplied to the working volume assigned to the inlet valve. The outlet valve(s) are connected to a discharge line arrangement. In the working phase of increasing the working volume(s), the inlet valve(s) associated with the working volume(s) are open and the outlet valve(s) associated with the working volume(s) are closed. In the working phase of reducing the working volume(s), the outlet valve(s) associated with the working volume(s) are open and the inlet valve(s) associated with the working volume(s) are closed.

The present invention relates to a working engine that comprises a working volume or plurality of working volumes. The working volume(s) are each assigned one or more inlet valves and one or more outlet valves. The inlet valve(s) are connected to a supply line arrangement that supplies a medium. The inlet valve(s) are arranged so that when an inlet valve is open, the medium is supplied to the working volume assigned to the inlet valve. The outlet valve(s) are connected to a discharge line arrangement. In the working phase of increasing the working volume(s), the inlet valve(s) associated with the working volume(s) are open and the outlet valve(s) associated with the working volume(s) are closed. In the working phase of reducing the working volume(s), the outlet valve(s) associated with the working volume(s) are open and the inlet valve(s) associated with the working volume(s) are closed.

A refrigeration device includes a compressor, a condenser, an expansion valve, an evaporator, intake electromagnetic valves and exhaust electromagnetic valves, two-position three-way electromagnetic valves or two-position five-way electromagnetic valves, a cylinder group, a volume-variable airproof container, two-position two-way electromagnetic valves and a generator. The cylinder group is composed of two or more cylinders, refrigerant flows successively through the compressor, the intake electromagnetic valves, the cylinder group, the exhaust electromagnetic valves, the condenser, the expansion valve and the evaporator and finally enters the compressor from the evaporator, the cylinder group can do work to generate electricity through atmospheric pressure in the volume-variable airproof container and compensates for electric energy consumed by the compressor, and therefore the electric energy can be saved.

A refrigeration device includes a compressor, a condenser, an expansion valve, an evaporator, intake electromagnetic valves and exhaust electromagnetic valves, two-position three-way electromagnetic valves or two-position five-way electromagnetic valves, a cylinder group, a volume-variable airproof container, two-position two-way electromagnetic valves and a generator. The cylinder group is composed of two or more cylinders, refrigerant flows successively through the compressor, the intake electromagnetic valves, the cylinder group, the exhaust electromagnetic valves, the condenser, the expansion valve and the evaporator and finally enters the compressor from the evaporator, the cylinder group can do work to generate electricity through atmospheric pressure in the volume-variable airproof container and compensates for electric energy consumed by the compressor, and therefore the electric energy can be saved.

An arrangement includes a combustion-free reciprocating engine having a cylinder closed by a cylinder head and a negative pressure chamber.

A piston is coupled to a crankshaft via a connecting rod. The connecting rod and the crankshaft are integrated in a crankcase of the reciprocating engine.

The cylinder head has an inlet valve and an outlet valve. The vacuum chamber is connectable to a working chamber of the cylinder via the outlet valve, to generate a negative pressure in the working chamber, and to the atmosphere (A) surrounding the reciprocating engine via the inlet valve to generate ambient pressure in the working chamber.

A valve control controls the intake and the exhaust valves such that the piston is moved back and forth by alternately applying ambient pressure and negative pressure

There is always a substantially constant pressure, in a region of the piston facing away from the cylinder head.

An arrangement includes a combustion-free reciprocating engine having a cylinder closed by a cylinder head and a negative pressure chamber.

A piston is coupled to a crankshaft via a connecting rod. The connecting rod and the crankshaft are integrated in a crankcase of the reciprocating engine.

The cylinder head has an inlet valve and an outlet valve. The vacuum chamber is connectable to a working chamber of the cylinder via the outlet valve, to generate a negative pressure in the working chamber, and to the atmosphere (A) surrounding the reciprocating engine via the inlet valve to generate ambient pressure in the working chamber.

A valve control controls the intake and the exhaust valves such that the piston is moved back and forth by alternately applying ambient pressure and negative pressure

There is always a substantially constant pressure, in a region of the piston facing away from the cylinder head.

A cylinder/reciprocating-piston device for a compressed air engine includes a hollow cylinder having a hollow-cylinder wall defining a pressure space, a piston that is movable the pressure space, and valves that respectively open/close valve flow channels in the hollow-cylinder wall. The hollow-cylinder has a surface that delimits the pressure space in a radial direction, a ceiling wall that axially upwardly delimits the pressure space, a floor wall that axially downwardly delimits the pressure space, and a piston-rod opening in the floor- and/or ceiling wall that slidably guide(s) a piston rod. The piston divides the pressure space into a first pressure chamber between the piston and the ceiling wall, and a second pressure chamber between the piston and the floor wall. A minimum flow-cross section of one or more of the valve flow channels is preferably at least 10% of the effective cross-sectional surface area of the piston.

A cylinder/reciprocating-piston device for a compressed air engine includes a hollow cylinder having a hollow-cylinder wall defining a pressure space, a piston that is movable the pressure space, and valves that respectively open/close valve flow channels in the hollow-cylinder wall. The hollow-cylinder has a surface that delimits the pressure space in a radial direction, a ceiling wall that axially upwardly delimits the pressure space, a floor wall that axially downwardly delimits the pressure space, and a piston-rod opening in the floor- and/or ceiling wall that slidably guide(s) a piston rod. The piston divides the pressure space into a first pressure chamber between the piston and the ceiling wall, and a second pressure chamber between the piston and the floor wall. A minimum flow-cross section of one or more of the valve flow channels is preferably at least 10% of the effective cross-sectional surface area of the piston.