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AssigneesRobert Bosch GmbH, Viessmann Werke GmbH & Co. KG
InventorKlaus Heikrodt
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The invention concerns a method and a device for operating a heating and cooling machine that functions on the basis of a regenerative gas cyclic process, in particular a Vuilleumier heat pump, having a burner (34) as the source of the thermal driving, in which, to increase its efficiency or to maximize the output number of the heating and cooling machine, the combustion air conveyed to the burner (34) is preheated in the heat exchange with the exhaust gases. It is proposed that, for increasing the output performance of the heating and cooling machine, the preheating of the combustion air is forestalled at least partially, whereas in response to a simultaneous increase of the burner output, the hot exhaust-gas mass-flow is conveyed to an exhaust-gas-water heat-exchanger (50). In this manner, the output of the heating and cooling machine system is increased in an advantageous manner, without having to change the design data or the size of the heating and cooling machine.
A method for operating a heating and cooling machine that functions on the basis of a regenerative gas cyclic process, in particular a Vuilleumier heat pump, having a burner as the source of the thermal driving, in which, to increase its efficiency or to maximize the output number of the heating and cooling machine, the combustion air conveyed to the burner is preheated in the heat exchange by the exhaust gases, characterized in that, to increase the output of the heating and cooling machine, the preheating of the combustion air is forestalled at least partially, whereas in response to a simultaneous increase of the burner output, the hot exhaust-gas mass-flow is conveyed to an exhaust-gas-water heat-exchanger (50).
The method as recited in one of the preceding claims, characterized in that, for increasing the burner output, the combustion air flow generated by a blower fan (37) and the combustion gas quantity are increased, while the air number is kept the same.
A device for carrying out the method as recited in one of the preceding claims, characterized in that a bypass channel (38b) is provided, with whose assistance the preheating of the combustion air can be controlled, and that an exhaust-gas-water heat-exchanger (50) is provided, which is connected via an exhaust gas outlet (44) to the burner (34).
Dependencies are inferred from the claim text.