Abstract: The invention relates to an arrangement for air-conditioning rooms and to a heat pump for use in such an arrangement. The arrangement comprises a central heating device, to which multiple lines containing a heat-exchanging fluid are connected. The arrangement additionally comprises multiple decentralized, electrically operated heat pump units, which are energetically connected to the central heating device via the mentioned lines. The respective heat pump unit has a plurality of heat pump modules, which absorb thermal energy from the fluid for heating or deliver thermal energy to the fluid for cooling and/or dehumidifying. The mentioned heat pump modules preferably comprise Peltier elements acting as heat pump elements.

Abstract: An air purification device with ozone and find dust cleaning, and optionally heating, cooling and dehumidifying function, is formed for installation in a room of a building. The air purification device comprises a first air channel to supply fresh air and a second air channel to discharge extract air. The two air channels lead through a heat exchanger. The air purification device further comprises a third air channel which opens into the first air channel after the heat exchanger. An electric filter/ozone generator is arranged in the first air channel after the first inlet and in the third air channel after the third inlet. A first fan is arranged in the first air channel after the electric filter/ozone generator and a second fan is arranged before the active carbon filter. A control unit is programmed to operate in at least one first operating mode the second fan with a higher suction power than the first fan.

Abstract: The invention relates to an arrangement for air-conditioning rooms and to a heat pump for use in such an arrangement. The arrangement comprises a central heating device, to which multiple lines containing a heat-exchanging fluid are connected. The arrangement additionally comprises multiple decentralized, electrically operated heat pump units, which are energetically connected to the central heating device via the mentioned lines. The respective heat pump unit has a plurality of heat pump modules, which absorb thermal energy from the fluid for heating or deliver thermal energy to the fluid for cooling and/or dehumidifying. The mentioned heat pump modules preferably comprise Peltier elements acting as heat pump elements.

Abstract: The present disclosure relates to an optical plug connector (1) having an improved unlocking mechanism. A locking arm (4), which protrudes toward the back in a slanted manner, is operatively connected to a collar (7) by way of a bracket (9). By displacing the collar (7) in an unlocking direction (?x), the connector (1) can be unlocked and removed from a sleeve.

Abstract: The present disclosure relates to an optical plug connector (1) having an improved unlocking mechanism. A locking arm (4), which protrudes toward the back in a slanted manner, is operatively connected to a collar (7) by way of a bracket (9). By displacing the collar (7) in an unlocking direction (?x), the connector (1) can be unlocked and removed from a sleeve.