Abstract: A cleaning machine, preferably a dishwasher is provided. The machine comprises at least one spray pipe, spray arm or spray arm blade being substantially of elongate extent which is provided with a plurality of, at least two, nozzles along its elongate extent. Cleaning fluid is sprayed onto items to be cleaned, for example containers or dishes, via the at least two nozzles. The flow of the medium which is to be sprayed on is deflected within the spray pipe directly in front of at least one of the nozzles such that the jet flowing through the nozzle opening contains no flow components which are directed in the longitudinal direction of the spray pipe. As a result, the jet emerges from the spray pipe substantially orthogonally to the axis of symmetry of said spray pipe.

Abstract: A heat recovery device is provided for recovering thermal energy from a fluid medium, in particular for use in a waste-water system of a dishwasher. The heat recovery device comprises at least one heat exchanger with at least one heat exchanger surface. The heat recovery device further comprises at least one heating device, which is thermally coupled to the heat exchanger surface, and also at least one controller. The controller is designed to carry out a self-cleaning process for the heat exchanger, with the heat exchanger surface being briefly heated by means of the heating device during the self-cleaning process.

Abstract: A cleaning machine, in particular a batch dishwasher, comprising an individual cleaning chamber in which the items to be cleaned are accommodated, a pump which circulates washing liquid within the cleaning chamber, and a further pump which delivers fresh water, and also a boiler which stores and heats fresh water, wherein the boiler has an associated heat exchanger by means of which heat is indirectly or directly transferred from waste water which is stored in a reservoir to the fresh water which is stored in the boiler.

Abstract: The invention relates to a method for assessing and guaranteeing the thermal hygiene effect on items to be washed which are accommodated in a washing chamber of a single-chamber dishwasher or items to be cleaned which are accommodated in a cleaning chamber of a cleaning and disinfecting machine, with a temperature sensor being permanently assigned to the washing chamber or the cleaning chamber. The thermal hygiene effect produced by the temperature and action time acting on the items to be washed or the items to be cleaned is detected by means of the temperature sensor and a control system, and the heat equivalent values are calculated from this information.

Abstract: A cleaning appliance is provided for cleaning washware, which cleaning appliance is designed to subject the washware to the action of at least one cleaning fluid in at least one cleaning chamber. The cleaning appliance has a suction-removal apparatus for removing damp air from the cleaning chamber by suction, and at least one heat recovery device. The heat recovery device is designed to draw heat from the damp air and to feed it back to the cleaning appliance by means of a first cooling fluid. The cleaning appliance has a cooling-fluid line with at least one recirculation path and at least one heat accumulator path with at least one latent heat accumulator. The cleaning appliance is designed to conduct the first cooling fluid to the cleaning chamber and/or into a fluid tank via the recirculation path in at least one operating state after said cooling fluid has flowed through the heat recovery device.

Abstract: A cleaning appliance for cleaning of cleaning stock is provided, which is set up in order to act with at least one cleaning fluid upon the cleaning stock in at least one cleaning chamber. The cleaning appliance has at least one fluid tank for storing the cleaning fluid. Furthermore, the cleaning appliance has a suction-extraction device for the suction-extraction of moist air from the cleaning chamber and also has at least one heat recovery device. The heat recovery device is set up in order to extract heat from the moist air. The heat recovery device has at least one Peltier element, which has a heat-absorption side and a waste-heat side. The waste-heat side is in thermal contact with a fluid heating device. The fluid heating device is, in turn, in contact with a first cooling fluid and is set up in order to heat this first cooling fluid. The cleaning appliance is set up, furthermore, in order to use the first cooling fluid for a cleaning process.

Abstract: A cleaning machine is provided, in particular a single-chamber dishwashing machine, that includes a washing chamber for accommodating items to be cleaned or washed. At least one wash arm with a number of spray nozzles is located in the washing chamber. A waste-water line into which waste water is pumped runs from the washing chamber. Exhaust air from the washing chamber is conducted into the waste-water line via an exhaust-air line, with the washing chamber being bounded by at least one wall which stores a heat-exchanger fluid or through which heat-exchanger fluid flows.

Abstract: A pass-through dishwasher is provided having at least one washing zone, at least one rinsing zone and a drying zone. The pass-through dishwasher is used to clean items to be washed and comprises a conveyor device for conveying the items to be washed through successive treatment zones. The pass-through dishwasher comprises a drying zone which has arranged in it at least one drying fan whose rotation speed can be controlled.

Abstract: The invention relates to a filter insert (36, 66) for cleaning machines, in particular continuous-flow dishwashers (10), in which a batch to be cleaned runs through at least one treatment zone. The at least one treatment zone is assigned a washing tank (12). The filter insert (36) has a number of longitudinal ribs (38) which run parallel to one another and delimit flumes (48).

Abstract: A continuous-flow dishwashing machine and a method for operating the dishwasher is provided. The continuous-flow dishwashing machine is used for cleaning items to be cleaned and has a feed device for transportation of the items to be cleaned in the feed direction through successive treatment zones in the continuous-flow dishwashing machine. This optionally contains an initial cleaning zone, at least one cleaning zone, at least one rinsing zone and, optionally, a drying zone. Means are provided in the at least one rinsing zone in order to supply dishwashing liquid for the at least one rinsing zone to at least one cleaning zone and/or to the initial cleaning zone, as required by a machine controller and governed by a controller, with the decision on the zone to which the dishwashing liquid for the at least one rinsing zone is passed depending inter alia on level states in the at least one cleaning zone and the at least one rinsing zone.

Abstract: The invention relates to a drain valve which is used in particular in storage tanks of dishwashers, such as single-chamber or multi-chamber dishwashers. The drain valve comprises a sieve insert accommodated on a support which is of tubular design, and in which a contact switch is arranged to sense the presence of the sieve insert. The support can be moved in the vertical direction with respect to the drain opening in the base of a storage tank by means of an electric drive.

Abstract: The invention relates to an apparatus for identifying a leak in a mechanical seal separating the side of a conveyor unit which is in contact with a medium from an electric drive which is arranged outside the medium. If there is a leak, the escaping medium is detected by a sensor element which is arranged in a hollow space, which is bounded by a removable component, and serves to identify escaping medium.

Abstract: A method for evaluating and guaranteeing a thermal hygienic effect in a conveying dishwashing machine preferably a multi-chamber dishwasher, is provided. The inventive dishwasher is provided with one or several sensors which are fixed therein and transmit a temperature inside each treatment areas to a machine controller, preferably a controller for the conveying dishwashing machine. The machine controller determines the thermal hygienic effect by means of heat equivalent-based temperature and time acting on a cleanable object. A washing process is controlled in such a way that predetermined quantity of heat equivalents is transmitted to the cleanable object.

Abstract: A method for assessing and guaranteeing the thermal hygiene efficiency in a multi-tank dishwasher in which there is at least one sensor that transmits a temperature inside at least one treatment zone to a machine control system, in particular to the control system of the multi-tank dishwasher, the method includes: detecting the temperature inside at least one of the treatment zones by the sensor; determining the heat input applied to the items to be cleaned in at least one of the treatment zones on the basis of the temperature determined; comparing the heat input in the at least one treatment zone with a predefined heat input; and, as a function of the result of the comparison of the heat input values, varying the transport speed of the items to be cleaned through the multi-tank dishwasher, or varying the temperature of at least one of the process parameters acting on the heat input values as a control variable in a control loop for at least one of the treatment zones.

Abstract: Multi-tank dishwashers are used, in particular, industrially, in order to clean items which are to be washed. The invention relates to a multi-tank dishwasher which is provided with a washing area. The washing area comprises at least one rinsing water storage tank, at least one filter housing, at least one fine filter and at least one backwash device. In the normal mode, a filter wall of the at least one fine filter is cross flown in the direction from a waste water chamber to a pure water chamber. In order to clean the fine filter, the multi-tank dishwasher can be operated in a backwashing mode, without interrupting the washing process. In said backwashing mode, a cross-flow of the at least one filter wall of the rinsing water is reversed by using a backwash pump and a waste water pump. Dirt particles, which are located on the inner side of the filter wall, are rinsed off and are removed by the waste water pump in the waste water outlet.

Abstract: The invention relates to a conveyor dishwasher having at least one washing zone (3, 4), at least one rinsing zone (5, 6), a suction-extraction location (23) and/or a heat-recovery device (11). The dishwasher also comprises at least one drying zone (7). The flow direction (30) of the exhaust air within the dishwasher runs from the outlet (8) to the inlet (1), counter to the transporting direction (9) of the wash ware (10) through the dishwasher, the suction-extraction location (23) being arranged in the region of the inlet (1) of the dishwasher, and volumes of air (28, 33) which are withdrawn from the drying zone (7) being dependent on positions (34, 35) of exit nozzles (26) for hot air within the drying zone (7).

Abstract: The invention relates to a method and a device for the recooling of cleaned items in automatic cleaning and disinfecting machines for containers containing human excreta. According to the proposed method, the items to be cleaned, which are contained in a chamber (1), are rinsed off inside said chamber (1), after which a precleaning rinsing step takes place. The items to be cleaned, which are contained in the chamber (1), are then subjected to a final cleaning with water that contains a clear rinse additive, before the items to be cleaned are subjected to a disinfection step in the chamber (1) by introduction of steam into the latter. With the door (5) closed, air is forcibly introduced into the steam-filled chamber (1), which leads to steam condensation inside the chamber (1) and also to cooling and drying of the cleaned items contained in the chamber (1).