Abstract: The invention relates to a device (15) for foaming milk by means of external suction equipment (35), used as in accessory for espresso machines or similar domestic appliances. Said device comprises a fixed part that can be connected to the steam supply conduit (1) of said machines and an easily interchangeable disposable part (26) containing all parts that come into contact with the milk. The invention is characterised in that components of the disposable parts and in some embodiments of the invention even the entire disposable part consist(s) of thin-walled plastic tubes of the drinking straw type, which can be produced in a cost-effective and environmentally friendly manner by extrusion and subsequent thermoplastic forming. The use of the inventive device obviates the need for the inconvenient cleaning of conventional foaming nozzles and eliminates hygiene problems.

Abstract: In a filter, a rotatable connection flange with two kidney-shaped openings and a diametral web between the openings is located between the top part and bottom part of the filter. Rotating the connection flange allows the direction in which a gas flows through the filter element located in the filter housing to be reversed. In this way, the filter can be operated as a coalescence filter or as a dust filter by simply rotating the connection flange.

Abstract: The invention relates to a device (15) for foaming milk by means of external suction equipment (35), used as in accessory for espresso machines or similar domestic appliances. Said device comprises a fixed part that can be connected to the steam supply conduit (1) of said machines and an easily interchangeable disposable part (26) containing all parts that come into contact with the milk. The invention is characterised in that components of the disposable parts and in some embodiments of the invention even the entire disposable part consist(s) of thin-walled plastic tubes of the drinking straw type, which can be produced in a cost-effective and environmentally friendly manner by extrusion and subsequent thermoplastic forming. The use of the inventive device obviates the need for the inconvenient cleaning of conventional foaming nozzles and eliminates hygiene problems.

Abstract: In a filter, a rotatable connection flange with two kidney-shaped openings and a diametral web between the openings is located between the top part and bottom part of the filter. Rotating the connection flange allows the direction in which a gas flows through the filter element located in the filter housing to be reversed. In this way, the filter can be operated as a coalescence filter or as a dust filter by simply rotating the connection flange.

Abstract: A bearing system for a water lance of a water lance blower contains a ball joint having a ball with a surface and a diameter. The ball further has a passage, on and/or in which the water lance can be disposed. The bearing system is characterized in that a ball seat is provided and contains two axially interspaced bearing shells each of which has an opening, whereby the ball protrudes at least partially into the openings. A method for operating the bearing system that seals gaps, which can occur as the ball rotates, between the surface of the ball and the spherical contact surface of the at least one bearing shell. The bearing shells enable the bearing system to be easily assembled, and the small contact surfaces reduce the amount of friction during operation. In addition, the bearing system is also suited for use as a seal.

Abstract: A water lance blower for cleaning heat installations includes a water lance moveably mounted with a mouth thereof at or in a hatch. The water lance can blow a jet of water through the heating installation, through which flames and/or flue gases are guided, to wall regions accessible from the hatch, during operation. The water lance is provided with at least one sensor for detecting at least one predeterminable measurement value for monitoring the quality of the water jet. A method for operating the water lance blower includes detecting and evaluating at least one parameter characteristic of the quality of the water jet as a measurement value during operation of the water lance blower. The method permits an evaluation of the cleaning effect of the water lance blower during operation and, if required, influencing of the same.

Abstract: A bearing system for a water lance of a water lance blower contains a ball joint having a ball with a surface and a diameter. The ball further has a passage, on and/or in which the water lance can be disposed. The bearing system is characterized in that a ball seat is provided and contains two axially interspaced bearing shells each of which has an opening, whereby the ball protrudes at least partially into the openings. A method for operating the bearing system that seals gaps, which can occur as the ball rotates, between the surface of the ball and the spherical contact surface of the at least one bearing shell. The bearing shells enable the bearing system to be easily assembled, and the small contact surfaces reduce the amount of friction during operation. In addition, the bearing system is also suited for use as a seal.

Abstract: A water lance blower for cleaning heat installations is disclosed. A water lance linked with a water feed conduit system is swivel-mounted with its orifice disposed in a hatch. The water lance can blow a jet of water through the heating installation in operation and through which flames and/or flue gases are guided to wall areas that can be reached from the hatch. The water lance blower is provided with a drive system with at least two drive units that control the water lance, and with a holding device that fastens the water lance blower onto the heating installation. Further, parts of the water feed conduit system are integrated onto the holding device, thereby substantially limiting the size of the water lance blower to the swivel range of the water lance.

Abstract: A water lance blower for cleaning heat installations is disclosed. A water lance linked with a water feed conduit system is swivel-mounted with its orifice disposed in a hatch. The water lance can blow a jet of water through the heating installation in operation and through which flames and/or flue gases are guided to wall areas that can be reached from the hatch. The water lance blower is provided with a drive system with at least two drive units that control the water lance, and with a holding device that fastens the water lance blower onto the heating installation. Further, parts of the water feed conduit system are integrated onto the holding device, thereby substantially limiting the size of the water lance blower to the swivel range of the water lance.

Abstract: A water lance blower for cleaning heat installations includes a water lance moveably mounted with a mouth thereof at or in a hatch. The water lance can blow a jet of water through the heating installation, through which flames and/or flue gases are guided, to wall regions accessible from the hatch, during operation. The water lance is provided with at least one sensor for detecting at least one predeterminable measurement value for monitoring the quality of the water jet. A method for operating the water lance blower includes detecting and evaluating at least one parameter characteristic of the quality of the water jet as a measurement value during operation of the water lance blower. The method permits an evaluation of the cleaning effect of the water lance blower during operation and, if required, influencing of the same.

Abstract: A device for continuously fractionating a gas by adsorption, an in-service testing device in a processor-controlled adsorption drier system and a method for testing the operating capability of an adsorption drier system under the control of a processor, including two adsorbent beds connected to one another in a switching system, in which regeneration is performed by a flow of regeneration gas. The device has a gas inlet, a gas outlet and a bypass outlet feeding into a common functional block, which contains a line switching circuit, a first and a second shuttle valve and, optionally, other components. The in-service testing device and the device are so compact due to their respective structures that they can be integrated with one another requiring little space and having low assembly requirements. The testing method is configured to co-operate with the in-service testing device and the device, requiring only a few components for the application thereof.

Abstract: An advantageous configuration of an adsorption medium in a drying plant is described. At least one cartridge containing the adsorption medium for a gas to be dried is removably disposed in a container of the drying plant. A pressure prevails between the adsorption medium and the cartridge such that the adsorption medium remains stationary in the cartridge, in particular even under changing operating and/or environmental conditions. Using the cartridge enables the adsorption medium to be changed rapidly and safely on site. In addition, the invention ensures a high quality of gas drying, in particular without the added risk of the particles being released. Different cartridges can also be used for different adsorption media and can therefore be optimized to suit the most varied of drying plants.

Abstract: A process of cost-optimized control of a mechanical filter that is situated in a flow of cooling water driven by a cooling water pump in a heat exchanger and that can be regenerated by means of a flushing system involves the following steps: at least one measurement value is determined from which the filter's current degree of soiling is derived and this value is fed to a flush command generator; by means of the functional dependencies and/or data stored in the flush command generator a first and a second performance loss are calculated at predeterminable intervals, the first performance loss comprising the performance loss due to the filter's degree of soiling and the second performance loss comprising the performance loss due to a flushing operation at the current degree of soiling; from the progression over time of the first computed performance loss are determined the total performance losses since the last regeneration as a result of the soiling of the filter; a current second energy loss is calculated f

Abstract: The invention pertains to a process and a device for cost-oriented monitoring and/or display of the operating state of a replaceable or regenerable, fluid (7) traversed conditioning device (1), particularly a filter (4), in an overall system.

Abstract: The invention relates to a backwashable filter, which comprises superimposed elements, particularly having an annular design, for producing filter candles. In the case of the filter candles the elements are subject to a radial through-flow from the inside to the outside in filter operation, whereas the flow direction is reversed for backwashing. On the inside of the filter layer is provided on each element a lip, elastically deflectable in the flow direction and facing the flow, which forms a gap opening with a fixed edge of the adjacent element. Under the action of the differential pressure of the flow acting on the wide front face of the lip, the lip performs a movement in which the gap opening is narrowed to a limited extent and as a result of the elastic deformation corresponding restoring forces are built up.

Abstract: The invention relates to a method and to an apparatus for monitoring the heat transfer and therefore the efficiency of a condenser. A water column is formed by shutting off a condenser pipe which assumes the steam temperature T.sub.s and whose outflow time after the resumption of the flow can be utilized for measuring the flow velocity. With the knowledge of the water inlet temperature T.sub.1 and the water outlet temperature T.sub.2 measured on the same condenser pipe, it is possible to very accurately establish the heat transfer through the measured condenser pipe, so that on the basis thereof it is e.g. possible to operate a cleaning system with foam rubber balls. Thus, each fraction of the possible efficiency of the condenser is exploited.

Abstract: In the cleansing especially of cooling water for a heat exchanger the installation of rotationally symmetric filter bodies in the cooling water feeder pipe and suction of sediments across a suction nozzle rotating on the windward side. Difficulties result therein in the production of a required back-flow through the filter and the avoidance of lateral airfluxes in front of the filter surface, as a certain gap is necessary between filter and suction nozzle for holding the sediments.

Abstract: Apparatus for extracting cleaning bodies from a cooling liquid after flowing through the tubes of a heat exchanger as a pipe section casing with at least one layer of screens arranged in a V-shaped manner mounted to be pivoted for through-washing includes a device for receiving the cleaning bodies collected in a strip-like section from both screens and a guide member arranged above the device for aligning the cooling fluid flow more parallel to the screen surfaces directly upstream from the strip section. The apparatus is characterized in that the guide member is provided with two vortex members running parallel to the strip section with each vortex member being associated with one of the two screens to form one vortex zone with at least one point within the vortex zone terminating in an opening of a pipe for sucking off the cleaning bodies.

Abstract: A device for recovering cleaning particles from a liquid stream after it has traversed a heat exchanger, comprises a pivotable inclined sieve and a baffle plate upstream of an outlet and the lower edge of the sieve for generating between the plate and the sieve a vortical flow which induces the particles to flow downwardly along the sieve to the outlet.

Abstract: In the operation of cleaning the pipes of heat exchangers by means of sponge rubber balls which are entrained by the cooling water, a cylindrical housing is connected upstream of the heat exchanger, in which housing several chambers are formed by several dividing walls rotating about a vertical axis, and the chambers are subdivided by a horizontal sieve plate into an upper group of chambers for receiving the balls and into a lower group of chambers. In this arrangement, two opposite cooling water supply and removal connections are each provided in the region of the lower group of chambers, and two similar cooling water connections are provided in the region of the upper group of chambers which are connected to the heat exchanger pipes. In order to also allow a discontinuous cleaning operation, while stopping the balls and without interrupting the flow of cooling water, the present invention provides that the interior of the housing (2) is subdivided by three dividing walls (4,5,6) which are arranged at 120.