Abstract: A feeding device for controlled feeding of objects (R) from an inlet (9) to a outlet (11) by means of a feeding means consistituted by two cooperating feeding wheels (4,5). One of the feeding wheels (4) has a guiding groove (21), and the other feeding wheel (5) has two round belts (17a,17b) laid around the wheel, and stationary guide plates (26,27) preferably extend between the belts in the nip and merge with the inlet and/or the outlet.

Abstract: Method and device for treatment of balls, in particular balls for rolling bearings, by gentle mechanical treatment in the presence of a cleaning fluid or the like. According to the invention, the treatment of the entire surface of each ball is accomplished in that the balls are moved between two mutually rotating discs (12,24) while being forcedly guided (19,20) in a spiral path outwardly from the center while skidding.

Abstract: A lamellar separator includes a lamellar pack which is formed from vertically oriented first plates (1) having a first corrugation in the vertical plane, where the lamellae (10,11) of said plate inclined to the vertical plane form vertical boundaries for substantially horizontal flow channels, and vertically oriented second plates (2) corrugated in the horizontal plane, arranged on either side of each first plate and in contact therewith. The flow channels are defined horizontally by the corrugation peaks of the second plates, and the vertical rise and fall channels for separate pollutants are defined by the second plates (2) and the corrugation peaks (22) of the first plates. The corrugations (1,2) of the first plates are preferably triangular. The first plates (1) and the second plates (2) are preferably put together such that the corrugation peaks (12) of the first plate lie behind the corrugation peaks (22) of the second plate (2).

Abstract: There is provided a heat pump installation for the heating of tap water and for room heating purposes e.g., associated office spaces in large warehouses where a number of refrigerators are operating. The heat pump receives its input heat from the heat liberated by the refrigerators.

Abstract: Waste heat from paper mills, for example, is used partly as energy input to a heat motor, partly as energy input to a heat pump. The heat motor drives the compressor of the heat pump which means that no external high grade energy has to be supplied to drive the heat pump. The heat leaving the hot side of the heat pump can be utilized readily, directly or after heating of feed water, for example, possibly for vaporization thereof, for example, in the process that left the waste heat.

Abstract: There is provided a method and an apparatus for controlling the temperature of a plurality of rooms having mutually different and varying heat requirements, among which rooms at least one normally has a cooling requirement.The common input air flow to the rooms passes a heat exchanger and is cooled to the requisite temperature for the room having a cooling requirement, while the separate input air flows to the respective rooms are afterheated by means of after heating banks, one for each room, to the desired temperature. The heat exchanger is, or is connected to, an evaporator in a refrigerator (heat pump) the condenser of which is located in the common output airflow from the rooms. The heating banks are heat supplied by part of the condensation heat of the refrigerant vapor.

Abstract: In an apparatus for defrosting an evaporator in a heat pump which is driven by a compressor, the evaporator consists of a fan and a heat exchanger through which the fan drives air for heat exchange with the heat transport medium flowing through the heat exchanger. A pressure sensitive switch is arranged to actuate a member for reversal of the pumping direction of the compressor when the pressure differential .sigma. p of the air over the heat exchanger has reached a predetermined value, and a temperature sensitive switch which senses the temperature at the heat exchanger, is arranged to actuate the reversal member to maintain the reversed pumping direction of the compressor as long as the temperature at the heat exchanger is less than or equal to 0.degree. C.

Abstract: There is provided a heating installation comprising a heat pump and a fuel-fired boiler to which a radiator circuit is connected. A separate hot water heater may be coupled in parallel with the boiler. The hot side of the heat pump is connected to a first shunt pipe in the radiator circuit and is thus coupled in parallel with the boiler. A second shunt pipe is coupled in parallel with the boiler and a third shunt pipe is connected between the hot side of the first shunt pipe and the second shunt pipe. A first threeway shunt valve is connected between the first and third shunt pipes and a second threeway shunt valve is connected between the second shunt pipe and the hot side of the radiator circuit. These two shunt valves may be interlocked.Further the compressor of the heat pump may be arranged to be controlled by the pressure of the refrigerant in the heat pump circuit between the evaporator and the compressor.

Abstract: There is provided a heat pump system comprising two cascade coupled heat pumps. The hot side of the system may be connected in series with an oil-fired boiler in a radiator circuit of conventional water heating installation, wherein a hot water heater is coupled in parallel to the boiler. The low temperature heat pump has two series connected condensors of which one is connected to the evaporator of the high temperature heat pump, while the other is useful for heating radiator water flowing in a shunt pipe parallel with the boiler. A threeway shunt valve controls the mix of water of different temperatures from the boiler and the shunt pipe respectively, so that water of a desired temperature is let into the raiser pipe of the radiator circuit.